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Title: Stably operating pulse combustor and method

Abstract

A pulse combustor apparatus is described which is adapted to burn either a liquid fuel or a pulverized solid fuel within a preselected volume of the combustion chamber. The combustion process is substantially restricted to an optimum combustion zone in order to attain effective pulse combustion operation. 4 figs.

Inventors:
;
Publication Date:
Research Org.:
Georgia Tech Research Corporation
OSTI Identifier:
7266824
Patent Number(s):
US 4929172; A
Application Number:
PPN: US 7-343084
Assignee:
Georgia Tech Research Corp., Atlanta, GA (United States) ALO; EDB-94-117882
DOE Contract Number:
AS04-85AL31881
Resource Type:
Patent
Resource Relation:
Patent File Date: 25 Apr 1989
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LIQUID FUELS; PULSE COMBUSTION; PULSE COMBUSTORS; DESIGN; PULVERIZED FUELS; COMBUSTION CONTROL; CHEMICAL REACTIONS; COMBUSTION; COMBUSTORS; CONTROL; FUELS; OXIDATION; THERMOCHEMICAL PROCESSES; 421000* - Engineering- Combustion Systems

Citation Formats

Zinn, B.T., and Reiner, D.. Stably operating pulse combustor and method. United States: N. p., 1990. Web.
Zinn, B.T., & Reiner, D.. Stably operating pulse combustor and method. United States.
Zinn, B.T., and Reiner, D.. 1990. "Stably operating pulse combustor and method". United States. doi:.
@article{osti_7266824,
title = {Stably operating pulse combustor and method},
author = {Zinn, B.T. and Reiner, D.},
abstractNote = {A pulse combustor apparatus is described which is adapted to burn either a liquid fuel or a pulverized solid fuel within a preselected volume of the combustion chamber. The combustion process is substantially restricted to an optimum combustion zone in order to attain effective pulse combustion operation. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month = 5
}
  • A pulse combustor apparatus adapted to burn either a liquid fuel or a pulverized solid fuel within a preselected volume of the combustion chamber. The combustion process is substantially restricted to an optimum combustion zone in order to attain effective pulse combustion operation.
  • In one aspect, the invention provides a method of operating a combustor to heat a fuel processor to a desired temperature in a fuel cell system, wherein the fuel processor generates hydrogen (H.sub.2) from a hydrocarbon for reaction within a fuel cell to generate electricity. More particularly, the invention provides a method and select system design features which cooperate to provide a start up mode of operation and a smooth transition from start-up of the combustor and fuel processor to a running mode.
  • A method of operating a combustor to heat a fuel processor in a fuel cell system, in which the fuel processor generates a hydrogen-rich stream a portion of which is consumed in a fuel cell stack and a portion of which is discharged from the fuel cell stack and supplied to the combustor, and wherein first and second streams are supplied to the combustor, the first stream being a hydrocarbon fuel stream and the second stream consisting of said hydrogen-rich stream, the method comprising the steps of monitoring the temperature of the fuel processor; regulating the quantity of the firstmore » stream to the combustor according to the temperature of the fuel processor; and comparing said quantity of said first stream to a predetermined value or range of predetermined values.« less
  • A method is described of operating a combustor comprising the steps of: (a) flowing pressurized air from a source thereof into a liner portion of the combustor through an inlet opening formed in the liner portion; (b) utilizing a first portion of the pressurized air entering the liner portion to cool an interior surface portion of the liner portion; (c) utilizing a second portion of the pressurized air entering the liner portion as combustion air within the liner portion; (d) mixing the combustion air with fuel and burning the fuel-air mixture within the liner portion; and (e) simultaneously controlling themore » cooling of the interior surface portion and the richness of the fuel-air mixture by selectively varying the air inflow through the inlet opening, the step (a) being performed by flowing pressurized air into an upstream end portion of the liner portion, and the method comprising the further steps of forming in the liner portion an additional air inlet opening spaced in a downstream direction from the first-mentioned inlet opening for receiving pressurized air from a source thereof, and varying the air inflow through the additional inlet opening in generally inverse proportion to the air inflow variance through the first-mentioned inlet opening.« less
  • A method is described of operating a fluid bed combustor comprising the steps of: a. vertically staggering a plurality of fluid beds on opposite sides of a divide wall, each fluid bed comprising a combustion bed from which flue gases emerge and a freeboard space immediately above each combustion bed for the passage of the flue gases thereinto; b. transferring the flue gases through openings in the divide wall from one freeboard space directly into an adjacent and more elevated freeboard space; c. accumulating and mixing in each freeboard space the flue gases emitted from each upstream combustion bed, themore » upstream flue gases passing around and over the top of each downstream combustion bed; d. altering the direction of flue gas exiting a freeboard space with respect to its direction entering the same freeboard space by approximately 180/sup 0/; e. whereby the accumulating and mixing of the flue gases as they pass through the combustor provide a generally uniform temperature throughout the freeboard spaces.« less