English — Forum #337 (Page 13/163)

1. Collection of Self-Control Standards – Premium Sharing 2018 - HCBBS Forum
2. I need help from experts: how to calculate the heat exchange area and heat transfer rate for insulating the semi-circular tubes of a storage tank? - HCBBS Forum
3. 【Mechanical Equipment Technology Edition】Daily Question 20171204: Refrigeration Equipment (4) - HCBBS Forum
4. How can one determine the activation energy of a reaction? Can it be simulated using Aspen? - HCBBS Forum
5. Please, experts: DMAC is used for the separation of acetic acid, but there is a material imbalance – help to solve this! ! ! - HCBBS Forum
6. Usage environment and maintenance methods for electric scissors and power metal cutters - HCBBS Forum
7. Regarding the design pressure of hydrogen pipelines - HCBBS Forum
8. Adiabatic expansion and throttling expansion - HCBBS Forum
9. Is it feasible to discharge medium-temperature and medium-pressure steam condensate directly? - HCBBS Forum
10. Selection of pipeline material for butadiene polymerization inhibitors (TBC) - HCBBS Forum
11. Steam consumption per day for carbon dioxide hydrolysis heater - HCBBS Forum
12. This is the real reason why the designer doesn’t want to change the image! - HCBBS Forum
13. Regarding the superheated water process - HCBBS Forum
14. Polyphthalic? Acyl? Amines (PPA): An Overview of High-Performance Specialty Engineering Plastics - HCBBS Forum
15. What is the polypropylene additive G.M.S? - HCBBS Forum
16. Material feeding issue - HCBBS Forum
17. Process package depth - HCBBS Forum
18. Do all pipe supports that meet the span requirements have to be designed as fixed supports? - HCBBS Forum
19. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (October 26) - HCBBS Forum
20. For low-nitrogen burners such as heat transfer oil furnaces, should gas control be set at the lower or upper explosion limit? - HCBBS Forum
21. Seeking help with micro-pulverization equipment for crushing active pharmaceutical ingredients - HCBBS Forum
22. Seeking guidelines for the process design of the SDEP-SPT-PE2009 safety pressure relief system - HCBBS Forum
23. Please calculate how much area of ​​heat exchanger is needed? ? ? ? - HCBBS Forum
24. How to Use ASPEN Software for Simulating the Design and Control of Distillation – Chinese Version - HCBBS Forum
25. The liquefied gas inside the spherical tank contains alkali solutions/alkali residues or other substances, preventing the automatic water cut-off device from functioning properly - HCBBS Forum
26. If I am selling complete sets of exhaust gas adsorption equipment, does my company still need to have the qualifications to produce drawings for exhaust gas systems? - HCBBS Forum
27. Oxygen flow regulation - HCBBS Forum
28. What is the production process for **furan at BASF? - HCBBS Forum
29. May I ask if the storage tanks attached to the factory building can be located nearby outside the building? The type that doesn’t require spacing - HCBBS Forum
30. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (September 25) - HCBBS Forum
31. Liquid holdup in packed spray towers - HCBBS Forum
32. Can an operation room be installed next to the liquid chlorine tank? - HCBBS Forum
33. How deep does the static grounding in the workshop need to be buried? - HCBBS Forum
34. Looking for the manual for Oaks KFR-35GW/SD-1 - HCBBS Forum
35. 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
36. The device removes some light organic compounds in small quantities; how should these be dealt with? - HCBBS Forum
37. Chemical Engineering Professional Title - HCBBS Forum
38. 【Daily Topic】【Storage & Transportation Version 20170119】 - HCBBS Forum
39. Dust collector selection and air volume calculation issues - HCBBS Forum
40. 【Daily Question】【AC Version for Static Equipment...Question 63】March 4, 2019 – True/False Multiple Choice Question...Everything is going well - HCBBS Forum
41. Introduction to waterproof and breathable membrane knowledge - HCBBS Forum
42. Fire hazard of ammonia water - HCBBS Forum
43. What do \"primary roads\" and \"secondary roads\" mean in fire protection codes? - HCBBS Forum
44. How is the heat transfer coefficient of an electric heater calculated? ! - HCBBS Forum
45. Are there flame arresters and safety valves available with a fluorine-lined interior? What material should be used in corrosive environments with chlorinated exhaust gases? - HCBBS Forum
46. How should the boiler water drainage system of a negative pressure steam generator be designed in a reasonable manner? - HCBBS Forum
47. Methylmagnesium chloride - HCBBS Forum
48. Synthesis of organic compounds using calcium carbide as a substitute for acetylene: Technical approaches and examples for the transition from basic raw materials to higher-value products - HCBBS Forum
49. I’ve been thinking about looking into the lithium battery separator industry lately. - HCBBS Forum
50. Does the composition of the gases change after compression? - HCBBS Forum
51. After the device is overhauled and the system is purged with nitrogen, how is the oxygen content level determined? What is the standard based on? - HCBBS Forum
52. Why is there foam in the MVR falling-film evaporator? - HCBBS Forum
53. N,N-N-octylaminedimethylenephosphonic acid (OADMPPA) - HCBBS Forum
54. First application of chemical engineering processes - HCBBS Forum
55. The polypropylene Pk301 compressor has propylene for filling and washing; which part of the Pk301 is used for this purpose? . - HCBBS Forum
56. Classic Illustration - HCBBS Forum
57. Fire separation distance between directly buried underground storage tanks attached to the factory building and other buildings - HCBBS Forum
58. Can the top of a pressure vessel be flat? Are there still regulatory requirements that mandate the use of end caps? - HCBBS Forum
59. 【Daily Question】Environmental Protection Version - Water Treatment - 20190313 - HCBBS Forum
60. Who has a solvent separation technology for thick-ring aromatic hydrocarbons in catalytic diesel? - HCBBS Forum
61. Since the hydrogen release pipelines are all non-steady-state fluids, isn’t it necessary to comply with the flow rate restrictions specified in the Hydrogen Station Code GB50177? - HCBBS Forum
62. Double-flange level gauge - HCBBS Forum
63. Technical discussion on polyisobutylene: costs and market conditions for polyisobutylene - HCBBS Forum
64. If the operating pressure and operating temperature are at atmospheric pressure and room temperature, is it correct to write atmospheric pressure and room temperature for the design pressure and temperature as well? - HCBBS Forum
65. Is concentrated sulfuric acid considered a pressure pipeline? Which category should it be assigned to? ? - HCBBS Forum
66. In HTRI’s Xist module, what does this ‘i’ represent? ! - HCBBS Forum
67. Valve installation for the process condensate water pipe to the main pipe - HCBBS Forum
68. Which expert can recommend a book on the butyl alcohol production process? - HCBBS Forum
69. Expert advice on torch construction issues - HCBBS Forum
70. What are the main parameters to determine when using a circulation pump instead of a J mixer? - HCBBS Forum
71. Can’t the pump be started remotely in program-based automation? What standards are specified? - HCBBS Forum
72. 【Traffic Rules, One Question per Day】20180408--Welcome to the travel edition of \"Spring Has Arrived in Haichuan\" - HCBBS Forum
73. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) April 14, 2020 - HCBBS Forum
74. Material selection for concentrated phosphoric acid reaction vessels - HCBBS Forum
75. How to calculate the flow limitation of a control valve - HCBBS Forum
76. How much flash vapor can be generated by reducing the pressure of 0.8Mpa saturated condensate to 0.3Mpa? How much value does this portion of flash steam have? - HCBBS Forum
77. 【Piping Valve Technical Edition – Daily Question on Common Piping Errors】20170820 - HCBBS Forum
78. 【Frontiers in HaiChuan Chemical Technology】Key breakthrough in artificial photosynthesis in China: Efficient conversion of carbon dioxide and water into energy under natural light” - HCBBS Forum
79. What are the differences between these explosion protection ratings for solenoid valves? Urgent! Urgent! Urgent! ! ! - HCBBS Forum
80. Reasons why on-site separators cannot separate liquids - HCBBS Forum
81. 【Frontiers in HaiChuan Chemical Technology】New ultra-high-efficiency flexible power generation film materials developed by the Institute of Electronics, Chinese Academy of Sciences - HCBBS Forum
82. 【Daily Question】 【AC Version for Static Equipment...Question 64】 March 5, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
83. 【Frontiers in HaiChuan Chemical Technology】The Qinghai Salt Lake Research Institute of the Chinese Academy of Sciences has made significant breakthroughs in the key technologies for the extraction and separation of lithium resources from salt lakes in China - HCBBS Forum
84. TSGD7005-2018 Rules for Periodic Inspection of Pressure Piping — Industrial Piping - HCBBS Forum
85. One-on-one assistance office for leisure area technology experts (special thread for Haichuan Life region; this is the only one, no others) - HCBBS Forum
86. How can the manhole door of a rotary kiln be opened easily when its rotation has stopped? - HCBBS Forum
87. After offline chemical cleaning of the first-stage reverse osmosis system, the pressure difference increases rapidly – it rose by 40 kPa in just one week. Could some experienced colleagues help analyze this? - HCBBS Forum
88. Questions about pipeline welding - HCBBS Forum
89. Problems with pressure testing of large-diameter, long-distance pipelines. - HCBBS Forum
90. Problems with vacuum distillation process - HCBBS Forum
91. Design qualifications required to design a ready-mixed concrete plant - HCBBS Forum
92. Waste steam recovery - HCBBS Forum
93. 【JST-064】One-on-one consultation office for compound fertilizer technology experts - HCBBS Forum
94. Mechanical work for the project at Sinopec’s Tianjin Scientific Testing Base completed - HCBBS Forum
95. Seeking advice on safety spacing for storage tanks in building codes - HCBBS Forum
96. 【 Daily Topic】【 Quality Version 20170108】 - HCBBS Forum
97. Safety - HCBBS Forum
98. Where is the best location to install the ultrafiltration membrane in a reverse osmosis pure water system? - HCBBS Forum
99. Is it better to perform gas-liquid separation under high pressure or low pressure? - HCBBS Forum
100. Seeking help with the process route for R134 - HCBBS Forum