Process for handling catalyst from an oxygenate to olefin reaction
AssigneeExxonMobile Chemical Patents Inc.
InventorsJames Harding Beech, Jr., Michael Peter Nicoletti, David Ritchie Lumgair, Jr.
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Abstract
The present invention is a process for removing catalyst fines from an effluent stream in an oxygenate to olefin process. Specifically, the catalyst fines in the effluent stream are separated from the effluent stream. Then the carbonaceous deposits are removed from the catalyst fines by incineration.
Claims58
A process for separating and disposing of catalyst fines in an oxygenate to olefins reaction system, the process comprising the steps of
- (a) converting oxygenates to olefins in a reactor in the presence of a catalyst having carbonaceous deposits maintained at an optimum level by a catalyst regeneration system;
- (b) withdrawing from the reactor an effluent stream comprising the olefins, the effluent stream being entrained with a portion of the catalyst in the form of catalyst fines having carbonaceous deposits;
- (c) separating the catalyst fines from the effluent stream by contacting the effluent stream with a liquid quench medium to produce a catalyst containing stream;
- (d) incinerating in an incinerator the carbonaceous deposits that are on the catalyst fines in the catalyst containing stream, said incinerator comprising a regenerator used in said catalyst regeneration system;
- and
- (e) removing said catalyst fines from said regenerator without returning said catalyst fines to said reactor.
A process of separating and disposing of catalyst fines in an oxygenate to olefins reaction system, the process comprising the steps of:
- (a) converting oxygenates to olefins in a reactor in the presence of catalyst particles which contain carbonaceous deposits maintained at an optimum level by a catalyst regeneration system;
- (b) separating the catalyst particles from the effluent stream comprising olefin product and water, the effluent stream being entrained with catalyst fines having carbonaceous deposits;
- (c) separating the catalyst fines from the olefin product by contacting the catalyst fines with a quench medium to produce a dilute fines stream;
- (d) concentrating the dilute fines stream to produce a concentrated fines stream;
- (e) removing in an incinerator at least a portion of the carbonaceous deposits from the catalyst fines from the concentrated fines stream, said incinerator comprising a regenerator used in said catalyst regeneration system;
- and
- (f) removing said catalyst fines from said regenerator without returning said catalyst fines to said reactor.
Dependencies are inferred from the claim text.