Indian Oil Corporation Limited

Rajesh Muralidhar Badhe

Alok Sharma

Sankara Sri Venkata Ramakumar

Gurpreet Singh Kapur

Brijesh Kumar

Ravinder Kumar Malhotra

Santanam Rajagopal

Manoj Kumar

Umish Srivastava

Anand Kumar

Meeta Sharma

Gurpreet Kapur Singh

Umish Srivastva

Garapati Siva Ramakrishna

Mohan Rao Damacherla

Siva Rama Krishna Garapati

Mani Ramya

Swati Neogi

Gopala Krishna Acharya

Sunil Sachdev

The invention relates to a device and process for converting organic waste to biogas with high methane content and improved organic conversion efficiency. Disclosed process consists of two stages and in the first stage, shredded organic waste is digested in primary digester in which biodegradable organic fractions present in waste gets converted to volatile fatty acids and alcohols dissolved in aqueous solution by hydrolytic and acidogenic microorganisms. Primary digester effluent pH, is adjusted to about 6.8-7.5 by addition of controlled alkali solution. Neutralized waste slurry is separated into liquid solution called as leachate and digested solid sludge. In the second stage, liquid leachate comprising volatile fatty acids are converted to biogas with methane content in the range 80-86% by methanogenic microbial culture in main digester under anaerobic conditions. This invention further describes optimized primary and main digester configurations with operating conditions to improve organic conversion efficiency in both the digesters.

Device and process for converting organic waste to biogas

The present disclosure provides an integrated process and a Cu/Zn-based catalyst system for synthesizing methanol from COand 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 COand water, and COis 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 CO.

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

The present subject matter describes a gasification system () for gasifying a variety of feedstocks. A first stage gasifier () receives a feedstock either from a first group of feedstocks or a second group of feedstocks or both. The first stage gasifier decomposes the received feedstock to produce a first product. A second stage gasifier () is connected to the first stage gasifier () for receiving the first product. In addition, the second stage gasifier () receives a feedstock either from a third group of feedstocks or a fourth group of feedstocks or both. The second stage gasifier () gasifies the first product and the received feedstock to produce syngas.

Two stage gasifier for generating syngas

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Faridabad, India

Rajesh Muralidhar Badhe