English — Forum #723 (Page 420/642)

1. CWES-EST Circulating Water Electrolytic Treatment and Environmental Protection - HCBBS Forum
2. 【Chemical Engineering Theory】Gasoline blending problem - HCBBS Forum
3. How to handle the displacement of pipes on the pipe tray? The pipes are over 100 meters long, have a DN500 diameter, and are insulated - HCBBS Forum
4. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 234 - HCBBS Forum
5. What are the hazards of excessive sharp corners on pressure vessels? - HCBBS Forum
6. May I ask where the installation locations of the inlet valves on the pumps that everyone is using are? - HCBBS Forum
7. Is it difficult to produce SG-10 type PVC resin? - HCBBS Forum
8. Professional examination for registered chemical engineers in the Su region. . A qualified design institute will issue the stamp, as well as the social insurance agency - HCBBS Forum
9. I have a question regarding the basic exam - HCBBS Forum
10. 【Daily Question】Reissued on 12.14 Multiple-choice question: The stability of gasoline refers to ( ) [ - HCBBS Forum
11. 【Daily Question】Chemical Engineering Principles 264: Heat Exchangers (December 15) - HCBBS Forum
12. If there are high-voltage switchgear, is an MCC cabinet still needed? - HCBBS Forum
13. Professional title evaluation in Shandong Province - HCBBS Forum
14. Reaction decarboxylation - HCBBS Forum
15. Monitoring points for corrosion monitoring - HCBBS Forum
16. Which expert can help me figure out the plan for replacing the primary and secondary tooth plates in the HL4PG .4/5 series crushers, as well as the time required for this task? - HCBBS Forum
17. 20151212 One question per day - HCBBS Forum
18. Common defects in pressure vessels - HCBBS Forum
19. December 15th: True/False question No. 120 on boiler foundations: (A certain score will be given to the top 50 participants) - HCBBS Forum
20. Questions regarding the SIS classification level for oil and gas pipelines - HCBBS Forum
21. It’s terrible that newcomers have to pay to download! ! ! - HCBBS Forum
22. PSM, HAZOP, SIL, LOTO, QRA, BBS｜How much do you know about these key safety techniques? - HCBBS Forum
23. 【Daily Question】December 8, 2015: Welded joints of pressure vessels (Top 50 participants + 2 rewards) - HCBBS Forum
24. What is the difference between standard flanges for valves in the chemical industry and mechanical flanges? - HCBBS Forum
25. Patent document search - HCBBS Forum
26. What causes the temperature to drop significantly after gasoline is mixed with feed oil and hydrogen? - HCBBS Forum
27. Catalytic charring ratio - HCBBS Forum
28. Is it okay to have a weld skirt after a hydrostatic test? - HCBBS Forum
29. **Safety issues in furan distillation - HCBBS Forum
30. One question per day - HCBBS Forum
31. Management tasks for the top 10 recommendations phase - HCBBS Forum
32. Quality standards for monocrystalline silicon - HCBBS Forum
33. Allowable stress for one-time + secondary use - HCBBS Forum
34. Civil Engineering Structure Discussion Area ----【Daily Question】Question from the 20151209 issue - HCBBS Forum
35. Requirements for installation and acceptance specifications of moving equipment - HCBBS Forum
36. For elastic pin couplings, how is the number of nylon pins determined? - HCBBS Forum
37. December 16: True/False question No. 121 on boiler foundations: (A certain score will be given to the top 50) - HCBBS Forum
38. Selection of the switching valve - HCBBS Forum
39. What would it be like if Dow and DuPont merged? - HCBBS Forum
40. December 13th: True or False question No. 118 on boiler foundations: (A certain score will be given to the top 50 participants) - HCBBS Forum
41. Pump for storage tanks - HCBBS Forum
42. Small environmental actions - HCBBS Forum
43. Pump for the neutralization tank - HCBBS Forum
44. Coking value and fixed carbon of coal tar pitch - HCBBS Forum
45. 【Daily Question】 December 17th: Where should the ignition rod be placed when starting up a heating furnace? ? ? - HCBBS Forum
46. Seeking help: What are the common causes of excessive bubbles in a cooling water system that uses RO water? - HCBBS Forum
47. I would like to ask how to perform intermittent distillation simulation - HCBBS Forum
48. Joint Learning*1211: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
49. Environmental protection in action - HCBBS Forum
50. There is no output issue with the vortex flow meter - HCBBS Forum
51. How to prevent the water layer on top from freezing in winter with carbon disulfide - HCBBS Forum
52. 【Basic Knowledge 7】The n/8 Law for Single Alloys (Prize Quiz) - HCBBS Forum
53. Can a triple-effect evaporator use heat transfer oil as a heat source? - HCBBS Forum
54. Methods for extracting phenols from mixed trihydrocarbons and naphtha oil - HCBBS Forum
55. Books on pump maintenance and compressor maintenance - HCBBS Forum
56. 【Basic Knowledge 6】What does the grade of lubricating oil mean? (Puzzle with prizes) - HCBBS Forum
57. How does the Zhejiang Zhongkong DCSJX300XP enable the output of a variable at regular intervals corresponding to the computer’s time? - HCBBS Forum
58. What standard heat exchange tubes are used for the Grade 1 tubes in the new 151 tube bundle? - HCBBS Forum
59. The compressor piston rod and part of the pressure element have broken free from the crosshead - HCBBS Forum
60. A question about distillation simulation - HCBBS Forum
61. One more photo of corrosion - HCBBS Forum
62. When it comes to methods for learning spoken English, only targeted approaches are effective - HCBBS Forum
63. 【Daily Question No. 74】December 11, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
64. Issues related to surfacing of pressure vessels and use of composite plates - HCBBS Forum
65. 【Daily Question】Question from Issue 20151215 - HCBBS Forum
66. To prioritize safe production, one must be prepared for potential risks even in times of stability - HCBBS Forum
67. 【Daily Question】Chemical Engineering Principles 261: Drying Rate (December 12) - HCBBS Forum
68. Storage tank level - HCBBS Forum
69. DCS and instruments - HCBBS Forum
70. How to conduct quality and progress inspections for prefabricated steel structures? - HCBBS Forum
71. Design issues for a chimney with a diameter of 3m and a height of 90m – urgent! - HCBBS Forum
72. Consultations on selection issues related to ultrasonic flowmeters. - HCBBS Forum
73. The pressure drop of a heat exchanger represents the energy loss of the fluid as it passes through the heat exchanger. - HCBBS Forum
74. What functions should a power monitoring backend have? - HCBBS Forum
75. Some issues with ammonia, methanol, and coal-based ethylene glycol production - HCBBS Forum
76. Lubricant foaming - HCBBS Forum
77. On the pressure reduction principle of self-acting pressure relief valves - HCBBS Forum
78. What is the purpose of using steam when starting an air compressor? - HCBBS Forum
79. Joint Learning*1210: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
80. Filtering area of the basket filter - HCBBS Forum
81. The \"30,000 tons/year industrial complete set of technology for rare earth isoprene rubber\" has passed the appraisal by Sinopec - HCBBS Forum
82. Why is it advisable to avoid placing the pump outlet pipeline directly above the pump inlet pipeline? - HCBBS Forum
83. 【Daily Question】True or False: Common defects in pressure vessels are corrosion, cracks, and deformation - HCBBS Forum
84. Equipment material selection issue (low-temperature carbon steel + duplex steel) - HCBBS Forum
85. 【Daily Question】2015.12.11 Stress concentration in welded joints (2 wealth points for a reply; +3–8 wealth points if the answer is correct) - HCBBS Forum
86. Seek information on some catalytic cracking units - HCBBS Forum
87. Looking for a software for unfolding chemical equipment sheets~ - HCBBS Forum
88. How to make the personalized signature font larger? - HCBBS Forum
89. Weak demand will exacerbate the global LNG supply surplus next year - HCBBS Forum
90. I would like to ask about the model and manufacturer of the corrosion inhibitor used in refining Mari oil - HCBBS Forum
91. 【Daily Question】Question from Issue 20151207 - HCBBS Forum
92. Can the relevant provisions of the petrochemical regulations be ignored by using building codes? - HCBBS Forum
93. Weekly topic: Discuss adding water during the reaction in the polymerization reactor; a reward of 15~~30 wealth points will be given - HCBBS Forum
94. How to ensure the loose-air effect in the silo? - HCBBS Forum
95. Everyone, work on these questions; those who get them right will receive a reward. 109 out of 2015 – Multiple-choice questions on Project Management for the 2015 First-Class Constructor Exam, question 95 - HCBBS Forum
96. Combustion furnace, acidic gas distribution~ - HCBBS Forum
97. 【Basic Knowledge 16】Characteristics of pitting and corrosion pits (prize quiz) - HCBBS Forum
98. Vacuum distillation tower - HCBBS Forum
99. How to effectively remove methanol from water, with a concentration of about 1% - HCBBS Forum
100. One question per day (1206) - HCBBS Forum