Oxy-fuel combustion process

摘要

A method for producing oxygen-enriched gas for use in a combustion zone comprising the steps: (a) feeding air to a retention system that utilises a particulate, high temperature oxygen-selective adsorbent material to adsorb oxygen from the air; (b) retaining oxygen from said air onto the said particulate, high temperature, oxygen-selective adsorbent material; (c) removing nitrogen from the said retention system; (d) feeding oxygen-enriched gas from the said retention system to said combustion zone; (e) combusting a fuel gas in the presence of said oxygen-enriched gas; and (f) continually feeding the exhaust gas from said combustion zone to said retention system to form the oxygen-enriched gas by desorption of oxygen into the exhaust gas. Instead of step (f), steam may be used to form the oxygen-enriched gas by desorption of oxygen from the adsorbent material.