English — Forum #337 (Page 80/163)

1. [Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 05–15] - HCBBS Forum
2. I’m a beginner, just graduated. I plan to work at a chemical engineering design institute. I would like to ask Yi Xia what exactly is involved in process design there; I’m looking for more specific information as well as an understanding of how it connects to what was learned in undergraduate studies. - HCBBS Forum
3. I would like to ask based on practical experience: can pump cavitation cause the material inside to leak? - HCBBS Forum
4. Fire protection codes for terminal treatment plants for associated gas - HCBBS Forum
5. Does anyone know how to do Aspen simulations? Could you please teach me how to model a 35,000-ton chlorobenzene separation unit? - HCBBS Forum
6. [Daily Question] Basic Process Knowledge (True/False Questions) 20190618 - HCBBS Forum
7. Find the formula for calculating the density change of liquid propane at different temperature changes - HCBBS Forum
8. What is the calcium carbide power gas generation rate? - HCBBS Forum
9. I would like to ask if there are any models with a flow rate of 120 cubic meters per hour, an inlet pressure of 3 MPa, an outlet pressure of 9 MPa, and a transport medium of light oil at room temperature... - HCBBS Forum
10. These tips are effective for judging the quality of carbon additives! - HCBBS Forum
11. [Daily Question] Basic Process Knowledge (True/False Questions) 20190827 - HCBBS Forum
12. What are the characteristics of ferrosilicoaluminum used in steelmaking? Why is ferrosilicoaluminum used in steelmaking? - HCBBS Forum
13. Let’s discuss whether cost considerations need to be taken into account when designing process piping - HCBBS Forum
14. Is a DN40 methanol pipeline considered a pressure pipeline? - HCBBS Forum
15. Regarding the head design, and what standard is used for the equipment’s length-to-diameter ratio? - HCBBS Forum
16. Methanol storage tanks are sealed with nitrogen, but safety valves must also be installed in case of abnormal operating conditions; so the question is - HCBBS Forum
17. Could you please tell me the fire hazard categories for several types of hazardous waste? - HCBBS Forum
18. Is static grounding required for the alkaline solution during unloading? - HCBBS Forum
19. For PH2-3, which mainly contains sodium sulfate and sulfuric acid an, what material should be used? - HCBBS Forum
20. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191020 - HCBBS Forum
21. Weird ground wire - HCBBS Forum
22. Centrifugal compressor oil analysis - HCBBS Forum
23. Pressure exerted on atmospheric pressure storage tanks - HCBBS Forum
24. Regarding the nature and category of the standard with the number SPMP-STD-XXXX - HCBBS Forum
25. Is it necessary to use baffles with the movable mixer in IBC tanks? Are baffle plates only needed for cylindrical containers? - HCBBS Forum
26. How to utilize 160-degree hot air (with about 40% moisture)? Can it be used to heat heat transfer oil? - HCBBS Forum
27. How to determine whether the water in crude oil and natural gas is free water or bound water? - HCBBS Forum
28. How to identify A/B for two pumps? - HCBBS Forum
29. How is the operating rate of equipment in intermittent production determined? - HCBBS Forum
30. [Daily Question] Basic Process Knowledge (True/False Questions) 20190619 - HCBBS Forum
31. Can high-pressure liquid be directly introduced into a tank at normal pressure? - HCBBS Forum
32. [Daily Question] Basic Process Knowledge (True/False Questions) 20190701 - HCBBS Forum
33. -Are pipes at 15℃, 0.4MPa, DN250 and DN40 considered pressure pipelines? Is it necessary to submit for inspection? - HCBBS Forum
34. Why is boiling occurs when the saturated vapor pressure equals the external air pressure? - HCBBS Forum
35. Chemical Process Design Manual - HCBBS Forum
36. [Daily Question] Basic Process Knowledge (True/False Questions) 20190628 - HCBBS Forum
37. Condensate enters the steam flash tank – how is the design pressure of the flash tank determined? - HCBBS Forum
38. [Daily Question] Basic Process Knowledge (True/False Questions) 20190811 - HCBBS Forum
39. I have an engineering question for everyone; I hope you can patiently answer it. - HCBBS Forum
40. Calculation of flue gas condensation water volume - HCBBS Forum
41. [Process Engineering Division – Chemical Components Forum – Daily Question – Questions 05-08] - HCBBS Forum
42. How to detect enamel cracking in enamel-coated equipment? - HCBBS Forum
43. What is the standard regarding not allowing pipe openings at the lower part of the spherical tank? ? ? - HCBBS Forum
44. Where can I obtain meteorological data for the site of a park project construction? - HCBBS Forum
45. Circulating water regulation - HCBBS Forum
46. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191013 - HCBBS Forum
47. [Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 05-07] - HCBBS Forum
48. 【Daily Question】 【AC Version for Static Equipment...Question 121】 May 1, 2019 Revised multiple-choice question... Happy Labor Day - HCBBS Forum
49. How to prevent the oxidation of ferrous ions in ferrous sulfate solution? - HCBBS Forum
50. Do hydrogen peroxide storage tanks need a nitrogen seal and a vent valve? - HCBBS Forum
51. How can concentrated sodium hydroxide solution be used for recrystallization to obtain anhydrous sodium hydroxide? - HCBBS Forum
52. Safety - HCBBS Forum
53. Can flat-weld flanges be used for high-pressure pipelines? - HCBBS Forum
54. [Help] - HCBBS Forum
55. [Daily Question] Basic Process Knowledge (True/False Questions) 20190725 - HCBBS Forum
56. [Daily Question] Basic Process Knowledge (True/False Questions) 20190519 - HCBBS Forum
57. Flue gas particulates after alkaline washing of sulfur - HCBBS Forum
58. Naphtha hydrogenation process: raw oil mixing; feed rate cannot be increased - HCBBS Forum
59. Does the acyl chlorination reaction belong to the chlorination process? - HCBBS Forum
60. Changes in air pressure - HCBBS Forum
61. Sanitary-grade clamp iso2852 - HCBBS Forum
62. New classification of industrial pipeline grades - HCBBS Forum
63. Chlorine compression coefficient - HCBBS Forum
64. May I ask what information needs to be clarified when preparing a proposal and quote for a project in order to provide an accurate quote? Try to be as comprehensive as possible - HCBBS Forum
65. There are many pneumatic valves available; what are the advantages and disadvantages of creating an solenoid valve box for controlling the operation of a pneumatic valve? - HCBBS Forum
66. [Daily Question] Basic Process Knowledge (True/False Questions) 20190630 - HCBBS Forum
67. Regarding the Jingwei Fine Chemicals accident, some say it was caused by static electricity in non-metallic pipes. What’s your opinion? - HCBBS Forum
68. Which has better profitability and prospects, and is more suitable for young people to develop in: Zhenhai Petrochemical Engineering Company or Shandong 3D Petrochemical? - HCBBS Forum
69. [Daily Question] Basic Process Knowledge (True/False Questions) 20190514 - HCBBS Forum
70. Determination of the side exhaust hood dimensions - HCBBS Forum
71. Feasibility discussion on operating the device at 10%-20% load for extended periods - HCBBS Forum
72. [Daily Question] Basic Process Knowledge (True/False) 20190805 - HCBBS Forum
73. [Daily Question] Basic Process Knowledge (True/False) 20190708 - HCBBS Forum
74. How to determine the outlet pressure of an air compressor? Seeking advice from experts - HCBBS Forum
75. Is there a future in thermal engineering design? - HCBBS Forum
76. Discussion on the vacuum filtration speed _ Shen Zonglin - HCBBS Forum
77. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190908 - HCBBS Forum
78. A clichéd question: the dike around the liquid caustic storage tank - HCBBS Forum
79. The issue of negative pressure resistance in steel-lined pipes - HCBBS Forum
80. I would like to ask whether it is necessary to discharge static electricity from dump trucks carrying non-flammable materials in explosion-proof areas - HCBBS Forum
81. The reaction of sodium with water to produce hydrogen is a direction in the efforts to obtain hydrogen energy - HCBBS Forum
82. For a 35-ton double-bed sulfurization bed boiler, how can denitration using SNCR be achieved to keep nitrogen oxide levels below 50 mg? Please provide solutions - HCBBS Forum
83. Dear teachers, where can I conduct tests on intergranular corrosion of steel? - HCBBS Forum
84. May the exhaust gas from concentrated sulfuric acid storage tanks be released directly into the atmosphere? How does your factory do it? - HCBBS Forum
85. For stainless steel tanks, when dissolution and crystallization are carried out using hot alkali, will alkali embrittlement occur? - HCBBS Forum
86. Discussion on the Announcement by the State Administration for Market Regulation regarding Administrative Licenses for Special Equipment (No. 3, 2019) - HCBBS Forum
87. I need help regarding the issue of throttling to reduce pressure. - HCBBS Forum
88. Dingtongoxime wastewater stripping process - HCBBS Forum
89. Do high-risk processes in atmospheric-pressure reactions require safety valves? - HCBBS Forum
90. [Daily Question] Basic Process Knowledge (True/False) 20190503 - HCBBS Forum
91. Saturated vapor pressure of the mixture - HCBBS Forum
92. Is it feasible to produce hydrogen by reacting sodium with water? - HCBBS Forum
93. Where can I find the standard enthalpy of formation for chemical reactions? - HCBBS Forum
94. How is the maximum amount of utility in process design determined? - HCBBS Forum
95. High price offered for the mature production processes of di-tert-butyl dicarbonate and aspartic acid - HCBBS Forum
96. In general oil refining design institutes, what is the ranking of the thermal engineering discipline in terms of importance? - HCBBS Forum
97. Safety valves installed in liquid pipelines due to thermal expansion - HCBBS Forum
98. Looking for materials that can withstand acetone as well as rubber materials - HCBBS Forum
99. Questions regarding mixers - HCBBS Forum
100. May I ask what is the function and control of the exhaust valve on the backwash air pipe of a V-type filter? - HCBBS Forum