3675435

Information

• Patent Grant
• 3675435

• References
• Source

• Patent Number

  3,675,435

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1972
  52 years ago

• CPC

  • C07C7/09 - by fractional condensation
  • F25J3/0219 - Refinery gas, cracking gas, coke oven gas, gaseous mixtures containing aliphatic unsaturated CnHm or gaseous mixtures of undefined nature
  • F25J3/0233 - separation of CnHm with 1 carbon atom or more
  • F25J3/0238 - separation of CnHm with 2 carbon atoms or more
  • F25J3/0252 - separation of hydrogen
  • F25J2200/04 - in a dual pressure main column system
  • F25J2200/70 - Refluxing the column with a condensed part of the feed stream
  • F25J2200/76 - Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration cycle
  • F25J2210/06 - Splitting of the feed stream
  • F25J2210/12 - Refinery or petrochemical off-gas
  • F25J2270/02 - Internal refrigeration with liquid vaporising loop
  • F25J2270/06 - with multiple gas expansion loops
  • F25J2270/90 - External refrigeration
  • F25J2290/40 - Vertical layout or arrangement of cold equipments within in the cold box
  • Y02P30/462 - using low temperature distillation

• US Classifications

  • 062 - Refrigeration