CO2 Capture Using a Hydrogen Decomposed From Natural Gas Turbine

Abstract

The present writer proposes a new concept of power generation system for CO2 recovery named Hydrogen Decomposed from Natural Gas Turbine (HYDET) in this paper. This concept is natural gas reforming and hydrogen separation. The natural gas is reformed with steam simultaneously the hydrogen is separated from the reformed gas through the hydrogen separation membrane. After the residual gas is combusted by the after burner with pure oxygen, CO2 steam mixture is exhausted. An inorganic hydrogen separation membrane will be assumed to use such as ceramic multi-layer porous membranes. The performance of the proposed system will be over 50% HHV at the sending-end. Though the CO2 recovery ratio will depend upon Hydrogen and CO2 separation ratio of the membrane, theoretically it will be over 90%. And using CO2 liquefaction equipment of LNG cold heat exchanger, liquefied CO2 will be recovered with extra high efficiency. In order to apply this system, the development of the membrane reformer is the key technology.