English — Forum #723 (Page 467/642)

1. Wastewater Knowledge - 10-27 (Answers +2, Correct Answers +4) - HCBBS Forum
2. One question per day - HCBBS Forum
3. How to simulate a distillation column for the separation of dichloromethane and water? - HCBBS Forum
4. The reduction temperature of the methanol-to-hydrogen catalyst must not exceed 230 degrees - HCBBS Forum
5. Construction issues of steel structure column footings - HCBBS Forum
6. Consultation on fully enclosed belt conveyors - HCBBS Forum
7. When is it necessary to keep the pressing furnace in standby? - HCBBS Forum
8. What are the common types of valves used in circulating fluidized bed boilers? - HCBBS Forum
9. One post per day - HCBBS Forum
10. What are the hazards of slag leakage from the water-cooled air distribution plates in circulating fluidized bed boilers? - HCBBS Forum
11. Formula for 70m3 Tank Type 8 - HCBBS Forum
12. The difference between tube and pipe - HCBBS Forum
13. Technical assistance: Are there any construction standards for cement (concrete) floors? - HCBBS Forum
14. Vacuum pump inlet and outlet pressure - HCBBS Forum
15. Does the temperature of the furnace tube in a heating furnace refer to the wall temperature of the side exposed to the flame? - HCBBS Forum
16. Differences between National IV and National V diesel standards - HCBBS Forum
17. How to measure high concentrations of chloride ions (saturated sodium chloride and sodium sulfate solutions) - HCBBS Forum
18. How are nitrogen oxides formed? - HCBBS Forum
19. What do you think of people who don’t follow the rules? - HCBBS Forum
20. Everyone, let’s work on question 32-2015 from the First-Class Constructor Examination’s \"Engineering Economics\" section: multiple-choice questions 37-38. There will be a reward for those who answer correctly - HCBBS Forum
21. What should you do when your boss brings you a plan that simply won’t work in order to get it approved by the company’s management? - HCBBS Forum
22. 【Daily Question】Question from Issue 20151030 - HCBBS Forum
23. Four major issues in the park-based development of modern coal chemical industries remain unresolved - HCBBS Forum
24. What are the “mosts” of your devices? - HCBBS Forum
25. Training on Coating Matting Knowledge - HCBBS Forum
26. Secondary grouting of buffer tank foundation - HCBBS Forum
27. I finally quit! I stayed at this tiny, shoddy design firm for half a year; the salary was too low and there was no opportunity for growth - HCBBS Forum
28. Determination of spare parts quantity - HCBBS Forum
29. How is the flow rate of gas in a pipe calculated? - HCBBS Forum
30. What materials can dissolve in low-viscosity PVB and be shaped into a paste? - HCBBS Forum
31. How to operate a liquid ring vacuum pump correctly - HCBBS Forum
32. 【Daily Question】Question from Issue 20151103 - HCBBS Forum
33. What is the economic effectiveness of safety technology? - HCBBS Forum
34. 【Daily Question】 November 4th: Can the coke superpressure valve be opened? ? Pressure relief - HCBBS Forum
35. Could someone explain what the main responsibilities are of an instrumentation engineer who works on systems in engineering design? - HCBBS Forum
36. PDH propane catalytic dehydrogenation - HCBBS Forum
37. Trend types in the Siemens TP1500 touch screen - HCBBS Forum
38. Data on the physical properties of high-pressure air, such as viscosity, specific heat, and thermal conductivity - HCBBS Forum
39. 【Production and Management Division】Special Post on Wage and Bonus Payments for October 2015 - HCBBS Forum
40. A crisis is coming! Robots are taking your jobs - HCBBS Forum
41. Feasibility of adding a bypass to the main steam valve in the boundary area? - HCBBS Forum
42. Issues with Modbus communication between Yokogawa CENTUM VP and PLCs - HCBBS Forum
43. I have questions regarding the installation of methanol storage tanks; I hope experienced colleagues can provide answers - HCBBS Forum
44. Is it necessary to have a control room for renovated hazardous chemical use facilities? - HCBBS Forum
45. Upgrade Direct Traffic – Freelancer Bounties, welcome! Heat exchange version – Please upgrade after management - HCBBS Forum
46. Regarding the pump’s suction issue, please ask a senior for help - HCBBS Forum
47. What are the sources of sulfur dioxide emissions? - HCBBS Forum
48. How to view chemical trading companies - HCBBS Forum
49. Let’s work on Questions 30-2 from the 2015 First-Class Constructor Examination – Multiple Choice Questions 33-34 in \"Engineering Economics\"; there will be a reward for correct answers - HCBBS Forum
50. Acid cleaning and passivation of butadiene pipelines - HCBBS Forum
51. throttling orifice plate - HCBBS Forum
52. Which software is used to draw single-line diagrams during factory pipeline renovations, and can it count the number of pipe fittings? - HCBBS Forum
53. Methanol Weekly Topic: How to handle the numerous by-products generated in methanol production? 2015.11.02--11.09 - HCBBS Forum
54. Heating issues in production workshops during winter - HCBBS Forum
55. What coatings are used for internal anti-corrosion in benzene, toluene, and xylene storage tanks? - HCBBS Forum
56. Discussion on whether it is necessary to recycle the gas used for the compressor packing seal - HCBBS Forum
57. I’m coming to see if there are anyone with a longer history on Haichuan Network than me. - HCBBS Forum
58. What is the effect of fuel particle size on the combustion share in circulating fluidized bed boilers? - HCBBS Forum
59. 【Isobutane Dehydrogenation】Control parameters for isobutane dehydrogenation catalysts - HCBBS Forum
60. Do you know what the requirements are for operating and maintaining tower cranes? - HCBBS Forum
61. How can pressure vessels be classified according to the way they are subjected to pressure? - HCBBS Forum
62. Synthesis system hydrogen-to-nitrogen ratio - HCBBS Forum
63. Clean a 100-liter liquid nitrogen storage tank - HCBBS Forum
64. -Can unpressurized components at 55℃ use seamless pipes per GB/T 8163? - HCBBS Forum
65. Seeking information assistance - HCBBS Forum
66. How many people don’t know?… - HCBBS Forum
67. Comparative analysis of the advantages of different types of xenon arc aging test machines - HCBBS Forum
68. Zinc smelting Precipitated alum - HCBBS Forum
69. Safety precautions for underground salt acid storage tanks - HCBBS Forum
70. What to do if an occupational contraindication is detected during a pre-employment medical examination? - HCBBS Forum
71. How to start a back-pressure steam turbine - HCBBS Forum
72. Chemical equipment management - HCBBS Forum
73. 【Daily Question】Question from Issue 20151104 - HCBBS Forum
74. Regarding the qualifications of non-destructive testing personnel and their scope of work - HCBBS Forum
75. Compensation issues for torch pipelines - HCBBS Forum
76. Issues regarding closed-loop condensate recovery systems - HCBBS Forum
77. How should the fire protection distance between the liquefied gas storage tanks in petrochemical enterprises and the ground flares of adjacent enterprises of the same type be determined? - HCBBS Forum
78. Ignition of the oven with four nozzles - HCBBS Forum
79. 【Daily Question】10.28 Multiple-choice question: The greater the gas-phase mixing in the methanol recovery tower, the more （ ） will be carried out of the tower top - HCBBS Forum
80. I just graduated 5 years ago and want to read some books; what kind of certificate would be useful to obtain? - HCBBS Forum
81. “Haichuan Irrigation Co., Ltd. Convenience Store” – Are you still watching Season 3 of Running Man? - HCBBS Forum
82. Does anyone have the new version of 50160? - HCBBS Forum
83. Where to go from here - HCBBS Forum
84. Seeking help regarding the tolerance for the center distance between flange bolt holes - HCBBS Forum
85. Powder heat transfer problem - HCBBS Forum
86. Sign-in record post from November 4, 2015 - HCBBS Forum
87. Vibrating fluidized bed dryer - HCBBS Forum
88. Classification of carbon dioxide pressure vessels containing coal powder - HCBBS Forum
89. Regarding the tuning of valve positioners - HCBBS Forum
90. How to determine the maximum load that a DCS power supply module can handle - HCBBS Forum
91. 【Daily Question】 November 5th: Excessive steam flow can cause what? ? ? ? - HCBBS Forum
92. Why are there no lucky rewards for posting topic posts anymore? - HCBBS Forum
93. 【Daily Question】Question 30: Test question from issue 20151029 (Reply +2)； For the other +3) - HCBBS Forum
94. 【Daily Question】10.28 True or False: Increasing the reflux ratio can improve the reflux effect (Reply with +2 wealth) - HCBBS Forum
95. The application of activated carbon in the treatment of domestic wastewater - HCBBS Forum
96. Type B high-temperature thermocouples do not have an mv value - HCBBS Forum
97. Why is the voltage at the cathode frame and individual cell slots 2 to 3 V higher than that of the other cell slots? - HCBBS Forum
98. Are the device material information cards and hazard warning signs the same thing? - HCBBS Forum
99. Vertical management of environmental law enforcement during the 13th Five-Year Plan period - HCBBS Forum
100. 2-Methyl**furan vaporization heat - HCBBS Forum