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Title: Pressurized fluidized bed reactor

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 During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the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.
  1. (Karhula, FI)
Issue Date:
OSTI Identifier:
Foster Wheeler Energia Oy (Karhula, FI) NETL
Patent Number(s):
US 5499498
Contract Number:
Research Org:
City of Lakeland
Country of Publication:
United States
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compressor; third; comprising; hot; discharge; carries; gases; filter; ultimately; turbine; normal; operation; withdrawn; introduced; substantially; continuously; controlled; rate; response; operational; disturbance; flow; conduits; terminated; thereafter; simultaneously;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/