English — Forum #723 (Page 267/642)

1. How to increase the suction in the riser tube - HCBBS Forum
2. Seeking help with issues regarding container wall thickness design - HCBBS Forum
3. 【Daily Question】May 7, 2016 – Participate to earn +2 wealth； +3 to 8 wealth for correct answers - HCBBS Forum
4. Distillation problems of glycidyl methacrylate - HCBBS Forum
5. Ammonia nitrogen issue in domestic wastewater - HCBBS Forum
6. 【Coal Chemicals Area】April 2016 Post about the Distribution of Moderator Salaries - HCBBS Forum
7. 【Daily Question】Chemical Engineering Principles 375: Reference Solution (May 13) - HCBBS Forum
8. 【Purification Daily Question】May 16, 2016 - HCBBS Forum
9. The computer indicates that the WINCC license has expired - HCBBS Forum
10. Help! Which model of centrifugal pump should be chosen for a flow rate of 900 m3/h and a head of 172 m? - HCBBS Forum
11. How to treat wastewater with high salt content, high COD, and strong oxidizing properties? - HCBBS Forum
12. Who can manufacture large ASME LPG spherical storage tanks? - HCBBS Forum
13. Automatic backwashing - HCBBS Forum
14. What is the difference between steam tracing and hot water tracing? - HCBBS Forum
15. Recycling copper from copper catalysts - HCBBS Forum
16. Is there a flowchart or PDF diagram for the Propane Dehydrogenation Oleflex technology? - HCBBS Forum
17. Above the pump’s minimum flow line, are there more gate valves with orifice plates or stop valves with orifice plates? - HCBBS Forum
18. Is the pressure at the first-stage outlet of the cyclic hydrogen compressor high? - HCBBS Forum
19. Actual** moderator report - HCBBS Forum
20. Knowledge on biocompatibility diagnosis, any recommendations? - HCBBS Forum
21. A2O process: How much does soy sauce affect the total nitrogen content in the wastewater from soy sauce factories? - HCBBS Forum
22. What is the current market situation for hydroxyethyl cellulose (HEC) in China? - HCBBS Forum
23. What is the function of the balance tank connected to a triple-effect evaporator? How to select a model - HCBBS Forum
24. Where is the appropriate place to vent the ethylene oxide tank? - HCBBS Forum
25. Do you have any four actions that seem to take care of your computer but actually cause more damage to it? - HCBBS Forum
26. 【Daily Judgment NO.7】 May 15, 2016 - HCBBS Forum
27. 【Q&A Question 018】2016.05.08 - HCBBS Forum
28. What is this? 380 or 220? Star connection or delta connection? - HCBBS Forum
29. Pre-notification on the Convening of the 5th International Symposium on the Promotion and Application of Multi-nozzle Opposed Gasification Technology - HCBBS Forum
30. Regarding the installation of drying rooms in Class A factories - HCBBS Forum
31. Safety Technology Exchange Edition: Daily Question (2016.5.9) - HCBBS Forum
32. How many electrical connections does a motor usually have? - HCBBS Forum
33. DCS network communication - HCBBS Forum
34. Sign-in record post from May 7, 2016 - HCBBS Forum
35. Difference between E+H 50P and 50E - HCBBS Forum
36. The customer mentioned that the brand of the frequency converter is Vecon; what is this brand? - HCBBS Forum
37. Should a safety barrier be added to the simulation card? - HCBBS Forum
38. Explosion protection issues - HCBBS Forum
39. Could I ask for your advice? - HCBBS Forum
40. What to do if the mercury content in the naphtha from the reforming unit is extremely high? - HCBBS Forum
41. Let those who have experienced it offer some insights - HCBBS Forum
42. How long can a fake tooth last? - HCBBS Forum
43. Biomass boilers have broad development prospects, offering energy savings, environmental protection, and cost reduction - HCBBS Forum
44. Pro tips for quickly improving spoken English, offering truly useful advice - HCBBS Forum
45. For the sludge settling ratio SV30 in wastewater treatment plants, what methods or tools are used to extract the mixture? - HCBBS Forum
46. Mechanical seal leakage: no solution available - HCBBS Forum
47. The Encounter of Seas - HCBBS Forum
48. Regarding the LNG sampling system - HCBBS Forum
49. Who can provide professional cleaning companies for plate-and-shell heat exchangers? Thank you - HCBBS Forum
50. What does S.F mean in A194 GR.2H HVY. HEX. S.F NUTS? - HCBBS Forum
51. Regarding the applied toluene recovery process - HCBBS Forum
52. May I ask if air compressors can be used to transfer 98%*ao acid from the metering tank to the mixing tank? - HCBBS Forum
53. Experts in hydrometallurgy, please give some advice - HCBBS Forum
54. Why does the combustion fan in the incinerator use frequency conversion to stabilize the outlet pressure and then adjust the flow rate through dampers? - HCBBS Forum
55. The dry point of naphtha is 153, and the initial boiling point of diesel is 176; so what is the boiling range for those over 20 degrees in between? - HCBBS Forum
56. What is the typical pressure of the heat transfer oil in the shell side of a heat exchanger? - HCBBS Forum
57. On the corrosion resistance of duplex stainless steel - HCBBS Forum
58. What are the costs of producing hydrogen from coker dry gas, methanol, natural gas, and light naphtha respectively? - HCBBS Forum
59. Differences between natural gas wellhead pressure, oil pressure, and casing pressure - HCBBS Forum
60. When you gaze into the void, the void is also gazing at you - HCBBS Forum
61. Help! ! - HCBBS Forum
62. LYWS high-sodium, high-potassium coal with low ash melting point, anti-coking and anti-fusion agent - HCBBS Forum
63. Who knows about Shenhua furnaces? Please give some introduction; it would be better if there are any relevant materials - HCBBS Forum
64. Why does the combustion air blower in the waste liquid incinerator first stabilize the outlet pressure using frequency conversion before adjusting the flow rate through the damper? - HCBBS Forum
65. Regarding metal wound gaskets - HCBBS Forum
66. Toxic gas alarm - HCBBS Forum
67. Base oil production companies - HCBBS Forum
68. 【Q&A Question 025】May 15, 2016 - HCBBS Forum
69. Calibration issues for pressure gauges and temperature measuring instruments - HCBBS Forum
70. After the catalyst is loaded, a catalyst lifting experiment (fluidized bed reaction) needs to be conducted; how is this lifting experiment carried out? - HCBBS Forum
71. Calculation of hydrogen addition to dry gas as raw material in hydrogen production plant - HCBBS Forum
72. Alumina Bayer process leaching experiment - HCBBS Forum
73. 【Weekly Topic】【HVAC Version 20160506】 - HCBBS Forum
74. Regarding skeleton oil seals - HCBBS Forum
75. HG_T 21581-2012 Automatic Control Installation Manual – Pressure Root Valve - HCBBS Forum
76. Steady-state accuracy and regulation ratio of the metering pump - HCBBS Forum
77. 【Micro-fiction】If it’s not your concern, don’t worry about it” - HCBBS Forum
78. Schematic diagram of KSB electric three-way valve ZJSVM-C - HCBBS Forum
79. 【Weekly Topic】【Quality Version 20160509】 - HCBBS Forum
80. How to effectively improve the purity of new hydrogen by removing methane - HCBBS Forum
81. Regarding the digital I/O soft points of DeltaV - HCBBS Forum
82. One Question per Day on Synthetic Ammonia (Series 90) - HCBBS Forum
83. Haichuan Coin Freelancer - HCBBS Forum
84. Regarding some issues in renovation and expansion projects, how should we handle regulatory standards and borderline cases? - HCBBS Forum
85. Seek advice on the distance required between Class A pumps and roads as well as other buildings - HCBBS Forum
86. Polymer polyols AC - HCBBS Forum
87. I hope an expert can tell me what impurities are present in ethylene and benzene produced by factories - HCBBS Forum
88. Why does the water in the cooling circulation pool turn red? - HCBBS Forum
89. Youth, meeting you - HCBBS Forum
90. 【Daily Topic】【Electrical Edition 20160513】 - HCBBS Forum
91. Fried Eggplant Casserole - HCBBS Forum
92. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 516 - HCBBS Forum
93. Ductility of Hastelloy C276 - HCBBS Forum
94. Do you know anything about Watertech control valves in the United States? - HCBBS Forum
95. Help: How can I rate posts by forum members in the app? - HCBBS Forum
96. Application of Invar welding technology - HCBBS Forum
97. 【Daily Question No. 177】May 17, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
98. Looking for packaging equipment manufacturers - HCBBS Forum
99. Has anyone used EPLAN PPE? - HCBBS Forum
100. How are loop identifiers numbered in a P&ID? - HCBBS Forum