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Title: Process for reducing sulfur in coal char

Abstract

Coal is gasified in the presence of a small but effective amount of alkaline earth oxide, hydroxide or carbonate to yield a char fraction depleted in sulfur. Gases produced during the reaction are enriched in sulfur compounds and the alkaline earth compound remains in the char fraction as an alkaline earth oxide. The char is suitable for fuel use, as in a power plant, and during combustion of the char the alkaline earth oxide reacts with at least a portion of the sulfur oxides produced from the residual sulfur contained in the char to further lower the sulfur content of the combustion gases.

Inventors:
 [1];  [2];  [1];  [3]
  1. Pittsburgh, PA
  2. Coraopolis, PA
  3. Venetia, PA
Issue Date:
Research Org.:
BUREAU OF MINES
OSTI Identifier:
862599
Patent Number(s):
3970434
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
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; reducing; sulfur; coal; char; gasified; presence; effective; amount; alkaline; earth; oxide; hydroxide; carbonate; yield; fraction; depleted; gases; produced; reaction; enriched; compounds; compound; remains; suitable; fuel; power; plant; combustion; reacts; portion; oxides; residual; contained; content; sulfur oxide; sulfur oxides; earth oxide; sulfur content; effective amount; alkaline earth; combustion gases; power plant; combustion gas; sulfur compounds; gases produced; earth compound; coal char; reducing sulfur; oxides produced; sulfur compound; /44/48/201/252/

Citation Formats

Gasior, Stanley J, Forney, Albert J, Haynes, William P, and Kenny, Richard F. Process for reducing sulfur in coal char. United States: N. p., 1976. Web.
Gasior, Stanley J, Forney, Albert J, Haynes, William P, & Kenny, Richard F. Process for reducing sulfur in coal char. United States.
Gasior, Stanley J, Forney, Albert J, Haynes, William P, and Kenny, Richard F. Tue . "Process for reducing sulfur in coal char". United States. https://www.osti.gov/servlets/purl/862599.
@article{osti_862599,
title = {Process for reducing sulfur in coal char},
author = {Gasior, Stanley J and Forney, Albert J and Haynes, William P and Kenny, Richard F},
abstractNote = {Coal is gasified in the presence of a small but effective amount of alkaline earth oxide, hydroxide or carbonate to yield a char fraction depleted in sulfur. Gases produced during the reaction are enriched in sulfur compounds and the alkaline earth compound remains in the char fraction as an alkaline earth oxide. The char is suitable for fuel use, as in a power plant, and during combustion of the char the alkaline earth oxide reacts with at least a portion of the sulfur oxides produced from the residual sulfur contained in the char to further lower the sulfur content of the combustion gases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {7}
}

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