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Title: Fluidized bed heat exchanger with water cooled air distributor and dust hopper

A fluidized bed heat exchanger is provided in which air is passed through a bed of particulate material containing fuel. A steam-water natural circulation system is provided for heat exchange and the housing of the heat exchanger has a water-wall type construction. Vertical in-bed heat exchange tubes are provided and the air distributor is water-cooled. A water-cooled dust hopper is provided in the housing to collect particulates from the combustion gases and separate the combustion zone from a volume within said housing in which convection heat exchange tubes are provided to extract heat from the exiting combustion gases.
Inventors:
 [1];  [2];  [3];  [4];  [5];  [4];  [6]
  1. (Westport, CT)
  2. (Mamaroneck, NY)
  3. (Bethel, CT)
  4. (Williamsport, PA)
  5. (Montgomery, PA)
  6. (Loganton, PA)
Issue Date:
OSTI Identifier:
864049
Assignee:
Dorr-Oliver Incorporated (Stamford, CT) NREL
Patent Number(s):
US 4301771
Application Number:
06/165,352
Contract Number:
ET-78-C-01-3269
Research Org:
Dorr-Oliver, Inc
Country of Publication:
United States
Language:
English
Subject:
fluidized; bed; heat; exchanger; water; cooled; air; distributor; dust; hopper; provided; passed; particulate; material; containing; fuel; steam-water; natural; circulation; exchange; housing; water-wall; type; construction; vertical; in-bed; tubes; water-cooled; collect; particulates; combustion; gases; separate; zone; volume; convection; extract; exiting; bed heat; containing fuel; cooled air; particulate material; combustion zone; heat exchange; fluidized bed; heat exchanger; combustion gases; material containing; combustion gas; natural circulation; exchange tubes; water cooled; air distributor; exchange tube; convection heat; water natural; extract heat; /122/110/