English — Forum #723 (Page 552/642)

1. With the prospects in the chemical industry being so poor these days, what industry would be a good choice? - HCBBS Forum
2. Sulfur emissions are on the high side - HCBBS Forum
3. The problem of compressors compressing the gas at the top of the tower - HCBBS Forum
4. Questions about reciprocating compressors - HCBBS Forum
5. The issue of reflux changes in Chang Er Middle School - HCBBS Forum
6. 【Daily Question】2015.08.22 Metal Temperature (2 wealth points for a reply, plus 3–8 additional wealth points for a correct answer) - HCBBS Forum
7. Signs on cranes that cannot be ignored - HCBBS Forum
8. What do the additional conditions for the process flow under the highest pressure generally refer to? - HCBBS Forum
9. New technologies, new equipment, and new processes for industrial sludge treatment - HCBBS Forum
10. When designing a bridge crane, it is essential to identify the key points - HCBBS Forum
11. The significance of increasing the number of yarn bundles per lane - HCBBS Forum
12. What are the reasons for the short service life of the upper and lower valves of the ash lock in coal pulverization pressurized gasification? - HCBBS Forum
13. Backfill sand inside the foundation of the heat transfer oil furnace - HCBBS Forum
14. Methanol washing issue - HCBBS Forum
15. What should the inlet and outlet valves be in when starting and stopping a centrifugal pump? - HCBBS Forum
16. Is it possible for phase change to occur on both sides of a plate heat exchanger? - HCBBS Forum
17. My wedding is in a month, and I’ve decided to get my betrothal gifts back - HCBBS Forum
18. Incident Handling 22: What are the hazards of excessive fluidization air at the bottom of the return feeder in a circulating fluidized bed boiler? - HCBBS Forum
19. 【Daily Question】Question from Issue 20150828 - HCBBS Forum
20. Low-flow liquid turbine flow meter - HCBBS Forum
21. Estimated amount of material for the head cover - HCBBS Forum
22. The necessity of coal-to-natural gas - HCBBS Forum
23. Is it compliant and legal to have a liquefied gas loading station above an underground long-distance crude oil pipeline? - HCBBS Forum
24. The formula for calculating the K value in the example on page P252 of the association’s book differs from that in the textbook on principles of chemical engineering - HCBBS Forum
25. Why are the heat capacity and specific heat equal in HYSYS? - HCBBS Forum
26. Which are the good manufacturers of acid-resistant high-pressure centrifugal pumps in Shandong? - HCBBS Forum
27. 【Daily Question】August 23 – Fill-in-the-blank question: Tower load (2 wealth points for a reply, plus an additional 3–8 wealth points if the answer is correct) - HCBBS Forum
28. Several methods for the synthesis of pyridoxal salt acid - HCBBS Forum
29. Food topic 26: Is it better to eat cucumbers with the skin removed or without it? - HCBBS Forum
30. Use of MLD-SW and VELLIM modules in the Yokogawa CS3000 system - HCBBS Forum
31. Welcome to the Methanol to Olefins and Olefins Conversion group 174312412, to facilitate communication and discussion among members. - HCBBS Forum
32. PID control can be tricky and cumbersome; take a look at the two-wire pressure transmitters that come equipped with a universal model regulator function – how simple is it to carry out regulation in this case? - HCBBS Forum
33. There is an issue with the interface that opens for layout search - HCBBS Forum
34. How to properly lubricate planetary reduction motors - HCBBS Forum
35. Is it feasible to use a stainless steel pipe with an outer diameter of 60 mm and a wall thickness of 3.5 mm to withstand a pressure of 16 MPa? - HCBBS Forum
36. The entire plant’s fuel system affects the temperature of the furnace; I would like to ask fellow experts for any good suggestions - HCBBS Forum
37. What are the responsibilities of a catalytic cracking technician? - HCBBS Forum
38. Is there anyone at Tenglong Aromatics? What is the scale of their air separation and air compression facilities? - HCBBS Forum
39. Are the isothermal transformation process and catalyst reliable? Let’s all come and discuss it - HCBBS Forum
40. 【Daily Question】August 27 What color should fire steam pipelines be? - HCBBS Forum
41. Sign-in record post from August 24, 2015 - HCBBS Forum
42. Why does the sum of the chemical components of materials such as alloys be less than 100%? - HCBBS Forum
43. Heating furnace knowledge - HCBBS Forum
44. Seek welding procedures for TOOL STEEL H13 and AISI 304 SS - HCBBS Forum
45. Help: Does anyone know what to do if a whole cigarette has dried out, and how to get it back to normal? - HCBBS Forum
46. Alumina extraction from acid-treated fly ash - HCBBS Forum
47. How many new Shell boilers are needed domestically? - HCBBS Forum
48. Question: The time required for electrical desalination and dehydration of crude oil - HCBBS Forum
49. After hydrogenation of the gasoline, the doctor’s tests showed failure, but it passed after adding 13% MTBE and 5% aromatics - HCBBS Forum
50. A letter received by the boss of a chemical company after the explosion in Tianjin - HCBBS Forum
51. I have a question: How is the roundness deviation of pressure vessels subjected to internal pressure measured? What tools are used, and what are the specific procedures? - HCBBS Forum
52. What does it mean for oil product intermediaries to resell tickets? - HCBBS Forum
53. Pipeline flame arrester issues - HCBBS Forum
54. Newbie seeking help in membrane technology field - HCBBS Forum
55. Maintenance of air separation low-temperature control valves - HCBBS Forum
56. Safety signs at the lubricant station in the refinery - HCBBS Forum
57. [Weekly Topic] Discussing the operational stability of refining and chemical processing units - HCBBS Forum
58. How to define the sensitivity plate in a packed tower and determine its location - HCBBS Forum
59. The water removal issue in ethyl formate - HCBBS Forum
60. Are there any sulfur drying devices that are effective and require little space? - HCBBS Forum
61. 【Daily Question】Question from Issue 20150823 - HCBBS Forum
62. With stricter environmental regulations now, how should the gases emitted during the loading of formaldehyde be handled? - HCBBS Forum
63. Some issues regarding the process design of sulfuric acid production - HCBBS Forum
64. Problems with Krohne Optiswirl 4070 - HCBBS Forum
65. 【Daily Question】Wastewater Knowledge (August 21) (2 points for an answer, 4 points for a correct answer) - HCBBS Forum
66. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 151 - HCBBS Forum
67. Interesting chemical engineering exam question – 6: If you have studied the principles of chemical engineering transport processes, take a look at this question. - HCBBS Forum
68. Why are the locations of sulfidation and passivation different? - HCBBS Forum
69. Daily Question 2015.8.28 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
70. What wind protection details should crane operators pay attention to? - HCBBS Forum
71. What is the principle behind detecting broken chains in slag scoopers? - HCBBS Forum
72. Job search – 11 years of experience in chemical project management - HCBBS Forum
73. Adipate esterification hydrogenation catalyst? ? - HCBBS Forum
74. The design institute does not provide the architectural drawings - HCBBS Forum
75. How are ion exchange resins classified based on their structure? - HCBBS Forum
76. The issue of separate installation of storage tanks in the tank farm - HCBBS Forum
77. How to check whether the optical path of an infrared analyzer is balanced - HCBBS Forum
78. “The Old Man’s Seven Realizations” (by Zhao Puchu) is worth reading! - HCBBS Forum
79. Can someone give me the CAESAR II for 2013? - HCBBS Forum
80. The surge line of a centrifugal compressor - HCBBS Forum
81. Economic flow rate? Fluid sound speed? Throttle? ! - HCBBS Forum
82. Can HAZOP analysis be used for process node analysis? Then, dividing this node is a bit difficult. . . - HCBBS Forum
83. What is the impact of excessive cold reflux at the top of the stabilizer tower in the coking absorption stabilization unit, and of low temperatures at the tower top, on liquefied gas C5 and dry gas C3? - HCBBS Forum
84. How to deal with leaks in low-pressure gas systems - HCBBS Forum
85. Activated carbon adsorption and desorption issues - HCBBS Forum
86. I would appreciate it if experts could advise me: does catalytic or cokerized liquefied gas contain dimethyl ether? If it is present, what is the typical PPM level? Thank you - HCBBS Forum
87. Differences between electronic universal testing machines and hydraulic universal testing machines - HCBBS Forum
88. How are the PID parameters of a control valve determined? - HCBBS Forum
89. What should be done if the pressure tap of a orifice plate flow meter gets clogged very easily? - HCBBS Forum
90. Please discuss what the most scientific approach should be to undergraduate students’ career planning in chemical engineering! Or what is the reasonable way to do it - HCBBS Forum
91. Valve on/off inspection - HCBBS Forum
92. For hydrocracking units, what are the follow-up actions required to address issues after emergency pressure relief is initiated due to interlocks? ? - HCBBS Forum
93. Can frequently using an F wrench to close a butterfly valve cause internal leakage? - HCBBS Forum
94. Seeking help with a process issue related to civil engineering - HCBBS Forum
95. Flanged valves, splices, cylinders, elbows - HCBBS Forum
96. What is the effect of injecting carbon disulfide and stopping its injection on the hydrogenation reaction system? - HCBBS Forum
97. Solving problems related to the description of pipeline material tables - HCBBS Forum
98. Are eyewash stations required in diesel and gasoline tank areas and loading platforms? - HCBBS Forum
99. 【Daily Question】Question from Issue 20150827 - HCBBS Forum
100. Are there any manufacturers of batch controllers who can provide a quote? - HCBBS Forum