English — Forum #337 (Page 99/163)

1. Layout of exhaust gas absorption device - HCBBS Forum
2. How to calculate the vacuum material extraction flow rate - HCBBS Forum
3. Why are most self-control standards established by the Ministry of Chemical Industry? - HCBBS Forum
4. Is there no data on the flash point of dichloromethane? - HCBBS Forum
5. May I ask what the safe distance should be between the liquid oxygen storage tank and the oxygen filling room (oxygen filling station)? - HCBBS Forum
6. 【Daily Question】 【AC Version for Static Equipment...Question 11】 November 24, 2018 – True/False Multiple Choice...Enter to win a prize - HCBBS Forum
7. Formaldehyde production - HCBBS Forum
8. Are there devices similar to reflux condensers used in organic experiments in the chemical industry? - HCBBS Forum
9. Basic Process Knowledge (Multiple Choice) 20180912 - HCBBS Forum
10. The indoor temperature needs to be kept above 0°C - HCBBS Forum
11. What are some good methods to address the sedimentation issue in the transportation of solid-liquid mixtures? - HCBBS Forum
12. Issues regarding safety measures for high-risk processes (diazotization reactions) - HCBBS Forum
13. How is an upward (or downward) opening discharge valve represented in PID? - HCBBS Forum
14. Is it cost-effective to use phosphoric acid to absorb ammonia from exhaust gases in order to produce monoammonium phosphate and diammonium phosphate? - HCBBS Forum
15. In chemical engineering heat calculations, which unit – joule or calorie – has a more understandable physical meaning for calculations? - HCBBS Forum
16. Problems with the pump shut-off pressure in the pipeline - HCBBS Forum
17. How to address cavitation caused by volume competition - HCBBS Forum
18. Fundamentals of Processing Technology (Multiple Choice) 20180915 - HCBBS Forum
19. Ask for the steps or procedure for the three inspections and four fixations in chemical processing units - HCBBS Forum
20. Epichlorohydrin by hydrogen peroxide method - HCBBS Forum
21. Operation teams in small and medium-sized enterprises - HCBBS Forum
22. Regarding parallel pipelines - HCBBS Forum
23. Thoughts on the initial startup of the device - HCBBS Forum
24. Seeking help with activated carbon filters - HCBBS Forum
25. Expert, please explain the various symbols on single-line diagrams - HCBBS Forum
26. Fundamentals of Manufacturing Processes (Multiple Choice) 20180719 - HCBBS Forum
27. For reboilers with fire-tube heating, should the spacing of the equipment be determined based on the considerations for open-flame equipment? - HCBBS Forum
28. Fundamentals of Processing Technology (Multiple Choice) 20181009 - HCBBS Forum
29. Installation of indoor gutters and sump wells - HCBBS Forum
30. Purge interface issue - HCBBS Forum
31. Cracks appeared after solution treatment during normal welding of 321 stainless steel - HCBBS Forum
32. Will a screw pump clog or wear out when pumping slurry? - HCBBS Forum
33. I would appreciate it if someone knowledgeable could help upload the ACS MistXprt build 3975 software - HCBBS Forum
34. Fundamentals of Manufacturing Processes (Multiple Choice) 20180828 - HCBBS Forum
35. Actual flow path area and flow coefficient of the safety valve - HCBBS Forum
36. Pressure regulation system - HCBBS Forum
37. Metal flexible hoses and expansion joints - HCBBS Forum
38. Storage tank circulation rate and heat exchange - HCBBS Forum
39. Fundamentals of Manufacturing Processes (Multiple Choice) 20180813 - HCBBS Forum
40. Analysis of abnormal operation of the drain valve after the heat exchanger; steam superheating is suspected to be the cause - HCBBS Forum
41. Initial startup heating - HCBBS Forum
42. Distillation and rectification - HCBBS Forum
43. What is used to separate methanol and MMA? The ratio in the solution is methanol:MMA:H2O = 75:1:1 - HCBBS Forum
44. Elliptical heads are joined together; what is the minimum width for such joints? - HCBBS Forum
45. Process pipeline intersection - HCBBS Forum
46. Chemical solution process - HCBBS Forum
47. How to read the Txy phase diagram for binary systems - HCBBS Forum
48. Do you know anything about the startup and daily operations for Class A storage tanks for flammable liquids? - HCBBS Forum
49. Basic Process Knowledge (Multiple Choice) 20180819 - HCBBS Forum
50. Suggestions for product shipping packaging boxes - HCBBS Forum
51. Why - HCBBS Forum
52. How to calculate bend pipe dimensions - HCBBS Forum
53. Fundamentals of Manufacturing Processes (Multiple Choice) 20180730 - HCBBS Forum
54. What is an axial force, and in which direction does it point? - HCBBS Forum
55. Common repair methods for damaged reaction kettles – Practicality is what truly matters! - HCBBS Forum
56. Flowchart consultation - HCBBS Forum
57. Questions regarding pipeline pressure regulation - HCBBS Forum
58. How do I write a pressure testing package? ? How to draw a pressure testing system diagram? Are there any standards to refer to? - HCBBS Forum
59. I seek advice from experts - HCBBS Forum
60. Regarding the issue of the outlet concentration in exhaust gas condensation treatment - HCBBS Forum
61. Looking for drawings and related materials for Oslo evaporation crystallizers, preferably with PID - HCBBS Forum
62. Regarding the design pressure of pipes for safety valves and steam traps - HCBBS Forum
63. Glycolaldehyde is hydrogenated to ethylene glycol - HCBBS Forum
64. Can’t increase the evaporation concentration of caustic soda? What are the reasons? - HCBBS Forum
65. Can it be downloaded again after being downloaded once from the attachment? - HCBBS Forum
66. Discussion on the layout of surface flares for hydrogenation projects - HCBBS Forum
67. Fundamentals of Manufacturing Processes (Multiple Choice) 20181114 - HCBBS Forum
68. Control valve bypass - HCBBS Forum
69. How to reduce the temperature of the turbid circulation return water? - HCBBS Forum
70. How to calculate the instrument air and nitrogen sealing volume? - HCBBS Forum
71. I would like to ask the experts: What is causing the crystallization that appears in the vent pipe of the dimethyl phosphite tank? - HCBBS Forum
72. Unable to find the cause of problems with the top circulation in delayed coking - HCBBS Forum
73. What to do if the ammonia content in circulating hydrogen is too high? - HCBBS Forum
74. Tar-ammonia separation device - HCBBS Forum
75. Basic Process Knowledge (Multiple Choice) 20180703 - HCBBS Forum
76. Does a multi-stage compressor offer higher compression efficiency? ! - HCBBS Forum
77. The owner of the design contract changed its company name and requested a new contract signing – what’s the trick behind this? - HCBBS Forum
78. Basic Process Knowledge (Multiple Choice) 20180821 - HCBBS Forum
79. 【HVAC Version】Daily Question 20180617 - HCBBS Forum
80. On-site, some pipelines have static bypass wires installed between their flanges; then, are bypass wires also necessary to be designed between those flanges? - HCBBS Forum
81. GB18218-2014 Identification of Major Hazard Sources for Hazardous Chemicals - HCBBS Forum
82. Pressure in the remaining furnace rises after shutdown of the reformation four-in-one furnace - HCBBS Forum
83. Fundamentals of Processing Technology (Multiple Choice) 20180904 - HCBBS Forum
84. I would like to ask: for reducing tees, should the wall thickness be determined based on that of the larger end or the smaller end? Is there any table for this? - HCBBS Forum
85. May I ask if pipelines can be installed on the ground surface after digging trenchs for underground construction? - HCBBS Forum
86. What criteria are used to determine the acceptance standard for nitrogen purging in hydrogen-rich systems? - HCBBS Forum
87. Why do food factories and health product factories need to obtain GMP certification? - HCBBS Forum
88. Seeking help with micro-pulverization equipment for crushing active pharmaceutical ingredients - HCBBS Forum
89. Design of the backup pump to prevent backflow - HCBBS Forum
90. Who is the responsible department for process changes? - HCBBS Forum
91. Process package, engineering design - HCBBS Forum
92. Fundamentals of Manufacturing Processes (Multiple Choice) 20181124 - HCBBS Forum
93. Which aspect of the catalyst industry is developing well currently? - HCBBS Forum
94. It features a stirred slurry bed reactor with steam heating coils inside; how to cool it down when the system is shut down? - HCBBS Forum
95. Nitrogen filling issue in hydrochloric acid tank - HCBBS Forum
96. How to choose antifreeze for industrial chiller brands? - HCBBS Forum
97. Who has the material data sheet for Taiyuan Iron and Steel’s stainless steel round bars? Please share it - HCBBS Forum
98. Solubility of sodium formate in methanol - HCBBS Forum
99. Seek help with the issue of heat exchanger calculation in the settings of the HGT20570 safety valve - HCBBS Forum
100. Ethylbenzene alkylation and dealkylation reactions in the styrene plant - HCBBS Forum