Chemical looping system

Abstract

A chemical looping system and a method of transferring oxygen therein are provided. The system has an air reactor adapted to receive air for oxidizing an oxygen carrier, a fuel reactor adapted to receive a fuel and the oxidized oxygen carrier for at least partially oxidizing the fuel by reducing the oxygen carrier to produce a gas. The oxygen carrier has oxide-dispersion-strengthened alloy particles.

1 .- 15 . (canceled) 
     
     
         16 . A chemical looping system, comprising:
 an air reactor adapted to receive air for oxidizing an oxygen carrier, and   a fuel reactor adapted to receive a fuel and the oxidized oxygen carrier for at least partially oxidizing the fuel by reducing the oxygen carrier to produce a gas,   wherein the oxygen carrier comprises oxide-dispersion-strengthened alloy particles.   
     
     
         17 . The chemical looping system according to  claim 16 , wherein the oxide-dispersion-strengthened alloy particles are composed of a metal having a dispersion of a metal oxide or a carbide. 
     
     
         18 . The chemical looping system according to  claim 17 , wherein the metal is selected from the group consisting of: nickel, copper, iron, cobalt, manganese, and cadmium. 
     
     
         19 . The chemical looping system according to  claim 17 , wherein the metal oxide is selected from the group consisting of: cerium oxide, titanium oxide, and zirconium oxide. 
     
     
         20 . The chemical looping system according to  claim 17 , wherein the carbide is silicon carbide. 
     
     
         21 . The chemical looping system according to  claim 17 , wherein the metal oxide or the carbide is doped. 
     
     
         22 . The chemical looping system according to  claim 16 , wherein the fuel comprises a carbonaceous fuel. 
     
     
         23 . The chemical looping system according to  claim 16 , wherein the fuel reactor is adapted to combust the fuel to produce the gas. 
     
     
         24 . The chemical looping system according to  claim 16 , wherein the gas comprises CO 2  and H 2 O. 
     
     
         25 . The chemical looping system according to  claim 16 , wherein the fuel reactor is adapted to partially oxidize the fuel to produce the gas, and wherein the gas comprises a reformer gas. 
     
     
         26 . The chemical looping system according to  claim 25 , wherein the reformer gas comprises H 2 , CO, C 2 O and H 2 O. 
     
     
         27 . The chemical looping system according to  claim 16 , wherein fuel reactor is further adapted to receive a steam. 
     
     
         28 . A method for transferring an oxygen in a chemical looping system, comprising:
 providing an air reactor adapted to receive air for oxidizing an oxygen carrier, and   providing a fuel reactor adapted to receive a fuel and the oxidized oxygen carrier for at least partially oxidizing the fuel by reducing the oxygen carrier to produce a gas,   wherein the oxygen carrier comprises oxide-dispersion-strengthened alloy particles.   
     
     
         29 . The method according to  claim 28 , wherein the oxide-dispersion strengthened alloy particles are composed of a metal having a dispersion of a metal oxide or a carbide. 
     
     
         30 . The method according to  claim 29 , wherein the metal is selected from the group consisting of: nickel, copper, iron, cobalt, manganese, and cadmium.