English — Forum #723 (Page 222/642)

1. How do you classify and grade alarms in DCS systems? Those with proven experience are welcome to share it - HCBBS Forum
2. For domestic DCS manufacturers, how many points is the optimal number that can be accommodated by one control station? - HCBBS Forum
3. How should the ground inside the cofferdam, as well as drainage ditches and their surfaces, be protected against corrosion using 30% hydrogen peroxide? - HCBBS Forum
4. Search: Intermediate Engineer, professional qualification certificate - HCBBS Forum
5. How to reduce COD and color in concentrated acid wastewater - HCBBS Forum
6. What types of gas are used for modifying cars? - HCBBS Forum
7. Flash calculation - HCBBS Forum
8. I have a question regarding catalysis; I would appreciate it if the teachers could help me answer it - HCBBS Forum
9. What instrument is used for accurate analysis of arsenic content? - HCBBS Forum
10. Question about the design pressure of the pipeline! ! ! ! ! ! ! ! - HCBBS Forum
11. Problems with the feeding plate in the rotary kiln? - HCBBS Forum
12. Communication - HCBBS Forum
13. Valve **Standard Search – GB Standards - HCBBS Forum
14. Is the design of water supply and drainage pipes, gas pipelines, and process pipes well-coordinated? To which specialty does the design of acetylene pipes fall under? - HCBBS Forum
15. Is the Shahuo Oil Depot in Beijing owned by CNPC or Sinopec? - HCBBS Forum
16. Urgently address the leakage issue with the large and small valves for torch ignition - HCBBS Forum
17. Safety Technology Exchange Edition: Daily Question (2016.6.28) - HCBBS Forum
18. What material should be used for storage tanks of gutter oil/acidified oil? - HCBBS Forum
19. How should I handle this conversation - HCBBS Forum
20. 【Daily Safety Reminder】June 26 is coming earlier! - HCBBS Forum
21. What is the appropriate distance for the thermometer thread from the gauge head? - HCBBS Forum
22. Transactions were generally modest, with the PVC market showing weak upward momentum - HCBBS Forum
23. What is the difference between auxiliary materials and spare parts for rotating equipment maintenance? - HCBBS Forum
24. 【Learn Ethylene Together】Five questions per day to easily learn about ethylene 53 - HCBBS Forum
25. Can the slag treatment and heat recovery units of the Texaco process be arranged as a combined unit? - HCBBS Forum
26. Are eccentric butterfly valves single-direction or double-direction? - HCBBS Forum
27. 【Weekly Topic】【HVAC Version 20160624】 - HCBBS Forum
28. 【Weekly Topic】【Storage & Transportation Version 20160622】 - HCBBS Forum
29. Where can I buy the registered chemical engineering exam books (association edition)? - HCBBS Forum
30. For the pressure adjustment of the multi-stage pump seal flushing 53B, should the pressure of the balance tube be used as a reference, or the pressure of the seal flushing oil according to Plan 32? - HCBBS Forum
31. Safety Technology Exchange Edition: Daily Question (2016.6.27) - HCBBS Forum
32. Atmospheric safety valve! - HCBBS Forum
33. Safety Technology Exchange Edition: Daily Question (2016.6.26) - HCBBS Forum
34. Occupational Health Daily Question 6.26: Participate for a prize; 3 correct answers and another prize will be given - HCBBS Forum
35. Frequency of valve use in different industries - HCBBS Forum
36. Differences between European, American, and Japanese electrical products - HCBBS Forum
37. 【Daily Question】Chemical Engineering Principles 390: Strong Alkali Anion Exchangers (June 21) - HCBBS Forum
38. Can sulfur dioxide gas cylinders be directly heated with steam? - HCBBS Forum
39. Is there a way to use solid acids instead of sulfuric acid to catalyze the production of 1,4-dioxane? - HCBBS Forum
40. 【Weekly Topic】【Engineering Version 20160629】 - HCBBS Forum
41. baffle plate - HCBBS Forum
42. D20 - HCBBS Forum
43. Experts, during inspection it was found that water has entered inside the lamp cover of the pump’s indicator light. Is this normal? - HCBBS Forum
44. What does the cleaning coefficient refer to in the design of heat exchangers? - HCBBS Forum
45. 1,3-Dichloropropanol production process - HCBBS Forum
46. Safety Technology Exchange Edition: Daily Question (2016.6.23) - HCBBS Forum
47. Is the safety barrier connected to those devices? - HCBBS Forum
48. "15th China International Equipment Manufacturing Expo and China National Defense Science and Technology Industry Expo " - HCBBS Forum
49. Areas that need improvement in the oil filter machine - HCBBS Forum
50. Doubts regarding the repair approach for the bottom ring plate of large storage tanks based on API653 - HCBBS Forum
51. What impact did the launch of carbon emission trading in 2017 have on the coal chemical industry? - HCBBS Forum
52. Coke tower shaking - HCBBS Forum
53. Question regarding the scope of application of JB4732 - HCBBS Forum
54. Why are copper nozzles used for hydrogen sampling in hydrogen production? - HCBBS Forum
55. Can methanol storage tanks in a pharmaceutical factory be placed inside a building? ? ? - HCBBS Forum
56. Selection of diaphragm for differential pressure transmitter in 60% concentration NaOH solution - HCBBS Forum
57. 【Daily Topic】【Civil Engineering Version 20160701】 - HCBBS Forum
58. 【Daily Judgment NO.50】June 29, 2016 - HCBBS Forum
59. How can solid acids be used to replace sulfuric acid in the catalytic production of ether - HCBBS Forum
60. Steam system - HCBBS Forum
61. Incentivized survey on occupational health work conditions - HCBBS Forum
62. Analyze polyglycerol in glycerin? - HCBBS Forum
63. Results of occupational health examination - HCBBS Forum
64. Seeking advice on the calculation of sludge age! - HCBBS Forum
65. Should the backpressure valve be installed near the outlet of the metering pump, or further away from the metering pump and closer to the injection point? - HCBBS Forum
66. 8.0MPa Texaco water-coal slurry gasifier process - HCBBS Forum
67. What is the maximum allowable temperature for a chain grate? - HCBBS Forum
68. Lab Technician Reader Video - HCBBS Forum
69. Deaerator and carbon dioxide remover - HCBBS Forum
70. Welded insulated gas cylinders, vehicle-mounted liquefied natural gas cylinders - HCBBS Forum
71. 【Weekly Topic】【Quality Version 20160629】 - HCBBS Forum
72. 【Weekly Topic】【Electrical Edition 20160621】 - HCBBS Forum
73. Development trends of domestic stainless steel sintered filter elements - HCBBS Forum
74. 【Daily Topic】【Production Version 20160623】 - HCBBS Forum
75. How will DeAntoni use Zhou Qi? - HCBBS Forum
76. The SW6 3.0 network version is very slow every time it’s opened, and it also crashes easily. How can this be fixed? - HCBBS Forum
77. This year’s playoff rule-----let the opponent take the match point first, then catch up, and then turn the situation around! - HCBBS Forum
78. (Translation) My Clash with Foreigners’ Safety Mindsets” - HCBBS Forum
79. What causes the increase in pH value inside the UASB tank? - HCBBS Forum
80. Solved - HCBBS Forum
81. Weekly Topic: FAQs on Centrifugal Compressors? Please participate! 2016.06.26--07.03 - HCBBS Forum
82. How to configure a saturated solution - HCBBS Forum
83. Preparation of 1,3-dichloro-2-propanol by the glycerol method - HCBBS Forum
84. Everyone talk about the brand of their first computer - HCBBS Forum
85. Seeking purchase of ion-exchange membrane caustic soda production equipment - HCBBS Forum
86. Is anyone interested in successful cases of online monitoring in the chemical industry? - HCBBS Forum
87. For low-temperature steel, is it necessary to conduct a hardness test after heat treatment? - HCBBS Forum
88. 【Picture of the Day】2016 06 30 What is the device in this picture? - HCBBS Forum
89. Problem of the low-frequency standby pump for the liquid oxygen pump - HCBBS Forum
90. Selection of heat exchanger coefficients - HCBBS Forum
91. Advantages and disadvantages of older women - HCBBS Forum
92. 【Daily Question No. 152】June 21, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
93. The current Rosemount gas flow meter range is 0-1.612 Kpa, with a capacity of 80,000 - HCBBS Forum
94. Calculation method for the dosage of trisodium phosphate in boiler water - HCBBS Forum
95. Top 10 Tips for Summer Occupational Health and Safety” - HCBBS Forum
96. Let’s talk about everyone’s phone plans It seems that having a connection is too expensive…… - HCBBS Forum
97. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； June 30 - HCBBS Forum
98. What are the reasons for tube rupture in molecular sieve electric heaters? - HCBBS Forum
99. Mechanical seal cooler - HCBBS Forum
100. Why must the tube sheet of a vacuum distillation reboiler be above the normal liquid level in the reactor bottom? - HCBBS Forum