Rotary Kiln Catalytically Enhanced Oxy-Fuel Gasification and Oxy-fuel Combustion (RK-GEN) System, Method, or Apparatus

A power plant comprising

• an air separation unit arranged to separate oxygen from air and produce a stream of substantially pure liquid oxygen;
• or alternatively a liquid oxygen receiving, storage and supply system for substantially pure liquid oxygen;
• rotary kiln gasifiers using enhanced catalytic oxy-fuel gasification to produce a synthesis gas and volcanic glass (frit);
• and
• a synthesis gas (syngas) cleanup system for the removal of synthesis gas contaminants produced from the feedstock gasification;
• and
• provisions for a multistage membrane hydrogen removal and capture system;
• and
• an oxy-fuel fired boiler arranged to combust the synthesis gas in the presence of substantially pure oxygen gas, and to produce an exhaust gas comprising water and carbon dioxide;
• and
• a carbon dioxide removal unit arranged to recover carbon dioxide gas from the exhaust gas, recycle a portion of the recovered carbon dioxide gas for passage through the rotary kiln gasifier, and liquefy the remainder of the recovered carbon dioxide gas for removal from the plant;
• wherein said carbon dioxide removal unit is thermally integrated with the air separation unit or alternately the liquid oxygen storage and supply system by directing a stream of either liquid nitrogen or liquid oxygen to the carbon dioxide removal unit to liquefy the recovered carbon dioxide gas, the liquid oxygen/nitrogen thereby evaporating and if oxygen, forming cold oxygen gas which is heated prior to consumption in the rotary kiln and oxy-fuel fired boiler.