English — Forum #723 (Page 338/642)

1. Lost lamb - HCBBS Forum
2. Thoughts on Reading Comprehension in the English College Entrance Exam - HCBBS Forum
3. Burning biogas provides \"gaseous fertilizer\" for vegetable greenhouses” - HCBBS Forum
4. Low-temperature methanol washing - HCBBS Forum
5. Could anyone suggest methods for manually determining the composition of gas components? Thank you - HCBBS Forum
6. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 462 - HCBBS Forum
7. The pressure in the dechlorination tower fluctuates significantly, with these fluctuations lasting for a long period throughout the day; what could be the reason? - HCBBS Forum
8. The effect of acetylene - HCBBS Forum
9. Steam calculation - HCBBS Forum
10. Chromium-containing wastewater contains small amounts of copper; how should nickel wastewater be treated to ensure that the levels of copper, nickel, and chromium are within acceptable limits? - HCBBS Forum
11. Long-distance transportation of powder pipelines - HCBBS Forum
12. What is FDM? - HCBBS Forum
13. Questions about the upright installation method for large storage tanks - HCBBS Forum
14. 【Weekly Topic】【Storage & Transportation Edition 20160314】 - HCBBS Forum
15. 【Weekly Topic】【Engineering Version 20160308】 - HCBBS Forum
16. Discussion on the desulfurization of organic amines - HCBBS Forum
17. Basic requirements for the design of biogas transmission pipelines - HCBBS Forum
18. Who has seen a CS control valve positioner? - HCBBS Forum
19. 【Daily Question No. 98】March 08, 2016: +2 wealth for participation, +3 additional wealth for a correct answer - HCBBS Forum
20. Maximum distance of the branch air supply pipe from the air source distributor to the valve - HCBBS Forum
21. Gagagagagagaga - HCBBS Forum
22. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 266 - HCBBS Forum
23. Case Analysis (10): How do you make the decision? - HCBBS Forum
24. One question per day on occupational health – March 15: Participate for a prize; 5 correct answers and you’ll get another prize - HCBBS Forum
25. 【Joint Study*】【Civil Engineering Version 20160313】 - HCBBS Forum
26. What are the design parameters for a 100 cubic meter biogas project? - HCBBS Forum
27. Selection of liquid argon loading pumps - HCBBS Forum
28. 【Daily Question No. 102】March 14, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
29. Long-term operation of the fractionation system - HCBBS Forum
30. I would like to ask everyone: in atmospheric and vacuum distillation units, there are a large number of heat exchangers. But the degrees of corrosion vary - HCBBS Forum
31. What is the temperature control for the liquid sulfur outlet devices at everyone’s site? - HCBBS Forum
32. How does everyone calculate the overall heat transfer coefficient when designing heat exchangers? - HCBBS Forum
33. The application of ORP in wastewater treatment - HCBBS Forum
34. Discussion on the proposed and under-construction ethylene oxide and ethylene glycol projects - HCBBS Forum
35. One Question per Day on Synthetic Ammonia (Series 41) - HCBBS Forum
36. How to manage walkie-talkies in chemical plant workshops? - HCBBS Forum
37. Online analytical instruments - HCBBS Forum
38. What are the disadvantages of leaks in the spray pipes of a circulating cooling water system? - HCBBS Forum
39. 6- Discussion on methods for demisting dust and tar-containing high-temperature coke oven gas, pyrolysis gas, and upgraded low-rank coal gas filters - HCBBS Forum
40. Does a ground torch require an additional liquid tank? Are there any relevant standard regulations? - HCBBS Forum
41. There’s a question that has been bothering me for a long time - HCBBS Forum
42. How are the various stresses calculated by Caesar combined to form normalized stresses? - HCBBS Forum
43. 【Chemical Market】Current trends in liquefied petroleum gas - HCBBS Forum
44. Those extremely useful kitchen items for kitchen renovation – how many do you have? - HCBBS Forum
45. Can storage tanks made of aluminum alloy be used to hold methanol, glacial acetic acid, and methyl acetate? - HCBBS Forum
46. Where is the sampling point for the online methanol synthesis analyzer? - HCBBS Forum
47. Can valve types be added in Aspen? - HCBBS Forum
48. Tubular heat exchanger - HCBBS Forum
49. Is Aspen Plus capable of meeting the design requirement of a minimum heat transfer temperature difference of 5°C for counterflow heat exchangers? - HCBBS Forum
50. What responsibility does an employer have if an employee gets injured after work hours? - HCBBS Forum
51. Environmental Protection Daily Post 2.29: Reward for participation, plus 5 more points for answering 5 questions correctly - HCBBS Forum
52. Atmospheric pollution control should be understood in a scientific, objective, and rational manner - HCBBS Forum
53. What impact will the addition of scale inhibitors to catalytic cracking slurry have on the properties of the slurry? - HCBBS Forum
54. Questions regarding the use of safety belts for workers weighing over 100 kg when working at heights - HCBBS Forum
55. Has Zhuhua really disappeared? - HCBBS Forum
56. How to obtain ionization equilibrium constants using Aspen? - HCBBS Forum
57. PA8110A weighing - HCBBS Forum
58. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 448 - HCBBS Forum
59. 【Weekly Topic】On the topic of spare parts substitution - HCBBS Forum
60. Pressure differential issues in the reactors of diesel and gasoline hydrogenation units - HCBBS Forum
61. Who are the users of imported centrifugal compressors? - HCBBS Forum
62. Raw materials for sec-butyl acetate and the composition of the liquefied gas after the reaction - HCBBS Forum
63. Who has the GB50183-2015 Code for Fire Protection Design of Oil and Gas Engineering Projects? Thank you! - HCBBS Forum
64. 【Weekly Topic】On the topic of restoring and reusing old items - HCBBS Forum
65. Safety management exam materials, carefully compiled, 42 exam tips - HCBBS Forum
66. March 4, 2016: There is a high likelihood of severe volatility in the market today! - HCBBS Forum
67. Regarding U-shaped heat exchange tubes - HCBBS Forum
68. Specifications for degreasing low-temperature equipment - HCBBS Forum
69. Instrument operation - HCBBS Forum
70. During the audit, it was found that the actual process parameters on site did not match those specified in the work instructions. How should follow-up audits be conducted? - HCBBS Forum
71. Application submitted by technical staff from the production area - HCBBS Forum
72. What is the quality of Japanese NDV valves? - HCBBS Forum
73. Discussion on the Corrosion in the Debutanization Tower System of Hydrogenation Units - HCBBS Forum
74. Liquid level measurement in wax medium equipment - HCBBS Forum
75. 【Basic Knowledge Activity】In the petrochemical industry, what are the indicators that reflect the evaporation properties of gasoline as part of the ‘basic knowledge’? - HCBBS Forum
76. 44 Common Violations by Engineering Contractors │ Must-Check Items Before Resuming Work - HCBBS Forum
77. Safe distance between pump house and storage tanks - HCBBS Forum
78. Purification of nickel and cobalt in ferrous chloride and ferrous sulfate solutions - HCBBS Forum
79. Polyurethane sweepers are used in belt conveyors - HCBBS Forum
80. 13 years working at CNPC - HCBBS Forum
81. Issues with blending crude oil at reduced pressure and vacuum levels - HCBBS Forum
82. The control valve for the discharge of the high-pressure washer will not close properly - HCBBS Forum
83. Reasons for removing the check valve from the screw pump - HCBBS Forum
84. The future of instrumentation engineers - HCBBS Forum
85. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 446 - HCBBS Forum
86. It seems like the market conditions are getting worse and worse. - HCBBS Forum
87. 【Daily Question】March 2, 2016: +2 Wealth for participation； +3 to 8 wealth for correct answers - HCBBS Forum
88. In what situations cannot welded steel pipes be used? - HCBBS Forum
89. Issues regarding the installation of thermometers and pressure gauges in the acidic water tank and the amine-depleted liquid tank - HCBBS Forum
90. What other processes are available for the dehydration of ethylene glycol besides distillation? - HCBBS Forum
91. Seize the new opportunities brought by supply-side reform to safe production - HCBBS Forum
92. 【Daily Question】Chemical Engineering Principles 327: Mechanically Stirred Clarifier (February 25) - HCBBS Forum
93. Selection of safety valves - HCBBS Forum
94. Calculation of flange neck thickness for non-standard containers - HCBBS Forum
95. Formula for calculating the diameter of pipes - HCBBS Forum
96. The year is coming to an end – what are everyone busy with? - HCBBS Forum
97. 【Advanced Processing of C4】Discussions on the advanced processing of C4 - HCBBS Forum
98. Chimney height design? - HCBBS Forum
99. Problems with Emerson Coriolis mass flowmeters - HCBBS Forum
100. The fourth installment of the original chemical industry riddles – winners will receive flowers - HCBBS Forum