English — Forum #723 (Page 442/642)

1. What are the advantages and disadvantages of performing phosphating treatment inside the inlet and outlet buffer tanks of reciprocating machines? - HCBBS Forum
2. Why can’t you complain to your subordinates - HCBBS Forum
3. High-purity isopentane fills a gap in the domestic market and enters the Middle East market - HCBBS Forum
4. How to implement the process parameter assessment system? ? - HCBBS Forum
5. Do any experts have an electronic version of the models for explosion-proof fans? ! ! ! - HCBBS Forum
6. Discuss the relationship between management and technology - HCBBS Forum
7. Differences between biodiesel and conventional diesel - HCBBS Forum
8. Everyone, work on question 71-2: the multiple-choice question 57 from the \"Project Management\" section of the 2015 First-Class Constructor exam; there will be a reward for those who answer it correctly - HCBBS Forum
9. Is it good or bad for CNPC to sell its pipeline refining business? - HCBBS Forum
10. Questions about DCS - HCBBS Forum
11. Questions regarding pump selection - HCBBS Forum
12. With the arrival of the Minor Snow solar term, which delicacies emerge? ? ? - HCBBS Forum
13. How to remove the fading color of circulating flow stocks in PRO/II? - HCBBS Forum
14. 【New Energy Development】Successful independent development of large-area perovskite solar cells - HCBBS Forum
15. Can safety assessors and registered safety engineers be combined? (Monthly topic) - HCBBS Forum
16. Summary of Supervision Work for Public Utilities in Large-Scale Projects - HCBBS Forum
17. Paper author - HCBBS Forum
18. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 365 - HCBBS Forum
19. What is the reason why the helical gear does not rotate? - HCBBS Forum
20. Market conditions for nucleating agents - HCBBS Forum
21. 【Daily Question】Question from Issue 20151117 - HCBBS Forum
22. 【Daily Question】Question from the 20151124 issue - HCBBS Forum
23. Can hydrogen pipelines be purged with steam? Why? - HCBBS Forum
24. Stalemate in the restructuring of Datang Coal Chemicals; is the launch of Fuxin’s coal-to-gas project still a long way off? - HCBBS Forum
25. When using the three-table alignment method to align a machine unit, should one start by adjusting the horizontal direction or the vertical direction first? - HCBBS Forum
26. How to calculate the circulation volume of a booster pump - HCBBS Forum
27. Which domestic manufacturers produce bolts of SA 453 Gr660 Cl.A? - HCBBS Forum
28. Some translations according to English norms (FLOW METER) - HCBBS Forum
29. 【Daily Question】Question from Issue 20151119 - HCBBS Forum
30. Auto-regulating valve for gaseous ammonia - HCBBS Forum
31. For bearing manufacturing, should we look to Germany, Japan, or China? - HCBBS Forum
32. 【Daily Question】Question from the 20151119 issue - HCBBS Forum
33. \"Ten Musts\" for Safety Supervision of Enterprises with Major Hazard Sources” - HCBBS Forum
34. Briefly describe the material balance of a distillation column? - HCBBS Forum
35. Are check valves really reliable? - HCBBS Forum
36. Anticorrosion treatment with 【dilute sulfuric acid at 280~300 degrees】 - HCBBS Forum
37. 【Daily Question】Question from the 20151119 issue - HCBBS Forum
38. About Rosemount conductivity - HCBBS Forum
39. Why is the heavier end of the float, the one with magnetism, installed facing upward? - HCBBS Forum
40. What is the role of the boiler in the distillation process? - HCBBS Forum
41. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151124 issue - HCBBS Forum
42. Briefly describe the heat balance of a distillation tower? - HCBBS Forum
43. Mercury poisoning | A hidden occupational killer - HCBBS Forum
44. Help needed - HCBBS Forum
45. What is the classification of chemical explosions? - HCBBS Forum
46. Are there diesel hydrofining reactors that use fuel oil as fuel? - HCBBS Forum
47. Technology for producing high-quality needle coke from low-quality oil slurry has been developed - HCBBS Forum
48. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-11-24) — Points are awarded for participation - HCBBS Forum
49. The insulation board is sunken – how can it be fixed? - HCBBS Forum
50. 【Daily Question】Chemical Engineering Principles: Absorption Operation Line (November 19) - HCBBS Forum
51. 【Popular Science Tips on Polymers and Materials】--33 The polymer materials hidden in \"contact lenses\" + People watching the sea - HCBBS Forum
52. E+H instrument selection samples or selection software - HCBBS Forum
53. Regarding loop operations in Hysys - HCBBS Forum
54. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 370 - HCBBS Forum
55. Unconventional oil resources and development prospects - HCBBS Forum
56. Problem of nitrosyl sulfate formation from NO+NO2+nicotinic acid! - HCBBS Forum
57. New Energy — Dimethyl Ether Technology - HCBBS Forum
58. The lowest temperature that the pressure relief device can reach - HCBBS Forum
59. How to choose between single-pole double-throw and double-pole double-throw for pressure switches? - HCBBS Forum
60. Our country becomes the third to achieve industrialized production of shale gas** - HCBBS Forum
61. Comparison between coal chemical industry and petroleum chemical industry - HCBBS Forum
62. The Ministry of Environmental Protection plans to deepen the pilot program for environmental pollution liability insurance; a draft has been prepared - HCBBS Forum
63. What are the equipment and facilities for mechanical safety? - HCBBS Forum
64. Stalemate in the restructuring of Datang Coal Chemicals – Is the launch of Fuxin’s coal-to-gas project still a long way off? - HCBBS Forum
65. Applications of polyurethane elastomers - HCBBS Forum
66. Ethanol - HCBBS Forum
67. Schneider Electric selection guide or selection software - HCBBS Forum
68. How to mention equipment conditions - HCBBS Forum
69. How to control it in the early stage of operation of the atmospheric and vacuum heat exchange network - HCBBS Forum
70. Evergrande took the lead with a goal in the 53rd minute; even Ma Dashi jumped up in excitement - HCBBS Forum
71. 【Daily Question】Question from the 20151123 issue - HCBBS Forum
72. What is polyacrylamide coagulant? - HCBBS Forum
73. Regarding signal issues - HCBBS Forum
74. Air separation load adjustment - HCBBS Forum
75. Relationship between inlet temperature of the compressor in the ammonia synthesis process and compressor power consumption - HCBBS Forum
76. SHSG033 Regulations for Basic Petrochemical Design - HCBBS Forum
77. Vacuum residue and slurry oil - HCBBS Forum
78. How much do you need to know about the proper use of cranes? - HCBBS Forum
79. The diameter-changing section of a tower-type container is conical. Which end of this cone, the larger one or the smaller one, experiences greater stress? - HCBBS Forum
80. 【Daily Question】Question from Issue 20151118 - HCBBS Forum
81. Sign-in record post from November 17, 2015 - HCBBS Forum
82. Terms that are easily confused in paper writing on the refining industry - HCBBS Forum
83. 3-wire combustible gas alarm connected to AI card; total card burnout – solution required - HCBBS Forum
84. Propylene oxide and dimethoxymethane have similar boiling points; how can they be separated? - HCBBS Forum
85. 【Alkylation】Dry point of alkylated oil - HCBBS Forum
86. Treatment of saturated waste brine (sodium sulfate to sodium chloride ratio 1； around 1) - HCBBS Forum
87. 【Daily Question】Question from 20151118 - HCBBS Forum
88. World’s top watch rankings! So informative! - HCBBS Forum
89. What will be the consequences of using a DN65 pipe for shale gas with a flow rate of 125,000 Nm3/h and a pressure of 10 MPa? - HCBBS Forum
90. 20151123 One question per day - HCBBS Forum
91. How to solve the clogging problem of screw conveyors - HCBBS Forum
92. What are the daily operation management and maintenance tasks for water treatment systems? - HCBBS Forum
93. Future development trends of the natural gas market - HCBBS Forum
94. Is it allowed to install a stop valve in front of the safety valve? - HCBBS Forum
95. The question is whether the sulfur analysis in Coulomb refers to total sulfur or organic sulfur - HCBBS Forum
96. New coal gasification technology introduced in Shandong - HCBBS Forum
97. MTO regeneration gas system - HCBBS Forum
98. The discharge rate of the emergency relief valve is affected by those factors - HCBBS Forum
99. Installation of glass-lined pipe instrumentation and valves - HCBBS Forum
100. Occupational health – Noise calculation - HCBBS Forum