| 摘要 |
PCT No. PCT/US 79/00843 Sec. 371 Date Oct. 15, 1979 Sec. 102(e) Date Oct. 15, 1979 PCT Filed Oct. 15, 1979 A combination rotating fluidized bed combustor and rotating fluidized bed heat exchanger particularly adaptable as the combustor and heat exchange unit, respectively, of conventional gas turbine engines is preferably arranged with the combustor nested within the heat exchanger for maximum compactness. The heat exchanger comprises an annular fluidized bed, defined by inner and outer spaced apart coaxial cylindrical, perforated walls, which rotates about the longitudinal axis of the cylinders. The bed is comprised of pulverulent inert particulate material and includes fluid-containing heat exchange tubes passing substantially longitudinally therethrough. Hot gases, such as turbine exhaust gases, enter the bed through the outer perforated wall, heat and fluidize the bed particles, heat the gas, usually compressed air, in the tubes, and exit the bed through the inner perforated wall. The heat exchange tubes direct the compressed air flowing therein from an inlet adjacent the inner perforated wall to an outlet adjacent the outer perforated wall such that the compressed air flows substantially countercurrently to the hot fluidizing gas. The combustor also comprises an annular fluidized bed, defined by inner and outer spaced apart coaxial, cylindrical, perforated walls, which rotates about the longitudinal axis of the cylinders. The heated, compressed air exiting the heat exchanger tubes and solid or liquid fuel enter the combustor bed through the outer perforated wall and fluidize the bed. The air reacts with the fuel within the bed to produce hot combustion gas which exits the bed, together with unreacted compressed air, through the inner perforated wall. When employed with gas turbine engines, the gases exiting the bed are directed into and through the vanes of the gasifier turbine and the power turbine and then into the rotating fluidized bed heat exchanger as the heating and fluidizing medium therefor.
|
