USE OF A CHEMICAL SOLVENT TO SEPATATE CO2 FROM A H2S-RICH STREAM

摘要

A chemical solvent is utilized to preferentially remove CO2 from a H2S-rich acid gas stream, the acid gas stream being absorbed by the chemical solvent from a sour syngas stream. A chemical solvent such as alkanolamine is used in a unique process configuration to separate CO2 from the acid gas stream. The resulting acid gas is significantly higher in H2S concentration with a substantial quantity of CO2 being removed. The resulting CO2-rich gas is recovered at minimal pressure loss, and can be remixed with the resulting sweet syngas stream as a feed for a gas combustion turbine for increased power generation.