English — Forum #723 (Page 310/642)

1. Is this soccer or billiards? - HCBBS Forum
2. MAN overall gear-type compressor animation - HCBBS Forum
3. Is there a way to clean plate heat exchangers without shutting down the system? - HCBBS Forum
4. Need the number of teeth on the speed increase gear for the Atlas GA250W-7.5 air compressor - HCBBS Forum
5. Resistance of cable shield after grounding - HCBBS Forum
6. Storage, transportation, and measurement - HCBBS Forum
7. Reasons why ammonium sulfate crystals cannot be formed in ammonia-based desulfurization - HCBBS Forum
8. Phenol production - HCBBS Forum
9. Who has catalytic cracking simulation software? - HCBBS Forum
10. What are your insights on the various balances involved in upgrading oil quality? - HCBBS Forum
11. Methanol Weekly Topic: What are the quality issues with pure methanol? 2016.04.10---2016.04.17 - HCBBS Forum
12. Issues related to the utilization of exhaust gas from gas turbines paired with compressors in compression stations - HCBBS Forum
13. 【Daily Question】Chemical Engineering Principles 354: Resin Working Layer (April 5) - HCBBS Forum
14. 【Daily Question】The main components of a centrifugal pump are ——, —— and ——. - HCBBS Forum
15. Seeking purchase of aromatic hydrocarbon hydrogenation saturation catalyst (for residue oil) - HCBBS Forum
16. Emerson mass flow meter – red light alarm - HCBBS Forum
17. What role does an ultraviolet sterilizer play in water treatment? - HCBBS Forum
18. What is the difference between a centrifugal ventilator and an exhaust fan? - HCBBS Forum
19. 【Daily Topic】【Electrical Edition 20160403】 - HCBBS Forum
20. 【Weekly Topic】【HVAC Version 20160407】 - HCBBS Forum
21. Execution standards for K alloy - HCBBS Forum
22. The problem of high noise in double-suction centrifugal pumps with support at both ends - HCBBS Forum
23. There are so many options; I’m almost sick from thinking about them - HCBBS Forum
24. The river water around the discharge area turns black; what chemicals can be used to alleviate this? - HCBBS Forum
25. How to repeat the Level 1 Mechanical and Electrical Practice course** - HCBBS Forum
26. Seeking used equipment - HCBBS Forum
27. 6 kilograms of saturated steam converted to 16 kilograms of superheated steam - HCBBS Forum
28. Low concentration of acidic gas in Klaus sulfur recovery; leakage from the waste boiler - HCBBS Forum
29. Can the sludge from the secondary sedimentation tank behind the biological contact oxidation tank be returned to the UASB? - HCBBS Forum
30. 40,000 yuan external pressure oxygen generator, with argon; seeking clarification on the function of the expanded air bypass nitrogen purge - HCBBS Forum
31. Relationship between valve opening degree and flow, pressure, and velocity - HCBBS Forum
32. How to choose a good air purifier? - HCBBS Forum
33. Can one still take the exam to become a registered environmental engineer? - HCBBS Forum
34. Summary of urea market conditions across China in April 2016 - HCBBS Forum
35. May I ask what the typical pressure for sulfur-resistant shift reactions is? Is 3kg of pressure okay? - HCBBS Forum
36. One Question per Day on Synthetic Ammonia (Series 59) - HCBBS Forum
37. For the final project, a 3-cubic-meter mixing tank is required to have a flat cover; is the connection between the mixing device and the flat cover still achieved through flange fittings? - HCBBS Forum
38. Is there a density gauge that allows one to set the density at any time? - HCBBS Forum
39. Sign-in record post from March 30, 2016 - HCBBS Forum
40. Requirements for biogas desulfurization - HCBBS Forum
41. Regarding the purchase of the Chinese version of Iran’s **Oil Standards (IPS)** - HCBBS Forum
42. Transmitter for measuring negative pressure - HCBBS Forum
43. Can 8-character blind plates be used in low-temperature environments? - HCBBS Forum
44. What causes the low pressure difference in the stripping tower and large fluctuations in the flow rate of the material at the tower top? - HCBBS Forum
45. Increase the reflux ratio in the upper column stripping section - HCBBS Forum
46. Regarding the issue of pipeline flow calculation - HCBBS Forum
47. Calculation of water content in catalytic cracking regeneration flue gas - HCBBS Forum
48. Poisoning incident at a heavy industry firm in Yangzhou results in 2 deaths and 4 injuries - HCBBS Forum
49. When the heat exchange area is the same, consider whether to use two small heat exchangers in series or one large heat exchanger - HCBBS Forum
50. Common unit conversions in petrochemicals - HCBBS Forum
51. Issues with selecting high-temperature heavy oil pumps? ? - HCBBS Forum
52. In-depth Article ‖ Analysis and Forecast of the Supply and Demand Situation of MTBE and Alkylated Gasoline in China - HCBBS Forum
53. Question 43 from the afternoon of the first day of 2010: Pumps for ethylene oxide - HCBBS Forum
54. Does ozone sterilization have an impact on carbon steel lined with rubber? - HCBBS Forum
55. What materials are commonly used for heat exchange tubes? Austenitic stainless steel? Ferritic stainless steel? - HCBBS Forum
56. Compressor - HCBBS Forum
57. -200-degree pipeline insulation! Urgent! Urgent! Urgent! - HCBBS Forum
58. The purity of n-butane produced as a by-product of alkylation is 98% - HCBBS Forum
59. Regarding the bricklaying time for the water-coal slurry gasifier - HCBBS Forum
60. Heat treatment of high-strength studs for pressure vessels - HCBBS Forum
61. What is the main impact of the cracking reactor on product quality? - HCBBS Forum
62. Both pumps use flushing scheme No. 32, and both experience the issue of the flushing oil pump becoming empty as soon as it is started? ? - HCBBS Forum
63. The self-supporting vaults used in the external pressure calculations per GB50341 are extremely thick – did I make a mistake in my calculations, or is this indeed a common feature? - HCBBS Forum
64. Alkyl glycoside technology services - HCBBS Forum
65. Latest solutions for using sulfur pumps - HCBBS Forum
66. How to quote for equipment - HCBBS Forum
67. Questions about helical bevel gear drives - HCBBS Forum
68. Regarding the selection of the sequence of aromatization, isomerization, and hydrodesulfurization in the hydrodesulfurization of heavy gasoline? - HCBBS Forum
69. What are the criteria for selecting process valves? - HCBBS Forum
70. Inconel 600 and Inconel 800H - HCBBS Forum
71. Fluctuations in the pressure difference of the gasifier burner cause an increase in tray temperature and process gas temperature - HCBBS Forum
72. What is the minimum suction force for a coke oven chimney? - HCBBS Forum
73. “\"Low-speed growth\" represents the new trend in the supply and demand dynamics of China’s natural gas market during the 13th Five-Year Plan period - HCBBS Forum
74. Seeking assistance regarding standard Q/SH 349 0246-2012 - HCBBS Forum
75. I would like to ask everyone: in the low-temperature methanol washing process that features a pre-washing system, has anyone used an antifoaming agent? - HCBBS Forum
76. Cooling of hot water - HCBBS Forum
77. Just tap the electromagnetic flowmeter twice – why? - HCBBS Forum
78. Seek HR500 centrifugal oil pump drawings - HCBBS Forum
79. Why is the limit for secondary stresses in calculations much larger than the range for primary stresses? - HCBBS Forum
80. Problems with vacuuming in the mixing tank - HCBBS Forum
81. What is the mechanism by which lack of sleep causes headaches? - HCBBS Forum
82. Seeking information and examples on sidetrack production - HCBBS Forum
83. Regarding the flow rate of sulfurized oil - HCBBS Forum
84. What material is good for the tower body of tower equipment? - HCBBS Forum
85. What are the precautions for using heat pipe heat exchangers? - HCBBS Forum
86. Discussion on the integration of workshop chiller control into DCS - HCBBS Forum
87. Can a positive-pressure container withstand operation under slight negative pressure? - HCBBS Forum
88. Cyclic hydrogen desulfurization - HCBBS Forum
89. Foreign standard code - HCBBS Forum
90. Handling when the fire separation distance is insufficient - HCBBS Forum
91. Issues with the composition of coke oven flue gas - HCBBS Forum
92. I have questions regarding non-destructive testing of pipelines - HCBBS Forum
93. Seeking help with nitration and denitrification issues - HCBBS Forum
94. The time required for the seed soaking technique using biogas and biogas slurry - HCBBS Forum
95. Compensation issues in high-pressure steam pipelines - HCBBS Forum
96. 【MTBE】MTBE process operation - HCBBS Forum
97. Weekly Urea Market Report for the First Week of April 2016 - HCBBS Forum
98. What is the difference between a 105o elbow and a 75o elbow? - HCBBS Forum
99. What is the minimum distance between the two openings? - HCBBS Forum
100. Pressure swing adsorption for hydrogen production - HCBBS Forum