English — Forum #723 (Page 436/642)

1. Data review - HCBBS Forum
2. Which foreign technology was used as a reference for the process technology of the space furnace? (Is it Texaco, Shell, Siemens...? ） - HCBBS Forum
3. Requirements for the installation of vent flares and vent chimneys - HCBBS Forum
4. Part 7 of the University Debate Series: Nowadays, it’s common to see various celebrities attending university directly. What’s your opinion on this! - HCBBS Forum
5. Knowledge about heat exchangers - HCBBS Forum
6. Pressure transmitter switching issue - HCBBS Forum
7. Centrifugal Compressor Surge Flowrate - HCBBS Forum
8. Regarding the issue of installing combustible gas alarms for materials not classified as Category A or B under special circumstances - HCBBS Forum
9. Unveiling the unspoken rules of construction sites! (I saw it written by someone else online; it’s quite good, so I’m sharing it.) - HCBBS Forum
10. Could there be safety issues if air gets into the bearing housing? - HCBBS Forum
11. I have some resources from design firms; there are manufacturers that produce valves, instruments, and pumps – you can contact me - HCBBS Forum
12. Calculation of the exhaust flow rate of screw compressors - HCBBS Forum
13. November 29, Question 105 on Boiler Foundations: (A certain score will be given to the top 50) - HCBBS Forum
14. The ridiculous money-driven football - HCBBS Forum
15. Questions about oil mist separators - HCBBS Forum
16. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 374 - HCBBS Forum
17. Centrifugal pumps and canned pumps - HCBBS Forum
18. 【Picture of the Day】11.30 Take a look – what device is shown in this picture? - HCBBS Forum
19. Heat calculation for closed-loop heating systems - HCBBS Forum
20. 【Weekly Topic】Everyone~ It’s getting cold~ - HCBBS Forum
21. There are no luck points for posting and replying in the technical exchange area - HCBBS Forum
22. Is it necessary to use a cone-bottomed tank for the oxidation tank after the alkaline flue gas desulfurization wastewater clarifier? - HCBBS Forum
23. 【Weekly Question】+9 for correct answers, +2 for participation； Close this post on Sunday - HCBBS Forum
24. 4-20mA and grounding of the instrument - HCBBS Forum
25. 【MTBE】How to handle defective products when MTBE production starts - HCBBS Forum
26. Is a setup fee charged for industrial steam, and what are the standards? - HCBBS Forum
27. How to purge the system pipelines of a dry gas hydrogen production unit before commissioning? Can it be purged using blasting? - HCBBS Forum
28. How many people are left? Has it turned yellow? - HCBBS Forum
29. What are the requirements for the inner surfaces of sanitary-grade equipment? - HCBBS Forum
30. The issue of co-authors on papers - HCBBS Forum
31. 【Daily Question】11.27 True or False Question - HCBBS Forum
32. Is burner atomization achieved through pressure difference or flow velocity? - HCBBS Forum
33. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 375 - HCBBS Forum
34. Automatic packaging machine for pigment solid powder - HCBBS Forum
35. Problems with gas blowers - HCBBS Forum
36. 【Daily Question】Question from Issue 20151127 - HCBBS Forum
37. Does the biofilm process not require sludge removal? What on earth is a hydrolysis acidification tank? - HCBBS Forum
38. I have a butterfly valve that is similar to the D371X, except it’s eccentric – what is its model number? It would be best to have images - HCBBS Forum
39. How to perform alignment calculations when the coupling diameter and the distance between the motor’s front and rear feet are unknown - HCBBS Forum
40. Experiences from working in a security role for 3 years. . These days - HCBBS Forum
41. Is it necessary to add alkali when treating dye factory wastewater with ferrous sulfate? - HCBBS Forum
42. MTO unit mixer manufacturers - HCBBS Forum
43. How to use it when the tower wall thickness is reduced? - HCBBS Forum
44. Vaporization - HCBBS Forum
45. See how I improved my spoken and listening English! - HCBBS Forum
46. Environmental Protection Daily Quiz: Participate on 11/30 for a prize; 3 correct answers earn an additional prize - HCBBS Forum
47. Civil Engineering Structure Discussion Area ----【Daily Question】Question from Issue 20151204 - HCBBS Forum
48. The lubricating oil has turned white - HCBBS Forum
49. Material selection for pressure resistance in stainless steel tanks - HCBBS Forum
50. Detection of hydrogen sulfide content in rich and poor MDEA solutions - HCBBS Forum
51. Issue of the gas holder rising speed - HCBBS Forum
52. 【Daily Question】 November 27th: For a catalytic cracking unit, what is often the key factor that determines its processing capacity? - HCBBS Forum
53. I’m a newcomer to this industry and would like some advice on choosing medium-pressure pumps. I hope those with more experience will be kind enough to share their insights - HCBBS Forum
54. Regarding the discharge volume of the heat exchanger safety valve - HCBBS Forum
55. The impact of adding or removing impellers on multi-stage pumps - HCBBS Forum
56. Who knows why the switching time for PC-grade dual-power switching has to be less than 5ms - HCBBS Forum
57. Oxygen intake procedure - HCBBS Forum
58. How should salts, acids, thiols, and phenols in petrochemical wastewater be treated? - HCBBS Forum
59. The problems of phenol-containing wastewater - HCBBS Forum
60. Joint Study*1201: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
61. On purging and displacement during industrial pipeline maintenance - HCBBS Forum
62. 【Daily Question】Chemical Engineering Principles 252: Relative Volatility (December 3) - HCBBS Forum
63. November 24th, Boiler Foundation Question 99: (A certain score will be given to the top 50) - HCBBS Forum
64. 【Daily Question No. 36】November 30, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
65. How is the cathode level balance in an ion-exchange membrane cell calculated? Including some of the water vapor carried away by hydrogen. - HCBBS Forum
66. Seek \"Specifications for the Engineering Design of Programmable Controller Systems\"” - HCBBS Forum
67. Process design of pressure relief valves - HCBBS Forum
68. 【Daily Question】 December 4th: When aluminum wires are used for the grounding wires of electrical equipment in installations, what should be the minimum cross-sectional area of such wires? ? - HCBBS Forum
69. Gauge pressure meters fall under the category of devices subject to mandatory inspection, but is there a defined range for such inspections? - HCBBS Forum
70. Compressor interlock value - HCBBS Forum
71. Regarding ultra-fine grinders - HCBBS Forum
72. The COD level of the reclaimed water is around 70 mg; the impact of this on turbidity after it is added to the circulating water - HCBBS Forum
73. What requirements should be put forward for the procurement of welding materials for pressure vessels? - HCBBS Forum
74. Explosion at Putian Chemical Plant - HCBBS Forum
75. 【Daily Question No. 35】November 27, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
76. After A/O treatment, COD does not decrease but increases instead - HCBBS Forum
77. Find out why, for high-temperature heat treatment processes, the higher the operating temperature, the greater the load on the heating furnace - HCBBS Forum
78. Are there any recommended domestic PH/ORP online monitoring devices? - HCBBS Forum
79. What are the modules of equipment reliability? - HCBBS Forum
80. The double-flange level gauge is inaccurate - HCBBS Forum
81. Regarding the high levels of bromide ions in wastewater - HCBBS Forum
82. Who has any books on the loading of liquefied hydrocarbons? Please recommend some - HCBBS Forum
83. What are the characteristics of FDI-type burners? - HCBBS Forum
84. Emerson mass flow meter instructions - HCBBS Forum
85. Problems with the check valve at the outlet of the centrifugal compressor - HCBBS Forum
86. On the volumetric load of the A/O process - HCBBS Forum
87. Request for commissioning plan for medium-pressure nitrogen compressor (motor) - HCBBS Forum
88. Alkylation acid - HCBBS Forum
89. 【Popular Science Tips on Polymers and Materials】--Basic Knowledge for Choosing 40 Resins + Chemical Engineer Yuepeng - HCBBS Forum
90. Discussion on equipment management methods - HCBBS Forum
91. Light gasoline etherification reactor - HCBBS Forum
92. Delayed coking rich gas compressor - HCBBS Forum
93. What should be considered when starting a high-pressure pump? How to understand this? - HCBBS Forum
94. How is Sichuan Shengma Chemical? - HCBBS Forum
95. Problems with the installation of pneumatic ball valves - HCBBS Forum
96. Basic and specialized books on learning* equipment - HCBBS Forum
97. Problems with centrifugal pump disc pumps - HCBBS Forum
98. What are the types of supports for horizontal containers? - HCBBS Forum
99. 【Daily Question】Question from Issue 20151202 - HCBBS Forum
100. How can we solve the problem that PE film does not stick to the knife when packaging fabric on a heat sealer? - HCBBS Forum