English — Forum #723 (Page 6/642)

1. Problems with heat exchangers and reboilers in delayed coking units - HCBBS Forum
2. Cleaning of the filter elements in an automatic back-blow coal tar filter? - HCBBS Forum
3. 【Daily Question】10.12 Fill-in-the-blank (10 points for a correct answer) - HCBBS Forum
4. How is the ethanol content in the exhaust gas from the ethanol venting system calculated? - HCBBS Forum
5. Determination of the head of the make-up water pump: The make-up water for the secondary water network is supplied by the primary water network - HCBBS Forum
6. I’d like to ask the experts: how should I choose a flow meter? - HCBBS Forum
7. What are the advantages and disadvantages of ultrasonic level gauges? 【Video】 - HCBBS Forum
8. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 55 - HCBBS Forum
9. Management qualities required of project managers and technical leaders - HCBBS Forum
10. 【Daily Question】Question from Issue 20151217 - HCBBS Forum
11. Explosion at chemical plant in Jinzhou, Hebei: Person in charge arrested; plant has polluted groundwater for years - HCBBS Forum
12. Question --- Why can’t iron bars or carbon rods be inserted into the weld bead? - HCBBS Forum
13. How to obtain an intermediate professional title (engineer) - HCBBS Forum
14. Regarding flue gas desulfurization - HCBBS Forum
15. Let the best technical experts handle security work! - HCBBS Forum
16. balance tube - HCBBS Forum
17. I’d like to ask the experts: what is a dividing line? ? - HCBBS Forum
18. Questions regarding the examination policy for 2016 - HCBBS Forum
19. Which are the manufacturers of ultra-low temperature top-mounted ball valves for LNG? - HCBBS Forum
20. Issues with blending crude oil at reduced pressure and vacuum levels - HCBBS Forum
21. 【Security Article】How to manage security? 19 tips for you! - HCBBS Forum
22. Formation of aerobic granular sludge - HCBBS Forum
23. Daily Question, 2015.9.17 (EIA Discussion): 3 Wealth points as a reward for replying, plus 5 Wealth points for the correct answer (single-choice question) - HCBBS Forum
24. Distance between vertical circumferential welds and horizontal circumferential welds - HCBBS Forum
25. GC1 pipeline and GC2 pipeline - HCBBS Forum
26. Leakage standard for the air recovery line of the diaphragm unloader in reciprocating compressors - HCBBS Forum
27. Q&A on crude benzene hydrogenation refining technology - HCBBS Forum
28. Application scope of bolts in the ASME B18 series - HCBBS Forum
29. Valve selection - HCBBS Forum
30. Hydrogenation reactor dip head - HCBBS Forum
31. One question per week: Basics of polymers – What are the factors that affect the glass transition temperature? - HCBBS Forum
32. Looking for manufacturers capable of acid vapor stripping and sulfur recovery - HCBBS Forum
33. Safety Technology Exchange Edition: Daily Question (2016.7.11) - HCBBS Forum
34. Heze Chemical Group is recruiting one director for the instrumentation workshop and one for the electrical workshop - HCBBS Forum
35. Beautiful 3D factory design model - HCBBS Forum
36. What conditions are required for two chemical manufacturing companies to share a fire protection water system? - HCBBS Forum
37. Water vapor in the air - HCBBS Forum
38. Help, could any expert recommend a digital display with two output channels for transmission? - HCBBS Forum
39. Bidirectional diode, bidirectional thyristor speed control – unstable motor speed - HCBBS Forum
40. Haichuan’s “Season of Gratitude” – A tribute to the days we fought side by side over the years【Mechanical 003】 - HCBBS Forum
41. Xiao Jie is here to spend money - HCBBS Forum
42. What is the operating point of a centrifugal pump? - HCBBS Forum
43. Please recommend some books on the control principles of centrifugal compressors - HCBBS Forum
44. Is this a pump interlock? - HCBBS Forum
45. 【Guess the attractions at Haichuan Chemical Industry】How many heroes fought here in the 20s? Now, deep autumn brings red colors to the mountains - HCBBS Forum
46. sulfur dioxide - HCBBS Forum
47. Shandong Province encourages the construction of LNG and CNG gas supply stations - HCBBS Forum
48. Solution to Question 14 in the morning session of the 2014 Chemistry Exam – Discussion - HCBBS Forum
49. Advantages and disadvantages of Zhejiang University’s ECS700 and Hilscher’s K series - HCBBS Forum
50. Which is the best self-acting control valve for lubricating oil systems? - HCBBS Forum
51. The issue of whether the cycle compressor in the hydrogenation unit is equipped with a unloader - HCBBS Forum
52. Status of the outlet valve before starting the submersible pump - HCBBS Forum
53. On the handling of accidents in diesel hydrogenation units - HCBBS Forum
54. Phase 3: Installation of blind plates and pipe filters, special fittings d03【Video】 - HCBBS Forum
55. What is the difference between the general level and the expert level in calculating heat exchangers? - HCBBS Forum
56. What should I do if the degasifier of the oil skimming pump in my unit is not working properly? But the pressure doesn’t decrease. - HCBBS Forum
57. How can peeling of the inner wall of fiberglass storage tanks be prevented? - HCBBS Forum
58. The more repairs are made to the defects in the welds of 310 pipes, the more cracks appear - HCBBS Forum
59. How is p-hydroxybenzyl ether added to finished products as a polymerization inhibitor for acrylic acid and its esters? ? ? I’m seeking help from all the experts out there - HCBBS Forum
60. Factors to consider for the proper selection of conveyor drums - HCBBS Forum
61. What does the acidity of the ammonium sulfate mother liquor mean? - HCBBS Forum
62. [Daily Question] 20161211 Fill-in-the-blank: The inventory in the stripping section is mainly regulated by the opening degree of ( ). (Easy question)…… - HCBBS Forum
63. HG/T 30023-2016 Safety Technical Specifications for the Production of Low-Carbon Aliphatic Amines - HCBBS Forum
64. Issues with LNG screw compressors and methaneation flow rates - HCBBS Forum
65. High-pressure gas chamber testing of valves - HCBBS Forum
66. Where are the devices going? Contents of Factory Site Planning [Video] – Chemical Industry Weekly, Issue 91 - HCBBS Forum
67. Discussion on the application scenarios of extended differential pressure level transmitters - HCBBS Forum
68. On the implementation of mandatory and non-mandatory provisions in GB - HCBBS Forum
69. Design of heat exchangers - HCBBS Forum
70. How to treat acid-containing wastewater--besides neutralization - HCBBS Forum
71. 【Chlorine compressor】What is the purpose of the two streams of nitrogen that enter it? - HCBBS Forum
72. Is it necessary to test whether the safety valve returns to its original position automatically after it opens? - HCBBS Forum
73. How to choose the bearing model for a pump - HCBBS Forum
74. Recruitment Notice 2016 for Shenzhen Qingquan Water Industry Co., Ltd - HCBBS Forum
75. Are there butt-welded flanges available for the equipment? ? - HCBBS Forum
76. I’d like to ask everyone about the materials used in pipelines; those who know, please share. How many specific brands are there for BB, DB, and FBB? - HCBBS Forum
77. Article 2: Fire Protection in Buildings Chapter 3: Building Classification and Fire Resistance Ratings 4 - HCBBS Forum
78. Placement of lubricating oil tanks in the compressor building - HCBBS Forum
79. Seek titanium flange standards - HCBBS Forum
80. I first saw this design ten years ago - HCBBS Forum
81. Why are preventive measures against spontaneous combustion required when removing pre-hydrogenation catalysts that have been used but not regenerated? How should they be removed? - HCBBS Forum
82. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 341 - HCBBS Forum
83. Which literature does this content come from? - HCBBS Forum
84. Safety Technology Exchange Edition: Daily Question (2016.7.12) - HCBBS Forum
85. Are there any requirements regarding the service life of liquid chlorine liquefiers and chlorine turbine coolers? - HCBBS Forum
86. Relationship between gas flow rate and pressure - HCBBS Forum
87. Discussion on compressor air delivery volume issues - HCBBS Forum
88. Regarding the night compass issue - HCBBS Forum
89. Ultrasonic water meter - HCBBS Forum
90. Selection of mechanical seal flushing type - HCBBS Forum
91. Guidelines and reward system for the “Taste of Haichuan – Food Lovers of Haichuan Have Power” event! - HCBBS Forum
92. May I ask whether that type of gasification furnace can use steam containing combustible gases as a gasifying agent? - HCBBS Forum
93. Are there retention valves available in a 1/2 size? - HCBBS Forum
94. Which design codes should be referred to regarding the design life, wall thickness, and corrosion allowance of the device? - HCBBS Forum
95. DCS screen,. The meaning of the valve letters, - HCBBS Forum
96. Question for experts: Should a measurement reference plate be installed below the metering port of an underground tank at a gas station? Where there are standard specifications required. - HCBBS Forum
97. Tasting | The story is short, but its meaning is profound! 2016.9.6 - HCBBS Forum
98. Let’s discuss the issue of leak prevention for unit instruments - HCBBS Forum
99. Want to learn *how to read DCS logic diagrams - HCBBS Forum
100. Unit issues - HCBBS Forum