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  1. Typical chemical processes (summary) - HCBBS Forum
  2. 【Daily Question】Theoretical Foundation 2020.10.14 - HCBBS Forum
  3. What do Vr and Q in (5.7) represent respectively? - HCBBS Forum
  4. TSG21-2016: Could someone please share the Word version? - HCBBS Forum
  5. Liquefaction of ammonia - HCBBS Forum
  6. Late reporting? Late reporting! Delayed reporting of Shandong gold mine accident led to serious consequences - HCBBS Forum
  7. Concentration of dilute hydrochloric acid - HCBBS Forum
  8. How should screw compressors and centrifuges be used in combination? - HCBBS Forum
  9. 【Daily Question】Theoretical Foundation 2021.02.08 - HCBBS Forum
  10. Who has the book \"ANSYS Analysis and Strength Calculation of Pressure Vessels\" along with its examples? Please send it to me; I want to learn it on my own. Thank you, experts. - HCBBS Forum
  11. May I ask, should the combustible and toxic gas alarm controller be placed in the DCS cabinet room? - HCBBS Forum
  12. 【Daily Question】Theoretical Foundation 2020.05.13 - HCBBS Forum
  13. 【Daily Question】Theoretical Foundation 2020.08.17 - HCBBS Forum
  14. Emergency shut-off valve at the base of the storage tank - HCBBS Forum
  15. 【Daily Question】Theoretical Foundation 2020.09.21 - HCBBS Forum
  16. 【Daily Question】Theoretical Foundation 2020.05.05 - HCBBS Forum
  17. An overview of the dominant chemical processing equipment - HCBBS Forum
  18. What safety precautions should be taken when transporting three types of hazardous materials? The following four points need attention - HCBBS Forum
  19. How to optimize molecular structure, taking the benzene molecule C6H6 as an example. - HCBBS Forum
  20. Why is there no change in manganese content in the raffinate after 12 stages of counter-current extraction using P204 in the laboratory simulation? - HCBBS Forum
  21. Could some expert help me figure out this issue regarding the conversion values of smoke emissions? Thank you!! - HCBBS Forum
  22. In a sodium hydroxide solution with a pH of around 13, there is also sodium chloride present (6,000 PPM of chloride ions). The temperature is 110 degrees. What material should be chosen? - HCBBS Forum
  23. Seeking help with distillation tower operation - HCBBS Forum
  24. Is the data in this chemical engineering handbook incorrect? - HCBBS Forum
  25. The deep cryogenic separation unit for carbon monoxide presents problems during use due to immature processes and inadequate technology - HCBBS Forum
  26. Can reclaimed water be connected to fresh water pipes? - HCBBS Forum
  27. Sludge dehydration complete set of equipment - HCBBS Forum
  28. 【Daily Question】Theoretical Foundation 2020.08.24 - HCBBS Forum
  29. 37% formalin solution - HCBBS Forum
  30. How to display the stem table in Aspen V11? - HCBBS Forum
  31. Water area exploration - HCBBS Forum
  32. An inspection team from the Guangdong Provincial Work Safety Committee conducted a surprise inspection of the safety production practices related to hazardous chemicals - HCBBS Forum
  33. 【Daily Question】Theoretical Foundation 2020.05.27 - HCBBS Forum
  34. Why is the vapor pressure calculated using Antoine’s equation different from that found in databases? - HCBBS Forum
  35. 【Daily Question】Theoretical Foundation 2020.08.04 - HCBBS Forum
  36. 【Daily Question】Theoretical Foundation 2020.05.08 - HCBBS Forum
  37. 【Daily Question】Theoretical Foundation 2020.08.25 - HCBBS Forum
  38. On the non-destructive testing of fillet welds in pressure pipelines - HCBBS Forum
  39. 【Daily Question】Theoretical Foundation 2020.10.10 - HCBBS Forum
  40. What tables are needed for instrument operation and maintenance? - HCBBS Forum
  41. 【Daily Question】Theoretical Foundation 2021.04.22 - HCBBS Forum
  42. Methods of loading liquid nitrogen, liquid oxygen, and liquid argon from air separation plants - HCBBS Forum
  43. Help: What is the state of sodium sulfate in concentrated sulfuric acid? - HCBBS Forum
  44. 【Daily Question】Theoretical Foundation 2020.09.12 - HCBBS Forum
  45. 【Daily Question】Theoretical Foundation 2020.06.23 - HCBBS Forum
  46. What is the function of a water seal tank? - HCBBS Forum
  47. I recommend a practical HAZOP software - HCBBS Forum
  48. Value of heat transfer coefficient during process design - HCBBS Forum
  49. 【Daily Question】Theoretical Foundation 2020.09.26 - HCBBS Forum
  50. The font on the drawing appears garbled - HCBBS Forum
  51. Is it true that internal diffusion necessarily occurs in porous materials? Does internal diffusion not exist in non-porous materials? - HCBBS Forum
  52. What software was used to create the image below? - HCBBS Forum
  53. Temperature of the secondary steam in MVR low-temperature evaporation - HCBBS Forum
  54. High-risk projects and design qualifications - HCBBS Forum
  55. This isn’t scientific – two alkaline solutions mixed together should actually turn into an acidic substance - HCBBS Forum
  56. 【Daily Question】Theoretical Foundation 2020.06.04 - HCBBS Forum
  57. 【Daily Question】Theoretical Foundation 2020.08.22 - HCBBS Forum
  58. Customs declaration procedures for the export of chemical hazardous goods - HCBBS Forum
  59. 【Daily Question】Theoretical Foundation 2020.07.06 - HCBBS Forum
  60. Give examples to illustrate the differences between parallel reactions, concurrent reactions, and sequential reactions - HCBBS Forum
  61. 【Daily Question】Theoretical Foundation 2021.1.25 - HCBBS Forum
  62. Animation of the plant design for the production of acetone via isopropanol dehydrogenation - HCBBS Forum
  63. Logistics channel, passing through the firewall - HCBBS Forum
  64. 【Daily Question】Theoretical Foundation 2021.1.26 - HCBBS Forum
  65. Dear experts: Our company plans to install a new set of high-pressure equipment. The process requires a temperature of 150 tons, and liquid materials are to be added in stages during the high-pressure reaction process of 4–5 kilograms. How can we ensure safe material feeding? - HCBBS Forum
  66. 【Daily Question】Theoretical Foundation 2020.08.23 - HCBBS Forum
  67. Corrosion, help with document download - HCBBS Forum
  68. For pressure vessels with positive pressure, if both the upper and lower end caps are connected using flanges, what is the typical required thickness for those flanges? - HCBBS Forum
  69. Regarding the drying of bacterial strains - HCBBS Forum
  70. 【Daily Question】Theoretical Foundation 2020.12.05 - HCBBS Forum
  71. What to do if the distance between a Class A factory building and the road edge does not comply with building codes? - HCBBS Forum
  72. How to handle liquid in the exhaust gas absorption system - HCBBS Forum
  73. Installation of storage tank breather valves/pressure relief manholes - HCBBS Forum
  74. Operating procedures for extraction centrifuges - HCBBS Forum
  75. For a pure substance, at a certain external atmospheric pressure, the boiling point should be a constant value, right? - HCBBS Forum
  76. 【Daily Question】Theoretical Foundation 2021.03.15 - HCBBS Forum
  77. Standard diameter of 90-degree elbows in pneumatic conveying systems - HCBBS Forum
  78. 【Daily Question】Theoretical Foundation 2020.07.18 - HCBBS Forum
  79. Is the temperature rise the same for different gases after compression? - HCBBS Forum
  80. What type should be used for the liquid level control in a 2-cubic-meter hermetically sealed filtration tank? - HCBBS Forum
  81. 【Daily Question】Theoretical Foundation 2020.10.13 - HCBBS Forum
  82. Animated video: 37 principles of chemical reactions and their dangers – Match combustion. - HCBBS Forum
  83. How is the mixed salt handled after salt extraction in a coking plant? - HCBBS Forum
  84. 70m? Design of heating coil in maleic anhydride storage tank - HCBBS Forum
  85. Vacuum pump calculation table - HCBBS Forum
  86. 【Daily Question】Theoretical Foundation 2020.06.07 - HCBBS Forum
  87. May I ask, how are 0.65, 0.04, and 0.34 derived? - HCBBS Forum
  88. ““Interfacial film heat transfer coefficient for vapor condensation outside a vertical tube” source - HCBBS Forum
  89. 【Daily Question】Theoretical Foundation 2020.09.28 - HCBBS Forum
  90. Solubility - HCBBS Forum
  91. How to extinguish fires involving hazardous chemicals? Varies by nature - HCBBS Forum
  92. No downloads available after points deduction - HCBBS Forum
  93. Calculation of the required net positive suction head for centrifugal pumps - HCBBS Forum
  94. Some metals experience a decrease in melting point after being oxidized to oxides. Is it possible to predict it? What is the basis for the prediction? - HCBBS Forum
  95. Pressure vessel component calculation software - HCBBS Forum
  96. A comprehensive list of 60 petrochemical and chemical engineering design institutes in China! Which one is the best? - HCBBS Forum
  97. Is this considered a metal expansion joint? - HCBBS Forum
  98. Chemical industry beginners don’t understand why vacuum needs to be created in the second-effect evaporation process - HCBBS Forum
  99. Why do ASPEN simulations show temperatures at the bottom of conventional distillation columns to be over 4000 degrees? - HCBBS Forum
  100. 【Daily Question】Theoretical Foundation 2020.06.12 - HCBBS Forum
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