English — Forum #337 (Page 108/163)

1. What is the principle behind hierarchical control? How to draw a PID? - HCBBS Forum
2. Is there any rule stating that manholes cannot be installed on the side of tanks that hold highly hazardous substances or flammable liquids? - HCBBS Forum
3. [Mechanical Equipment Technology Edition] Daily Question 20180704: Refrigeration Systems – Refrigeration Parameters (15) - HCBBS Forum
4. Cross-flow filtration clear liquid flow rate - HCBBS Forum
5. What is Dingtongoxime? Is dingtongoxime toxic? - HCBBS Forum
6. SRU torch - HCBBS Forum
7. Arguing – take pressure pipelines as an example; give a clear definition - HCBBS Forum
8. Aluminum trichloride solution - HCBBS Forum
9. May I ask whether Class A and Class B liquid storage tanks, regardless of their volume, can be placed inside a factory building? - HCBBS Forum
10. Does the application of a split-control system impose any requirements on the diameters of the inlet and outlet pipes? - HCBBS Forum
11. Should the bladder accumulator of PLAN 53B be placed before or after the cooler? - HCBBS Forum
12. How does one seal a well with oil that is heavier than water? - HCBBS Forum
13. Looking for the SPS (Simulation Software for Long-Distance Oil and Gas Pipelines) installation package - HCBBS Forum
14. Design of 320m3 hydrochloric acid storage tank - HCBBS Forum
15. Regarding water pressure calculation - HCBBS Forum
16. Does anyone know which pump is suitable for transporting dichloromethane? - HCBBS Forum
17. Have you all ever encountered the confusion of a chemical industry worker? - HCBBS Forum
18. Seeking help with process name - HCBBS Forum
19. A calculation program for VOC treatment using RCO and RTO processes, including mass balance and energy balance - HCBBS Forum
20. Nitrochlorobenzene - HCBBS Forum
21. Residence time in the buffer tank before the pump - HCBBS Forum
22. 【Mechanical Equipment Technology Edition】Daily Question 20180703: Refrigeration Systems — Refrigeration Parameters (14) - HCBBS Forum
23. What happens when the pipeline losses are greater than the head of the centrifugal pump? - HCBBS Forum
24. Calculations regarding heat exchangers - HCBBS Forum
25. For the external coil of the equipment, cooling water and steam are used alternately to control the equipment’s temperature; what should be noted during operation? - HCBBS Forum
26. Calculate the amount of filler pipeline - HCBBS Forum
27. Differences between HPPO’s current process, BASF, and Evonik - HCBBS Forum
28. Seeking help with SW ethylene-related issues - HCBBS Forum
29. May I ask whether the discharge capacity of the safety valve for Class A liquid storage tanks is based on the extreme fire conditions or the normal operating pressure conditions? - HCBBS Forum
30. What does \"pressure control valve and temperature interlock\" mean? - HCBBS Forum
31. How to calculate the pressure loss in centrifugal pump pipelines - HCBBS Forum
32. Water absorption rate of molecular sieve - HCBBS Forum
33. Corporate employee skill competitions showcase expertise - HCBBS Forum
34. What is the temperature of dichloroethane vapor at around 140 degrees Celsius after being condensed using circulating water? ? - HCBBS Forum
35. In three-effect evaporation, how to determine the height of the U-shaped bend where the second-effect condensed water enters the third-effect shell side? - HCBBS Forum
36. Weight calorific value and volume calorific value. . . . It’s a bit messy; I need help. - HCBBS Forum
37. Setting of flame arrester differential pressure gauge on fuel gas pipeline - HCBBS Forum
38. Disposal of residual yellow phosphorus in used phosphorus trichloride reaction vessels - HCBBS Forum
39. Compressor circuit control - HCBBS Forum
40. What determines the flow velocity of different media in pipes? - HCBBS Forum
41. Sampling design for flammable liquids - HCBBS Forum
42. Which standard specifies the construction methods for explosion-proof structures? - HCBBS Forum
43. How do you calculate bubble point and dew point based on composition and pressure? - HCBBS Forum
44. Screw refrigeration compressor unit - HCBBS Forum
45. How much air is needed to completely burn 1 kg of dry firewood? - HCBBS Forum
46. 【HVAC Version】Daily Question 20180201 - HCBBS Forum
47. How to calculate the initial velocity in a free-fall pipeline - HCBBS Forum
48. 【HVAC Version】Daily Question 20180409 - HCBBS Forum
49. Basic Process Knowledge (Multiple Choice) 20180418 - HCBBS Forum
50. Safe distance between laboratories and storage tanks - HCBBS Forum
51. Why is ammonia from SCR denitration mixed with air? - HCBBS Forum
52. [Mechanical Equipment Technology Edition] Daily Question 201801029: Common Faults in Refrigeration Systems (8.5) - HCBBS Forum
53. 【Mechanical Equipment Technology Edition】Daily Question 20180305: Common Faults in Refrigeration Systems (9.11) - HCBBS Forum
54. [Mechanical Equipment Technology Edition] Daily Question 201805010: Refrigeration Systems – Refrigeration Equipment (1) - HCBBS Forum
55. HTRI ---- tube length and heat transfer coefficient - HCBBS Forum
56. 【HVAC Version】Daily Question 20180602 - HCBBS Forum
57. How is the maximum allowable inner diameter of the brace tube determined? - HCBBS Forum
58. What is dimethylformamide? - HCBBS Forum
59. What is the production process for **furan at BASF? - HCBBS Forum
60. How to estimate the diameter of medical oxygen pipelines - HCBBS Forum
61. 【HVAC Version】Daily Question 20180517 - HCBBS Forum
62. Approaches and steps for process package development - HCBBS Forum
63. 【HVAC Version】Daily Question 20180531 - HCBBS Forum
64. Cylinder flow rate - HCBBS Forum
65. Registered safety engineers in 2018 are set to experience a \"second spring\"” - HCBBS Forum
66. Fundamentals of Manufacturing Processes (Multiple Choice) 20180209 - HCBBS Forum
67. Can chlorine interfere with hydrogen chloride alarms? - HCBBS Forum
68. I would like to ask about the types of closed sampling devices and their applications - HCBBS Forum
69. What does the highlighted part in this PFD represent? - HCBBS Forum
70. Seeking help with the process route for R134 - HCBBS Forum
71. Issues related to medium treatment in process pipelines - HCBBS Forum
72. 2018·1 Reward HAICHUAN Coins Allocation Plan for the Process Division - HCBBS Forum
73. Seeking help from experts to solve a small problem - HCBBS Forum
74. 【HVAC Version】Daily Question 20180522 - HCBBS Forum
75. Comparison of dichloroethane cracking technologies - HCBBS Forum
76. Membrane separation of isopropyl alcohol to 99.5% - HCBBS Forum
77. [Mechanical Equipment Technology Edition] Daily Question 20180408: Screw Refrigeration Compressor Oil Circuit System (1) - HCBBS Forum
78. Why is an interlock shutdown triggered when the air pressure entering the heating furnace is low? - HCBBS Forum
79. For standard fiberglass storage tanks, are the pipe connections also predetermined? - HCBBS Forum
80. 【Traffic Rules, One Question per Day】20180408--Welcome to the travel edition of \"Spring Has Arrived in Haichuan\" - HCBBS Forum
81. Basic Process Knowledge (Multiple Choice) 20180610 - HCBBS Forum
82. What is formed when esters are oxidized? - HCBBS Forum
83. Fundamentals of Manufacturing Processes (Multiple Choice) 20180423 - HCBBS Forum
84. Is the air separation design designed for explosion-proof or non-explosion-proof use? - HCBBS Forum
85. What are the requirements of boilers regarding the quality of feedwater and boiler water? - HCBBS Forum
86. I need everyone’s help and guidance regarding the crystallization of zinc chloride using multi-effect evaporators - HCBBS Forum
87. Process flow diagram for the production of cyclohexanol via the hydration of cyclohexene - HCBBS Forum
88. Basic Process Knowledge (Multiple Choice) 20180309 - HCBBS Forum
89. Isophthaloyl chloride turns red in color - HCBBS Forum
90. Is there any particular consideration regarding whether the equipment’s outlet pressure gauge should be placed in front of or behind the outlet valve? - HCBBS Forum
91. Internet-famous snowflake cake (my version) - HCBBS Forum
92. Expert advice on torch construction issues - HCBBS Forum
93. Composition of water after exhaust gas denitration - HCBBS Forum
94. Why are there no books on molecular orbital theory here? - HCBBS Forum
95. Which standard provides information on material properties? I want to find the density of air at 7 MPa; the temperature isn’t exactly clear yet, so I’ll use 40 degrees for now - HCBBS Forum
96. Fundamentals of Processing Technology (Multiple Choice) 20180312 - HCBBS Forum
97. Corn-based alcohol has a high acidity level - HCBBS Forum
98. I am consulting the manufacturers of equipment for producing calcium chloride dihydrate; there is a 30% calcium chloride solution that needs to be treated - HCBBS Forum
99. TSGD7005-2018 Rules for Periodic Inspection of Pressure Piping — Industrial Piping - HCBBS Forum
100. Seeking advice on steam condensation recovery in heat exchangers - HCBBS Forum