Hydrogen production system and method

ES3072784T3Undetermined Publication Date: 2026-07-06
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Patent Information

Authority / Receiving Office
ES · ES
Patent Type
Patents
Filing Date
2024-10-14
Publication Date
2026-07-06

AI Technical Summary

Technical Problem

Existing hydrogen gas production methods are energy-intensive and inefficient in separating and utilizing carbon dioxide as a by-product, leading to wasteful CO2 production and potential system clogging due to freezing or deposition.

Method used

A method and system that reforms a fuel into a supercritical fluid or gas mixture of H2 and CO2, followed by isobaric cooling in a heat exchanger assembly to induce phase separation, using the separated liquid phase as a coolant for further cooling and expanding it to enhance separation efficiency, thereby reducing CO2 freezing risks and enhancing H2 and CO2 purity.

Benefits of technology

The method achieves high purity H2 and CO2 separation with reduced energy consumption, enabling a self-sustaining and efficient hydrogen gas production process that minimizes CO2 deposition and clogging, allowing for continuous operation.

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Abstract

The present invention describes a method for producing hydrogen gas from a fuel that can be transformed into at least H2 and CO2. The method comprises the following steps: (a) supplying the fuel to a reactor; (b) transforming the fuel in the reactor into at least H2 and CO2, thereby obtaining a supercritical fluid or a gas mixture containing H2 and CO2; (c) cooling the supercritical fluid or gas mixture in a heat exchanger to induce phase separation, resulting in a gas phase containing H2 and a liquid phase containing CO2; (d) separating the liquid phase from the gas phase; and (e) directing the separated liquid phase obtained in step (d) to the heat exchanger to cool the supercritical fluid or gas mixture from step (c). The invention also describes hydrogen gas production systems configured to implement this method.
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