English — Forum #337 (Page 10/163)

1. What is the initial reaction temperature for the reforming reaction? - HCBBS Forum
2. Can Q235B be used at 0 degrees and 5 degrees? At atmospheric pressure, with water as the medium - HCBBS Forum
3. A terrifying regulation is about to be introduced. Scholars from HaiChuan, what are your thoughts on this? - HCBBS Forum
4. Teaching questionnaire? I’m asking for help from everyone, thank you - HCBBS Forum
5. Negative pressure fans and dust - HCBBS Forum
6. Should there not be at least two entrances and exits for the factory premises? - HCBBS Forum
7. May I ask if water pipes can be installed along the exterior walls of the power distribution room and control room, with brackets mounted on the walls? - HCBBS Forum
8. Questions regarding the design temperature and pressure on the high-pressure side of ammonia refrigeration systems – seeking assistance - HCBBS Forum
9. The issue of water as a chain terminator in the ring-opening polymerization of ethylene oxide - HCBBS Forum
10. Is it normal that there is no temperature difference between the liquid-phase inlet of the reboiler and the gas-liquid mixture outlet? - HCBBS Forum
11. Hydrogen and oxygen - HCBBS Forum
12. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190117 - HCBBS Forum
13. 3.8 MPa, 450°C superheated steam hydrostatic test pressure - HCBBS Forum
14. Safety relief issues in high-pressure reactors - HCBBS Forum
15. Seismic design of long-distance pipelines - HCBBS Forum
16. Process flow simulation for the liquid-phase synthesis of dimethyl carbonate from methanol - HCBBS Forum
17. 【Daily Topic】【HVAC Version 20170323】 - HCBBS Forum
18. Which materials require a heating expansion safety valve? - HCBBS Forum
19. Steam condensate can flow in pipes. Is its driving force derived from uncondensed steam or the vapor pressure of the steam condensate itself? - HCBBS Forum
20. Wills' Mineral Processing Technology: An Introduction to the Practical Aspe - HCBBS Forum
21. TCCSAS 007—2020 Implementation Specifications for Change Management in Chemical Enterprises - HCBBS Forum
22. 【JST-024】One-on-one consultation office for boiler technology experts - HCBBS Forum
23. Sharing of standards for titanium pipe fittings and titanium flanges - HCBBS Forum
24. Recycling of flash vapor - HCBBS Forum
25. 【Frontiers in HaiChuan Chemical Technology】Dalian Institute of Chemical Physics uncovers the molecular mechanism by which the flexible molecular sieve CoS-1 efficiently catalyzes propane dehydrogenation - HCBBS Forum
26. HAZOP analysis software - HCBBS Forum
27. Techno-economic indicators - HCBBS Forum
28. What is the purpose of the two rubber rings outside the stuffing box for sealing water? - HCBBS Forum
29. What is the meaning of the closed line in the dimensioning of layout drawings? - HCBBS Forum
30. 【Haichuan Equipment Guessing Game】Can you figure out what kind of equipment this is just by looking at the flowchart? Huh? - HCBBS Forum
31. Time flies; it’s time to say goodbye to 2017 - HCBBS Forum
32. 206-For the gas extraction liquid ring pump used in coalbed methane operations, an upgraded separation system using a vane separator is adopted for the separation of the exhaust gas, xanthan gum solution, and other components - HCBBS Forum
33. Latest progress on the Rongsheng New Materials project - HCBBS Forum
34. 【Frontiers in HaiChuan Technology】ZhongKe KeLe plans to build multiple high-end polyolefin material testing lines - HCBBS Forum
35. The pressure of the circulating water is fluctuating abnormally; I seek advice from experts! - HCBBS Forum
36. Calculation method for the U-bend on the condenser liquid outlet line? - HCBBS Forum
37. 7.28-Daily Quiz (Pharmaceutical Engineering Technology Version) – Prize-winning Competition - HCBBS Forum
38. Selection of home floor heating systems - HCBBS Forum
39. Performance differences between fire-resistant cables and flame-retardant cables - HCBBS Forum
40. Sodium methoxide production technology - HCBBS Forum
41. Difference between plastic flange guards and plastic flange seals - HCBBS Forum
42. Is the nitrogen added by the vacuum pump’s gas trap counted in the pumping volume? - HCBBS Forum
43. What type of valve is generally suitable for draining pipes? - HCBBS Forum
44. Acid addition to ion exchange membrane - HCBBS Forum
45. Looking to buy - HCBBS Forum
46. continuous ion exchange - HCBBS Forum
47. HG/T 21616-1997(2009) Standard Series for Silencers Used in Chemical Plants – Why It Was Abolished - HCBBS Forum
48. Can the Agilent 7820A be used with the N2000 workstation? - HCBBS Forum
49. Design issues in the filling area of liquor factories - HCBBS Forum
50. Vacuum concentration - HCBBS Forum
51. Is the heat release when preparing a 30% solution of solid sodium hydroxide in water the same as that when diluting a 60% sodium hydroxide solution to obtain a 30% solution of the same mass? - HCBBS Forum
52. Virtual Training on Wastewater Coagulation Treatment – Animation - HCBBS Forum
53. Methanol storage tanks also hold hydrochloric acid – can tanks with a steel lining and plastic interior be used? Is stirring needed as well? How is static electricity derived? - HCBBS Forum
54. New synthesis process for methyl p-hydroxyphenylglycinate - HCBBS Forum
55. Does the specific heat of a substance change with temperature, pressure, and other factors? - HCBBS Forum
56. When installing fixed fire pumps in the process production units of petrochemical enterprises, how should the cooling area be determined? I don’t see any relevant regulations in the petrochemical industry standards either; does anyone have any advice? - HCBBS Forum
57. May I ask if it is possible to adjust the set pressure of the safety valve on-site by oneself? What standard procedures are required? - HCBBS Forum
58. Aromatic stripping oil - HCBBS Forum
59. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (November 1) - HCBBS Forum
60. Do liquids or gases that have no explosive limit definitely cannot explode? - HCBBS Forum
61. Basic Process Knowledge (Multiple Choice) 20180426 - HCBBS Forum
62. Cobalt sulfate for aluminum removal - HCBBS Forum
63. [Mechanical Equipment Technology Edition] Daily Question 201709012: Refrigerator Maintenance - HCBBS Forum
64. What are the different design approaches for the venting system of hydrogen-rich gases? - HCBBS Forum
65. Chloride ion detection method - HCBBS Forum
66. Is it necessary to install a check valve on the nitrogen exhaust pipeline of the nitrogen sealing system? If I want to install one, what type of check valve should I choose to enable opening? - HCBBS Forum
67. 【Ten Years of Rapid Development in Chemical Engineering Equipment】Major breakthroughs were achieved in the pilot-scale research on flue gas sulfur production technology from 1990 to 2024 - HCBBS Forum
68. 【Weekly Topic】【Storage & Transportation Version 20170102】 - HCBBS Forum
69. May I ask about the distance between the outdoor equipment area of the factory building and the internal roads? - HCBBS Forum
70. Standards for oxygen content in the hydrogenation section - HCBBS Forum
71. 200,000-ton coal tar deep processing production line. Does anyone have any relevant technical materials on this topic? Please send me some so I can study it - HCBBS Forum
72. Should I make the tee myself (by digging a hole) or buy one ready-made? ? What are the advantages and disadvantages of each? - HCBBS Forum
73. One-to-one help office (the meaning of abbreviations such as pipes and fittings and technical issues) - HCBBS Forum
74. According to the provisions of GB-50058-1992, materials with a flash point greater than 45°C are not considered flammable liquids - HCBBS Forum
75. I would like to ask what are the common types of bottom valves for reaction vessels? - HCBBS Forum
76. Regarding the issue of adding concentrated sulfuric acid - HCBBS Forum
77. Ammonia synthesis, high-pressure ammonia separator, medium-pressure ammonia separator, temperature setting - HCBBS Forum
78. oxygen-to-fuel ratio - HCBBS Forum
79. MIIT recommends 10 energy-saving and carbon-reduction technologies for the petrochemical industry - HCBBS Forum
80. The impact of high specific gravity of the compressed air inlet on compressor performance - HCBBS Forum
81. Sharing of standards for chemical process design drawings - HCBBS Forum
82. 【Professional materials not disclosed by top-tier design institutes! [Save it quickly] - HCBBS Forum
83. Find the norm - HCBBS Forum
84. succinic acid - HCBBS Forum
85. Coalification process - HCBBS Forum
86. Light your match - HCBBS Forum
87. How to remove water in the first step from a 90% water-containing three-component azeotrope - HCBBS Forum
88. 【Standard Communication Version--One Question per Day】20170811 - HCBBS Forum
89. 【Daily Question】 【AC Version for Static Equipment...Question 20】 December 5, 2018 – True/False Multiple Choice...Enter to win a prize - HCBBS Forum
90. How to calculate the water content in gases; those who provide perfect answers will receive a large financial reward - HCBBS Forum
91. 【Frontiers in HaiChuan Chemical Technology】The oil-based sustainable aviation fuel (SAF) developed by East China Normal University has passed the testing - HCBBS Forum
92. In a process flow diagram, what does PFD stand for? - HCBBS Forum
93. Seek help: **Henry’s law constant of furan in water** - HCBBS Forum
94. Technical Manual for Handling Hazardous Chemical Accidents [by Zhou Xuezhi], 2010 edition - HCBBS Forum
95. Problems with steam ejectors - HCBBS Forum
96. Fundamentals of Manufacturing Processes (True/False Questions) 20170728 - HCBBS Forum
97. What happens when a large fan and a small fan are connected in series? - HCBBS Forum
98. Design pressure of equipment and pipelines - HCBBS Forum
99. 【Mechanical Equipment Technology Edition】Daily Question 20171206: Refrigeration Equipment (5) - HCBBS Forum
100. Advantages of safety heat exchanger (double tube sheet and double heat exchange tubes) - HCBBS Forum