English — Forum #723 (Page 469/642)

1. 【Weekly Topic】Determine any operational issues based on the test results of the purified water and make appropriate adjustments - HCBBS Forum
2. Environmental Protection Daily Quiz: October 26 – Participate for prizes; 3 correct answers earn an additional prize - HCBBS Forum
3. 【Daily Question】Chemical Engineering Principles 215: Distillation Columns (October 27) - HCBBS Forum
4. How to apply for a patent - HCBBS Forum
5. Proportion of domestic ion-exchange membrane cells - HCBBS Forum
6. Can coal-to-oil still hold up? --Coal-to-oil in the eyes of the media - HCBBS Forum
7. 【Daily Question】2015.11.05 Thickness (2 wealth points for a reply + 3–8 additional wealth points if the answer is correct) - HCBBS Forum
8. Sealing materials resistant to molten sodium metal - HCBBS Forum
9. Thermostatic bell-type steam trap - HCBBS Forum
10. Wastewater Knowledge - 10-26 (Answers +2, Correct Answers +4) - HCBBS Forum
11. Sign-in record post from November 5, 2015 - HCBBS Forum
12. For the parking air-cooled tower, water should be shut off first before gas is stopped - HCBBS Forum
13. Issues regarding the forced operation of the Honeywell SM system - HCBBS Forum
14. 【Daily Question】Question from Issue 20151104 - HCBBS Forum
15. I need help understanding what the model and specifications of a pump mean - HCBBS Forum
16. 【Daily Question】Question from Issue 20151030 - HCBBS Forum
17. Internal principle of the online density analyzer - HCBBS Forum
18. What are Lumper and Delumper used for in Hysys 8.4? - HCBBS Forum
19. How is sulfur dioxide formed? - HCBBS Forum
20. MTO cryogenic tank material - HCBBS Forum
21. How to calculate the net alcohol value based on the inlet and outlet temperatures of the methanol tower? - HCBBS Forum
22. A tons of mixed C4 + B tons of methanol = C tons of MTBE + D tons of ether, so what about C4? - HCBBS Forum
23. Learning about Siemens S7-300 help in understanding DCS and SIS? - HCBBS Forum
24. Does anyone have an emergency response plan for nitrogen? Please share it~! ! ! ! ! ! - HCBBS Forum
25. Zhongtuo Boye: Oil prices surged sharply due to the closure of Libyan ports - HCBBS Forum
26. Is the trend of impact on the characteristic curve of the pipeline the same when reducing the inlet or outlet valve of the water pump? - HCBBS Forum
27. What are the different forms of physicochemical flotation for chemical wastewater treatment? - HCBBS Forum
28. I’ve received an offer from the company. Please share your thoughts on this company; thank you - HCBBS Forum
29. I read a literature piece on gasification that used simulations based on Shenhua coal; but what kind of coal is Shenhua coal? Seek popular science knowledge - HCBBS Forum
30. What is the vaporization pressure of 0# diesel at 20 degrees Celsius? - HCBBS Forum
31. The nitrogen content in the crude benzene hydrogenation unit is above the specified limit - HCBBS Forum
32. What issues should be considered when installing a capacitive differential pressure transmitter? - HCBBS Forum
33. The impact of welding on small-diameter thin-walled nozzles - HCBBS Forum
34. Daily Question 2015.10.29 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
35. Must warehouses in Category A, Items 3/4, have a fire resistance rating of Class 1? - HCBBS Forum
36. How to debug and operate a biological aeration system - HCBBS Forum
37. I’m a beginner; please give me some guidance, experts - HCBBS Forum
38. Market discussions on diesel anti-wear agents - HCBBS Forum
39. Regarding the material of the pipe - HCBBS Forum
40. Confined space operation procedures - HCBBS Forum
41. 【Daily Question】November 2, 2015: Boiler true/false questions (2 wealth points for replying; +3–8 additional wealth points for correct answers) – Actual post - HCBBS Forum
42. What are the signs when the water content in the reforming system is too low? What are the hazards? How should it be addressed? - HCBBS Forum
43. Everyone, let’s work on question 33-2: multiple-choice questions 39-40 from the 2015 First-Class Constructor Examination in Engineering Economics; there will be a reward for correct answers - HCBBS Forum
44. 【Daily Question】11.1 Multiple-choice: What is the most praiseworthy aspect of a job? - HCBBS Forum
45. Is the fire hazard in the tank area determined based on the most hazardous tank? - HCBBS Forum
46. Go all out - HCBBS Forum
47. How to carry out anti-intermittent power supply modification for high-pressure slurry pumps using ABB 800 frequency converters - HCBBS Forum
48. Are there any large-scale coal chemical projects in Tangshan, or ones that are under construction or planned to be built? - HCBBS Forum
49. Does the air coming out of the blower in a catalytic CO incinerator need to be preheated? - HCBBS Forum
50. Professional design for petrochemical instrumentation - HCBBS Forum
51. Dear experts, please discuss the principle of rotary vane vacuum pumps, precautions, issues that may arise during operation, and repair methods - HCBBS Forum
52. Issues with regeneration and improvement in French IFP - HCBBS Forum
53. I have a few questions regarding heat exchanger design ? ? ? In a hurry? In a hurry? - HCBBS Forum
54. Tail oil - HCBBS Forum
55. PDS, please help! - HCBBS Forum
56. As long as the mood is cheerful, there are no rainy days in life. - HCBBS Forum
57. Is the only use of MTBE for blending gasoline? - HCBBS Forum
58. 【Daily Question】Question 28: Test question from issue 20151027 (Repeat +2)； For the other +3) - HCBBS Forum
59. I’ve received an offer from the company. Please share your thoughts on this company; thank you - HCBBS Forum
60. What are the precautions for storing and transporting cyclopentane? - HCBBS Forum
61. Does anyone have the book “Questions and Answers on Catalytic Reforming Unit Technology”? - HCBBS Forum
62. A rather basic question: regarding theoretical trays and actual trays - HCBBS Forum
63. LNG flare system - HCBBS Forum
64. Issues with the recovery of heavy hydrocarbons from crude oil stabilizers? - HCBBS Forum
65. Methanol to olefins - HCBBS Forum
66. Balance pipe between the outlets of the two adsorption cylinders in the nitrogen generator - HCBBS Forum
67. Analysis of the safety protection layer for pressure pipelines - HCBBS Forum
68. Chinese Welding - HCBBS Forum
69. Issues related to the incineration of hazardous waste - HCBBS Forum
70. What are the requirements for water quality in industrial cooling water? - HCBBS Forum
71. Methanol waste gas - HCBBS Forum
72. 【Daily Question】Question for Issue 20151029 - HCBBS Forum
73. What do sewage and rainwater have in common? - HCBBS Forum
74. I wish I had thousands of small beds, to shelter all those who suffer from working night shifts and staying up late! - HCBBS Forum
75. Wastewater Knowledge-10-25 (Answer +2, Correct Answer +4) - HCBBS Forum
76. How to design SIS fail-safe interlocks? - HCBBS Forum
77. Waste alkali solution treatment technologies and equipment - HCBBS Forum
78. How to modify content in a PDF editor - HCBBS Forum
79. How to place channel steel for optimal load-bearing performance - HCBBS Forum
80. What does Moer traffic mean and how is it calculated? - HCBBS Forum
81. 【Daily Question】October 30, 2015: Design temperature of titanium alloys (2 wealth points for a reply + 3–8 additional wealth points for a correct answer) - HCBBS Forum
82. I would like to ask everyone how to learn DCS? - HCBBS Forum
83. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 349 - HCBBS Forum
84. How to remove off-flavors from finished products - HCBBS Forum
85. What are the carriers of a corporate security culture? - HCBBS Forum
86. Vacuum tower operation - HCBBS Forum
87. Pipeline insulation and anti-corrosion: polyethylene foam plastic + UPVC pipe - HCBBS Forum
88. A question: What are the requirements for naphtha as a raw material in ethylene production plants? - HCBBS Forum
89. Length of the strengthened section at the large and small ends of the conical shell - HCBBS Forum
90. 【Daily Question】Question from Issue 20151102 - HCBBS Forum
91. Question 78 on Boiler Foundations, November 1: (A certain score will be given to the top 40) - HCBBS Forum
92. How should the density of hydrophobic silicate composite panels be chosen? - HCBBS Forum
93. Molecular structure input method - HCBBS Forum
94. 【Daily Question】10.30 Multiple-choice question: The temperature control of the desulfurized gas is generally more critical than that of the lean solvent - HCBBS Forum
95. 【Petrochemical Activities】My “most” crazy – the most extreme heartfelt words 03+percy - HCBBS Forum
96. Hydrogen extraction from coke oven gas - HCBBS Forum
97. PDH propane catalytic dehydrogenation - HCBBS Forum
98. Is there anyone who can provide a process package for the production of potassium sulfate using the negative decomposition method of 5W tons of ammonium sulfate? - HCBBS Forum
99. How can the fecal solids in bubble feces wastewater be removed? How should a collection pool be designed to prevent silt accumulation? - HCBBS Forum
100. Those who are familiar with the Ac800F system: after the controller loses power and is restarted, the trend data on the operation station is lost. Seeking help - HCBBS Forum