English — Forum #723 (Page 2/642)

1. 【Weekly Topic】【Engineering Version 20160406】 - HCBBS Forum
2. Is the selection of the sealing type for the control butterfly valve also based on temperature, just like in the case of ball valves? - HCBBS Forum
3. Daily Security Technology Quiz (2016.9.11) - HCBBS Forum
4. Properties of bromine - HCBBS Forum
5. How can the sludge settling ratio be increased quickly? - HCBBS Forum
6. I have a question regarding normally open and normally closed contacts - HCBBS Forum
7. 【Registration Section】Technical Team Promotion Application for September 2015 - HCBBS Forum
8. Selection issues for steam traps with back pressure - HCBBS Forum
9. Why can’t Chinese people fall asleep by counting sheep when they suffer from insomnia? - HCBBS Forum
10. Intergranular corrosion of stainless steel - HCBBS Forum
11. Please provide a paragraph that needs to be translated smoothly. Thank you! - HCBBS Forum
12. Does high lubricant temperature cause carbon buildup? - HCBBS Forum
13. 【Daily Topic】【Civil Engineering Version 20160404】 - HCBBS Forum
14. Are there any fire-resistant armored instrument control cables available? - HCBBS Forum
15. Positioner input feedback - HCBBS Forum
16. It’s still the calculation of the heat exchange area - HCBBS Forum
17. Filter cloth issue - HCBBS Forum
18. Reflections on safety accidents caused by issues in operating procedures - HCBBS Forum
19. Should a section of heat tracing be added to the pipeline behind the safety valve of the liquefied gas desulfurization tower to prevent low temperatures from occurring during discharge? - HCBBS Forum
20. What does the alarm FCS0103 Temperaure (AIR IN) in the Yokogawa DCS mean? - HCBBS Forum
21. Issues regarding the selection of absolute pressure transmitters - HCBBS Forum
22. Decided! The professional title system will be reformed in this way - HCBBS Forum
23. A problem with the backflow valve - HCBBS Forum
24. How to calculate the pressure when a chlorine water seal is broken - HCBBS Forum
25. Pipeline pressure drop issue - HCBBS Forum
26. Why doesn’t the United States pursue large-scale **? - HCBBS Forum
27. Vaporization Daily Question: 2016-12-3 Quiz (5 points for participation, 10 points for a correct answer) - HCBBS Forum
28. Corrosion of carbon steel by isopropyl ether - HCBBS Forum
29. Understanding of the engineering specifications for float-type level gauges? - HCBBS Forum
30. What are some convenient and useful methods and tools for doing housework? - HCBBS Forum
31. Portable combustible gas detectors and manual analysis for determining whether welding can proceed safely - HCBBS Forum
32. Online replacement of ceramic balls in sand filter towers for maintenance - HCBBS Forum
33. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 365 - HCBBS Forum
34. What kind of noodles do you people eat there? - HCBBS Forum
35. Environmental Protection Daily Question (12.26) - HCBBS Forum
36. What does it indicate that the color of wastewater becomes lighter after flocculation and sedimentation treatment? - HCBBS Forum
37. Sewing and packing machine repair and maintenance - HCBBS Forum
38. 【Daily Question】Advanced Processing 20160526 Multiple Choice: The main process influencing factors in chemical engineering processes are ( ) - HCBBS Forum
39. What is an explosion-proof film? 【Video】 - HCBBS Forum
40. The equipment uses integral flanges; can the connection flanges be necked butt-welded flanges? - HCBBS Forum
41. Reflux ratio - HCBBS Forum
42. In what situations are floating roof tanks, spherical tanks, horizontal tanks, and vaulted roof tanks used respectively? - HCBBS Forum
43. Gas condensation issue? - HCBBS Forum
44. Hydrogenation cycle compressor inlet separator tank for catalytic reforming pretreatment - HCBBS Forum
45. I would like to ask whether carbon disulfide is considered a highly penetrating toxic substance, and whether it is necessary to use a high-neck flange Is strong permeability the key? - HCBBS Forum
46. Blue and Sad Mushrooms - HCBBS Forum
47. 【Daily Question】Question from Issue 20151116 - HCBBS Forum
48. Zhang Daqian’s Portrait of a Lady - HCBBS Forum
49. Select the types of construction safety management technical information you need to know about and obtain the most - HCBBS Forum
50. Does the resin flow out during the backwashing of mixed ion exchange resin? - HCBBS Forum
51. Rossmount 5402 radar level gauge error code fault - HCBBS Forum
52. Observe people - HCBBS Forum
53. Anti-dumping review of polysilicon: Tax rate for Korean companies may rise from 2.4% to 33.68% - HCBBS Forum
54. Liquid bromine transfer pump - HCBBS Forum
55. Is there a difference between metric pipes and imperial pipes? - HCBBS Forum
56. About spherical tanks - HCBBS Forum
57. Gentle experts, let’s discuss the application scope of failure probability databases - HCBBS Forum
58. Does the rotor of a rotameter rotate? - HCBBS Forum
59. Seeking suppliers of organic gas separation membranes - HCBBS Forum
60. Nine Safeguards and Nine Risks in Safe Production” - HCBBS Forum
61. Case analysis: Should the following situations be classified as work-related injuries? (1) - HCBBS Forum
62. 【11-29】Daily Occupational Health Quiz - HCBBS Forum
63. Is HG/T20559 still in use? - HCBBS Forum
64. 【Daily Topic】【Electrical Edition 20160620】 - HCBBS Forum
65. Are power cables allowed to have joints on the cable tray? - HCBBS Forum
66. Help: What does the pump model mean? - HCBBS Forum
67. Regarding the risks associated with installing the ITCC system offline - HCBBS Forum
68. 【Daily Topic】【Electrical Edition 20160828】 - HCBBS Forum
69. 【Daily Topic】【Storage & Transportation Version 20161102】 - HCBBS Forum
70. Delayed coking quench oil - HCBBS Forum
71. Who has a more authoritative steam density table? - HCBBS Forum
72. My May Day! - HCBBS Forum
73. What insights and experiences do you have regarding the placement of operation stations in various systems within the central control room of large-scale combined workshops? - HCBBS Forum
74. s7300 simulation software - HCBBS Forum
75. How important is dad? Just read this article and you’ll know! - HCBBS Forum
76. The oil turned black after being distilled in the tower. What’s the reason? How to break it? - HCBBS Forum
77. Help! Why does the dual-flange level gauge transmitter from Rosemount show “FAIL MODULE”? - HCBBS Forum
78. Pre-treatment with 6-12% sodium chloride or sodium sulfate! ! ! ! ! - HCBBS Forum
79. Expansion bonded copper-aluminum finned tube - HCBBS Forum
80. The future of polyester fibers - HCBBS Forum
81. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 286 - HCBBS Forum
82. Please help, expert! - HCBBS Forum
83. What is the reason for MTBE being present in the overhead stream of the catalytic distillation tower? - HCBBS Forum
84. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 243 - HCBBS Forum
85. Condensate recovery related - HCBBS Forum
86. How should one view the situation of having enjoyed a beautiful view but not having any photos as a reminder?” - HCBBS Forum
87. “I’m saving energy; where are you? “Petrochemical 305: Reducing the use of fresh water throughout the plant” - HCBBS Forum
88. Experts, are there any special features regarding high-pressure water phosphorus removal valves? - HCBBS Forum
89. Heat exchange temperature calculation - HCBBS Forum
90. Ceramic membrane filter - HCBBS Forum
91. Gasification Daily Question: 2016-11-19 Fill-in-the-blank question (5 points for participation, 10 points for a correct answer) - HCBBS Forum
92. Alkylation consumes a large amount of acid - HCBBS Forum
93. Is there anyone in need of other TRICON software? Send it to my email – I’ll make it available freely! - HCBBS Forum
94. Regarding hydrocracking interlocks - HCBBS Forum
95. Calculation of the explosion limit of mixed gases - HCBBS Forum
96. 【Haichuan Fun English】give it one’s best shot - HCBBS Forum
97. 2016 Q&A Summary Post - HCBBS Forum
98. Treatment of residual methanol on the trays after shutdown of low-temperature methanol washing - HCBBS Forum
99. 【Joint Study*】【Electrical Version 20160225】 - HCBBS Forum
100. Are printed materials allowed for the Shanghai registered chemical engineer exam? - HCBBS Forum