English — Forum #723 (Page 450/642)

1. What type of pumps are used for bottom extraction in 100,000 m³ crude oil tanks? How is it being used? Please give your advice - HCBBS Forum
2. The light components at the bottom of the distillation tower cannot be removed completely - HCBBS Forum
3. Replacing fuel boilers with gas boilers to reduce nitrogen oxide emissions - HCBBS Forum
4. The PID module of the DCS system? - HCBBS Forum
5. 【Daily Question No. 30】November 20, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
6. What is the typical cost of catalysts consumed in catalytic cracking recently? - HCBBS Forum
7. Question 95 on Boiler Foundations, November 20: (A certain score will be given to the top 50) - HCBBS Forum
8. Can coal-based olefins not satisfy immediate needs? - HCBBS Forum
9. Under what circumstances is it generally appropriate to consider elastic-plastic failure criteria in design? - HCBBS Forum
10. A thorough analysis of China’s methanol industry chain: on the brink of collapse! - HCBBS Forum
11. Problems in distillation column design - HCBBS Forum
12. Distillation column operation - HCBBS Forum
13. Sign-in record post from November 18, 2015 - HCBBS Forum
14. Do you really understand bearing grease lubrication and oil lubrication? - HCBBS Forum
15. What to do when you encounter scum? - HCBBS Forum
16. Guangdong Association of Fans explains how to solve the overload problem of Roots vacuum pumps - HCBBS Forum
17. I’m about to graduate, and I’ve contacted several chemical companies; please give me some suggestions - HCBBS Forum
18. Major issues in desulfurization design - HCBBS Forum
19. Everyone, work on question 71-2015 from the First-Class Constructor Examination’s \"Project Management\" section – there is a reward for those who answer it correctly - HCBBS Forum
20. Optimized operation of the vapor fraction deethanizer - HCBBS Forum
21. Security management “** general weapons” - HCBBS Forum
22. Division of responsibilities in the control room for lead smelting in bottom-blown furnaces - HCBBS Forum
23. Absorbent to oil and gas ratio. Also, why does the temperature at the top of the stabilizer increase, causing the pressure at the top of the tower to keep dropping automatically? - HCBBS Forum
24. What are hazardous operations, special operations, and the eight types of operations? - HCBBS Forum
25. Several issues regarding hydrogen production - HCBBS Forum
26. Common explosion-proof safety hazards of equipment in explosive hazard areas - HCBBS Forum
27. 2. Why is the change in temperature drop of the last reactor in reforming considered an important indicator of changes in the acidic activity of the reforming catalyst? - HCBBS Forum
28. What are the types of catalysts used in SCR? - HCBBS Forum
29. Slurry system operation - HCBBS Forum
30. Does aluminate have a significant impact on the biochemical systems used in wastewater treatment? - HCBBS Forum
31. I’m still not determined enough; please scold me to wake up - HCBBS Forum
32. 【Daily Question】Chemical Engineering Principles 240: Temperature of the Warm Ball (November 21) - HCBBS Forum
33. 20151124 One question per day - HCBBS Forum
34. Let’s discuss the Hysys textbook titled “Oil and Gas Processing Techniques and Calculations” - HCBBS Forum
35. On tea and meditation - HCBBS Forum
36. Equipment material classification - HCBBS Forum
37. Composition of the off-gas from the top of the HPF and other wet flue gas desulfurization regeneration towers - HCBBS Forum
38. 【Daily Question】November 17, 2015: Thin-walled container (2 wealth points for a reply + 3–8 additional wealth points if the answer is correct) - HCBBS Forum
39. There are so many types of valves – how much do you know about their characteristics and differences? - HCBBS Forum
40. 【Daily Question】Question from 20151120 - HCBBS Forum
41. Heat conversion problems - HCBBS Forum
42. Stop being confused; do the current work at hand to the best of your ability - HCBBS Forum
43. 【Popular Science on Polymers and Materials】--How much do you know about the polymers used in 35 types of skincare masks? +ljtjbx - HCBBS Forum
44. Relationship between the absorption efficiency of acid gas graphite falling film absorbers and the circulation pump - HCBBS Forum
45. Sinopec builds the largest diesel vehicle exhaust treatment fluid plant in Central China - HCBBS Forum
46. What are the requirements for the safety design of liquid ammonia pipeline areas? - HCBBS Forum
47. What is the most crucial difference between PLC systems and DCS systems at present? Please analyze - HCBBS Forum
48. 【Daily Question】Question from Issue 20151123 - HCBBS Forum
49. Safety technical measures for reaction vessels in fine chemical enterprises - HCBBS Forum
50. Please help translate something about 3D printing - HCBBS Forum
51. The risk of overcapacity in the propylene industry is emerging - HCBBS Forum
52. API600 ITP - HCBBS Forum
53. Amount of desulfurization and denitrification catalysts used in coking plants - HCBBS Forum
54. 【Picture of the Day】11.23: What type of pump is shown in the image above? Does anyone know? - HCBBS Forum
55. Hydrocracking orbital ball valve - HCBBS Forum
56. Wanfulong specializes in the production of pump and valve products – (API610, API685, API612) magnetic pumps, self-priming pumps, and centrifugal pumps for chemical processing applications - HCBBS Forum
57. What color of car is least likely to be involved in accidents? - HCBBS Forum
58. 【Daily Question】Question from Issue 20151117 - HCBBS Forum
59. How to distinguish between E+H conductivity meters - HCBBS Forum
60. Three-phase internal circulation biofilm treatment technology - HCBBS Forum
61. One must have a hobby, and it’s best to be a proper one. - HCBBS Forum
62. Request for bubble level gauge - HCBBS Forum
63. How to import the results of Hysys simulations, mainly the material balance tables, into AutoCad? - HCBBS Forum
64. 【Daily Question】Principles of Chemical Engineering: Absorption (November 20) - HCBBS Forum
65. 【Daily Question】Question from Issue 20151120 - HCBBS Forum
66. Ethylene glycol butylene glycol separation - HCBBS Forum
67. My grandfather - HCBBS Forum
68. Collect the on-site DCS screens of the Cryostar\Atlas\ACD expansion unit at the collection point - HCBBS Forum
69. Ten years of work, yet nothing in sight - HCBBS Forum
70. The “ecological balance” principle in China’s compressor industry - HCBBS Forum
71. How to remove dirt from the cooling tubes? - HCBBS Forum
72. Comprehensive List of Safety Facilities | Highly Practical - HCBBS Forum
73. Differences between closed-type cooling towers and open-type cooling towers - HCBBS Forum
74. (Basic knowledge) Can cyclone fluidized bed boilers experience \"deflagration\"? - HCBBS Forum
75. Since such hidden dangers exist, an explosion could occur at any time. What should be done? - HCBBS Forum
76. 【Daily Question】11.22 Multiple-choice question: If the compression ratio of a reciprocating compressor is too high - HCBBS Forum
77. In [HG/T20505-2014], what is the relationship between \"testing variables\" and \"triggering variables\"? - HCBBS Forum
78. Graphene oxide and cobalt oxide composite materials - HCBBS Forum
79. What kind of gasket is generally suitable for sulfuric acid pipelines? - HCBBS Forum
80. 20151121 One Question per Day - HCBBS Forum
81. (Basic knowledge) What is the critical fluidization velocity of a circulating fluidized bed boiler? - HCBBS Forum
82. How to motivate employees to ensure safe production? - HCBBS Forum
83. Does the condensate pipe of the heat exchanger need to be led close to the ground before a valve is installed there? - HCBBS Forum
84. Looking for a job in the gasification sector in Ningbo area - HCBBS Forum
85. On the influence of gas composition on compressor unit design - HCBBS Forum
86. Must the electric hoists in a factory be maintained by a qualified external service provider? - HCBBS Forum
87. Causes of turbine vibration - HCBBS Forum
88. Questions about selecting a model - HCBBS Forum
89. Several issues with ammonium carbonate crystals and their solutions? - HCBBS Forum
90. May I ask whether current coal-to-oil projects in China use indirect liquefaction or direct liquefaction processes? - HCBBS Forum
91. ABB Electromagnetic Flow Meter DL43F/004354 User Manual - HCBBS Forum
92. Kettle reboiler - HCBBS Forum
93. Environmental Protection Daily Question 11.21: Participate for prizes; 3 correct answers earn an additional 3 prizes - HCBBS Forum
94. Who can end the Warriors’ winning streak? Could it be the Lakers? - HCBBS Forum
95. Tips to reduce the maintenance costs of truck cranes - HCBBS Forum
96. Discussion on backflow when the circulation pump stops - HCBBS Forum
97. What is the difference between NO and NC for different switches? - HCBBS Forum
98. What form is most economical for the side filtration of circulating water? - HCBBS Forum
99. No cause can be found for the surging in a 40-ton negative-pressure coal-fired heating boiler; there is a video - HCBBS Forum
100. 【Daily Question No. 26】November 16, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum