Production of pure carbon dioxide

Claim 1

A PROCESS FOR PRODUCING SUBSTANTIALLY PURE CO2 WHICH COMPRISES CONTACTING A CARBONACEOUS MATERIAL IN A REACTION ZONE WITH FINELY DIVIDED SOLID COPPER OXIDE, MAINTAINING THE COPPER OXIDE IN A UNIFORM DENSE, TURBULENT FLUIDIZED STATE BY MEANS OF A CO2 SEPARATELY INJECTED INTO THE REACTION ZONE, MAINTAINING A TEMPERATURE OF 400 TO 1000* C. IN THE REACTION ZONE WHEREBY REACTION OCCURS BETWEEN THE CARBONACEOUS MATERIAL AND THE COPPER OXIDE TO PRODUCE CO2 AND A REDUCED COPPER OXIDE, REMOVING A GASEOUS STREAM OF SUBSTANTIALLY PURE CO2 FROM THE REACTION ZONE, SEPARATELY WITHDRAWING A SOLIDS STREAM OF REDUCED COPPER OXIDE FROM THE REACTION ZONE, REOXIDIZING THE WITHDRAWN REDUCED COPPER OXIDE IN A SEPARATE OXIDATION ZONE BY COMBUSTION WITH AIR, COOLING THE REOXIDIZED COPPER OXIDE, PURGING THE REOXIDIZED COPPER OXIDE OF AIR AND GASEOUS COMBUSTION PRODUCTS BY MEANS OF CO2 GAS AND RETURNING THE REOXIDIZED OXIDE FLUIDIZED IN CO2 TO THE REACTION ZONE.