English — Forum #723 (Page 204/642)

1. For a gas-fired heater, with two valves before the burner, would it be better to use one ball valve and one globe valve? - HCBBS Forum
2. 【Daily Topic】【HVAC Version 20160703】 - HCBBS Forum
3. A complete set of quality management tools and quality control methods - HCBBS Forum
4. Plastic equipment PP, plastic pipes PP, plastic valves PP – what is the standard flange specification? - HCBBS Forum
5. Which brand is good for control valves! - HCBBS Forum
6. Is a foundation in engineering mechanics required to work on pressure vessels? - HCBBS Forum
7. Flood control measures for biogas projects - HCBBS Forum
8. Volatile matter of ordinary butyl rubber - HCBBS Forum
9. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； July 4th - HCBBS Forum
10. Pre-hydrogenation of reformation feed - HCBBS Forum
11. 64-bit CAD installation package - HCBBS Forum
12. Can a methanol tank be placed underground? Are there any special requirements? - HCBBS Forum
13. Does methanol decompose on nickel-based catalysts? - HCBBS Forum
14. Seeking help with reboiler leakage issue - HCBBS Forum
15. Relationship between the material of the vertical pipe of the loading crane arm and the type of chemical product - HCBBS Forum
16. 【Coal Chemicals Area】June 2016 Postmaster Salary Payment Thread - HCBBS Forum
17. Is it necessary to install a bypass at the end of the steam pipeline? - HCBBS Forum
18. Sealing type of pneumatic on-off valve - HCBBS Forum
19. Blower air volume calculation - HCBBS Forum
20. When can one apply for the Shanghai First Construction Company? - HCBBS Forum
21. Are there any veterans in the field of aerospace gasification? I’m about to drive out, and I’d like to ask some questions regarding aerospace - HCBBS Forum
22. What kind of tube is HVC? - HCBBS Forum
23. 【Daily Topic】【Engineering Version 20160713】 - HCBBS Forum
24. Occupational Health Daily Question 7.6: Participate for a prize; 3 correct answers and another prize will be given - HCBBS Forum
25. Residue oil is utilized through aromatization - HCBBS Forum
26. Three buckets - HCBBS Forum
27. “During the 13th Five-Year Plan period, coal-to-oil and coal-to-gas production is likely to continue to develop - HCBBS Forum
28. How are the wires connected to the ammeter on the field operation column? - HCBBS Forum
29. Bubble point corrosion of heat exchangers - HCBBS Forum
30. 【Daily Question】July 9, 2016 – Participate to earn +2 wealth； +3 to +10 wealth for correct answers - HCBBS Forum
31. Fisher 6205 locator - HCBBS Forum
32. Regarding circulating water chemicals - HCBBS Forum
33. Announcement of the closing of the 【Taste of Haichuan – Food Lovers of Haichuan Have Power】 event and the winners of the Active Participation Award - HCBBS Forum
34. Gasoline water solubility - HCBBS Forum
35. Everyone, look over here! The [Taste of Haichuan] event has come to an end, but the [Haichuan Delicacies] event is still going on! - HCBBS Forum
36. Calculation of heat transfer coefficient for gas transmission pipelines (Experts, please help) - HCBBS Forum
37. Which tanks for oil storage and transportation require nitrogen sealing, and are there any relevant standards? - HCBBS Forum
38. Reasons for the decrease in lubricant viscosity - HCBBS Forum
39. Question 2, Afternoon Session, Power Cases 2013 - HCBBS Forum
40. When 20 kPaG of chlorine gas containing 1000 PPM of water at 150°C is cooled to 27°C, will water precipitate out? - HCBBS Forum
41. I seek guidance from experts: what should be the negative pressure level in a hydrogen production converter? What is the range of fluctuations, etc.? - HCBBS Forum
42. One certificate for Senior Architectural Design Engineer; the certificate is in hand - HCBBS Forum
43. The double-acting pneumatic control valve exhibits unstable regulation under pressure - HCBBS Forum
44. Please recommend some well-known chemical process package contractors both domestically and internationally - HCBBS Forum
45. Detection and alarm on the tower platform - HCBBS Forum
46. Cajunic acid on stainless steel 304, help needed - HCBBS Forum
47. What causes the torch condensate to be black? - HCBBS Forum
48. Name of the unit that issues the as-built drawing stamp in a general contracting project - HCBBS Forum
49. Pre-cooling rate of low-temperature pipelines - HCBBS Forum
50. 46 Questions on 10 Years of Professional Knowledge - HCBBS Forum
51. No active microorganisms were found under microscopy; what’s going on? - HCBBS Forum
52. The California Hotel - HCBBS Forum
53. Daily practice – please discuss it to enhance theoretical knowledge - HCBBS Forum
54. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 319 [ - HCBBS Forum
55. What are the special requirements for storing methanol tanks underground? - HCBBS Forum
56. Could you explain what concept 3 kPa of pressure represents? - HCBBS Forum
57. Precautions for using heat transfer oil furnaces - HCBBS Forum
58. The fuel gas for the permanent flame in the ammonia synthesis plant’s flare has been changed from liquefied petroleum gas to refined gas - HCBBS Forum
59. The distance from the process package to the basic design. . . . . . - HCBBS Forum
60. 【Daily Topic】【Electrical Edition 20160706】 - HCBBS Forum
61. What exactly is the technology behind gasoline alkaline cleaning? - HCBBS Forum
62. Environmental Protection Daily Post 7.05: Reward for participation, plus 5 more points for answering 3 questions correctly - HCBBS Forum
63. Regarding the color of lubricating oil - HCBBS Forum
64. Methanol reciprocating cycle machine with alcohol - HCBBS Forum
65. 【Daily Topic】【Civil Engineering Version 20160706】 - HCBBS Forum
66. The boiler burner will not ignite - HCBBS Forum
67. Welding of pipes made of different materials - HCBBS Forum
68. Besides being used to produce coal firewood, what else can medium-temperature coal tar be refined into? - HCBBS Forum
69. Does anyone have more detailed information on the various downstream consumption ratios of methanol? I have some basic data - HCBBS Forum
70. Problem with the installation location of the blast disc - HCBBS Forum
71. What to do if the ammonia nitrogen level in the effluent from an A/O system is too high and does not meet the standards? - HCBBS Forum
72. How to separate propylene and propane from carbon dioxide, oxygen, nitrogen, etc - HCBBS Forum
73. I’m a bit confused about the differences between Grade 5 and Grade 4 in Haichuan! Please help! - HCBBS Forum
74. How to manage regulatory compliance - HCBBS Forum
75. 12 engineering and technical principles for accident prevention and control - HCBBS Forum
76. Between Life and Death – A 2016 warning film on safe production of hazardous chemicals - HCBBS Forum
77. Can the differential pressure calculated using an orifice plate be higher than the pressure inside the pipe? - HCBBS Forum
78. How to choose the working fluid for U-tube manometers - HCBBS Forum
79. Issue of changes in extractor efficiency after maintenance – seeking advice from experts - HCBBS Forum
80. 【Daily Question】 2016 07 03 Hydrogenation Sector Fill-in-the-blank question - HCBBS Forum
81. Gasket under the nut - HCBBS Forum
82. The Xuzhou Yi Gao Middle School’s Taikai coke oven gas-to-LNG project has been fully completed - HCBBS Forum
83. Industrial demonstration of methanol production via carbon dioxide hydrogenation was completed in collaboration with the Shanghai Advanced Research Institute - HCBBS Forum
84. Analysis and Forecast of the Supply and Demand Situation of MTBE and Alkylated Gasoline in Our Country - HCBBS Forum
85. What is the white solid found inside pyridine? - HCBBS Forum
86. Does the ammeter show no reading after the water pump starts? - HCBBS Forum
87. If catalytic cracking is changed from a recycle operation to a single-pass conversion, how will the gasoline density change? - HCBBS Forum
88. The secondary sedimentation tank was filled with turbid sludge, and a large amount of fine suspended particles could be seen at the water outlet - HCBBS Forum
89. Selection of LiBr absorption refrigerant - HCBBS Forum
90. Why is the font size different when opening the same CAD file on different computers? - HCBBS Forum
91. Chemical cleaning method for heat exchanger cleaning - HCBBS Forum
92. Urgently need the instruction manual for the Nihon Honsan locator (Chinese version) - HCBBS Forum
93. Sign-in record post from July 5, 2016 - HCBBS Forum
94. What type of level gauge is good? - HCBBS Forum
95. 【Weekly Topic】【Storage & Transportation Version 20160707】 - HCBBS Forum
96. Sulfuric acid storage tank - HCBBS Forum
97. HTFS calculation settings issue - HCBBS Forum
98. Regarding steam flow rate calculation - HCBBS Forum
99. Methanol synthesis system pressure - HCBBS Forum
100. Can it be seen directly in Aspen EDR whether there is turbulence in the tube side or shell side of the heat exchanger? - HCBBS Forum