Jet micro-induced flow reversals combustor

Abstract

A jet micro-induced flow reversals combustor is used to reduce NO x emissions. The combustor has a nozzle disposed at the head end of the combustion chamber. The nozzle includes a plurality of jets for injecting a fuel and oxidant mixture stream into the combustion chamber. A combustion liner is disposed within the casing on one side of the nozzle and a plenum chamber is disposed on another side of the nozzle and configured to provide an input of a fuel and oxidant. The nozzle and the combustion liner are sized and shaped to input the fuel and oxidant mixture stream into the combustion liner at a high velocity ratio wherein a jet velocity is greater than a combustion mean velocity within the combustion liner, to increase turbulence within the combustion liner and reduce combustion emissions.

1 . A combustor comprising:
 a casing having a longitudinal axis;   a nozzle coupled to the casing along the longitudinal axis, the nozzle having a plurality of fuel and oxidant jets formed therein;   a combustion liner formed in the casing on one side of the nozzle; and   a plenum chamber formed in the casing on another side of the nozzle and configured to provide an input of a fuel and oxidant,   wherein the nozzle and the combustion liner are sized and shaped to input a fuel and oxidant mixture stream into the combustion chamber at a high velocity ratio wherein a jet velocity is greater than a combustion mean velocity within the combustion liner, to increase turbulence within the combustion liner and reduce combustion emissions.   
     
     
         2 . A combustor as claimed in  claim 1 , wherein the nozzle is a perforated plate. 
     
     
         3 . A combustor as claimed in  claim 1 , wherein the combustion liner is comprised of a ceramic material. 
     
     
         4 . A combustor as claimed in  claim 1 , wherein the increase in turbulence in the combustion liner reduces a length of a combustion flame. 
     
     
         5 . A combustor as claimed in  claim 1 , wherein the increase in turbulence in the combustion liner reduces combustion emissions. 
     
     
         6 . A combustor as claimed in  claim 1 , wherein, the increase in turbulence in the combustion liner mixes a portion of combustion products in a flame front. 
     
     
         7 . A combustor as claimed in  claim 1 , further comprising a cooling sleeve disposed between the casing and the combustion liner. 
     
     
         8 . A combustor as claimed in  claim 1 , wherein the increase in turbulence within the combustion liner reduces NO x  emissions. 
     
     
         9 . A combustor comprising:
 a casing having a longitudinal axis;   a cooling sleeve disposed within the casing;   a perforated plate coupled to the casing at an intermediate location along the longitudinal axis, the plate having a plurality of fuel and oxidant jets formed therein;   a combustion liner disposed within the cooling sleeve and on one side of the perforated plate; and   a plenum chamber formed on another side of the perforated plate and configured to provide an input of a fuel and oxidant,   wherein the perforated plate and the combustion liner are sized and shaped to input a fuel and oxidant mixture stream into the combustion chamber at a high velocity ratio wherein a jet velocity is greater than a combustion mean velocity within the combustion liner, to increase turbulence within the combustion liner and reduce combustion emissions.   
     
     
         10 . A combustor as claimed in  claim 9 , wherein the increase in turbulence in the combustion liner reduces a length of a combustion flame. 
     
     
         11 . A combustor as claimed in  claim 9 , wherein the increase in turbulence in the combustion liner reduces combustion emissions. 
     
     
         12 . A combustor as claimed in  claim 9 , wherein, the increase in turbulence in the combustion liner mixes a portion of combustion products in a flame front. 
     
     
         13 . A combustor as claimed in  claim 9 , wherein the increase in turbulence within the combustion liner reduces NOx emissions. 
     
     
         14 . A combustor as claimed in  claim 9 , wherein the fuel and oxidant are premixed in the plenum chamber. 
     
     
         15 . A method of reducing combustion emissions in a combustor comprising:
 providing a casing having a longitudinal axis;   coupling a nozzle to the casing along the longitudinal axis, the nozzle having a plurality of fuel and oxidant jets formed therein;   disposing a combustion liner within the casing and on one side of the nozzle; and   disposing a plenum chamber on another side of the nozzle and configured to provide an input of a fuel and oxidant,   wherein the nozzle and the combustion liner are sized and shaped to input a fuel and oxidant mixture stream into the combustion chamber at a high velocity ratio wherein a jet velocity is greater than a combustion mean velocity within the combustion liner, to increase turbulence within the combustion liner and reduce combustion emissions.   
     
     
         16 . A method of reducing combustion emissions in a combustor as claimed in  claim 15 , wherein the increase in turbulence in the combustion liner reduces a length of a combustion flame and combustion emissions. 
     
     
         17 . A method of reducing combustion emissions in a combustor as claimed in  claim 15 , wherein the increase in turbulence in the combustion liner mixes a portion of combustion products in a flame front. 
     
     
         18 . A method of reducing combustion emissions in a combustor as claimed in  claim 15 , wherein the increase in turbulence within the combustion liner reduces NOx emissions. 
     
     
         19 . A method of reducing combustion emissions in a combustor as claimed in  claim 15 , further comprising disposing a cooling sleeve between the casing and the combustion liner. 
     
     
         20 . A method of reducing combustion emissions in a combustor as claimed in  claim 15 , wherein the combustor comprises a jet micro-induced flow reversals can combustor.