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US 5,248,484 AGranted
Attrition reactor system
AssigneeMartin Marietta Energy Systems, Inc.
InventorsCharles D. Scott, Brian H. Davison
Life of this patent
Estimating the term…
Abstract
A reactor vessel for reacting a solid particulate with a liquid reactant has a centrifugal pump in circulatory flow communication with the reactor vessel for providing particulate attrition, resulting in additional fresh surface where the reaction can occur.
Claims5
An attrition reactor system comprising a reactor vessel containing a solid particulate cellulosic substrate and an aqueous hydrolyzing reactant;
- and an attriting means, said attriting means comprising a centrifugal pump consisting essentially of a housing having an internal cavity and a rotor having vanes disposed in said cavity, said centrifugal pump being in circulatory flow communication with said reactor vessel, said centrifugal pump being operable at a speed sufficient to attrit said solid particulate cellulosic substrate sufficiently to react with said aqueous hydrolyzing reactant.
A method for hydrolyzing a solid particulate cellulosic substrate comprising the steps of:
- providing a reactor vessel;
- introducing said solid particulate cellulosic substrate and an aqueous hydrolyzing reactant into said reactor vessel to form a slurry;
- and
- attriting said solid particulate cellulosic substrate using an attriting means, said attriting means comprising a centrifugal pump consisting essentially of a housing having an internal cavity and a rotor having vanes disposed in said cavity, said centrifugal pump being in circulatory flow communication with said reactor vessel,
- said attriting means circulating said slurry through said centrifugal pump and attriting said solid particulate cellulosic substrate sufficiently to react said solid particulate cellulosic substrate with said aqueous hydrolyzing reactant.
2 more elements
A method for hydrolyzing waste paper comprising the steps of:
- providing a reactor vessel;
- introducing into said reactor vessel an aqueous slurry containing shredded waste paper having a surface and a cellulase enzyme for hydrolyzing said shredded waste paper;
- operating said reactor vessel so that a hydrolyzing reaction occurs on said surface of said shredded waste paper;
- and
- attriting said shredded waste paper using an attriting means, said attriting means comprising a centrifugal pump consisting essentially of a housing having an internal cavity and a rotor having vanes disposed in said cavity, said centrifugal pump being in circulatory flow communication with said reactor vessel,
- said attriting means circulating said slurry through said centrifugal pump and attriting said shredded waste paper sufficiently to react said shredded waste paper with said cellulase enzyme.
3 more elements
Dependencies are inferred from the claim text.