Method for regeneration of spent ion exchange resins
AssigneeReliance Industries Limited
InventorsBiswajit Shown, Swapan Ghosh, Asit Kumar Das, Suyog Subhash Salgarkar, Mukunda Madhav Baishya, Mitul Amrutbhai Ladani, Chirag Dalpatbhai Panseriya
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Abstract
The present disclosure relates to a method for regeneration of spent ion exchange resins to obtain regenerated ion-exchange resins. The regenerated ion exchange resins can efficiently reduce the total acid number (TAN) of highly acidic crude oils. The present disclosure particularly relates to a method of treatment of spent ion exchange resins using at least one non-acidic crude oil condensate and at least one polar organic solvent.
Claims11
A method for regeneration of spent ion-exchange resin to obtain regenerated ion-exchange resin, said method comprising the following steps:
- a. contacting said spent ion-exchange resin with at least one non-acidic crude oil condensate to obtain cleansed ion-exchange resin;
- b. contacting said cleansed ion-exchange resin with at least one polar organic solvent to obtain heavy hydrocarbon free ion-exchange resin;
- c. treating said heavy hydrocarbon free ion-exchange resin with a solution of at least one alkali or alkaline earth metal hydroxide to obtain activated ion-exchange resin;
- d. iteratively washing said activated ion-exchange resin, for removing organic acids trapped in said activated ion-exchange resin, to obtain regenerated ion-exchange resin.
Dependencies are inferred from the claim text.