Title:
CONVERSION OF SOLID CARBONACEOUS MATTER SUPPLYING MATERIAL
Document Type and Number:
Japanese Patent JPS58181724
Kind Code:
A
Abstract:
In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkaii metal residues are produced, alkali metal constituents are recovered from the particles primarily in the form of water-soluble alkali metal sulphites and bisulphites by treating the particles with a solution of sulphurous acid. The aqueous solution containing water-soluble alkali metal sulphites and bisulphites is then separated from the treated particles, treated to remove soluble aluminium compounds, and then recycled to the gasification process where the alkali metal sulphites and bisulphites serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst.
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Inventors:
ROBAATO JIEI RANGU
Application Number:
JP6044482A
Publication Date:
October 24, 1983
Filing Date:
April 13, 1982
Export Citation:
Assignee:
EXXON RESEARCH ENGINEERING CO
International Classes:
B01J23/02; B01J27/28; B01J38/60; C01D5/14; C01F7/72; C01D5/04; C10J3/00; C10J3/02; C10J3/54; (IPC1-7): B01J27/28; C01D5/04; C01D5/14; C01F7/00; C10J3/00
Attorney, Agent or Firm:
Motohiro Kurauchi