【Petrochemical Section】Receive the special post for “Event Points” in November

This post was last edited by Guan Gongyu on December 2, 2015, at 15:01. Section where the activity takes place: The “Dry Gas and Wastewater” section. There are a total of 32 posts under the “Picture of the Day” and “Question of the Day” categories. Activity coordinator: Yitailong’er. Deputy moderator in charge: Guan Gongyu. Posting coordinator: xc445408333. [Question of the Day] November 7 – True or False: During the Claus reaction process, insufficient air supply is more problematic than an excess amount of air... http://bbs.hcbbs.com/thread-1492214-1-1.html (Source: Haichuan Chemical Engineering Forum). [Weekly Topic] November 9–15: Why can’t deoxygenated water be added immediately when a waste heat boiler runs dry? http://bbs.hcbbs.com/thread-1493100-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.8 True or False: Steam ejectors are used in sulfur degassing tanks to remove sulfur dioxide gas. http://bbs.hcbbs.com/thread-1492672-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.9 True or False: An excessively high conveying speed is one of the reasons for thick sulfur lumps forming in the molding machine. http://bbs.hcbbs.com/thread-1493096-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.10 True or False: The method used for degassing liquid sulfur in the sulfur recovery liquid sulfur tank is cyclic degassing. http://bbs.hcbbs.com/thread-1493938-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.11 Multiple Choice: Under normal temperatures, a fire in the reactor bed during production occurs due to ___. http://bbs.hcbbs.com/thread-1494613-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.12 Multiple Choice: Since organic sulfurs such as COS and CS2 are generated in the process gas, industry generally uses ___. http://bbs.hcbbs.com/thread-1495317-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.13 Multiple Choice: If the air-fuel ratio is too high during sulfur recovery operations, the temperature of the combustion furnace ( ). http://bbs.hcbbs.com/thread-1496114-1-1.html [Daily Question] 11.14 Multiple Choice: The explosion limit of hydrogen sulfide (based on hydrogen sulfide itself) is ___. http://bbs.hcbbs.com/thread-1496765-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.15 Multiple Choice: The allowable concentration of H2S in the air is ___. http://bbs.hcbbs.com/thread-1497233-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.16 Multiple Choice: When ferrous sulfide comes into contact with air, it will undergo ( ). http://bbs.hcbbs.com/thread-1497690-1-1.html (Source: Haichuan Chemical Forum) [Weekly Topic] 11.16–11.22 What are the main reasons for overheating in Claus reactors? How to handle it? http://bbs.hcbbs.com/thread-1497716-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day] November 17 – Multiple-choice question: The sulfation of Al2O3 catalysts is caused by... http://bbs.hcbbs.com/thread-1498912-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day] November 18 – Multiple-choice question: The deactivation of catalysts can be determined based on ( ). http://bbs.hcbbs.com/thread-1499315-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day] November 19 – Fill-in-the-blank question: When the amount of acid gas decreases, the amount of air supplied should be appropriately (), to prevent a shortage of oxygen after combustion. http://bbs.hcbbs.com/thread-1500132-1-1.html (Source: Haichuan Chemical Engineering Forum) [Picture of the Day] November 19 – What is this? Correct +10 http://bbs.hcbbs.com/thread-1500577-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】11.20 Fill-in-the-blank: The Claus reaction belongs to () reaction, and the hydrolysis of organic sulfur is a () reaction. http://bbs.hcbbs.com/thread-1500877-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】11.20 What is this device? Correct +10 http://bbs.hcbbs.com/thread-1500955-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day] 11.21 Fill-in-the-blank question: Besides the efficiency of the catalyst, what else affects the reaction rate in sulfur recovery reactors?... http://bbs.hcbbs.com/thread-1501601-1-1.html (Source: Haichuan Chemical Engineering Forum) [Picture of the Day] 11.21 What is this? Correct +10 http://bbs.hcbbs.com/thread-1501618-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】11.23 True or False: The auto-ignition temperature of ferrous sulfide is 50°C http://bbs.hcbbs.com/thread-1502723-1-1.html (Source: Haichuan Chemical Forum) 【Daily Image】11.23 Test your knowledge: What device is this? ! Correct +10 http://bbs.hcbbs.com/thread-1502744-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】11.24 True or False: The molecular formula of solid sulfur is generally S8, and its structure is saddle-shaped, at 130°C to 1... http://bbs.hcbbs.com/thread-1503257-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】11.24 Guess what this is! ! Correct +10 http://bbs.hcbbs.com/thread-1503252-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】11.25 True or False: The component of acid rain is SO2 only. http://bbs.hcbbs.com/thread-1504163-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Picture】11.25 Guess what this is! ! Correct +10 http://bbs.hcbbs.com/thread-1504215-1-1.html (Source: Haichuan Chemical Engineering Forum) [Question of the Day] 11/26 True or False: The equation for the incomplete combustion of hydrogen sulfide in the absence of sufficient air is http://bbs.hcbbs.com/thread-1504921-1-1.html (Source: Haichuan Chemical Engineering Forum) [Picture of the Day] 11/26 Guess what this is! ! Correct +10 http://bbs.hcbbs.com/thread-1504926-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.1 Fill-in-the-blank: The common control laws for automatic control instruments are http://bbs.hcbbs.com/thread-1508103-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.1 It’s too difficult; the person who created the question must have seen or used this equipment before (Correct +10 rewards) http://bbs.hcbbs.com/thread-1508089-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.2 True or False: The sulfur produced in the Claus reaction is in liquid form http://bbs.hcbbs.com/thread-1508726-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.2 Guess: What device is this? Correct +10 wealth http://bbs.hcbbs.com/thread-1508777-1-1.html (Source: Haichuan Chemical Forum)

This post was last edited by Guan Gongyu on 2015-12-2 at 15:36. Total: 45 daily questions and daily images. 12 weekly topics. 11 in imitation Song typeface. 21 images from the device photo-sharing contest. Among them, “One Picture per Day” and the “Device Photo Contest” are new activities launched in Section 1 in November, and a vote for the best member of the [Petroleum Section] in November will be held. ================================================================================================================== I. Daily Question and Daily Image Activity. Sections where this activity takes place: It is available in all 5 sections. Person in charge of the activity: Deputy moderator Guan Gongyu; Person responsible for posting the content: Guan Gongyu. Activity topics: Daily Question, Daily Image. URLs for the activities: [Daily Question] Fill-in-the-blank question on 11/30 – Correct answer earns +10 wealth points. http://bbs.hcbbs.com/thread-1507276-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Image] The question on 11/30 was too difficult; even those who created it didn’t know the answer (Correct answer earns +10 wealth points). http://bbs.hcbbs.com/thread-1507264-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Question] True or False question on 11/27. http://bbs.hcbbs.com/thread-1505952-1-1.html (Source: Haichuan Chemical Industry Forum) [Daily Image] Guess what kind of storage tank this is, from 11/27 http://bbs.hcbbs.com/thread-1505949-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] Test your knowledge on 11/22! ! Correct +10 http://bbs.hcbbs.com/thread-1502193-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] Test your knowledge on 11/22! ! Correct +10 http://bbs.hcbbs.com/thread-1502192-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] Test your knowledge on 11/22! ! Correct +10 http://bbs.hcbbs.com/thread-1502191-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] Test your knowledge on 11/22! ! Correct +10 http://bbs.hcbbs.com/thread-1502190-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] Test your knowledge on 11/22! ! Correct +10 http://bbs.hcbbs.com/thread-1502189-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] On 11/20, there’s a points-giving question! Correct +10 Wealth http://bbs.hcbbs.com/thread-1501392-1-1.html (Source: Haichuan Chemical Forum) 【Daily Quiz】11.20 True or False questions http://bbs.hcbbs.com/thread-1500838-1-1.html (Source: Haichuan Chemical Forum) 【Daily Picture】11.18 This one is known to very few people. Correct +10 http://bbs.hcbbs.com/thread-1500038-1-1.html (Source: Haichuan Chemical Forum) [Image of the Day] November 18th – this one is known to very few people. Correct +10 http://bbs.hcbbs.com/thread-1500031-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] Do you recognize this one from 11.18? Correct +10 http://bbs.hcbbs.com/thread-1500024-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] 11.18 – this one is hardly recognized by anyone. Correct +10 http://bbs.hcbbs.com/thread-1500028-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] 11.18 – this one is little known to most people. Correct +10 http://bbs.hcbbs.com/thread-1500018-1-1.html (Source: Haichuan Chemical Forum) 【Picture of the Day】Guess what it is from the picture on 11.17 http://bbs.hcbbs.com/thread-1499106-1-1.html (Source: Haichuan Chemical Forum) 【Picture of the Day】Guess what it is from the picture on 11.17 http://bbs.hcbbs.com/thread-1499104-1-1.html (Source: Haichuan Chemical Forum) 【Picture of the Day】Guess what it is from the picture on 11.17 http://bbs.hcbbs.com/thread-1499098-1-1.html (Source: Haichuan Chemical Forum) 【Picture of the Day】It’s too difficult on 11.17; many people can’t recognize it. http://bbs.hcbbs.com/thread-1499095-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] Guess what it is from the picture of 11.17 http://bbs.hcbbs.com/thread-1499092-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] What component is this from 11.16? http://bbs.hcbbs.com/thread-1497778-1-1.html (Source: Haichuan Chemical Engineering Forum) [Image of the Day] 11.16 What kind of device is this? http://bbs.hcbbs.com/thread-1497770-1-1.html (Source: Haichuan Chemical Engineering Forum) [Image of the Day] 11.16 What kind of device is this? http://bbs.hcbbs.com/thread-1497766-1-1.html (Source: Haichuan Chemical Forum) [Picture of the Day] What is this device from 11.16? http://bbs.hcbbs.com/thread-1497755-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] What is this structure from 11.16? http://bbs.hcbbs.com/thread-1497742-1-1.html (Source: Haichuan Chemical Engineering Forum) [Image of the Day] 11.13 What’s inside the reactor? http://bbs.hcbbs.com/thread-1496614-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] What is this tank in front of the pump on 11.13? http://bbs.hcbbs.com/thread-1496596-1-1.html (Source: Haichuan Chemical Forum) Dry Gas and Wastewater Section [One Question per Day] Summary Thread – Updated daily by the moderator. http://bbs.hcbbs.com/thread-1496486-1-1.html (Source: Haichuan Chemical Forum) Petrochemical Deep Processing Section [One Question per Day] Summary Thread – Updated daily by the moderator. http://bbs.hcbbs.com/thread-1496481-1-1.html (Source: Haichuan Chemical Forum) Catalysis, Coking, and Reforming Section [One Question per Day] Summary Thread – Updated daily by the moderator. http://bbs.hcbbs.com/thread-1496475-1-1.html (Source: Haichuan Chemical Forum) Petroleum Pretreatment Section [One Question per Day] Summary Thread – Updated daily by the moderator. http://bbs.hcbbs.com/thread-1496443-1-1.html (Source: Haichuan Chemical Forum) Hydrogen Production and Hydrogenation Technology Section [One Question per Day] Summary Thread – Updated daily by the moderator. http://bbs.hcbbs.com/thread-1496436-1-1.html (Source: Haichuan Chemical Forum) [One Image per Day] What’s happening on 11/12? http://bbs.hcbbs.com/thread-1495809-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] What is being done on 11.12? http://bbs.hcbbs.com/thread-1495805-1-1.html (Source: Haichuan Chemical Industry Forum) [Picture of the Day] What is being done on 11.12? http://bbs.hcbbs.com/thread-1495575-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.12 – How to lift heavy objects (Correct answer +5 wealth points) http://bbs.hcbbs.com/thread-1495533-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.4 – True or False questions: The Brave One’s Challenge http://bbs.hcbbs.com/thread-1489906-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.3 – True or False questions: Safety valves based on gas discharge methods http://bbs.hcbbs.com/thread-1489682-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.3 – True or False questions: The main types of energy losses in centrifugal compressors http://bbs.hcbbs.com/thread-1489676-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.1 – Multiple-choice question: What is the most impressive job position? http://bbs.hcbbs.com/thread-1488060-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.1 – Multiple-choice question: What is the most impressive job position? http://bbs.hcbbs.com/thread-1488058-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.1 – Multiple-choice question: What is the most impressive job position? http://bbs.hcbbs.com/thread-1488046-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.1 – Multiple-choice question: What is the most impressive job position? http://bbs.hcbbs.com/thread-1488045-1-1.html (Source: Haichuan Chemical Forum) [Daily Question] 11.1 – Multiple-choice question: What is the most impressive job position? http://bbs.hcbbs.com/thread-1488044-1-1.html (Source: Haichuan Chemical Forum) Total of 45 items. II. Voting, Daily Questions. Section where the activity takes place: Petrochemical Activities Section. Person in charge of the activity: Yitailong Er. Person responsible for posting questions: Guan Gongyu. [Petrochemical Section] Selection of the best member of November & competition for the ticket to become the best member of the year (Replying gives +2 wealth points) http://bbs.hcbbs.com/thread-1505981-1-1.html (Source: Haichuan Chemical Forum) I’d like to ask: Do you think there are enough employees for the positions available? http://bbs.hcbbs.com/thread-1495031-1-1.html (Source: Haichuan Chemical Forum) [Catalytic Reforming Section] Challenge for Team Leaders Event Thread http://bbs.hcbbs.com/thread-1491815-1-1.html (Source: Haichuan Chemical Forum) [This Week’s Topic] How to Improve Anti-freezing and Anti-condensation Measures in Winter (Replies +20; chance to win a water bottle) http://bbs.hcbbs.com/thread-1491749-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] My “Most” Crazy and Difficult 37-Step Journey 07+ Guan Gongyu http://bbs.hcbbs.com/thread-1488408-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] My “Most” Crazy – The Toughest Man 05+ Guan Gongyu http://bbs.hcbbs.com/thread-1488163-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Section] “Question Chain” Game – Only Real Men Should Reach Floor 100 Promotion Thread http://bbs.hcbbs.com/thread-1490469-1-1.html (Source: Haichuan Chemical Forum) [Oil Pretreatment Sub-section] “Question Chain” Game – Only Real Men Should Reach Floor 100 http://bbs.hcbbs.com/thread-1490484-1-1.html (Source: Haichuan Chemical Forum) [Coking and Catalytic Reforming Sub-section] “Question Chain” Game – Only Real Men Should Reach Floor 100 http://bbs.hcbbs.com/thread-1490491-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Deep Processing Sub-section] “Question Chain” Game – Only Real Men Should Reach Floor 100 http://bbs.hcbbs.com/thread-1490493-1-1.html (Source: Haichuan Chemical Forum) [Hydrogen Production and Hydrogenation Sub-section] “Question Chain” Game – Only Real Men Should Reach Floor 100 http://bbs.hcbbs.com/thread-1490494-1-1.html (Source: Haichuan Chemical Forum) [Dry Gas and Wastewater Sub-section] “Question Chain” Game – Only Real Men Should Reach Floor 100 http://bbs.hcbbs.com/thread-1490495-1-1.html (Source: Haichuan Chemical Forum) Total of 12 threads. Style: Fangsong. Section where the event takes place: Petroleum Industry Events Section. Event organizers: Yitailonger, Guan Gongyu. Person in charge of posting: Guan Gongyu. [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 28+ Guan Gongyu http://bbs.hcbbs.com/thread-1504007-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 27+ Guan Gongyu http://bbs.hcbbs.com/thread-1504006-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 26+ Guan Gongyu http://bbs.hcbbs.com/thread-1504005-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 25+ Guan Gongyu http://bbs.hcbbs.com/thread-1504004-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 24+ Guan Gongyu http://bbs.hcbbs.com/thread-1504003-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 23+ Guan Gongyu http://bbs.hcbbs.com/thread-1504002-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 21+ Guan Gongyu http://bbs.hcbbs.com/thread-1504000-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – I Collected 22+ Guan Gongyu http://bbs.hcbbs.com/thread-1503999-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – Copying Exercises 30+ Guan Gongyu http://bbs.hcbbs.com/thread-1497445-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – Fangsong Writing Competition 29+ Guan Gongyu http://bbs.hcbbs.com/thread-1497425-1-1.html (Source: Haichuan Chemical Forum) [Petroleum Industry Events] Showcase of “Fangsong” Style – Gasoline Hydrogenation Records 16+ Guan Gongyu http://bbs.hcbbs.com/thread-1497424-1-1.html (Source: Haichuan Chemical Forum) Total of 11 threads. IV. Photo Exhibition Contest: Currently very popular; 7,800 views, 463 participants. Replies. Organizer: Guan Gongyu. Person in charge: Guan Gongyu. “My Facility, My Home” – Photo Exhibition Contest (Each photo = +10 points) http://bbs.hcbbs.com/thread-1495069-1-1.html (Source: Haichuan Chemical Forum). Number of replies: 20 photos in total, 21 entries

Section where the activity takes place: Petrochemical deep processing, hydrogen production and hydrogenation section – 30 articles in total, including one image and one question per day. Person in charge of the activity: Yitailong'er; Deputy supervisor: Guan Gongyu, zf201012. Person responsible for posting the content: Xuewuzhijing166. 1. [One question per day] Multiple-choice question from 11.2: What is the relationship between the flow rate and head of a reciprocating pump? http://bbs.hcbbs.com/thread-1488598-1-1.html 2. 【Daily Question】11.3 True or False: Since hydrogen-related systems are prone to leaks which are not easily detected, it is necessary to conduct regular inspections of such systems... http://bbs.hcbbs.com/thread-1489341-1-1.html 3. 【Daily Question】True or False: 11.5 The use of variable frequency speed control for pump motors enables energy savings by reducing voltage. http://bbs.hcbbs.com/thread-1490837-1-1.html 4. 【Daily Question】Multiple Choice: 11.6 In a shell-and-tube heat exchanger, if the tube bundle becomes blocked due to leaks within the same tube side, ( ). http://bbs.hcbbs.com/thread-1491608-1-1.html 5. 【Daily Question】Multiple Choice: 11.6 For oil processing, the specified temperature limit for the furnace chamber is ≯ (not more than) ( )°C (Hydrogenation section). http://bbs.hcbbs.com/thread-1491715-1-1.html 6. 【Daily Question】11.9 Multiple Choice: The reason why oils lose their fluidity at low temperatures is: ( ). http://bbs.hcbbs.com/thread-1493206-1-1.html 7. 【Daily Question】11.10 Multiple Choice: Gas analysis must be conducted on towers and containers before any welding work is carried out; when the total amount of flammable gases is ≯ http://bbs.hcbbs.com/thread-1494018-1-1.html 8. 【Daily Question】11.11 Multiple Choice: Using ( ) in the production process can increase the octane rating of gasoline. http://bbs.hcbbs.com/thread-1494647-1-1.html 9. [Daily Question] 11.11 – Multiple-choice question: The lowest oil temperature at which oil can ignite spontaneously is called ( ). (Hydrogenation section) http://bbs.hcbbs.com/thread-1494808-1-1.html 10. [Daily Question] 11.12 – True or False question: Under normal circumstances, sulfur has a temporary toxic effect on catalysts, depending on the nature of the feed oil. http://bbs.hcbbs.com/thread-1495416-1-1.html 11. [Daily Question] 11.13 – True or False question: An infrared thermometer uses the infrared radiation emitted by an object to measure that object’s temperature. http://bbs.hcbbs.com/thread-1496178-1-1.html 12. [Daily Question] 11.16 – Multiple-choice question: Which of the following does not belong to the category of equilibrium separation mass transfer processes? http://bbs.hcbbs.com/thread-1497685-1-1.html 13. [Daily Question] 11.17 – Multiple-choice question: What is the reflux ratio? http://bbs.hcbbs.com/thread-1498618-1-1.html 14. [Daily Question] 11.18 – True or False question: The preheating rate of a hot oil pump should be ≤50°C/h. ( ) http://bbs.hcbbs.com/thread-1499329-1-1.html 15. 【Daily Question】11.19 – Multiple-choice question: What is the distillation section? http://bbs.hcbbs.com/thread-1500135-1-1.html 16. 【Daily Image】11.19: What is that inverted trapezoid in this image? http://bbs.hcbbs.com/thread-1500220-1-1.html 17、【Daily Question】11.23 True or False: Pumps use frequency conversion technology mainly to achieve more precise control. ( ) http://bbs.hcbbs.com/thread-1502539-1-1.html 18. [Picture of the Day] 11/23: What kind of pump is shown in the picture above? Does anyone know? http://bbs.hcbbs.com/thread-1502555-1-1.html 19、【Daily Question】11.23 True or False: The intensity of the rotten egg smell of hydrogen sulfide is directly proportional to its concentration. ( ) (Hydrogenation section) http://bbs.hcbbs.com/thread-1502758-1-1.html 20. [Daily Question] 11.24 – True or False: A sensitive tray means that when the purity of the product at the top of the tower changes, the temperature also changes accordingly. http://bbs.hcbbs.com/thread-1503350-1-1.html 21. [Daily Image] 11.24 – Please guess what devices the two items shown in this image are: ( ) and ( ). http://bbs.hcbbs.com/thread-1503463-1-1.html 22. [Daily Question] 11.25 – Essay question: What are the functions of lubricating oil? (Select any five of them.) http://bbs.hcbbs.com/thread-1504070-1-1.html 23. [Picture of the Day] November 25th. Please try to guess the name and function of the device shown in this picture http://bbs.hcbbs.com/thread-1504085-1-1.html 24. 【Picture of the Day】11.26: What is this device in the picture, and what is it used for? http://bbs.hcbbs.com/thread-1505025-1-1.html 25. [Question of the Day] 11.26 – Essay question: What is the content of the five-character operation method? http://bbs.hcbbs.com/thread-1505065-1-1.html 26. [Picture of the Day] 11/27: Take a look at how festive the color of the tank in this picture is. Guess what kind of tank it is? http://bbs.hcbbs.com/thread-1505701-1-1.html 27. [Daily Question] 11.27 – Multiple-choice question: What are the symptoms that occur when flooding takes place? http://bbs.hcbbs.com/thread-1505980-1-1.html 28. [Daily Question] 11.27 – Multiple-choice question: What is the main cause of leakage? (Hydrogenation section) http://bbs.hcbbs.com/thread-1505988-1-1.html 29. [Daily Question] 11.28 – Multiple-choice question: What type of tray does a tongue-shaped tray belong to? (Hydrogenation section) http://bbs.hcbbs.com/thread-1506001-1-1.html 30. [Daily Image] 11.30 – Identify what device is shown in this image http://bbs.hcbbs.com/thread-1507407-1-1.html

Section where the activity takes place: Catalytic Coking/Reforming/Blending section. There are a total of 25 posts, consisting of “Picture of the Day” and “Question of the Day”. Region leaders: Yitailong’er, wj821313389, zf201012, Guan Gongyu. Posting coordinator: yuzp000. 1. [Picture of the Day] December 1st. This should be present in every unit; let’s see if you know what it is ...23 Catalytic coking/reforming/blending yuzp000 2. [Picture of the Day] November 30 – Take a look, what is this? ? ? ? ? ...2 Catalytic coking/reforming/blending yuzp000 3. [Picture of the Day] November 27th: See if you recognize it? ...23 Catalytic coking/reforming/blending yuzp000 4. [Picture of the Day] November 26 – What do you think this is? ? ? ? ? ? ? ? ? ? ? ...234 Catalytic coking/reforming/blending yuzp000 5. [Picture of the Day] November 25 – Those who have done it know. ...2 Catalytic coking/reforming/blending yuzp000 6. [Question of the Day] November 24: The K value, which represents the characteristics of petroleum products, is the average boiling point of the petroleum product and what else? ? ? function of. ...2 Catalytic coking/reforming/blending yuzp000 7. [Image of the Day] November 23: What is this? Those who’ve done it know. ...2 Catalytic coking/reforming/tuning yuzp000 8. [Question of the Day] November 23: Which of the following methods can enhance heat transfer? ? ? ? ...23 Catalytic coking/reforming/blending yuzp000 9. [Question of the Day] November 20: For what purposes are general pipelines used? ? ? ? ? ...2 Catalytic coking/reforming/tuning yuzp000 10. [Question of the Day] November 19: What should be done to the gas before igniting the heater? ? ? ? Analysis... 2 Catalytic coking/reforming/blending yuzp000 11. 【Picture of the Day】 November 18 – What is this? ? ? ? ? ? ...23 Catalytic coking/reforming/blending yuzp000 12. 【Question of the Day】 November 18: What is the medium used for the airtightness test of centrifugal compressors? ? ...23 Catalytic coking/reforming/blending yuzp000 13.【Daily Question】 November 17: What should be the pressure control for the air purification system? ? ? ? ? ...2 Catalytic coking/reforming/blending yuzp000 14. 【Daily Question】 November 16: Which of the following products has the lowest flash point? ? ? ...2 Catalytic coking/reforming/blending yuzp000 15. 【Daily Question】 November 13: What is the function of the reflux at the top of a distillation column? ...2 Catalytic coking/reforming/blending yuzp000 16.【Question of the Day】November 14: What should be used for flue gas sampling? ? ? Catalytic coking/reforming/blending yuzp000 17. 【Question of the Day】November 12: Where does the coking reaction take place? ? ? Carried out. ...2 Catalytic coking/reforming/blending yuzp000 18. 【Daily Question】 November 11: What is it that transmits torque and serves to open and close the gate valve? ? ? Catalytic coking/reforming/blending yuzp000 19. 【Daily Question】 November 10: What is the main type of friction in commonly used contact mechanical seals? ? ? ...2 Catalytic coking/reforming/blending yuzp000 20. 【Question of the Day】 November 9th: The more stages a pump has, what happens to its flow rate? ? ? ? ? ...23 Catalytic coking/reforming/blending yuzp000 21.【Daily Question】 November 5 – Can coke be removed online through the furnace tubes? ? ? Significant changes are made to achieve the purpose of removing coke. Catalytic coking/reforming/blending yuzp000 22. 【Daily Question】 November 5th: What can occur as a result of excessive steam flow? ? ? ? Catalytic coking/reforming/blending yuzp000 23. 【Daily Question】 November 4: Can the coke pressure be increased? ? Pressure relief, catalytic coking/reforming/blending yuzp000 24. 【Daily Question】 November 3 – What are the causes of failure in the glass sheet level detection system? ...2 Catalytic coking/reforming/blending yuzp000 25. [Question of the Day] November 2: What are the lower and upper limits of gasoline’s explosiveness? ...2 Catalytic coking/reforming/blending yuzp000

Section where the activity takes place: The “One Image per Day” and “One Question per Day” sections under the Petroleum Pretreatment category, totaling 24 articles. Regional manager: Yitailong Er, wj821313389, zf201012, Guan Gongyu. Person responsible for posting questions: Adventure Wang. [One Question per Day] 11.2 – True or False question: The operating mode of the foam breaker. [One Question per Day] 11.4 – True or False question: Oil density. [One Question per Day] 11.5 – True or False question: What does the vapor pressure of petroleum products depend on? [One Question per Day] 11.6 – True or False question: The freezing point of oil in the first distillation line is affected by the withdrawal rate of the atmospheric pressure tower. [One Question per Day] 11.7 – True or False question: Vacuum distillation allows oils to vaporize at lower temperatures, preventing severe damage to the oils... [One Question per Day] 11.9 – True or False question: The penetration value of lubricating grease. [One Question per Day] 11.10 – True or False question: Centrifugal pumps are not suitable for use with media having high viscosity. [One Question per Day] 11.11 – True or False question: Operating two centrifugal pumps together. [One Question per Day] 11.12 – True or False question: The head produced by a centrifugal pump increases as the flow rate increases. [One Question per Day] 11.13 – True or False question: Running the pump in reverse can cause significant damage to it. [One Question per Day] 11.14 – True or False question: Heat generation in the bearing box is a precursor to the pump seizing up. [One Question per Day] 11.18 – True or False question: If the dry point of a fraction is high, then its freezing point is also high. [One Question per Day] 11.21 – Describe based on the image. [One Question per Day] 11.22 – True or False question: Two-stage condensation compared to single-stage condensation. [One Question per Day] 11.23 – True or False question: Wet vacuum distillation. [One Image per Day] 11.23 – Describe based on the image. [One Question per Day] 11.25 – True or False question: Changes in the diameter of the vacuum distillation tower. [One Image per Day] 11.25 – Describe based on the image. [One Image per Day] 11.26 – Describe based on the image. [One Question per Day] 11.26 – True or False question: The number of trays in a distillation tower. [One Image per Day] 11.28 – Describe based on the image. [One Question per Day] 11.28 – Fill-in-the-blank question: What is obtained at the top of the tower after crude oil is distilled in an atmospheric pressure tower? [One Image per Day] 11.30 – Describe based on the image. [One Question per Day] 11.30 – One question per day

Section where the activity takes place: The \"Dry Gas and Wastewater\" section, featuring 24 posts in total – one image per day and one question per day. Person in charge of the activity: Yitailonger. Deputy supervisor: Guan Gongyu. Person responsible for posting the content: xc445408333. [Daily Image] December 3: Guess what device this is Correct +10 Wealth http://bbs.hcbbs.com/thread-1509585-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Question of the Day】12.3 True or False: The equation for the complete combustion of hydrogen sulfide in the presence of sufficient air is http://bbs.hcbbs.com/thread-1509540-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Question of the Day】12.4 True or False: The more decimal places there are in a measurement value, the more accurate the measurement is http://bbs.hcbbs.com/thread-1510285-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Picture of the Day】12.4 Guess what kind of equipment this is? Correct +10 Wealth http://bbs.hcbbs.com/thread-1510291-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Daily Question】Dec 5 True or False: The more decimal places retained in the calculation result, the higher the precision. http://bbs.hcbbs.com/thread-1511017-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Daily Picture】Dec 5 Guess what kind of equipment this is? Correct +10 wealth http://bbs.hcbbs.com/thread-1511020-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.6 True or False: Every non-zero digit in measurement data is a significant figure http://bbs.hcbbs.com/thread-1511455-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.6 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1511466-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.7 Short answer: Why is it necessary to control the level of PO43- in boiler water? http://bbs.hcbbs.com/thread-1512009-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Picture】12.7 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1512023-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.8 Fill-in-the-blank question: The structure of a horizontal thermosyphon reboiler is actually that of a regular heat exchanger; the only difference lies in the shell side... http://bbs.hcbbs.com/thread-1512607-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.8 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1512628-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.9 Fill-in-the-blank: The main purpose of connecting pumps in series is (), while the main purpose of connecting pumps in parallel is (). http://bbs.hcbbs.com/thread-1513316-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.9 Guess: What device is this? Easy questions – correct answers earn +10 wealth points. http://bbs.hcbbs.com/thread-1513324-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Question of the Day】12.10 Fill-in-the-blank: The fins added to the outside of air cooler tubes mainly serve to enhance (), thereby further increasing... http://bbs.hcbbs.com/thread-1514052-1-1.html (Source: Haichuan Chemical Engineering Forum) 【Picture of the Day】12.10 Guess what kind of equipment this is? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1514064-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.11 True or False: The distillation process is a process of mass and heat transfer in both directions. http://bbs.hcbbs.com/thread-1514857-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Image】12.11 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1514871-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.12 True or False: After cleaning towers, containers, etc. with steam in winter, it is necessary to close the vent valves to prevent freezing: http://bbs.hcbbs.com/thread-1515582-1-1.html (Source: Haichuan Chemical Industry Forum) 12.12 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1515587-1-1.html (Source: Haichuan Chemical Forum) 【Daily Question】12.13 True or False: A high content of alkanes in the raw materials results in a lower octane rating of the gasoline produced. http://bbs.hcbbs.com/thread-1515977-1-1.html (Source: Haichuan Chemical Forum) 12.13 Guess: What device is this? Correct answer +10 wealth points: http://bbs.hcbbs.com/thread-1515980-1-1.html (Source: Haichuan Chemical Industry Forum) 【Daily Question】12.14 – Define the term: gradual vaporization: http://bbs.hcbbs.com/thread-1516340-1-1.html (Source: Haichuan Chemical Industry Forum) 12.14 – Guess what kind of equipment this is? Correct +10 wealth http://bbs.hcbbs.com/thread-1516350-1-1.html (Source: Haichuan Chemical Industry Forum)

This post was last edited by XueWuZhiJing166 on 2015-12-15 at 16:26. Section where the event takes place: Petrochemical Deep Processing, Hydrogen Production and Hydrogenation Section. There are a total of 24 posts in the “Picture of the Day” and “Question of the Day” sections; among them, 2 posts are related to weekly topics. Event coordinator: Yitailong’er. Deputy moderators in charge: Guan Gongyu and zf201012. Posting coordinator: XueWuZhiJing166. 1. [Question of the Day] 12/1: Short-answer question – What is the function of the check valve at the pump outlet? http://bbs.hcbbs.com/thread-1508094-1-1.html 2. 【Picture of the Day】12.1 What is the name of the device shown in this picture? http://bbs.hcbbs.com/thread-1508104-1-1.html 3. 【Question of the Day】12.1 What instruments are used to measure the liquid level in oil refining units? http://bbs.hcbbs.com/thread-1508179-1-1.html 4. 【Picture of the Day】12.2 What is the device in this picture? http://bbs.hcbbs.com/thread-1508739-1-1.html 5. [Picture of the Day] 12.3: What is the name of this device on top of the storage tank? Those who answer correctly will receive 10 wealth points! http://bbs.hcbbs.com/thread-1509612-1-1.html 6. [Picture of the Day] On 12.4, take a look at what device is shown in this picture http://bbs.hcbbs.com/thread-1510467-1-1.html 7. [Picture of the Day] 12.5 What’s the name of the device in this picture? What is its function? http://bbs.hcbbs.com/thread-1511227-1-1.html 8. [Picture of the Day] 12.7: What type of measuring device is this on the top of the oil storage tank? http://bbs.hcbbs.com/thread-1511969-1-1.html 9. [Question of the Day] Supplementary post from Dec 7: True or False? The purpose of injecting stripping water into the stripper is mainly to reduce the partial pressure of hydrocarbons in the rich solvent. .. http://bbs.hcbbs.com/thread-1512118-1-1.html 10. 【Daily Question】12.8 Supplementary: Multiple-choice question. The most widely used pressure relief valve is ( ). http://bbs.hcbbs.com/thread-1512810-1-1.html 11. 【Daily Image】12.8: Identify the equipment installed at the bottom of the tower in this image http://bbs.hcbbs.com/thread-1512826-1-1.html 12. 【Picture of the Day】12.9: What is the name of the device shown in this picture? http://bbs.hcbbs.com/thread-1513365-1-1.html 13. 【Daily Question】Reissued on 12.9: Multiple-choice question. The safety valve that is widely used in the production of petrochemical plants is ( ). http://bbs.hcbbs.com/thread-1513689-1-1.html 14. 【Daily Image】12.10: What kind of facility is shown in this image? Those who can answer about the device/product will be rewarded with 10 wealth points: http://bbs.hcbbs.com/thread-1514137-1-1.html. 15. [Daily Question] Reissued on 12.10: After installing ( ) on a pressure vessel, it is possible to directly measure the pressure of the medium inside the vessel: http://bbs.hcbbs.com/thread-1514437-1-1.html. 16. [Daily Image] 12.11: Does anyone know what this testing device is? 10 wealth points for those who answer correctly! http://bbs.hcbbs.com/thread-1515020-1-1.html 17. [Daily Question] Supplementary questions for 12.11 – multiple-choice questions. For containers whose working medium is toxic or flammable gases, please refer to http://bbs.hcbbs.com/thread-1515044-1-1.html 18. [Weekly Topic] Friends on the Haichuan Forum, please discuss, based on your own work positions, whether you work in shift systems. http://bbs.hcbbs.com/thread-1515117-1-1.html 19. [Daily Image] What is the name of the equipment shown in this image? What is its function? http://bbs.hcbbs.com/thread-1515389-1-1.html 20. [Picture of the Day] 12/14: Can you tell what equipment is shown in this picture? http://bbs.hcbbs.com/thread-1516452-1-1.html 21. 【Daily Question】Reissued on 12.14: Multiple-choice question. The stability of gasoline refers to ( ). http://bbs.hcbbs.com/thread-1516593-1-1.html 22. 【Weekly Topic】12.14: Based on your actual work experience in your position, discuss what was the greatest achievement for you in 2015. http://bbs.hcbbs.com/thread-1516729-1-1.html 23. 【Daily Question】Reissued on 12.15: True or False question. The larger the excess air coefficient, the higher the thermal efficiency of the heating furnace. http://bbs.hcbbs.com/thread-1517433-1-1.html 24. 【Daily Image】12.15: What is this in this image? http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1517247&page=1&extra=#pid14798585

Section where the activity is held: The “Catalytic Coking/Reforming/Blending” section, which includes 25 articles in total – one image and one question per day. Regional manager: Yitailong Er, wj821313389, zf201012, Guan Gongyu. Person responsible for posting: yuzp000. [Daily Question] On December 13th, petroleum fractions are generally characterized by ( ) to indicate their evaporation and vaporization properties. agree ...2 Catalytic coking/reforming/blending 【Daily Question】 December 14th True/False question agree ...2 Catalytic coking/reforming/blending 【Daily Question】 December 11th True/False question ...2 Catalytic coking/reforming/blending 【Daily Question】 December 10th True/False question agree ...23 Catalytic coking/reforming/blending【Daily Question】 December 9th True/False question agree ...2 Catalytic coking/reforming/blending 【Daily Question】 December 8th Is a keyboard a type of computer? ? Equipment agree ...23 Catalytic coking/reforming/blending 【Daily Question】 December 7 What is the pressure difference between the top and bottom of the rotor in a rotor flow meter? ? Decision: agree ...23 Catalytic coking/reforming/blending 【Daily Question】December 6: Among the options given, which one is a level gauge that measures based on the principle of changing buoyancy? ? ? agree Catalytic coking/reforming/blending 【Daily Question】 December 5: When measuring substances that are corrosive, prone to freezing, prone to forming solids, or have high viscosity, one should... agree ...2 Catalytic coking/reforming/blending 【Daily Question】 December 4: When aluminum wires are used for the grounding wires of electrical equipment in a plant, what should be the minimum cross-sectional area of such wires? ? ...2 Catalytic coking/reforming/blending 【Daily Question】 December 3rd Among the following options, which one is not a criterion for selecting a cascade control system? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 December 2: What is the common voltage rating for low-pressure motors used in fuel oil production units along with pumps? ? ...2 Catalytic coking/reforming/blending 【Picture of the Day】 December 1st. This should be available in every plant – see if you know it? Heat level agreed... 234. Catalytic coking/reforming/blending. [Picture of the Day] November 30 – Take a look, what is this? ? ? ? ? attach_img ...2 Catalytic coking/reforming/blending 【Picture of the Day】 November 27 – Do you recognize it? attach_img agree ...23 Catalytic coking/reforming/blending 【Picture of the Day】 November 26th – Take a look, what is this? ? ? ? ? ? ? ? ? ? ? attach_img heatlevel agree ...234 Catalytic coking/reforming/blending 【Daily Image】 November 25th – Those who have done it know. attachment agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 24th: What is the average boiling point of a petroleum product, relative to which value, is the K factor for that petroleum product determined? ? ? function of. agree ...2 Catalytic coking/reforming/blending 【Picture of the Day】 November 23rd What is this? Those who’ve done it know. attach_img agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 23: Which of the following methods can enhance heat transfer? ? ? ? agree ...23 Catalytic coking/reforming/blending 【Daily Question】 November 20th: Is it used for normal pipeline connection? ? ? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 19: What should be done to the gas before igniting the heater? ? ? ? Analysis: agree ...2 Catalytic coking/reforming/blending 【Picture of the Day】 November 18th What is this? ? ? ? ? ? attach_img heatlevel agree ...23 Catalytic coking/reforming/blending 【Daily Question】 November 18: What is the medium used for the airtightness test of centrifugal compressors? ? agree ...23 Catalytic coking/reforming/blending 【Daily Question】 November 17: What should be the pressure control for the purified air system? ? ? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 16: Which of the following products has the lowest flash point? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 13: What is the function of the reflux at the top of a distillation tower? agree ...2 Catalytic coking/reforming/blending 【Daily Question】November 14: What should be used for flue gas sampling? ? ? Catalytic coking/reforming/blending 【Daily Question】November 12: Where does the coking reaction take place? ? ? Carried out. Agree... 2 Catalytic coking/reforming/mixing 【Question of the Day】 November 11: What can transmit torque and serve to open/close the gate valve? ? ? agree Catalytic coking/reforming/blending 【Daily Question】 November 10: What is the main type of friction in commonly used contact mechanical seals? ? ? Agree... 2 Catalytic coking/reforming/mixing 【One question per day】 November 9: The more stages a pump has, the ___ its flow rate? ? ? ? ? agree ...23 Catalytic coking/reforming/blending 【Daily Question】 November 5 – Can coke be removed online through the furnace tubes? ? ? Significant changes are made to achieve the purpose of removing coke. agree Catalytic coking/reforming/blending 【Daily Question】 November 5th: Excessive steam flow can cause what? ? ? ? agree Catalytic coking/reforming/blending 【Daily Question】 November 4th: Can the coke vessel be opened due to overpressure? ? Pressure relief, catalytic coking/reforming/blending 【Daily Question】 November 3 – What are the causes of failure in the glass plate level sensor? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 November 2: What are the upper and lower limits for the ignition temperature of gasoline? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 October 19: What is the gas alarm phone number? ? ? ? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 October 14: The ignition medium is gasoline; which fire extinguishing method cannot be used? ? ? ? ? ? ? Agree... 23 Catalytic coking/reforming/blending 【Question of the Day】 October 12: What does the grade of lubricating oil generally correspond to at 50 degrees Celsius? ? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 October 11: What is the typical grade of lubricating oil used in centrifugal pumps? ? ? ? Agree... 23 Catalytic coking/reforming/mixing 【Question of the Day】 September 30: Under what conditions must fire extinguishers be recharged? ? ? ? ? ? ? ? ? ? ...23 Catalytic coking/reforming/mixing 【Question of the Day】 September 24: Among the following options, which control valve does not require any flow direction selection? ? ? ...2 Catalytic coking/reforming/blending 【Daily Question】 September 23: What is the step voltage that the human body can tolerate? ? ? ...2 Catalytic coking/reforming/blending 【Question of the Day】 September 17. What are the methods for pollutant recovery? ? ? agree ...2 Catalytic coking/reforming/blending 【Daily Question】 September 16 – What is not allowed to appear in the shift handover records? ? ? ? agree...2