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Title: Oxidation of coal-water slurry feed to hydrogasifier

Abstract

An aqueous coal slurry is preheated, subjected to partial oxidation and vaporization by injection of high pressure oxygen and is introduced into a top section of a hydrogasifier in direct contact with hot methane-containing effluent gases where vaporization of the slurry is completed. The resulting solids are reacted in the hydrogasifier and the combined gases and vapors are withdrawn and subjected to purification and methanation to provide pipeline gas. The amount of oxygen injected into the slurry is controlled to provide the proper thermal balance whereby all of the water in the slurry can be evaporated in contact with the hot effluent gases from the hydrogasifier.

Inventors:
 [1]
  1. Lincolnwood, IL
Issue Date:
OSTI Identifier:
862539
Patent Number(s):
3957460
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10J - PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
DOE Contract Number:  
OCR2208
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
oxidation; coal-water; slurry; feed; hydrogasifier; aqueous; coal; preheated; subjected; partial; vaporization; injection; pressure; oxygen; introduced; top; section; direct; contact; hot; methane-containing; effluent; gases; completed; resulting; solids; reacted; combined; vapors; withdrawn; purification; methanation; provide; pipeline; gas; amount; injected; controlled; proper; thermal; balance; whereby; water; evaporated; pressure oxygen; water slurry; coal-water slurry; partial oxidation; direct contact; coal slurry; effluent gas; slurry feed; resulting solid; resulting solids; combined gas; top section; thermal balance; aqueous coal; /48/201/518/

Citation Formats

Lee, Bernard S. Oxidation of coal-water slurry feed to hydrogasifier. United States: N. p., 1976. Web.
Lee, Bernard S. Oxidation of coal-water slurry feed to hydrogasifier. United States.
Lee, Bernard S. Thu . "Oxidation of coal-water slurry feed to hydrogasifier". United States. https://www.osti.gov/servlets/purl/862539.
@article{osti_862539,
title = {Oxidation of coal-water slurry feed to hydrogasifier},
author = {Lee, Bernard S},
abstractNote = {An aqueous coal slurry is preheated, subjected to partial oxidation and vaporization by injection of high pressure oxygen and is introduced into a top section of a hydrogasifier in direct contact with hot methane-containing effluent gases where vaporization of the slurry is completed. The resulting solids are reacted in the hydrogasifier and the combined gases and vapors are withdrawn and subjected to purification and methanation to provide pipeline gas. The amount of oxygen injected into the slurry is controlled to provide the proper thermal balance whereby all of the water in the slurry can be evaporated in contact with the hot effluent gases from the hydrogasifier.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

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