English — Forum #723 (Page 615/642)

1. For water ring vacuum pumps, by using ethylene glycol instead of circulating water, by how much can the vacuum level be improved? - HCBBS Forum
2. Life Section: My Views on Famous Quotes – Part 1 - HCBBS Forum
3. Newbie report! How to get rich quickly! ? - HCBBS Forum
4. Daily Question June 30, 2015 (EIA Discussion): 3 Wealth points as a reward for replying, plus 5 Wealth points for a correct answer - HCBBS Forum
5. Communication between designers and product agents or manufacturers - HCBBS Forum
6. STN STL RING - HCBBS Forum
7. How to install a radar level gauge for the first time. . - HCBBS Forum
8. Help needed: the pH value of crude methanol is very low, around 4. I’m using a Topsoe MK-121 catalyst; I hope experts can give me some advice - HCBBS Forum
9. Summary of personal learning experiences on how to improve English skills! ! ! - HCBBS Forum
10. With the CS3000 system, the unit requires screen capture on a monthly basis, and it takes half an hour each time... - HCBBS Forum
11. What are the advantages and disadvantages of taking pressure readings inside and outside the self-acting pressure control valve, as well as before and after the valve? - HCBBS Forum
12. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 107 - HCBBS Forum
13. Selection of tube material for high-temperature shell and tube heat exchangers - HCBBS Forum
14. I wonder how many people have seen the spinning tower - HCBBS Forum
15. The two Siemens SCALANCE W788-1PRO wireless signal transmitters cannot establish a communication connection - HCBBS Forum
16. Seek overhaul plan for water-coal slurry gasification unit - HCBBS Forum
17. Fenton reaction tank and related reagent dosing - HCBBS Forum
18. Flue gas SO2 analyzer - HCBBS Forum
19. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 94 - HCBBS Forum
20. Seeking assistance regarding exhaust volume from power plants - HCBBS Forum
21. Differences between ammonia refrigeration and fluorine refrigeration - HCBBS Forum
22. During Safety Month, let’s take a look at the slogans – everyone can enjoy them together - HCBBS Forum
23. On the equilibrium curves of gas-liquid equilibrium - HCBBS Forum
24. Predicting and handling catalytic cracking accidents - HCBBS Forum
25. What precautions should be taken when using electromagnetic flowmeters? - HCBBS Forum
26. What’s the first thing you do when you get up in the morning? - HCBBS Forum
27. What is the purpose of the coating agent added to salt acid? What are the main components? - HCBBS Forum
28. I quit my job at CNPC and found a position in a private company, but it’s not ideal. I’m seeking advice from those who know more – thank you! - HCBBS Forum
29. Regarding how pneumatic diaphragm pumps regulate flow rate - HCBBS Forum
30. Is downward water quenching in shell available in China? - HCBBS Forum
31. Installation and maintenance of cast steel ball valves - HCBBS Forum
32. What is the function of a breathing valve? ! ! - HCBBS Forum
33. Types of reforming reactors and their comparison - HCBBS Forum
34. How to design the control method/control system - HCBBS Forum
35. Pressure vessel flange bolts - HCBBS Forum
36. How to adjust the pH value of acidic wastewater - HCBBS Forum
37. Analysis of the reasons for sudden shutdown due to excessive vibration in the turbine of a nitrogen pressure unit? - HCBBS Forum
38. Can a control valve achieve a pressure release rate of 0.7 MPa/min? - HCBBS Forum
39. What do process engineers in chemical plants do? What work should be done? - HCBBS Forum
40. Are gas chromatography activation and preheating the same thing? - HCBBS Forum
41. Unstable PLC current input - HCBBS Forum
42. Some things regarding the sulfuric acid sector - HCBBS Forum
43. Regarding the commissioning of storage tanks/buffer tanks - HCBBS Forum
44. I’m looking for a job related to humic acid testing; those who are interested, please apply. - HCBBS Forum
45. Industrial applications and failure cases of corrosion science and technology - HCBBS Forum
46. Why has no successful domestic technology been developed for the polycondensation and hydrogenation process of neopentyl glycol? - HCBBS Forum
47. PID regulator - HCBBS Forum
48. Selection of two five-way solenoid valves - HCBBS Forum
49. What should be done if a company fails to pay its employees’ wages? What can be done? - HCBBS Forum
50. Sharing on steam vacuuming systems - HCBBS Forum
51. Installation and principle of oil separation tanks - HCBBS Forum
52. HYSYS optimization of gas composition - HCBBS Forum
53. We are promoting microwave drying technology for lignite. Commercialized technologies in the United States - HCBBS Forum
54. There’s a problem with the XiBe actuator - HCBBS Forum
55. What are the general steps for pre-coating circulating cooling water? - HCBBS Forum
56. How are the solidified oil particles produced by suspended-bed hydrogenation generally treated? - HCBBS Forum
57. What is the CO conversion rate in syngas-to-oil production? - HCBBS Forum
58. Are there any friends who have worked with hollow glass microspheres? - HCBBS Forum
59. 【Daily Question】Chemical Engineering Principles 100: Extractants (July 5) (Double reward to celebrate reaching 100!) - HCBBS Forum
60. Under what circumstances in a circulating water system should the number of fans be increased or decreased to regulate the temperature of the circulating water? - HCBBS Forum
61. Three key considerations for the installation and use of planetary reducers - HCBBS Forum
62. Condensing turbines and backpressure turbines - HCBBS Forum
63. What is the difference between grease lubrication and oil lubrication? - HCBBS Forum
64. 【Daily Question】Principles of Chemical Engineering 099: Countercurrent Absorption at Low Concentrations (July 4) - HCBBS Forum
65. Has the registration for the specialty exam in chemical engineering begun? - HCBBS Forum
66. Personal views on the men’s basketball warm-ups - HCBBS Forum
67. Seek recommendations for hydrogen long-distance trailer transportation companies - HCBBS Forum
68. Is there negative pressure after the orifice flow meter, and does it affect the measurement results? - HCBBS Forum
69. What to do about rapid growth of sludge in aquaculture wastewater? - HCBBS Forum
70. Features and advantages of PSA hydrogen production technology - HCBBS Forum
71. How to quantitatively analyze crystalline water and intermolecular water - HCBBS Forum
72. Is it feasible to add a function for rotating images? - HCBBS Forum
73. Regarding logistics, should pressure be applied using a pump first or should heat exchange take place first? - HCBBS Forum
74. There is an error in the level controller of the circulating logistics unit – what’s the problem? - HCBBS Forum
75. What are the model specifications for pneumatic ball valves? - HCBBS Forum
76. What is the impact of fluorine-lined rotameters on the measurement range? - HCBBS Forum
77. In this weather, I sweat as soon as I move - HCBBS Forum
78. Which version of “Fluid Mechanics” is considered the most classic? ! - HCBBS Forum
79. I usually want to buy some hydrocracking and atmospheric/ vacuum continuous reforming units; where can I find them? - HCBBS Forum
80. Continuous reforming catalyst loading scheme (UOP) - HCBBS Forum
81. One question per week (8): Case studies for safety professionals - HCBBS Forum
82. What are the respective ranges for heavy metals in coking wax oil, desulfurized residue, and wax oil? - HCBBS Forum
83. 【Weekly Topic】20150706 What are the main aspects of heat loss in boilers? (Participation rewards available) - HCBBS Forum
84. Who can use HTRI to help me calculate a reboiler? - HCBBS Forum
85. Selection of biomass-fired boilers - HCBBS Forum
86. How to deal with oil entering the circulating water? - HCBBS Forum
87. Sulfur-resistant compressors and sulfur-resistant reheaters – are there any commercial products available? Seeking recommendations - HCBBS Forum
88. 【Daily Question】June 27: What type of sealing structure does a dry gas seal belong to? - HCBBS Forum
89. [Repost] To everyone striving for their dreams! - HCBBS Forum
90. Regarding the definition of \"pressure holding\" - HCBBS Forum
91. How to sign in in a micro-community - HCBBS Forum
92. What’s the use of the Economic Professional and Technical Qualification Examination? - HCBBS Forum
93. The function of the ammonia compressor unit - HCBBS Forum
94. What is the mesh size of the inlet filter for the gas compressor? - HCBBS Forum
95. Unit conversion for impact tests: kgf·m/cm2 to J - HCBBS Forum
96. Around the time of my son’s middle school entrance exams, my dad’s job - HCBBS Forum
97. Where has the general manager of the «Haichuan Irrigation Co., Ltd. Shop» gone? - HCBBS Forum
98. Working conditions of gear oil in gear reducers and its functions - HCBBS Forum
99. Looking back on these years, I have experienced all the hardships of life in society; starting from nothing, I managed to reach 300,000, and then from there to 2 million - HCBBS Forum
100. One question per day; those who answer correctly receive 8 wealth points, while participants receive 2 wealth points； Question 239 - HCBBS Forum