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Title: Alkali metal recovery from carbonaceous material conversion 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 in the gasifier or similar reaction zone, alkali metal constitutents are recovered from the particles by withdrawing and passing the particles from the reaction zone to an alkali metal recovery zone in the substantial absence of molecular oxygen and treating the particles in the recovery zone with water or an aqueous solution in the substantial absence of molecular oxygen. The solution formed by treating the particles in the recovery zone will contain water-soluble alkali metal constituents and is recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preventing contact of the particles with oxygen as they are withdrawn from the reaction zone and during treatment in the recovery zone avoids the formation of undesirable alkali metal constituents in the aqueous solution produced in the recovery zone and insures maximum recovery of water-soluble alkali metal constituents from the alkali metal residues.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Seabrook, TX)
  2. (Baytown, TX)
  3. (Fanwood, NJ)
  4. (Galveston, TX)
Issue Date:
OSTI Identifier:
863531
Patent Number(s):
4193771
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:
alkali; metal; recovery; carbonaceous; material; conversion; process; coal; gasification; operation; similar; carried; presence; metal-containing; catalyst; solid; particles; containing; residues; produced; gasifier; reaction; zone; constitutents; recovered; withdrawing; passing; substantial; absence; molecular; oxygen; treating; water; aqueous; solution; formed; contain; water-soluble; constituents; recycled; serve; portion; comprise; preventing; contact; withdrawn; treatment; avoids; formation; undesirable; insures; maximum; metal recovery; gasification operation; process carried; containing alkali; similar conversion; water-soluble alkali; conversion process; particles containing; alkali metal-containing; metal constituents; solid particles; alkali metal; aqueous solution; carbonaceous material; reaction zone; coal gasification; coal gas; metal residues; metal-containing catalyst; molecular oxygen; solid particle; solution form; soluble alkali; substantial absence; metal constituent; constituents serve; particles contain; material conversion; /48/208/423/502/

Citation Formats

Sharp, David W., Clavenna, LeRoy R., Gorbaty, Martin L., and Tsou, Joe M. Alkali metal recovery from carbonaceous material conversion process. United States: N. p., 1980. Web.
Sharp, David W., Clavenna, LeRoy R., Gorbaty, Martin L., & Tsou, Joe M. Alkali metal recovery from carbonaceous material conversion process. United States.
Sharp, David W., Clavenna, LeRoy R., Gorbaty, Martin L., and Tsou, Joe M. Tue . "Alkali metal recovery from carbonaceous material conversion process". United States. https://www.osti.gov/servlets/purl/863531.
@article{osti_863531,
title = {Alkali metal recovery from carbonaceous material conversion process},
author = {Sharp, David W. and Clavenna, LeRoy R. and Gorbaty, Martin L. and Tsou, Joe M.},
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 in the gasifier or similar reaction zone, alkali metal constitutents are recovered from the particles by withdrawing and passing the particles from the reaction zone to an alkali metal recovery zone in the substantial absence of molecular oxygen and treating the particles in the recovery zone with water or an aqueous solution in the substantial absence of molecular oxygen. The solution formed by treating the particles in the recovery zone will contain water-soluble alkali metal constituents and is recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preventing contact of the particles with oxygen as they are withdrawn from the reaction zone and during treatment in the recovery zone avoids the formation of undesirable alkali metal constituents in the aqueous solution produced in the recovery zone and insures maximum recovery of water-soluble alkali metal constituents from the alkali metal residues.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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