Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging

Abstract

The invention relates to an optimized method for producing a hot gas by oxidation of an active material having an oxidized form and a reduced form using a rotary reactor or a simulated-rotation reactor. According to the invention, the production cycle comprises a flow interruption between an oxidation stage and a scavenging stage.

1 ) A method for producing a hot gas by oxidation of an active material contained by at least one reaction module working as a function of time successively in oxidation, scavenging and reduction stages by contacting through successive circulation respectively of an oxidizing gas, a scavenging gas or a reducing gas, characterized in that the contacting stages by circulation of the oxidizing and scavenging gas are separated by a flow interruption of predetermined duration of the oxidizing gas prior to circulating the scavenging gas. 
   
   
       2 ) A method as claimed in  claim 1 , wherein said duration is determined so as to increase the contacting time of the oxidizing gas on the active material. 
   
   
       3 ) A method as claimed in  claim 1 , wherein the rate of circulation of the scavenging gas is higher than the rate of circulation of the oxidizing gas.