Combustion Installation

Abstract

A combustion installation comprising a combustion device for combustion of a fuel and an oxygen-containing gas to a combustion gas and a method for such combustion is described. A nozzle means is arranged for injection of the fuel into the combustion device and a membrane device for supplying oxygen to the combustion gases for production of the oxygen-containing gas, wherein the combustion device comprises at least a first inlet for the oxygen-containing gas and an outlet for the combustion gases. The combustion installation comprises at least a first ejector including the nozzle means and the first inlet, wherein the nozzle means and the first inlet are arranged to drive the flow of oxygen containing gas and fuel through the combustion device.

1 - 7 . (canceled) 
     
     
         8 . A combustion installation, comprising:
 a combustion device with an inner space that combusts a fuel and an oxygen containing gas to a combustion gas, wherein the combustion device comprises:
 a first inlet for the oxygen containing gas, 
 an outlet for the combustion gases, and 
 a catalyst arranged between a nozzle device that injects the fuel into the inner space of the combustion device and the outlet of the combustion device; 
   a membrane device that supplies oxygen to the combustion gases for production of the oxygen-containing gas, wherein the membrane device is arranged between the outlet of the combustion device and the first inlet of the combustion device so that the combustion gases are arranged to:
 be directed from the outlet of the combustion device into the membrane device, and 
 be supplied with oxygen and be directed back to the first inlet of the combustion device as a oxygen-containing gas; and 
   an ejector arranged to maintain the circulation of combustion gas, where the fuel is included in the primary flow of the ejector and the combustion gas is the secondary flow.   
     
     
         9 . The combustion installation according to  claim 8 , wherein the primary flow is fuel. 
     
     
         10 . The combustion installation according to  claim 9 , wherein the combustion device comprises a second inlet. 
     
     
         11 . The combustion installation according to  claim 10 , wherein a second inlet comprises part of a second ejector. 
     
     
         12 . The combustion installation according to  claim 11 , wherein the primary flow for the second ejector comprises the outlet flow from first ejector. 
     
     
         13 . The combustion installation according to  claim 10 , wherein the first inlet and the second inlet are arranged such that at least half of the gas from the membrane device is directed into the second inlet. 
     
     
         14 . The combustion installation according to  claim 10 , wherein the first inlet and the second inlet are arranged such that 50 to 80 percent of the gas from the membrane device is directed into the second inlet. 
     
     
         15 . The combustion installation according to  claim 14 , wherein the first inlet and the second inlet are arranged such that 55 to 65 percent of the gas from the membrane device is directed into the second inlet.