English — Forum #723 (Page 412/642)

1. Problems of hydrogen heating in selective hydrogenation of gasoline - HCBBS Forum
2. Jiangxi Jiuye Metal Smelting - HCBBS Forum
3. Weekly topic: It’s Christmas today; answering questions earns large rewards； Question 245 - HCBBS Forum
4. I have a question regarding oxygen production using air separation - HCBBS Forum
5. Civil Engineering Structure Discussion Area ----【Daily Question】Question from the 20151219 issue - HCBBS Forum
6. I would like to ask everyone: how is anti-corrosion treatment carried out inside pipeline welds? - HCBBS Forum
7. Issues regarding the acid aqueous stripping of non-phenicolic compounds - HCBBS Forum
8. Does adding trisodium phosphate to the boiler water increase or decrease the pH? - HCBBS Forum
9. Blending of sulfur slag in the production of acid from pyrite - HCBBS Forum
10. Welding issues in high-temperature centrifugal pumps - HCBBS Forum
11. The operating temperature is higher than the design temperature - HCBBS Forum
12. Why are slurry pumps with a large net positive suction head used for liquefied petroleum gas unloading? - HCBBS Forum
13. 【Daily Question】2015.12.18 Heat patterns in manual welding (2 wealth points for a reply; +3–8 additional wealth points if the answer is correct) - HCBBS Forum
14. What is a clean air conditioning system? - HCBBS Forum
15. Typical accident cases of heating furnaces - HCBBS Forum
16. Cost of reformation unit - HCBBS Forum
17. On the selection of the mesh size for pipeline flame arrestor filters - HCBBS Forum
18. 10 Tips for Safe Management of Confined Spaces - HCBBS Forum
19. The sedimentation effect of printing and dyeing wastewater is poor - HCBBS Forum
20. Construction inspection standards for oxygen pipelines - HCBBS Forum
21. Problems with PID parameter tuning on DCS. - HCBBS Forum
22. How to calculate the actual flow rate of a pipeline pump - HCBBS Forum
23. 【Joint Study*】【HVAC Version 20151228】 - HCBBS Forum
24. For a mechanically sealed thermosiphon tank, what kind of oil should be used and what is the grade of that oil? - HCBBS Forum
25. Seek help with \"Chlor-alkali Technology\" - HCBBS Forum
26. Is there any difference between the start-up nozzle (the middle one) of the vacuum pump used for evacuating the turbine and the nozzles of stage 1 and stage 2? - HCBBS Forum
27. How to simulate the stress on adjacent pipe racks when the clearance between them is extremely small? - HCBBS Forum
28. Resending 【One Question per Day】12.22 Fill-in-the-blank question: The three equilibria that need to be understood in the distillation process are - HCBBS Forum
29. Analysis of common faults in the use of AST pressure sensors - HCBBS Forum
30. International oil prices have plummeted; the company says it is at a critical stage for its survival, and in order to prepare for the future, instrument technicians are being sought for part-time work. - HCBBS Forum
31. The product needs to be welded in accordance with ASME IX requirements - HCBBS Forum
32. Winter sewage treatment + low biological activity + steam heating - HCBBS Forum
33. Is the 10mm specified by ASME for reinforcement-free use the nominal thickness or the calculated thickness? - HCBBS Forum
34. No one knows how many more times there will be a next time - HCBBS Forum
35. Top 100 Chinese Fertilizer Companies in 2014: - HCBBS Forum
36. Reissue of 【One Question per Day】12.15 Short Answer Question: What is the purpose of stripping? - HCBBS Forum
37. AB Rockwell DCS MACS V6.5.2 Chemical Industry Edition software - HCBBS Forum
38. What causes smoke trailing? - HCBBS Forum
39. What impact do cavitation and air entrapment in the condensate pump, as well as clogging of the inlet filter, have on the motor current? What is the trend of these changes? - HCBBS Forum
40. Calculation of flow rate in MVR steam recompression systems - HCBBS Forum
41. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 241 - HCBBS Forum
42. 【Daily Question】Wastewater Knowledge - 12.24 (2 points for answering, 5 points for a correct answer) - HCBBS Forum
43. How to clean internal floating roof storage tanks? - HCBBS Forum
44. The 80-billion-dollar market fails to materialize; environmental third-party governance progresses at a snail’s pace - HCBBS Forum
45. Are the valves from German ARI and German oventrop suitable for urban gas systems? - HCBBS Forum
46. Urgent! Urgent! Urgent! The pipes keep scaling up – what should I do? - HCBBS Forum
47. Find out if everyone wants to change jobs - HCBBS Forum
48. Orifice plate pipe diameter - HCBBS Forum
49. Is the deodorization tank located next to the top of the acidic water tank generally made of Fe2O3, ZnO, or something else? - HCBBS Forum
50. The issue of sulfur production shutdowns - HCBBS Forum
51. Which has a better future prospect, a First-Class Constructor or a Registered Public Equipment Engineer? - HCBBS Forum
52. Have the mutual backup interlocks for your oxygen pumps been activated? How about it? - HCBBS Forum
53. Is the registration consultation section no longer on Haichuan? - HCBBS Forum
54. Oxygen pipeline flow calculation - HCBBS Forum
55. 【Daily Question】【Quality Version 20151223】 - HCBBS Forum
56. Another year has passed - HCBBS Forum
57. Sign-in record post dated December 23, 2015 - HCBBS Forum
58. Issue with the upper size limit for S30408 material in SW6 - HCBBS Forum
59. May I ask who has catalogs related to steel structures using square and rectangular tubes as the main structural elements? - HCBBS Forum
60. Ionic liquid alkylation - HCBBS Forum
61. What does it mean when the inverter is ready signal is active? - HCBBS Forum
62. Exhaust treatment device - HCBBS Forum
63. How to use Aspen EDR to design heat exchangers in PROII - HCBBS Forum
64. 【New Energy Applications】The chemical industry in the boom of new energy batteries - HCBBS Forum
65. How to choose air compressor after-treatment equipment - HCBBS Forum
66. Determination of pump head - HCBBS Forum
67. Do anyone have any good suggestions or corrective measures for on-site management? - HCBBS Forum
68. Why is desulfurization not carried out first in absorption stabilization and light hydrocarbon recovery in the petrochemical industry - HCBBS Forum
69. Looking for excellent suppliers for hydrogen production using natural gas; please share your suggestions - HCBBS Forum
70. I’m asking for help from seniors or experts who know about these devices; it’s really strange~~~ - HCBBS Forum
71. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151228 issue - HCBBS Forum
72. Sulfur sales operation card - HCBBS Forum
73. Can reformation be done with hot nitrogen and oil? - HCBBS Forum
74. Leakage problems in fixed ball valves and floating ball valves - HCBBS Forum
75. Division of labor among the three DMTO patent holders in industrial experiments - HCBBS Forum
76. 【Professional】Encyclopedia of wastewater treatment equipment, 300 questions on wastewater treatment! ! (Uniquely complete) - HCBBS Forum
77. Does the bolt load increase or decrease as the flange moves from the pre-tensioned state to the operating state? - HCBBS Forum
78. Copper scrap 2015 standard - HCBBS Forum
79. Seeking help with a question about distillation towers - HCBBS Forum
80. Does the pressure test require the use of a pointer-type pressure gauge? - HCBBS Forum
81. What are the differences between the three types of vacuum pumps, and how to choose one? - HCBBS Forum
82. How should the maximum operating pressure and factory-set range indicated on the EJA differential pressure transmitter nameplate be understood? - HCBBS Forum
83. 【Daily Question】December 22, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
84. SEI and global job options? - HCBBS Forum
85. Official interpretation of the \"Implementation Opinions on Accelerating the Promotion of Ultra-Low Emissions from Coal-Fired Boilers\" - HCBBS Forum
86. Could you recommend some good manufacturers of PVC pipe fittings? - HCBBS Forum
87. What are the measures to eliminate longitudinal or spiral scratches between the tubes and the tube sheet? Please give me some advice! - HCBBS Forum
88. Waste heat boiler firing-up - HCBBS Forum
89. 【Daily Topic】【Electrical Edition 20151221】 - HCBBS Forum
90. I’m looking for recommendations for two domestic brands of four-way solenoid valves - HCBBS Forum
91. Why is a reducer installed in a mixer, and what is the function of a reducer? - HCBBS Forum
92. Problems with Honeywell DCS system cards - HCBBS Forum
93. Pressure gauge - HCBBS Forum
94. 【Daily Question】Chemical Engineering Principles 274: Ion Exchangers (December 25) - HCBBS Forum
95. Special heat exchanger installation techniques - HCBBS Forum
96. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 398 - HCBBS Forum
97. Is 2,4-dinitrophenol butyl ester a hazardous chemical? - HCBBS Forum
98. For the impeller on a steam turbine made of material 35CrMoV, what are the consequences of an excessive P content? - HCBBS Forum
99. 【Daily Question No. 48】December 18, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
100. 【Daily Question】12.18 Term Explanation: Calorific value - HCBBS Forum