English — Forum #723 (Page 392/642)

1. How old is your phone? Is there any plan to change the pace? - HCBBS Forum
2. Sharing of mechanical and electrical course materials for first-level construction engineers - HCBBS Forum
3. Operation and protection of common type compressors in winter - HCBBS Forum
4. What is the reason for the absence of flocs in the aerobic tank of wastewater treatment? - HCBBS Forum
5. What does heat exchangerϕΔt mean? - HCBBS Forum
6. Regarding the discussion on citing **laws and indicating the year they were enacted when writing special articles, it’s not clear. See main text - HCBBS Forum
7. How should the absorption coefficient be selected for the space-time calculation of flue gas desulfurization towers? - HCBBS Forum
8. What is the unit of measurement for the work related to acid washing and passivation of pipelines and equipment? - HCBBS Forum
9. Does methanol undergo a hydrogenation reaction with hydrogen? - HCBBS Forum
10. Sign-in record post from January 3, 2016 - HCBBS Forum
11. Seeking help with issues regarding the programmable valves in hydrogen production PSA systems - HCBBS Forum
12. I’m seeking advice on a compressor issue - HCBBS Forum
13. Safety Responsibility Agreement - HCBBS Forum
14. Fan shaft break stop safety device - HCBBS Forum
15. I have money, I don’t have money - HCBBS Forum
16. Why are centrifugal compressors rarely used in the process for producing 100,000 tons of synthetic ammonia per year? - HCBBS Forum
17. How can one make pork belly delicious? - HCBBS Forum
18. Explosion of the conversion heat exchanger - HCBBS Forum
19. Why is it difficult to achieve online monitoring + automatic control of injection with three injections? - HCBBS Forum
20. Regarding passive contacts in the I/O table - HCBBS Forum
21. Does the foundation of the alkali pump need to be protected against corrosion? - HCBBS Forum
22. Selection of valves capable of regulating flow rate - HCBBS Forum
23. PLC programming - HCBBS Forum
24. Conversion rate of light gasoline in the etherification of olefins - HCBBS Forum
25. Ammonia storage tank of refrigeration machine, liquid ammonia loading station, water spray system - HCBBS Forum
26. The issue with reduced-pressure wax oil - HCBBS Forum
27. Design of water tanks - HCBBS Forum
28. Oil transportation problems - HCBBS Forum
29. Recommendations for coal chemical property data books - HCBBS Forum
30. 「Haichuan Irrigation Co., Ltd. Convenience Store」A Moment of Relaxation - HCBBS Forum
31. How should valves in coking plants be maintained? - HCBBS Forum
32. Questions about metal hoses - HCBBS Forum
33. The outlet pressure of the metering pump has exceeded the limit - HCBBS Forum
34. 【Daily Question】1.9 Three Acids and Two Bases (3 wealth points for a reply + additional 3–8 wealth points for a correct answer) - HCBBS Forum
35. ★Specialized Examination for Chemical Engineering ★ — One question per day (2016-1-7) — Points are awarded for participation - HCBBS Forum
36. What does HL OVERRIDE on the PID diagram mean? How are high/low selection and override control specifically implemented? - HCBBS Forum
37. Temperature unit conversion formula - HCBBS Forum
38. Can high-temperature resistant pipe materials be replaced by insulating materials coated on ordinary carbon steel pipes? - HCBBS Forum
39. Who has the regulations for the acceptance and evaluation of construction quality in electric power projects, DL/T5210-2012? Urgently needed! - HCBBS Forum
40. What does LTGT mean in a sulfur recovery unit? - HCBBS Forum
41. Yield of products from diesel hydrogenation with different raw material ratios - HCBBS Forum
42. What type of invoice does an electrical maintenance technician use for repairs? - HCBBS Forum
43. The effluent from the contact oxidation process is not very clear - HCBBS Forum
44. Could you share what the economic indicators for the operation of Texaco gasifiers at various plants are? - HCBBS Forum
45. Regarding the design pressure of liquefied petroleum gas storage tanks - HCBBS Forum
46. Operating procedures for commissioning of ammonium sulfate saturator - HCBBS Forum
47. 【Joint Study*】【Civil Engineering Version 20160111】 - HCBBS Forum
48. What to do if the calcium and magnesium levels in the softened cooling water of a centrifugal pump are excessively high? - HCBBS Forum
49. Why is the ion product of water only related to temperature - HCBBS Forum
50. Recommendations for double flanges - HCBBS Forum
51. I just can’t help it - HCBBS Forum
52. Questions raised about dangerous construction projects! - HCBBS Forum
53. How to resolve blockages in pipelines transporting 48% hydrogen peroxide solution - HCBBS Forum
54. Process verification calculation for industrial furnaces - HCBBS Forum
55. Questions regarding surfacing welding - HCBBS Forum
56. How to increase the diesel flash point in atmospheric and vacuum distillation - HCBBS Forum
57. What kind of mixing paddles are used for modified asphalt, and where are the manufacturers located? - HCBBS Forum
58. 【Daily Question】 January 8th True or False Question - HCBBS Forum
59. Compressor inlet pressure - HCBBS Forum
60. Can walkie-talkie or mobile phone signals affect radio frequency admittance? - HCBBS Forum
61. 【Daily Question】 January 5th: When a heating furnace burns out, what is introduced into the radiant furnace tubes during the ignition and heating phase? ? ? ? - HCBBS Forum
62. 【Daily Topic】【Engineering Version 20160106】 - HCBBS Forum
63. Consultation on catalysts for hydrogen production from natural gas - HCBBS Forum
64. Process factors affecting the exhaust capacity of fans - HCBBS Forum
65. What materials should be chosen for perchlorate and bromide ionic liquids? - HCBBS Forum
66. Separation of calcium fluoride from gypsum - HCBBS Forum
67. Environmental Protection Daily Question 1.5: Participate for prizes; 3 correct answers earn an additional 5 prizes - HCBBS Forum
68. The liquid level issue in the torch cylinder - HCBBS Forum
69. The current market price of NoteChem is really low - HCBBS Forum
70. Weekly Topic: Which manufacturer’s oil remover do you use for the acidic water tank in acid water stripping units? - HCBBS Forum
71. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 254 - HCBBS Forum
72. Regarding registration for electrical engineers - HCBBS Forum
73. Are there any specific regulations for the abbreviations in the PRO II input data file? - HCBBS Forum
74. Rosemount Vortex Flow Meter Parameter Setting and Calibration Manual - HCBBS Forum
75. Smoking nicotinic acid color mixture - HCBBS Forum
76. Emission of flammable media - HCBBS Forum
77. How is the status of the pump control column implemented in DCS and SIS? How are the start/stop signals for pump motors obtained and displayed in the DCS? - HCBBS Forum
78. Thanksgiving event, division of tasks for the touring team - HCBBS Forum
79. What are the benefits at BASF in Shanghai? - HCBBS Forum
80. There is a problem with the DCS card in the device - HCBBS Forum
81. A106B steel pipes can be accepted with some concessions - HCBBS Forum
82. 【Joint Study*】【HVAC Version 20151230】 - HCBBS Forum
83. Fully threaded bolt - HCBBS Forum
84. What types of heating can be used for crude oil unloading tanks? - HCBBS Forum
85. 【Joint Study*】【Civil Engineering Version 20160102】 - HCBBS Forum
86. 【Daily Topic】【Engineering Version 20151229】 - HCBBS Forum
87. Radar level gauge blind zone - HCBBS Forum
88. Calculation problems for compressed air pipelines - HCBBS Forum
89. ★Specialized Examination for Chemical Engineering ★ — One question per day (2016-1-6) — Points are awarded for participation - HCBBS Forum
90. How do I open a Spreadsheet in HYSYS? Version 7.3, thank you so much to all the experts; I’m a beginner - HCBBS Forum
91. Positioning of piping equipment - HCBBS Forum
92. Tantalum and niobium leachate - HCBBS Forum
93. Are copper oxide, basic copper carbonate, and nickel sulfate dust considered explosive dusts? - HCBBS Forum
94. Viscosity unit cst - HCBBS Forum
95. I read some lovely words today - HCBBS Forum
96. Water filling of spherical tank - HCBBS Forum
97. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 407 - HCBBS Forum
98. Seeking information on the physical properties of vinyl isooctanoate and vinyl sebacate - HCBBS Forum
99. How to obtain professional titles and what certificates do I need to get - HCBBS Forum
100. Questions for the Special Equipment – Pressure Vessel Operation Exam - HCBBS Forum