English — Forum #723 (Page 350/642)

1. 【Daily Question】2016.2.23 Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
2. How can one determine whether the stiffness of the equipment is appropriate, so as to prevent deformation of the equipment? - HCBBS Forum
3. Can pipe materials replace sheet metals in welder qualification tests? - HCBBS Forum
4. What is the drying process and principle for trisodium phosphate dodecahydrate? - HCBBS Forum
5. The **standard** on \"Energy Efficiency Limits and Energy Efficiency Grades for Petrochemical Centrifugal Pumps\" has been released - HCBBS Forum
6. On the natural ventilation force in chimney design - HCBBS Forum
7. 【Daily Question】Chemical Engineering Principles 329: Resin Regeneration (February 27) - HCBBS Forum
8. Welding material AWS - HCBBS Forum
9. Is it necessary to connect a nitrogen line to the underground oil-containing wastewater tanks and the amine solution preparation and recovery tanks? - HCBBS Forum
10. What is the manual/automatic switch for the DCS regulator? - HCBBS Forum
11. Calibration of cryogenic air separation nitrogen production unit - HCBBS Forum
12. The problem of scaling in boiler water treatment systems - HCBBS Forum
13. 【Life District】February 2016 Thread on Moderator Salaries - HCBBS Forum
14. PDS exhaust gas desulfurization manufacturers - HCBBS Forum
15. Urea ammonia pump plunger material - HCBBS Forum
16. The second installment of original riddles – win flowers by guessing correctly - HCBBS Forum
17. How to adjust overheating in a reformation four-in-one furnace - HCBBS Forum
18. Secondary meter detection of quality parameters in production control - HCBBS Forum
19. Selection of water medium cut-off valves - HCBBS Forum
20. See how people in Shenzhen speculate on real estate - HCBBS Forum
21. 【Basic Knowledge Activity】Professional “Basic Knowledge” in the petrochemical industry: What are unsaturated hydrocarbons? - HCBBS Forum
22. I wonder why the SH/T3010-2013 \"Design Code for Insulation of Petrochemical Equipment and Piping\" does not contain any provisions regarding pipeline insulation... - HCBBS Forum
23. Have you all heard of self-supported floating boats? - HCBBS Forum
24. 5 Types of Accidents in Confined Spaces and 9 Safety Management Measures (Continued) - HCBBS Forum
25. Motor start-up - HCBBS Forum
26. The issue of oil consumption in crude benzene processing - HCBBS Forum
27. 【Daily Topic】【Civil Engineering Version 20160229】 - HCBBS Forum
28. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 445 - HCBBS Forum
29. Internal leakage in the heat exchanger at the inlet of the synthesis tower - HCBBS Forum
30. Question: Which standard or specification specifies that insulating gaskets must be installed in distribution cabinets? - HCBBS Forum
31. What level of oxygen content in circulating hydrogen is considered safe? - HCBBS Forum
32. Nominal pressure of liquid ammonia pipelines - HCBBS Forum
33. What is the impact of raw material properties on distillation? - HCBBS Forum
34. The inlet pipe of the water pump vibrates severely; seeking help - HCBBS Forum
35. 【Weekly Topic】【HVAC Version 20160224】 - HCBBS Forum
36. 【Daily Question No. 126】March 03, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
37. What are the methods for removing arsenic from acidic solutions? - HCBBS Forum
38. Reason why the compressor auxiliary oil pump cannot start automatically when it stops - HCBBS Forum
39. The solenoid valve of the disc filter burns out frequently - HCBBS Forum
40. Environmental Protection Tip of the Day 2.24: Reward for participation is 5 points, plus another 5 points for answering correctly - HCBBS Forum
41. 【Daily Question No. 92】February 29, 2016: +2 wealth for participation, +3 additional wealth for a correct answer - HCBBS Forum
42. For a solution made of petroleum resin and solvent oil, are there any effective methods to determine the content of petroleum resin in the solution? - HCBBS Forum
43. Regarding equipment cost - HCBBS Forum
44. I would like to ask if there are any good methods for removing total chlorine impurities from materials - HCBBS Forum
45. 5 years of experience as an instrument technician; due to family reasons, I want to return home to look for a job (Hui’an) - HCBBS Forum
46. Which domestic company produces large screw compressors? - HCBBS Forum
47. Professional title - HCBBS Forum
48. Question: Selection of components for the demister in the esterification reactor - HCBBS Forum
49. What is the role of the guide vane in an expander? Can it generate cold? What is the difference between it and isenthalpic throttling? Please give me some advice! - HCBBS Forum
50. Tar tank cleaning - HCBBS Forum
51. Selection of air coolers - HCBBS Forum
52. 【Weekly Topic】【Engineering Version 20160302】 - HCBBS Forum
53. 【Basic Knowledge of Occupational Health】: Occupational Hygiene - HCBBS Forum
54. Material grade - HCBBS Forum
55. 【Daily Question】Chemical Engineering Principles 333: Treatment of Abnormal Water Quality (March 3) - HCBBS Forum
56. 20160301 One question per day - HCBBS Forum
57. Safety valve discharge time issue - HCBBS Forum
58. May I ask everyone how to solve this problem? - HCBBS Forum
59. Pressure Vessel WPS Welding Materials F-No. - HCBBS Forum
60. CO2 compressor rotor erosion - HCBBS Forum
61. Fire water screens are installed between the spherical tanks - HCBBS Forum
62. I want to buy a few portable four-in-one alarms and temperature guns; could you recommend some that are of good quality? - HCBBS Forum
63. 5 years of experience in pipeline equipment installation - HCBBS Forum
64. Design specifications for gas generator rooms - HCBBS Forum
65. 【Weekly Topic】【Storage & Transportation Edition 20160226】 - HCBBS Forum
66. Shaanxi Coal Chemical and Sinopec Great Wall Energy Chemical plan to jointly establish a coal-to-gas project - HCBBS Forum
67. 【Basic Knowledge of Occupational Health】 – Work-related Injury Recognition - HCBBS Forum
68. Who has electrical drawing software? Please share - HCBBS Forum
69. 【Joint Study*】【Civil Engineering Version 20160222】 - HCBBS Forum
70. 【Daily Question No. 120】February 24, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
71. Heat exchanger design - HCBBS Forum
72. Control system of alumina plant - HCBBS Forum
73. Be vigilant against signs of distortion in the inventory reduction process - HCBBS Forum
74. Pneumatic valve neutral point - HCBBS Forum
75. 【Weekly Topic】【Production Version 20160225】 - HCBBS Forum
76. 【Daily Topic】【Quality Version 20160222】 - HCBBS Forum
77. Is gaseous ammonia or liquid ammonia better for producing ammonium phosphate? - HCBBS Forum
78. Learn to face the hurt head-on - HCBBS Forum
79. 【Joint Study*】【Civil Engineering Version 20160304】 - HCBBS Forum
80. Sign-in record post from March 2, 2016 - HCBBS Forum
81. 【Daily Topic】【Quality Version 20160226】 - HCBBS Forum
82. Use of diaphragm couplings - HCBBS Forum
83. Temperature measurement of centrifugal fan motors - HCBBS Forum
84. Water in the water system of the wash tower in the multi-nozzle gasification unit - HCBBS Forum
85. 【Daily Question No. 91】February 26, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
86. Pipeline stress issues related to the increase in operating pressure of pipelines - HCBBS Forum
87. Positioner positive and negative feedback - HCBBS Forum
88. Oil properties, diesel pour point - HCBBS Forum
89. Incorrect operation of boiler feedwater pH resulted in a low value - HCBBS Forum
90. Methanol One question per day Heat exchangers 2016.02.23 - HCBBS Forum
91. Phuket, a tourist destination in Thailand’s capital Bangkok, hires 15 Chinese language teachers - HCBBS Forum
92. The “roadmap” for the development of urban planning in our country is clear - HCBBS Forum
93. Safety in Production Slogans - HCBBS Forum
94. 【Weekly Topic】【Engineering Version 20160226】 - HCBBS Forum
95. Occupational Health Daily Question 3.1: Participate for a prize; 5 correct answers and another prize will be given - HCBBS Forum
96. Methanol synthesis catalyst unloaded without deactivation! - HCBBS Forum
97. 【Chemical Processing】Seeking the operating procedures for purging and flushing the reactor before replacing the catalyst in MTBE production - HCBBS Forum
98. 20160302 One question per day - HCBBS Forum
99. 【Daily Question】Hydrogenation Section 2016-02-29 Single-choice Question - HCBBS Forum
100. Type of inlet filter and mesh size for the wash tower feed water pump - HCBBS Forum