CHEMICAL LOOPING COMBUSTION

摘要

A chemical looping combustion process for producing heat or steam or both including reducing a metal oxide oxygen carrier from an initial oxidation state in a first reduction reaction between a hydrocarbon fuel and a metal oxide oxygen carrier to provide CO2, H2O, heat, and a reduced metal or metal oxide having a first reduced state, the first reduced state lower than the initial oxidation state, further reducing the reduced metal or metal oxide from the first reduced state in a second reduction reaction between additional hydrocarbon fuel and the reduced metal or metal oxide to provide CO2, H2O, heat, and a further reduced metal or metal oxide having a second reduced state, the second reduced state lower than the first reduced state, and oxidizing the further reduced metal or metal oxide with air to produce N2, O2, heat, and the metal oxide oxygen carrier, the oxidation state of the metal oxide oxygen carrier having been substantially oxidized to the initial oxidation state.