English — Forum #723 (Page 379/642)

1. 【Daily Question】1.24 Corrosion of Cu sheets in oxygenated H2SO4 (3 rewards for replying + additional 3–8 rewards for correct answers) - HCBBS Forum
2. Explanation of control loops in the process procedure - HCBBS Forum
3. Production stopped in October, and water was supplied intermittently until the middle of the month. Now the temperature is extremely low; even the aeration tanks have started to freeze over. This kind of situation... - HCBBS Forum
4. Method for purifying copper, cadmium, lead, and tin from ammonia-leached zinc solution - HCBBS Forum
5. MVR flow diagram or PID diagram - HCBBS Forum
6. It’s so cold today - HCBBS Forum
7. Question: During the wet extraction of copper, the organic phase of Lix984 turns gray in color, making phase separation difficult. What is the saturation capacity for laboratory experiments... - HCBBS Forum
8. The latest 2016 edition of the textbook for Mechanical and Electrical Practice for Level 2 Construction Engineers - HCBBS Forum
9. How is the heating price determined in CHP projects? - HCBBS Forum
10. 【Daily Question No. 67】January 15, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
11. 【Joint Study*】【HVAC Version 20160121】 - HCBBS Forum
12. Has everyone started the VOC reduction efforts? - HCBBS Forum
13. Degree of automation in chemical processes - HCBBS Forum
14. Gas cylinder filling issues - HCBBS Forum
15. Is the injection speed related to any certain factors? - HCBBS Forum
16. Tuning plan for the particle size distribution of coal fed into a circulating fluidized bed boiler - HCBBS Forum
17. Questions about the alarm - HCBBS Forum
18. Is this traffic correct? - HCBBS Forum
19. Detailed diagram of the gas station emergency shutdown system - HCBBS Forum
20. Does your company have a technical catalog? - HCBBS Forum
21. Is it possible to register for the environmental impact assessment exam, having graduated in July 2011? - HCBBS Forum
22. [Safety & Environment Section] Summary Post on Haichuan’s “Thanksgiving Season” Campaign - HCBBS Forum
23. 【Daily Topic】【Quality Version 20160113】 - HCBBS Forum
24. 【Hydrogen Production Section】Seeking a real moderator (reply with +5 wealth); no unsolicited messages - HCBBS Forum
25. 【Daily Topic】【Live Version 20160118】 - HCBBS Forum
26. Are the English and computer tests required for intermediate professional titles in the Beijing chemical industry? ? ? - HCBBS Forum
27. 【Joint Study*】【HVAC Version 20160119】 - HCBBS Forum
28. ★Specialized Examination for Chemical Engineering ★ — One question per day (2016-1-22) — Points are awarded for participation - HCBBS Forum
29. I would like to know the two differences in the design specs for simulation - HCBBS Forum
30. Regarding the air separation expansion oil system - HCBBS Forum
31. How to draw wiring diagrams for petrochemical industries - HCBBS Forum
32. 【Daily Question】Chemical Engineering Principles 299: Chemical Cleaning (January 19) - HCBBS Forum
33. Operating pressure, design pressure, nominal pressure, and test pressure of pipelines - HCBBS Forum
34. With L/L-CNG added to the storage tanks, how can the safety distance from the existing oil tanks be maintained? - HCBBS Forum
35. 【Daily Question】January 20, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
36. Process piping software - HCBBS Forum
37. Code for Fire Protection Design of Petrochemical Enterprises - HCBBS Forum
38. Properties and composition of catalyzed diesel - HCBBS Forum
39. 【Daily Question】1.15 Multiple-choice question: What factors affect the value of the equilibrium constant for chemical reactions? (New Year’s bonus!) - HCBBS Forum
40. What is the function of trisodium phosphate? Conditions for functioning - HCBBS Forum
41. How are refinery utility costs calculated? - HCBBS Forum
42. DCS problem - HCBBS Forum
43. 【Daily Topic】【Civil Engineering Version 20160123】 - HCBBS Forum
44. Re-coating of glass-lined reaction vessels - HCBBS Forum
45. Answer the Daily Question - HCBBS Forum
46. Explain the following SIS system configuration diagram: at the CRAR layer, what is the purpose of the cabinet? - HCBBS Forum
47. 6 Great Tips for Caring for Your Car on Rainy Days - HCBBS Forum
48. What standard is PTC 18? - HCBBS Forum
49. 【Daily Question】 January 21st What is the reaction temperature? ? ? Control. - HCBBS Forum
50. Transformer Generator - HCBBS Forum
51. Eligibility requirements for registering as a chemical engineering engineer - HCBBS Forum
52. 【Daily Question】2016.1.15 Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
53. What are the requirements for cleaning jet fuel storage tanks? - HCBBS Forum
54. Can high-speed motors be speed-controlled using ordinary frequency converters? - HCBBS Forum
55. Information request from Xi’an Daote Petrochemical Engineering Co., Ltd - HCBBS Forum
56. On submerged arc welding – Welding procedure qualification - HCBBS Forum
57. CNOOC can no longer hold on; it cuts production for the first time in 16 years - HCBBS Forum
58. I don’t know when I’ll change careers - HCBBS Forum
59. Can a breather valve and a safety valve be vented through the same pipe? - HCBBS Forum
60. ★Specialized Examination for Chemical Engineering ★ — One question per day (2016-1-20) — Points are awarded for participation - HCBBS Forum
61. 【Weekly Topic】Why do the internal components of coal lock valves and ash lock valves used in pressurized gasification of pulverized coal deform after long-term use? - HCBBS Forum
62. PLC and DCS - HCBBS Forum
63. Environmental Protection Daily Question 1.14: Participate for a prize; 3 correct answers earn an additional 5 as a prize - HCBBS Forum
64. Orifice plate flow meter - HCBBS Forum
65. How to set so that replies are only visible to the original poster - HCBBS Forum
66. Purging and commissioning plan for the new atmospheric and vacuum distillation unit - HCBBS Forum
67. How should the welding joint coefficient for spherical heads be selected? - HCBBS Forum
68. Future development prospects of lithium batteries - HCBBS Forum
69. Pump vibration analysis - HCBBS Forum
70. What to do if the outlet pressure of the air compressor is too low? - HCBBS Forum
71. 【Preparation for starting and stopping】What are the disadvantages of winter testing? - HCBBS Forum
72. Briefly describe how key equipment should be selected - HCBBS Forum
73. I have a question regarding heat-recovery coke ovens for everyone - HCBBS Forum
74. Are the valves on the bypass pipes inside the natural gas pipeline line isolation valve room closed or open under normal conditions? - HCBBS Forum
75. I want to pursue a part-time PhD - HCBBS Forum
76. The company plans to add a hydrocracking unit and is seeking relevant information. - HCBBS Forum
77. 【Daily Question】1.19 Multiple-choice question: Under the same conditions, among the following substances with the same mass, which one contains the greatest number of molecules? ( ...) - HCBBS Forum
78. What is the purpose of the flushing diesel on the pump? - HCBBS Forum
79. What is the working principle of a speed increaser and what are the requirements for its routine maintenance? - HCBBS Forum
80. Should the owner’s construction management system include a civil engineering management system, an equipment installation management system, and a piping, instrumentation, and electrical management system? - HCBBS Forum
81. What are the selection guidelines for control valves? - HCBBS Forum
82. 【Daily Topic】【Live Version 20160112】 - HCBBS Forum
83. Differences in the selection between spur gears and helical gears - HCBBS Forum
84. Compressor top shaft oil system - HCBBS Forum
85. What is the impact of the maximum inlet pressure on a centrifugal pump? - HCBBS Forum
86. 【Weekly Topic】Discussion on the advantages and disadvantages of double-pass shell-and-tube heat exchangers, January 13, 2016 ~ January 20, 2016? - HCBBS Forum
87. Bolt magnetic particle inspection criteria - HCBBS Forum
88. What is the difference between 20 steel and L245? - HCBBS Forum
89. Looking for software in CAD to check for overlapping lines - HCBBS Forum
90. The double-flange level gauge experiences large fluctuations - HCBBS Forum
91. How to calculate the amount of reduced energy consumption in kilograms of standard oil per ton by reducing energy losses - HCBBS Forum
92. Environmental Protection Daily Question 1.16: Participate for a prize; 3 correct answers and an additional 5 prizes will be given - HCBBS Forum
93. Cleaning of primary drum screen - HCBBS Forum
94. Part-time job required for piping work in air separation cold box - HCBBS Forum
95. Haichuan Gratitude Season – Expressing gratitude to the first teacher who came to the school【Career 013】 - HCBBS Forum
96. What items should be included in the fees for basic design? - HCBBS Forum
97. 【Efficient Preparation】Six Exam Strategies for the 2016 Professional English Test: Key Points to Review Before the Exam - HCBBS Forum
98. Who has information related to liquid hydrogen? Thank you - HCBBS Forum
99. Sign-in record post from January 24, 2016 - HCBBS Forum
100. Who has the latest version of fire safety regulations from 2015? - HCBBS Forum