English — Forum #337 (Page 73/163)

1. Fire separation distance issue between liquid oxygen storage tanks and hydrogen peroxide storage tanks - HCBBS Forum
2. What criteria are used to determine the distance between the Class A equipment area (including platforms, intermediate storage tanks for Class A liquid alkalis, pumps, etc.) and Class A and B factory buildings?... - HCBBS Forum
3. Can the waste oil from machine pump lubricants be considered to be made into soap? - HCBBS Forum
4. When steam is cooled and depressurized, how does the temperature change during the depressurization process? How does the pressure change during the temperature reduction process? - HCBBS Forum
5. Sampling system design Sampling cooler - HCBBS Forum
6. How is the thermal engineering major? How is it to work at a design institute? - HCBBS Forum
7. Vapor pressure at boiling point - HCBBS Forum
8. Why do people still want to work in design firms with such low basic salaries? - HCBBS Forum
9. What is the specific meaning of EMI/F4 in the NDE conclusions for GB8163 pipes? - HCBBS Forum
10. When connecting the pipes embedded in the pool to the pump, is it better to install the valve first and then the flexible connector, or the flexible connector first and then the valve? - HCBBS Forum
11. Welding method - HCBBS Forum
12. What is the definition of a pressure pipeline? - HCBBS Forum
13. Can steam at 0.25 MPa, 130°C, and 19 t/h be used for waste pressure or waste heat power generation? - HCBBS Forum
14. Q345B welding - HCBBS Forum
15. How to switch the expander? - HCBBS Forum
16. Is the thermal engineering specialty in refinery design institutes such as Zhenhai Institute a supporting specialty? Is there no prospect for development? So frustrating - HCBBS Forum
17. There are pits and water; seeking solutions - HCBBS Forum
18. How to use steam cold condensate - HCBBS Forum
19. For Class A building codes, if the area is less than 5%, this can reduce the fire risk; but is it necessary to have explosion protection within that 5%? - HCBBS Forum
20. On the desulfurization effect of liquefied gas - HCBBS Forum
21. [Daily Question] Basic Process Knowledge (True/False Questions) 20190806 - HCBBS Forum
22. Why can’t the search function be used? - HCBBS Forum
23. Is the temperature difference between the gas and liquid phases in the vacuum evaporation chamber large? - HCBBS Forum
24. Graphite carbon balls used in casting prove to be effective for producing graphite castings! - HCBBS Forum
25. When creating jacketed pipes with PDMS, the establishment and solution of the jacketing tube, fittings, flanges, and valves - HCBBS Forum
26. If the storage temperature for materials is below 30 degrees, what should be done with the warehouse? - HCBBS Forum
27. How should branch pipe supports be described in the pipeline comprehensive material table? - HCBBS Forum
28. Regarding distillation - HCBBS Forum
29. Is there a specific type of vent valve designed for “installation with a nitrogen seal”? - HCBBS Forum
30. Does anyone know whether 1,2-propanediol diacetate and 1,2-propanediol monoacetate are stable? - HCBBS Forum
31. Seeking help regarding material balance issues in sulfuric acid production - HCBBS Forum
32. Baseline flue gas volume and standard dry gas volume - HCBBS Forum
33. Sulfur exhaust treatment - HCBBS Forum
34. What material should be used for 50% hydrogen peroxide at a pH of around 1? Do pipes with a diameter of DN50 or more fall under pressure pipelines? - HCBBS Forum
35. Thoughts on using on-board equipment for the cyclic production of hydrogen from sodium hydroxide and water to address the bottlenecks in hydrogen fuel cell vehicles - HCBBS Forum
36. How are the gas volume and mass flow rate generated by Phase 1 calculated? - HCBBS Forum
37. Why do the devices in a factory have to be divided into several parts instead of being integrated all together? - HCBBS Forum
38. 【Daily Question】 【AC Version for Static Equipment... Question 122】 May 2, 2019 Multiple-choice question... Happy Labor Day - HCBBS Forum
39. Calculation of water flow rate in the forced-circulation vaporization flue of a boiler - HCBBS Forum
40. What standards should be followed for gas stations that supply diesel to trains? - HCBBS Forum
41. Electrical control conditions - HCBBS Forum
42. [Daily Question] Basic Process Knowledge (True/False) 20190617 - HCBBS Forum
43. Plan for the pipeline corridor to pass through the oil depot gate - HCBBS Forum
44. The role of by-product steam in the CO conversion process for coal-to-methanol production - HCBBS Forum
45. For pipes and valves with a steel lining covered in PTFE, what type of gasket should be used? RF or FF, thank you - HCBBS Forum
46. Alkylation process technology - HCBBS Forum
47. [Daily Question] Basic Process Knowledge (True/False) 20190814 - HCBBS Forum
48. Freezing point temperature of brine, economic temperature, refrigerant evaporation temperature, professional information - HCBBS Forum
49. Is there any difference in the lining process between steel lining PO and steel lining PP PE? Which one has better fit with steel? - HCBBS Forum
50. May I ask at what alkali concentration and temperature does alkaline embrittlement occur? - HCBBS Forum
51. Tin-containing wastewater treatment process, tin recovery. - HCBBS Forum
52. Wastewater treatment device, ozone oxidation, Class A? - HCBBS Forum
53. Origin of the name for the doctoral experiment - HCBBS Forum
54. gas agent ratio - HCBBS Forum
55. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190529 - HCBBS Forum
56. What are the functions of adding several guide walls in the pool? ? - HCBBS Forum
57. How to remove dust from carbon monoxide product gas - HCBBS Forum
58. Can the ground wire be connected to the device’s anchor bolts? ? - HCBBS Forum
59. Design discussion on the absorption of pure ammonia gas with sulfuric acid - HCBBS Forum
60. How to lengthen the firing zone in rotary kiln firing - HCBBS Forum
61. [Daily Question] Basic Process Knowledge (True/False) 20190713 - HCBBS Forum
62. Latest acyl chloride production technologies - HCBBS Forum
63. Why is the propylene feed temperature in the propylene vaporizer of the acrylic acid production process 25℃ - HCBBS Forum
64. With the arrival of summer, how can one determine the thermal efficiency of heat exchangers? - HCBBS Forum
65. Regarding the concentration of hyposodium as a by-product of CH3SiCl3 in vapor-phase silica - HCBBS Forum
66. Air compressor waste heat recovery - HCBBS Forum
67. [Daily Question] Basic Process Knowledge (True/False) 20190829 - HCBBS Forum
68. Pipe inertial distance, formula for calculating pipe cross-sectional coefficient - HCBBS Forum
69. Questions regarding the selection of compressed air pipelines - HCBBS Forum
70. Seeking advice on pipe material; could some expert give some guidance? - HCBBS Forum
71. The furnace has been shut down for a year; what inspections are mandatory before restarting it? - HCBBS Forum
72. Question: In IP95 heteroalkanes, what does “IP95” mean? - HCBBS Forum
73. Please tell me which polypropylene projects in China currently use the Basel process. - HCBBS Forum
74. Is there any way to deal with the large amount of scum in air flotation? - HCBBS Forum
75. Adjustment of the operating conditions of air separation units - HCBBS Forum
76. Help: How to use Aspen to simulate the reaction between calcium carbide and water to produce acetylene - HCBBS Forum
77. How can one distinguish between waterproof composite silicate pipe shells and non-waterproof ones? Please advise - HCBBS Forum
78. Help needed - HCBBS Forum
79. Reboiler heat exchange - HCBBS Forum
80. Ideas on the specific steps for performing vacuum distillation. - HCBBS Forum
81. Dear experts, should gas cabinets and gas-using units be connected in parallel or in series? - HCBBS Forum
82. Within what range can the flow rate and head of a centrifugal pump vary while keeping the current within acceptable limits? - HCBBS Forum
83. [Daily Question] Basic Process Knowledge (True/False) 20190515 - HCBBS Forum
84. What types of level gauges can be used for water tanks? Which one is good? Especially at 60°C, acidic wastewater - HCBBS Forum
85. [Daily Question] Basic Process Knowledge (True/False Questions) 20190731 - HCBBS Forum
86. Design issues for heat exchanger inlet and outlet valves - HCBBS Forum
87. The immersion angle of the drum in a rotary vacuum filter is 120°; how can the immersion area be determined? - HCBBS Forum
88. Help, instrument issue - HCBBS Forum
89. Does everyone know what a mold temperature controller is? Let’s discuss it here - HCBBS Forum
90. Design of pilot-scale reactors - HCBBS Forum
91. Selection of condensate pump flow rate - HCBBS Forum
92. Is it okay to use pyrite in steelmaking without worrying about it affecting quality? It’s not what you think! - HCBBS Forum
93. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190916 - HCBBS Forum
94. Should the set pressure of the safety valve ports and safety valves on the equipment, as well as the pipeline supports, be determined by the equipment specialists? - HCBBS Forum
95. A safety valve is installed on the shell side of the heat exchanger - HCBBS Forum
96. Chloride ion content in water used for field tests - HCBBS Forum
97. For gas-fired heat transfer oil boilers, is it necessary to install a flame arrester on the natural gas pipeline feeding the boiler? - HCBBS Forum
98. [Daily Question] Basic Process Knowledge (True/False) 20190903 - HCBBS Forum
99. How can I find the H1 dimensions for 20615 butt weld flanges? - HCBBS Forum
100. Distance requirements for Class A standard factory rooms - HCBBS Forum