English — Forum #337 (Page 131/163)

1. 【HVAC Version】Daily Question 20171109 - HCBBS Forum
2. There are emulsifiers; are there also demulsifiers? Or a solvent that disrupts the miscible solvents? - HCBBS Forum
3. [Mechanical Equipment Technology Edition] Daily Question 20171123 – Refrigeration Equipment - HCBBS Forum
4. 【HVAC Version】Daily Question 20171207 - HCBBS Forum
5. High-pressure lubricating oil hydrogenation - HCBBS Forum
6. 【HVAC Version】Daily Question 20171101 - HCBBS Forum
7. Basic Process Knowledge (Multiple Choice) 20180107 - HCBBS Forum
8. Air-pressure nitrogen PSA - HCBBS Forum
9. Can the content and peaks be measured in both the liquid phase and the gas phase? What’s the difference? - HCBBS Forum
10. Physicochemical properties of monobutyl maleate and its boiling point under negative pressure - HCBBS Forum
11. Negative pressure control of the evaporation flash chamber in downstream flow - HCBBS Forum
12. The three classic methods for lubricating oil - HCBBS Forum
13. 【Mechanical Equipment Technology Edition】Daily Question 20171221: Common Faults in Refrigeration Systems (2.2) - HCBBS Forum
14. [Mechanical Equipment Technology Edition] Daily Question 20171212: Refrigeration Equipment (Evaporator) - HCBBS Forum
15. Which company is responsible for the natural gas conversion and modification? - HCBBS Forum
16. What are the ways to obtain low-cost drying gas during the production process? - HCBBS Forum
17. When is the SPEED REMOTE CONTROL signal sent from DCS to MCC generally used? - HCBBS Forum
18. Fundamentals of Manufacturing Processes (True/False Questions) 20171123 - HCBBS Forum
19. Basic Process Knowledge (True/False Questions) 20171024 Reply – Note: Hide it - HCBBS Forum
20. Please ask the experts for guidance - HCBBS Forum
21. What process package is used for propylene dehydrogenation at Shenzhen Juzhengyuan? - HCBBS Forum
22. Break the vacuum - HCBBS Forum
23. How to remove water from the vacuum tank - HCBBS Forum
24. Is the flow velocity at the wall zero? ! - HCBBS Forum
25. When the fan cannot withstand the resistance loss, does the current decrease, or does the motor get damaged? ! - HCBBS Forum
26. Can a compressor with variable frequency operate at the first critical speed for an extended period of time? - HCBBS Forum
27. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (September 27) - HCBBS Forum
28. May I ask, when a mesh mist eliminator is used to treat air containing 40°C saturated water vapor, what is the vapor content at the outlet? ? - HCBBS Forum
29. How is long-distance lime pipeline transportation carried out? ? Is there a way? - HCBBS Forum
30. Desulfurization Process Calculation Sheet - HCBBS Forum
31. [Mechanical Equipment Technology Edition] Daily Question 20171027: Structural components of energy regulation in screw compressors - HCBBS Forum
32. When cooled in the air, under natural conditions, how is heat transfer calculated? ! - HCBBS Forum
33. Seek a template for technical improvement plans - HCBBS Forum
34. Basic Process Knowledge (True/False Questions) 20170920 - HCBBS Forum
35. Fire water reception - HCBBS Forum
36. Regarding the issue of pipe flow velocity - HCBBS Forum
37. When the wax oil hydrorefining unit is shut down urgently and the emergency pressure relief valve activates, how should the circulator and the fresh hydrogen compressor be operated? - HCBBS Forum
38. How to use high-pressure superheated steam - HCBBS Forum
39. Hydrogen production technology via sodium borohydride hydrolysis - HCBBS Forum
40. Finding out how to add glacial acetic acid into the reaction vessel is the next step in producing acetates, involving the addition of liquid alkali - HCBBS Forum
41. Should the standard specifications for as-built drawings be the older ones used in the detailed design, or the latest version? - HCBBS Forum
42. How to address wastewater in acrylic acid production - HCBBS Forum
43. Seeking advice on the design location of the safety valve for the cold medium outlet of the carburetor - HCBBS Forum
44. 10.16 One question per day – multiple-choice questions; a reward is given for every correct answer - HCBBS Forum
45. How to set the operating pressure of the torch separator tank - HCBBS Forum
46. Issue with isolation valves on pipes for the inflow and outflow of flammable liquids - HCBBS Forum
47. Downflow film condensation cannot be achieved in this tube - HCBBS Forum
48. I have questions as a beginner in storage and transportation design - HCBBS Forum
49. Frosting problem on the compressor of the refrigeration unit? - HCBBS Forum
50. Phosphoric acid process PID diagram - HCBBS Forum
51. 10.31--bak version daily topics - HCBBS Forum
52. 【Questions about PID drawings】What are the requirements for the straight pipe section for flow regulation? - HCBBS Forum
53. Condensate recovery - HCBBS Forum
54. On the selection of the overpressure ratio for safety valves in fire conditions - HCBBS Forum
55. Allowable overpressure for the emergency pressure relief manhole of atmospheric and slightly positive pressure vessels - HCBBS Forum
56. An example of wall thickness calculation, but there’s still a small issue at the end - HCBBS Forum
57. 10.26--bak version daily topics - HCBBS Forum
58. How to represent variable-frequency motors in a PID diagram - HCBBS Forum
59. Alcohol distillation process - HCBBS Forum
60. Regarding the emergency shutoff setup for liquid ammonia storage tanks - HCBBS Forum
61. Fundamentals of Processing Technology (Multiple Choice) 20171216 - HCBBS Forum
62. Is the calculation of the C value in the figure correct? ? How was the formula derived? ? - HCBBS Forum
63. 【HVAC Version】Daily Question 20180104 - HCBBS Forum
64. 【HVAC Version】Daily Question 20171029 - HCBBS Forum
65. What will happen to isobutylene, methanol, and the facilities after MTBE is banned? - HCBBS Forum
66. Design of hydrogen vent pipe - HCBBS Forum
67. One Question per Day----------Multiple-choice Questions on Basic Process Knowledge (September 21) - HCBBS Forum
68. Fundamentals of Manufacturing Processes (True/False Questions) 20170921 - HCBBS Forum
69. Calculation of safety valves in the detailed engineering design phase - HCBBS Forum
70. Changes in pressure after the foam disappears in a sealed container - HCBBS Forum
71. How to improve reading permissions - HCBBS Forum
72. Fundamentals of Manufacturing Processes (Multiple Choice) 2018018 - HCBBS Forum
73. What are the components of the exhaust gas generated by the oil-water separator? What is the generation rate (kg/m3)? - HCBBS Forum
74. The definition and fate of various types of \"water\" in industry! - HCBBS Forum
75. 30% hydrochloric acid is used in the reaction tank – is it really necessary to install a toxic gas alarm? - HCBBS Forum
76. Sharing winter anti-freezing experiences: Things that are hard to anticipate - HCBBS Forum
77. How high can nitrogen lift a liquid in a vertical pipe? - HCBBS Forum
78. 【Mechanical Equipment Technology Edition】Daily Question 201801023: Common Faults in Refrigeration Systems (8.1) - HCBBS Forum
79. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (September 30) - HCBBS Forum
80. EOEG device - HCBBS Forum
81. How to install a rotameter at the outlet of a carbon dioxide cylinder? - HCBBS Forum
82. 【HVAC Version】Daily Question 20180102 - HCBBS Forum
83. Hydrogenation books - HCBBS Forum
84. I’d like to learn about indirect alkylation technology! - HCBBS Forum
85. 9.28 Daily Question – Multiple-choice; a reward is given for every correct answer - HCBBS Forum
86. How is online monitoring of salt and nitrate co-production achieved? - HCBBS Forum
87. How to achieve automated control of the effective chlorine content in hypochlorite production - HCBBS Forum
88. Calculation of pressure drop in conical filters - HCBBS Forum
89. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (November 2) - HCBBS Forum
90. Can two different types of gas be transported through the same pipeline? - HCBBS Forum
91. Analysis of metal temperature difference differences - HCBBS Forum
92. Fundamentals of Processing Technology (Multiple Choice) 2018017 - HCBBS Forum
93. 【HVAC Version】Daily Question 20171203 - HCBBS Forum
94. Fundamentals of Processing Technology (Multiple Choice) 2018019 - HCBBS Forum
95. 【HVAC Version】Daily Question 20171123 - HCBBS Forum
96. Cavities were observed in the fire resistance limit test of indoor intumescent fireproof coatings - HCBBS Forum
97. The compaction phenomenon of catalysts - HCBBS Forum
98. How is the pipe diameter for the torch line determined? - HCBBS Forum
99. The disproportionation method yields pentanediol - HCBBS Forum
100. [Mobile Equipment Technology Edition] Daily Question 20171128 Refrigeration Equipment (2) - HCBBS Forum