Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – A gas is substance acted upon
Patent
1981-12-17
1984-09-04
Yuen, Henry C.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
A gas is substance acted upon
110245, F22B 102
Patent
active
044690509
ABSTRACT:
A method of operating a fast fluidized bed reactor according to the invention comprises: (1) providing a substantially upright fluidized bed reactor containing a bed of granular material and having an upper and a lower region, the upper region having a cylindrically shaped interior surface; (2) feeding matter to be reacted into the lower region of the reactor; (3) supplying a first stream of pressurized air to the reactor through a plurality of openings in the lower region at a sufficient velocity to fluidize the granular material in the circulating regime, whereby at least a portion of the granular material is continually entrained upward into the upper region; (4) tangentially supplying a second stream of pressurized air to the upper region of the reactor through at least one opening in the cylindrical interior surface of the upper region; (5) maintaining a Swirl number of at least about 0.6 and a Reynolds number of at least about 18,000 in the upper region of the reactor for providing a cyclone of turbulence in the upper region which increases the rate of reaction in the reactor, wherein, at maximum operating capacity for the reactor, the second stream of air constitutes in excess of about 50% of the total pressurized air fed to the reactor; and (6) removing a portion of the granular material and reaction gases from the upper region of the reactor through an exit port situated adjacent to the upper boundary of the cyclone of turbulence, separating the portion of the granular material from the reaction gases and returning the separated granular material to the lower region of the reactor.
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York-Shipley, Inc.
Yuen Henry C.
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