English — Forum #723 (Page 640/642)

1. The success of any endeavor cannot make up for the failure in a child’s education! - HCBBS Forum
2. Temperature difference control - HCBBS Forum
3. Is it better to go with a bare-bones package or a full-service package for the renovation? - HCBBS Forum
4. How do people learn *work safety laws? - HCBBS Forum
5. What should a newcomer in a design institute do in their first year - HCBBS Forum
6. Three-in-one furnace negative pressure - HCBBS Forum
7. Unloading of C4 compressor - HCBBS Forum
8. What does it mean to complete the entire design by adding a skylight? What stage is the design for the sunroof version at? - HCBBS Forum
9. Daily Question 2015.6.10-001 (EIA Discussion): 2 Wealth points as a reward for replying, plus 3 Wealth points for a correct answer - HCBBS Forum
10. Do the valves for the desulfurization fluid require special materials? - HCBBS Forum
11. Low-temperature methanol washing, carbon dioxide separation tower, increasing pressure – what are the effects on the system after operation? - HCBBS Forum
12. 【Daily Question】Chemical Engineering Principles 073: Inner Layer of Laminar Flow (June 7) - HCBBS Forum
13. Research, development, and production of cyanide-containing compounds and nitrile compounds, as well as the research, development, and production of downstream derivatives of acrylonitrile - HCBBS Forum
14. The spiral plate heat exchanger is clogged with cotton waste and sediment - HCBBS Forum
15. On the connection between models using different physical property methods - HCBBS Forum
16. “Can “Laozi” be considered a swear word? - HCBBS Forum
17. Setting of alarms for flammable and toxic gases - HCBBS Forum
18. Key points of manufacturing control for waste heat boilers - HCBBS Forum
19. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 66 - HCBBS Forum
20. Why do trays in the main production line tend to become clogged with salts? - HCBBS Forum
21. What is an appropriate level for oxygen content control in the interlock protection of hydrogenation reactors? - HCBBS Forum
22. Comparison of sludge generation volume - HCBBS Forum
23. What is the temperature range of the working medium for IR centrifugal hot water pumps? - HCBBS Forum
24. Solubility curves of hexachloroethane and tetrachloroethylene at different temperatures - HCBBS Forum
25. PTA company handles equipment management - HCBBS Forum
26. Variable frequency speed control of Roots blowers - HCBBS Forum
27. Problems with liquid level gauges in atmospheric pressure storage tanks - HCBBS Forum
28. 400m3 nitrogen gas tank - HCBBS Forum
29. Solve the entire math problem! - HCBBS Forum
30. Coal-to-methanol - HCBBS Forum
31. Flue gas pipeline - HCBBS Forum
32. Coked plant cold coker water - HCBBS Forum
33. Advanced treatment and reuse of wastewater - HCBBS Forum
34. When welding white steel (FeIV) using gas tungsten arc welding (GTAW), solid wire is used – is it necessary to have a shielding gas on the back side? - HCBBS Forum
35. How to address severe water hammer in tubular soda mixers? - HCBBS Forum
36. What is the issue regarding the selection of dust removal equipment under this operating condition? - HCBBS Forum
37. When does the motor need to send a current signal to the DCS? What about the ammeter? - HCBBS Forum
38. Was your salary paid on time? - HCBBS Forum
39. How to escape urgently in case of a \"chemical spill\" - HCBBS Forum
40. How to perform non-destructive testing on pipes with a wall thickness of less than 2 mm - HCBBS Forum
41. New member here! Ask about injection molding! - HCBBS Forum
42. Urea uses 25-2-22 material - HCBBS Forum
43. Contact information for Chengda Engineering Company - HCBBS Forum
44. Corrosion problems in stainless steel heat exchangers - HCBBS Forum
45. Start-up and shutdown of diesel upgrading - HCBBS Forum
46. What to do if the axial force on the heat exchange tubes of a floating-head heat exchanger is too high? - HCBBS Forum
47. Problems with horizontal single-stage centrifugal pumps - HCBBS Forum
48. Material selection - HCBBS Forum
49. It is recommended to use two lines for the bank deposit password to verify whether it has been entered incorrectly. - HCBBS Forum
50. Welding of ordinary carbon steel pipes - HCBBS Forum
51. Analysis of the reasons for the failure in the cold oil cooler renovation - HCBBS Forum
52. Isotacticity online analyzer applied in Guangzhou Petrochemical’s polypropylene plant - HCBBS Forum
53. Reforming waste heat boiler - HCBBS Forum
54. I want to publish a paper on methanol catalysts - HCBBS Forum
55. What requirements do specialties such as piping, HVAC, and telecommunications put forward to the civil engineering structure specialty? Can the structure specialty prepare the foundation drawings? - HCBBS Forum
56. Regarding CNG refueling issues - HCBBS Forum
57. 【Daily Question】June 2: Reciprocating compressor question (First 80 participants + 2 extra points for correct answers; 3–8 wealth points additionally) - HCBBS Forum
58. One question per day: 6 wealth points for a correct answer, 2 wealth points for participation, Question 217 - HCBBS Forum
59. Problems with PLC systems - HCBBS Forum
60. Dynamic parameters of DMC in Aspen simulation - HCBBS Forum
61. 【Petroleum Sector】The “popular” aspects of the petrochemical industry + Changes that keep people talking (Motivational 002) - HCBBS Forum
62. Coking fractionation tower vent hole - HCBBS Forum
63. Baking process to increase the iron content in red slag - HCBBS Forum
64. Analysis of PVC raw material prices on June 3 - HCBBS Forum
65. Classification of medium states - HCBBS Forum
66. SEI vs. Chengda, which to choose? - HCBBS Forum
67. Excuse me, what is B3D? - HCBBS Forum
68. Discuss the treatment processes for cotton pulp black liquor wastewater - HCBBS Forum
69. Types, uses, and value of polyacrylamide - HCBBS Forum
70. Difference between internal compression and external compression in air separation - HCBBS Forum
71. How is Changzhou Ruihua’s styrene technology? - HCBBS Forum
72. Does anyone have any materials related to physical cleaning? - HCBBS Forum
73. “One Question per Day” June 3: Sequence of the condensation reaction of petroleum coke in coking units - HCBBS Forum
74. Comparison between steam jet pumps and liquid ring vacuum pumps - HCBBS Forum
75. Is it possible to use 20% sodium hydroxide solution and 20% sodium hypochlorite solution for internal protection in vinyl resin fiberglass? - HCBBS Forum
76. Among the five major rearrangement reactions, why are only hexacyclic alkanes and pentacyclic alkanes mentioned? - HCBBS Forum
77. Comprehensive analysis of factors affecting lubricant consumption - HCBBS Forum
78. Everyone has come to watch the excitement - HCBBS Forum
79. Seeking help with knowledge related to mechanical seals - HCBBS Forum
80. 【Daily Question】June 8: Why is the second valve on the wall of the discharge point used to control the rate of catalyst discharge? - HCBBS Forum
81. Suspension slurry metering pump - HCBBS Forum
82. The steam boiler’s steam generation pressure can be lower than the design pressure, but is there a minimum requirement for steam generation pressure? - HCBBS Forum
83. The purpose of posting to communicate - HCBBS Forum
84. One question per day: 6 wealth points for a correct answer, 2 wealth points for participation, Question 215 - HCBBS Forum
85. Regarding the issue of equipment pressure testing, it’s the first time I’ve seen this in all these years - HCBBS Forum
86. Alkaline solution system - HCBBS Forum
87. Solve for the relationship between material viscosity and the flow rate, power consumption, and efficiency of screw pumps and rotor pumps - HCBBS Forum
88. shall be agreed with - HCBBS Forum
89. High pressure difference in the liquid nitrogen cooling tank - HCBBS Forum
90. Plastic hoses resistant to NMP corrosion - HCBBS Forum
91. Eight Viral Mindsets for Graduates in Job Interviews - HCBBS Forum
92. Is it necessary to use sliding supports for the installation of heat exchangers? - HCBBS Forum
93. What to do if you lack motivation - HCBBS Forum
94. Serious question: at a point where pipelines are connected, can a concentrated load or initial displacement be used as a substitute? - HCBBS Forum
95. Selection of pipeline slope - HCBBS Forum
96. Does hot coke react with water? - HCBBS Forum
97. Allowable stress of the material - HCBBS Forum
98. Requirements for posting and communicating in the Fertilizer Technology Exchange Area - HCBBS Forum
99. Can the temperature of superheated steam be increased significantly? - HCBBS Forum
100. Industrial chilled water production - HCBBS Forum