Integrated zeolite membrane-reactor and adsorption process for co2 capture and conversion to methanol

Abstract

A carbon dioxide capture and conversion system includes a temperature swing adsorption unit configured to capture carbon dioxide and water and a zeolite membrane reactor configured to convert carbon dioxide into a product including methanol. A zeolite membrane reactor includes a housing, a plurality of hollow fiber zeolite membrane tubules arranged in the housing with each hollow fiber zeolite membrane defining an annulus, and a carbon dioxide hydrogenation catalyst contained in the annulus. Capturing and converting carbon dioxide includes providing an input stream including carbon dioxide to a temperature swing adsorption unit, separating the input stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, providing the carbon dioxide-rich stream and hydrogen gas to a zeolite membrane reactor, and hydrogenating the carbon dioxide-rich stream to yield a retentate stream including methanol and a permeate stream including water and nitrogen gas.

Dependencies are inferred from the claim text.