A Review of Pre-combustion Carbon Capture Technology

Abstract

Global warming is one of the most significant challenges that people are facing today. As a result, capturing greenhouse gases especially carbon dioxide becomes a necessary technology for releasing climate change. This paper mainly focuses on introducing three physical solvents and processes, including Selexol Process, Purisol Process, and Morphysorb Process, used in pre-combustion carbon capture. The paper finds that Selexol Process is a physical removal process that uses the mixture of dimethyl ether and propylene glycol as the solvent to capture carbon dioxide and hydrogen sulfide from the syngas. Purisol Process usually uses N-Methyl-2-Pyrrolidone as the solvent in the IGCC power plant to capture carbon dioxide, hydrogen sulfide, and Carbonyl sulfide. Morphysorb process is a relatively new process comparing to the other two processes. It uses N-Formylmorpholine and other morpholine derivatives to remove CO2 and H2S.