English — Forum #723 (Page 432/642)

1. When are drain and vent operations generally carried out? - HCBBS Forum
2. What are the allowable requirements for pipelines after tower-type equipment is aligned and in place? - HCBBS Forum
3. 【Daily Question】Question from Issue 20151202 - HCBBS Forum
4. Calculate the resistance value - HCBBS Forum
5. How are relay systems compared to PLC systems? - HCBBS Forum
6. Air-based gas generation and pure oxygen-based gas generation - HCBBS Forum
7. Strange behavior of diaphragm pressure gauges – seeking expert help - HCBBS Forum
8. Under what conditions should operations be carried out when the level gauge fails? - HCBBS Forum
9. Issues regarding the insulation and support of large pipelines - HCBBS Forum
10. Mechanical float level controller - HCBBS Forum
11. What are the hazards of ammonia in acidic gases? What is the combustion temperature? - HCBBS Forum
12. Can a steam extractor for the Hangqi 6MW unit be used without a drain valve? - HCBBS Forum
13. A letter from a senior executive father to his son who is determined to study chemistry - HCBBS Forum
14. 【Daily Question】12.4 True or False: Issues with gear oil (2 points for a reply + additional 3–8 points if the answer is correct) - HCBBS Forum
15. 【Daily Question】 December 11 True or False Question - HCBBS Forum
16. Key points of ammonia synthesis management - HCBBS Forum
17. Process calculation - HCBBS Forum
18. Can coal-based C5 and catalytic C5 be blended? 、 - HCBBS Forum
19. Discussion on Collecting and Addressing Technical Challenges in the Petrochemical Industry - HCBBS Forum
20. **What kind of organization is the CAAC? - HCBBS Forum
21. Is a forged flange the same as a butt-welded flange? Just starting out in this field, I’d like to ask for some advice - HCBBS Forum
22. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-11-30) — Points are awarded for participation - HCBBS Forum
23. Are there any good solutions for poor sealing of the inlet and outlet valves of the black water circulation pump? - HCBBS Forum
24. Is the hydrogenation reaction an exothermic reaction? Why? - HCBBS Forum
25. In the piping system, I see: 316L EP+Heater Line+Warm Cover. What does this mean? - HCBBS Forum
26. Briefly describe the impact of the tower bottom liquid level on distillation operations? - HCBBS Forum
27. 【Daily Question】 December 10th True or False Question - HCBBS Forum
28. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151128 issue - HCBBS Forum
29. 【Daily Question】11.30 Fill-in-the-blank question: Correct answer = +10 wealth points - HCBBS Forum
30. Has anyone used MCM-22 for the alkylation of long-chain olefins? - HCBBS Forum
31. Find a part-time job - HCBBS Forum
32. The solubility of hydrogen in liquid ammonia - HCBBS Forum
33. Pressure swing adsorption time - HCBBS Forum
34. Some thoughts - HCBBS Forum
35. Hydraulic testing plan for the boiler construction plan - HCBBS Forum
36. What are the factors that affect the passivation of SCR catalysts? - HCBBS Forum
37. The environmental risks inherent in the surging graphene boom – pollution during the manufacturing process - HCBBS Forum
38. What are the reasons that can cause a sudden drop in the level of the hot well fluid in a steam turbine? - HCBBS Forum
39. Determination of organochlorines - HCBBS Forum
40. How should this sentence be translated to sound smooth? For the representation in this document ... - HCBBS Forum
41. Diagram of zero-position tank in steel-concrete structure - HCBBS Forum
42. What are the career options for those who specialize in chemical engineering design but not piping work? - HCBBS Forum
43. Help: Salt formation occurs in the tank during alkaline/wet desulfurization and sulfur melting. I hope those from Sichuan can help suggest ways to deal with this issue ? - HCBBS Forum
44. Which section of the turbine is referred to as the adjustment section? - HCBBS Forum
45. Transform discussion - HCBBS Forum
46. 【Daily Question No. 67】December 02, 2015: +2 wealth for participation, plus another +3~8 wealth for correct answers - HCBBS Forum
47. Seeking help from the great deity - HCBBS Forum
48. Catalytic start-up - HCBBS Forum
49. 【Life District】November 2015 Thread on Moderator Salary Payments - HCBBS Forum
50. 【Daily Question】November 25, 2015 – Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
51. What kind of flow meter is an MI flow transmitter? - HCBBS Forum
52. The impact of liquid alkali concentration on water treatment - HCBBS Forum
53. Stirring type - HCBBS Forum
54. Does such a gauge require explosion protection? - HCBBS Forum
55. Seeking advice on outdoor dashboards - HCBBS Forum
56. What are some chemical synthesis processes that generate waste sodium hydroxide? - HCBBS Forum
57. Is the chlorination reactor for anhydrous aluminum trichloride almost open-style, representing an outdated production process? - HCBBS Forum
58. In winter, the material inside the exhaust gas spray absorption tower freezes - HCBBS Forum
59. Experts, I would like to ask about the issue of crude methanol - HCBBS Forum
60. Nine key points to keep in mind when maintaining instruments and meters - HCBBS Forum
61. 【Daily Question】12.5 Galvanic Cells and Electrolytic Cells (2 wealth points for a reply + additional 3–8 wealth points for a correct answer) - HCBBS Forum
62. 【Petrochemical Activities】My “most” crazy and “most durable” valve 22+jacques0920 - HCBBS Forum
63. What are the advantages and disadvantages of filling the heat exchanger tubes in the methanol tower with twisted iron? - HCBBS Forum
64. How to draw double-line pipes in piping diagrams? - HCBBS Forum
65. Safety Operating Procedures for Cranes and Hoists - HCBBS Forum
66. Regarding the hydrostatic pressure of liquid columns - HCBBS Forum
67. Help: Animation demonstration of air separation process - HCBBS Forum
68. How to explain these experimental results - HCBBS Forum
69. Flange leakage issue in the xylene system of the reformation unit - HCBBS Forum
70. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 229 - HCBBS Forum
71. Methanol Weekly Topic How can methanol production reduce water consumption? 2015.11.30--12.06 - HCBBS Forum
72. Team management system - HCBBS Forum
73. Summary of the latest various valve animation resource posts - HCBBS Forum
74. I have two questions regarding architecture - HCBBS Forum
75. PKSC300 valve control issues - HCBBS Forum
76. Regarding the issue of design temperature - HCBBS Forum
77. What are the differences in the manufacturing of the fireproofing layer and insulation layer for the skirt of a tower-type container? - HCBBS Forum
78. Copper sheet corrosion in hydrocracked aviation fuel - HCBBS Forum
79. (Basic knowledge) What are the hydrodynamic characteristics of circulating fluidized bed boilers? - HCBBS Forum
80. Who has written a specialized paper on the design of safety facilities for gas tanks? - HCBBS Forum
81. Can the Warriors’ winning streak continue to 40 wins? - HCBBS Forum
82. 【Production and Management Division】Special Post on Wage and Bonus Payments in November 2015 - HCBBS Forum
83. For chemical enterprises that wish to obtain a safety officer certificate, how do they apply for it? - HCBBS Forum
84. The Internet will achieve seamless integration with the Internet of Things - HCBBS Forum
85. Jiangsu shuts down 7,000 heavily polluting chemical enterprises - HCBBS Forum
86. What are the commonly used blackening agents? - HCBBS Forum
87. How much does a senior environmental protection part-time job pay? - HCBBS Forum
88. What is the difference between a 404 error and a 502 error when trying to log in to a website? - HCBBS Forum
89. Regarding the temperature measurement of chemical processing units, when the temperature sensing element without a transmitter at the site becomes disconnected, the control systems (SIS and DCS) take action - HCBBS Forum
90. Can the double mechanical seal of a centrifugal pump be replaced with a single mechanical seal? What considerations should be taken into account when making changes? - HCBBS Forum
91. 【Picture of the Day】 December 1st – This should be available in every set of devices; see if you can recognize it - HCBBS Forum
92. Do you know any companies that are good at manufacturing diaphragm valves made of PFA? - HCBBS Forum
93. In which stages of the chlor-alkali chemical industry are external-mounted level gauges used? - HCBBS Forum
94. 【Daily Question】Chemical Engineering Principles 246: Right-Angled Trapezoids (November 27) - HCBBS Forum
95. Cyclododecanone exhaust gas treatment - HCBBS Forum
96. Centrifugal pump standards - HCBBS Forum
97. MTO water replenishment issue - HCBBS Forum
98. I have a few questions about valves - HCBBS Forum
99. Is the safety valve on the cooling water side of a shell-and-tube heat exchanger installed on the inlet water or the return water? Why? - HCBBS Forum
100. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151126 issue - HCBBS Forum