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Title: Process for the production of fuel gas from coal

Abstract

An improved apparatus and process for the conversion of hydrocarbonaceous materials, such as coal, to more valuable gaseous products in a fluidized bed gasification reaction and efficient withdrawal of agglomerated ash from the fluidized bed is disclosed. The improvements are obtained by introducing an oxygen containing gas into the bottom of the fluidized bed through a separate conduit positioned within the center of a nozzle adapted to agglomerate and withdraw the ash from the bottom of the fluidized bed. The conduit extends above the constricted center portion of the nozzle and preferably terminates within and does not extend from the nozzle. In addition to improving ash agglomeration and withdrawal, the present invention prevents sintering and clinkering of the ash in the fluidized bed and permits the efficient recycle of fine material recovered from the product gases by contacting the fines in the fluidized bed with the oxygen as it emanates from the conduit positioned within the withdrawal nozzle. Finally, the present method of oxygen introduction permits the efficient recycle of a portion of the product gases to the reaction zone to increase the reducing properties of the hot product gas.

Inventors:
 [1];  [2];  [3]
  1. Bolingbrook, IL
  2. Chicago, IL
  3. Elmhurst, IL
Issue Date:
Research Org.:
Memphis Light, Gas and Water Div., TN
OSTI Identifier:
864134
Patent Number(s):
4315758
Assignee:
Institute of Gas Technology (Chicago, IL)
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
DOE Contract Number:  
EF-77-C-01-2582
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; production; fuel; gas; coal; improved; apparatus; conversion; hydrocarbonaceous; materials; valuable; gaseous; products; fluidized; bed; gasification; reaction; efficient; withdrawal; agglomerated; ash; disclosed; improvements; obtained; introducing; oxygen; containing; bottom; separate; conduit; positioned; center; nozzle; adapted; agglomerate; withdraw; extends; constricted; portion; preferably; terminates; extend; addition; improving; agglomeration; prevents; sintering; clinkering; permits; recycle; fine; material; recovered; product; gases; contacting; fines; emanates; finally; method; introduction; zone; increase; reducing; properties; hot; hot product; center portion; gasification reaction; hydrocarbonaceous materials; conduit extends; bed gasification; oxygen containing; product gases; product gas; carbonaceous materials; fuel gas; fluidized bed; carbonaceous material; reaction zone; gaseous product; containing gas; improved apparatus; gaseous products; ash agglomeration; agglomerated ash; separate conduit; /48/

Citation Formats

Patel, Jitendra G, Sandstrom, William A, and Tarman, Paul B. Process for the production of fuel gas from coal. United States: N. p., 1982. Web.
Patel, Jitendra G, Sandstrom, William A, & Tarman, Paul B. Process for the production of fuel gas from coal. United States.
Patel, Jitendra G, Sandstrom, William A, and Tarman, Paul B. Fri . "Process for the production of fuel gas from coal". United States. https://www.osti.gov/servlets/purl/864134.
@article{osti_864134,
title = {Process for the production of fuel gas from coal},
author = {Patel, Jitendra G and Sandstrom, William A and Tarman, Paul B},
abstractNote = {An improved apparatus and process for the conversion of hydrocarbonaceous materials, such as coal, to more valuable gaseous products in a fluidized bed gasification reaction and efficient withdrawal of agglomerated ash from the fluidized bed is disclosed. The improvements are obtained by introducing an oxygen containing gas into the bottom of the fluidized bed through a separate conduit positioned within the center of a nozzle adapted to agglomerate and withdraw the ash from the bottom of the fluidized bed. The conduit extends above the constricted center portion of the nozzle and preferably terminates within and does not extend from the nozzle. In addition to improving ash agglomeration and withdrawal, the present invention prevents sintering and clinkering of the ash in the fluidized bed and permits the efficient recycle of fine material recovered from the product gases by contacting the fines in the fluidized bed with the oxygen as it emanates from the conduit positioned within the withdrawal nozzle. Finally, the present method of oxygen introduction permits the efficient recycle of a portion of the product gases to the reaction zone to increase the reducing properties of the hot product gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}