English — Forum #723 (Page 607/642)

1. Determination of arsenic and lead content in catalytic reforming feedstocks, at the ppb level - HCBBS Forum
2. Specific procedures for anti-corrosion in diesel storage tanks - HCBBS Forum
3. Is what’s inside the dike of the tank area in the plant area considered rainwater or wastewater? - HCBBS Forum
4. Wake up! ! Got up - HCBBS Forum
5. After running for 4-6 hours, a 45KW deep well pump shuts down suddenly without any apparent reason. What could be the cause? - HCBBS Forum
6. The pH value of the demineralized water in our plant has suddenly increased; I’m not sure what the cause is What are the hazards? - HCBBS Forum
7. Common types of planetary gear reducers - HCBBS Forum
8. I have a graduation defense today, and there are a few questions I’d like to ask everyone - HCBBS Forum
9. Problems with the installation of pressure instruments - HCBBS Forum
10. Problems in atmospheric tower operation. - HCBBS Forum
11. Why is the liquid level in the regenerated lean liquid storage tank continuing to rise? Measures? - HCBBS Forum
12. 【Serial】The Growth Story of a Chemical Engineering Designer-49 - HCBBS Forum
13. Dinghua Haichuan Cup – Award Ceremony for Outstanding Technical PPTs in June 2015 - HCBBS Forum
14. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 103 - HCBBS Forum
15. It’s a sunny day with a blue sky and white clouds – how can water stickers be missing? That’s right, water stickers! - HCBBS Forum
16. Seeking information on practices and technical modification controls related to new emission standards for sulfur recovery - HCBBS Forum
17. What should be the temperature in the station room for COD online monitoring equipment? - HCBBS Forum
18. The mechanical seal of our chilled water pump keeps leaking; I don’t know what the reason is - HCBBS Forum
19. 【Daily Question】Regarding dust explosions (2 wealth points for replies, 3-5 wealth points for detailed answers) - HCBBS Forum
20. 【Daily Question】Basic knowledge of coking: +6 wealth for correct answers, +2 wealth for participation. Question 1 from 201507 - HCBBS Forum
21. 2014 Professional Knowledge Morning 52 - HCBBS Forum
22. What material should be used for the needle valve in highly saline environments? Is it feasible to use an electric actuator for control? - HCBBS Forum
23. What certificates are there in the pressure vessel industry? What qualifications are required for each? ? - HCBBS Forum
24. Enjoy the pain that cannot be avoided - HCBBS Forum
25. What are the symptoms when there is a fault in the actuator of a control valve? - HCBBS Forum
26. Please, experts, advise on methods for separating two substances with similar boiling points - HCBBS Forum
27. 【Production Region】Technical Team Promotion Application for July 2015 - HCBBS Forum
28. (Daily Question) What are the pathways through which occupational disease hazards enter the human body? - HCBBS Forum
29. LNG tank truck piping diagram and instructions - HCBBS Forum
30. Is being a boiler operator a very menial job? - HCBBS Forum
31. Questions regarding carbonization - HCBBS Forum
32. The gas-liquid separator has an emergency drainage line that extends downward inside the tank; why is that? - HCBBS Forum
33. The latest and most practical technologies for ammonium-based desulfurization - HCBBS Forum
34. What is the typical value when the flow rate of the hydrocracking feed oil is at low-low level? - HCBBS Forum
35. Messi = no chance? Was Argentina completely defeated? Is that true? - HCBBS Forum
36. I’ve had my registered chemical engineer certificate for a year now! Not used! ! - HCBBS Forum
37. Method for the colorimetric analysis of methanol - HCBBS Forum
38. The impact of peak-and-valley operation on the electrolyzer - HCBBS Forum
39. Provides calculations for mixing power, pressure vessel strength, etc - HCBBS Forum
40. Material selection when the fluid chlorine content reaches 260,000 ppm - HCBBS Forum
41. 8 years of work experience in instrumentation and automation, ASE engineer, seeking a job - HCBBS Forum
42. Why can’t the Jiangsu GreenTong S4000TH-II set a high alarm level? - HCBBS Forum
43. What are the hazards of too high a flash point for aviation fuel? - HCBBS Forum
44. Temperature transmitter selection? - HCBBS Forum
45. Discussion on elbows. - HCBBS Forum
46. 【Daily Question】**Harm of chemicals to the human body – Reply: +2 points for correct answer, +3 points on June 25th - HCBBS Forum
47. Discuss the current situation of some designers - HCBBS Forum
48. On the selection of packing for gas separation towers - HCBBS Forum
49. What material should be used for 20% fuming sulfuric acid reaction reactors? - HCBBS Forum
50. Installation locations for UPS power supplies - HCBBS Forum
51. Operation status of the MTO unit at Yangmei Hengtong - HCBBS Forum
52. The principle of synchronous motors - HCBBS Forum
53. Shutdown handling of catalytic unit - HCBBS Forum
54. Vibration problems in high-speed pumps - HCBBS Forum
55. Association-issued **question set P5, multiple-choice questions 1-6 - HCBBS Forum
56. How much temperature can a 1-meter-long stainless steel pipe lower? - HCBBS Forum
57. Does the inter-stage cooling water stop flowing after the compressor is shut down? - HCBBS Forum
58. Looking for fuel and gas boiler drawings - HCBBS Forum
59. Recruiting professionals in boiler technology and related fields - HCBBS Forum
60. Boiler firing and operation methods - HCBBS Forum
61. How to quickly reduce the COD level in fluoride-containing wastewater - HCBBS Forum
62. Considerations when selecting fuses - HCBBS Forum
63. Liquid entrainment problem in centrifugal compressors - HCBBS Forum
64. Why does a sudden increase in the pressure of a distillation column lead to an increase in the temperature at the bottom of the column? And why does an increase in pressure result in an increase in the temperature at the top of the column? - HCBBS Forum
65. On the oxidation problem in the storage of caprolactam - HCBBS Forum
66. Recently, there have been heavy downpours, resulting in high water levels and pressure; therefore, submersible level gauges for communication and output purposes have been deployed in large numbers at the front line. . . - HCBBS Forum
67. 【Daily Question】Chemical Engineering Principles 098: Pulsed Filtration Operation (July 3) - HCBBS Forum
68. When will the economic situation improve? ? - HCBBS Forum
69. Dear sailors, may I ask - HCBBS Forum
70. SHF0001—90 Method for Determining the Efficiency of Tubular Furnaces in Petrochemical Processes - HCBBS Forum
71. How are the gas cylinders of liquefied hydrocarbon samplers managed and inspected? Help needed - HCBBS Forum
72. Hybrid raw water heater - HCBBS Forum
73. What are the characteristics of silicone rubber products? - HCBBS Forum
74. The control valve just won’t manage to regulate the oven temperature properly; could everyone help analyze the reasons? - HCBBS Forum
75. Can ethylene react with acidic potassium permanganate under certain conditions to be oxidized into acids or alcohols? - HCBBS Forum
76. Can PONA be used in Aspen Plus to analyze data and define the properties of naphtha materials? - HCBBS Forum
77. Please provide a paragraph that needs to be translated smoothly. Thank you! - HCBBS Forum
78. Heat exchange area of floating-head heat exchangers - HCBBS Forum
79. Challenges related to dynamic sealing - HCBBS Forum
80. Solutions regarding the use of safety belts for work at heights. - HCBBS Forum
81. Isomerization of butylene to isobutylene - HCBBS Forum
82. Problems with the oil collection tank in the middle section of the vacuum tower - HCBBS Forum
83. Aspen 8.6 installation issues - HCBBS Forum
84. Note: Chemistry 2014 – Professional Knowledge 20 - HCBBS Forum
85. Is everything inside the device in order? Outer Qi? - HCBBS Forum
86. Analysis methods and errors for removing trace amounts of benzene, naphthalene, and tar from coke oven gas - HCBBS Forum
87. Labor quota for chemical processing workshops - HCBBS Forum
88. Sulfur recovery flue gas is fed into the desulfurization tower (ammonia wet desulfurization) - HCBBS Forum
89. Seeking help: Job search with many years of experience in methyl methacrylate (MMA) - HCBBS Forum
90. Regarding the principle and application scope of pipe coolers - HCBBS Forum
91. What are the new types of styrene polymerization inhibitors? Which type of inhibitor is better at the moment? - HCBBS Forum
92. Layout of small springs in coke ovens - HCBBS Forum
93. Technical conditions acceptable to GOGC, such as TY26-07-1450-96 - HCBBS Forum
94. Yanbian Petrochemical Baoding Petrochemical Plant’s 200,000 tons/year asphalt blending unit - HCBBS Forum
95. A420 WPL6 can completely replace A234 WPB - HCBBS Forum
96. Mechanical seal leakage, O-ring - HCBBS Forum
97. The motor arrived at the factory, and the system was successfully started up - HCBBS Forum
98. What are the key points for inspecting safety valves, glass plate level gauges, and mechanical vent valves? - HCBBS Forum
99. Help needed with paraffin chloride 52! ! - HCBBS Forum
100. Find the physical property parameters of a mixed gas - HCBBS Forum