Fast fluidized bed reactor and method of operating the reactor

Details Fast fluidized bed reactor and method of operating the reactor Fast fluidized bed reactor and method of operating the reactor

1984-05-24

1985-10-22

Yuen, Henry C.

Furnaces

Refuse incinerator

Refuse suspended in or supported by a fluid medium

110244, 110263, 122 4D, F23G 700

Patent

active

045481385

ABSTRACT:
A fast fluidized bed reactor, comprising an upright reaction chamber for containing a bed of granular material, the chamber having a cylindrical upper region and a lower region; a feeder for feeding matter into the lower region; apparatus for supplying pressurized air to the reaction chamber to fluidize the granular material in the circulating regime, whereby a portion of the granular material is entrained into the upper region; apparatus for tangentially supplying pressurized air to the upper region, the second stream of air being supplied, and the reactor being constructed, in a manner to provide a Swirl number of at least 0.6 and a Reynolds number of at least 18,000 in the upper region, thereby creating a cyclone of turbulence; apparatus for separating the granular material and the reaction gases exiting from the reaction chamber and returning the separated granular material to the lower region; a second fluidized bed fluidized in the bubbling regime and situated in the lower region adjacent a partition formed in the lower region for partitioning the circulating fluidized bed from the second fluidized bed, the second fluidized bed fluidizing the granular material separated from the reaction gases and the partition being situated to permit a portion of the granular material from the second fluidized bed to overflow into the circulating bed; and a heat exchanger immersed in the second fluidized bed.

REFERENCES:
patent: 3366080 (1968-01-01), Albertson
patent: 3727563 (1973-04-01), Hasselbring et al.
patent: 3907674 (1975-09-01), Roberts et al.
patent: 4060041 (1977-11-01), Sowards
patent: 4184455 (1980-01-01), Talmuld et al.
patent: 4344371 (1982-08-01), Zoschek
patent: 4355601 (1982-10-01), Hattiangadi
patent: 4377119 (1983-03-01), Noack
patent: 4398477 (1983-08-01), Iwasaki
patent: 4419965 (1983-12-01), Garcia-Mollol
patent: 4457289 (1984-07-01), Korenberg

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