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Title: Method for reactivating solid catalysts used in alkylation reactions

Abstract

A method for reactivating a solid alkylation catalyst is provided which can be performed within a reactor that contains the alkylation catalyst or outside the reactor. Effective catalyst reactivation is achieved whether the catalyst is completely deactivated or partially deactivated. A fluid reactivating agent is employed to dissolve catalyst fouling agents and also to react with such agents and carry away the reaction products. The deactivated catalyst is contacted with the fluid reactivating agent under pressure and temperature conditions such that the fluid reactivating agent is dense enough to effectively dissolve the fouling agents and any reaction products of the fouling agents and the reactivating agent. Useful pressures and temperatures for reactivation include near-critical, critical, and supercritical pressures and temperatures for the reactivating agent. The fluid reactivating agent can include, for example, a branched paraffin containing at least one tertiary carbon atom, or a compound that can be isomerized to a molecule containing at least one tertiary carbon atom.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174378
Patent Number(s):
6,579,821
Application Number:
09/593,186
Assignee:
Bechtel Bwxt Idaho, LLC (Idaho Falls, ID)
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Ginosar, Daniel M., Thompson, David N., Coates, Kyle, Zalewski, David J., and Fox, Robert V. Method for reactivating solid catalysts used in alkylation reactions. United States: N. p., 2003. Web.
Ginosar, Daniel M., Thompson, David N., Coates, Kyle, Zalewski, David J., & Fox, Robert V. Method for reactivating solid catalysts used in alkylation reactions. United States.
Ginosar, Daniel M., Thompson, David N., Coates, Kyle, Zalewski, David J., and Fox, Robert V. Tue . "Method for reactivating solid catalysts used in alkylation reactions". United States. https://www.osti.gov/servlets/purl/1174378.
@article{osti_1174378,
title = {Method for reactivating solid catalysts used in alkylation reactions},
author = {Ginosar, Daniel M. and Thompson, David N. and Coates, Kyle and Zalewski, David J. and Fox, Robert V.},
abstractNote = {A method for reactivating a solid alkylation catalyst is provided which can be performed within a reactor that contains the alkylation catalyst or outside the reactor. Effective catalyst reactivation is achieved whether the catalyst is completely deactivated or partially deactivated. A fluid reactivating agent is employed to dissolve catalyst fouling agents and also to react with such agents and carry away the reaction products. The deactivated catalyst is contacted with the fluid reactivating agent under pressure and temperature conditions such that the fluid reactivating agent is dense enough to effectively dissolve the fouling agents and any reaction products of the fouling agents and the reactivating agent. Useful pressures and temperatures for reactivation include near-critical, critical, and supercritical pressures and temperatures for the reactivating agent. The fluid reactivating agent can include, for example, a branched paraffin containing at least one tertiary carbon atom, or a compound that can be isomerized to a molecule containing at least one tertiary carbon atom.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {6}
}

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