Method for gasifying organic material and device applied thereby

Abstract

Method for gasifying organic material in a reactor ( 2 ) in which particles ( 26 ) are provided, made of a material with a large thermal capacity, characterised in that this method consists of gasifying the organic material by means of heating in a gasification chamber ( 17 ) in the reactor ( 2 ); of letting a gas flow through the reactor ( 2 ), from an inlet ( 7 ) to an outlet ( 8 ); of letting the particles ( 26 ) circulate through the reactor ( 2 ), in counterflow with the above-mentioned gas; and of collecting the gasified organic material at the above-mentioned outlet ( 8 ).

1 . A method for gasifying organic material in a reactor in which particles are provided, made of a material with a large thermal capacity, wherein this method comprises the steps of gasifying the organic material by means of heating in a gasification chamber in the reactor; of letting a gas flow through the reactor, from an inlet to an outlet; of letting the particles circulate through the reactor, in counterflow with the above-mentioned gas; and of collecting the gasified organic material at the above-mentioned outlet.  
     
     
         2 . The method according to  claim 1 , wherein a gas is supplied to the device on one far end of the reactor, wherein the gasified organic material is collected on the opposite far end, and wherein the organic material to be gasified is supplied to the reactor between both far ends.  
     
     
         3 . The method according to  claim 1 , wherein the particles are discharged on one far end of the reactor and wherein these particles are then brought back into the reactor on the other far end of the reactor.  
     
     
         4 . The method according to  claim 2 , wherein the above-mentioned gas comprises oxygen to thereby enable a partial combustion of the organic material to be gasified in order to maintain a desired temperature in the reactor.  
     
     
         5 . The method according to  claim 1 , wherein the temperature profile in the reactor is kept practically constant.  
     
     
         6 . The method according to  claim 5 , wherein the temperature in the reactor is adjusted by the gas flow through the reactor.  
     
     
         7 . The method according to  claim 5 , wherein the temperature in the reactor is adjusted by the circulation speed of the above-mentioned particles.  
     
     
         8 . The method according to  claim 4 , wherein the temperature profile in the reactor is kept practically constant and wherein the temperature in the reactor is adjusted on the basis of an amount of gas which is supplied to the reactor.  
     
     
         9 . The method according to  claim 1 , wherein a catalyst is added to the particles to enable cracking organic material in a catalytic manner.  
     
     
         10 . The method according to  claim 9 , wherein a capture material is added to the particles which protects the used catalyst against catalyst poisons.  
     
     
         11 . A device for carrying out the method according to  claim 1 , comprising of a reactor with an inlet for gas and an outlet for the gasified organic material, which reactor is filled with particles made of a material having a large thermal capacity, wherein the reactor is equipped with a circulation circuit for the above-mentioned gas, and in the direction of the above-mentioned outlet towards the inlet, and wherein, between the inlet and the outlet, a gasification chamber is provided in the reactor.  
     
     
         12 . The device according to  claim 11 , wherein the inlet and the outlet are situated on opposite far ends of the reactor.  
     
     
         13 . The device according to  claim 11 , wherein the circulation circuit is mainly formed of a reactor and a pipe which is connected, via two openings on both its far ends, to both far ends of the reactor, and wherein a means of transport is provided in the pipe which enables movement of the above-mentioned particles through the pipe.  
     
     
         14 . The device according to  claim 13 , wherein the means of transport is formed in the shape of a bucket elevator.