English — Forum #723 (Page 508/642)

1. 【Daily Question】Question from Issue 20150927 - HCBBS Forum
2. How to maintain the heat exchanger tube bundle over a long period of time. - HCBBS Forum
3. Nitrogen purging for new LPG storage tanks - HCBBS Forum
4. Usually, two distillation lines are set up in the primary line - HCBBS Forum
5. 【Daily Question】Question from Issue 20150925 - HCBBS Forum
6. 【Daily Question】10.1 Back +2； For +3 to 8, a National Day red envelope is issued - HCBBS Forum
7. Questions regarding the ammonia compressor oil station - HCBBS Forum
8. 【Daily Question】2015.09.24 Leakage Test (2 Wealth points for a reply + 3–8 additional Wealth points for a correct answer) - HCBBS Forum
9. Classification of design permission levels - HCBBS Forum
10. A brief analysis of the causes of deformation in the steel structural components of cranes - HCBBS Forum
11. Features and working process of fully automatic heat transfer printing machines - HCBBS Forum
12. How can coke catch fire quickly to be used as household charcoal? - HCBBS Forum
13. Regarding the flow-limiting orifice plate designed for the pump outlet. - HCBBS Forum
14. The net octane rating of MTBE? - HCBBS Forum
15. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 183 - HCBBS Forum
16. Boiling bed hydrogenation technology at home and abroad - HCBBS Forum
17. 【Daily Question】Question from Issue 20150923 - HCBBS Forum
18. Regarding the installation of oxygen detectors - HCBBS Forum
19. Could you recommend which refineries in China currently have hydrogenation units with a capacity of 1.6 million tons per year? - HCBBS Forum
20. What material should be used for pipelines carrying 25% ethylene glycol aqueous solutions? - HCBBS Forum
21. Material requirements for oxygen buffer tanks - HCBBS Forum
22. Seek drawings for a three-pass atmospheric pressure gas water heater - HCBBS Forum
23. Installation of steam drum - HCBBS Forum
24. Recommended manufacturers of nitrogen production systems - HCBBS Forum
25. What is the purpose of introducing air at the bottom of the post-reaction tank in a saline solution? - HCBBS Forum
26. Difference between NPN and PNP output types of proximity switch sensors and their corresponding wiring methods - HCBBS Forum
27. Recruitment for MTO and styrene technicians - HCBBS Forum
28. Innocence is a knife that binds women! ! - HCBBS Forum
29. Issues with container lining selection - HCBBS Forum
30. Net weight of the container on the product nameplate per the Fixed Capacity Regulations - HCBBS Forum
31. Help, please everyone come and take a look – are the requirements put forward by the design institute reasonable? - HCBBS Forum
32. There is an employee in the team who has just become a father. What should the team leader do? - HCBBS Forum
33. What is the quality of isoprene separated from the C5 fraction at present? Can it meet the downstream demands for isoprene rubber and similar products in our country? - HCBBS Forum
34. Oxygen content in the blend within the gasoline hydroetherification unit - HCBBS Forum
35. Rust prevention issues - HCBBS Forum
36. VCM Shutdown and Maintenance Plan - HCBBS Forum
37. Is there a general ranking for forum points? - HCBBS Forum
38. Is it necessary to install a safety valve on the water cut tank of a spherical tank? - HCBBS Forum
39. The acidic water in the atmospheric pressure tower top reflux tank contains 600 PPM of oil; what methods can be used to reduce this oil content? - HCBBS Forum
40. What is the function of the electric heater in the ammonia synthesis tower? - HCBBS Forum
41. Adjust the speed of steam pump 505 from 3000 revolutions per minute to 600 revolutions per minute - HCBBS Forum
42. What are the ten prohibitions regarding fire and explosion prevention? - HCBBS Forum
43. Analysis of the thermally stable salts of desulfurization agents - HCBBS Forum
44. Backblowing air source for bag dust collectors – calculation of air consumption - HCBBS Forum
45. What should be done when the coal powder angle valve in the coal gasifier gets blocked? - HCBBS Forum
46. Question 41, True/False on boiler foundations on September 24: (A certain score will be given to the top 40) - HCBBS Forum
47. 【Weekly Question for October 1】What are the hazards of excessive drum water level in a circulating fluidized bed boiler? - HCBBS Forum
48. Daily Question 2015.9.24 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
49. How to calculate the processing capacity of a vacuum belt filter? - HCBBS Forum
50. The liquid chlorine magnetic pump fails to deliver flow - HCBBS Forum
51. Primary side line to normal line external delivery - HCBBS Forum
52. What are the types of maintenance and repair for cranes? - HCBBS Forum
53. What foods are good for stomach problems? - HCBBS Forum
54. How does the coal tar processing industry prevent coking in heat exchangers? - HCBBS Forum
55. Briefly describe the differences between manual and electric single-girder bridge cranes - HCBBS Forum
56. Co-combustion of biochemical sludge - HCBBS Forum
57. Request PID diagram for 3.5 million tons of heavy oil catalytic cracking - HCBBS Forum
58. Summary of difficult issues in the VCM unit during project construction or production - HCBBS Forum
59. One post per day on occupational health - HCBBS Forum
60. Why are gate valves so widely used? - HCBBS Forum
61. Regarding the calibration cycle for gas ultrasonic flowmeters - HCBBS Forum
62. The inlet flow rate at the second stage of the propylene separator for olefin separation is outside the specified range - HCBBS Forum
63. Process drawing - HCBBS Forum
64. I’m a beginner in instrumentation; I seek advice from experts everywhere - HCBBS Forum
65. 【Daily Question】9.28 True or False: Motors cannot be started continuously. (Reply +2) - HCBBS Forum
66. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 320 - HCBBS Forum
67. [Forward] – A perfect woman exists only in dreams! - HCBBS Forum
68. What are the welding methods for long welds? - HCBBS Forum
69. National Day reading list: New explorations of humanity’s unsolved mysteries - HCBBS Forum
70. Can a thermometer be installed on the top of the tank? - HCBBS Forum
71. Regeneration system for absorbing hydrogen sulfide and carbon dioxide - HCBBS Forum
72. Selection of control strategies for switching power supplies - HCBBS Forum
73. 【Daily Question】Question from Issue 20150927 - HCBBS Forum
74. 【Daily Question】Question from Issue 20151007 - HCBBS Forum
75. Engineering example diagrams of automatic control instruments, - HCBBS Forum
76. Issues regarding sample collection in chemical plants during rainy weather - HCBBS Forum
77. How can large equipment such as cranes be managed effectively? - HCBBS Forum
78. Questions regarding vacuum pumps: “The vacuum level is too high, making condensation difficult” - HCBBS Forum
79. Plugins and additional features for Aspen V8.4 - HCBBS Forum
80. One post per day - HCBBS Forum
81. What do Mor and T/D mean in the operating conditions of centrifugal compressors? - HCBBS Forum
82. What is the reaction equation for converting natural gas into syngas? Thank you! - HCBBS Forum
83. Looking at a company through the seven-day National Day holiday - HCBBS Forum
84. Energy consumption of wastewater stripping unit - HCBBS Forum
85. Questions and concerns regarding the interlock test of the device after maintenance? Everyone is welcome to offer their advice - HCBBS Forum
86. Problem with Aspen batch initialization - HCBBS Forum
87. Sensitivity analysis - HCBBS Forum
88. What are the explosion-proof requirements for ammonia refrigeration equipment? - HCBBS Forum
89. Problems with the ammonia compressor oil station - HCBBS Forum
90. 【Daily Question】Chemical Engineering Principles 195: Binary Mixtures (October 7) - HCBBS Forum
91. Issues with the quality of the power wave S801 screws - HCBBS Forum
92. Recruitment for Synthetic Ammonia Process Engineers - HCBBS Forum
93. Request: Safety Technical Specifications for Temporary Power Distribution Boxes in Petrochemical Engineering SH/T 3556-2015 - HCBBS Forum
94. What should I do? I’m extremely afraid about life in the future - HCBBS Forum
95. How to seal the maintenance access of a pressurized rectangular container - HCBBS Forum
96. Chemical Engineering in Daily Life – Question 85: Are the hygiene practices followed when preparing animal-based foods? - HCBBS Forum
97. Here’s a small question: What is God called in terms of traffic? . . . . . - HCBBS Forum
98. Collection of challenges in pipeline engineering construction - HCBBS Forum
99. 1 tael, 2 taels, 3 taels at Chengdu noodle shops - HCBBS Forum
100. Issue regarding the automatic appearance of the IO point panel when the Yokogawa CS3000 enters the flowchart screen - HCBBS Forum