Simultaneous Hydrogen Production and CO_2 Removal in Integrated Gasification Combined Cycles (Igcc)

摘要

Coal gas cleaning at elevated temperatures and pressures has been recognized as crucial to efficient and economic coal utilization in advanced power processes such as Integrated Gasification-Combined Cycle (IGCC) processes. Separation of CO_2 from coal derived synthesis gas for capture and sequestration is a key technology in the reduction of greenhouse gas emissions to the environment. Existing technologies require expensive solvents and operate at low temperatures (i.e., <40 C,) imparting a severe energy penalty on the system. Also the coal gas contains hydrogen that, if concentrated, can be used for different systems (i.e. fuel cells, chemical synthesis, oil refineries, etc.).