Oxygenate conversion catalyst processing

Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed

Reexamination Certificate

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C502S021000

Reexamination Certificate

active

07439414

ABSTRACT:
Improved processing of spent catalyst from an oxygenate-containing feedstock to olefins conversion process is realized through the employment of a barrier filter to treat a catalyst particle-containing flue gas resulting from a catalyst regenerator. The barrier filter serves to separate the catalyst particles from the flue gas. Catalyst material so recovered can, with or without classifying, subsequently be appropriately recycled and further used.

REFERENCES:
patent: 5464528 (1995-11-01), Owen et al.
patent: 2003/0176753 (2003-09-01), Levin et al.
patent: 2004/0059171 (2004-03-01), Brookhart
patent: 2004/0064006 (2004-04-01), Beech et al.
patent: 2004/0076554 (2004-04-01), Kuechler et al.
patent: 2005/0027152 (2005-02-01), Van Egmond et al.
“The Pall Gas Solid Separation System for the Chemical Process, Refining, and Mineral Industries: Advanced Metal Filters for Critical Gas Solid Separation Problems”, Bulletin GSS-1a by Pall Corporation Fluid Processing Groups, East Hills, New York, 1987.

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