3649190

Information

• Patent Grant
• 3649190

• References
• Source

• Patent Number

  3,649,190

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • C10K1/121 - containing NH3 only (possibly in combination with NH4 salts)
  • B01D53/34 - Chemical or biological purification of waste gases
  • C01B17/167 - Separation
  • C01B17/48 - Sulfur dioxide Sulfurous acid
  • C01B17/60 - Isolation of sulfur dioxide from gases
  • C01B31/20 - Carbon dioxide
  • C01C1/028 - from ammonium sulfate or sulfite
  • C01C1/08 - Preparation of ammonia from nitrogenous organic substances
  • C01C1/10 - Separation of ammonia from ammonia liquors
  • C01C1/12 - Separation of ammonia from gases and vapours
  • C07C51/02 - from salts of carboxylic acids
  • C07C51/412 - by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
  • C10K1/12 - alkaline-reacting including the revival of the used wash liquors

• US Classifications

  • 423 - Chemistry of inorganic compounds