English — Forum #723 (Page 405/642)

1. Heat exchanger calculations – Design issues related to the tubes - HCBBS Forum
2. 【Daily Question】December 25, 2015 – Boiler Basics True/False Questions (Top 50 responders receive +3 wealth points; those who get it right receive an additional +3 to +8 wealth points) - HCBBS Forum
3. Who has the WOD version of past safety engineering exam questions and answers? - HCBBS Forum
4. Low outlet temperature of the air separation pre-cooler - HCBBS Forum
5. ASME B18.31.1M - HCBBS Forum
6. Help—2500BL Metal Hard-Sealed Ball Valve - HCBBS Forum
7. 【Daily Topic】【Storage & Transportation Edition 20151222】 - HCBBS Forum
8. Reason for the high carbon dioxide content in the double alkali reaction AⅠ - HCBBS Forum
9. It has been snowing non-stop - HCBBS Forum
10. Sign-in record post dated December 28, 2015 - HCBBS Forum
11. The water removal issue prior to the PSA nitrogen generation unit - HCBBS Forum
12. 【Daily Question】12.25 (Christmas special) Choose which of the following represents the anode (+3 wealth for a reply +3–8 wealth for a correct answer) - HCBBS Forum
13. 【Daily Question】December 24, 2015 – Boiler Basics True/False Questions (Top 50 responders receive +3 wealth points; those who get it right earn an additional +3 to +8 wealth points) - HCBBS Forum
14. Discussion on the water washing and separation process - HCBBS Forum
15. I have a question about PDMS - HCBBS Forum
16. Ethanol-blended gasoline is gaining attention again, but the path to its widespread adoption remains challenging - HCBBS Forum
17. Water pressure - HCBBS Forum
18. How to find the cause of severe corrosion on the inner wall of an autoclave. - HCBBS Forum
19. Advances in alkylation technology - HCBBS Forum
20. High-efficiency heat exchange tube heat exchanger - HCBBS Forum
21. ABB frequency conversion motor sudden speed reduction issue - HCBBS Forum
22. Methods for measuring soil resistivity - HCBBS Forum
23. Searching for PKPM software - HCBBS Forum
24. 【Daily Question】12.17 Multiple-choice question: After a chlorine leak, the best way to remove chlorine from the air is to add something to the air (　　). - HCBBS Forum
25. Safety of human drinking water sparks renewed debate: Secondary pollution of tap water draws attention - HCBBS Forum
26. Use and maintenance of sinker level gauges in winter - HCBBS Forum
27. How to use grids to draw steel structures in Plant 3D? - HCBBS Forum
28. delayed coking - HCBBS Forum
29. 【Daily Question No. 82】December 23, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
30. Problems in the production process of reduction furnaces - HCBBS Forum
31. Seeking DCS calculation formulas for specific oxygen consumption and specific coal consumption - HCBBS Forum
32. On the ion-exchange membrane pipes, why is the chlorine pipeline thinner than the hydrogen pipeline? - HCBBS Forum
33. 【Daily Question】Question from Issue 20151217 - HCBBS Forum
34. 【Joint Study*】【HVAC Version 20151224】 - HCBBS Forum
35. How large should the protective embankment around the sulfuric acid tank area be? - HCBBS Forum
36. I’d like to ask the experts: how to translate such a long sentence? - HCBBS Forum
37. What type of mechanical seal should be used for 20% fuming sulfuric acid pumps (with a pump outlet pressure of 1.1 MPa)? - HCBBS Forum
38. 【Daily Question】Chemical Engineering Principles 268: Dissolved Oxygen (December 20) - HCBBS Forum
39. How three-column distillation improves the feed to the pre-distillation column and increases distillation output - HCBBS Forum
40. 【Daily Question】12.17 Methods for determining the corrosion rate of uniform corrosion (3 points for a reply; +3 to +8 points if the answer is correct) - HCBBS Forum
41. Regarding the heating of the reaction vessel - HCBBS Forum
42. What is the purpose of setting a pressure difference between the oil pressure and the nitrogen shielding gas in a reciprocating compressor? - HCBBS Forum
43. 【Daily Question】Question from Issue 20151216 - HCBBS Forum
44. Will the amine salts formed in the top reflux tank of the acidic water stripping tower enter the purified water at the bottom of the tower and affect its quality? - HCBBS Forum
45. Selection of lining materials for slurry electromagnetic flowmeters - HCBBS Forum
46. Who has the Chinese version of Autocad 2014? - HCBBS Forum
47. Why do pipes that have been left unused for a long time tend to leak more easily? - HCBBS Forum
48. What are high-temperature expanders and low-temperature expanders in ACD? - HCBBS Forum
49. Regarding the grounding issues of mixing tanks and reactors - HCBBS Forum
50. There is a high level of suspended solids in the effluent from the aerobic tank; would it be advisable to add ferric chloride? - HCBBS Forum
51. 【Serial】Design Story 59 – Completed, Light as a Feather - HCBBS Forum
52. There is a lot of foam at the drain - HCBBS Forum
53. 【Daily Question】December 28, 2015 – Participate to earn +2 wealth； +3 to 8 wealth for correct answers - HCBBS Forum
54. By following these 6 points, your execution ability will definitely be excellent! - HCBBS Forum
55. How large is the millivolt signal detected by an electromagnetic flowmeter? - HCBBS Forum
56. Discussion on VCM inhibitor types - HCBBS Forum
57. New member seeking help; hope everyone can assist - HCBBS Forum
58. Transmitter range setting issue - HCBBS Forum
59. Hey everyone, what exactly is the best way to provide assistance, and how do you upgrade it? - HCBBS Forum
60. Why are there only FF and RJ as the sealing surface types for equipment flanges, compared to pipe flanges? - HCBBS Forum
61. Latest configuration design standards for DCS operator stations and engineer stations - HCBBS Forum
62. Issues regarding the installation of graphite wound gaskets - HCBBS Forum
63. Why does the hydrogenation catalyst HDO-18 need to be reduced? - HCBBS Forum
64. I want to change my career from pipeline and equipment installation to working in the environmental protection field - HCBBS Forum
65. Manufacturing of gas, water, and crude tar separators - HCBBS Forum
66. 2015 Division Head “Award Granting Rights” Award - HCBBS Forum
67. I would like to ask how to choose a pipeline material that is resistant to corrosion at high temperatures of 500 degrees - HCBBS Forum
68. 【Daily Question】December 23, 2015 – Boiler Basics True/False Questions (Top 50 responders receive +3 wealth points; those who get it right earn an additional +3 to +8 wealth points) - HCBBS Forum
69. Originally, two heat exchangers were used in series; now it is planned to change them to a parallel configuration. Will the heat exchange efficiency decrease as a result? - HCBBS Forum
70. 【Daily Question】 December 26 True or False Question - HCBBS Forum
71. Issues regarding equipment reinforcement - HCBBS Forum
72. Doubts regarding the renovation of the company’s methanol distillation unit - HCBBS Forum
73. Discussion on Solutions for Frequent Clogging in Metering Pump Pipelines - HCBBS Forum
74. What type of pump is used to transport fermentation broth in bioengineering? - HCBBS Forum
75. Has anyone learned about Kalgon activated carbon? - HCBBS Forum
76. Is NoteChem still valuable? - HCBBS Forum
77. Help needed regarding the cooling crystallizer - HCBBS Forum
78. Skeleton oil seal model issue - HCBBS Forum
79. 【Daily Question】12.24 Multiple-choice question: The sufficient condition for combustion is ( ). (On Christmas Eve, extra reward gold coins, ... - HCBBS Forum
80. Which manufacturer produces small condensing steam turbines of better quality? - HCBBS Forum
81. 2015 Level 1 Fire Protection Case Analysis Final Exam Cheat Sheet, 1 page - HCBBS Forum
82. 【Daily Question No. 78】December 17, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
83. Calculation of oxygen pipeline flow rate - HCBBS Forum
84. 123456 - HCBBS Forum
85. Denitration SCR Wastewater treatment There is a small water collection tank after the wastewater pump in the wastewater tank – what is its purpose? - HCBBS Forum
86. What are the consequences of operating a pump under load without performing secondary grouting? - HCBBS Forum
87. Atmospheric pressure gasification and pressurized gasification - HCBBS Forum
88. Problems associated with the use of PTFE-lined centrifugal pumps - HCBBS Forum
89. Changes in feed composition during distillation operations - HCBBS Forum
90. Calculation of stainless steel pipe quality - HCBBS Forum
91. The “Provisional Measures for the Post-Evaluation of Environmental Impacts of Construction Projects” will come into effect in 2016 (full text attached) - HCBBS Forum
92. 20151221 One question per day - HCBBS Forum
93. 【Picture of the Day】11.24 Take a look – what device is shown in this picture? - HCBBS Forum
94. What is occupational safety and health? - HCBBS Forum
95. Methods and technologies for desulfurizing raw coal - HCBBS Forum
96. How to maintain the system seed concentration - HCBBS Forum
97. 【Daily Question】 11.24 Multiple-choice question: Before the water commissioning of the plant, it is necessary to perform ( .. in the pipelines and equipment. - HCBBS Forum
98. I have a question: how can I check the sign-in status? - HCBBS Forum
99. Questions regarding shell-and-tube evaporators in distillation - HCBBS Forum
100. Crude oil tank agitator - HCBBS Forum