Patent ID: 8722003

Claim:
A carbon capture system comprising: an acid gas removal (AGR) subsystem configured to generate a flow of reduced acid gas content syngas, a flow of hydrogen sulfide (H2S) lean gas, and a first flow of H2S-rich gas from a stream of particulate-free raw syngas; an H2S selective membrane separator, said H2S selective membrane separator oriented downstream from said AGR subsystem, said H2S selective membrane separator configured to separate the flow of H2S-lean gas from the AGR into a second flow of H2S-rich gas and a flow of CO2 gas; a sulfur recovery unit (SRU) coupled in flow communication with said H2S membrane separator downstream of said membrane separator, said SRU configured to generate a flow of elemental sulfur and a flow of tail gas from the first flow of H2S-rich gas and the second flow of H2S-rich gas; and a scrubbing and conversion unit coupled in flow communication upstream from at least one of said membrane separator and said acid gas removal subsystem, wherein said scrubbing and conversion unit includes at least one of a scrubber, a cooler, and a shift conversion reactor.