Methods and systems for cryogenically separating carbon dioxide and hydrogen from a syngas stream

Abstract

The disclosure relates generally to methods as well as configurations for cryogenically separating carbon dioxide and hydrogen and particularly to methods and configurations for cryogenically separating carbon dioxide and hydrogen from a syngas stream to produce high quality carbon dioxide stream(s) and/or high quality hydrogen stream(s). In an embodiment, a system for cryogenically separating carbon dioxide from a syngas stream comprises a pressure swing adsorption system, wherein the pressure swing adsorption (PSA) system separates a syngas input stream into a hydrogen-rich stream and a carbon dioxide-rich stream. The PSA unit outputs the hydrogen-rich stream and the carbon dioxide-rich stream and a carbon dioxide capturing unit cryogenically converts the carbon dioxide-rich stream to a dense phase. The hydrogen-rich stream may be used as a fuel source and/or a feedstock for chemical synthesis, and the dense phase carbon dioxide may be sequestered and stored, or used as a chemical feedstock.

Dependencies are inferred from the claim text.