English — Forum #723 (Page 11/642)

1. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 450 - HCBBS Forum
2. How should facilities that have not been in operation for a long time be managed? ? - HCBBS Forum
3. Seeking help with liquid level measurement in ammonia spherical tanks - HCBBS Forum
4. The aerobic tank is green in color - HCBBS Forum
5. Issues with purging during catalytic unit shutdown for maintenance - HCBBS Forum
6. What are the types of groundwater pollution that you are aware of? - HCBBS Forum
7. Q&A on the Newly Revised Regulations on Work-related Injury Insurance - HCBBS Forum
8. Downstream products of phosphorus trichloride - HCBBS Forum
9. Issues with the shaft vibration signals of the compressor? - HCBBS Forum
10. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 314 [ - HCBBS Forum
11. Regular drainage of the reformation waste heat boiler - HCBBS Forum
12. The Rockets fell short and suffered a heartbreaking loss to the Spurs - HCBBS Forum
13. Catalytic cracking - HCBBS Forum
14. 【Weekly Topic】【Electrical Edition 20160805】 - HCBBS Forum
15. Discussion on shielded pumps for transporting high-purity tetrachlorosilane (silicon tetrachloride) - HCBBS Forum
16. On the comprehensive treatment of coal chemical industry wastewater - HCBBS Forum
17. Failure modes of heat exchangers - HCBBS Forum
18. 【Southern Power Grid】Special Topic on Overseas Recruitment for International Limited Company - HCBBS Forum
19. Nitrogen purging of the MTBE catalyst; bed temperature drops to below zero - HCBBS Forum
20. 【International Women’s Day】Praising the women around me – the queens of strength and beauty - HCBBS Forum
21. Key technical points for the installation and use of mechanical seals - HCBBS Forum
22. How should the personnel be arranged in the class? - HCBBS Forum
23. How do Φ and DN correspond to each other for pipes and pipe fittings? - HCBBS Forum
24. I would like to ask whether the return line of a reciprocating compressor is installed at the time the compressor leaves the factory - HCBBS Forum
25. The purpose of the ball passage test - HCBBS Forum
26. How to avoid corrosion caused by potential differences resulting from contact between different materials - HCBBS Forum
27. What factors should be considered when formulating a lifting plan? - HCBBS Forum
28. Refinery units, pipelines, instruments, flowchart legends - HCBBS Forum
29. 【Daily Question】11.25 Essay Question: What are the functions of lubricating oil? (Answer any five of them.) - HCBBS Forum
30. Usage of CAPCOST - HCBBS Forum
31. thermocouple - HCBBS Forum
32. What are the conditions for hot start of a circulating fluidized bed boiler? - HCBBS Forum
33. Emergency! - HCBBS Forum
34. Are there any manufacturers in China that produce complete vacuum system kits? - HCBBS Forum
35. 【Weekly Topic】【Production Version 20160216】 - HCBBS Forum
36. What pump should be used to transfer material containing 10% solid particles? - HCBBS Forum
37. Seek the production process for sodium method bleaching powder - HCBBS Forum
38. Reduction furnace is in operation! - HCBBS Forum
39. Galvanized steel pipe - HCBBS Forum
40. Why can’t we break the golden egg? The teacher indicates that the points are insufficient - HCBBS Forum
41. Regarding the thickness limit of the reinforcement ring - HCBBS Forum
42. [Mid-Autumn Special Program] Riddle Guessing 13 - HCBBS Forum
43. 【Weekly Topic】【Storage & Transportation Version 20160624】 - HCBBS Forum
44. Hydrogenation accident handling - HCBBS Forum
45. Johnson’s micro gear pump ads are quite good – what’s the impact? - HCBBS Forum
46. Why are the methods for preparing the buffer solutions used in hardness measurement different? - HCBBS Forum
47. 【Weekly Topic】【 Quality Version 20160811】 - HCBBS Forum
48. Badger styrene process: leak issue in the ethylbenzene unit reboiler - HCBBS Forum
49. Daily Safety and Fire Protection Question (11.15) - HCBBS Forum
50. 【Focus Interview】Without eliminating hidden dangers, safety cannot be ensured! - HCBBS Forum
51. Staying in a comfortable environment for too long can make one very negative - HCBBS Forum
52. Safety Technology Exchange Edition: Daily Question (2016.5.20) - HCBBS Forum
53. Where can Primene JMT from Rowman & Hassell be purchased in China? How much is it roughly? - HCBBS Forum
54. The problem of heating conductive fluids by electromagnetic waves - HCBBS Forum
55. Double shell and plate calculation - HCBBS Forum
56. Share | How Small Businesses Can Implement Quality Risk Management - HCBBS Forum
57. Is the acceptance of plastic pipes the same as that of metal pipes? - HCBBS Forum
58. Problem: The burner cooling water cut-off valve cannot be closed properly - HCBBS Forum
59. 【First-Class Constructor Project Management Practice Questions】031 Submitting Bid Documents - HCBBS Forum
60. Disagreements regarding the answers to \"Methods for identifying leaking tubes in the external heat exchangers of catalytic cracking units\" - HCBBS Forum
61. Naphtha-blended gasoline - HCBBS Forum
62. What are the advantages and disadvantages of installing in-situ level gauges on the head and the body of a horizontal tank? - HCBBS Forum
63. Handover of cathode liquid phase pipeline for maintenance - HCBBS Forum
64. What does the plenum of an air cooler refer to? - HCBBS Forum
65. For the oxidation of cyclohexane to **, is uncatalyzed oxidation or catalyzed oxidation mainly used? - HCBBS Forum
66. Help needed with a year-end thesis - HCBBS Forum
67. How to handle a fire in a residue tank? - HCBBS Forum
68. Is there a systematic approach to analyzing the reasons? - HCBBS Forum
69. Regarding the issue of multiple blind flanges on one device - HCBBS Forum
70. 【Q&A Question 055】June 14, 2016 - HCBBS Forum
71. Regarding the preheating temperature of Cr-Mo steel tube sections - HCBBS Forum
72. The authentic method for preparing salt-baked chicken, a specialty from Guangdong - HCBBS Forum
73. What subjects do candidates for a Certified Safety Engineer need to take? - HCBBS Forum
74. Turbine compressor - HCBBS Forum
75. How should sudden increases in water content in the gas caused by moisture in the reformation feed be handled? (Continuous reforming unit) - HCBBS Forum
76. One Question per Day, October 9, 2015 - HCBBS Forum
77. What should be considered when changing the range of a flow transmitter online? - HCBBS Forum
78. 【Daily Question】Question from Issue 20151111 - HCBBS Forum
79. Consulting on wastewater treatment plant investment - HCBBS Forum
80. In the polyethylene plant, what is the ethylene flow rate in the reaction system? If the flow rate is too large or too small, what are the disadvantages... - HCBBS Forum
81. What is the separation diameter of ultrafiltration membranes and nanofiltration membranes? - HCBBS Forum
82. Segmented solution treatment of austenitic stainless steel - HCBBS Forum
83. 【Daily Question】2015.10.29 (1 wealth point for replying, plus 3–8 additional wealth points for a correct answer) - HCBBS Forum
84. Operating costs of biomass boilers - HCBBS Forum
85. Shielded pump bearing wear - HCBBS Forum
86. Released on 10.2.2023: video on safety education for workers before entering the workplace. The entire set of videos is too large to be uploaded - HCBBS Forum
87. What are the exposure conditions for occupational hazards? - HCBBS Forum
88. How can the coal chemical industry emerge from its downturn! - HCBBS Forum
89. Suspecting demagnetization of a magnetic pump – how to measure the strength of the magnetism - HCBBS Forum
90. 【Daily Question】1.25 Multiple-choice question: It is generally referred to as a process that only changes the external state and shape of a substance, without altering its composition... - HCBBS Forum
91. What are the standards for pipe supports? - HCBBS Forum
92. CAD drawing issues - HCBBS Forum
93. What are the requirements for water injection quality? - HCBBS Forum
94. Heating furnace for diesel and gasoline hydrogenation unit - HCBBS Forum
95. What methods are used for the deep dehydration of ethylene glycol produced industrially? - HCBBS Forum
96. Solutions for the decrease in outlet pressure of the heat transfer medium circulation pump - HCBBS Forum
97. Problems with boiler steel platforms and steel ladders - HCBBS Forum
98. Second-hand textbooks for certified consultants - HCBBS Forum
99. Does the reaction temperature affect the solid content and ash content of the slurry? - HCBBS Forum
100. Equipment configuration for processing 30-mesh to 50-mesh bentonite - HCBBS Forum