Process for using a facility for combusting carbonaceous materials

Abstract

A process for using a facility having a first reactor ( 1 ) for reducing oxide in which enter a fuel material E 1 ) and metal oxide for providing a reaction of combustion of the fuel material (E 1 ), the first reactor ( 1 ) being connected to a second reactor ( 4 ) for oxidizing oxide, where the process includes additional oxygen (O) in a gaseous form being injected into the first reactor ( 1 ) for reducing oxide and in that the additional oxygen (O) quantity is comprised between 10 and 30% relatively to stoichiometric oxygen for full fuel material (E 1 ) combustion.

1 . Process for using a facility having a first reactor for reducing oxide in which enter a fuel material and metal oxide for providing a reaction of combustion of the fuel material, the first reactor being connected to a second reactor for oxidizing oxide, said process comprising the steps of:
 injecting additional oxygen (O) in a gaseous form into the said first reactor for reducing oxide wherein the additional oxygen quantity is between 10 and 30% relatively to stoichiometric oxygen for full fuel material combustion.   
     
     
         2 . Process according to  claim 1 , wherein the additional oxygen is mixed with a media of fluidization before entering the said first reactor for reducing oxide. 
     
     
         3 . Process according  claim 1 , wherein said fuel material is coal. 
     
     
         4 . Process according to  claim 2 , wherein said media of fluidization is steam and recycled flue gas.