English — Forum #337 (Page 113/163)

1. [Mechanical Equipment Technology Edition] Daily Question 201803016: Screw Refrigeration Compressors—Overview (2) - HCBBS Forum
2. Treatment process for cyanide-containing tailings - HCBBS Forum
3. Are there any standard specifications for PPH pipe materials in terms of dimensions, tees, and other aspects? ? - HCBBS Forum
4. 【HVAC Version】Daily Question 20180327 - HCBBS Forum
5. Regarding heating in a single-pass heat exchanger - HCBBS Forum
6. Vacuuming the refrigeration system - HCBBS Forum
7. [Appreciation of Famous Artists] Chen Chun's "Pine and Stone Xuanhua Pictures" of the Ming Dynasty--Welcome to participate in the voting for Haichuan's top ten members - HCBBS Forum
8. What software is used for heat balance calculations in heat exchangers? - HCBBS Forum
9. Find the stress formula for the pipeline downstream after the safety valve activates - HCBBS Forum
10. Can valves with a pressure rating of over 25 kg still be lined with rubber or plastic? ? - HCBBS Forum
11. What safety control interlocks should be considered in the amination process? - HCBBS Forum
12. 【Mechanical Equipment Technology Edition】Daily Question 201804013: Common Faults of Screw Refrigeration Compressors (2) - HCBBS Forum
13. Regarding the classification of fire hazards, those who know about it please come in - HCBBS Forum
14. How is the size of waste heat boilers determined? - HCBBS Forum
15. Determination of alarm values and interlock values for instruments and equipment - HCBBS Forum
16. Discussion on the scheme of returning chilled water directly to the inlet of the circulation pump - HCBBS Forum
17. Fundamentals of Manufacturing Processes (Multiple Choice) 20180321 - HCBBS Forum
18. What is steam used for in the desalinated water system? - HCBBS Forum
19. 【Mechanical Equipment Technology Edition】Daily Question 201803020: Screw Refrigeration Compressors — Basic Structure and Characteristics (2) - HCBBS Forum
20. 【HVAC Version】Daily Question 20180320 - HCBBS Forum
21. Seeking the formula for calculating the thermal efficiency of a heating furnace - HCBBS Forum
22. Systematic discussion on hydrogen production methods - HCBBS Forum
23. Fundamentals of Processing Technology (Multiple Choice) 20180311 - HCBBS Forum
24. Collectible Edition of \"Introduction to Power Plant Chemistry\" - HCBBS Forum
25. Discussion on evaporation issues - HCBBS Forum
26. Are there any websites similar to Gongbiao.com? It’s too troublesome to access Gongbiao.com - HCBBS Forum
27. Do any of you know the shipping code for Guan Yi plugins? ? - HCBBS Forum
28. Can a formaldehyde storage tank be made of fiberglass-reinforced plastic? - HCBBS Forum
29. 【Daily Question】Pump Equipment Technical Exchange Edition 20180206 - HCBBS Forum
30. The exhaust gas contains HCl and HBr; should the water amount required for absorption be calculated separately for each? ! - HCBBS Forum
31. Some questions and doubts regarding volumetric flow rate - HCBBS Forum
32. Where does the vibration in air conditioning units come from? - HCBBS Forum
33. What is the ratio of methanol to water vapor in the gas phase at 40°C for a 10% methanol aqueous solution? - HCBBS Forum
34. Calculation of the maximum flow rate for steam pipelines - HCBBS Forum
35. Fluid state inside the heat exchanger - HCBBS Forum
36. What category does compressor lubricant fall into in terms of fire hazard classification? - HCBBS Forum
37. Calcium carbide fire - HCBBS Forum
38. On the iron-molybdenum method for formaldehyde - HCBBS Forum
39. How is internal heating indicated in a PID diagram? - HCBBS Forum
40. Basic Process Knowledge (Multiple Choice) 20180611 - HCBBS Forum
41. I want to buy a air pump with a flow rate of 450 L/min; could anyone recommend one? The flow rate should be as stable as possible. - HCBBS Forum
42. Discussion on the division of process piping tasks in design institutes - HCBBS Forum
43. On-site methods for sealing leaks such as pipeline flanges and valves - HCBBS Forum
44. To convert a nitrate solution at 130 degrees, 94% concentration with a pH of 6 into a solution with a pH of 5, how much 57% nitric acid is needed? - HCBBS Forum
45. Look at the picture – what kind of processing equipment is it, and what is its specific purpose? - HCBBS Forum
46. Basic Process Knowledge (Multiple Choice) 20180612 - HCBBS Forum
47. Discussion on the operations for putting heat exchangers into use and taking them out of use - HCBBS Forum
48. Discussion on the similarities and differences, advantages and disadvantages of various heating methods for reaction vessels, as well as their principles - HCBBS Forum
49. What are the mature technologies for coal-based acicular coke? - HCBBS Forum
50. Differences between ammonia and propane as refrigerants - HCBBS Forum
51. 【HVAC Version】Daily Question 20180216 - HCBBS Forum
52. Basic Process Knowledge (Multiple Choice) 20180210 - HCBBS Forum
53. Fundamentals of Manufacturing Processes (Multiple Choice) 20180428 - HCBBS Forum
54. Want to purchase a refrigeration unit - HCBBS Forum
55. In what applications are thermal resistors and thermocouples used respectively? - HCBBS Forum
56. [Mechanical Equipment Technology Edition] Daily Question 201805023: Refrigeration Systems – Refrigeration Equipment (4) - HCBBS Forum
57. When using the plate height method to determine the height of the packing layer, is it necessary to subtract one from the calculation of the theoretical number of stages? - HCBBS Forum
58. Heat exchange area of the flash tank - HCBBS Forum
59. Shouldn’t the initial pressure for the filtration operation not be too high? - HCBBS Forum
60. Fundamentals of Manufacturing Processes (Multiple Choice) 20180506 - HCBBS Forum
61. [Mechanical Equipment Technology Edition] Daily Question 201805003: Common Faults of Screw Refrigeration Compressors (6) - HCBBS Forum
62. Our fixed-bed reactor is clogged. . . - HCBBS Forum
63. How to arrange the shock absorption grooves on the compressor testing platform - HCBBS Forum
64. Need help with some chemical industry abbreviations - HCBBS Forum
65. Basic Process Knowledge (Multiple Choice) 20180306 - HCBBS Forum
66. Blower outlet pressure when the blower is turned off - HCBBS Forum
67. Basic Process Knowledge (Multiple Choice) 20180203 - HCBBS Forum
68. As a chemical process engineering engineer, what should be the key areas of focus for learning in a design institute? - HCBBS Forum
69. Fundamentals of Processing Technology (Multiple Choice) 20180602 - HCBBS Forum
70. How is the fee for the civil engineering design of chemical processing equipment determined? - HCBBS Forum
71. 【HVAC Version】Daily Question 20180523 - HCBBS Forum
72. On the safety discharge device for atmospheric pressure pyrolysis furnaces - HCBBS Forum
73. Process issues regarding caprolactam. - HCBBS Forum
74. What are the typical pressure and temperature of ethylene in the pipes of an ethylene plant? - HCBBS Forum
75. 【HVAC Version】Daily Question 20180322 - HCBBS Forum
76. Fundamentals of Processing Technology (Multiple Choice) 20180325 - HCBBS Forum
77. What value should be used for the K factor when calculating the heat exchange area for condensing 0.3 MPA steam using a graphite heat exchanger? - HCBBS Forum
78. What's the name of this thing? It has to be exactly the same. - HCBBS Forum
79. Iron molybdenum formaldehyde - HCBBS Forum
80. Fundamentals of Manufacturing Processes (Multiple Choice) 2018023 - HCBBS Forum
81. I’d like to ask about the azeotropes of R134a and R115 – those substances that readily form azeotropes with R134a - HCBBS Forum
82. 【HVAC Version】Daily Question 20180220 - HCBBS Forum
83. 【HVAC Version】Daily Question 20180416 - HCBBS Forum
84. Stop the fan - HCBBS Forum
85. How to shut off the valve using the pressure alarm of the reactor? - HCBBS Forum
86. Low-temperature storage tank - HCBBS Forum
87. Regarding the reverse circulation pipeline of shielded pumps - HCBBS Forum
88. Do you have enamel condensers? ? Can enamel be used in situations with large temperature differences? - HCBBS Forum
89. Selection of frozen water tanks - HCBBS Forum
90. How to identify primary, secondary, and tertiary energy metering instruments in chemical plants - HCBBS Forum
91. How is it possible to disconnect the liquid ammonia tank from the truck at the end of the loading/unloading process without any ammonia leakage? - HCBBS Forum
92. Could you please recommend some good books on the deep cryogenic nitrogen production process? - HCBBS Forum
93. Starting operation of a centrifugal pump - HCBBS Forum
94. What are the maximum temperature tolerances of furan resin and phenolic resin? Can it handle 5% hydrobromic acid and free bromine? - HCBBS Forum
95. Flow measurement of high-pressure plunger pumps and related issues - HCBBS Forum
96. [Mechanical Equipment Technology Edition] Daily Question 201805026: Refrigeration Systems — Refrigeration Parameters (1) - HCBBS Forum
97. What are the advanced processes for treating VOC emissions in the manufacturing of PVC plastic products? - HCBBS Forum
98. What is NA2HCO3? - HCBBS Forum
99. Standards for washers and material selection! - HCBBS Forum
100. Fluctuations in liquid levels upstream and downstream of the kettle reboiler - HCBBS Forum