Production of high yields of light olefins from heavy hydrocarbons

US11891356B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Sadhullah Mukthiyar · Faridabad, IN
• Shikha SALUJA · Faridabad, IN
• Gadari Saidulu · Barwala, IN
• Arumugam Velayutham Karthikeyani · Faridabad, IN
• Madhusudan Sau · Barwala, IN
• Debasis Bhattacharyya · Faridabad, IN
• Gurpreet Singh Kapur · Faridabad, IN
• Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

• Filing date: Feb 21, 2023
• Grant date: Feb 6, 2024
• Expiry date: Feb 21, 2043

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2529/80
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for conversion of hydrocarbon feedstock into lighter olefins of C2 to C4 carbons, the process comprising of cracking the hydrocarbon feedstock in a reactor in the presence of a catalyst. The catalyst for short contact time catalytic cracking process of heavy hydrocarbons having contact time less than 1 second to produce light olefins of C2 to C4 carbon in the range of 40 to 60 wt % on fresh feed basis in a fluidized bed reactor which is concentric downflow reactor in presence of catalyst consisting of ultra-stable Y zeolite in the range of 5-10 wt %, 4 to 8 wt % of pentasil zeolite, 2.5-5 wt % of bottom selective material, 0.5-2 wt % of rare earth and 75-88 wt % of support material.