English — Forum #723 (Page 411/642)

1. Please provide examples of outstanding employees; individual stories are also acceptable - HCBBS Forum
2. The environmental impact assessment for the Shenhua coal direct liquefaction project was completed successfully - HCBBS Forum
3. Can a pump actually transport live fish? ! - HCBBS Forum
4. What are the regulations regarding the turning of centrifugal oil transfer pumps? - HCBBS Forum
5. Can EDTA undergo complexation reactions under acidic conditions? - HCBBS Forum
6. Material selection for equipment - HCBBS Forum
7. Experts in low-temperature methanol washing, please come and analyze it - HCBBS Forum
8. 【Daily Question No. 84】December 25, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
9. Questions about internal olefins - HCBBS Forum
10. Water vapor in the air - HCBBS Forum
11. Who drew the logic diagram? - HCBBS Forum
12. Necessary measures to take in the event of a landslide - HCBBS Forum
13. Can a plate and frame filter press be modified? - HCBBS Forum
14. What type of mechanical seal is used for solid-containing liquid pumps? - HCBBS Forum
15. 【Daily Question】12.22 Multiple-choice question: Which type of material for equipment is suitable for storing sodium hypochlorite? ( ) - HCBBS Forum
16. Have any of you used the chemicals provided by Beijing Aobo Water Treatment Co., Ltd.? - HCBBS Forum
17. Amino acids - HCBBS Forum
18. A problem with distillation - HCBBS Forum
19. What are the standards for determining the height of the high-level oil sump in a turbine-compressor unit? - HCBBS Forum
20. If there is no nitrogen on site but the amount required is not large, how should this be addressed? What are the ways to obtain nitrogen? Thank you! - HCBBS Forum
21. Operational flexibility load of air separation - HCBBS Forum
22. Issue of methanol washing consumption during the commissioning of MTBE plants - HCBBS Forum
23. Fault in E+H ultrasonic flowmeter - HCBBS Forum
24. Orifice plate flow meters are used for liquid nitrogen - HCBBS Forum
25. 【Daily Question】Wastewater Knowledge - 12.27 (2 points for answering, 5 points for a correct answer) - HCBBS Forum
26. Hydrogenation cycle compressor inlet separator tank for catalytic reforming pretreatment - HCBBS Forum
27. Plex Southern Region is hiring mechanical engineers - HCBBS Forum
28. What is the relationship between the outer diameter of seamless steel pipes and their nominal diameter? - HCBBS Forum
29. ASPEN V8.6 Installation - HCBBS Forum
30. 【Daily Question】12.27 Short-answer question: Reasons for changes in the dry point of gasoline - HCBBS Forum
31. Urgent! Urgent! Urgent! ! There are reports on-site of steam over-temperature issues; let’s see what can be done, any good suggestions? - HCBBS Forum
32. Today is Mao’s birthday - HCBBS Forum
33. Petrol and diesel hydrogenation catalysts - HCBBS Forum
34. 【Mechanical Area】Pumps to be Shut Down for Winter Shutdown【007】 - HCBBS Forum
35. 【Daily Question No. 52】December 24, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
36. How to calculate the wall thickness of a partition cylinder - HCBBS Forum
37. Civil Engineering Structure Discussion Area ----【Daily Question】Question from the 20151218 issue - HCBBS Forum
38. Is there any instrument specifically designed to measure the concentration of alkaline solutions, one that can indicate the percentage content (%)? - HCBBS Forum
39. Which is more cost-effective: putting a distillation tower into operation or the energy consumption costs? - HCBBS Forum
40. Is Christmas considered overtime? - HCBBS Forum
41. What does it feel like not posting for a few days? - HCBBS Forum
42. Why does the rotor speed increase after load shedding? - HCBBS Forum
43. 【Daily Question】12.23 Classification of metal corrosion (Reply +3 points; correct answer +3–8 points) - HCBBS Forum
44. Process calculation and selection for chemical units-----Heat exchangers - HCBBS Forum
45. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151221 issue - HCBBS Forum
46. Which pipes require pipe supports - HCBBS Forum
47. Reasons for the fracture of the main shaft in liquid ring vacuum pumps - HCBBS Forum
48. 【Daily Question】December 21, 2015 – Boiler Basics True/False Questions (3 wealth points for replying; +3 to 8 additional wealth points for correct answers) - HCBBS Forum
49. Why is the hose at the bottom of the electrolyzer from Asahi Kasei coiled into a loop before being connected to the main pipe? ? ? ? - HCBBS Forum
50. Welding issues in heat treatment equipment - HCBBS Forum
51. Five \"key words\" of coal-to-oil production in China in 2015” - HCBBS Forum
52. expansion joint - HCBBS Forum
53. Design of vacuum pumps for vacuum flash evaporation - HCBBS Forum
54. Is there an industry specification table for the length of thermistor thermometers? - HCBBS Forum
55. What is counter-current operation in a heat exchanger? - HCBBS Forum
56. Is so-called super regeneration of molecular sieves still necessary nowadays? - HCBBS Forum
57. What is the difference between coagulants, flocculants, and coagulation aids? Can they all be referred to as coagulants, after all, they are all used in the process of coagulation and sedimentation? - HCBBS Forum
58. Xinjiang Jingheyuan: 280,000 tons of high-purity silicon in Phase 1, and 120,000 tons of silicone in Phase 2 - HCBBS Forum
59. Effect of tower pressure changes on components. - HCBBS Forum
60. Request an analysis and introduction: the meanings and differences between pipe racks, pipe clamps, pipe supports, pipe holders, and pipe hangers - HCBBS Forum
61. Have you seen a high-flow, high-temperature pump fail to start? It won’t rotate – what should I do? - HCBBS Forum
62. The sofa layer no longer serves any purpose; can it be removed? - HCBBS Forum
63. How does the valve position of the on-site control valve change in the event of a DCS crash? - HCBBS Forum
64. 【Daily Question】Chemical Engineering Principles 267: Boiler Feed Water Quality (December 18) - HCBBS Forum
65. Help: Solving the problem of the wastewater from power plant desulfurization turning into a paste after Mg(OH)2 precipitation - HCBBS Forum
66. What is the small square steel plate welded on top of the boiler drum? - HCBBS Forum
67. A Brief Discussion on Safety Management in Chemical Enterprises - HCBBS Forum
68. Does the Association version of the Chemical Engineering Examination have solutions to the questions? - HCBBS Forum
69. Review and Outlook of Coal (Syngas)-Based Ethylene Glycol Production in China in 2015 - HCBBS Forum
70. Problems occurred during the installation of V8.6 - HCBBS Forum
71. Expansion tank and sump for heat transfer oil furnace accessories - HCBBS Forum
72. Resending 【One Question per Day】12.18 True or False Question: Steam-driven reciprocating pumps are generally controlled in terms of flow rate using outlet flow control - HCBBS Forum
73. Effect of silica content in the coarse slag on slag morphology - HCBBS Forum
74. What is the typical heavy space-time velocity in the catalytic cracking industry, and what is its range? - HCBBS Forum
75. Seeking assistance with 3C product certification - HCBBS Forum
76. Thermally stable salt removal facility for solvent regeneration - HCBBS Forum
77. 【Daily Question】12.19 Multiple-choice question: The damage caused by overpressure is ( ) - HCBBS Forum
78. 【Basic Knowledge 18】Briefly explain the differences between cathodic protection and anodic protection (prize quiz) - HCBBS Forum
79. Location where downloaded files are stored - HCBBS Forum
80. The Ministry of Environmental Protection releases typical cases of fraud in automatic monitoring data for key pollution sources in 2015, the second batch - HCBBS Forum
81. The water output from the filter press is extremely low - HCBBS Forum
82. 【Daily Question】December 20, 2015 – Boiler Basics True/False Questions (3 wealth points for replying; +3 to 8 additional wealth points for correct answers) - HCBBS Forum
83. 【Daily Question】12.27 Multiple-choice Question: The commonly used medium for pipeline blasting and purging is ( - HCBBS Forum
84. The problem with the fuel gas - HCBBS Forum
85. Hydrogen production by water electrolysis - HCBBS Forum
86. Catalytic start-up burner fuel - HCBBS Forum
87. After driving, the alkalinity is low while the salt content is high - HCBBS Forum
88. Leak detection in vacuum systems - HCBBS Forum
89. Two processes of Huisheng Engineering have passed technical evaluation - HCBBS Forum
90. Thoughts on the 2015 Certified Safety Engineer Exam - HCBBS Forum
91. Strength calculation of pressure vessels - HCBBS Forum
92. In the Hilscher DCS macros v4.6.1 version, data updates are slow when switching pages - HCBBS Forum
93. What are the PAM pilot-scale testing methods and evaluation methods? - HCBBS Forum
94. Could an expert please explain the meaning of this passage? Thank you. - HCBBS Forum
95. Material selection - HCBBS Forum
96. Foss Digital Positioner Chinese Operation Manual - HCBBS Forum
97. I would like to ask if there is any issue with the square root function in differential pressure transmitters - HCBBS Forum
98. Sinopec and CNPC have partnered with Russian energy giants Sibur and Gazprom respectively - HCBBS Forum
99. How is deoxygenated water produced? Are there any deoxygenation machines? What is the principle behind it? Thank you! - HCBBS Forum
100. Is there a Haiyou from the Emerging International Group? - HCBBS Forum