Integrated Gasification System for Power and Hydrogen Production

Abstract

The growth of economic and living standard leads to more electricity demand. Unfortu- nately, due to more limitation of power station area and electricity grid development, energy delivery issue is rising up; hence, new method of delivering the power by different energy carrier is necessary to investigate. Hydrogen has the promising potential as an energy carrier due to its high gravimetric energy density and cleanliness to the environment. For comfortable storage and transportation, hydrogen is covalently bonded to methylcyclohexane (MCH) and liquid organic hydrogen carrier (LOHC). In this chapter, novel integrated gasification systems for coproduction of electricity and MCH from low-rank coal and microalgae have been proposed. The total energy effi- ciency is improved by applying enhanced process integration (EPI) technology to minimize exergy losses throughout the integrated system. The integrated system for microalgae is capable to provide more than 60% of total energy efficiency, while the integrated system for low-rank coal delivers the total energy efficiency of 84%.