PROCESS FOR IN-SITU REGENERATION OF SPENT ION EXCHANGE RESIN CATALYST

The present invention relates to a process for in-situ regeneration of spent ion exchange resin catalyst used in the dimerization of olefins, etherification and alkylation processes by various impurities coming from feed streams and heavier oligomers forms as byproducts. The process involves backwas...

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Bibliographic Details
Main Authors SAU, Madhusudan, MAJI, Prosenjit, SUBRAMANI, Saravanan, DAS, Satyen Kumar
Format Patent
LanguageEnglish
Published 04.07.2024
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The present invention relates to a process for in-situ regeneration of spent ion exchange resin catalyst used in the dimerization of olefins, etherification and alkylation processes by various impurities coming from feed streams and heavier oligomers forms as byproducts. The process involves backwashing with water which is followed by the step of naphtha washing. Naphtha washing involves filling the reactor with paraffinic naphtha and soaking the catalyst bed in naphtha. The step of naphtha washing is followed by naphtha circulation in the reactor. The last step involves treatment with diluted HCl solution wherein deposited impurities at the ion exchange sites are removed using diluted HCl. The process achieves up to 80% regeneration of spent catalysts.
Bibliography:Application Number: US202318524086