English — Forum #723 (Page 384/642)

1. 　Only by being the best version of yourself can you bring out the best in others! - HCBBS Forum
2. 【Daily Question】1.15 Multiple-choice question: At what concentration of H2S can it be fatal? . - HCBBS Forum
3. 【Daily Question No. 69】January 19, 2016: +2 wealth for participation, +3 additional wealth for a correct answer - HCBBS Forum
4. Valve spectral analysis - HCBBS Forum
5. Production cost per cubic meter of oxygen - HCBBS Forum
6. There will be sediment in diesel tanks over time; how to clean it? - HCBBS Forum
7. Is the type of gasket for the drain flange the same as that of the flange gasket on the pipeline? - HCBBS Forum
8. The automatic thread-cutting device on the Newland sewing machine is not functioning - HCBBS Forum
9. 【Daily Question】1.12 What is a double layer? (3 wealth points for a reply + additional 3–8 wealth points if the answer is correct) - HCBBS Forum
10. 【Daily Question】2016 1.13 Multiple-choice question Which of the following options is not a typical device in the distillation system of a hydrogenation unit?.. - HCBBS Forum
11. “Announcement for the award ceremony of the “Discussion on Key Examination Points in Chemical Engineering” event – 【Distillation】 theme - HCBBS Forum
12. Acetic anhydride storage - HCBBS Forum
13. 【Daily Question】 January 25th: Large reactor capacity, what is the conversion rate? ? ? ? - HCBBS Forum
14. If the reading of the pressure-transmitted level gauge on a given day is higher than that of the previous day, what could be the reason? - HCBBS Forum
15. The future of the coking industry - HCBBS Forum
16. 【Daily Question No. 71】January 21, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
17. In the AO nitrogen removal process, what reaction is used in stage O to remove COD, and what serves as the carbon source for the nitrification reaction? Solve - HCBBS Forum
18. Question: What are the melting and boiling points of sulfur in an HF environment? - HCBBS Forum
19. How to maintain lithium bromide units in winter - HCBBS Forum
20. What are the qualification requirements for personnel responsible for filling liquid products in air separation plants? - HCBBS Forum
21. Longitudinal crack in membrane wall - HCBBS Forum
22. Reciprocating compressor issues - HCBBS Forum
23. At the initial preparation of the amine solution, at what temperature does crystallization occur? - HCBBS Forum
24. Related to temperature and pressure reducers - HCBBS Forum
25. Sulfur production furnace ash wall - HCBBS Forum
26. Mechanical seal and external insulation for internal floating roof tanks - HCBBS Forum
27. 【Picture of the Day】2016 1.16 What task are the workers and craftsmen carrying out? - HCBBS Forum
28. Excessive nickel ions - HCBBS Forum
29. Hotspot issues in diesel hydrocracking reactions - HCBBS Forum
30. Connection method between the steam turbine and the main fan - HCBBS Forum
31. What are the differences and advantages between vector control and V/F control in inverters? - HCBBS Forum
32. 【Daily Question】January 19, 2016: Participation = +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
33. Who has used the 10KV single-phase ground fault management system? - HCBBS Forum
34. Haichuan Gratitude Season – Master Zhou, the mentor who introduced me to the factory【Production Area 006】 - HCBBS Forum
35. Circulating water cooling tower fan reducer - HCBBS Forum
36. How long can PAC solution be stored before it can no longer be used? - HCBBS Forum
37. Coking, start up - HCBBS Forum
38. Distillation tower pressure heat bypass control - HCBBS Forum
39. 【Daily Question】January 20, 2016: Which of the following statements is correct? (First 50 replies + 2 points; an additional 3–8 points for correct answers...) - HCBBS Forum
40. Urgently seeking two intermediate road and bridge engineers. Good salary available; payment is made at the end of the year. Those interested, please contact me - HCBBS Forum
41. Aspen results show - HCBBS Forum
42. Heat transfer oil furnace - HCBBS Forum
43. Design operating conditions for gasoline and naphtha hydrogenation - HCBBS Forum
44. 【Daily Question】1.22 Fill-in-the-blank question: The purpose of installing a top circulation reflux system in a vacuum distillation unit is ( ), to facilitate heat recovery. - HCBBS Forum
45. On-site PLC control, central DCS control - HCBBS Forum
46. Selection issues for steam traps with back pressure - HCBBS Forum
47. Calculation method for the output power of exhaust-condensing steam turbines - HCBBS Forum
48. What are the regulations regarding the design of floor drains on the platform infrastructure (heat exchangers, storage tanks, towers)? - HCBBS Forum
49. The issue of temperature drop in steam pipes - HCBBS Forum
50. How is the stroke length of a diaphragm nitrogen compressor determined? - HCBBS Forum
51. In what situations are floating roof tanks, spherical tanks, horizontal tanks, and vaulted roof tanks used respectively? - HCBBS Forum
52. What are the differences and application scenarios between radio frequency admittance and fork-type level switches? - HCBBS Forum
53. Bottom-blown furnace process - HCBBS Forum
54. How to perform PONA analysis on gasoline fractions containing liquefied gas components - HCBBS Forum
55. Pipeline pressure drop issue - HCBBS Forum
56. Environmental Protection Daily Question 1.17: Participate for a prize; 3 correct answers earn an additional 5 as a reward - HCBBS Forum
57. 【Daily Topic】【Civil Engineering Version 20160121】 - HCBBS Forum
58. How to adjust if the levelness of the tray support ring is out of spec? - HCBBS Forum
59. The value of oxygen-containing organic compounds in the Fischer-Tropsch reaction water - HCBBS Forum
60. 【Gas Phase】Gas fractionation unit - HCBBS Forum
61. The electrophoresis wastewater has mixed with the degreasing wastewater, and the treated water is very turbid. What should be done? - HCBBS Forum
62. Structure of floating oil collection in homogenization tank and methods for modification - HCBBS Forum
63. Application of silicon carbide ramming material in the water wall of coal chemical gasification furnaces - HCBBS Forum
64. What is the average particle size of coal powder used in pulverized coal gasification? - HCBBS Forum
65. 20160121 One Question per Day - HCBBS Forum
66. What are some delicious foods to try in Shandong? - HCBBS Forum
67. What material should be used for the O-rings of the gas and liquid phase transfer lines for propylene unloading? - HCBBS Forum
68. Sign-in record post from January 16, 2016 - HCBBS Forum
69. Shipment flow rate - HCBBS Forum
70. One day I went out without my phone, and then... - HCBBS Forum
71. What are some of the better National IV gasoline desulfurization processes available in China currently? - HCBBS Forum
72. 【Daily Question】 January 20: Increased amount of slurry reprocessing – what about the regeneration temperature? - HCBBS Forum
73. A comprehensive overview of 31 coal/methanol-to-olefins projects: Which technologies are superior, domestic or international? - HCBBS Forum
74. Corrosivity of solid sulfur - HCBBS Forum
75. About PLC learning* - HCBBS Forum
76. Metallurgy of molybdenum-vanadium-nickel spent catalysts - HCBBS Forum
77. Aircraft escape slide - HCBBS Forum
78. Material of the anti-slip plate in fixed intermittent gas generation furnaces - HCBBS Forum
79. Cost issues of MVR evaporation units - HCBBS Forum
80. May I ask how long the plunger life of a three-cylinder pump is in phosphatic ammonia production? - HCBBS Forum
81. High-pressure stop valve sealing test - HCBBS Forum
82. Thermocouple problem - HCBBS Forum
83. Calculation of heat exchanger tube box shell - HCBBS Forum
84. Solution of circulating water parameters - HCBBS Forum
85. Which expert in the company has this technology? I would appreciate your guidance - HCBBS Forum
86. Looking for contact information for the Denisk melt pressure sensor - HCBBS Forum
87. Are there standards for special parts of US standards? - HCBBS Forum
88. I would like to ask everyone for advice - HCBBS Forum
89. What analyses should be conducted before starting the burner in conjunction with the gasifier when it is not in operation? - HCBBS Forum
90. Haichuan Thanksgiving Season — The Master-Apprentice Bond Grown in the Desert [Mechanical Zone 007] - HCBBS Forum
91. Gas absorption - HCBBS Forum
92. What causes the circulating water concentration ratio not to increase? It’s always been around 2. - HCBBS Forum
93. Acrylic resin transfer pump - HCBBS Forum
94. Are there any books on equipment and pipeline cleaning and disinfection? - HCBBS Forum
95. Refined brine from saturated brine in salt pans - HCBBS Forum
96. 【Daily Question】2016.1.24 Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
97. The oil turned black after being distilled in the tower. What’s the reason? How to break it? - HCBBS Forum
98. How important is dad? Just read this article and you’ll know! - HCBBS Forum
99. “\"HaiChuan Thanksgiving Season\" -- Friends Across Generations【Production Area 005】 - HCBBS Forum
100. Using hydrogenation of nitrobenzene to produce ***, the waste acid exhibits abnormal gas evolution, nitro smoke emission, and rising temperature - HCBBS Forum