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Title: Grate assembly for fixed-bed coal gasifier

Abstract

A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

Inventors:
 [1]
  1. (Morgantown, WV)
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
868870
Patent Number(s):
5230716
Assignee:
United States of America as represented by United States (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
grate; assembly; fixed-bed; coal; gasifier; moving-bed; type; provided; crushing; agglomerates; solid; material; clinkers; tailoring; radial; distribution; reactant; gases; entering; gasification; reaction; zone; control; downwardly; moving; velocities; combustion; clinker; pinching; vertically; oriented; stationary; bars; angled; supported; upper; surface; rotating; conical; selective; positioning; horizontally; passageways; extending; solids; mounting; radially; scoop; mechanism; near; apex; fixed-bed coal; gasification reaction; reactant gases; coal gasifier; upper surface; vertically oriented; combustion zone; reaction zone; solid material; reactant gas; radially extending; coal gas; bed coal; horizontally oriented; grate assembly; moving solid; /48/126/

Citation Formats

Notestein, John E. Grate assembly for fixed-bed coal gasifier. United States: N. p., 1993. Web.
Notestein, John E. Grate assembly for fixed-bed coal gasifier. United States.
Notestein, John E. Fri . "Grate assembly for fixed-bed coal gasifier". United States. https://www.osti.gov/servlets/purl/868870.
@article{osti_868870,
title = {Grate assembly for fixed-bed coal gasifier},
author = {Notestein, John E.},
abstractNote = {A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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