English — Forum #723 (Page 539/642)

1. 【Safety and Environmental Protection Section】August Active Members Rewards – Winners please reply to claim their rewards - HCBBS Forum
2. How to determine if a liquid chlorine liquefier is leaking, and how to identify which one is leaking if there is a leak. - HCBBS Forum
3. What is the function of the gearbox between the drive turbine (power generation turbine) and the compressor (generator)? - HCBBS Forum
4. If you eat grapes without spitting out the skins, what about the seeds? - HCBBS Forum
5. Share your salary? - HCBBS Forum
6. A+ system property database retrieval method - HCBBS Forum
7. Should posts about various training sessions be deleted? - HCBBS Forum
8. Machining Center-1 - HCBBS Forum
9. Continue to soak in the jar - HCBBS Forum
10. 【Daily Question】Chemical Engineering Principles 160: Thermal Conductivity Coefficient (September 2) - HCBBS Forum
11. During the assembly of a centrifugal pump, which parts have an interference fit and which have a clearance fit? - HCBBS Forum
12. The more repairs are made to the defects in the welds of 310 pipes, the more cracks appear - HCBBS Forum
13. Questions regarding the defense for intermediate engineer in electrical automation at Jin - HCBBS Forum
14. In hydrogenation units, if the compressor stops operating suddenly, why is it necessary to stop feeding material as well? - HCBBS Forum
15. Which is the best automatic sampler for refined oil tanks? - HCBBS Forum
16. In tower design, when calculating the tower diameter, how is the gas velocity in an empty tower determined? Is the gas velocity in an empty tower related to the type of material? - HCBBS Forum
17. Regarding the voltage equalization issue? - HCBBS Forum
18. Thoughts on skipping grades - HCBBS Forum
19. Given the current economic situation, is changing jobs really a good idea? Especially in the petroleum refining and chemical industry! - HCBBS Forum
20. Chemical Engineering in Daily Life – Question 65: After being stung by bees, mosquitoes, or ants, should acid water or alkaline water be used to relieve itching? - HCBBS Forum
21. Thickness of petrochemical storage tanks - HCBBS Forum
22. 【Daily Question No. 11】September 10, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
23. Must an activated carbon filter be backwashed before use? - HCBBS Forum
24. Entropy and enthalpy - HCBBS Forum
25. Introduce the techniques for replacing crane tracks - HCBBS Forum
26. What are good ways to cool down an air cooler in summer? - HCBBS Forum
27. Baijiu blended with edible alcohol - HCBBS Forum
28. 【College Activities】008+Some Stories from My College Years+Traces in the Sky - HCBBS Forum
29. Problems with chain-driven self-priming pumps - HCBBS Forum
30. Analysis of the causes of centrifugal pump failures and recommendations for pen-type vibration meters? - HCBBS Forum
31. What are the consequences of improper installation of the rocker arm limit for the coal lock lower valve in pulverized coal pressurized gasification? - HCBBS Forum
32. I need to build 2 high-flow shielding pumps - HCBBS Forum
33. Request the daily maintenance procedures for space furnaces and hot air furnaces - HCBBS Forum
34. Property analysis of sulfur-depleted amine solution - HCBBS Forum
35. Are reciprocating compressors with a capacity of over 3 m3 still suitable for economic production today? - HCBBS Forum
36. 【Daily Question】Question from Issue 20150907 - HCBBS Forum
37. The direct feed filter for diesel hydrocracking is flushed frequently - HCBBS Forum
38. Portable combustible gas detector - HCBBS Forum
39. The float of the servo level gauge keeps rising to 18 meters on its own and does not come back down - HCBBS Forum
40. Mass flow meter brands - HCBBS Forum
41. Design and selection of instruments for crude phenol purification - HCBBS Forum
42. In a dry desulfurization tower using activated carbon as a desulfurizing agent, does the temperature of the gas change after it passes through? - HCBBS Forum
43. Teacher’s Day is approaching – will you give a gift? - HCBBS Forum
44. Chemical Engineering in Daily Life – Question 64: What are the main components of honey? Why is it like this? Why doesn’t honey spoil easily? - HCBBS Forum
45. Recruiting engineers for conductive silver paste - HCBBS Forum
46. Load ratio of the air preheater in a tubular heating furnace - HCBBS Forum
47. Natural gas liquefaction process - HCBBS Forum
48. Where can I find the safety flow rate data for natural gas and liquefied petroleum gas in hydrogenation and hydrogen production facilities? - HCBBS Forum
49. Issues with the review of professional exams - HCBBS Forum
50. Chemical Engineering in Daily Life – Question 62: What kind of wine did Wu Song drink at Jingyang Ridge? - HCBBS Forum
51. What causes the finished acid to turn red? - HCBBS Forum
52. Tetrachloroethylene analysis - HCBBS Forum
53. 【Daily Question】2015.09.08 Storage of liquefied gases (2 wealth points for a reply; +3–8 additional wealth points if the answer is correct) - HCBBS Forum
54. 20150909 - HCBBS Forum
55. Issues with the bearings at the bottom of the thin-film evaporator - HCBBS Forum
56. What is a closed-loop cooling water system? What kind of devices are these systems generally used for? - HCBBS Forum
57. The compressor oil station needs to be tested in the manufacturer’s facility – how should it be inspected? Guidance from experts appreciated - HCBBS Forum
58. What materials should be used for the filtration and purification of sulfur trioxide gas? - HCBBS Forum
59. The saltwater inlet pipe of the electrolyzer is turning red; what could be the cause? - HCBBS Forum
60. Alipay has stopped the SMS verification service - HCBBS Forum
61. Why does the Sinopec catalytic anti-coking specification call for reducing the steam seal switching time and the time required for adding large quantities of additives? - HCBBS Forum
62. Can 316L cast steel be used in GC2 pressure pipelines? - HCBBS Forum
63. Powdery monoammonium clumps - HCBBS Forum
64. How to calculate the size of the tank for a diesel fire pump - HCBBS Forum
65. Selection of flow meters for vacuum material transfer pipelines - HCBBS Forum
66. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 302 - HCBBS Forum
67. 【Daily Question No. 6】September 05, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
68. A few questions about the process - HCBBS Forum
69. What polishing thickness is required to achieve a roughness of less than or equal to 0.73 - HCBBS Forum
70. Seeking information on control - HCBBS Forum
71. Principles of steam system control - HCBBS Forum
72. Compressor problems in ASPEN simulations of refrigeration cycles. . - HCBBS Forum
73. Copper sheet corrosion issue - HCBBS Forum
74. Our plant’s treatment process involves two stages of AO treatment followed by sedimentation. Currently, the COD level of the incoming water is between 400 and 500, while the ammonia nitrogen level is between 200 and 300 - HCBBS Forum
75. Airtightness test of vacuum system - HCBBS Forum
76. Stabilizer tower - HCBBS Forum
77. Should pipe supports be made of stainless steel tubes, and must pipe supports indeed be constructed from stainless steel material? - HCBBS Forum
78. Points redemption based on daily online time- - HCBBS Forum
79. Which is better, the natural gas industry or the oil storage industry? - HCBBS Forum
80. What impact will the reformation of reduced hydrogen carrying hydrocarbons have? - HCBBS Forum
81. Purification dilute acid pump - HCBBS Forum
82. Problems with the setup of the pressure relief pipeline for the lock chamber - HCBBS Forum
83. Consultation on centrifugal pump cooling water - HCBBS Forum
84. Discussion on the selection of alkylation process technologies - HCBBS Forum
85. Sulfatide formation in alkylation units - HCBBS Forum
86. Control of electrically heated organic heat carrier systems - HCBBS Forum
87. Why do accidents occur more often at night and on holidays? - HCBBS Forum
88. Application for inspection of pressure pipelines - HCBBS Forum
89. Business issues regarding the registration of hazardous chemicals permits! - HCBBS Forum
90. The problem of acid color change caused by the acetic acid pump - HCBBS Forum
91. Do people think there is a market for domestic condition monitoring of mechanical equipment, with vibration as the key parameter? - HCBBS Forum
92. How to address scaling on the rotor of a circulating hydrogen compressor? - HCBBS Forum
93. Causes of internal corrosion in the furnace cooling wall tubes of gas boilers - HCBBS Forum
94. Can the internal components of control valves used in low-temperature operating conditions be treated with nitriding? - HCBBS Forum
95. Sign-in record post from September 6, 2015 - HCBBS Forum
96. Regarding the sudden drop in settlement ratio - HCBBS Forum
97. Rehydrator level alarm - HCBBS Forum
98. Selection of pressure gauge for measuring ammonia solution as the medium - HCBBS Forum
99. What are the special features of the special valves attached to the flanges of steel belt float level gauges? - HCBBS Forum
100. I didn’t give a gift on Teachers’ Day, so the teacher asked me to make it up the next day. - HCBBS Forum