The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2023
Filed:
Jun. 27, 2022
Indian Oil Corporation Limited, Mumbai, IN;
Shivam Ashok Dixit, Faridabad, IN;
Ponoly Ramachandran Pradeep, Faridabad, IN;
Jitumoni Brahma, Faridabad, IN;
Terapalli Hari Venkata Devi Prasad, Faridabad, IN;
Satyen Kumar Das, Faridabad, IN;
Madhusudan Sau, Faridabad, IN;
Gurpreet Singh Kapur, Faridabad, IN;
Sankara Sri Venkata Ramakumar, Faridabad, IN;
INDIAN OIL CORPORATION LIMITED, Mumbai, IN;
Abstract
The present invention relates to a sequential thermo-chemical treatment along with adsorption-based pre-treatment process for residual oils having a very high naphthenic acid content. First stage of the process is a thermal pre-treatment step which results into generation of hydrocarbon stream with a reduced naphthenic acid content due to high temperature. In second stage of pre-treatment, generated hydrocarbon stream from stage-is subjected to esterification reaction with alcohol, such as methanol, to further reduce the TAN of hydrocarbon stream. After recovery of alcohol from the reaction mixture, depending on TAN reduction required reaction mixture may be subjected to an adsorption stage, third stage pre-treatment, where an adsorbent mixture comprising of FCC spent catalyst is used to adsorb the TAN of feed hydrocarbon stream. The treated hydrocarbon stream is then co-processed with DCU feed stock for producing lighter hydrocarbons.