Catalytic Gasification Process with Recovery of Alkali Metal from Char

a gasification process and alkali metal technology, applied in the field of catalytic gasification process, can solve the problems of substantially insoluble alkali metal compound in water and has little effect as gasification catalyst, and achieve the effect of reducing the amount of makeup catalyst required
US20090165383A1Inactive Publication Date: 2009-07-02SURE CHAMPION INVESTMENT LTD
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
SURE CHAMPION INVESTMENT LTD
Publication Date
2009-07-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

Processes are described for the extraction and recovery of alkali metal from the char that results from catalytic gasification of a carbonaceous material. Among other steps, the processes of the invention include a hydrothermal leaching step in which a slurry of insoluble particulate comprising insoluble alkali metal compounds is treated with carbon dioxide and steam at elevated temperatures and pressures to effect the conversion of insoluble alkali metal compounds to soluble alkali metal compounds. Further, processes are described for the catalytic gasification of a carbonaceous material where a substantial portion of alkali metal is extracted and recovered from the char that results from the catalytic gasification process.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority under 35 U.S.C. §119 from U.S. Provisional Application Ser. No. 61 / 017,293 (filed Dec. 28, 2007), the disclosure of which is incorporated by reference herein for all purposes as if fully set forth.

[0002] This application is related to commonly owned U.S. application Ser. No. 11 / 421,511, filed Jun. 1, 2006, entitled “CATALYTIC STEAM GASIFICATION PROCESS WITH RECOVERY AND RECYCLE OF ALKALI METAL COMPOUNDS”; U.S. application Ser. No. ______, (filed concurrently herewith), entitled “CATALYTIC GASIFICATION PROCESS WITH RECOVERY OF ALKALI METAL FROM CHAR” (attorney docket no. FN-0014 US NP1); U.S. application Ser. No. ______, (filed concurrently herewith), entitled “CATALYTIC GASIFICATION PROCESS WITH RECOVERY OF ALKALI METAL FROM CHAR” (attorney docket no. FN-0015 US NP1); and U.S. application Ser. No. ______, (filed concurrently herewith), entitled “CATALYTIC GASIFICATION PROCESS WITH RECOVERY OF ALKALI METAL F...

Claims

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