English — Forum #336 (Page 19/51)

1. Harm of heptane - HCBBS Forum
2. On the relationship between pipeline cold tightening and stress - HCBBS Forum
3. Urgently need Class A qualification in the chemical industry - HCBBS Forum
4. Multiple types of boilers, such as thermal oil boilers, steam boilers, and waste heat boilers, are installed in the same boiler room. Which codes and standards must be complied with? - HCBBS Forum
5. Qingdao Petrochemical Design Institute, Maoming Design Institute - HCBBS Forum
6. How to fix this issue with EDR? - HCBBS Forum
7. The importance of a stepping stone - HCBBS Forum
8. Let’s discuss whether cavitation can occur in screw pumps - HCBBS Forum
9. Problems of crude oil desalination and dehydration - HCBBS Forum
10. Must a compressed air supply be connected to the jacket of the reactor? - HCBBS Forum
11. Where are steel pipes with an outer diameter of 127 generally used? - HCBBS Forum
12. Plate height of packed towers - HCBBS Forum
13. Methods for Compiling Feasibility Study Reports for Chemical Industry Investment Projects - HCBBS Forum
14. Use of CO2 and compressed air - HCBBS Forum
15. Is it necessary to install a chlorine gas alarm in the storage area for 10% sodium hypochlorite solutions? - HCBBS Forum
16. The problem of scouring caused by uneven water distribution in anaerobic tanks - HCBBS Forum
17. The owner develops the process on its own and keeps the logistics data confidential from the design institute; what should the design institute do? - HCBBS Forum
18. 【SeaChannel Safety Discussion】Should the supports of A052 equipment be fireproofed? ? ? ? - HCBBS Forum
19. Why are valves installed at the gas inlet of the high-pressure reactor and at the reactor mouth, and what is the basis for this? - HCBBS Forum
20. TyroTools-Aqua: Program for calculating the properties of water and water vapor - HCBBS Forum
21. Filter - HCBBS Forum
22. Should a glass plate sightglass be installed on the vapor line of the distillation kettle? - HCBBS Forum
23. Gentlemen, regarding the issue of geometric tolerances - HCBBS Forum
24. Please tell me the meaning and origin of MCC in the picture, thank you! - HCBBS Forum
25. How is the required frequency PFD determined in SIL classification (LOPA analysis)? - HCBBS Forum
26. Can membrane separation technology be used to separate oxygen from a mixture containing oxygen, nitrogen, and organic volatile gases? - HCBBS Forum
27. Concentration of dilute nitric acid - HCBBS Forum
28. For 304/304L material with dual grade certification, how should the allowable stress be selected when performing calculations? - HCBBS Forum
29. 【Haichuan Project Updates】37 billion yuan invested in Xinjiang Naomao Lake’s 1.5 million tons/year coal-based olefins project - HCBBS Forum
30. How to choose in case of norm conflicts - HCBBS Forum
31. The \"Guidance Catalogue for Industrial Structure Adjustment (2024 Edition)\) lists 12 items that are encouraged, 13 items that are subject to restrictions, and 17 items that should be phased out - HCBBS Forum
32. Sodium methoxide process package - HCBBS Forum
33. What does this symbol mean in safety valve settings? - HCBBS Forum
34. How is the resistance coefficient of a reducer determined? I don’t understand - HCBBS Forum
35. Is the J41 type globe valve suitable as a bypass for automatic control valves? - HCBBS Forum
36. Reboiler calculation - HCBBS Forum
37. Coursework Solutions on Principles of Chemical Engineering - HCBBS Forum
38. May I ask which standard the screenshot is taken from? - HCBBS Forum
39. Questions about saturated vapor pressure? - HCBBS Forum
40. The oxygen content in inert gases is 3%; how can the oxygen content in the system after displacement be reduced to less than 0.5%? - HCBBS Forum
41. Thermal resistor - HCBBS Forum
42. Butyl acrylate process - HCBBS Forum
43. Pipeline network calculation - HCBBS Forum
44. Does anyone have data on the relationship between methanol distillation residues and steam consumption? Thank you! - HCBBS Forum
45. Design of the spray water system for liquid ammonia tank farms - HCBBS Forum
46. Sources for estimating air leakage in vacuum systems - HCBBS Forum
47. Only standards listed in the standard normative reference documents can be used - HCBBS Forum
48. High-definition copy of Flammable and Combustible Liquids Code NFPA30-2021 - HCBBS Forum
49. What is the difference between the design of system utility tunnels (process and thermal piping networks) and the design of ordinary plant pipelines (internal tunnels)? - HCBBS Forum
50. Lu An Jian Fa No. 140: The issue of whether the guidelines on safety control for distillation systems should be repealed - HCBBS Forum
51. The Binzhenghong domestic graphite digester is used for sample pretreatment; temperature setting of the graphite digester - HCBBS Forum
52. Seek a sample for the selection of wave compensators* for reference - HCBBS Forum
53. [Haichuan Project Updates] Environmental Impact Assessment Announcement for Fujian Yongrong Technology’s 600,000 tons/year caprolactam upgrade project - HCBBS Forum
54. Crane performance table - HCBBS Forum
55. Chemical Products Manual – Fine Inorganic Chemical Products - HCBBS Forum
56. Software with set-based specifications is suitable for use in process engineering - HCBBS Forum
57. SY/T 5257-2012 Elbow pipes - HCBBS Forum
58. Installation of flame arresters on chlorine pipelines - HCBBS Forum
59. 【Haichuan Chemical Project Updates】Shanxi Sanqiang New Energy Carbon Black Raw Materials and Energy Recycling Comprehensive Utilization Project - HCBBS Forum
60. Guys, can the heat exchanger in the picture be used for the vaporization of liquid chlorine? - HCBBS Forum
61. What standards should be followed for the layout of pilot-scale plants? - HCBBS Forum
62. **How can I download the online PDF from the standard full-text public system? - HCBBS Forum
63. How PID diagrams distinguish between simple control and cascade control - HCBBS Forum
64. Can the discharge from the safety valve on the circulating water side of the heat exchanger be directly fed into the flare network? - HCBBS Forum
65. How to design an internally electrically heated storage tank at atmospheric pressure - HCBBS Forum
66. Discharge from crystallization tank - HCBBS Forum
67. Who determines the hazardous chemical processes that require close supervision? - HCBBS Forum
68. Seeking help regarding the \"Special Technical Requirements for Mobile Pressure Vessels Using Ethylene Oxide\" - HCBBS Forum
69. Fire monitor - HCBBS Forum
70. Electronic-grade hydrogen peroxide equipment - HCBBS Forum
71. How to control the flow rate of a fluid - HCBBS Forum
72. What is the fire hazard classification of a 10% sodium hypochlorite solution? - HCBBS Forum
73. Calculation of the volume of a 3000 m3 liquid ammonia spherical tank - HCBBS Forum
74. Two tanks are connected in parallel, and each tank has high/low level interlocks; feeding is controlled via a single DCS. What’s wrong with this setup? - HCBBS Forum
75. Instrument, forced circulation evaporation chamber - HCBBS Forum
76. What is methodology? ? ? - HCBBS Forum
77. Purification technology for argon - HCBBS Forum
78. Where can I view the Jet FLOOD for the absorption tower in HYSYS or PROII simulations? - HCBBS Forum
79. Is a check valve required at the outlet of the dry vacuum pump (which is connected to the flare system), and are flame arresters required at both the inlet and outlet? - HCBBS Forum
80. GB50016 – Code for fire protection design of buildings. Is this standard very important and widely used? - HCBBS Forum
81. Installation of emergency tanks - HCBBS Forum
82. TCCSAS 051-2024 HAZOP Main **Technical Capability Evaluation Specification – Implemented on 2024-03-25 - HCBBS Forum
83. Determination of the overall heat transfer coefficient of the condenser - HCBBS Forum
84. Can projects for two different products share the same torch? - HCBBS Forum
85. Are there any standard specifications that determine which size of bolts should be used with which size of flange? - HCBBS Forum
86. Catalytic oxidation of hydrogen chloride to chlorine gas - HCBBS Forum
87. Can concentrated sulfuric acid storage tanks, as extremely hazardous media, be laid underground? - HCBBS Forum
88. \"New Practical Filtration Technologies\" (4th Edition) by Ding Qisheng - HCBBS Forum
89. Why cannot mixed carbon 5 be stored in atmospheric-pressure tanks - HCBBS Forum
90. Calculation of heat exchange area for heat exchangers - HCBBS Forum
91. Acquire a chemical engineering design institute - HCBBS Forum
92. Is it necessary to install a combustible gas alarm for dichloromethane? - HCBBS Forum
93. Third-party evaluation of pipe racks - HCBBS Forum
94. Which expert knows what type of flange this is? - HCBBS Forum
95. On the efficiency of reboilers using steam as a heat source - HCBBS Forum
96. Anti-corrosion inside pipelines for transporting ethanol gasoline - HCBBS Forum
97. Clarifications on cut-off valves for liquefied hydrocarbon storage tanks - HCBBS Forum
98. The pre-feasibility study report for Lanzhou Petrochemical’s 1.2 million tons/year ethylene upgrade project has been approved by the group company - HCBBS Forum
99. What is the appropriate exhalation pressure value for the breather valve of a 31% hydrochloric acid storage tank? - HCBBS Forum
100. Guys, does anyone have a chemical engineering group? Could you pull it, please? Thank you so much - HCBBS Forum