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Title: Gasification of carbonaceous solids

Abstract

A process and apparatus for converting coal and other carbonaceous solids to an intermediate heating value fuel gas or to a synthesis gas. A stream of entrained pulverized coal is fed into the combustion stage of a three-stage gasifier along with a mixture of oxygen and steam at selected pressure and temperature. The products of the combustion stage pass into the second or quench stage where they are partially cooled and further reacted with water and/or steam. Ash is solidified into small particles and the formation of soot is suppressed by water/steam injections in the quench stage. The design of the quench stage prevents slag from solidifying on the walls. The products from the quench stage pass directly into a heat recovery stage where the products pass through the tube, or tubes, of a single-pass, shell and tube heat exchanger and steam is generated on the shell side and utilized for steam feed requirements of the process.

Inventors:
 [1]
  1. Provo, UT
Issue Date:
Research Org.:
Eyring Research Inst., Provo, Utah (USA)
OSTI Identifier:
862678
Patent Number(s):
3988123
Application Number:
05/605,369
Assignee:
United States of America as represented by United States Energy (Washington, D. C.)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10K - PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
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:  
E(49-18)-1548
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gasification; carbonaceous; solids; process; apparatus; converting; coal; intermediate; heating; value; fuel; gas; synthesis; stream; entrained; pulverized; fed; combustion; stage; three-stage; gasifier; mixture; oxygen; steam; selected; pressure; temperature; products; pass; quench; partially; cooled; reacted; water; ash; solidified; particles; formation; soot; suppressed; injections; design; prevents; slag; solidifying; walls; directly; heat; recovery; tube; tubes; single-pass; shell; exchanger; generated; utilized; feed; requirements; tube heat; steam injection; heating value; carbonaceous solid; heat recovery; pulverized coal; fuel gas; heat exchange; heat exchanger; synthesis gas; carbonaceous solids; converting coal; selected pressure; value fuel; partially cooled; intermediate heat; combustion stage; ducts pass; /48/122/252/

Citation Formats

Coates, Ralph L. Gasification of carbonaceous solids. United States: N. p., 1976. Web.
Coates, Ralph L. Gasification of carbonaceous solids. United States.
Coates, Ralph L. Tue . "Gasification of carbonaceous solids". United States. https://www.osti.gov/servlets/purl/862678.
@article{osti_862678,
title = {Gasification of carbonaceous solids},
author = {Coates, Ralph L},
abstractNote = {A process and apparatus for converting coal and other carbonaceous solids to an intermediate heating value fuel gas or to a synthesis gas. A stream of entrained pulverized coal is fed into the combustion stage of a three-stage gasifier along with a mixture of oxygen and steam at selected pressure and temperature. The products of the combustion stage pass into the second or quench stage where they are partially cooled and further reacted with water and/or steam. Ash is solidified into small particles and the formation of soot is suppressed by water/steam injections in the quench stage. The design of the quench stage prevents slag from solidifying on the walls. The products from the quench stage pass directly into a heat recovery stage where the products pass through the tube, or tubes, of a single-pass, shell and tube heat exchanger and steam is generated on the shell side and utilized for steam feed requirements of the process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {10}
}

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