English — Forum #723 (Page 622/642)

1. Daily Question June 25, 2015 (Safe Communication): 3 Wealth points for replies, 5 Wealth points for correct answers; participation comes with rewards - HCBBS Forum
2. Searching for domestic medium-sized manufacturers that produce propylene - HCBBS Forum
3. 【Mechanical Section】Summary Post for Rewards of Posts Selected in the Voting for Outstanding Technical Posts in May 2015 - HCBBS Forum
4. When was the registration deadline for the 2015 Basic Chemical Engineering exam? - HCBBS Forum
5. SW6-2011 V2.0 various patches 1.0 2.0 - HCBBS Forum
6. Seeking help with variable frequency drives for high-voltage motors! - HCBBS Forum
7. The SC4 pipeline suffers from severe water hammer; how to deal with it? - HCBBS Forum
8. Actively controlled furnace door for coal charging in coke ovens - HCBBS Forum
9. 【Daily Question】Wastewater Knowledge-104 (June 19) (Answer +2, Correct Answer +4) - HCBBS Forum
10. Is flaw detection required for the elbow welds inside pressure vessel tanks? - HCBBS Forum
11. Can a floating-head heat exchanger isolate only the cooling medium without isolating the hot medium? - HCBBS Forum
12. What are the common power ratings for fans? - HCBBS Forum
13. Equipment Doctor: How to choose a magnetic stirrer for a reactor - HCBBS Forum
14. How to communicate with young employees born in the 1990s, and what aspects should be taken into consideration. - HCBBS Forum
15. Scanning time for analog valve programs in PLC programs - HCBBS Forum
16. Product Introduction to UE-PSI1.1 (PDMS and Stress Analysis Data Interface Program) - HCBBS Forum
17. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 76 - HCBBS Forum
18. Zhejiang University DCS temperature card issue - HCBBS Forum
19. 【Daily Question】June 25: Starting an axial flow pump (First 80 participants + 2 correct answers earn an additional 3–8 units of wealth) - HCBBS Forum
20. The opening ratio of the absorption tower is unreasonable - HCBBS Forum
21. Appendix A to HG/T 21574-2008 \"Technical Requirements for Lugs and Related Engineering in Chemical Equipment\" - HCBBS Forum
22. How to switch dual filters in a compressor system online - HCBBS Forum
23. I beg! I wonder if there are any third-party agencies in Urumqi, Xinjiang, that provide lubricant testing services? - HCBBS Forum
24. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 80 - HCBBS Forum
25. Question regarding the diameter of the heat exchanger - HCBBS Forum
26. High-value-added products downstream of acid gas in low-temperature methanol washing - HCBBS Forum
27. To what extent do steam temperature and pressure reduction, along with secondary steam recovery, improve the overall economic benefits? - HCBBS Forum
28. Which is the best check valve for pump outlets? - HCBBS Forum
29. An animation on the fault analysis of reciprocating compressors – small in size but rich in content; I’m not kidding you - HCBBS Forum
30. Discussion on the pressure difference control between the water in the space furnace burner and the gasification furnace? - HCBBS Forum
31. Let’s discuss how waste heat recovery works in our company - HCBBS Forum
32. What are you planning to do on the Dragon Boat Festival? - HCBBS Forum
33. Problems with instruments and power trunks under hydrogenation conditions - HCBBS Forum
34. What are the types of pipe racks and what does the pipe rack number mean? R FR - HCBBS Forum
35. Selection of manual butterfly valves - HCBBS Forum
36. In a molten salt furnace used for producing caustic soda by burning natural gas, what material is the natural gas burner made of? - HCBBS Forum
37. Daily Question June 24, 2015 (Safe Communication): 3 wealth points for replies, 5 wealth points for correct answers; participation comes with rewards - HCBBS Forum
38. Measuring the hardness, strength, and toughness of steel - HCBBS Forum
39. Does anyone have an electronic version of the test method ASTM D 6563 for analyzing benzene, toluene, and xylene concentrates by gas chromatography? - HCBBS Forum
40. 【Daily Question】June 23 – Issues related to the installation of rolling bearings (+2 for the first 80 participants; +3–8 extra points for correct answers...) - HCBBS Forum
41. Food topic 18: Is it better to use boiling water or cold water for cooking dumplings? - HCBBS Forum
42. Hydraulic testing of the pipeline - HCBBS Forum
43. Appreciation of couplets for the Dragon Boat Festival! - HCBBS Forum
44. The in-site message “Messages” cannot be exported - HCBBS Forum
45. I would like to ask what kind of valves are used for coal conveying and slag discharge in Luchie furnaces? - HCBBS Forum
46. Register for chemicals: Registration issues - HCBBS Forum
47. Safety valve bypass - HCBBS Forum
48. Ammonia-based desulfurization issues in coking plants - HCBBS Forum
49. Welding repairs are not allowed after heat treatment - HCBBS Forum
50. For intrinsically safe instruments, is a safety barrier also required for 485 communication? - HCBBS Forum
51. What are the current trends in the coal chemical industry? - HCBBS Forum
52. How to translate “Internal tower rates”? - HCBBS Forum
53. Is a fixed foam fire suppression system necessary for liquid sulfur storage tanks? - HCBBS Forum
54. Strive to be a good lubricant for the family! - HCBBS Forum
55. Instrument signal interference - HCBBS Forum
56. Filter - HCBBS Forum
57. Why the viscosity of a liquid basically does not change with pressure； - HCBBS Forum
58. Heat exchange area of tubular heat exchangers - HCBBS Forum
59. What is the effect of anhydrous sodium sulfite on resin towers and ion exchange membranes? - HCBBS Forum
60. Who are the persons in charge of work safety and the persons in charge of work safety management? - HCBBS Forum
61. Where do CO and CO2 in propylene come from? - HCBBS Forum
62. Does anyone have a video tutorial on Aspen heat exchanger network design? Could you share it with me? I need it urgently. . . . . . - HCBBS Forum
63. Continuous reforming oxygen analyzer - HCBBS Forum
64. “Classic quotes from Zhihu – after reading them, one will have a sudden realization! Do you know how to make it? - HCBBS Forum
65. Powder conveying - HCBBS Forum
66. External surface area of the elliptical head - HCBBS Forum
67. Question 59 from the Professional Knowledge exam in the morning, 2014 - HCBBS Forum
68. Everyone carries phones to work these days; how can we manage things so that they focus on their work while still being able to use their phones? - HCBBS Forum
69. Can cable trays be installed on the inside of the tank farm cofferdam? - HCBBS Forum
70. Differences between ultrasonic level gauges and radar level gauges - HCBBS Forum
71. Zeroing issue of differential pressure transmitters. - HCBBS Forum
72. Recruitment – Internal Operations – Distillation Tower - HCBBS Forum
73. It’s the first time I’ve encountered such a despicable foreign company - HCBBS Forum
74. Are there specific requirements for the pH value when using weak alkaline resins to treat water? - HCBBS Forum
75. Discussion on Question 6 of the 2011 Case Analysis - HCBBS Forum
76. [Father’s Day] What can I give you to show my love, my father - HCBBS Forum
77. What is TBA used for in the pre-sulfurization process of hydrocracking? - HCBBS Forum
78. Pipeline welding - HCBBS Forum
79. Float level controller on the pump seal - HCBBS Forum
80. What substances can sodium periodate oxidize? - HCBBS Forum
81. Automatic backwash filter – pipeline vibration issue~~~ - HCBBS Forum
82. Structure of centrifugal pumps - HCBBS Forum
83. Low-load hydrogen production operation - HCBBS Forum
84. Can a thermal mass flow meter measure natural gas? - HCBBS Forum
85. How to determine the position of the container nozzle - HCBBS Forum
86. The impact of taking the CAIC exam on current work - HCBBS Forum
87. Batch modifying text styles in CAD (disabled) - HCBBS Forum
88. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 227 - HCBBS Forum
89. Regarding the labeling and management of daily blind flanges: how should 8-character blind flanges be labeled, and is it necessary to use labels for them? - HCBBS Forum
90. One question per day: 6 wealth points for correct answers, 2 wealth points for participation, Question 222 - HCBBS Forum
91. Saturated vapor pressures of isobutane and tert-butanol at different pressures and compositions - HCBBS Forum
92. Torch system - HCBBS Forum
93. 【Weekly Topic】- Heilongjiang issues the largest fine in environmental protection history; Huaneng Heating fined 2 million - HCBBS Forum
94. Looking for Tianzheng encryption software? - HCBBS Forum
95. Four of the world’s five major oil companies (Big Oil) have announced their withdrawal from renewable energy - HCBBS Forum
96. For a storage tank filled with crude oil, what is the best solution to oil leakage from the agitator flange? - HCBBS Forum
97. Flange gaskets resistant to formic acid, acetic acid, and propionic acid - HCBBS Forum
98. Excessively high exhaust pressure in steam turbines mainly affects those devices - HCBBS Forum
99. 【Daily Question】2015.06.20 Stress corrosion environment (2 wealth points for a reply + 3–8 additional wealth points for a correct answer) - HCBBS Forum
100. How to translate “piece-meal”? - HCBBS Forum