Integrated process and Cu/Zn-based catalyst for synthesizing methanol utilizing CO2, generating electricity from hydrocarbon feedstock

US11773039B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Siva Rama Krishna Garapati · Faridabad, IN
• Meeta Sharma · Faridabad, IN
• Mani Ramya · Faridabad, IN
• Rajesh Muralidhar Badhe · Faridabad, IN
• Alok Sharma · Lisle, US
• Gurpreet Singh · Alwar, IN
• Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

• Filing date: Sep 30, 2022
• Grant date: Oct 3, 2023
• Expiry date: Sep 30, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present disclosure provides an integrated process and a Cu/Zn-based catalyst system for synthesizing methanol from CO2 and generating electricity from hydrocarbon feedstock. The process includes steps of gasifying hydrocarbon feedstock into syngas by using oxygen and using the produced syngas as a fuel in a power generation unit, reusing a first part of an exhaust stream of the power generation unit as a reactant in the gasification unit. Using a second part of the said exhaust stream as a reactant for methanol synthesis in a methanol reactor, wherein, the second part is treated to separate CO2 and water, and CO2 is used as the reactant for methanol synthesis. Operating an electrolyzer during non-peak hours to produce hydrogen, wherein, a required stoichiometric ratio of the produced hydrogen is transferred into the methanol reactor for methanol synthesis, wherein, a Cu/Zn-based catalyst system is used for methanol synthesis through a direct hydrogenation reaction of CO2.