English — Forum #723 (Page 419/642)

1. Why do some BiTAC electrolyzers use brackish water while others don’t? Why is that? - HCBBS Forum
2. Which domestic online analytical instruments offer better quality? - HCBBS Forum
3. How many types of gas pipeline leakage detection techniques do you know? - HCBBS Forum
4. Common methods for blackening stainless steel, treatment effects, and process steps - HCBBS Forum
5. Environmental Protection Daily Question 12.5: Participate for prizes; 3 points for correct answers, plus another 3 points as a bonus - HCBBS Forum
6. Regarding the vertical installation of the outlet valve on LPG storage tanks? - HCBBS Forum
7. Discussed again the fire protection classification of hydrogen oxide solutions - HCBBS Forum
8. Is the temperature rise in the crude benzene hydrogenation pre-reactor increasing? - HCBBS Forum
9. Safety Management System for the Disposal of Production Equipment and Facilities - HCBBS Forum
10. Pressure rating of the valve’s pressure seal - HCBBS Forum
11. Selection of pneumatic conveying valves - HCBBS Forum
12. In which table should the conventional valves in the process package be filled in? - HCBBS Forum
13. Power distribution room located in the workshop - HCBBS Forum
14. What is the significance of saline ORP? - HCBBS Forum
15. What is the appropriate slope for a drainage ditch? - HCBBS Forum
16. Sign-in record post dated December 14, 2015 - HCBBS Forum
17. Discussion on the use of membrane grids - HCBBS Forum
18. I would like to ask those with practical welding experience about the performance comparison of common welding materials used in China - HCBBS Forum
19. How to deal with bubble problems in plastic product processing - HCBBS Forum
20. Please forgive me for having such a low sense of humor - HCBBS Forum
21. Why aren’t spring-loaded safety valves used for steam pipeline safety valves? - HCBBS Forum
22. Problems with the Yokogawa analog input card - HCBBS Forum
23. Will pressure fluctuations downstream of the valve affect the flow control of the electric control valve? - HCBBS Forum
24. Sign-in record post from December 11, 2015 - HCBBS Forum
25. 【Daily Question】Question from Issue 20151210 - HCBBS Forum
26. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-12-7) — Points are awarded for participation - HCBBS Forum
27. The top 10 management principles: when should they guide one’s life? - HCBBS Forum
28. 【Daily Question】Chemical Engineering Principles 255: Absorption Calculations (December 6) - HCBBS Forum
29. Can Class A storage tanks be placed in a Class A warehouse? - HCBBS Forum
30. Should the rules for selecting the top 10 in Haichuan be made clearer? - HCBBS Forum
31. Manufacturers of high-voltage switchgear – can you recommend some good ones? - HCBBS Forum
32. Treatment of high-salinity wastewater (salt removal, organic matter removal) - HCBBS Forum
33. One question per day (1210) - HCBBS Forum
34. 【Daily Question】December 11, 2015: Corrosion resistance of duplex stainless steel (Top 50 participants + 2 rewards) - HCBBS Forum
35. Vibration-resistant AC contactor - HCBBS Forum
36. Urgently seeking instrument developers - HCBBS Forum
37. Several questions regarding the processes in oil depots and gas stations - HCBBS Forum
38. 【Daily Question】12.6 True or False: Every non-zero digit that appears in the measurement data is a significant figure - HCBBS Forum
39. What is a WBS? - HCBBS Forum
40. Why cannot the pressure at the outlet of an indoor fire hydrant exceed 0.5 MPa? - HCBBS Forum
41. Diesel decolorization - HCBBS Forum
42. Which practical subject is better for chemical engineering designers taking the First-Class Constructor exam? - HCBBS Forum
43. Multiple-choice questions (with scoring) - HCBBS Forum
44. Mingmen Banquet – Top-tier Seafood Party to Open in Guangzhou Soon - HCBBS Forum
45. Some issues with ammonia, methanol, and coal-based ethylene glycol production - HCBBS Forum
46. Which marine friend has the electronic version of Goodyear hose materials? Could you recommend some domestic manufacturers of similar hoses? - HCBBS Forum
47. Everyone, work on these questions; there will be a reward for those who get them right. 113/2015 – Multiple-choice questions on Project Management for the First-Class Constructor Exam, 99 - HCBBS Forum
48. Problem of splitting the pressure transmitter signal in two - HCBBS Forum
49. Seeking a method to detect the presence of phenothiazines (in small amounts) in fatty acid ethyl esters - HCBBS Forum
50. Who is the Sea and River Wealth-Spending Boy? - HCBBS Forum
51. Regarding boiler pressure testing - HCBBS Forum
52. Questions regarding the setup of temperature and humidity transmitters as well as wind speed transmitters in the tank area - HCBBS Forum
53. What is the relationship between an electro-hydraulic converter and a hydraulic motor? - HCBBS Forum
54. Differences between API620 and 650 - HCBBS Forum
55. Questions regarding atmospheric and vacuum distillation - HCBBS Forum
56. Which is better among the various routes for coal tar hydrogenation? - HCBBS Forum
57. China Chemical’s Kazakhstan Natural Gas Chemical Complex Project - HCBBS Forum
58. Summary post: Environmental and energy-saving reference books and software (tools) uploaded by Haiyou - HCBBS Forum
59. Companies related to electrolytic copper - HCBBS Forum
60. Where should the water generated from the sludge in the plate-and-frame sludge thickening tank be sent? - HCBBS Forum
61. Seeking help with chromatographic analysis methods - HCBBS Forum
62. What is the classification of PS in ASTM PS? - HCBBS Forum
63. Is it okay not to operate environmental protection facilities when pollutants are discharged up to the specified standards? - HCBBS Forum
64. 【Popular Science on Polymers and Materials】--45 Polymers Related to Food + zdl1966 - HCBBS Forum
65. Thermal resistor is submerged in water; the thermometer gives inaccurate readings. Help! - HCBBS Forum
66. 20151211 One question per day - HCBBS Forum
67. Problems with the balance pipes in centrifugal compressors - HCBBS Forum
68. Learn *safety concepts from ants, and cultivate three types of safety awareness - HCBBS Forum
69. How to remove sulfur and nitrogen oxides from gas generators in the glass industry - HCBBS Forum
70. Safety Operating Procedures for Grinders - HCBBS Forum
71. Vessel-based synthesis initiator - HCBBS Forum
72. Everyone, work on these questions; those who get them right will receive a reward. 110 out of 2015 – Multiple-choice questions on \"Project Management\" for the 2015 First-Class Constructor Exam, question 96 - HCBBS Forum
73. 【Daily Question】2015.12.09 Welding equipment troubleshooting (2 wealth points for replying, +3–8 additional wealth points for a correct answer) - HCBBS Forum
74. How is the safety valve for a heating and hot water system calculated? - HCBBS Forum
75. Does a naphthalene storage area need ventilation? - HCBBS Forum
76. Another year has passed - HCBBS Forum
77. Issues with the use of bridge cranes in explosion-proof factories - HCBBS Forum
78. How long can a PTFE gasket last? Does it have an expiration date? - HCBBS Forum
79. 20151210 One question per day - HCBBS Forum
80. Release Guidelines for [Daily Question] in the Mechanical Category (Updated on 2015.12.16) - HCBBS Forum
81. 【Daily Question】Reissue 12.10: After installing ( ) on a pressure vessel, it is possible to directly measure the pressure of the medium inside the vessel - HCBBS Forum
82. A wrong IQ test - HCBBS Forum
83. On the gas phase pressure equilibrium issue in the unloading of flammable liquids - HCBBS Forum
84. How can several different domains of Yokogawa’s VNET/IP be connected using layer 3 switches? - HCBBS Forum
85. Occupational Health Fill-in-the-Blanks 3 - HCBBS Forum
86. Reputable domestic manufacturers of thin-film evaporators - HCBBS Forum
87. What type of pressure gauge should be used, and what installation method should be adopted, to measure the pressure of high-temperature flue gas (containing particles, at 700 degrees Celsius)? - HCBBS Forum
88. Abnormal noise from the plunger pump - HCBBS Forum
89. A question about LNG storage tanks. - HCBBS Forum
90. Please provide as detailed a Job Hazard Analysis (JHA) as possible for coking, hydrogen production, and hydrogenation processes - HCBBS Forum
91. 【Daily Question】12.10 Choose the incorrect statement among the following (2 points for a reply + 3–8 points if the answer is correct) - HCBBS Forum
92. High-purity ammonia production technology - HCBBS Forum
93. Translation issues for internal valve components - HCBBS Forum
94. Recommendation for light components under high pressure using equation of state - HCBBS Forum
95. How do you check the wires when there’s a problem with them on-site? - HCBBS Forum
96. 【Daily Question】December 7th – True or False: Steam is injected into the stripping tower primarily to reduce the partial pressure of hydrocarbons in the rich solvent. .. - HCBBS Forum
97. Seek advice on the design calculation for valve diameter - HCBBS Forum
98. What are the functions of the vent openings on a dry gas holder? - HCBBS Forum
99. 【Daily Question】2015.12.15 Preheating before welding (2 wealth points for a reply; +3–8 additional wealth points if the answer is correct) - HCBBS Forum
100. 【Daily Question】Question from Issue 20151210 - HCBBS Forum