Method and arrangement for purifying a carbon-containing adsorption medium
Patent 5405812 Issued on April 11, 1995. Estimated Expiration Date: 
February 16, 2013. 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.
February 16, 2013. 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 2992065 Method of removing sulfur oxides and nitrogen oxides by dry process Process for purifying flue gas Mercury adsorbent carbon molecular sieves and process for removing mercury vapor from gas streams Dust pre-removal method in a dry moving bed type adsorption tower Process for purifying waste gases containing polyhalogenated compounds Patent #: 5260047 InventorAssigneeApplicationNo. 977417 filed on 02/16/1993US Classes:502/34, Gas or vapor treating96/126, With heat exchange means96/130, With means for regenerating solid sorbent96/146, Heat exchanger to regenerate96/150, Movable solid sorbent bed (e.g., fluidized bed, etc.)422/177, Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.422/216, Compact bed of particulate, fluid contact material and means providing gravity flow of material within bed422/219, And means loading contact material into, or unloading contact material from, reactor or means providing internal contact material reservoir423/210, MODIFYING OR REMOVING COMPONENT OF NORMALLY GASEOUS MIXTURE423/240R, Halogenous component423/244.1, Transition metal or compound thereof catalyst502/20, REGENERATING OR REHABILITATING CATALYST OR SORBENT502/56, By heat502/516, Metal contaminant removal502/517Sulfur or sulfur compound removalExaminersPrimary: McFarlane, AnthonyAttorney, Agent or FirmForeign Patent References
International ClassesB01J 020/34B01J 008/08 B01D 050/00 Foreign Application Priority Data1990-08-17 DEAbstractIn a method for purifying a carbon-containing adsorption medium used for treating flue gases within a flue gas scrubbing process the adsorption medium is introduced into an adsorption medium reactor where the adsorption medium adsorbs pollutants from the flue gas. The adsorption medium laden with pollutants is then removed from the adsorption medium reactor and conveyed into a thermal regeneration apparatus. At temperatures of 350° to 650° C. the pollutants are desorbed in the thermal regeneration apparatus, resulting in a desorption gas. In the desorbing step, pollutants in the form of heavy metals are vaporized and pollutants other than heavy metals are released from the adsorption medium and optionally decomposed. The desorption gas is then guided into an adsorption apparatus where the heavy metals are removed from the desorption gas by adsorption. The desorption gas substantially free of heavy metals is subjected to further treatment, preferably is reintroduced into the flue gas scrubbing process upstream of a flue gas scrubbing apparatus.Other References
Field of SearchGas or vapor treatingBy heat Metal contaminant removal Sulfur or sulfur compound removal MODIFYING OR REMOVING COMPONENT OF NORMALLY GASEOUS MIXTURE Gravity flow of sorbent from zone to zone Sweep gas used Nitrogen oxide sorbed Metal or metal containing compound sorbed Mercury sorbed Sulfur dioxide or sulfur trioxide sorbed And regeneration Heat exchanger to regenerate Movable solid sorbent bed (e.g., fluidized bed, etc.) With means for regenerating solid sorbent With heat exchange means And contact regenerating means or means for cleaning an internal surface of the reaction chamber Compact bed of particulate, fluid contact material and means providing gravity flow of material within bed In situ generation of agent other than aldehyde or glycol |
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