Catalytic gasification process with recovery of alkali metal...

Details Catalytic gasification process with recovery of alkali metal... Catalytic gasification process with recovery of alkali metal...

2011-03-01

2011-03-01

Mayes, Melvin C (Department: 1732)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

C423S335000, C423S207000, C423S179000, C423S184000, C048S1970FM, C048S127700, C048S120000, C502S020000, C502S021000, C502S022000, C502S024000, C502S025000

Reexamination Certificate

active

07897126

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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