English — Forum #723 (Page 524/642)

1. Overheating problem of the working fluid in liquid jet pumps - HCBBS Forum
2. 【Summer Production Period】---- Production regions enter the “Intensive Training during the Hot Summer Days” mode (selection results and award announcement post) - HCBBS Forum
3. Is it still interesting to leak exam questions? - HCBBS Forum
4. The lifting height of a tower crane is determined by the luffing mechanism - HCBBS Forum
5. Solve - HCBBS Forum
6. Transfer of new energy design company - HCBBS Forum
7. How to heat treat 13MnNiMoR+s30408 materials? How to conduct flaw detection? - HCBBS Forum
8. Are there any Haiyou from Ningxia Petrochemical? - HCBBS Forum
9. Technical comparison of SMTO+OCC, UOP MTO+OCP, DMTO+OCU, and DMTO-2 - HCBBS Forum
10. Seeking advice on removing acetaldehyde from ethanol - HCBBS Forum
11. I heard that a PX plant is to be built in Zhaoyuan, Yantai, Shandong - HCBBS Forum
12. Dirt thermal resistance - HCBBS Forum
13. Seam welding - HCBBS Forum
14. Calculation of heat exchange area for waste heat from flue gas in heat transfer oil furnaces - HCBBS Forum
15. 【Daily Question】Question from Issue 20150921 - HCBBS Forum
16. It is recommended to create a section for SAD learning exchanges - HCBBS Forum
17. The ammonia nitrogen level in the water purified by acidic vapor stripping is above the standard - HCBBS Forum
18. 【Daily Question】Question from Issue 20150922 - HCBBS Forum
19. The high-tower melt granulator – which category of granulators does it belong to? - HCBBS Forum
20. Desalination of normal paraffinic naphtha - HCBBS Forum
21. Under what circumstances can double flanges be used without being relocated? - HCBBS Forum
22. Morning update on Shandong’s local refining market (20150921) - HCBBS Forum
23. n-butane isomerization - HCBBS Forum
24. The working medium in reciprocating compressors is coke oven gas; how should the oil be removed from the wastewater generated during the compression process? - HCBBS Forum
25. Issues related to the alkali tank for chlorine absorption - HCBBS Forum
26. Should women sacrifice their career aspirations for the sake of their family? - HCBBS Forum
27. Wastewater treatment - HCBBS Forum
28. September 15: Boiler Foundation, Question 32 – True/False Questions 4: (A certain score will be given to the top 40 participants) - HCBBS Forum
29. Impact of reduced flow rate during pump operation on the pump - HCBBS Forum
30. What should be noted when chemically cleaning copper tube heat exchangers? Do scale and corrosion inhibitors have a significant impact? - HCBBS Forum
31. Seeking advice on operational issues with screw air compressors - HCBBS Forum
32. Why is helium used instead of nitrogen for the leak test of manufacturing tower equipment before it leaves the factory? - HCBBS Forum
33. How is emissions trading defined? - HCBBS Forum
34. I would like to ask the experts about the gas valve assemblies on boiler gas pipelines! ! ! ! ! ! ! ! ! ! ! ! ! ! !!! - HCBBS Forum
35. Phosgene is produced by reacting gas with chlorine; how often does the activated carbon need to be replaced? - HCBBS Forum
36. Who has tasted authentic Yangzhou stir-fried dried tofu? - HCBBS Forum
37. Pressure drop problem in absorption packed towers - HCBBS Forum
38. Continuous reforming regeneration pressure - HCBBS Forum
39. 【Daily Question】Chemical Engineering Principles 181: Calculation of Packing Layer Height (September 23) - HCBBS Forum
40. What about the classification of pressure vessel categories when there are multiple working media? - HCBBS Forum
41. How to simulate extraction in pro2? - HCBBS Forum
42. Regarding C5, C6 isomerization - HCBBS Forum
43. Where can I find the assembly diagram for the hand hole? - HCBBS Forum
44. The issue of analyzing heavy aromatic hydrocarbons in hydrogen peroxide produced by the anthraquinone method - HCBBS Forum
45. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 176 - HCBBS Forum
46. I’m confused; can I still go down this path, and how? - HCBBS Forum
47. While admiring its \"luxurious and high-class\" qualities, further evidence is needed. - HCBBS Forum
48. American MTT Classic pneumatic torque wrench – Exclusive distributor in China - HCBBS Forum
49. What are the specific devices used in the human-centered design of bridge-type cranes? - HCBBS Forum
50. In the event of an emergency power outage, should the electrolyzer be sealed with brine or fresh water? - HCBBS Forum
51. Pre-sulfiding temperature of hydrogenation catalyst - HCBBS Forum
52. Newbie seeking help: What are the functions of medium-pressure nitrogen in a hydrogenation unit? - HCBBS Forum
53. What precautions should be taken when moving a mobile crane? - HCBBS Forum
54. How does an excessive ammonia level in low-temperature methanol washing lead to an excessive sulfur level in the system? - HCBBS Forum
55. Looking for manufacturers of packing seals for stirred-tank reactors - HCBBS Forum
56. Application examples of wide-channel plate heat exchangers in oil fields - HCBBS Forum
57. I have asked about the issues related to heating with superheated steam and dry saturated steam - HCBBS Forum
58. Relationship between the cooling efficiency of the inter-stage cooler in air compressors and machine vibration - HCBBS Forum
59. What are the groove dimensions of the DRD thin combined seal developed by Dongsheng? - HCBBS Forum
60. Help: The filtration capacity of an air filter is given in cubic units; how can this be converted to cubic units of working pressure? - HCBBS Forum
61. Non-destructive testing of welds on site - HCBBS Forum
62. Turbine low-pressure valve - HCBBS Forum
63. Who has the SH3521-2013T Technical Specifications for the Construction of Petrochemical Instrumentation Projects? - HCBBS Forum
64. Welding procedure qualification - HCBBS Forum
65. Online analysis of the excess alkali content in brine - HCBBS Forum
66. Does tank manufacturing involve selling technology or labor? - HCBBS Forum
67. September 14: Boiler Basics Question 31 – True/False Questions 3: (A certain score will be given to the top 40) - HCBBS Forum
68. Sign-in record post from September 21, 2015 - HCBBS Forum
69. 【Daily Question】Chemical Engineering Principles 173: Equilibrium Moisture (September 15) - HCBBS Forum
70. 【Daily Question】Question from Issue 20150921 - HCBBS Forum
71. What are the advantages and disadvantages of mixed-bed reactors compared to double-bed reactors? - HCBBS Forum
72. Why are the flanges at the liquid discharge and exhaust ports of the heat exchanger of type WN? - HCBBS Forum
73. How is the sludge generated by the Fenton reaction calculated or estimated? - HCBBS Forum
74. Can the thickened section of the shaft-type lug be replaced with a reinforcement ring? ? ? - HCBBS Forum
75. 【Daily Question】Chemical Engineering Principles 180: Separation Operations (September 22) - HCBBS Forum
76. What are the pressure and temperature of the steam condensate from 0.6MPa saturated steam after passing through the steam trap? - HCBBS Forum
77. Analysis of the three most common causes of crane hook drops - HCBBS Forum
78. Sign-in record post from September 18, 2015 - HCBBS Forum
79. Coking desulfurization tower - HCBBS Forum
80. What are the adverse effects of fuel coking on gasification? - HCBBS Forum
81. Pipes and cable trays need to be installed in the firewall; can holes be drilled directly? Or embedded pipes? - HCBBS Forum
82. Can I take the certification exam? - HCBBS Forum
83. Describe the coal feeding process of the Luchie furnace? - HCBBS Forum
84. Polyethylene glycol 400 - HCBBS Forum
85. What software is used to create renderings of wastewater treatment systems? - HCBBS Forum
86. What exactly does the term “guidance” mean in the context of control valve types? - HCBBS Forum
87. Online Application System for Technical Transformation Projects in Shandong Province - HCBBS Forum
88. 【Daily Question】Question from Issue 20150921 - HCBBS Forum
89. What on a crane must not be modified without permission - HCBBS Forum
90. I have just graduated and am working at a skid-mounted equipment company; I have been learning gas design and would appreciate some guidance from experts - HCBBS Forum
91. Formula for designing the diameter of steam pipes - HCBBS Forum
92. Emerson Headhunting Company – Urgently seeking application technicians - HCBBS Forum
93. What is the reason for the increase in hydrogen sulfide after the gas passes through the anhydrous ammonia absorption tower? - HCBBS Forum
94. During the disassembly and inspection of the piston in the first-stage compression cylinder of the reciprocating compressor, it was found that the wear in the outer support ring groove had increased by 10 mm; there were... in the piston ring grooves. - HCBBS Forum
95. Home Life Edition Debate Thread, Issue 30: Is it necessary to require real-name registration for mobile phone SIM cards? (Replying participates +3 wealth points) - HCBBS Forum
96. How to calibrate an absolute pressure gauge transmitter?» - HCBBS Forum
97. Cooling issues for high-temperature pump bearing housings - HCBBS Forum
98. Prices for Bently PERFORMANCE and Decision Support software - HCBBS Forum
99. What type of check valve is suitable for exhaust pipes under several thousand pascals? - HCBBS Forum
100. Fundamentals of Chemical Engineering - Physical Chemistry - HCBBS Forum