English — Forum #337 (Page 97/163)

1. What is the purpose of the tap water pipeline after methanol distillation? - HCBBS Forum
2. How to remove isomeric impurities - HCBBS Forum
3. Can liquefied petroleum gas be used for low-temperature extraction? - HCBBS Forum
4. Basic Process Knowledge (Multiple Choice) 20181123 - HCBBS Forum
5. Process abnormality - HCBBS Forum
6. Can DCS take signals from SIS and then adjust control valves (not on/off valves)? - HCBBS Forum
7. On the optimization of the start-up plan for liquid chlorine purification 【I’ve just graduated and have been working for a year; I don’t understand many things yet】 - HCBBS Forum
8. Epichlorohydrin - HCBBS Forum
9. Basic Process Knowledge (Multiple Choice) 20181010 - HCBBS Forum
10. Steam venting noise, static pressure at the pipe outlet - HCBBS Forum
11. Which PHAST8.0 tutorial - HCBBS Forum
12. On the feeding issue in negative pressure continuous distillation - HCBBS Forum
13. 0Cr14Ni14Si4 nitric acid-resistant stainless steel - HCBBS Forum
14. Issues with sulfuric acid recovery calculations - HCBBS Forum
15. Fundamentals of Processing Technology (Multiple Choice) 20181103 - HCBBS Forum
16. Control of two-effect evaporators - HCBBS Forum
17. The question of whether gaseous propane is endothermic - HCBBS Forum
18. Vacuum material extraction flow rate - HCBBS Forum
19. Energy consumption - HCBBS Forum
20. Design of engineering projects - HCBBS Forum
21. Absorption - HCBBS Forum
22. Questions regarding the calculation of pipeline pressure loss - HCBBS Forum
23. Fundamentals of Manufacturing Processes (Multiple Choice) 20180928 - HCBBS Forum
24. Basic Process Knowledge (Multiple Choice) 20180706 - HCBBS Forum
25. How are the grades for clean air conditioning classified? - HCBBS Forum
26. Basic Process Knowledge (Multiple Choice) 20180917 - HCBBS Forum
27. High-purity nano-alumina - HCBBS Forum
28. The steam flow rate fluctuated severely, and eventually it even became negative. - HCBBS Forum
29. Fundamentals of Manufacturing Processes (Multiple Choice) 20180723 - HCBBS Forum
30. Installation direction of the valve - HCBBS Forum
31. Basic Process Knowledge (Multiple Choice) 20180930 - HCBBS Forum
32. Negative pressure fans and dust - HCBBS Forum
33. Some doubts regarding the safety valve condition table - HCBBS Forum
34. Is isoprene a liquefied hydrocarbon? - HCBBS Forum
35. Looking for a reputable chemical engineering services company to carry out process package optimization and equipment manufacturing - HCBBS Forum
36. hysys10 version - HCBBS Forum
37. Aiming to create high-quality projects, comprehensive efforts are being made to advance project construction — Yueneng Chemical held a meeting to push forward the construction of projects aimed at filling in gaps - HCBBS Forum
38. Basic Process Knowledge (Multiple Choice) 20180705 - HCBBS Forum
39. How do you locate leaks in a negative pressure system? - HCBBS Forum
40. Seek advice on determining the recovery temperature for light hydrocarbons in natural gas - HCBBS Forum
41. There is gas in the inlet pipeline of the centrifugal pump - HCBBS Forum
42. Water quality issues in circulating water systems - HCBBS Forum
43. Safe flow rate for flammable liquids, need it urgently online! - HCBBS Forum
44. What are the differences and advantages/disadvantages between hemispherical-bottom tanks and inclined-bottom tanks in terms of application? - HCBBS Forum
45. Corrosion protection issues in steel frame buildings? - HCBBS Forum
46. Is it necessary to install surface thermocouples in the hydrogenation reactor as well? - HCBBS Forum
47. The wall temperature issue in safety valve calculations - HCBBS Forum
48. Regarding the utilization of heat at the compressor outlet? - HCBBS Forum
49. Vaporization amount - HCBBS Forum
50. 【HVAC Version】Daily Question 20180623 - HCBBS Forum
51. Fundamentals of Processing Technology (Multiple Choice) 20180712 - HCBBS Forum
52. Unit of thermal respiratory ventilation volume - HCBBS Forum
53. Tire pyrolysis - HCBBS Forum
54. Which specifications apply to pipes above PN420? - HCBBS Forum
55. Having questions about control valves? - HCBBS Forum
56. Selection of steam generators (waste boilers) in process units - HCBBS Forum
57. Fundamentals of Manufacturing Processes (Multiple Choice) 20180710 - HCBBS Forum
58. Automated control design consultation for disulfide carbohydrate canning - HCBBS Forum
59. Consultation on aldehyde removal technology - HCBBS Forum
60. Steam condensate tank design (help) - HCBBS Forum
61. 【HVAC Version】Daily Question 20180712 (Multiple Choice) - HCBBS Forum
62. What are the characteristics of on-site emission flares? - HCBBS Forum
63. Questions and inquiries regarding dust collectors. - HCBBS Forum
64. Problem of continuously rising temperature in the light diesel pipelines at the thermodynamic power station - HCBBS Forum
65. Dismantling of chemical plant - HCBBS Forum
66. Does the specific heat of a substance change with temperature, pressure, and other factors? - HCBBS Forum
67. 75-ton natural gas boiler - HCBBS Forum
68. Is the pressure analysis of the diesel tank correct? - HCBBS Forum
69. What is CDCO process? - HCBBS Forum
70. Removal of 1% water from methanol using 3A molecular sieve - HCBBS Forum
71. What is the minimum size of the opening at the end of an epoxy-coated steel pipe? Can manholes be made in the form of revolving covers? - HCBBS Forum
72. Questions about insulation materials - HCBBS Forum
73. Emergency pressure relief of medium-pressure equipment - HCBBS Forum
74. Fundamentals of Manufacturing Processes (Multiple Choice) 20180811 - HCBBS Forum
75. 【HVAC Version】Daily Question 20180713 (Multiple Choice) - HCBBS Forum
76. How can steam condensate at 260°C be utilized most economically? - HCBBS Forum
77. High-pressure hydrogen purification units (PSA/TPSA/VPSA), etc. – currently in China, it is possible to purify feed gases at very high pressures - HCBBS Forum
78. The butadiene storage tank needs to undergo inspection; what to do if the manhole screws cannot be removed? - HCBBS Forum
79. The non-heating area of the flange heating tube? - HCBBS Forum
80. When the reactor temperature rises excessively, why can the emergency pressure relief at 2.1 MPa/mi in hydrocracking prevent the reactor temperature from exceeding the design value? - HCBBS Forum
81. Hi, guys. I am working on the process design for a crude methanol purification unit with an annual production capacity of 400,000 tons - HCBBS Forum
82. Sodium metal treatment - HCBBS Forum
83. The truly amazing search function in Yokogawa’s engineer station configuration software - HCBBS Forum
84. Why is a control valve used at the steam outlet of a reboiler to regulate the flow rate? - HCBBS Forum
85. Leisure Sports Edition: One Question per Day, 2018-10-19 - HCBBS Forum
86. Is it only necessary to purge after the pressure pipeline testing is completed? - HCBBS Forum
87. Is it reasonable to install combustible gas detectors at the exhaust outlets of initial rainwater tanks? - HCBBS Forum
88. Calculation of pipe insulation thickness - HCBBS Forum
89. Is it necessary to install something to retain the activated carbon at the top of the backwash for the activated carbon filter? What is your structure? - HCBBS Forum
90. 【Mechanical Equipment Technology Edition】Daily Question 201806019: Refrigeration Systems — Study of Pressure-Humidity Diagrams of Refrigeration Parameters* (9) - HCBBS Forum
91. Changes in the explanatory section on \"Design requirements for evacuation stairs in factory buildings\" in the building codes - HCBBS Forum
92. Difference between bleed valve and drain valve - HCBBS Forum
93. Ton bag feeding - HCBBS Forum
94. Reasons for high circulating water temperature - HCBBS Forum
95. What category do initial rainwater ponds belong to? - HCBBS Forum
96. 【HVAC Version】Daily Question 20180615 - HCBBS Forum
97. Fundamentals of Manufacturing Processes (Multiple Choice) 20180708 - HCBBS Forum
98. Cylinder cross-section - HCBBS Forum
99. Basic Process Knowledge (Multiple Choice) 20180825 - HCBBS Forum
100. Are there any tips for starting up a DCS? - HCBBS Forum