English — Forum #723 (Page 573/642)

1. What are the current mainstream anti-corrosion coatings for standard components? - HCBBS Forum
2. 【Daily Question】 July 30: The more stages a pump has, what happens to its flow rate? ? - HCBBS Forum
3. How to convert 1 NM3/h to Kg/h - HCBBS Forum
4. What is the level of compensation for instrument technicians across the country? Does the dry instrument industry really have a promising future? - HCBBS Forum
5. [Technical Exchange Post] [Daily Question] Principles of Chemical Engineering 129: Saturated Steam and Superheated Steam (August 2) - HCBBS Forum
6. Investigation and statistics on high-efficiency trays in urea synthesis towers - HCBBS Forum
7. Pipeline corrosion issue - HCBBS Forum
8. With newly installed units, the mechanical seals of the pumps always have problems, with some experiencing severe leakage. Most of them are PLAN52; what should I do? - HCBBS Forum
9. The Inspiration of the Night-blooming Cactus - HCBBS Forum
10. Let’s talk about the trips organized by our company - HCBBS Forum
11. Have the security and environmental protection departments in your organization met? - HCBBS Forum
12. Lubricating oil for coal mill bearing shells - HCBBS Forum
13. The energy contained in liquid oxygen and liquid nitrogen - HCBBS Forum
14. What is the allowable stress for ductile iron qt450? - HCBBS Forum
15. Purge conditions in equipment design - HCBBS Forum
16. The hydrogen gas tightness has been achieved at 80 kilograms, but small sand holes were found in the welds. Do any of you have experience with this issue? How can it be resolved? Thank you - HCBBS Forum
17. 【Daily Question】Question from Issue 20150803 - HCBBS Forum
18. Does chemical engineering only require the study of equilibrium equations? - HCBBS Forum
19. Weekly topic: 8 wealth points for those who answer correctly, 2 wealth points for participation； Question 124 - HCBBS Forum
20. Can a centrifugal compressor run idle for a long time? - HCBBS Forum
21. Weekly Topic: Management of burners after maintenance - HCBBS Forum
22. Calculation of the air discharge volume for PSA - HCBBS Forum
23. The oil content in natural gas is 10 ppm; what is the equivalent value in milligrams per cubic meter? How is it calculated? - HCBBS Forum
24. Coking inhibitors and sulfur reduction additives - HCBBS Forum
25. Should the split-flow method be used when the hydrogen sulfide content in acidic gases is between 15% and 50%? What are the advantages and disadvantages of this method? - HCBBS Forum
26. Special thread for a summary of one question per day from the regional environmental impact assessment section, available in June/July - HCBBS Forum
27. Applications of ceramsite in water treatment and alternative products - HCBBS Forum
28. Regarding the issue of head thickness. - HCBBS Forum
29. Requirements for inspection reports - HCBBS Forum
30. 【Daily Question】2015.08.08 Non-destructive testing of steel materials prone to delayed cracking (2 wealth points for a reply; +3–8 wealth points if the answer is correct) - HCBBS Forum
31. Is it necessary to install a check valve at the outlet of the submersible pump? - HCBBS Forum
32. What is the typical pressure resistance of insulation jacketing? - HCBBS Forum
33. Technology transfer for glyphosate-specific additives - HCBBS Forum
34. Environmental emergency response plan - HCBBS Forum
35. 【Daily Question】Chemical Engineering Principles 134: Water Removal (August 8) - HCBBS Forum
36. 【Daily Question】Question from Issue 20150805 - HCBBS Forum
37. I’ll do one question per day too, 2015.7.29 - HCBBS Forum
38. Questions regarding the normally open setting of the backup pump outlet valve with automatic pump start-up - HCBBS Forum
39. What factors should be considered when reducing the impeller of a multistage pump? - HCBBS Forum
40. Who has drawings of a 1200 square meter heat network heater? - HCBBS Forum
41. Help, does anyone know the model of this valve? - HCBBS Forum
42. I have a question regarding the safety design of oil depots - HCBBS Forum
43. Extraction of anion ions from low-temperature methanol washing process - HCBBS Forum
44. How beginners can learn *chemical engineering design - HCBBS Forum
45. Honeywell safety management video materials - HCBBS Forum
46. TSA or PSA - HCBBS Forum
47. Bidirectional diode, bidirectional thyristor speed control – unstable motor speed - HCBBS Forum
48. What is TTLY? - HCBBS Forum
49. What conditions are required for two chemical manufacturing companies to share a fire protection water system? - HCBBS Forum
50. Agilent gas chromatography - HCBBS Forum
51. 【Daily Question】August 6: When a thermocouple or compensation wire is short-circuited, what is the approximate reading on the display instrument? - HCBBS Forum
52. HART communicator 275/375 for field instrument loop test - HCBBS Forum
53. 【Daily Question】Question from Issue 20150731 - HCBBS Forum
54. Reasons for the appearance of sulfur ash - HCBBS Forum
55. 【Daily Question】Question from Issue 20150803 - HCBBS Forum
56. Who has the regulations for the operation of pumps and machinery in hot summer weather? - HCBBS Forum
57. In the liquefied gas analysis parameters, what do NC4-1, IC4-1, trans-C4-2, and cis-C4-2 represent respectively? - HCBBS Forum
58. Advantages and disadvantages of Zhejiang University’s ECS700 and Hilscher’s K series - HCBBS Forum
59. Is the natural gas used in western Guangdong sourced from the Middle East? - HCBBS Forum
60. Find the latest ion-exchange membrane caustic soda projects launched since 2014 - HCBBS Forum
61. Beijing wins the right to host the Winter Olympics; energy-saving and environmental protection companies see an opportunity for profit - HCBBS Forum
62. Wastewater treatment - HCBBS Forum
63. Who has any free PDMS software? Please share it - HCBBS Forum
64. Issues regarding the installation of SIS - HCBBS Forum
65. What materials have a tendency to undergo cold work hardening? (Rule 151 stipulates that for heat exchange tubes and tube sheets with such a tendency, flexible expansion methods should be used...) - HCBBS Forum
66. temperature enabler - HCBBS Forum
67. File call between HTRI6.0 and PRO/II9.3 - HCBBS Forum
68. 　CNOOC Petrochemical (Yingkou) Co., Ltd - HCBBS Forum
69. CO2 removal by Mdea method - HCBBS Forum
70. If the outlet of the reciprocating compressor is not opened... - HCBBS Forum
71. 【Daily Question】Question from Issue 20150803 - HCBBS Forum
72. The ammonia nitrogen levels detected online in wastewater are more than twice as high as those obtained through manual analysis; why is the manual analysis giving higher values? - HCBBS Forum
73. Differential pressure flow meter indication - HCBBS Forum
74. Who has the paper titled “Comparative Experimental Studies on the Material Properties for Preventing Corrosion in Reboilers”? - HCBBS Forum
75. Liquefied hydrocarbon pumps are installed beneath the outer utility corridor; what are the specific design requirements? - HCBBS Forum
76. Diesel recovery issues with screw compressors - HCBBS Forum
77. Notice from the General Office of the Ministry of Human Resources and Social Security on Adjusting the Dates for Qualification Exams such as those for Price Appraisers [07-31] - HCBBS Forum
78. Uses of methacraldehyde - HCBBS Forum
79. Technical Discussion: Compaction of Backfill Soil - HCBBS Forum
80. Standard Operating Procedure Template - HCBBS Forum
81. Weekly topic: 8 wealth points for those who answer correctly, 2 wealth points for participation； Question 125 - HCBBS Forum
82. Where is the sensor located in the E+H Vortex Flowmeter 72 series? It’s not specified in the manual - HCBBS Forum
83. Seeking help with a question regarding chimneys - HCBBS Forum
84. I’ve become a full-time employee now; time to spend some money - HCBBS Forum
85. May weld gussets be added to the container shell after the hydrostatic test?/ - HCBBS Forum
86. How to protect equipment during the rainy season - HCBBS Forum
87. SHANCHU - HCBBS Forum
88. Stepless control of reciprocating compressors - HCBBS Forum
89. 【Daily Question】 August 12th: What should be the control range for the preheating rate of a hot oil pump during the preheating process? - HCBBS Forum
90. Sensitivity experiment of gas chromatograph - HCBBS Forum
91. A question on boilers will be asked; those in the top 30 will receive a certain score - HCBBS Forum
92. Comparison of the gas-liquid separation performance of mesh defoamers and filter elements - HCBBS Forum
93. Does heating a liquid until it evaporates into a vapor-liquid mixture generate vibrations? - HCBBS Forum
94. Analysis of the sulfate market trend in July 2015 - HCBBS Forum
95. Selection of heat transfer medium for the temperature gauge sleeve in the reaction kettle - HCBBS Forum
96. What is the normal frequency for testing and analyzing drum water, and what are the appropriate analysis methods? - HCBBS Forum
97. Who can crack the golden egg? - HCBBS Forum
98. How to perform heat treatment after on-site pipeline welding - HCBBS Forum
99. Regarding the feed temperature of the distillation tower - HCBBS Forum
100. Operating temperature of the outer wall of low-voltage motors - HCBBS Forum