English — Forum #723 (Page 410/642)

1. Problems encountered in acid removal - HCBBS Forum
2. Cold wall valve body - HCBBS Forum
3. There are several ways to extend the service life of boiler water wall tubes and improve their wear resistance - HCBBS Forum
4. China’s Top 10 Fertilizers with the Best Quality - HCBBS Forum
5. Can screw pumps experience cavitation? - HCBBS Forum
6. Regarding the issue of chlorine liquefier leakage - HCBBS Forum
7. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for those who participate； Question 240 - HCBBS Forum
8. Should I leave quietly? - HCBBS Forum
9. Application criteria and supply-demand information for sodium phenolate - HCBBS Forum
10. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 394 - HCBBS Forum
11. 【Basic Knowledge 23】Into which categories is metal corrosion classified according to the corrosion environment? (Premium quiz) - HCBBS Forum
12. Problem of multiple paths along a route and mutual influence of traffic flows - HCBBS Forum
13. 【Daily Question】Chemical Engineering Principles 276: Counterflow Regenerated Fixed Bed (December 27) - HCBBS Forum
14. Refinery delayed coking system - HCBBS Forum
15. What are the reasons for the slow sedimentation of activated sludge in the aerobic tank of wastewater treatment? - HCBBS Forum
16. Vibration in steam condensate pipes - HCBBS Forum
17. How to address liquid carryover in the MTO gas-phase methanol feed - HCBBS Forum
18. What are the differences between PVC, UPVC, PPR, and PE? Could some expert explain this? - HCBBS Forum
19. The Top 10 Things That Should Not Be Forgotten in 2015 - HCBBS Forum
20. How should designers deal with such reviewers? - HCBBS Forum
21. What should I do if an electric dark stem gate valve will not close? - HCBBS Forum
22. Is there any difference between 505 overspeed ejection and 203 overspeed ejection? - HCBBS Forum
23. Issues related to the vibration of measuring equipment - HCBBS Forum
24. Can a variable-frequency motor be used for Naisch pumps? - HCBBS Forum
25. | Professional Knowledge Q&A - HCBBS Forum
26. Flue gas online - HCBBS Forum
27. 【Daily Question】December 18, 2015: True/False Questions on Boiler Fundamentals (2 wealth points for replying, plus 3–8 additional wealth points for correct answers) - HCBBS Forum
28. Issues related to wiring from the cable tray to field instruments or pumps - HCBBS Forum
29. Seek design standards for heat exchangers - HCBBS Forum
30. Can the heat energy from the air compressor’s circulating cooling water be recovered? - HCBBS Forum
31. Classification of major petrochemical product categories - HCBBS Forum
32. Corrosion of carbon steel by 1000 chloride ions - HCBBS Forum
33. Issues regarding the cleaning of the filter cartridges in the quench water filters of sulfur plants - HCBBS Forum
34. Issues regarding the mandatory calibration of flammable and toxic gas detectors - HCBBS Forum
35. Question regarding the pressure behind the steam trap, urgent - HCBBS Forum
36. The accident serves as another warning: safety measures at the end of the year must be ensured in all five aspects” - HCBBS Forum
37. Ammonia solution unit conversion tt - HCBBS Forum
38. Positive pressure or negative pressure? - HCBBS Forum
39. Magnetic flap level gauge with remote transmission - HCBBS Forum
40. Phosphoric acid evaporation concentration - HCBBS Forum
41. How to improve the service life of anti-overflow baffles in high-pressure flash tanks? - HCBBS Forum
42. Oxidation furnace, incinerator - HCBBS Forum
43. What are the benefits for employees hired through market mechanisms at CNPC East China Research Institute? - HCBBS Forum
44. Who has prepared a turbine coastdown time curve? Which indicators should be focused on? Is it easy to control? How to control it? - HCBBS Forum
45. Temperature difference control issue in distillation towers - HCBBS Forum
46. 【Daily Question】December 17, 2015: Causes of fillet weld deformation (2 wealth points for a reply; +3–8 additional wealth points if the answer is correct) - HCBBS Forum
47. 【Daily Topic】【HVAC Version 20151223】 - HCBBS Forum
48. 【Daily Question】12.24 Term Explanation: Dew point - HCBBS Forum
49. 【Daily Question】Chemical Engineering Principles 266: Chemical Desalination (December 17) - HCBBS Forum
50. Resending 【One Question per Day】12.25 Multiple-choice Question: Cold Reflux - HCBBS Forum
51. Interlocking commissioning record - HCBBS Forum
52. Furnace maintenance platform - HCBBS Forum
53. Help with a distillation multiple-choice question. - HCBBS Forum
54. What is the difference between Design Specs and those under Design Specs in Flowsheeting Options? - HCBBS Forum
55. Looking for a project manager - HCBBS Forum
56. 2015 Design Institute - HCBBS Forum
57. Have you ever seen a intrinsically safe, explosion-proof portable density meter? Those who have seen it, please report back; I’ll give out year-end red envelopes. . . - HCBBS Forum
58. 【Mechanical Zone】Freezing Prevention for Pumps That Are Shut Down During the Winter Period 【006】 - HCBBS Forum
59. Why are some tank equipment installed in pits? - HCBBS Forum
60. Weekly topic: Several polymerization reactors use electric bottom valves; there are issues and precautions in their use, with a reward of 15–30 wealth points - HCBBS Forum
61. RTO exhaust emission control - HCBBS Forum
62. If you don’t visit cheap eateries, you won’t know the true taste of Sapporo cuisine - HCBBS Forum
63. Can someone else handle the application for a professional title on my behalf? - HCBBS Forum
64. inside - HCBBS Forum
65. Who knows the price of pressure guide tubes? - HCBBS Forum
66. 【Basic Knowledge 17】Why can corrosion resistance be evaluated for uniform corrosion, but not for localized corrosion? (Puzzle with prizes) - HCBBS Forum
67. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 246 - HCBBS Forum
68. A level gauge that can detect leaks in oil tanks – does anyone with expertise know how to deal with this? - HCBBS Forum
69. Piping - HCBBS Forum
70. Leak in hydrogen production conversion steam generator - HCBBS Forum
71. Barça is playing Evergrande tonight – is there anyone betting on an upset? - HCBBS Forum
72. Regarding the gasification furnace - HCBBS Forum
73. Production of sulfuric acid from sulfur-containing exhaust gases - HCBBS Forum
74. I would like to ask what is the difference between the top reflux of a distillation column and the product taken out? - HCBBS Forum
75. TRIM Control Logic - HCBBS Forum
76. Use of consumables for the three filters in screw air compressor maintenance. - HCBBS Forum
77. Methods to increase the compressor displacement - HCBBS Forum
78. What qualifications are required to manufacture equipment? - HCBBS Forum
79. What vacuum pump is suitable for synthetic reaction vessels? - HCBBS Forum
80. 【Picture of the Day】12.17 Take a look – what task has just been completed at the valve flange in this image? - HCBBS Forum
81. Selection of flowmeters for high temperature, high viscosity, and highly corrosive conditions - HCBBS Forum
82. Ask about the start of operations for coking absorption - HCBBS Forum
83. Which type of field pressure gauge should be used to measure steam? - HCBBS Forum
84. The issue of the service life of activated carbon filters - HCBBS Forum
85. I’ve had enough of dealing with such worthless, unethical companies; I’m giving everyone a warning! - HCBBS Forum
86. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 244 - HCBBS Forum
87. Issue of clear distance for instruments/cable trays - HCBBS Forum
88. Mechanical seal mapping - HCBBS Forum
89. Reasons for motor over-vibration - HCBBS Forum
90. Experts, please help! It’s about the issue of rising pressure inside the reaction vessel! - HCBBS Forum
91. Turbine issues - HCBBS Forum
92. 【Daily Question】December 19, 2015: Boiler Basics True/False Questions (2 wealth points for replying; +3–8 additional wealth points for correct answers) - HCBBS Forum
93. 【Daily Topic】【HVAC Version 20151221】 - HCBBS Forum
94. Power supply issues in different plant sites - HCBBS Forum
95. I have a question for my colleagues in the design field: what is the basis for setting the pressures of the primary and secondary oil, gas, and water separators at oilfield sites? - HCBBS Forum
96. I have a question: in the two cases of connecting pipes to a device and connecting them to existing pipes, what should be done to the ends of those pipes... - HCBBS Forum
97. 20151218 One question per day - HCBBS Forum
98. Questions about the calcination furnace - HCBBS Forum
99. Should the valve between the liquefied gas tank and the dehydration pack be normally open or normally closed in winter? - HCBBS Forum
100. Calculate the total flue gas flow and heat of the waste heat boiler. - HCBBS Forum