Carbon Dioxide Capture and Utilization for Gas Engine

Takashi Ogawa

Power and Industrial Systems R&D Center, Toshiba Corporation, Fuchu, Japan.

DOI: 10.4236/epe.2013.510064                

Abstract

Sodium glycinate absorption and ethylene carbonate synthesis from a mixture gas of ethylene oxide and carbon dioxide are evaluated as carbon dioxide capture and utilization system for gas engine flue gas. The energy requirement for CO₂ capture is estimated at 3.3 GJ/tonne CO₂. The ethylene carbonate synthesis utilizes more than 90% of the captured CO₂ and supply 2.5 GJ/tonne CO₂ of thermal energy, which is 76% of the energy requirement for CO₂ capture. The thermal integration of the sodium glycinate absorption and the ethylene carbonate synthesis reduces the energy requirement for CO₂ capture from 3.3 GJ/tonne CO₂ to 0.8 GJ/tonne CO₂. The energy requirement for the CO₂ capture is supplied using the steam saturated at 0.78 MPa from the gas engine without its electric power reduction.

Keywords

Carbon Dioxide Capture; Carbon Dioxide Utilization; Carbonate Formation; Gas Engine

Conflicts of Interest

The authors declare no conflicts of interest.

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