3572046

Information

• Patent Grant
• 3572046

• References
• Source

• Patent Number

  3,572,046

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1971
  53 years ago

• CPC

  • C01B3/506 - at low temperatures
  • C01B3/025 - Preparation or purification of gas mixtures for ammonia synthesis
  • C01B3/38 - using catalysts
  • C01B3/386 - Catalytic partial combustion
  • 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
  • F25J3/0276 - separation of H2/N2 mixtures
  • C01B2203/0233 - the reforming step being a steam reforming step
  • C01B2203/0244 - the reforming step being an autothermal reforming step
  • C01B2203/0288 - containing two CO-shift steps
  • C01B2203/0294 - containing three or more CO-shift steps
  • C01B2203/0415 - Purification by absorption in liquids
  • C01B2203/046 - Purification by cryogenic separation
  • C01B2203/0475 - the impurety being carbon dioxide
  • C01B2203/0495 - the impurety being water
  • C01B2203/068 - Ammonia synthesis
  • C01B2203/0811 - by combustion of fuel
  • C01B2203/0844 - the non-combustive exothermic reaction being another reforming reaction as defined in groups C01B2203/02 - C01B2203/0294
  • C01B2203/0883 - by indirect heat exchange
  • C01B2203/0894 - Generation of steam
  • C01B2203/1047 - Group VIII metal catalysts
  • C01B2203/1052 - Nickel or cobalt catalysts
  • C01B2203/1076 - Copper or zinc-based catalysts
  • C01B2203/1241 - Natural gas or methane
  • C01B2203/1258 - Pre-treatment of the feed
  • C01B2203/127 - Catalytic desulfurisation
  • C01B2203/143 - Three or more reforming, decomposition or partial oxidation steps in series
  • C01B2203/147 - Three or more purification steps in series
  • C01B2203/82 - Several process steps of C01B2203/02 - C01B2203/08 integrated into a single apparatus
  • F25J2200/02 - in a single pressure main column system
  • F25J2200/80 - using integrated mass and heat exchange
  • F25J2210/20 - H2/N2 mixture
  • F25J2240/02 - Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion)
  • Y10S62/934 - From nitrogen

• US Classifications

  • 062 - Refrigeration