English — Forum #337 (Page 88/163)

1. Should a manual valve be installed in front of the breather valve on the storage tank? Is it allowed to install? What about the safety valve? - HCBBS Forum
2. Differences and determination of several back pressures in safety valve calculations - HCBBS Forum
3. 【Daily Question】 【AC Version for Static Equipment...Question 39】 December 24, 2018 – True/False Multiple Choice...Enter to win a prize - HCBBS Forum
4. 【Daily Question】 【AC Version for Static Equipment...Question 11】 January 11, 2019 – True/False Multiple Choice Question...Safe travels - HCBBS Forum
5. [Daily Question] Basic Process Knowledge (True/False) 20190308 - HCBBS Forum
6. Is there a standard for the size of the gap between the equipment maintenance platform and the equipment? - HCBBS Forum
7. What should be done if the steam trap doesn’t have enough time to drain the condensate? ? - HCBBS Forum
8. [Daily question] [Static Equipment Exchange Edition...Question 114] Adapted multiple choice question on April 24, 2019...all the best - HCBBS Forum
9. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190224 - HCBBS Forum
10. [Daily Question] Basic Process Knowledge (Fill-in-the-blank) 20190212 - HCBBS Forum
11. 【Daily Question】 【AC Version for Static Equipment...Question 26】 December 11, 2018 – True/False Multiple Choice...Enter to win a prize - HCBBS Forum
12. What effects will it have if river water with an SS level of around 50 mg/L is coagulated but does not settle, and then directly fed into an immersion ultrafiltration system? - HCBBS Forum
13. Fundamentals of Manufacturing Processes (Multiple Choice) 20181223 - HCBBS Forum
14. I was wondering – in the petrochemical regulations, were no requirements specified regarding the distance between Class B factories and Class E factories? But to follow the petrochemical regulations, which ones can be found? - HCBBS Forum
15. DCS panel - HCBBS Forum
16. It’s been six years since I graduated; I’ve been working in the petrochemical industry. Can I work at a process design institute? - HCBBS Forum
17. Introduction to Valve Knowledge – Complete Version_-_(Part 1).ppt - HCBBS Forum
18. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190126 - HCBBS Forum
19. Is titanium tube resistant to hydrochloric acid? Urgently need help! - HCBBS Forum
20. Gas fractionation unit, propylene compression heat pump process – how does the propylene distillation section come online? ? - HCBBS Forum
21. May I ask how distillation calculations are performed? Are there any books needed as references, or is software required? - HCBBS Forum
22. I’d like to ask an expert: Why can ice slurry be used to slow down the rate of chemical reactions? - HCBBS Forum
23. Calculation of U-bend height - HCBBS Forum
24. Looking for Aspen Plus version 8.0 - HCBBS Forum
25. May a DN15 steam pipe be used to supply heat for insulation of the equipment’s insulation layer? What is the general approach? - HCBBS Forum
26. How to calibrate pressure transmitters using a HART handheld communicator - HCBBS Forum
27. Discussion on the advantages and disadvantages of the cyclohexanol dehydrogenation process - HCBBS Forum
28. Which sea friend has the process hazard inspection form? - HCBBS Forum
29. Problems with flow control of pipeline booster pumps - HCBBS Forum
30. On the PID diagram, the pump inlet appears to be a type of throttling device – what does that mean? - HCBBS Forum
31. Instrument safety system settings - HCBBS Forum
32. Calculation for container selection - HCBBS Forum
33. [Daily Question] Basic Process Knowledge (True/False Questions) 20190324 - HCBBS Forum
34. 【Daily Question】 【AC Version for Static Equipment...Question 116】 April 26, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
35. Should property parameters be taken based on the average concentration of the material in heat exchanger calculations? - HCBBS Forum
36. How to convert the water content in flue gas - HCBBS Forum
37. Setting of the size of the circulating water pool - HCBBS Forum
38. Discussion on firewalls in the GB50016-2014 (2018) Code for Fire Protection Design of Buildings - HCBBS Forum
39. Information related to the propylene oxide production process - HCBBS Forum
40. What are the differences between the absorption stabilization system of catalytic units and the light hydrocarbon recovery system in newly built units? - HCBBS Forum
41. How to use the steam from the air cooler coil - HCBBS Forum
42. I’m seeking help from experts regarding mixing issues in reaction tanks - HCBBS Forum
43. How to find the enthalpy-concentration diagram for the hydrogen chloride-water system - HCBBS Forum
44. 【Daily Question】 【AC Version for Static Equipment...Question 40】 December 25, 2018 – True/False Question...Merry Christmas - HCBBS Forum
45. Scope of application of GBT 37243-2019 - HCBBS Forum
46. 【Daily Question】 【AC Version for Static Equipment...Question 10】 January 10, 2019 – True/False Multiple Choice Question...Good luck out there! - HCBBS Forum
47. [Daily Question] Basic Process Knowledge (True/False Questions) 20190405 - HCBBS Forum
48. Steps for putting the flowmeter into use - HCBBS Forum
49. Who has a collection of questions from the petrochemical subset of the question bank for the vocational skill assessment of polypropylene plant operators? - HCBBS Forum
50. Is the pressure drop in pipes flowing upward and downward the same? - HCBBS Forum
51. 【Daily Question】【AC Version for Static Equipment...Question 17】December 1, 2018 – True/False multiple-choice question....Enter to win a prize - HCBBS Forum
52. Steam ejector switching - HCBBS Forum
53. HYSYS crude oil simulation - HCBBS Forum
54. Design planning for hospital laboratories - HCBBS Forum
55. Does a toluene storage tank require a backup tank? - HCBBS Forum
56. How is the enthalpy value of diesel calculated under different temperatures and pressures? - HCBBS Forum
57. Separation scheme for mixed organic solutions - HCBBS Forum
58. Distance from the tank roof outlet to the tank wall, and to the center of the tank - HCBBS Forum
59. 【Daily Question】 【AC Version for Static Equipment...Question 90】 March 31, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
60. Comprehensive Introduction to Valve Knowledge_-_(Part 2).ppt - HCBBS Forum
61. I would like to ask: if only condition diagrams for pressure vessels are required, and no design qualification for pressure vessels is available, can drawings be prepared with just a Class B environmental protection qualification? - HCBBS Forum
62. Antioxidant reverse osmosis membranes and ion exchange resin materials - HCBBS Forum
63. Liquefied gas tank truck - HCBBS Forum
64. Must all pipes and equipment in explosion-proof areas be statically grounded? Do some ordinary medium pipes also need to be electrostatically grounded? - HCBBS Forum
65. Vinyl acetate by the ethylene method - HCBBS Forum
66. Valve frozen damage - HCBBS Forum
67. [Daily Question] Basic Process Knowledge (Fill-in-the-blank) 20190422 - HCBBS Forum
68. What is the relationship between ammonia concentration and pH? Is there a relevant comparison table? - HCBBS Forum
69. Solid material sealing method - HCBBS Forum
70. API610 pump data sheet - HCBBS Forum
71. Issues related to piping of copper alloy pipes and fittings - HCBBS Forum
72. Does the size of the storage tank affect the flow rate of the transfer pump? - HCBBS Forum
73. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190225 - HCBBS Forum
74. What could be the problem if a magnetic flap level gauge does not display anything? The float does not flip over - HCBBS Forum
75. I have a question: if a Class A device (one that uses methanol) is to be installed in the workshop, how should the fire hazard level of this building be classified? - HCBBS Forum
76. 【Daily Question】 【AC Version for Static Equipment...Question 40】 February 9, 2019 – True/False Question...A Happy Family - HCBBS Forum
77. Application of plate-fin heat exchangers in coalbed methane at wellheads - HCBBS Forum
78. Provisions in GB50984 regarding the distance between VCEs, highly toxic substances, and areas where personnel are concentrated - HCBBS Forum
79. Fundamentals of Manufacturing Processes (Multiple Choice) 20181129 - HCBBS Forum
80. The water removal issue in the imidazoline synthesis process - HCBBS Forum
81. Liquid ammonia evaporation tank - HCBBS Forum
82. Regarding the issue of installing a safety valve behind a pressure relief valve - HCBBS Forum
83. Seek advice from the mentors and seniors in the field of chemical engineering! - HCBBS Forum
84. Spray cooling measures for hydrogen peroxide storage tanks - HCBBS Forum
85. How to recover the oil and gas at the top of tar tanks for heavy oil? - HCBBS Forum
86. How should small amounts of tar in wastewater be treated? ? ? - HCBBS Forum
87. The oilfield wastewater remains unflocculated and opaque after treatment - HCBBS Forum
88. Questions about straight threads - HCBBS Forum
89. What does the lightning bolt symbol on a block created in AUTOCAD PID mean? - HCBBS Forum
90. Why does the flow meter keep showing 0, even though it is confirmed that water is flowing through the pipe? - HCBBS Forum
91. What is the maximum winding distance for heat tracing copper tubes? - HCBBS Forum
92. Can a fire control cabinet control multiple systems? - HCBBS Forum
93. It’s 2019, and people’s views on the use of MIG welding on pressure vessels - HCBBS Forum
94. What should be the power supply load class for a sewage treatment facility? ? - HCBBS Forum
95. Prospects for Flue Gas Desulfurization and Denitration Technologies in Industrial Furnaces — An Introduction to the One-Step Desulfurization and Denitration Technology Using Urea Aqueous Solution - HCBBS Forum
96. 30T002-1998 Compressed Air Storage Tank Series - HCBBS Forum
97. Are there any recommendations for ASPEN training institutions? ? - HCBBS Forum
98. What is the highest vacuum level that can be achieved currently, 5 KPa? ! - HCBBS Forum
99. Atmospheric pressure storage tank rupture discs and emergency relief manholes - HCBBS Forum
100. Calculation of gravity backflow liquid seal height - HCBBS Forum