English — Forum #723 (Page 401/642)

1. Can a 2X-4 rotary vane vacuum pump be filled with L-TSA46 turbine oil or air compressor oil? - HCBBS Forum
2. Environmental Protection Daily Question 1.4: Participate for a prize; 3 correct answers earn an additional 5 points as a reward - HCBBS Forum
3. Haichuan Gratitude Season – The First \"Pot of Gold\" for Backpackers [Workplace Section 007] - HCBBS Forum
4. Causes of nitrogen oxides in sulfuric acid roasting furnaces - HCBBS Forum
5. How is the height of activated carbon in the filtration tank calculated? - HCBBS Forum
6. If there is phenol in the process pipeline and the temperature is 200 degrees, what material should be used for the gasket inside the stop valve on the pressure gauge? - HCBBS Forum
7. Which material pipelines in the coal tar processing plant are suitable for nitrogen purging? Why? - HCBBS Forum
8. The flow rate of the orifice plate flow meter decreases - HCBBS Forum
9. A powerful tool for putting children to sleep - HCBBS Forum
10. How should this sentence be interpreted? - HCBBS Forum
11. Compressor unit barring - HCBBS Forum
12. Under what circumstances does the pressure at the top of the tower decrease while the pressure in the reflux tank increases? - HCBBS Forum
13. Raise your hand if you worked overtime from January 1st to 3rd - HCBBS Forum
14. Issues with the commissioning of propane deasphalting - HCBBS Forum
15. If the heavy components in the feed to the distillation tower increase, how does the temperature at the bottom of the tower change? Why? - HCBBS Forum
16. I would like to order a section of pipe with a non-standard diameter; the material should be API 5L GR.B. How should I describe it, and what are the inspection and acceptance criteria? - HCBBS Forum
17. 【Daily Question】 December 29th True or False Question - HCBBS Forum
18. Hollysys system alarm file - HCBBS Forum
19. The surface of stainless steel seamless pipes turns black after being reheated - HCBBS Forum
20. What are the typical amounts of purified water added to the reflux tank at the top of the amine liquid regeneration tower, and of acidic water discharged from it? - HCBBS Forum
21. What about trust between people? - HCBBS Forum
22. Application of vacuum cleaning systems in pharmaceutical cleanrooms - HCBBS Forum
23. The proper way to eat roast duck - HCBBS Forum
24. Why does a reciprocating compressor experience surging? - HCBBS Forum
25. Share the constant pressure and reduced pressure extraction rate data - HCBBS Forum
26. How to remove calcium sulfate - HCBBS Forum
27. Why does a water ring vacuum pump lose its vacuum? - HCBBS Forum
28. 【Voice】Ask why more often when addressing potential risks - HCBBS Forum
29. Electrostatic demisting and sewage blockage removal - HCBBS Forum
30. Please help upload the electronic version of \"Oil and Gas Gathering, Transportation, and Field Processing\" compiled by Feng Shuchu, Guo Kuichang, and others - HCBBS Forum
31. Dear brothers and sisters, Happy New Year! - HCBBS Forum
32. Is the weldable primer an important factor in the evaluation of welding processes? - HCBBS Forum
33. Is Q345R resistant to hydrogen corrosion? - HCBBS Forum
34. Environmental Protection Daily Question 1.7: Participate for a prize; 3 correct answers earn an additional 5 as a prize - HCBBS Forum
35. 【Daily Topic】【Engineering Version 20160104】 - HCBBS Forum
36. Environmental Protection Daily Question 1.2: Participate for prizes; 3 correct answers earn an additional 5 prizes - HCBBS Forum
37. 【Daily Topic】【Storage & Transportation Edition 20160106】 - HCBBS Forum
38. What’s your opinion on giving and receiving? - HCBBS Forum
39. Can a moderator revoke the privileges of a VIP member? - HCBBS Forum
40. Regarding the number of operation stations in the central control room and their relationship with the instrument control circuits, the number of operation stations in the design depends on what... - HCBBS Forum
41. Homogeneous reaction distillation catalyst recovery - HCBBS Forum
42. The effluent from the secondary sedimentation tank is turbid - HCBBS Forum
43. Nozzle code - HCBBS Forum
44. How to calibrate the zero point of a differential pressure flow meter? - HCBBS Forum
45. Is it possible to work 12 hours a day in **chemical production - HCBBS Forum
46. What is an SR List? - HCBBS Forum
47. 【Daily Question】1/9/2016: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
48. 【Daily Question】1.6 Conditions for the occurrence of stress corrosion (3 wealth points for a reply + additional 3–8 wealth points if the answer is correct) - HCBBS Forum
49. 【Joint Study*】【HVAC Version 20160106】 - HCBBS Forum
50. 【Daily Question No. 59】January 5, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
51. 【Daily Topic】【Storage & Transportation Edition 20151229】 - HCBBS Forum
52. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 411 - HCBBS Forum
53. Conjisen’s PLC system - HCBBS Forum
54. 【Daily Question】2016 1.8 Multiple-choice question: What should be the standard purity of nitrogen used for pipeline purging? ( )% - HCBBS Forum
55. Steps for backing up Moore system databases - HCBBS Forum
56. Seek help with any set of process flow diagrams= = - HCBBS Forum
57. Start-up and maintenance of shielded pumps - HCBBS Forum
58. Haichuan Gratitude Season--My First Job [Workplace Section 004] - HCBBS Forum
59. Registered power - HCBBS Forum
60. There are especially many rumors about rocket trades every year, and the same is true this year - HCBBS Forum
61. Can propane be used instead of acetylene in gas welding and cutting to reduce costs? - HCBBS Forum
62. Where do all you safety engineers buy your textbooks from? - HCBBS Forum
63. Received the USB drive sent by Haichuan to spend some money - HCBBS Forum
64. 【Daily Question】1. Classification of corrosion caused by sulfur in 1.5 crude oil (3 wealth points for a reply; +3 to +8 wealth points for a correct answer) - HCBBS Forum
65. Regarding the common insulation thickness? ? ? ? ? ? ? ? ? ? ? - HCBBS Forum
66. What is the reflux ratio related to? - HCBBS Forum
67. Valves for the food industry - HCBBS Forum
68. What are the aeration rates in winter and summer? - HCBBS Forum
69. Operations Team salaries for December 2015 - HCBBS Forum
70. Why do I, as a member of this version’s technical team, still have restricted permissions? - HCBBS Forum
71. 【Daily Question】 January 12 Which part of the coke tower is prone to thermal stress corrosion deformation? - HCBBS Forum
72. Why do back-pressure steam turbines have a protection mechanism against too low exhaust pressure, but not one against too high exhaust pressure? - HCBBS Forum
73. A collection of delicious foods from my hometown - HCBBS Forum
74. Issues regarding the fixation of the self-priming pump base to the equipment foundation - HCBBS Forum
75. Evaluation indicators for PID parameter tuning - HCBBS Forum
76. I have a question regarding installation companies - HCBBS Forum
77. Haichuan Gratitude Season--My First Mentor【Workplace Section 003】 - HCBBS Forum
78. 【Daily Question】1.3 Short-answer question: Why does the equipment need to stop operating periodically? - HCBBS Forum
79. 316L stainless steel *ao acid passivation process - HCBBS Forum
80. Can a storage tank equipped with a breather valve be fitted with a single-flange level gauge? - HCBBS Forum
81. HaiChuan Thanksgiving – Remembering Our Beloved Teachers 【Industry Area 003】 - HCBBS Forum
82. Ten years in the chemical industry, a first-class construction engineer qualification, and experience in cost estimation – what should I do next? - HCBBS Forum
83. 【Safety Story】Complacency Nearly Causes Disaster - HCBBS Forum
84. ★Specialized Examination for Chemical Engineering ★ — One question per day (2016-1-9) — Points are awarded for participation - HCBBS Forum
85. Does anyone know the contact information for the Italian representative office of AST valves? - HCBBS Forum
86. [Fable] Safety and Accidents - HCBBS Forum
87. Regarding the layout within the tank farm and the fire separation distances between the tank farm and other process units and facilities - HCBBS Forum
88. 【Voice】Safety management: Don’t blame bad luck - HCBBS Forum
89. What qualifications are required for the design of medical oxygen supply systems? - HCBBS Forum
90. Coking, distillation tower, design - HCBBS Forum
91. Can carbon steel containers also be pickled and passivated? - HCBBS Forum
92. What is the consumption for producing 1 ton of PET raw material and utilities? - HCBBS Forum
93. Looking for good books - HCBBS Forum
94. Real estate advertisements shall not promise to handle household registration for homebuyers - HCBBS Forum
95. The number of real estate companies in China could drop from tens of thousands to just a thousand - HCBBS Forum
96. 【Daily Question No. 87】December 30, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
97. The pressure transmitter keeps dropping after being zeroed at the site - HCBBS Forum
98. 【Daily Question】1. Corrosion of 1.2 carbon steel in strong acids (3 wealth points for a reply; +3 to +8 wealth points for a correct answer) - HCBBS Forum
99. Seeking advice on career planning - HCBBS Forum
100. These past two years - HCBBS Forum