| Title of Invention | PRODUCTION OF ALKYL AROMATIC COMPOUNDS WITH CATALYST REACTIVATION |
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| Abstract | Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst(s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Process according to this invention are typically carried out in a reaction section loaded with catalyst(s) wherein a desired alkyl aromatic compound is produced from feed aromatic and olefin compounds followed by a separation section in which the desired product is isolated and recovered. Alkylation, transalkylation, and/or isomerization reactions that occur in the reaction section are carried out in liquid phase or partial liquid phase over the said zeolite catalyst(s). At least a portion of the zeolite catalyst(s) employed in the reaction section is (are) reactivated in situ, periodically or when deemed necessary, by contracting the deactivated catalyst(s), at elevated temperature and in the substantial absence of olefin feedstock, with an aromatic stripping stream comprising the feed aromatic compound, the desired alkyl aromatic product, byproducts formed in the process, or mixtures thereof, to restore its (their) activity. |
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1859-KOLNP-2005-(17-08-2012)-ASSIGNMENT.pdf
1859-KOLNP-2005-(17-08-2012)-CORRESPONDENCE.pdf
1859-KOLNP-2005-(17-08-2012)-FORM-16.pdf
1859-KOLNP-2005-(17-08-2012)-PA.pdf
1859-kolnp-2005-granted-abstract.pdf
1859-kolnp-2005-granted-assignment.pdf
1859-kolnp-2005-granted-claims.pdf
1859-kolnp-2005-granted-correspondence.pdf
1859-kolnp-2005-granted-description (complete).pdf
1859-kolnp-2005-granted-examination report.pdf
1859-kolnp-2005-granted-form 1.pdf
1859-kolnp-2005-granted-form 18.pdf
1859-kolnp-2005-granted-form 2.pdf
1859-kolnp-2005-granted-form 26.pdf
1859-kolnp-2005-granted-form 3.pdf
1859-kolnp-2005-granted-form 5.pdf
1859-kolnp-2005-granted-letter patent.pdf
1859-kolnp-2005-granted-reply to examination report.pdf
1859-kolnp-2005-granted-specification.pdf
| Patent Number | 222896 | |||||||||||||||
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| Indian Patent Application Number | 1859/KOLNP/2005 | |||||||||||||||
| PG Journal Number | 35/2008 | |||||||||||||||
| Publication Date | 29-Aug-2008 | |||||||||||||||
| Grant Date | 27-Aug-2008 | |||||||||||||||
| Date of Filing | 19-Sep-2005 | |||||||||||||||
| Name of Patentee | STONE & WEBSTER, INC. | |||||||||||||||
| Applicant Address | 1430 ENCLAVE PARKWAY, HOUSTON, TX 77077-2023 | |||||||||||||||
Inventors:
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| PCT International Classification Number | B 01 J 38/50 | |||||||||||||||
| PCT International Application Number | PCT/US2004/008370 | |||||||||||||||
| PCT International Filing date | 2004-03-19 | |||||||||||||||
PCT Conventions:
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