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Title: Hydrothermal alkali metal catalyst recovery process

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 alkali metal residues are produced, alkali metal constituents are recovered from the particles primarily in the form of water soluble alkali metal formates by treating the particles with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of added carbon monoxide. During the treating process the water insoluble alkali metal compounds comprising the insoluble alkali metal residues are converted into water soluble alkali metal formates. The resultant aqueous solution containing water soluble alkali metal formates is then separated from the treated particles and any insoluble materials formed during the treatment process, and recycled to the gasification process where the alkali metal formates serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. This process permits increased recovery of alkali metal constituents, thereby decreasing the overall cost of the gasification process by reducing the amount of makeup alkali metal compounds necessary.

Inventors:
 [1];  [2]
  1. (Houston, TX)
  2. (Baytown, TX)
Issue Date:
OSTI Identifier:
863364
Patent Number(s):
4157246
Assignee:
Exxon Research & Engineering Co. (Florham Park, NJ) OSTI
DOE Contract Number:  
E(49-18)-2369
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hydrothermal; alkali; metal; catalyst; recovery; process; coal; gasification; operation; similar; conversion; carried; presence; metal-containing; solid; particles; containing; residues; produced; constituents; recovered; primarily; form; water; soluble; formates; treating; calcium; magnesium-containing; compound; temperature; 250; degree; 700; added; carbon; monoxide; insoluble; compounds; comprising; converted; resultant; aqueous; solution; separated; treated; materials; formed; treatment; recycled; serve; portion; comprise; permits; increased; decreasing; overall; cost; reducing; amount; makeup; gasification operation; containing compound; process permits; compounds comprising; process carried; containing alkali; similar conversion; conversion process; particles containing; alkali metal-containing; water soluble; metal compound; metal compounds; metal constituents; solid particles; solution containing; carbon monoxide; alkali metal; aqueous solution; coal gasification; metal catalyst; recovery process; gasification process; coal gas; containing water; metal residues; treatment process; water insoluble; metal-containing catalyst; metal formate; solid particle; materials formed; soluble alkali; metal constituent; catalyst recovery; insoluble material; treating process; hydrothermal alkali; particles contain; soluble material; soluble materials; /48/208/502/999/

Citation Formats

Eakman, James M., and Clavenna, LeRoy R. Hydrothermal alkali metal catalyst recovery process. United States: N. p., 1979. Web.
Eakman, James M., & Clavenna, LeRoy R. Hydrothermal alkali metal catalyst recovery process. United States.
Eakman, James M., and Clavenna, LeRoy R. Mon . "Hydrothermal alkali metal catalyst recovery process". United States. https://www.osti.gov/servlets/purl/863364.
@article{osti_863364,
title = {Hydrothermal alkali metal catalyst recovery process},
author = {Eakman, James M. and Clavenna, LeRoy R.},
abstractNote = {In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles primarily in the form of water soluble alkali metal formates by treating the particles with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of added carbon monoxide. During the treating process the water insoluble alkali metal compounds comprising the insoluble alkali metal residues are converted into water soluble alkali metal formates. The resultant aqueous solution containing water soluble alkali metal formates is then separated from the treated particles and any insoluble materials formed during the treatment process, and recycled to the gasification process where the alkali metal formates serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. This process permits increased recovery of alkali metal constituents, thereby decreasing the overall cost of the gasification process by reducing the amount of makeup alkali metal compounds necessary.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

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