Hydrogen production and hydrogenation technology version [Daily Question] compilation post – updated daily by the moderator
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This post was last edited by Guan Gongyu on 2015-11-13 at 13:56. The Hydrogen Production and Hydrogenation Technology section’s 【Daily Question】 compilation thread is provided to help everyone refer to past questions and study on their own. Requirements for posting a daily question: Post it every day; visible only to the author; the answer is hidden; replies are visible; it boosts progress by one unit per day, highlights it for one week; manual scoring; summarized in this post! ============================================================================================================== 18【Daily Question】11.13 Multiple-choice question: When hydrogen embrittlement occurs on the surface of steel, it manifests as http://bbs.hcbbs.com/thread-1496282-1-1.html (Source: Haichuan Chemical Industry Forum). 17【Daily Image】11.12: What is this used for? http://bbs.hcbbs.com/thread-1495805-1-1.html (Source: Haichuan Chemical Industry Forum) 16【Daily Question】11.2 Multiple-choice question: What is the relationship between the flow rate and head of a reciprocating pump? http://bbs.hcbbs.com/thread-1488598-1-1.html (Source: Haichuan Chemical Industry Forum) 15【Daily Question】11.4 Multiple-choice question: In an emergency, the emergency shut-off valves should be closed from high pressure to low pressure at the field level. http://bbs.hcbbs.com/thread-1489945-1-1.html (Source: Haichuan Chemical Industry Forum) 14【Daily Question】11.12 Multiple-choice question: The heavy metal content in hydrogenation feedstock can be controlled by… http://bbs.hcbbs.com/thread-1495408-1-1.html (Source: Haichuan Chemical Industry Forum) 13【Daily Question】11.11 Multiple-choice question: The lowest oil temperature at which oil can self-ignite is called ( ). http://bbs.hcbbs.com/thread-1494808-1-1.html (Source: Haichuan Chemical Industry Forum) 12【Daily Question】Multiple-choice question: 11.10 During nitrogen purging of the hydrogenation system, the safety valve should… http://bbs.hcbbs.com/thread-1493868-1-1.html (Source: Haichuan Chemical Industry Forum) 11【Daily Question】True/False question: 11.8 During actual catalyst presulfidization, … http://bbs.hcbbs.com/thread-1492667-1-1.html (Source: Haichuan Chemical Industry Forum) 10【Daily Question】Multiple-choice question: 11.6 For oil processing, the specified furnace temperature for heating furnaces is ≤ (not more than) ( )°C. http://bbs.hcbbs.com/thread-1491715-1-1.html (Source: Haichuan Chemical Industry Forum) 9【Daily Question】Multiple-choice question: 11.9 When sulfiding hydrogenation catalysts, once the H2S partial pressure in the recycle hydrogen reaches a certain value, … http://bbs.hcbbs.com/thread-1493109-1-1.html (Source: Haichuan Chemical Industry Forum) 8【Daily Question】Multiple-choice question: 11.7 For austenitic stainless steel equipment or valves that do not require maintenance, … http://bbs.hcbbs.com/thread-1492212-1-1.html (Source: Haichuan Chemical Industry Forum) 7【Daily Question】11.5 Multiple-choice question: Even when hydrogen-resistant steel is used, during shutdown procedures, … http://bbs.hcbbs.com/thread-1490740-1-1.html (Source: Haichuan Chemical Industry Forum) 6【Daily Question】11.3 True/False question: Since hydrogenation systems are prone to leakage and such leaks are not easy to detect, it is necessary to regularly inspect these systems… http://bbs.hcbbs.com/thread-1489341-1-1.html (Source: Haichuan Chemical Industry Forum) 5【Daily Question】10.29 Multiple-choice question: After removing all oil from the container during shutdown, it should be purged with steam for ( ) hours. http://bbs.hcbbs.com/thread-1486333-1-1.html (Source: Haichuan Chemical Industry Forum) 4【Daily Question】10.27 True/False question: When drying hydrogenation catalysts, the higher the system pressure and the greater the compressor displacement, the better the drying effect… http://bbs.hcbbs.com/thread-1484789-1-1.html (Source: Haichuan Chemical Industry Forum) 3【Daily Question】10.27 Multiple-choice question: During catalyst presulfidization, at a certain pressure, there is an optimal value… http://bbs.hcbbs.com/thread-1486250-1-1.html (Source: Haichuan Chemical Industry Forum) 2 Daily Question: 10.28 When shutting down a pump urgently, the outlet valve should be closed first, followed by stopping the motor. http://bbs.hcbbs.com/thread-1485624-1-1.html (Source: Haichuan Chemical Industry Forum) 1【Daily Question】10.26 True/False question: Apart from cases where shutdown is approved according to procedures, all alarm interlocks must be activated. http://bbs.hcbbs.com/thread-1484022-1-1.html (Source: Haichuan Chemical Industry Forum)
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: Yitailonger. 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 and these leaks 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 helps save energy 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 a leak 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: Before performing any work on towers and containers, gas analysis must be 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 poisoning effect on catalysts, depending on the nature of the crude oil. http://bbs.hcbbs.com/thread-1495416-1-1.html 11. [Daily Question] 11.13 – True or False question: An infrared thermometer utilizes 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 this inverted trapezoid in the 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 type of pump is shown in the above image? 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 refers to one in which the temperature changes accordingly when the purity of the product at the top of the tower changes. 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? (Answer any five of them.) http://bbs.hcbbs.com/thread-1504070-1-1.html 23. 【Picture of the Day】11.25 – Please guess the name and function of the device 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 where is it used? http://bbs.hcbbs.com/thread-1505025-1-1.html 25. [Question of the Day] November 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】November 27: 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