English — Forum #337 (Page 50/163)

1. Heat exchange temperature difference between cold and hot fluids at the heat exchanger outlet - HCBBS Forum
2. Dalian Danai pumps - HCBBS Forum
3. Requirements for unloading and storage of allyl alcohol - HCBBS Forum
4. Can loose-flange welded rings (PJ/SE) replace welded flanges with necks (WN)? - HCBBS Forum
5. How to remove ethanol, aldehydes, and isomers from acetonitrile - HCBBS Forum
6. Old K says every week – Talking about things in the petrochemical design industry. Post 34: Requirements put forward by the process engineering team during the detailed engineering design phase - HCBBS Forum
7. Temperature control methods for heat exchangers: selection between bypass and direct flow regulation approaches - HCBBS Forum
8. Fan inlet pressure - HCBBS Forum
9. What type of gaskets are used for the oxidation furnace body in silver-process formaldehyde production? - HCBBS Forum
10. Separation of sodium formate and sodium thiosulfate - HCBBS Forum
11. 18 key chemicals and hazardous processes under strict supervision – Cracking process - HCBBS Forum
12. Ethylene glycol process by the Chinese Academy of Sciences and Ningbo Yuandong Catalysis Co., Ltd - HCBBS Forum
13. Iron removal using hydrochloric acid, hydrochloric acid decolorization technology. - HCBBS Forum
14. Continuous phase separation equipment - HCBBS Forum
15. Is the standard condition for air volume based on the fan’s standard operating conditions of 20°C and 101325 Pa, or is it based on the standard condition of 0°C? - HCBBS Forum
16. A brief analysis of the key elements in the synthesis process of active pharmaceutical ingredients - HCBBS Forum
17. Why is the purification of chromic acid mist not yet satisfactory in China? - HCBBS Forum
18. The Honeywell humidity sensor HIH-4010 series is used for humidity detection in refrigeration equipment - HCBBS Forum
19. Announcement on the External Guarantee Limit of Maoming Petrochemical Shihua Co., Ltd - HCBBS Forum
20. Everyone, let’s discuss how to purge the pipelines - HCBBS Forum
21. Spraying equipment and construction techniques for polyurethane elastomer spraying - HCBBS Forum
22. Latest Progress on Yushen Energy Chemical’s 500,000 tons/year coal-based ethanol project in Shaanxi Yan’an Petroleum, with an investment of 7 billion yuan - HCBBS Forum
23. Installation location of the steam pipeline purging target plate - HCBBS Forum
24. Question: Classification of the fire hazard of sodium sulfide - HCBBS Forum
25. Notes on the process regarding insulation types - HCBBS Forum
26. What is the difference between pentane removal before and after hydrogenation of pyrolysis gasoline? - HCBBS Forum
27. How should the backwash water from the sponge iron deaerator be treated? - HCBBS Forum
28. Sealed sewage discharge - HCBBS Forum
29. Contents of professional design in chemical engineering processes - HCBBS Forum
30. Party A said that adding a vacuum to the storage tank would enable mixing - HCBBS Forum
31. Is there a standard for the diameter of the internal coil in the equipment? - HCBBS Forum
32. Are the welding heat treatment requirements for industrial pipelines related to the medium used? - HCBBS Forum
33. What impact do the design temperatures of -45°C and -48°C for propylene have on the material selection for pipes and equipment? - HCBBS Forum
34. Heat exchanger design - HCBBS Forum
35. Elevation of equipment layout diagram - HCBBS Forum
36. That technician has drawings and instructions similar to those for a turning device; please send them to me so I can study them. - HCBBS Forum
37. Has antifreeze been added to the circulating water system? How effective is it, and is the cost high? - HCBBS Forum
38. The State Council approved the joint reorganization of the "two industrializations" and another trillion-level giant was born - HCBBS Forum
39. Complete Record of the 3rd Conference on Petrochemical Gas Purification and Sulfur Recovery Technologies - HCBBS Forum
40. Are there any households that use AVIC’s weighing modules? I have a question to ask - HCBBS Forum
41. Regarding the problems encountered with the piping - HCBBS Forum
42. Could you provide some relevant introduction? - HCBBS Forum
43. Old K says every week – talking about things in the petrochemical design industry. Post 21: Pressure drop and energy consumption of control valves - HCBBS Forum
44. Discussion on the condition of the carburetor and buffer tank - HCBBS Forum
45. Does the incinerator fall under the category of \"gas-fired heaters\" as mentioned in the \"List of Processes and Equipment for Phasing Out Hazardous Chemicals\"?” - HCBBS Forum
46. Bed type 2 of the fluidized bed reactor - HCBBS Forum
47. The pipe suddenly expands – pressure calculation, help! ! ! - HCBBS Forum
48. For the **phenol process - HCBBS Forum
49. Tool for automatically summarizing and generating comprehensive material tables - HCBBS Forum
50. Pressure control of pl32 53B - HCBBS Forum
51. Gasification furnace - HCBBS Forum
52. HTRI finned heat exchanger - HCBBS Forum
53. How to find or calculate the solubility of hydrogen in water at different pressures - HCBBS Forum
54. Selection of reflux and feed flow meters in negative pressure high-temperature distillation systems? - HCBBS Forum
55. Experts in organic chemistry, guess the components by their smell! - HCBBS Forum
56. Could the expert take a look and see if there are any issues with the PID diagram? - HCBBS Forum
57. Design choices for pressure vessel welds - HCBBS Forum
58. How to draw the valve switching interlock on a PID diagram - HCBBS Forum
59. What temperature of chilled water is required to cool dichloromethane waste gas? - HCBBS Forum
60. Methane conversion rate in natural gas hydrogen production - HCBBS Forum
61. Design pressure of negative pressure tower - HCBBS Forum
62. 18 key chemicals and hazardous processes under strict supervision—Ammonia synthesis process - HCBBS Forum
63. Carbon Steel and Pipeline Steel - HCBBS Forum
64. Unit conversion problems - HCBBS Forum
65. Lao K talks every week - talk about the petrochemical design industry. The 14th post illustrates the content and procedures of process professional design. - HCBBS Forum
66. Function of the flash tank installed before the distillation tower - HCBBS Forum
67. MVR evaporation crystallization process flow chart - HCBBS Forum
68. Seek advice on vacuum pumping using the outlet condensate drain in the reboiler - HCBBS Forum
69. How to reduce noise in high-power centrifugal fans and ductwork - HCBBS Forum
70. What does this official seal on this PID diagram mean? - HCBBS Forum
71. Ion-exchange membrane caustic soda technology - HCBBS Forum
72. Work mode and salary system in design institutes - HCBBS Forum
73. Help, urgently! ! ! - HCBBS Forum
74. P204 extraction - HCBBS Forum
75. Is a casing required when underground pipes enter the ground at a peak-shaving station? - HCBBS Forum
76. Chemical plant construction - HCBBS Forum
77. Sulfur recovery - HCBBS Forum
78. Request for assistance regarding improvements to the oxidation process and tank cleaning procedures for colored iron oxide pigments - HCBBS Forum
79. How to design the external dimensions of an oil-water separation tank - HCBBS Forum
80. Old K says every week – Talking about things in the petrochemical design industry. Post 22: Names and codes of the project design phases - HCBBS Forum
81. Lead anode coating - HCBBS Forum
82. How is the net positive suction head of a reciprocating pump calculated? - HCBBS Forum
83. I would like to ask how to choose the welds for this cylinder and the connecting pipe - HCBBS Forum
84. After the removal of sludge from the circulating water, the ammonia nitrogen level increased from 0.5 to 4.25 mg/L. Is this the effect of the desludging agent? - HCBBS Forum
85. Help, what are the problems with this design diagram for the desulfurization project? - HCBBS Forum
86. Carbon dioxide mixed with air as a refrigerant medium - HCBBS Forum
87. What calculation values are affected by the size As of the split area at the heat exchanger tube sheet? - HCBBS Forum
88. Liquefied natural gas process - HCBBS Forum
89. Hydrogen peroxide production process - HCBBS Forum
90. Latest Hardware Manual (book) - HCBBS Forum
91. Can this steel plate withstand temperatures of 300–400°? What type of welding rod should be used, and are there any standard specifications to refer to? - HCBBS Forum
92. New synthesis process - HCBBS Forum
93. What is the difference between a plug valve and a regular ball valve? What are the main occasions it is used for? - HCBBS Forum
94. Process of variable temperature adsorption and startup/shutdown - HCBBS Forum
95. Start a thread to discuss the problems encountered in production, specifically in chloromethane production - HCBBS Forum
96. I just can’t figure out the differences in the upper letter combinations for valve designations. For example, FV, FC, FT, FRC, FRCQ, FI - HCBBS Forum
97. Safety valve on the outlet pipeline of the metering dosing pump - HCBBS Forum
98. Requirements for purchasing inquiries regarding control skids - HCBBS Forum
99. Issues regarding the protection of the exterior walls of circulating cooling water towers - HCBBS Forum
100. A brief analysis of the improved manufacturing processes for peptide drugs - HCBBS Forum