English — Forum #336 (Page 21/51)

1. Technical summary: Are there 4 holes or 8 holes for the flange bolt holes on DN65 valves? - HCBBS Forum
2. Fire water volume design for LNG liquefaction plants - HCBBS Forum
3. Is the outlet of the storage tank’s breather valve connected to an environmental protection gas collection hood or directly via a flange? - HCBBS Forum
4. Installation of gas and liquid transfer pipes - HCBBS Forum
5. What does “smoldering” mean in the list of key flammable dusts in the industry and trade sector? - HCBBS Forum
6. How can open-type equipment achieve nitrogen sealing? For example, in the case of equipment with a circular opening, is it possible to create a gas curtain by installing nitrogen nozzles at the top in order to achieve nitrogen sealing? - HCBBS Forum
7. Is a fixed location required for the storage design of Class C warehouse materials? - HCBBS Forum
8. Pipeline number interpretation - HCBBS Forum
9. What does a pipeline layout plan mean? - HCBBS Forum
10. Where do the higher and lower pressures of the two safety valves on the ammonia tank come from? - HCBBS Forum
11. Recovery of dichloromethane vapors and emission within specified limits - HCBBS Forum
12. What is the purpose of the detection riser installed in a single-layer methanol tank buried in a tank pit? - HCBBS Forum
13. Electronic Book: “Pipeline Stress Analysis and Engineering Applications” - HCBBS Forum
14. Coal types for gasification - HCBBS Forum
15. What is the melting point of 68% nitric acid? - HCBBS Forum
16. Chemical piping software - HCBBS Forum
17. Issues with the layout of laboratory facilities throughout the plant - HCBBS Forum
18. Toluene is used as a water-carrying agent. How to use a density meter with a shut-off valve to automatically separate water and allow toluene to flow back to the reactor? - HCBBS Forum
19. Free tutorial on how to use the flare gas separation tank calculation sheet - HCBBS Forum
20. How should the centrifugal mother liquor from a triple-effect evaporator be treated? - HCBBS Forum
21. Some standard covers have a “hydrocarbon” label attached to them – what is the special meaning of this? - HCBBS Forum
22. How is the design margin for plate heat exchangers defined? Is it a margin for area, or a margin for the heat transfer coefficient? - HCBBS Forum
23. Jacket design and operating pressure - HCBBS Forum
24. Can workstations for personnel to perform operations be installed within the framework of a chemical processing plant? Is it considered a structure or a building? - HCBBS Forum
25. Guide to Using the Calculation Table for Kv/Cv Values of Control Valves under Installation Conditions (Gases, Steam) - HCBBS Forum
26. Explanation on how to use the hydraulic calculation table for packed towers - HCBBS Forum
27. Standard SW-2.4 of the ASME B16.20 gasket standard for American standards specifies that centering rings are included; how should concave-convex flanges be used? - HCBBS Forum
28. Adipic acid centrifuge and thickener discharger - HCBBS Forum
29. Does Haichuan not have a storage and transportation division? - HCBBS Forum
30. DL/T5434-2021 Code for Supervision of Electric Power Construction Projects - HCBBS Forum
31. Why is an interlock cut-off valve installed at the inlet of the vacuum pump? - HCBBS Forum
32. 【SeaChannel Safety Discussion】The design engineer for ladder A048 should climb it himself - HCBBS Forum
33. Does the flow rate change after the pressure before and after the pressure relief valve changes? - HCBBS Forum
34. Simple oil-water separation, correction of conductivity stratification control drawings - HCBBS Forum
35. Do you know? What is project micro-location? - HCBBS Forum
36. Welded joint heat treatment - HCBBS Forum
37. Requirements for the layout of dust collectors in production workshops - HCBBS Forum
38. 【Haichuan Equipment Guessing Game】What is the pyramid made for? ? - HCBBS Forum
39. I’m looking for a flow meter that can be used to monitor ammonia levels - HCBBS Forum
40. 45° slope of the storage tank insertion tube - HCBBS Forum
41. Flow velocity of the fluid in the pipeline - HCBBS Forum
42. Evaporation latent heat of liquid ammonia - HCBBS Forum
43. Layout of above-ground pipelines? - HCBBS Forum
44. Selection of sampling hole format - HCBBS Forum
45. Explanation of the calculation sheet for MVR evaporation process in aqueous solutions - HCBBS Forum
46. Dear Sichuan friends, Happy Mid-Autumn Festival! - HCBBS Forum
47. 【Principles of Chemical Process Safety Design】Valves - HCBBS Forum
48. Standards and specifications for engineering design in automation control fields - HCBBS Forum
49. High-performance anti-corrosion powder coating - HCBBS Forum
50. What are the pressures before and after the natural gas enters the customer’s pressure regulation and metering cabinet outside the plant? General situation - HCBBS Forum
51. Design of graphite quench tower - HCBBS Forum
52. 【Haichuan Equipment Guessing Game】Are experts planning to rebuild the Western Xia royal tombs? - HCBBS Forum
53. The fourth phase of Inner Mongolia Yuanhong Fine Chemicals Co., Ltd., with an annual production capacity of 2,000 tons of DPA, has officially started trial operations - HCBBS Forum
54. Can an office be set up in the power distribution room? - HCBBS Forum
55. CNPC CPECC North China Branch - HCBBS Forum
56. Is it necessary to install a buffer tank at the outlet of the reciprocating vacuum pump? - HCBBS Forum
57. Issues regarding the definition of the upstream and downstream boundaries for nitration, chlorination, fluorination, diazotization, and peroxidation processes - HCBBS Forum
58. Can Class A installations be installed in the space beneath the chemical pipeline corridor? (e.g., gas pressure regulating cabinets) - HCBBS Forum
59. Imports and exports of refined oil loading and unloading stations - HCBBS Forum
60. Interval distance for setting rupture discs on long-distance pipelines - HCBBS Forum
61. The most comprehensive schematic diagrams of coal chemical processes - HCBBS Forum
62. I would like to ask the experts: Are the drawings used for the safety design section and the occupational disease prevention facilities design section in chemical enterprises the same? - HCBBS Forum
63. Does LNG cryogenic submersible pump need to be explosion-proof? - HCBBS Forum
64. Enthalpy of formation and enthalpy of solution of magnesium sulfate - HCBBS Forum
65. SEI wins the EPC contract for a 1.65 million-ton ethylene plant project in the fine chemicals and raw materials sector, worth 5.06 billion yuan - HCBBS Forum
66. The total investment for the Zhoushan Jintang New Materials project is estimated to be 67.5 billion yuan - HCBBS Forum
67. On the toxicity of benzene-containing exhaust gases and venting issues - HCBBS Forum
68. A conical-shaped tank filled with brine; I want to add a stirrer - HCBBS Forum
69. Calculation of safety valve discharge capacity under heat exchanger tube rupture conditions - HCBBS Forum
70. Discharge of rainwater from chemical plant areas into the sea - HCBBS Forum
71. Process package document for the combined production of butene from propylene and formaldehyde - HCBBS Forum
72. What material is generally used for pressure components in acetic acid pressure vessels? - HCBBS Forum
73. Questions regarding GB50160-2018 - HCBBS Forum
74. Control scheme for the superheated water closed-loop system in the reaction kettle - HCBBS Forum
75. Regarding the various changes that occur during the project construction process, as well as the approval and evaluation procedures involved - HCBBS Forum
76. Is a substitute material needed for the dual-standard material? - HCBBS Forum
77. Classification of explosion hazard zones in semi-enclosed areas - HCBBS Forum
78. Free tutorial on how to use the calculation table for pipeline pressure drop in vapor-liquid/liquid-solid two-phase flow - HCBBS Forum
79. 【Ten Years of Rapid Development in Chemical Equipment】1953–2024: Signing of the design contract for the world’s largest vinyl acetate production facility with an annual capacity of 330,000 tons - HCBBS Forum
80. 3D factory design software series for chemical projects----PDSoft series - HCBBS Forum
81. Heating and vaporization of aqueous crude oil - HCBBS Forum
82. Thermometer installation location - HCBBS Forum
83. Computer-based exam for pressure pipeline designers - HCBBS Forum
84. Water hammer in steam condensate pipeline - HCBBS Forum
85. Stored in a chemical warehouse, different substances that can be stored together without any incompatibilities between them – can they be stacked on top of each other in the same stack? - HCBBS Forum
86. Sulfur recovery process - HCBBS Forum
87. Several process packages for lubricant hydrogenation, ethylamine, maleic anhydride, succinic anhydride, and PBS - HCBBS Forum
88. Chemical project 3D factory design software series----PDMS/E3D series - HCBBS Forum
89. Free tutorial on how to use the Excel template for creating progress plans - HCBBS Forum
90. Multi-stage control automatic control scheme for reactor temperature - HCBBS Forum
91. The discharge capacity issue of steam pipeline safety valves - HCBBS Forum
92. Regarding the material used for the external insulation of liquefied hydrocarbon equipment - HCBBS Forum
93. How to interpret the General Code for Building Fire Protection GB55037-2022? - HCBBS Forum
94. If the volume of the tank area exceeds the fire protection standards specified in the engineering design guidelines for fine chemical enterprises, does that mean these guidelines apply?” - HCBBS Forum
95. Why is the storage of potassium permanganate classified as Category A, while potassium permanganate production facilities are classified as Category B? ? ? - HCBBS Forum
96. Free explanation of the process calculation sheet for centrifugal compressors - HCBBS Forum
97. Natural gas flow rate - HCBBS Forum
98. Discussion on sampling locations for exhaust stacks - HCBBS Forum
99. Heat exchanger courseware - HCBBS Forum
100. Do all chemical process pipelines have to be designed by a design institute? - HCBBS Forum