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  1. Isobutylene density - HCBBS Forum
  2. 【Daily Question】Theoretical Foundation 2019.7.5 - HCBBS Forum
  3. FRNC-5PC cannot be installed; it shows that a connection to the PCR is not possible - HCBBS Forum
  4. Basic questions on principles of chemical engineering - HCBBS Forum
  5. 【Daily Question】Theoretical Foundation 2020.07.28 - HCBBS Forum
  6. Heat transfer variations in chemical process pipelines of different cross-sections - HCBBS Forum
  7. Equipment (tank train) – where to go? (10) - HCBBS Forum
  8. Where can I find information on the physical properties of glucose? - HCBBS Forum
  9. Does dimethyl ether fall under the category of liquefied hydrocarbons as defined in GB50160-2018 \"Code for Fire Protection Design of Petrochemical Enterprises\"? ? - HCBBS Forum
  10. 【Daily Question】Theoretical Foundation 2020.11.03 - HCBBS Forum
  11. Explanation of each part of the pipeline number - HCBBS Forum
  12. Pressure pipeline - HCBBS Forum
  13. Minimum horizontal distance between buried water supply lines and railways - HCBBS Forum
  14. Relationship between inlet flow rate and molecular weight of centrifugal compressors - HCBBS Forum
  15. PRO Software Science* - HCBBS Forum
  16. The Changqing ethane-to-ethylene project successfully passed the completion acceptance inspection by CNPC - HCBBS Forum
  17. Public tender for the EPC general contract of the wastewater treatment plant for Ningxia Coal Industry’s second-phase 60,000 tons/year polyoxymethylene project - HCBBS Forum
  18. Wanhua Chemical’s first 250,000-ton/year LDPE plant has successfully completed the entire production process and produced qualified products - HCBBS Forum
  19. Principle of gas-phase precooling of ethylene - HCBBS Forum
  20. Regarding the issue of pipeline number boundaries - HCBBS Forum
  21. Daily Question on Automation Theory Knowledge (Question 91) - HCBBS Forum
  22. Introduction to hydrorefining and hydrocracking - HCBBS Forum
  23. Determination of pipe wall thickness - HCBBS Forum
  24. Coal consumption calculation - HCBBS Forum
  25. Inorganic salt eutectic point - HCBBS Forum
  26. Chinese scientists have made new breakthroughs in the conversion of olefins into alkynes - HCBBS Forum
  27. Daily Question on Automation Theory Knowledge (Question 70) - HCBBS Forum
  28. What is the hazardous chemical trichlorosilane? You need to understand these - HCBBS Forum
  29. Vacuum problems in vacuum distillation columns - HCBBS Forum
  30. The liquid phase in a 100-cubic-meter liquefied gas tank has been emptied, and the gauge pressure of the gas phase inside the tank is zero. How can the amount of liquefied gas be calculated? - HCBBS Forum
  31. On the heat of reaction between nitrogen dioxide and water - HCBBS Forum
  32. Seeking advice on burst disc issues with equipment - HCBBS Forum
  33. Design of oil and gas skid-mounted units - HCBBS Forum
  34. Why are there differences in the water quality parameters for feedwater between GB/T12145 and GB/T1576-2018? - HCBBS Forum
  35. Tube, frozen, seeking help - HCBBS Forum
  36. Daily Question on Automation Theory Knowledge (8.29) - HCBBS Forum
  37. How is the length of the straight sections before and after the flow meter determined? - HCBBS Forum
  38. Can double-ended studs be used for EO pipe flange connections? - HCBBS Forum
  39. What is the lowest pumping temperature for dimethyl silicone oil with a viscosity of 500? - HCBBS Forum
  40. Hydrogen chloride distillation - HCBBS Forum
  41. 【Daily Question】Theoretical Foundation 2020.04.03 - HCBBS Forum
  42. 【Common Issues in Haichuan Pipeline Design】No check valve is installed on the nitrogen sealing pipeline of the storage tank - HCBBS Forum
  43. 【Daily Question】Chemical Engineering Principles 505: Measuring Low Hardness (January 11) - HCBBS Forum
  44. Regarding the cost of main materials in the process estimate - HCBBS Forum
  45. Flow rate issue - HCBBS Forum
  46. How to calculate the saturated vapor pressure of a mixture - HCBBS Forum
  47. 【Daily Question】Theoretical Foundation 2019.9.25 - HCBBS Forum
  48. Original by HaiChuan! Wall chart of the chemical industry chain! - HCBBS Forum
  49. One Question per Day in Applied Chemistry 8-5~8-6 - HCBBS Forum
  50. Pipes with temperature difference - HCBBS Forum
  51. Correlation between steam grade and power - HCBBS Forum
  52. 【Daily Question】Theoretical Foundation 2019.11.28 - HCBBS Forum
  53. 【Daily Question】Theoretical Foundation 2019.12.14 - HCBBS Forum
  54. For environmental inspections of liquid ammonia storage tanks, is it required to have a 200 m³ emergency pool? - HCBBS Forum
  55. 【HaiChuan Chemical Project Updates】Jiaxing Petrochemical plans to carry out a technical upgrade project to produce 3 million tons of purified terephthalic acid per year - HCBBS Forum
  56. Calculate the heat of synthesis of ethylenediamine hydrochloride by acid method - HCBBS Forum
  57. 【Common Issues in Haichuan Pipeline Design】Don’t let valve stem handles become obstacles - HCBBS Forum
  58. Is dichloromethane corrosive to PVDF? - HCBBS Forum
  59. On the qualitative assessment of the fire hazard in waste gas and wastewater treatment plants - HCBBS Forum
  60. 【Daily Question】Theoretical Foundation 2020.02.02 - HCBBS Forum
  61. Pre-cooling before LNG cold box - HCBBS Forum
  62. Huanqiu 6 Construction delivered two deethanization towers to CNOOC Deep Sea Development Co., Ltd - HCBBS Forum
  63. Overall location of the sewage treatment plant - HCBBS Forum
  64. A 19-year-old boy was fined and had points deducted for illegally transporting hazardous materials on the spot - HCBBS Forum
  65. Attention, hazardous chemicals enterprises! Guangdong Province launches a special campaign to regulate special operation permits - HCBBS Forum
  66. Questions about liquid nitrogen - HCBBS Forum
  67. What does “EL” mean in the drawing? - HCBBS Forum
  68. Material of electrolyte pipelines for all-vanadium flow batteries - HCBBS Forum
  69. 【HaiChuan Safety Discussion】Hidden Dangers Around Us – How Many Sets of Anti-Static Devices Should Be Installed at the Metering and Sampling Ports of Storage Tanks? - HCBBS Forum
  70. Maleic Anhydride Design Company - HCBBS Forum
  71. Why do the grades of pipes and fittings for socket welding be relatively high? - HCBBS Forum
  72. 【Daily Question】Theoretical Foundation 2020.03.13 - HCBBS Forum
  73. Why are steam pipelines insulated? ? ? - HCBBS Forum
  74. Software for querying the physical properties of organic substances, such as specific heat capacity - HCBBS Forum
  75. New Series in Fine Chemicals for New Fields -- Electronic Chemicals - HCBBS Forum
  76. Pipes of the large outer diameter series are connected to pipes of the small outer diameter series - HCBBS Forum
  77. Properties of ammonia gas - HCBBS Forum
  78. 【Daily Question】Theoretical Foundation 2019.6.24 - HCBBS Forum
  79. What pipeline material should be used for high-concentration sodium hydroxide solutions? - HCBBS Forum
  80. Regarding the efficiency of centrifugal pumps - HCBBS Forum
  81. Questions regarding the GB50160 fire protection standards - HCBBS Forum
  82. Seeking advice on voltage division issues - HCBBS Forum
  83. Vacuum pressure issue - HCBBS Forum
  84. At what pressure in Mpa in the tower will air not enter? - HCBBS Forum
  85. 【Daily Question】Principles of Chemical Engineering 567: Litmus solution turns blue (May 27) - HCBBS Forum
  86. CAD - HCBBS Forum
  87. Saturated sodium chloride absorbs hydrogen chloride gas - HCBBS Forum
  88. Explanation of the calculation sheet for MVR evaporation process in aqueous solutions - HCBBS Forum
  89. Flow velocity of the fluid in the pipeline - HCBBS Forum
  90. There are a few points I don’t understand in the design specifications for oil depots - HCBBS Forum
  91. 【History of Haichuan Chemical Industry】Sixty Years of 14th Chemical Construction Company (Part 2) – Relocation from Yichang, Hubei to Yingcheng, Hubei - HCBBS Forum
  92. Saiding wins the EPC contract for the hydrogen production and SNG co-generation project using coke oven gas at Hebei Fengmei Coking Plant - HCBBS Forum
  93. Explanation of the calculation sheet for MVR two-effect evaporation (co-current) process in aqueous solutions - HCBBS Forum
  94. 45° slope of the storage tank insertion tube - HCBBS Forum
  95. Call for tender for feasibility study report on the launch of the Deep Energy Otogon Phase II project for hydrogen production via water electrolysis to produce SAF - HCBBS Forum
  96. What is the difference between the Feed, Detailed Engineering, and EPC phases? - HCBBS Forum
  97. 【SeaChannel Safety Discussion】The design engineer for ladder A048 should climb it himself - HCBBS Forum
  98. Seek help regarding the gas property coefficient at 0.231 MPa - HCBBS Forum
  99. Winning the bid for the EPC general contract of the purification unit for Xinjiang Shanneng Chemical Co., Ltd.’s 800,000 tons per year coal-to-olefins project in Wucaiwan, Zhundong, under the Five Rings Project - HCBBS Forum
  100. Stored in a chemical warehouse, different substances that can be stored together without any incompatibilities between them – can they be stacked on top of each other in the same stack? - HCBBS Forum
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