Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed
Patent
1994-01-14
1995-08-15
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Fluidized bed
422142, 422219, B01J 812, B01J 828
Patent
active
054417040
DESCRIPTION:
BRIEF SUMMARY
This invention concerns a fluidized bed reactor arrangement for the treatment of fluids by means of solid matter that is present in form of bulk material, preferably in a countercurrent process. The reactor comprises an upper reaction chamber, a lower reaction chamber, and a flow-past base for each reaction chamber. The upper reaction chamber comprises one or more bulk material discharge tubes below its flow-past base for the removal of bulk material from at least the upper reaction chamber. One or more bulk material distribution tubes are provided to load at least one reaction chamber with bulk material. The invention primarily concerns such fluidized bed reactors in which bulk material discharge tubes or bulk material discharge shafts, as well as bulk material distribution tubes or bulk material distribution shafts are provided. Such fluidized bed reactor arrangements can be used for cleaning processes of fluids in which one or more fluid components are adsorbed by the bulk material, but can also be used for catalytic reactions and many other processes. According to this definition, the term "treatment" of fluids includes an extensive array of application possibilities.
Fluidized bed reactor arrangements of the initially mentioned kind are known from DE-883 598-C. In this known fluidized bed reactor arrangement, one single bulk material moves successively through all reaction chambers that are arranged on top of each other. For this purpose, a bulk material distribution bin is arranged above the uppermost reaction chamber and a bulk material collector is arranged below the lowermost reaction chamber. Only very special fluid treatments can be executed with these conventional fluidized bed reactor arrangements since practically no flexibility is provided in regard to the bulk material distribution and the bulk material discharge.
Originating from this fact, the invention is based on the objective of improving fluidized bed reactor arrangements of the initially mentioned kind. It is particularly intended to provide more flexibility in the bulk material distribution and the bulk material discharge to and from reaction chambers that are arranged on top of each other.
This objective in regard to an improved flexibility during the bulk material discharge is attained by guiding at least one bulk material discharge tube for the upper reaction chamber through the lower reaction chamber and its flow-past base, and in regard to an improved flexibility during the bulk material distribution is attained by guiding at least one bulk material distribution tube for the lower reaction chamber through the upper reaction chamber and its flow-past base. Both solutions are preferably combined with each other. The invention is thus based on the idea of arranging tubes or shafts within one or more reaction chambers that are arranged on top of each other and guiding the same through at least one flow-past base that is arranged on the upper and/or lower chamber end in such a way that the bulk material is conveyed from a zone above the concerned reaction chamber and through the reaction chamber--separately from the bulk material located within the reaction chamber--into a zone below this reaction chamber.
The invention has the advantage that bulk materials with different volume flows and/or different prehistory and/or different sorts can be conveyed independent from each other through the reaction chambers that are arranged on top of each other. It is also possible to execute equal treatments simultaneously or chronologically offset to each other within the reaction chambers that are arranged on top of each other. The structural height and the weight of the fluidized bed reactor arrangement according to the invention is comparatively low. It is also possible to arrange relatively large flow-past surfaces within a comparatively small space, in particular on a very small base surface. In the same manner, a comparatively very even bulk material distribution or a very even bulk material discharge to and from the individual reaction cha
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Carpenter Robert
Warden Robert J.
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