English — Forum #723 (Page 434/642)

1. Regarding the back pressure of safety valves - HCBBS Forum
2. Request for the overall layout of the internal structure of the 1600 ammonia synthesis tower - HCBBS Forum
3. Intergranular corrosion of heat exchange tubes - HCBBS Forum
4. Questions about composite hoses - HCBBS Forum
5. Sierle thermal mass flow meter - HCBBS Forum
6. Quick exhaust valve - HCBBS Forum
7. 【Daily Question】Wastewater Knowledge - 12-2 (2 points for an answer, 5 points for a correct answer) - HCBBS Forum
8. Compressor oil tank heat transfer oil - HCBBS Forum
9. Compressor packing issues - HCBBS Forum
10. What is the theory of explosion-proof technology? - HCBBS Forum
11. Briefly describe the requirements for overhauling plate towers? - HCBBS Forum
12. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 224 - HCBBS Forum
13. 【Daily Question】December 04, 2015: Reasons for excessive vibration in the smoke extractor - HCBBS Forum
14. Can the slag produced by adding alkali during the lead-alkali fire refining process be used in large quantities in blast furnaces? - HCBBS Forum
15. Complaining about the process of finding a house - HCBBS Forum
16. Refining method for ferrous sulfate - HCBBS Forum
17. Treatment of the condensed oil from the atmospheric and vacuum distillation columns - HCBBS Forum
18. Seeking help with issues regarding drum cold slaggers - HCBBS Forum
19. 【Daily Question No. 64】November 27, 2015: +2 wealth for participation, plus another +3 to +8 wealth for correct answers - HCBBS Forum
20. Kerosene co-refining technology - HCBBS Forum
21. Should the two safety valves of a pressure vessel be operated one at a time with one as a backup, or should they all be in use? - HCBBS Forum
22. Renovation of small boilers - HCBBS Forum
23. Loading technology plan for the acid salt tank area - HCBBS Forum
24. LNG ship gasification process - HCBBS Forum
25. What to do if SO2 levels are too high in biomass boilers - HCBBS Forum
26. Regarding the operating mechanism of the inlet and outlet valves of the air compressor - HCBBS Forum
27. Nitrogen and oxygen content in polluted gas - HCBBS Forum
28. How to obtain a **Administrator Certificate? Is it mandatory? - HCBBS Forum
29. THEROELEMENT WITH EXTERNAL TRANSMITTER HOKOTHERMOELEMENT WITH EXTERNAL TRAN... - HCBBS Forum
30. Has anyone solved the examples on tubular reactors in Mr. Bao Zonghong’s book? - HCBBS Forum
31. 【Daily Question】December 05, 2015: Drop in steam pressure of the turbine - HCBBS Forum
32. Should N and P be removed from printing and dyeing wastewater? - HCBBS Forum
33. Process comparison between coal tar fluidized-bed hydrogenation and fixed-bed hydrogenation - HCBBS Forum
34. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-12-1) — Points are awarded for participation - HCBBS Forum
35. Reason for air absorption at the high point of the water cooler circulating water outlet - HCBBS Forum
36. Non-intelligent locator calibration - HCBBS Forum
37. Sichuan Jinxiang Petrochemical is recruiting professionals from various fields - HCBBS Forum
38. 【Daily Question】11.25 Reply +2； To +3 - HCBBS Forum
39. Regarding the switch for the oil cooler - HCBBS Forum
40. What chemical syntheses generate waste sodium hydroxide? - HCBBS Forum
41. What does potential free auxiliary contact mean? - HCBBS Forum
42. E+H Instrument Selection Sample - HCBBS Forum
43. Buchhard - HCBBS Forum
44. Intrinsic safety explosion protection - HCBBS Forum
45. Rework of pump and valve castings - HCBBS Forum
46. What materials are used for the internal and external anti-corrosion protection of buried pipelines? - HCBBS Forum
47. What is the most important factor affecting the treatment of metals in colored smelting wastewater using lime milk? - HCBBS Forum
48. Material of wastewater treatment stripping tower - HCBBS Forum
49. How to determine the maximum operating pressure of a device - HCBBS Forum
50. 【Daily Question】Question from 20151126 - HCBBS Forum
51. Which are the domestic manufacturers of LNG refrigeration units capable of producing 20,000 to 30,000 cubic meters of natural gas per day? - HCBBS Forum
52. 【Daily Question】Dec 3, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
53. 【Basic Knowledge 3】: What is low chromium? (Prize quiz) - HCBBS Forum
54. (Basic knowledge) In which fluidization states do industrial boilers and power station boilers currently fall? - HCBBS Forum
55. Briefly describe methanol poisoning and first aid measures? - HCBBS Forum
56. The solid waste dump (slag wax and woven bags) has been classified as Grade C; is it considered a hazardous release source? - HCBBS Forum
57. What are the appropriate levels for the production capacity, actual output, and finished product inventory of compound fertilizer companies? Let’s discuss it together. - HCBBS Forum
58. What are the common extremely hazardous (Class 1) media? - HCBBS Forum
59. Liquid ring vacuum pump - HCBBS Forum
60. What is the process of semi-dry flue gas desulfurization using a circulating fluidized bed at normal temperature? - HCBBS Forum
61. Hello everyone, a newcomer is here! ! ! - HCBBS Forum
62. The difference between a level transmitter and a level sensor - HCBBS Forum
63. What is a dissolved acetylene cylinder? - HCBBS Forum
64. Temperature for activated carbon regeneration - HCBBS Forum
65. Is it snowing where you are? - HCBBS Forum
66. 【Daily Question】Question from 20151125 - HCBBS Forum
67. Emergency measures for DCS screen blackout - HCBBS Forum
68. Anchoring nails and turtle shell mesh - HCBBS Forum
69. Is it very dangerous to load and unload material below the floating disk of an internal floating roof tank? - HCBBS Forum
70. How is the major repair plan formulated? - HCBBS Forum
71. Communication between Siemens and touch screen - HCBBS Forum
72. If there is water in the distillation column, when the temperature at the bottom of the column increases, will the water vapor remain at the bottom or move towards the top? - HCBBS Forum
73. Has anyone seen single-stage electrodesalination? - HCBBS Forum
74. In the interlocked reaction of gasoline hydrodesulfurization, why is the emergency pressure relief valve set to FC (fail-closed)? - HCBBS Forum
75. Are there any LED strip lights? - HCBBS Forum
76. How to calculate the load-bearing capacity of channel steel used as guide rails? - HCBBS Forum
77. Problems with the flexible hoses in storage tanks - HCBBS Forum
78. Regarding the issue of equipment lifting - HCBBS Forum
79. MTBE plant methanol wash tower - HCBBS Forum
80. 【Daily Question】11.30 Daily Question - HCBBS Forum
81. May I ask what are the methods for dealing with the waste sulfuric acid produced by gold refining plants? - HCBBS Forum
82. Turbocharger overspeed protection test. - HCBBS Forum
83. What are the main components of scale and corrosion products respectively? - HCBBS Forum
84. Seek the production process for iron phosphate - HCBBS Forum
85. The Rosemount 3501 differential pressure transmitter suddenly reached full scale - HCBBS Forum
86. In the caustic soda plant, what stage is PRECONCENTRATION? - HCBBS Forum
87. liu - HCBBS Forum
88. What should I do if the temperature control system is always slow to respond and laggy? - HCBBS Forum
89. Regarding the exhaust gas treatment in the exhaust gas area of Class A storage tanks, how should the diameter of the exhaust gas pipes be determined? - HCBBS Forum
90. What are the common types of pressure gauges used for spherical tanks? - HCBBS Forum
91. Aspen absorption related - HCBBS Forum
92. Why cannot the SHS030010-2004 standard be used when discussing imported pumps? - HCBBS Forum
93. What impact does it have on the catalyst if the temperature in the ammonia synthesis furnace exceeds 500 degrees for 3 hours, resulting in an imbalance in the hydrogen-to-nitrogen ratio? - HCBBS Forum
94. What should be done if the water turns yellow after organic wastewater is treated with a flocculant? - HCBBS Forum
95. Regarding the wear of the mixer shaft sleeve - HCBBS Forum
96. Flow meter - HCBBS Forum
97. Mixture enthalpy - HCBBS Forum
98. What factors are related to the PV characteristics of the isolation diaphragm? - HCBBS Forum
99. What should be considered when repairing castings? - HCBBS Forum
100. What are the principles for selecting the assembly reference for steel structures? - HCBBS Forum