Production of hydrogen and electricity from coal with CO 2 capture.” Paper presented at the Sixth Greenhouse Gas Control Technologies Conference

This paper summarizes a series of studies examining the prospective performance and cost of facilities that convert coal to H2, co-product electricity and a stream of concentrated CO2 (for sequestration). Synthe-sis gas is produced via oxygen-blown, entrained flow coal gasification, quench cooled and shifted to (pri-marily) H2 and CO2 via sulfur-tolerant water-gas shift (WGS) reactors. Our focus is on separating H2 from the syngas and processing the carbon-bearing raffinate/purge gas to produce electricity and CO2. We explore the use of novel inorganic membrane reactors for H2 separation and compare their performance and cost with conventional gas separation technologies: CO2 capture via solvent absorption followed by H2 purification using pressure swing adsorption (PSA). This work highlights potential economic benefits of high system pressure, low H2 purity, and co-sequestering CO2 with sulfur-bearing waste gases, H2S and SO2. I