3721098

Information

• Patent Grant
• 3721098

• References
• Source

• Patent Number

  3,721,098

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • F25J3/0219 - Refinery gas, cracking gas, coke oven gas, gaseous mixtures containing aliphatic unsaturated CnHm or gaseous mixtures of undefined nature
  • F25J3/0223 - H2/CO mixtures
  • F25J3/0233 - separation of CnHm with 1 carbon atom or more
  • F25J3/0257 - separation of nitrogen
  • F25J3/0276 - separation of H2/N2 mixtures
  • F25J3/0285 - of argon
  • F25J3/0409 - of oxygen
  • F25J3/04218 - Parallel arrangement of the main heat exchange line in cores having different functions
  • F25J3/04303 - Lachmann expansion
  • F25J3/04351 - of nitrogen
  • F25J3/04412 - in a classical double column flowsheet
  • F25J3/04587 - for the NH3 synthesis
  • F25J3/04612 - Heat exchange integration with process streams
  • F25J2200/04 - in a dual pressure main column system
  • F25J2200/50 - using multiple (re-)boiler-condensers at different heights of the column
  • F25J2200/74 - Refluxing the column with at least a part of the partially condensed overhead gas
  • F25J2200/76 - Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration cycle
  • F25J2205/04 - in the feed line
  • F25J2205/30 - using a washing
  • F25J2210/12 - Refinery or petrochemical off-gas
  • F25J2210/20 - H2/N2 mixture
  • F25J2210/42 - Nitrogen
  • F25J2270/02 - Internal refrigeration with liquid vaporising loop
  • F25J2270/04 - Internal refrigeration with work-producing gas expansion loop
  • F25J2270/42 - Quasi-closed internal or closed external nitrogen refrigeration cycle
  • F25J2270/904 - by liquid or gaseous cryogen in an open loop
  • Y10S62/934 - From nitrogen

• US Classifications

  • 062 - Refrigeration
  • 252 - Compositions
  • 423 - Chemistry of inorganic compounds