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Title: Fuel injection staged sectoral combustor for burning low-BTU fuel gas

Abstract

A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone; this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe; swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone; this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surroundingmore » the input from each second stage to provide additional oxidant.« less

Inventors:
 [1]
  1. (Schenectady, NY)
Issue Date:
Research Org.:
General Electric Co
OSTI Identifier:
863820
Patent Number(s):
4253301
Assignee:
General Electric Company (Schenectady, NY) OSTI
DOE Contract Number:  
EX-76-C-01-1806
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fuel; injection; staged; sectoral; combustor; burning; low-btu; gas; high-temperature; coal; turbine; described; comprises; plurality; individual; chambers; chamber; main; zone; pilot; pipe; connected; upstream; surrounds; liquid; source; surrounded; air; supply; swirling; means; provided; additional; preheated; counter-current; coolant; passages; formed; double; wall; arrangement; walls; communicating; swirlers; mix; original; input; provide; efficient; combustion; stages; direct; countercurrent; surrounding; stage; oxidant; burning low-btu; air pipe; combustor comprises; passages formed; supply pipe; original gas; low-btu coal; fuel source; heated air; provide additional; burning zone; fuel gas; gas turbine; fuel injection; double wall; liquid fuel; coal gas; combustor chamber; coolant passages; air supply; sectoral combustor; wall arrangement; efficient combustion; gas pipe; air coolant; staged sectoral; combustor chambers; coolant passage; low-btu fuel; high-temperature combustor; individual combustor; injection staged; btu coal; btu fuel; air input; /60/

Citation Formats

Vogt, Robert L. Fuel injection staged sectoral combustor for burning low-BTU fuel gas. United States: N. p., 1981. Web.
Vogt, Robert L. Fuel injection staged sectoral combustor for burning low-BTU fuel gas. United States.
Vogt, Robert L. Thu . "Fuel injection staged sectoral combustor for burning low-BTU fuel gas". United States. https://www.osti.gov/servlets/purl/863820.
@article{osti_863820,
title = {Fuel injection staged sectoral combustor for burning low-BTU fuel gas},
author = {Vogt, Robert L.},
abstractNote = {A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone; this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe; swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone; this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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