Method for regenerating physically acting organic scrubbing agents
Patent 4474740 Issued on October 2, 1984. Estimated Expiration Date: 
October 18, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 18, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3658462 Recovery of sulfur dioxide from gas mixtures Recovery of sulfur dioxide from gas mixtures Patent #: 3980760 InventorsAssigneeApplicationNo. 06/434778 filed on 10/18/1982US Classes:423/242.7, Amine423/519.2, Sulfite423/545, Ammonium containing95/235, Sulfur or sulfur containing compound sorbed95/236Carbon dioxide sorbedExaminersPrimary: Heller, Gregory A.Attorney, Agent or FirmInternational ClassesB01D 53/14 (20060101)B01D 53/50 (20060101) Foreign Application Priority Data1981-10-21 DEAbstractMethod and apparatus for regenerating physically acting organic scrubbing agents laden with sulfur dioxide and/or sulfur trioxide and eventually carbon dioxide in the course of a gas purification process. Equipment costs and energy losses are reduced by adding ammonia and, if necessary, water, to the laden scrubbing fluids and then separating the resultant ammonia sulfite and/or ammonia sulfate. Large differences in temperature between the scrubbing steps and the regenerating steps are not needed. A beneficial energy balance results. |
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