English — Forum #337 (Page 44/163)

1. 【Haichuan Equipment Guessing Game】Can you figure out what kind of equipment this is just by looking at the flowchart? Huh? - HCBBS Forum
2. Does the emergency pressure relief manhole have an option for connecting external pipes? Collect the discharged gas/liquid - HCBBS Forum
3. Old K says every week – talking about things in the petrochemical design industry. Post 50: The handwheel of control valves and valve assemblies - HCBBS Forum
4. Repair ABB positioner - HCBBS Forum
5. Blockage of the bottom insertion pipe in the reactor - HCBBS Forum
6. How is it calculated how much fire-fighting foam is needed for a 30-cubic-meter methanol storage tank? Also, how is the appropriate pipe diameter determined? - HCBBS Forum
7. Recycling of flash vapor - HCBBS Forum
8. Why is alumina transported pneumatically? - HCBBS Forum
9. Looking for a book: BASF citral process - HCBBS Forum
10. Issues with grid installation in fixed-bed reactors? - HCBBS Forum
11. Calculation of R22 flash volume - HCBBS Forum
12. Plate type flat welding flange and necked flat welding flange - HCBBS Forum
13. Temperature of ammonia synthesis tower - HCBBS Forum
14. High turbine vacuum - HCBBS Forum
15. Flow meter installation - HCBBS Forum
16. HG20519 is shared with everyone - HCBBS Forum
17. Explosion protection rating issues for methanol to formaldehyde conversion - HCBBS Forum
18. Are there requirements for a straight pipe section for the installation of the flow restriction orifice plate? Is there a direction or not? - HCBBS Forum
19. SA-1000 - HCBBS Forum
20. The issue of the composition ratio of benzene, toluene, and xylene in catalytic reforming for aromatic hydrocarbon production - HCBBS Forum
21. Treatment of highly toxic exhaust gases - HCBBS Forum
22. TCCSAS 007—2020 Implementation Specifications for Change Management in Chemical Enterprises - HCBBS Forum
23. The steam pipeline through which steam directly heats the water vibrates violently; can installing an expansion joint solve the noise problem? - HCBBS Forum
24. Assessment - HCBBS Forum
25. Could you recommend any manufacturers capable of calculating and producing high-quality tower-type equipment such as strippers, ammonia distillation towers, ammonia absorption towers, and stripping towers? - HCBBS Forum
26. Seeking expert help: design documents for bromine production via acid method - HCBBS Forum
27. Issues regarding using Aspen to simulate the viscosity of high-pressure natural gas - HCBBS Forum
28. Which company does a good job with heat recovery? - HCBBS Forum
29. What is the current price of steam condensate? - HCBBS Forum
30. How is pneumatic valve interlock represented? - HCBBS Forum
31. What is the effect of the side-stream yield from a packed distillation column on the temperatures at the top and in the column body? - HCBBS Forum
32. Purification of PLA - HCBBS Forum
33. Flange drip-proof insulation system - HCBBS Forum
34. Regarding French fire protection standards and GB50016, can we choose either one? When checking the fire protection facilities in this factory building, we found many issues that do not comply with the \"GB50016 Code for Fire Protection Design of Buildings\". The design team said it belongs to the installation industry, and factories like ours are related to nuclear power - HCBBS Forum
35. I was wondering if any of you have requirements related to organic fluorine chemicals, such as tetrafluoroethylene, hexafluoropropylene, electronic-grade ammonium fluoride, electronic-grade hydrogen fluoride, and so on. - HCBBS Forum
36. Hydrogen supply station - HCBBS Forum
37. On the design of analytical testing - HCBBS Forum
38. Search: Chemical Process Design Manual, 5th Edition, Figure 35-1 - HCBBS Forum
39. Hazardous chemical waste is different from hazardous waste, right? - HCBBS Forum
40. Maintenance, repair, and overhaul methods for petrochemical York chillers - HCBBS Forum
41. Our company produces ethanol gasoline, and we have recently noticed that the top of the ethanol storage tank has turned black. What could be the cause? - HCBBS Forum
42. I would like to ask how to deal with esters with high acidity - HCBBS Forum
43. Diesel hydrogenation reactor - HCBBS Forum
44. Chlorine gas cylinder - HCBBS Forum
45. Air flow conversion - HCBBS Forum
46. Circle and Square - HCBBS Forum
47. I ask all forum members to help find the source of this table - HCBBS Forum
48. Xiaobai asks for advice - HCBBS Forum
49. What should be included in the operating procedures of chemical enterprises? - HCBBS Forum
50. Selection of insulation materials - HCBBS Forum
51. Regarding the effect of the reboiler circulation rate on steam consumption - HCBBS Forum
52. Discussion on the operating procedure of double-effect distillation (double-effect countercurrent) - HCBBS Forum
53. Condensation water appears on the outer walls of the liquid caustic storage tank and the hydrogen peroxide storage tank - HCBBS Forum
54. Size of the thermometer port on the glass-lined reactor - HCBBS Forum
55. Electrical installation tray - HCBBS Forum
56. Issues with the air compressor station, thank you for your answer - HCBBS Forum
57. When using a flame arrester with a vent valve, is it integrated as one unit, or are the flame arrester and the vent valve separate components that are assembled together on site? - HCBBS Forum
58. Seeking literature - HCBBS Forum
59. How to solve it - HCBBS Forum
60. Old K says every week -- Post 52: How to consider the exhaust volume of the breathing valve under fire conditions - HCBBS Forum
61. What does Class A technical documentation include in engineering construction? - HCBBS Forum
62. After the installation of pressure pipelines is completed, in addition to conducting a water pressure test to check for leaks, what other standards are required for inspection and acceptance? - HCBBS Forum
63. Calculation of compressed air flow rate - HCBBS Forum
64. Why are catalysts B and C mixed together before being added to the reactor in the polypropylene production process? - HCBBS Forum
65. Can a safety valve be installed horizontally? - HCBBS Forum
66. What material is suitable for use when wastewater contains hydrogen bromide and bromine? - HCBBS Forum
67. In a wall-mounted heat exchanger, heat exchange occurs between the two fluids under turbulent conditions. The convective heat transfer coefficients for hot and cold fluids are 150 kW/(m2·℃) and 300 kW/(m2·℃), respectively. - HCBBS Forum
68. Adjustments to the centrifuge for anti-surge protection - HCBBS Forum
69. How to produce pharmaceutical-grade ferrous sulfate from ferrous sulfate produced as a by-product of titanium dioxide production - HCBBS Forum
70. Six types of petrochemical and chemical process equipment are to be phased out by a set deadline, effective from January 1, 2022 - HCBBS Forum
71. How should the measured variable H (manual) for instrument functions be understood? - HCBBS Forum
72. What is the maximum pressure that stainless steel clamped pipe connections can withstand? Are there any guidelines? - HCBBS Forum
73. According to the petrochemical regulations, what are plant storage tanks and groups of plant storage tanks? Must a plant storage tank be just one tank with no more than one, while a group of plant storage tanks must consist of multiple tanks? - HCBBS Forum
74. Acetylene issues in the deep cooling section of ethylene plants - HCBBS Forum
75. Can a burst disc withstand negative pressure in the equipment, and activate to protect the equipment once a certain level of negative pressure is reached? - HCBBS Forum
76. 98.8 meters! The largest equipment for aromatic compounds at Jiujiang Petrochemical has been successfully lifted into place - HCBBS Forum
77. How do you bring in and take out the large equipment in the factory building? Enter through the door? From the top of the factory building? - HCBBS Forum
78. Recovery of potassium chloride and hydrochloric acid from a mixed solution of potassium chloride, magnesium chloride, and hydrochloric acid - HCBBS Forum
79. Production process of magnesium fluosilicate - HCBBS Forum
80. How much propylene can a 400-liter and a 1000-liter spherical tank hold respectively? - HCBBS Forum
81. Problems in water hammer calculation - HCBBS Forum
82. Propylene glycol methyl ether acetate: reactions, acidity issues - HCBBS Forum
83. Principles of Chemical Engineering: A fluid with a certain mass flow rate flows turbulently inside a straight pipe with dimensions of φ25mm×2.5mm. . . Help needed - HCBBS Forum
84. [Control Systems] Looking for a video tutorial on Honeywell DCS? - HCBBS Forum
85. I would like to know how to determine the exhaust air volume in the production workshop; the pipes have a DN500 diameter. What methods can be used to find out the actual exhaust air volume? - HCBBS Forum
86. An instrument that emits blue light, for installation purposes – what is it? - HCBBS Forum
87. Distance requirements between the substation and storage tanks in an oil depot - HCBBS Forum
88. Purification of carbon dioxide gas - HCBBS Forum
89. Calculation of expansion pressure in a closed container filled with liquid - HCBBS Forum
90. To heat pure water using wastewater at 100°C and make use of the waste heat, what type of heat exchanger scheme should be employed? - HCBBS Forum
91. Sodium hydroxide and water simulation - HCBBS Forum
92. Project kickoff meeting - HCBBS Forum
93. Seek part-time experts to assist the company with inspections: one for the general layout, one for fire emergency preparedness, and one for safety management - HCBBS Forum
94. Regarding the issue of pressure boundaries - HCBBS Forum
95. Must the inner diameter of the pipes between the serve and receive buckets be the same? - HCBBS Forum
96. Steam jet mixer calculation - HCBBS Forum
97. Review: Latest Progress on Domestic Ten-Million-Ton-Class Refining and Chemical Projects (Updated Version) - HCBBS Forum
98. How should pressure testing be carried out for nitrogen-sealed storage tanks? What standards should be referred to for pressure testing? - HCBBS Forum
99. Hydrolysis of carbonyl sulfide to hydrogen sulfide - HCBBS Forum
100. Which is better, PLANT 3D or CADworks? What other good 3D software is there? - HCBBS Forum