Process for enhancement of RON of FCC gasoline with simultaneous reduction in benzene

US11732200B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Sandup Tshering Bhutia · Faridabad, IN
• Vineeth Venu NATH · Faridabad, IN
• Arvind Mahant · Faridabad, IN
• Bandaru Hari Venkata Prasad Gupta · Faridabad, IN
• Ram Mohan Thakur · Faridabad, IN
• Madhusudan Sau · Barwala, IN
• Gurpreet Singh Kapur · Faridabad, IN
• Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

• Filing date: Mar 25, 2022
• Grant date: Aug 22, 2023
• Expiry date: Mar 25, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to an integrated process for increasing the research octane number (RON) of FCC gasoline with simultaneous reduction in benzene content. In this process, benzene rich gasoline fraction is reacted with light olefin rich gaseous streams like FCC off gas/dry gas, coker off gas to produce alkyl aromatics using FCC catalyst system containing ZSM-5 zeolite. The catalyst is continuously drawn from the FCC regenerator by suitably placing the alkylation reactor in communication with the FCC regenerator. The product stream of the alkylation reactor is routed to main fractionator for separation of off gas and benzene lean gasoline. This integrated process not only improves the octane number of gasoline but also lowers the gasoline benzene content. Further the integrated alkylation reactor system acts as a heat sink lowering the FCC regenerator temperature and enables the FCC unit to process high CCR feeds.