Method and device for generating steam and low oxygen gas

Abstract

Described is a method and device for generating steam and low oxygen gas. The device includes a burner assembly adapted to generate a hot combustion gas. A combustion chamber is included that has a series of water-filled coils positioned therein. Feedwater that passes through the water-filled coils is turned into steam by heat from the combustion gas. The steam exits the device for transport to a steam system for use therein. A water pool is positioned beneath the combustion chamber to cool combustion gases from the combustion chamber. A cooling water system is included that provides cooling water to the water pool. A demisting filter is positioned above the water pool to remove water droplets from the combustion gas. Finally, an exhaust opening is positioned downstream from the demisting filter to allow the combustion gas to exit the device for use elsewhere.

1 . A device for generating steam and low oxygen gas, comprising:
 a burner assembly adapted to generate a hot combustion gas;   a combustion chamber, the combustion chamber having series of water-filled coils positioned therein, wherein the water-filled coils receive feedwater that passes through the water-filled coils such that the feedwater is turned into steam by heat from the combustion gas, the steam exiting the device for transport to a steam system for use therein;   a water pool positioned beneath the combustion chamber, the water pool adapted to maintain pooled cooling water and cool combustion gases from the combustion chamber;   a cooling water system, the cooling water system having:
 a cooling water inlet for providing cooling water to the water pool; 
 a demisting filter positioned above the water pool, the demisting filter adapted to remove water droplets from the combustion gas; and 
 an exhaust opening downstream from the demisting filter, the exhaust opening adapted to allow the combustion gas to exit the device for use elsewhere. 
   
     
     
         2 . The device as set forth in  claim 1 , wherein the combustion chamber includes walls and wherein the water-filled coils pass through the walls of the combustion chamber. 
     
     
         3 . The device as set forth in  claim 2 , wherein the cooling water system further comprises a packing material positioned in the cooling water system between the demisting filter and above the water pool. 
     
     
         4 . The device as set forth in  claim 3 , wherein the cooling water system further comprises spray nozzles for introducing the cooling water into the cooling water system, the spray nozzles positioned between the packing material and the demisting filter. 
     
     
         5 . The device as set forth in  claim 4 , further comprising a float valve fluidicly connected with the water pool, the float valve adapted to maintain the cooling water at a level higher than a bottom of the walls of the combustion chamber. 
     
     
         6 . The device as set forth in  claim 5 , wherein the cooling water system concentrically surrounds the combustion chamber. 
     
     
         7 . The device as set forth in  claim 6 , wherein the combustion chamber includes a top portion and a bottom portion, where the top portion is formed in a conical shape while the bottom portion is cylindrically-shaped. 
     
     
         8 . The device as set forth in  claim 2 , further comprising a float valve fluidicly connected with the water pool, the float valve adapted to maintain the cooling water at a level higher than a bottom of the walls of the combustion chamber. 
     
     
         9 . The device as set forth in  claim 1 , wherein the cooling water system further comprises a packing material positioned in the cooling water system between the demisting filter and above the water pool. 
     
     
         10 . The device as set forth in  claim 9 , wherein the cooling water system further comprises spray nozzles for introducing the cooling water into the cooling water system, the spray nozzles positioned between the packing material and the demisting filter. 
     
     
         11 . The device as set forth in  claim 1 , wherein the cooling water system concentrically surrounds the combustion chamber. 
     
     
         12 . The device as set forth in  claim 1 , wherein the combustion chamber includes a top portion and a bottom portion, where the top portion is formed in a conical shape while the bottom portion is cylindrically-shaped. 
     
     
         13 . A method for generating steam and low oxygen gas, comprising acts of:
 generating a hot combustion gas with a burner assembly;   passing water through a series of water-filled coils positioned in a combustion chamber;   heating the water in the water-filled coils with the combustion gas to turn the water into steam;   discharging the steam for transport to a steam system for use therein;   cooling the combustion gas in pooled cooling water;   removing water droplets from the combustion gas using a demisting filter; and   discharging the combustion gas via an exhaust opening for use elsewhere.