English — Forum #723 (Page 429/642)

1. What is the difference between an external level gauge and an external magnetic float level transmitter? - HCBBS Forum
2. Lubricant filtration issue - HCBBS Forum
3. Does anyone here know about Lemerre valves? - HCBBS Forum
4. Question regarding ethanol distillation - HCBBS Forum
5. One question per day (1204) - HCBBS Forum
6. 【Daily Question】Question from Issue 20151203 - HCBBS Forum
7. Now is the best time to introduce orchids - HCBBS Forum
8. 【Daily Question】Wastewater Knowledge - 12-1 (Answer +2, Correct Answer +5) - HCBBS Forum
9. What are the occupational safety measures for methanol production? - HCBBS Forum
10. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 373 - HCBBS Forum
11. Looking for air-type dry-cooling vacuum pumps; those with expertise or experience in this area, please come forward - HCBBS Forum
12. Definition of welding speed - HCBBS Forum
13. Air compressor selection - HCBBS Forum
14. 【Daily Question】Question from 20151204 - HCBBS Forum
15. Who has materials related to research on strategies for the clean, efficient, and sustainable development of coal in China? - HCBBS Forum
16. Flow meter selection issue, ammonium chloride - HCBBS Forum
17. Gearbox selection - HCBBS Forum
18. Issues with sand accumulation in pipelines and valves after the introduction of medium-pressure steam - HCBBS Forum
19. I need a QuickCool drawing - HCBBS Forum
20. Ammonium chloride pump material - HCBBS Forum
21. Water treatment - HCBBS Forum
22. One question per day (1127) - HCBBS Forum
23. Is it necessary to add a neutralization tank before ethylene oxide enters the reaction vessel? - HCBBS Forum
24. Request an introduction to the equipment used in the dry quenching process - HCBBS Forum
25. Mechanical seal - HCBBS Forum
26. What is distillation, and what is the principle behind it? - HCBBS Forum
27. Regarding high-pressure water injection - HCBBS Forum
28. Gasoline hydrogenation - HCBBS Forum
29. Can a process engineer from a chemical plant take the exam to become a registered chemical engineer? - HCBBS Forum
30. (Basic knowledge) What are the characteristics of bubble fluidized bed boilers? - HCBBS Forum
31. Issues regarding the plates of plate heat exchangers - HCBBS Forum
32. 【Daily Question】Question from Issue 20151201 - HCBBS Forum
33. Distance between inverter and motor - HCBBS Forum
34. Several questions on the identification of occupational hazard factors - HCBBS Forum
35. Can coal-derived C5 and catalytically produced C5 be blended? ? - HCBBS Forum
36. What is the lime alkalization method for iron removal? How to prepare lime solution? - HCBBS Forum
37. Briefly describe the normal startup steps for double-column distillation? - HCBBS Forum
38. Urgently need the PIDCAD2008 drawing software - HCBBS Forum
39. Purchase of sterile flanges per DIN11864-2 - HCBBS Forum
40. Looking for jobs in Cangzhou area, Hebei Province and Binhai New Area, Tianjin - HCBBS Forum
41. 【Daily Question】Question from Issue 20151202 - HCBBS Forum
42. Installation of the working fluid (exhaust) pipeline for water ring vacuum pumps - HCBBS Forum
43. Guys, I’d like to ask what kind of butterfly valve the GD341X pipeline butterfly valve is ? - HCBBS Forum
44. Heating methods for heavy oil - HCBBS Forum
45. Inspection of long-distance pipelines - HCBBS Forum
46. aspen result available with error - HCBBS Forum
47. I need a template for a special section on the design of occupational disease prevention facilities in construction projects! - HCBBS Forum
48. Intrinsic safety explosion-proof touch screen - HCBBS Forum
49. Briefly describe the normal shutdown steps for double-column distillation? - HCBBS Forum
50. Questions regarding the maintenance of high-voltage motors - HCBBS Forum
51. What to do if the drain is clogged with hair? - HCBBS Forum
52. What is a primary air control flap? - HCBBS Forum
53. Who makes the sampling cylinders made of Inconel 825 material? - HCBBS Forum
54. What are some of the common extremely hazardous (Category 3) media? - HCBBS Forum
55. 【Picture of the Day】12.4: What device is shown in this picture? - HCBBS Forum
56. What are the reasons for severe frosting on the compressor and its pipelines in a cold dryer? How to deal with it? - HCBBS Forum
57. What is the principle of the SNCR process? - HCBBS Forum
58. Regarding low-temperature ethylene pumps - HCBBS Forum
59. How long does it take to start a steam turbine? - HCBBS Forum
60. What are the main toxic and harmful substances in methanol production? - HCBBS Forum
61. Reconstruction of the synthesis tower - HCBBS Forum
62. Operating procedures - HCBBS Forum
63. Control of the temperature in the reactive distillation column - HCBBS Forum
64. Should the hot water pipe be connected using flanges or threads? - HCBBS Forum
65. Issue with the outlet temperature of the methanol synthesis air cooler - HCBBS Forum
66. Is there any plan to produce a second season of ‘Haichuan Baby Show’ for the home version? - HCBBS Forum
67. Selection of gas washing tower - HCBBS Forum
68. Looking for partners - HCBBS Forum
69. Are there any girls working as process engineers in chemical plants? - HCBBS Forum
70. The temperature difference causes water droplets to adhere to the surface of the mud cake, increasing its moisture content - HCBBS Forum
71. December 2, Boiler Foundation Question 108: (A certain score will be given to the top 50) - HCBBS Forum
72. We are looking for someone familiar with the ethylene glycol synthesis process for this project! - HCBBS Forum
73. In production practice, how to prevent sieve plates from getting clogged? - HCBBS Forum
74. What are the characteristics of electromagnetic flowmeters? - HCBBS Forum
75. Regarding seal oil for pumps - HCBBS Forum
76. Maximum allowable area for triethylaluminum empty cylinder storage - HCBBS Forum
77. The Great Battle of Jiang-Liao: An initial assessment of the top contenders’ strength - HCBBS Forum
78. Oil blending - HCBBS Forum
79. I have a question for everyone: what is the scientific formula for calculating the dosage of dispersant in the ash and water treatment system for Texaco’s coal-to-gas process? - HCBBS Forum
80. May I ask everyone, the tangential torque curve of a four-cylinder reciprocating compressor - HCBBS Forum
81. The issue of control strategy priority - HCBBS Forum
82. Pre-sulfurization precautions for catalysts - HCBBS Forum
83. 【Daily Question】November 27, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
84. One question per day (1130) - HCBBS Forum
85. What is the difference between alkylation, isomerization, and catalytic reforming? What are the differences among the raw materials? - HCBBS Forum
86. Who can provide the guidelines for preventing coking in the fractionation of catalytic cracking reactions? - HCBBS Forum
87. Chemical hazardous waste incinerator - HCBBS Forum
88. How to select a supported bearing? - HCBBS Forum
89. What chemical syntheses generate waste sodium hydroxide? - HCBBS Forum
90. What type of control valve is used for chloroacetic resin? - HCBBS Forum
91. What impact does an excessive level of free acid in the methanol feedstock used in MTBE plants have on the catalysts used in MTBE production as well as on the MTBE product itself? - HCBBS Forum
92. PTFE pipes are used in low-temperature applications - HCBBS Forum
93. Regulation methods of turbine compressors - HCBBS Forum
94. 【Daily Question】Question from Issue 20151203 - HCBBS Forum
95. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 382 - HCBBS Forum
96. (Boiler foundation) What is the difference between the critical fluidization velocity under hot and cold conditions? - HCBBS Forum
97. How to make a design choice for the structural forms of manholes and access holes? - HCBBS Forum
98. 【Daily Question】Question from Issue 20151130 - HCBBS Forum
99. One question for discussion per day - HCBBS Forum
100. Question 106 on Boiler Foundations, November 30: (A certain score will be given to the top 50) - HCBBS Forum