English — Forum #723 (Page 568/642)

1. Reasons for the failure of the valve spring in reciprocating compressors - HCBBS Forum
2. Boron removal treatment from oil field fracturing return fluid - HCBBS Forum
3. Can valves with copper sealing surfaces be used with gas as the medium? - HCBBS Forum
4. May I ask everyone, what is the reason for the yellowing of reformed gasoline? - HCBBS Forum
5. Chevron patents - HCBBS Forum
6. Accident Handling 6: Circulating fluidized bed boilers – when is an emergency shutdown necessary? - HCBBS Forum
7. Various information on 200,000 tons of methanol produced from coal - HCBBS Forum
8. Issues regarding the progress of the 2015 examination for Registered Civil Engineer (Road Engineering) - HCBBS Forum
9. Back-pressure steam turbine, problems with the steam seal cooler - HCBBS Forum
10. Urgent regarding expansion joints - HCBBS Forum
11. Regarding the level gauge on the raw material tank - HCBBS Forum
12. I would like to ask fellow sailors: what material should be used for a 65%*ao acid storage tank with a volume of around 2 cubic meters? - HCBBS Forum
13. The confusion of outdoor workers - HCBBS Forum
14. 【Basic Knowledge of Glossary Definitions for “Polymers and Materials”-006】Glossary definitions related to polymers - HCBBS Forum
15. Love is holding your hand tightly - HCBBS Forum
16. The COD of the gasified wastewater is high - HCBBS Forum
17. What kind of cold plate deforms the least at around 500 degrees Celsius? - HCBBS Forum
18. This is how we handle overheating in the hydrogenation reactor of hydrogen production units - HCBBS Forum
19. Pressure gauges often break - HCBBS Forum
20. 2015 Sprint Class Lecture Notes - HCBBS Forum
21. The Ministry of Ecology and Environment has officially accepted the applications for CNOOC’s and Hebei JianTou’s coal-to-gas project in Ordos - HCBBS Forum
22. What specifications are currently in use for making openings under pressure? - HCBBS Forum
23. How to convert PPM to percentage - HCBBS Forum
24. Incident Handling 2: How do you handle a power loss in the distributed control system of the circulating fluidized bed boiler at your plant? - HCBBS Forum
25. What are the general requirements for the inspection and acceptance of composite steel plates during production? - HCBBS Forum
26. What causes the wave-like variations in the tower operating pressure? - HCBBS Forum
27. Resin type used for anti-differentiation - HCBBS Forum
28. After tightening the flange connection bolts and nuts, by how much should the bolt end face extend beyond the nut end face? What are the hazards of being too long? - HCBBS Forum
29. Heat transfer efficiency of a heat exchanger with compressor outlet flow as the heat flux - HCBBS Forum
30. Methanol Weekly Topic: How can methanol production increase reaction yield? 2015.08.03--08.10 - HCBBS Forum
31. At present, there are problems with both the pump’s mechanical seal and the fins of the air cooler; it seems that the installation was faulty. How can such issues be avoided? - HCBBS Forum
32. I’ve been in this industry for half a year now, and I feel quite lost when it comes to learning* - HCBBS Forum
33. Is there anyone from CNOOC Petrochemical (Yingkou) Co., Ltd. who is involved in the implementation of a flexible coking system? - HCBBS Forum
34. How to prove that low-pressure steam (0.7 MPa) pipelines are not explosive? - HCBBS Forum
35. Everyone, please help. I would like to ask about the reasons behind the low strength of coke after thermal reaction - HCBBS Forum
36. 【Daily Question】Question from Issue 20150807 - HCBBS Forum
37. How to treat carboxylate wastewater? - HCBBS Forum
38. Desalination water pump - HCBBS Forum
39. FAT testing using various types of containers as the base - HCBBS Forum
40. HZAOP analysis data - HCBBS Forum
41. Accident Handling 10: What are the main causes of coking in the bed material of circulating fluidized bed boilers? - HCBBS Forum
42. Can PVC pipes be used for Class B fluids in fire protection areas? - HCBBS Forum
43. Incident Handling 11: What are the reasons for the asymptotic coking of the bed material in circulating fluidized bed boilers? - HCBBS Forum
44. What material is used for the ammonia pump outlet pipeline, and what are the requirements for welding after cracks occur? - HCBBS Forum
45. Seeking drawings for the slag discharge door of the extraction tanks in DG400, DG350, or DG450 - HCBBS Forum
46. Market trends of caustic soda on August 5 - HCBBS Forum
47. 【Basic Knowledge of Reaction Mechanisms for the “Polymer” Major - 002】Basic Knowledge of the Reaction Mechanism of Polybutadiene Styrene Rubber - HCBBS Forum
48. The influence of spring brackets at both ends of the control valve on its performance - HCBBS Forum
49. Repair of diaphragm backpressure valve - HCBBS Forum
50. Calculation of pressure vessel thickness - HCBBS Forum
51. How can feeding be carried out during the start-up of 3-column continuous distillation to obtain qualified product as quickly as possible? - HCBBS Forum
52. Pressure relief issues in vinyl chloride reactors - HCBBS Forum
53. Development and application of a microcomputer management system for piped liquefied gas - HCBBS Forum
54. I would like to ask the teachers about catalytic back-pressure steam turbines. - HCBBS Forum
55. Torch emission - HCBBS Forum
56. I’m an outsider when it comes to instruments - HCBBS Forum
57. Replacing the inverter in a standard high-voltage motor - HCBBS Forum
58. In rubber production, how is the Mooney index controlled, and what are its effects on the products? - HCBBS Forum
59. What is the best process for treating formaldehyde wastewater? - HCBBS Forum
60. Any good ideas on what to do if the mechanical seal is leaking? - HCBBS Forum
61. Issues with pressure vessel safety valves - HCBBS Forum
62. Safety Valve Specification Sheet - HCBBS Forum
63. Regarding the issue of ammonia causing activated carbon particles to burn - HCBBS Forum
64. I would like to ask about the differences between press-ring type and collar type - HCBBS Forum
65. Let’s discuss what preventive measures should be taken for boilers during thunderstorm weather - HCBBS Forum
66. Has anyone studied recent domestic animated series? See if what I said is right. - HCBBS Forum
67. Why do planes use kerosene? - HCBBS Forum
68. How to solve the vibration problem in the feed line of the initial distillation tower - HCBBS Forum
69. Please discuss: What should be the setting of the manual valve in front of the pressure gauge during normal production? ”Is there a problem with this question? - HCBBS Forum
70. Should I take the Kaoyan assessment or not? - HCBBS Forum
71. What methods are used for the deep dehydration of ethylene glycol produced industrially? - HCBBS Forum
72. “Haichuan Irrigation Co., Ltd. Convenience Store”: Would you pick up flyers on the street? - HCBBS Forum
73. 【Basic Knowledge Answers】Cavitation in centrifugal pumps. - HCBBS Forum
74. What are the concerns of college students when looking for jobs? - HCBBS Forum
75. Flow control valve, FO function - HCBBS Forum
76. HTRI heat exchanger design issues - HCBBS Forum
77. How are carbon steel and stainless steel containers for normal pressure quoted? - HCBBS Forum
78. Incident Handling 9: What are the causes of explosions in circulating fluidized bed boilers? - HCBBS Forum
79. What are the process differences between various ion membrane electrolyzers? - HCBBS Forum
80. What are the normal operating procedures for a cooling tower? - HCBBS Forum
81. Gasoline blending - HCBBS Forum
82. Built-in oil pump - HCBBS Forum
83. Issues regarding pipe blind plates - HCBBS Forum
84. Advantages of choosing cross-flow and end-flow for plate and frame filter presses - HCBBS Forum
85. 【Daily Question】Question from Issue 20150804 - HCBBS Forum
86. Selection of submersible pumps for wastewater treatment - HCBBS Forum
87. The electrodialysis current gradually increases. How to handle it, by blending with Ma Rui oil - HCBBS Forum
88. A brief analysis of the performance of photovoltaic inverters - HCBBS Forum
89. Crane calculation - HCBBS Forum
90. Range of air and gas component compositions - HCBBS Forum
91. Methods for identifying occupational disease hazard factors - HCBBS Forum
92. Where are the experts? - HCBBS Forum
93. Questions regarding the selection of end caps - HCBBS Forum
94. FST-3000 Torque Tube Level Gauge - HCBBS Forum
95. Can the hot blast stove burn properly? - HCBBS Forum
96. Fine material balance and coarse material balance - HCBBS Forum
97. Let’s chat a bit—can China succeed in bidding for the Winter Olympics? Prize for correct answers - HCBBS Forum
98. Downstream products of phosphorus trichloride - HCBBS Forum
99. Glyphosate adjuvants - HCBBS Forum
100. Basis for the formulation of safety operating procedures - HCBBS Forum