English — Forum #337 (Page 94/163)

1. With 6 cubic meters of water, a lift height of 32 meters, and a flow rate of 25 cubic meters per minute, how long can a pump operate to pump water through DN25 pipes? What is the specific algorithm? - HCBBS Forum
2. 【Daily Question】【Static Equipment AC Version...Question 23】December 8, 2018 – True/False Multiple Choice....Enter to win a prize - HCBBS Forum
3. For continuously operating devices, what should be the selected mode in the event of a failure in the control valve? - HCBBS Forum
4. What does Zone C Class B mean? - HCBBS Forum
5. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190116 - HCBBS Forum
6. 【Daily Question】 【AC Version for Static Equipment...Question 36】 February 5, 2019 – True/False Multiple Choice Question...A Happy Family - HCBBS Forum
7. Is the effect of temperature on the hydrogenation reaction reflected in catalyst activity? - HCBBS Forum
8. [Daily Question] Basic Process Knowledge (True/False) 20190419 - HCBBS Forum
9. [Daily Question] Basic Process Knowledge (True/False) 20190415 - HCBBS Forum
10. 【Daily Question】 【AC Version for Static Equipment...Question 55】 February 24, 2019 – True/False Multiple Choice Question...Everything is going well - HCBBS Forum
11. Design division of labor - HCBBS Forum
12. Question regarding cut-off valves - HCBBS Forum
13. Fire safety issue: How many small containers of Class A liquids can be placed outside a Class C workshop? - HCBBS Forum
14. Has the home page of Haichuan Chemical Forum been changed? - HCBBS Forum
15. Sampling cylinder - HCBBS Forum
16. Fundamentals of Manufacturing Processes (Multiple Choice) 201812 8 - HCBBS Forum
17. In the picture, what does it mean that PPV12251 is not only interlocked with PIC12255, but also interlocked with TPV12251? - HCBBS Forum
18. Let’s communicate together - HCBBS Forum
19. Safety Tip of the Day: One Image at a Time – Think More, Be Prepared - HCBBS Forum
20. When the number of safety valves on a spherical tank is ≥2, is it necessary for their setting pressures to have a gradient? - HCBBS Forum
21. May I ask, the cooling circulating water is used to regulate the temperature of the condensate; should the control valve be installed on the inlet pipe or the return pipe of the circulating water? - HCBBS Forum
22. Detailed Explanation of Safety Design and Operation Specifications for Storage Tanks - HCBBS Forum
23. Fundamentals of Manufacturing Processes (Multiple Choice) 201812 2 - HCBBS Forum
24. Add a sampling port - HCBBS Forum
25. Reference for chemical process diagrams - HCBBS Forum
26. Piping design issues - HCBBS Forum
27. Chemical pipeline installation - HCBBS Forum
28. What is the difference between an intermediate tank and a plant storage tank? - HCBBS Forum
29. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190107 - HCBBS Forum
30. Should the exhaust branch pipes for reactors, storage tanks, etc. be connected to the top, bottom, or side of the main exhaust pipe? - HCBBS Forum
31. MTBE - HCBBS Forum
32. May I ask how many methanol storage tanks are there on a mobile platform used to be temporarily moved to a factory or some other location? As for that factory... - HCBBS Forum
33. Help with process flow diagram - HCBBS Forum
34. Besides using hoses, what other methods are there for unloading yellow phosphorus? - HCBBS Forum
35. Issues regarding the butanol distillation grade of procaine penicillin - HCBBS Forum
36. List of petroleum storage tank codes - HCBBS Forum
37. Installation of steam condensate pipes and condensate collection tanks in the workshop - HCBBS Forum
38. Regarding the labeling of steel products - HCBBS Forum
39. Issues related to refrigeration compressors - HCBBS Forum
40. Can the exhaust gas from liquid sodium cyanide storage tanks be vented directly? - HCBBS Forum
41. Does the PSA nitrogen generation unit produce wastewater? - HCBBS Forum
42. [Daily Question] Basic Process Knowledge (True/False Questions) 20190404 - HCBBS Forum
43. Argon shielding for stainless steel pipe welding - HCBBS Forum
44. [Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 04–11] - HCBBS Forum
45. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190123 - HCBBS Forum
46. [Daily Question] Basic Process Knowledge (True/False Questions) 20190424 - HCBBS Forum
47. How long after the device stops operating does it need to have its pressure refilled? - HCBBS Forum
48. I have a liquid that needs to evaporate; which type of evaporation equipment should I choose? - HCBBS Forum
49. For using flue gas to evaporate wastewater, should it be done through direct evaporation or indirect evaporation? ! - HCBBS Forum
50. Foreign standards or engineering examples regarding the storage time of chemical raw material tanks - HCBBS Forum
51. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190219 - HCBBS Forum
52. What standards should the water quality of heat exchangers meet? - HCBBS Forum
53. Regarding the flue gas temperature of the waste heat boiler - HCBBS Forum
54. Which design firm is good for bromine recovery? - HCBBS Forum
55. Fundamentals of Processing Technology (Multiple Choice) 20181226 - HCBBS Forum
56. Regarding the pressure testing standard for the jacket of a reactor, what multiple of the design pressure is specified? How long is the holding time? - HCBBS Forum
57. Heat exchanger simulation calculation - HCBBS Forum
58. May I ask whether a manual valve is also allowed to be installed at the root of the safety valve in accordance with the specifications? - HCBBS Forum
59. 【Daily Question】【AC Version for Static Equipment...Question 52】February 21, 2019 – True/False Question...Everything is going well - HCBBS Forum
60. Can’t understand the drawings; seeking help from experts - HCBBS Forum
61. What do PID control and sequential control mean? - HCBBS Forum
62. Waste pot - HCBBS Forum
63. 【Daily Question】 【AC Version for Static Equipment...Question 30】 December 15, 2018 – True/False Multiple Choice...Enter to win a prize - HCBBS Forum
64. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190220 - HCBBS Forum
65. On the transportation of methanol and propanol mixtures - HCBBS Forum
66. Fundamentals of Manufacturing Processes (Multiple Choice) 20181227 - HCBBS Forum
67. Is it necessary to close the inlet and outlet valves of the compressor to relieve pressure in the event of an emergency shutdown? - HCBBS Forum
68. How to copy logistics data in PROII? - HCBBS Forum
69. 【Daily Question】 【AC Version for Static Equipment...Question 89】 March 30, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
70. Problem of the flow direction of gases at different pressures in pipelines - HCBBS Forum
71. May I ask that if the inner surface of carbon steel is protected with epoxy coal tar pitch, can a support still be welded to the outside of the tank? - HCBBS Forum
72. Is an ethylene glycol aqueous solution flammable? - HCBBS Forum
73. Wheel cleaning - HCBBS Forum
74. Dear teachers, what are the key aspects that need to be learned during the commissioning phase of an ethylene plant? - HCBBS Forum
75. In which sector does flue gas desulfurization and denitration fall? - HCBBS Forum
76. Maximum closing pressure difference before the control valve - HCBBS Forum
77. Pump sealing system - HCBBS Forum
78. How to determine the drain temperature for shell and tube heat exchangers - HCBBS Forum
79. How to calculate the water volume for hot water tracing - HCBBS Forum
80. I hope experts can share the process flow diagram for methanol, along with the corresponding plant layout diagram. Thank you - HCBBS Forum
81. Can too rapid pressure relief during gasification unit shutdown cause the liquid level in the gasification furnace to rise? Thank you! - HCBBS Forum
82. Does the flow meter require a bypass and inlet/outlet isolation valves? - HCBBS Forum
83. Pipeline configuration issue - HCBBS Forum
84. Process design for vinyl acetate production - HCBBS Forum
85. How tall must a chimney be to have a significant self-levitation effect? ! - HCBBS Forum
86. After offline chemical cleaning of the first-stage reverse osmosis system, the pressure difference increases rapidly – it rose by 40 kPa in just one week. Could some experienced colleagues help analyze this? - HCBBS Forum
87. What line types are used when drawing construction drawings? - HCBBS Forum
88. Synthesis of vinyl acetate by the ethylene method - HCBBS Forum
89. Must the flow meter have a neck? - HCBBS Forum
90. Issues related to Class A storage tanks and Class A warehouses in building codes - HCBBS Forum
91. Does anyone know the reason why the slurry used for flue gas desulfurization and denitration in ammonia-based catalytic cracking turns red? - HCBBS Forum
92. Questions regarding the calculation of water vapor enthalpy - HCBBS Forum
93. How to put a temperature and pressure reducer into use - HCBBS Forum
94. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190203 - HCBBS Forum
95. Can hydrogen sulfide be stored centrally in Class A warehouses? - HCBBS Forum
96. Methods for treating high concentrations of nitrogen oxides - HCBBS Forum
97. Great love, Haichuan! ! - HCBBS Forum
98. 【Daily Question】【AC Version for Static Equipment...Question 14】November 28, 2018 – True/False Multiple Choice Question.... - HCBBS Forum
99. Common Hazards Catalogue: Essential Material for Employee Safety Training - HCBBS Forum
100. Methane water vapor conversion - HCBBS Forum