English — Forum #723 (Page 427/642)

1. Top 10 Trends in the Future Development of the Compressor Industry - HCBBS Forum
2. Before the transformation, was the blockage in the heat exchanger mainly due to clogging or ammonium salt crystallization? - HCBBS Forum
3. Ethane to ethylene - HCBBS Forum
4. 【Daily Question】12.10 Fill-in-the-blank: The fins added outside the tubes of the air cooler are mainly intended to improve (), thereby increasing... - HCBBS Forum
5. I would like to ask about the method for separating toluene from n-hexane - HCBBS Forum
6. How to improve powder bulk density - HCBBS Forum
7. 【Weekly Topic】: Should the equipment used in the slurry preparation and transportation processes for water-coal slurry gasification be designed to be explosion-proof? Why? - HCBBS Forum
8. 2015 First-Class Constructor Official Website Score Inquiry Summary Post - HCBBS Forum
9. Abnormal liquefied gas and exhaust gas data - HCBBS Forum
10. The impact of fiberglass reinforced plastic pipes on pumps - HCBBS Forum
11. With a low inflow load and aged sludge, does excessive sludge discharge easily lead to the proliferation of filamental bacteria? - HCBBS Forum
12. Design of closed-loop cooling circulating water - HCBBS Forum
13. 【Daily Question No. 41】December 07, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
14. What is the required particle size for impurity particles in mechanical seals? - HCBBS Forum
15. Skills in communicating with people - HCBBS Forum
16. Carbon residue content in space furnaces? - HCBBS Forum
17. Environmental Protection Daily Quiz 12.8: Participate for prizes; 3 correct answers earn an additional 3 prizes - HCBBS Forum
18. How should equipment be inspected upon arrival, and who is responsible for that inspection? Who can afford this responsibility? - HCBBS Forum
19. Major events in the phenol market in 2015 - HCBBS Forum
20. extractor - HCBBS Forum
21. Modification of the unloader in reciprocating compressors - HCBBS Forum
22. Imported equipment in coal chemical industry - HCBBS Forum
23. Discuss the latest classification list of occupational disease hazards - HCBBS Forum
24. The effluent from the secondary sedimentation tank in the A/O process is turbid - HCBBS Forum
25. Time for sequential shutdown after carbon dioxide level exceeds the limit after passing through the molecular sieve - HCBBS Forum
26. Seeking treatment methods for chilblains - HCBBS Forum
27. Can copper heat exchangers use ethylene glycol as a cooling medium? - HCBBS Forum
28. Why is the TN effluent volume relatively small? - HCBBS Forum
29. What causes the existence of two liquid levels in the glass plate level at the bottom of the hydrorefined diesel distillation column? - HCBBS Forum
30. 【Daily Question】12.12: Identify the option that does not belong to the forms of material failure (2 wealth points for a reply + additional 3–8 wealth points if the answer is correct) - HCBBS Forum
31. 【Daily Question No. 72】December 09, 2015: +2 wealth for participation, +3 to +8 wealth for correct answers - HCBBS Forum
32. What kind of chemicals are suitable for air flotation treatment of soybean protein wastewater? - HCBBS Forum
33. Is it necessary to add an acid mist collector at the outlet of the Naisch pump? - HCBBS Forum
34. Regarding the registered power foundation exam! - HCBBS Forum
35. Are the welds on pipes considered static sealing points? - HCBBS Forum
36. Requirements and registration for the registered water supply and drainage engineer exam - HCBBS Forum
37. 【Daily Question】Reissue 12.15 True or False: The larger the excess air coefficient, the higher the thermal efficiency of the heating furnace - HCBBS Forum
38. 2015 Annual Statistics Post on Outstanding Members of the Technical Team - HCBBS Forum
39. I hope some expert can give me some advice - HCBBS Forum
40. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 384 - HCBBS Forum
41. Seeking advice on the operation plan for water-coal slurry additives - HCBBS Forum
42. The full-scale water-interlocked trial run of Unit 1# desulfurization tower at Shenhua Coal-to-Oil Xinjiang Company was successful on the first attempt - HCBBS Forum
43. NDRC: Three types of enterprises must undergo mandatory clean production audits - HCBBS Forum
44. What the heck is a safety indicator? - HCBBS Forum
45. Confusion about being safe - HCBBS Forum
46. Seeking expert help to resolve the issue with the slag discharge machine at the tail end of the rotary kiln - HCBBS Forum
47. Regarding the general layout plan - HCBBS Forum
48. Increase in powder packing density - HCBBS Forum
49. If you catch a mouse, what should you do with it? - HCBBS Forum
50. Why is the pressure difference of the EDV nozzle so high? - HCBBS Forum
51. What to do if the octagonal gasket doesn’t seal properly? - HCBBS Forum
52. How to light a sulfur production furnace - HCBBS Forum
53. 【Daily Question】12.8 For water coolers, using the cooling water inlet for control has more disadvantages than advantages - HCBBS Forum
54. Total sulfur content - HCBBS Forum
55. Level measurement issues in aviation fuel hydrogenation units - HCBBS Forum
56. High-viscosity flowmeter - HCBBS Forum
57. Aviation fuel flash point - HCBBS Forum
58. Comparison of heat exchanger leak testing methods - HCBBS Forum
59. Why is nitrogen used instead of air for the airtightness test of low-pressure systems? ? ? - HCBBS Forum
60. Selection of the root valve for liquid ammonia safety valves - HCBBS Forum
61. Acidic gas in the middle of the Klaus bed - HCBBS Forum
62. Seeking help with GB/T 29910 series standards - HCBBS Forum
63. Is it effective to add a base to a solution consisting of 70% methanol and 20% methyl acetate in order to remove methyl acetate? - HCBBS Forum
64. Issues regarding the use of differential pressure transmitters for measuring density - HCBBS Forum
65. Calculation of the amount of heat transfer oil required - HCBBS Forum
66. 【Daily Question】Dec 9, 2015: Fluid flow direction in heat exchangers (Top 50 participants + 2 rewards) - HCBBS Forum
67. Lock it and tag it – that’s all there is to it! - HCBBS Forum
68. Use of make-up cooling fans in catalytic combustion of exhaust gases - HCBBS Forum
69. Do lined pipes need to be inspected for defects? - HCBBS Forum
70. Positive displacement pumps and vortex pumps must be equipped with a bypass valve between the inlet and outlet valves of the pump - HCBBS Forum
71. Measurement problems of orifice plate flowmeters - HCBBS Forum
72. Why do all registered environmental impact assessment engineers have to change their social security coverage to that of private enterprises? - HCBBS Forum
73. Asia has the largest single-unit production capacity - HCBBS Forum
74. Corrosion issues in pipelines during operation - HCBBS Forum
75. Club World Cup – Bao Li’s last-minute goal! Evergrande defeats América 2-1 to face Barcelona - HCBBS Forum
76. Agreement reached at the Paris Climate Conference: What are the key points? - HCBBS Forum
77. 【Daily Question】Principles of Chemical Engineering 262: α (December 13) - HCBBS Forum
78. I would like to ask whether inoculation is required when testing BOD5 in anaerobic effluent - HCBBS Forum
79. Which desulfurization technology is the best? - HCBBS Forum
80. Fine slag moisture content - HCBBS Forum
81. On the deformation issue of the circumferential welds of stainless steel tube sheets - HCBBS Forum
82. Relationship between impact energy and minimum lateral expansion value in the Charpy impact test - HCBBS Forum
83. The truth behind Fog Mai - HCBBS Forum
84. Alkylation wash tower - HCBBS Forum
85. 【Active Participation for Joint Improvement 12.11-12.17】Participation: +2 to Wealth, +3~10 to Correct Wealth - HCBBS Forum
86. Environmental protection in the coal chemical industry should focus on VOCs control - HCBBS Forum
87. Does the nitrogen in syngas need to be removed in the coal-to-methanol process? - HCBBS Forum
88. 【Petrochemical Section】Best SimSun Font Selection - HCBBS Forum
89. What specific dimensions should be indicated on a piping diagram (pipe layout plan)? - HCBBS Forum
90. Between construction and operation, which one allows one to acquire more knowledge and skills? - HCBBS Forum
91. Reference table for the selection of corrosion-resistant materials for the parts of the transmitter that come into contact with media - HCBBS Forum
92. The three-phase mixed oil that has been washed contains suspended water droplets. - HCBBS Forum
93. 【Daily Question】Question from Issue 20151216 - HCBBS Forum
94. I highly praise the forum for restoring the original better way of opening posts using search keywords - HCBBS Forum
95. 【Daily Question】Question from Issue 20151214 - HCBBS Forum
96. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 236 - HCBBS Forum
97. Hengli Petrochemical’s integrated refining and chemical production project has commenced construction on Dalian Changxing Island, with an investment of 74 billion planned - HCBBS Forum
98. 【Daily Question】December 10, 2015: Weld offset distance (2 wealth points for a reply + 3–8 additional wealth points for a correct answer) - HCBBS Forum
99. Sinopec’s internationally first IHCC process has passed the appraisal: - HCBBS Forum
100. Regarding the feed issue of the extraction distillation tower - HCBBS Forum