English — Forum #337 (Page 29/163)

1. In the liquid hydrocarbon decarboxylative desulfurization fixed-bed reactor, the small catalyst particles break apart and expand, pushing aside the wire mesh and grills at the top of the fixed bed and being carried to the back area, where they cause blockages. - HCBBS Forum
2. Representation method of SIS interlock - HCBBS Forum
3. What are the requirements for the distance between the crane position and the pump? - HCBBS Forum
4. Safety technical requirements for oil and gas ventilation at the tops of storage and transportation tank areas in petrochemical enterprises - HCBBS Forum
5. Are there any standards specifying the distance between static grounding points for non-metallic pipes and metallic pipes? - HCBBS Forum
6. Thiacloprid synthesis catalyst - HCBBS Forum
7. On the issue of blast resistance design for buildings [ - HCBBS Forum
8. HEDP continuous production process - HCBBS Forum
9. Precautions for purchasing used evaporators - HCBBS Forum
10. Can a compact structure with the upper layer using circulating water to cool the steam and the lower layer using deep-cold water as the cooling medium be created in the form of a heat exchanger with layers stacked on top of each other? - HCBBS Forum
11. Equipment for producing epichlorohydrin by the glycerol method - HCBBS Forum
12. The origin of semi-autogenous mills - HCBBS Forum
13. Location of the water ring vacuum pump and the condenser - HCBBS Forum
14. The feed to the desolventizer tower increases, and the vacuum in the tower decreases - HCBBS Forum
15. Fire protection rating of carbon nanotube production facilities - HCBBS Forum
16. Regarding differential pressure flow, vortex shedding, mass, and electromagnetic flow – how can the measurement range be expanded? - HCBBS Forum
17. Does the temperature of a saturated steam pipeline drop after being depressurized by a pressure reducing valve? - HCBBS Forum
18. When competitors engage in price wars within the same market segment, threatening everyone’s ability to survive, what are some ways to break this deadlock? - HCBBS Forum
19. Send the appearance of a metering pump; I’m not sure about its working principle - HCBBS Forum
20. Dear teachers, what temperature should be set for the outlet temperature of the distillation column feed heater? - HCBBS Forum
21. Are there any requirements regarding straight pipe sections before and after the installation of pressure relief valves and safety valves? Are there any other requirements? - HCBBS Forum
22. What type of level gauge is suitable for a storage tank with agitation? - HCBBS Forum
23. Ningbo Jinfafa 600,000 tons PDH - HCBBS Forum
24. Construction organization design for chemical engineering installation - HCBBS Forum
25. Engineering documents for atmospheric and vacuum distillation units - HCBBS Forum
26. SIL classification and verification - HCBBS Forum
27. What to do after the liquid-phase safety valve activates - HCBBS Forum
28. Help, I need the names of the substances on both sides of this equation - HCBBS Forum
29. The valve model is SD342F1-150R7; could you please tell me what the meaning of these letters is? - HCBBS Forum
30. Are the detailed regulations, petrochemical regulations, and construction regulations required to be met simultaneously? If it’s not necessary, which specification should be implemented first? - HCBBS Forum
31. May I ask which type of gasoline requires pressurization during transportation and handling? - HCBBS Forum
32. How to address excessive fluctuations in the liquid level of the medium-pressure drum - HCBBS Forum
33. Classification of pipe base materials - HCBBS Forum
34. What should be the set value for the back pressure of the metering pump’s back pressure valve, and what should be the set pressure for the safety valve? - HCBBS Forum
35. Aspen12.1 User Manual - HCBBS Forum
36. Sodium fluoride, sodium nitrate, 500-1000 ppm, at room temperature, with a alkalinity of 3-4%, can carbon steel be used? - HCBBS Forum
37. Issue with bracket numbering in pipeline layout drawings - HCBBS Forum
38. According to the standards, under what circumstances is it required to install dual level gauges? - HCBBS Forum
39. Questions regarding the selection of material for pipe fittings in gas stations - HCBBS Forum
40. Recommendations for the procurement of molten salt for chemical processing plants - HCBBS Forum
41. Problems with pump pressure and tower pressure - HCBBS Forum
42. The minimum diameter for steel-lined pipes and valves is DN25; however, it is very inconvenient to take samples using DN25. Are there any smaller sampling valves specifically designed for steel-lined systems? - HCBBS Forum
43. Can the operating valve be used as an emergency shut-off valve? - HCBBS Forum
44. Selection of pump outlet safety valve - HCBBS Forum
45. Regarding the issue of inverted exhaust temperature during load adjustment in screw air compressors - HCBBS Forum
46. Calculation of liquid chlorine storage tank leakage rate - HCBBS Forum
47. Calculation of steam loss during the transportation of steam pipes - HCBBS Forum
48. Can the styrene sampling cylinder be online for a long time? - HCBBS Forum
49. I heard that desiccants need to be installed at the vent openings of gasoline tanks in gas stations; I’m not sure why. - HCBBS Forum
50. Here are the reminders and explanations regarding the key provisions of the \"General Specifications for Industrial Equipment and Pipeline Projects in Plant Areas\" (draft for comments)! - HCBBS Forum
51. 【Free Download】Comprehensive Book on Safety Techniques for Hazardous Chemicals – General Volume - HCBBS Forum
52. Regarding a benzene concentration of 50,000 mg/m3, is the air diluted before it enters the adsorption system? - HCBBS Forum
53. Can the bidder apply for the project approval procedures (planning permits, construction permits, etc.)? - HCBBS Forum
54. Acetic acid pyrolysis carbonization - HCBBS Forum
55. Help: Corrosion Data and Material Selection Manual - HCBBS Forum
56. Seeking advice from experts on thermodynamics problems - HCBBS Forum
57. Is there a list of spare parts and wear parts commonly used in engineering, such as pumps, fans, pneumatic valves, instruments, etc.? - HCBBS Forum
58. Regarding the issue of whether interlock design should be done in a DCS or SIS system - HCBBS Forum
59. What is the appropriate hydrogen-to-nitrogen ratio for ammonia synthesis? What is the appropriate ratio between the amount of syngas and recycled hydrogen? - HCBBS Forum
60. Issues regarding the use of liquid ammonia cylinders - HCBBS Forum
61. Material addition issue - HCBBS Forum
62. Regarding the proportion of flaw detection for pressure pipelines, I would appreciate some guidance from experts - HCBBS Forum
63. Are there detailed equipment manufacturing plans, tables outlining key milestones, inspection items, and standards? - HCBBS Forum
64. I need a question bank on general knowledge of chemical engineering processes - HCBBS Forum
65. Guys, when calculating mass transfer processes with limited mass transfer, how do we determine the gas-liquid mass transfer coefficient? - HCBBS Forum
66. How are the auxiliary materials for insulation of equipment and pipelines determined? - HCBBS Forum
67. De-fluorination resin - HCBBS Forum
68. Is there a more detailed table showing the corrosion resistance of PE, PP, PO, etc.? - HCBBS Forum
69. The water pump vibrates heavily - HCBBS Forum
70. Which scheme for the gas-liquid separator is more reasonable? - HCBBS Forum
71. Chlorine buffer tank - HCBBS Forum
72. Stirring tank viscosity sensor - HCBBS Forum
73. The issue of the relative density of oxygen - HCBBS Forum
74. May I ask if the surface energy of the carbon steel seat can be welded to Stellite? Cladding with Alloy6 - HCBBS Forum
75. Calculation of pipeline flaw detection ratio - HCBBS Forum
76. Height requirements for the exhaust pipes of the exhaust emission outlets and emergency emission outlets of oil and gas recovery facilities - HCBBS Forum
77. What is the difference between these two explosion protection ratings? Is there a big difference in price? - HCBBS Forum
78. For waste gas treatment projects handled by environmental protection equipment companies that lack design qualifications, is it possible to produce as-built drawings? - HCBBS Forum
79. The water volume is large; should pH adjustment be done online or in a tank? Tanks require too much space and involve high costs - HCBBS Forum
80. Who knows the progress of Cangzhou Dahua’s MDI project? - HCBBS Forum
81. Should a combustible gas detector or a toxic gas detector be used for methanol? - HCBBS Forum
82. Calculation of liquefied gas volume for furnace drying - HCBBS Forum
83. What is this? - HCBBS Forum
84. May I ask whether a condenser is required for storage tanks of flammable liquids or volatile liquids? - HCBBS Forum
85. What type of safety valve should be used for the return inlet of the pump outlet safety valve? - HCBBS Forum
86. Amine solution degradation - HCBBS Forum
87. Regarding the nitrogen sealing of the solvent storage tank, the reason for the exhaust pressure of 3000 Pa at the single exhaust valve - HCBBS Forum
88. Is it safe to use steel-lined plastic storage tanks for methanol and ethanol? Is it allowed by the regulations? How to export static electricity? - HCBBS Forum
89. DMF dehydration, what is the role of a packed tower? - HCBBS Forum
90. PID flow diagram for hydrogen production via methanol cracking - HCBBS Forum
91. CSB Accident Investigation Report Formosa_IL_Report-Chinese - HCBBS Forum
92. Ask a simple question: Regarding coke oven gas issues - HCBBS Forum
93. Pipeline flow meter - HCBBS Forum
94. Is there a valve that can automatically discharge water as soon as it appears in the exhaust gas treatment pipeline? Automatic separation of gases and liquids, similar to a steam trap - HCBBS Forum
95. Chemours N324 For sale - HCBBS Forum
96. Registered Chemical Engineer Examination - HCBBS Forum
97. What is the purpose of connecting a nitrogen supply to the fan? - HCBBS Forum
98. How should one go about creating a set of skid-mounted product series similar to those used for activated carbon adsorption? - HCBBS Forum
99. Wall thickness of Sch20 - HCBBS Forum
100. What is the internal structure of an RTO regenerative incinerator? - HCBBS Forum