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  1. 【Daily Question No. 90】March 31, 2019 - HCBBS Forum
  2. 【Daily Question No. 100】April 10, 2018 - HCBBS Forum
  3. Status of the steam main heating gate valves in each unit’s boundary area - HCBBS Forum
  4. 【Daily Question No. 253】September 10, 2018 - HCBBS Forum
  5. Multiple-choice question – Dry gas recovery, wastewater stripping version: One question per day, 12.7 - HCBBS Forum
  6. Practice questions on March 28, 2017; replies will earn 2–6 points (no scoring after the (** is displayed), thank you for your replies) - HCBBS Forum
  7. 【Daily Question No. 88】March 28, 2020 - HCBBS Forum
  8. Enhanced distillation additive – Those who have been in contact with it, please enter - HCBBS Forum
  9. Heavy oil processing - HCBBS Forum
  10. Dear experts, please help! Continuous reforming problem - HCBBS Forum
  11. Review of Clean Diesel Hydrodesulfurization Technologies - HCBBS Forum
  12. Catalytic Coking Reformate Blending Version 20191130 - HCBBS Forum
  13. Who has the catalytic cracking WeChat group? - HCBBS Forum
  14. 【Q&A】Catalytic Coking Reformate Blending Edition 20171122 - HCBBS Forum
  15. What type of pump is used for the external liquid level control in underground tanks? - HCBBS Forum
  16. Practice **questions on March 2, 2017; replies will earn 2–6 points (** no scoring after it is displayed, thank you for your replies) - HCBBS Forum
  17. Drying of the linings inside the two vessels - HCBBS Forum
  18. Density of flue gas desulfurization wastewater - HCBBS Forum
  19. 【Daily Question No. 67】March 8, 2021 - HCBBS Forum
  20. 【Daily Question No. 219】August 7, 2018 - HCBBS Forum
  21. How is the crude oil inlet temperature of the electrodialysis desalination tank adjusted? - HCBBS Forum
  22. I would like to ask experts what causes stable gasoline emulsions? - HCBBS Forum
  23. What are the requirements for the raw materials of needle coke? - HCBBS Forum
  24. Why does the liquefied gas get empty when water is present in it? - HCBBS Forum
  25. Catalytic Coking Reformate Blending Version 20190506 - HCBBS Forum
  26. Desalinated water injection temperature - HCBBS Forum
  27. The cooling efficiency of the electrodeionization wastewater cooler has declined - HCBBS Forum
  28. Effect of arsenic content on platinum reforming catalysts - HCBBS Forum
  29. Let’s share the contract energy management practices of various companies and their outcomes. - HCBBS Forum
  30. Practice questions on September 1, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting). Thank you for your replies - HCBBS Forum
  31. Issues related to the repair of leaks in internal heat transfer tubes - HCBBS Forum
  32. safety valve - HCBBS Forum
  33. It’s Sunday today; let’s make a bubble while staying at our posts - HCBBS Forum
  34. Does stable gasoline contain C4? - HCBBS Forum
  35. Oil adjustment - HCBBS Forum
  36. Catalytic Coking Reformate Blending Version 202003019 - HCBBS Forum
  37. Practice questions on April 27, 2017; replies will earn 2–6 points (** no scoring after it is displayed, thank you for your replies - HCBBS Forum
  38. 【Daily Question】Catalytic Coking Reformate Blending Version 20171126 - HCBBS Forum
  39. Heating furnace - HCBBS Forum
  40. 【Daily Question No. 298】December 15, 2020 - HCBBS Forum
  41. High-sulfur crude oil - HCBBS Forum
  42. Main wind self-protection - HCBBS Forum
  43. What are the circulation processes in high-pressure lubricating oil hydrogenation units? What is the function of each? - HCBBS Forum
  44. 【Daily Question No. 179】June 28, 2019 - HCBBS Forum
  45. 【Daily Question No. 170】June 15, 2020 - HCBBS Forum
  46. Adsorption tank in catalytic liquefied gas refining system - HCBBS Forum
  47. Under fixed reaction conditions, is there a formula to calculate the dry point based on the fractional distillation conditions? - HCBBS Forum
  48. 【Daily Question No. 311】December 28, 2020 - HCBBS Forum
  49. At present, U-tube catalytic cracking has been largely replaced by the riser type; what are the main disadvantages of the former? - HCBBS Forum
  50. 【Daily Question No. 260】September 17, 2018 - HCBBS Forum
  51. 【Haichuan: Lessons from Others】Utilizing process simulation technology to optimize oil refining processes and enhance economic benefits - HCBBS Forum
  52. 【Daily Question】Catalytic Coking Reformate Blending Version 20170920 - HCBBS Forum
  53. What are the leakage issues in the intermediate oil cooler of catalytic units and how are they addressed? - HCBBS Forum
  54. Practice questions on July 1, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting). Thank you for your replies - HCBBS Forum
  55. 【Daily Question】Catalytic Coking Reformate Blending Version 20170418 - HCBBS Forum
  56. Catalytic Coking Reformate Blending Version 20200620 - HCBBS Forum
  57. How to conduct experiments on the effect of demulsifiers in crude oil dehydration? - HCBBS Forum
  58. A question about check valves - HCBBS Forum
  59. Recommended a free HAZOP learning software*~ - HCBBS Forum
  60. Reformation recontact pressure control - HCBBS Forum
  61. 【Daily Question】Catalytic Coking Reformate Blending Version 20180708 - HCBBS Forum
  62. Why must fluorine be mixed with nitrogen before it can be used? - HCBBS Forum
  63. During the material removal and replacement process for the maintenance of aromatic hydrocarbon extraction units, what is the best way to proceed in order to ensure the safe conduct of subsequent maintenance work? - HCBBS Forum
  64. 【Daily Question No. 314】November 11, 2019 - HCBBS Forum
  65. Water circulation method for liquefied gas washing tank - HCBBS Forum
  66. 【Daily Question】Catalytic Coking Reformate Blending Version 20170304 - HCBBS Forum
  67. Multiple-choice question on October 11, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting. Thank you for your replies) - HCBBS Forum
  68. At normal pressure and direct current, gasoline turns reddish-brown in color - HCBBS Forum
  69. Practice questions on April 7, 2017; replies will earn 2–6 points (no scoring after the (** is displayed), thank you for your replies) - HCBBS Forum
  70. Some specifications regarding the installation of emergency shut-off valves in tank areas - HCBBS Forum
  71. 【Daily Question No. 045】February 14, 2018 - HCBBS Forum
  72. Hydrogenation feed blending issue - HCBBS Forum
  73. **Qualification requirements for managers and operators of facilities related to the “two key areas and one major hazard” as set by the General Administration of Work Safety - HCBBS Forum
  74. Clean gasoline - HCBBS Forum
  75. [Q&A] Catalytic Coking Reformate Blending Edition 20180102 - HCBBS Forum
  76. Related to iron oxide desulfurization agents - HCBBS Forum
  77. 【Daily Question】Catalytic Coking Reformate Blending Version 20170908 - HCBBS Forum
  78. A layperson asks about gasoline desulfurization - HCBBS Forum
  79. 【Daily Question】Catalytic Coking Reformate Blending Version 20170306 - HCBBS Forum
  80. When is it appropriate to change from using steam generated by the slurry steam generator for heating to using water, and should this be done before or after injecting the raw material? - HCBBS Forum
  81. 【Daily Question】Catalytic Coking Reformate Blending Version 20180711 - HCBBS Forum
  82. What are the reasons for poor cooling efficiency in the vent water tank of a delayed coking unit? - HCBBS Forum
  83. Catalytic Coking Reformate Blending Version 20190404 - HCBBS Forum
  84. 【Daily Question No. 193】July 12, 2019 - HCBBS Forum
  85. 【Daily Question No. 71】March 12, 2019 - HCBBS Forum
  86. Have you come across nitrate-free cetane improvers? - HCBBS Forum
  87. Practice questions on June 21, 2017; replies will earn 0–6 points (no scoring for replies sent more than 1 day after posting). Thank you for your replies - HCBBS Forum
  88. At which step does the continuous reforming regeneration cycle begin? - HCBBS Forum
  89. Vacuum tower steam ejector - HCBBS Forum
  90. Can the fuel consumption of a heating furnace be determined without knowing the heat load? - HCBBS Forum
  91. 【Daily Question No. 202】July 21, 2019 - HCBBS Forum
  92. Discussion on the reuse of lubricants from used generating units - HCBBS Forum
  93. 【Daily Question No. 257】September 15, 2019 - HCBBS Forum
  94. 【Daily Question No. 274】October 2, 2019 - HCBBS Forum
  95. Problem of blocked exhaust seal vent pipe in catalytic unit - HCBBS Forum
  96. Practice **questions on March 25, 2017; replies will earn 2–6 points (** no scoring after it is displayed, thank you for your replies) - HCBBS Forum
  97. Reformation chlorine injection issue - HCBBS Forum
  98. 63. What is critical speed? - HCBBS Forum
  99. What is the impact of the steam amount atomized by the nozzle on the cracking of the feedstock? - HCBBS Forum
  100. Did Typhoon Anbin have a significant impact on your facilities? - HCBBS Forum
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