English — Forum #723 (Page 281/642)

1. The post display on the Haichuan mobile terminal is blank; the network connection is abnormal, and it’s not possible to reply to posts - HCBBS Forum
2. Large-scale unit commissioning confirmation form - HCBBS Forum
3. Butane removal tower feed control - HCBBS Forum
4. 【Daily Question】Chemical Engineering Principles 369: Acidic Corrosion by Carbon Dioxide (May 5) - HCBBS Forum
5. Can only pumps designed in accordance with API610 be equipped with an API682 flushing scheme? - HCBBS Forum
6. Butterfly valve - HCBBS Forum
7. Is it not possible to return to cultivation this way? - HCBBS Forum
8. GB31570－2015 sets requirements for Ni and its compounds in catalytic flue gases - HCBBS Forum
9. Hex head stainless steel bolt CL2 - HCBBS Forum
10. This pipe vibrates very heavily; I hope someone experienced can give me some advice - HCBBS Forum
11. How is the optimal flow rate for compressed air determined? Under what length of pipe section should frictional loss be considered? - HCBBS Forum
12. Vibration conditions of AY type centrifugal pumps - HCBBS Forum
13. Seeking partnerships for high-end phosphorus chemical projects - HCBBS Forum
14. Ammonia absorption in an acid scrubber tower to produce ammonium sulfate - HCBBS Forum
15. 【Daily Topic】【Civil Engineering Version 20160504】 - HCBBS Forum
16. 【Daily Question】 2016 04 26 Hydrogenation Sector Multiple-choice Question - HCBBS Forum
17. PSA hydrogen production: significant changes in raw gas composition - HCBBS Forum
18. ​ Can a host computer software be connected to two PLCs at the same time? - HCBBS Forum
19. Water supply to the reactor and heat exchanger during suppression - HCBBS Forum
20. Operating Instructions for Sliding Vane Pumps - HCBBS Forum
21. Safety Technology Exchange Edition: Daily Question (2016.5.5) - HCBBS Forum
22. How much air is required in a pharmaceutical factory? - HCBBS Forum
23. What signal is used for compressor vibration detection? - HCBBS Forum
24. 【Daily Question】Chemical Engineering Principles 367: Boiler Feed Water (May 3) - HCBBS Forum
25. Which type of tray is good for benzene removal towers? - HCBBS Forum
26. Memory techniques for each heat exchanger in the atmospheric and vacuum distillation unit - HCBBS Forum
27. I plan to take the exam on fundamental dynamics in 2016; I would like to ask for recommendations on books - HCBBS Forum
28. Why won’t HaiChuan let me download things? - HCBBS Forum
29. Pressure testing of socket-welded valves - HCBBS Forum
30. How to recover and reuse transformed condensate - HCBBS Forum
31. One sentence a day - HCBBS Forum
32. Does the security section of a power plant need to have diesel generators? What else needs to be hung there besides the items related to the steam engine? - HCBBS Forum
33. Output current of a single aluminum anode - HCBBS Forum
34. Hollyland DC fault S main control card - HCBBS Forum
35. Sign-in record post dated April 30, 2016 - HCBBS Forum
36. Seek solutions for hydrogenation towers - HCBBS Forum
37. Why is the lag in level control so large, and why is cascade control of level and flow required? - HCBBS Forum
38. 【Daily Question】Deep Processing 20160504 Multiple Choice: An intermittent reactor is ( ) - HCBBS Forum
39. Chloromethane storage tank - HCBBS Forum
40. I would like to ask everyone about the issues related to chemical industry piping connections for boilers - HCBBS Forum
41. Sulfur Daily Question, May 4th------3 points for participation, 10 points for a correct answer - HCBBS Forum
42. I often argue with my husband - HCBBS Forum
43. Question consultation - HCBBS Forum
44. The wind-facing area of the plate-fin cooler, and the issue of wind velocity! - HCBBS Forum
45. 【Daily Question】Advanced Processing 20160503 Multiple Choice Question: Gas-solid phase catalytic reactors are divided into fixed-bed reactors, ( )... - HCBBS Forum
46. Sulfur Daily Question, April 29------5 rewards for participation, 10 rewards for correct answers - HCBBS Forum
47. ion membrane - HCBBS Forum
48. Do you have any information on the downstream products of carbon hexa, specifically n-hexane? - HCBBS Forum
49. Dear experts, what are the uses of injectors in the chemical industry?/ - HCBBS Forum
50. I’m not very clear about the structure of control valves; is there anyone who can explain it in detail? - HCBBS Forum
51. Methanol, benzene alkylation unit - HCBBS Forum
52. Regarding heat treatment using electric heating strips - HCBBS Forum
53. I’m a senior student; is there any information available on double-pass heat exchange? - HCBBS Forum
54. Differential pressure transmitter calibration - HCBBS Forum
55. Pipeline pressure testing issues - HCBBS Forum
56. 【Daily Question No. 169】May 05, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
57. Can flanges of different weight classes be connected to each other - HCBBS Forum
58. Production technologies for furfural, furfolic acid, and **furan - HCBBS Forum
59. Searching for information on cross-flow (X-type) heat exchangers - HCBBS Forum
60. News on the Xinfeng coal-to-natural gas coal chemical project in Wu’an, Hebei - HCBBS Forum
61. The solution contains zirconium; what can be used to mask it? ? - HCBBS Forum
62. Sign-in record post from April 24, 2016 - HCBBS Forum
63. Selection of vacuum pumps - HCBBS Forum
64. Seeking help from fellow users regarding the bolts of the equipment supports - HCBBS Forum
65. 【Daily Question No. 131】April 28, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
66. Design of vaporization equipment for 1T methanol - HCBBS Forum
67. Tank truck oil unloading plan - HCBBS Forum
68. Will the hot air from the slag cooler, used as secondary air, cause the flue gas temperature to rise? - HCBBS Forum
69. Slow - HCBBS Forum
70. At what level does the general corrosion rate reach, requiring the use of corrosion inhibition measures? - HCBBS Forum
71. To my integrity, which will one day pass away - HCBBS Forum
72. Dear teachers, the pitch of the tube banks, the transverse pitch, and the longitudinal pitch of the boiler economizer tubes - HCBBS Forum
73. I would like to ask how to handle burying a hydrogen pipeline at a depth of 40 meters - HCBBS Forum
74. Is formalin solution classified as moderately hazardous or highly hazardous? - HCBBS Forum
75. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 506 - HCBBS Forum
76. What are the differences in the stress on the foundation bolts of towers and spherical tanks? - HCBBS Forum
77. Brothers, I have a question for everyone: how much gas can pass through a DN200 pipeline? - HCBBS Forum
78. Should neutralizing cleaning be considered for the pipes and equipment in the hydrofinishing unit? - HCBBS Forum
79. Solving the problems encountered in the ball-passing test for furnace tubes with internal fins. Ah, experts! - HCBBS Forum
80. Location of the cooler after the air cooler, and the return tank - HCBBS Forum
81. 【Daily Topic】【Civil Engineering Version 20160423】 - HCBBS Forum
82. 【Daily Question】Chemical Engineering Principles 364: Analysis (April 27) - HCBBS Forum
83. Centrifugal pump - HCBBS Forum
84. Cost-performance of instruments - HCBBS Forum
85. Temperature regulation oscillation - HCBBS Forum
86. Sign-in record post from April 26, 2016 - HCBBS Forum
87. Technical assistance: How to create an inspection plan for embedding ground pipes in earth-based scaffolding during construction? - HCBBS Forum
88. How is the terminal pressure of a steam heat exchanger determined? - HCBBS Forum
89. Is it necessary to use an opening reinforcement ring for pressure vessel equipment? - HCBBS Forum
90. Sign-in record post from May 2, 2016 - HCBBS Forum
91. Seeking advice on instant zeroing of the Bituba flow meter - HCBBS Forum
92. Dimethyl sulfoxide - HCBBS Forum
93. Chemical Engineering Engineer Exam - HCBBS Forum
94. What materials are people using for the backflush tubes in ammonium sulfate saturators these days? - HCBBS Forum
95. May I ask how to calculate the amount of cleaning agent needed to remove scale? - HCBBS Forum
96. On harmonics and harmonic mitigation - HCBBS Forum
97. Latest safety responsibility system - HCBBS Forum
98. Regarding the impact of large pressure differences on valves and how to choose them - HCBBS Forum
99. 【Daily Topic】【Engineering Version 20160430】 - HCBBS Forum
100. Please provide an example using the PCS7 software, with a 300PLC control system - HCBBS Forum