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Title: Pressurized fluidized bed reactor

Abstract

A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine.

Inventors:
 [1]
  1. (Karhula, FI)
Publication Date:
Research Org.:
City of Lakeland
OSTI Identifier:
870341
Patent Number(s):
US 5499498
Assignee:
Foster Wheeler Energia Oy (Karhula, FI) NETL
DOE Contract Number:
FC21-91MC27364
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pressurized; fluidized; bed; reactor; fluid; power; plant; contained; pressure; vessel; gas; volume; conduit; supplies; primary; passing; outside; returning; supplied; compressor; third; comprising; hot; discharge; carries; gases; filter; ultimately; turbine; normal; operation; withdrawn; introduced; substantially; continuously; controlled; rate; response; operational; disturbance; flow; conduits; terminated; thereafter; simultaneously; reduced; relief; valves; optionally; air; directly; primary gas; relief valve; gas volume; controlled rate; fluid bed; pressurized fluidized; substantially simultaneously; bed reactor; normal operation; pressure vessel; fluidized bed; power plant; hot gas; pressurized fluid; pressurized gas; pressure relief; gas discharge; substantially continuous; reactor power; substantially continuously; simultaneously reduced; continuously controlled; reactor contained; simultaneously reduce; supplies primary; substantially simultaneous; conduit supplies; /60/

Citation Formats

Isaksson, Juhani. Pressurized fluidized bed reactor. United States: N. p., 1996. Web.
Isaksson, Juhani. Pressurized fluidized bed reactor. United States.
Isaksson, Juhani. 1996. "Pressurized fluidized bed reactor". United States. doi:. https://www.osti.gov/servlets/purl/870341.
@article{osti_870341,
title = {Pressurized fluidized bed reactor},
author = {Isaksson, Juhani},
abstractNote = {A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1996,
month = 1
}

Patent:

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  • A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurizedmore » gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine. 1 fig.« less
  • A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurizedmore » gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine. 1 fig.« less
  • A pressurized fluid bed reactor power plant includes a fluidized bed reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurizedmore » gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine.« less
  • This patent describes a method of operating a gas turbine. It comprises: the steps of forming three separate combustion cells in a single vessel, forming a bed of particulate material including fuel in each of the cells, passing air through each of the beds, the quantity of air passed through two of the cells being sufficient to fluidize the particulate material in their respective beds and promote the combustion of the fuel, and the quantity of the air passed to the other of the cells being insufficient for complete combustion of the fuel but sufficient to generate a combustible off-gas,more » the flue gases from the combustion in the two cells passing through the length of the two cells and entraining a portion of the particulate material before discharging from an outlet in the vessel; discharging the off-gas from another outlet of the vessel, separating the entrained particulate material from the flue gases and from the off-gas, burning the separated off-gas in the presence of the flue gases to raise their temperature, and passing the high temperature gases to a turbine.« less
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