English — Forum #723 (Page 438/642)

1. What is the name of the component that prevents water from entering aZA-type centrifugal pump? - HCBBS Forum
2. What type of packing is used for valves that can handle temperatures of 400 degrees? - HCBBS Forum
3. Sign-in record post dated December 4, 2015 - HCBBS Forum
4. 【Daily Question No. 39】December 03, 2015: +2 wealth for participation, +3 additional wealth for correct answers - HCBBS Forum
5. How to calibrate pressure transmitters and pressure gauges? - HCBBS Forum
6. Write the basic practical flow equation for a throttling device, and explain the meaning of each quantity in the equation - HCBBS Forum
7. May I ask about the valve issue in the flowchart? - HCBBS Forum
8. Problems with channel steel for pipe supports? - HCBBS Forum
9. Siemens CP5612 drive - HCBBS Forum
10. Regarding Rosemount vortex flowmeters - HCBBS Forum
11. What explosion-proof measures should be in place for methanol production? - HCBBS Forum
12. Hollyland DCS - HCBBS Forum
13. Watch and analyze the questions - HCBBS Forum
14. Title confirmed - HCBBS Forum
15. Schneider frequency converter ATV61 - HCBBS Forum
16. Life is like tea; the first taste is bitter, just like life itself - HCBBS Forum
17. Weekly Topic December 3, 2015 - HCBBS Forum
18. MDEA heat pump desorption unit - HCBBS Forum
19. How is the propane dehydrogenation to propylene industry? - HCBBS Forum
20. What water should be drunk as the first drink in the morning? - HCBBS Forum
21. Professional English for Titles - HCBBS Forum
22. I would like to ask what textbook is used for the training and examination on pressure vessel design review certification organized by the Rongbiao Committee this year? - HCBBS Forum
23. I need information on methanol production capacity for 2015; the more detailed, the better. I don’t want data on capacity by province – it would be better if the information is provided on a per-manufacturer basis - HCBBS Forum
24. 【Daily Question】Chemical Engineering Principles 249: Grasshoff’s Number (November 30) - HCBBS Forum
25. Relationship between coal gasification black water discharge and hardness - HCBBS Forum
26. How should equipment professionals in the equipment department of the construction unit review the process packages provided by third parties? - HCBBS Forum
27. What is the difference between lock open (closed) LO(LC), seal open (closed) CSO(CSC), and normal open (closed) NO(NC)? How to choose in practice? - HCBBS Forum
28. Briefly describe the emergency shutdown steps for double-column distillation? - HCBBS Forum
29. Regarding the creation of a section for sharing cases of safety and environmental incidents - HCBBS Forum
30. What procedures are required for design changes during project construction? - HCBBS Forum
31. Avoiding the Misconceptions of Lean Production - HCBBS Forum
32. 20151128 One question per day - HCBBS Forum
33. Does floating roof storage refer to internal floating roof tanks or external floating roof tanks? - HCBBS Forum
34. For the sulfuric acid of PH2, when heated to 50-60°C, what material should be used for the heating tube? - HCBBS Forum
35. Who has teaching videos on reciprocating compressors? - HCBBS Forum
36. What to do if the water in the biochemical tank of a printing and dyeing factory turns red? What causes it - HCBBS Forum
37. Regarding winter anti-freezing measures - HCBBS Forum
38. November 26, Boiler Foundation Question 101: (A certain score will be given to the top 50) - HCBBS Forum
39. What issues should be considered during the operation of an SCR system? - HCBBS Forum
40. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-11-26) — Points are awarded for participation - HCBBS Forum
41. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 380 - HCBBS Forum
42. The reaction equation for adding HCl and Ki to chromium-containing wastewater, followed by the addition of CCl4 - HCBBS Forum
43. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 378 - HCBBS Forum
44. What is the economic scale in 10,000 tons for the indirect liquefaction coal-to-oil project? - HCBBS Forum
45. How to use the dulicate command in CII? - HCBBS Forum
46. Hello everyone, let’s discuss some ideas on enterprise (chemical) safety management - HCBBS Forum
47. How to measure the mist entrainment amount above the tray - HCBBS Forum
48. 【Daily Question】Question from Issue 20151203 - HCBBS Forum
49. Apple Affection (I) - HCBBS Forum
50. My medical exam report after leaving the job is ready; what could be the reason for the low white blood cell count? - HCBBS Forum
51. Problems with the pressure gauge process connection - HCBBS Forum
52. Quality inspection for the installation of buried pipelines - HCBBS Forum
53. Plant equipment inspection system - HCBBS Forum
54. One question per day (1201) - HCBBS Forum
55. Kobe is retiring, and this time it’s for real - HCBBS Forum
56. Coke oven heating level height? How to understand it - HCBBS Forum
57. 【Daily Question】November 28, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
58. I have a few questions regarding ammonium chloride granulation for fellow sailors - HCBBS Forum
59. Interesting local dialects: Time flies by - HCBBS Forum
60. Problems with the valve of a natural gas compressor? - HCBBS Forum
61. Issues with receiving pumps upon arrival at the warehouse - HCBBS Forum
62. I didn’t receive the certificate after taking the basic exam - HCBBS Forum
63. No cost at all — Heat exchange balance calculation software — Using a sledgehammer to crack a nut - HCBBS Forum
64. Acids and Bases - HCBBS Forum
65. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 379 - HCBBS Forum
66. Reward-based assistance: Who has any documents regarding management procedures for external construction teams - HCBBS Forum
67. What does “made available” mean? - HCBBS Forum
68. How do the components of the gas produced vary with different alcohol-to-ammonia ratios? - HCBBS Forum
69. Who has the video course materials for the 2016 Level 2 construction exam? Please share them, thanks! - HCBBS Forum
70. Payment of moderator salaries in the coal chemical industry zone, November 2015 version - HCBBS Forum
71. What tasks should be carried out on the level gauge before it is put into operation after a major overhaul? - HCBBS Forum
72. What questions will the HR department ask regarding the assessment of shift workers in the workshop? - HCBBS Forum
73. The relationship between chloride ion concentration, COD, and potassium dichromate concentration - HCBBS Forum
74. 【Caustic Soda Plant】What process is SALT HEATING? - HCBBS Forum
75. Antioxidation issues in the lubricating oil station tank - HCBBS Forum
76. What should be the pressure control for the instrument purge air in petrochemical plants? - HCBBS Forum
77. How could the process package be made such a poor quality? - HCBBS Forum
78. [Technical Post] Summary of weekly topics for the PVC forum in 2015 – moderators are requested to add updates promptly! - HCBBS Forum
79. One question per day (1125) - HCBBS Forum
80. I’m a bit in a hurry; please help me, experts! ! ! ! - HCBBS Forum
81. In catalytic cracking, can the 10% ethylene contained in the dry gas not be recovered? - HCBBS Forum
82. 【Daily Question】True or False: In a device, ball valves and gate valves rotate clockwise to open, and rotate counterclockwise to... - HCBBS Forum
83. What safety accessories or measures should be installed in the chemical dosing room? - HCBBS Forum
84. How to separate carbon dioxide and hydrogen sulfide - HCBBS Forum
85. Suction head of centrifugal pump - HCBBS Forum
86. Addition: [Daily Question] December 6 – Among the options given, which one is a level gauge that measures liquid levels based on the principle of variable buoyancy? ? ? - HCBBS Forum
87. What are the main types of circulating fluidized bed desulfurization equipment? - HCBBS Forum
88. Pneumatic control valves are installed on the low-temperature liquid pipelines outside the air separation cryogenic tank~~ - HCBBS Forum
89. What is constant-pressure blasting purging? - HCBBS Forum
90. Valve structure - HCBBS Forum
91. One question per day (1128) - HCBBS Forum
92. Once the wastewater from the carbonization section drops to over 3,000, how can it be treated to reduce the COD to a few hundred as quickly as possible? - HCBBS Forum
93. Do large-diameter fiberglass reinforced plastic pipes require structural support? - HCBBS Forum
94. What causes fluctuations in the taphole pressure difference, or even negative values? - HCBBS Forum
95. One question per day (1126) - HCBBS Forum
96. What to do if the top of an acidic water tank cracks - HCBBS Forum
97. How to learn interlock logic diagrams well - HCBBS Forum
98. 【Daily Question】Question from the 20151126 issue - HCBBS Forum
99. When can the free water in ASPEN be used? - HCBBS Forum
100. Cathodic protection for biogas to natural gas purification equipment - HCBBS Forum