English — Forum #723 (Page 456/642)

1. I'm back. How are you all! - HCBBS Forum
2. Errors between DCS control system and instruments - HCBBS Forum
3. Differences between suspected occupational diseases and occupational contraindications - HCBBS Forum
4. Questions about the tail condenser - HCBBS Forum
5. How to adjust the light gasoline extraction ratio in the fractionation tower (for V-series blended gasoline produced by gasoline hydrodesulfurization units) - HCBBS Forum
6. Model of the steam trap on the pipeline - HCBBS Forum
7. Soldering process qualification - HCBBS Forum
8. Does a single 40m3 formaldehyde tank require a fire dike? - HCBBS Forum
9. Inspection for blockage in the U-tubes of heat exchangers - HCBBS Forum
10. Reasons for the inward contraction of nozzles in water-coal slurry gasification - HCBBS Forum
11. One question per day (1112) - HCBBS Forum
12. CENTUM VP cannot read the GPS clock synchronization time - HCBBS Forum
13. 20151115 Daily Question - HCBBS Forum
14. What methods can be used to fully recover the concentrated water generated after two-stage membrane treatment of industrial wastewater? - HCBBS Forum
15. How to insulate the water seal of a 10W square wet-type spiral gas holder in winter? - HCBBS Forum
16. Planned maintenance management for high-pressure ash water pumps - HCBBS Forum
17. Connection method of exhaust gas to chimney pipeline - HCBBS Forum
18. Five methods for identifying potential accident hazards - HCBBS Forum
19. 【Daily Question】11.9 Multiple-choice question: The reason why oils lose their fluidity at low temperatures is: ( ) - HCBBS Forum
20. Regarding hydrogenation units - HCBBS Forum
21. Is it promising for women to work in the quality control department? - HCBBS Forum
22. What certificates can I obtain? Thank you! - HCBBS Forum
23. Teach you how to easily distinguish between industrial salt and table salt - HCBBS Forum
24. One question per day (1114) - HCBBS Forum
25. Sell a batch of ion exchange membranes at an ultra-low price - HCBBS Forum
26. Safety precautions for outsiders entering the company - HCBBS Forum
27. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151107 issue - HCBBS Forum
28. Is there a filter for transporting delayed coking acidic water outside? - HCBBS Forum
29. MBR enhanced nitrogen and phosphorus removal technology - HCBBS Forum
30. What details should be considered in technical negotiations with suppliers for high-temperature oil pumps - HCBBS Forum
31. What is the heat flux density of circulating cooling water? - HCBBS Forum
32. How is the spacing of the reinforcement bars on the vault plate of a storage tank calculated and determined? - HCBBS Forum
33. What are the differences in usage between common containers and pressure vessels? - HCBBS Forum
34. What are the policies and measures in my country to control acid rain? - HCBBS Forum
35. Analyzer - HCBBS Forum
36. Periodic variation of circulating water pump current - HCBBS Forum
37. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151111 issue - HCBBS Forum
38. Fire resistance rating of lightweight steel structural panel houses - HCBBS Forum
39. 【Daily Question】Question from Issue 20151113 - HCBBS Forum
40. 【Daily Question】Question 41: Test question from issue 20151113 (Repeat +2)； For the other +3) - HCBBS Forum
41. Who can provide a demonstration animation of low-pressure steam generator sets? - HCBBS Forum
42. How to design a cooling tower? - HCBBS Forum
43. Briefly describe the inverted lifting method for segmental lifting of tower equipment? - HCBBS Forum
44. Pneumatic valve with solenoid valve - HCBBS Forum
45. The delivery accuracy of Rosemount mass flowmeters is affected by temperature changes - HCBBS Forum
46. Use of mobile phones in chemical enterprises - HCBBS Forum
47. 【Popular Science on Polymers and Materials】--014 Aging of Polymer Materials + zdl1966 - HCBBS Forum
48. 【Daily Question】11.15 Multiple-choice question: For typical hydrogenation units, operators increase the depth of the hydrogenation refining reaction - HCBBS Forum
49. What are the hazards of dirt in the cooling water system? - HCBBS Forum
50. What measures should be taken when microorganisms are damaged? - HCBBS Forum
51. Can liquid nitrogen washing be performed after the NHD process? - HCBBS Forum
52. 【Daily Question】Chemical Engineering Principles 227: Countercurrent Absorption Tower (November 8) - HCBBS Forum
53. Looking for DWG modules or drawings for shell and tube heat exchangers - HCBBS Forum
54. Looking for configuration software from Emerson, Honeywell, or Conixion - HCBBS Forum
55. Regarding the temperature control issue of DAVY - HCBBS Forum
56. Under what circumstances does an electric valve get damaged? - HCBBS Forum
57. What are the requirements for catalyst loading? - HCBBS Forum
58. [Warning Topic] Hazardous materials accidents that occurred in November throughout history - HCBBS Forum
59. Deaerator steam injection issue - HCBBS Forum
60. It is difficult to sustain large-scale expansion of local refining facilities; a more refined development model is gaining favor - HCBBS Forum
61. I need help: the raw materials for food additives require dichloromethane for dissolution - HCBBS Forum
62. Frequency of oil product analysis in refineries - HCBBS Forum
63. How can the formation of sludge cakes in reclaimed water treatment be reduced? - HCBBS Forum
64. Which episode of the \"Mud Battle\" episodes in Season 3 of Running Man is the best, from the perspective of the HaiChuan Irrigation Co., Ltd. convenience store? - HCBBS Forum
65. Do you know the basics about safety helmets? - HCBBS Forum
66. Are there any specific anti-corrosion and rust prevention measures to stop control valves from rusting? - HCBBS Forum
67. Original – Lockfight Scrap Discharge Animation - HCBBS Forum
68. Are there any boiler manufacturers that have worked on projects abroad? - HCBBS Forum
69. Civil Engineering Structure Discussion Area ----【Daily Question】Question from the 20151112 issue - HCBBS Forum
70. Selection of flow rate for the vent silencer - HCBBS Forum
71. How to meet the requirements for an explosion-proof control room - HCBBS Forum
72. What are the structural characteristics of the main components of an ammonia synthesis tower? - HCBBS Forum
73. Building Design Code 3.4.6 Equipment for Chemically Flammable Substances - HCBBS Forum
74. A small detail that is easily overlooked during assembly after pump repair. - HCBBS Forum
75. How to register or affiliate with an installation company - HCBBS Forum
76. Question regarding the liquid level control standards for Shell slag ponds? - HCBBS Forum
77. Is it possible to switch from a chemical engineering major to HVAC? - HCBBS Forum
78. One post per day - HCBBS Forum
79. What are the principles of choosing strategies? - HCBBS Forum
80. 【Daily Question】Question from Issue 20151105 - HCBBS Forum
81. Screw air compressors and air-bearing compressors - HCBBS Forum
82. What is a twin-rotor Roots flow meter? - HCBBS Forum
83. Underground space - HCBBS Forum
84. Theoretical water output per hour during methanol temperature-raising reduction - HCBBS Forum
85. What should be considered when designing a closed-loop circulating cooling water system? - HCBBS Forum
86. Seek technical documentation and operational information on 60,000 Nm³/h air separation units for internal compression applications - HCBBS Forum
87. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 218 - HCBBS Forum
88. Valve - HCBBS Forum
89. It is alkaline and the medium contains metal slag; what kind of pump is suitable? - HCBBS Forum
90. I’m asking if anyone here has photos of the chlor-alkali evaporation process - HCBBS Forum
91. 【Popular Science Tips on Polymers and Materials】--017 Popular Science Tips on the Materials Used in Baby Diapers + ljtjbx - HCBBS Forum
92. Has anyone worked on a forced-circulation reboiler? Could you give some advice? - HCBBS Forum
93. 【Popular Science Tips on Polymers and Materials】--021 Popular Science Tips on the Materials Used in Raincoats + ljtjbx - HCBBS Forum
94. Centrifugal compressor - HCBBS Forum
95. Is it possible to modify PP material into PPR material? - HCBBS Forum
96. A small question regarding the catalog of special equipment - HCBBS Forum
97. Commissioning of the acetylene hydrogenation reactor - HCBBS Forum
98. What will future simulation software look like? - HCBBS Forum
99. Water pump fault diagnosis and remedial measures - HCBBS Forum
100. Does the Eastern Furnace (SE) have maintenance space similar to that of the Shell furnace? - HCBBS Forum