Quench chamber assembly for a gasifier

Abstract

A gasifier includes a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue. A quench chamber having a liquid coolant is disposed downstream of the combustion chamber. A dip tube is disposed coupling the combustion chamber to the quench chamber. The syngas is directed from the combustion chamber to the quench chamber via the dip tube to contact the liquid coolant and produce a cooled syngas. A draft tube is disposed surrounding the dip tube such that an annular passage is formed between the draft tube and the dip tube. An asymmetric or symmetric baffle is disposed proximate to an exit path of the quench chamber. The cooled syngas is directed through the annular passage and impacted against the asymmetric or symmetric baffle so as to remove entrained liquid content from the cooled syngas before the cooled syngas is directed through the exit path.

1 . A gasifier comprising:
 a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue,   a quench chamber having a liquid coolant disposed downstream of the combustion chamber,   a dip tube coupling the combustion chamber to the quench chamber and configured to direct syngas from the combustion chamber to the quench chamber to contact the liquid coolant and produce a cooled syngas;   an asymmetric or symmetric baffle disposed proximate to an exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas directed through between the dip tube and the quench chamber to the exit path.   
     
     
         2 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises a curved end portion. 
     
     
         3 . The gasifier of  claim 2 , wherein the curved end portion includes a plurality of holes for removing the entrained liquid content. 
     
     
         4 . The gasifier of  claim 3 , further comprising a liquid guide pipe coupled to the plurality of holes in the curved end portion. 
     
     
         5 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises a deflected end portion. 
     
     
         6 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises one or more gussets configured to remove entrained liquid content from the cooled syngas. 
     
     
         7 . The gasifier of  claim 6 , wherein the one or more gussets are disposed extending along a portion of an inner circumference of the baffle. 
     
     
         8 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises a stepped portion configured to remove entrained liquid content from the cooled syngas. 
     
     
         9 . The gasifier of  claim 1 , further comprising a deflector plate disposed between the liquid coolant and the exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas and prevent sloshing of liquid content to the exit path. 
     
     
         10 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises a faceted or round baffle having a closed bottom portion. 
     
     
         11 . The gasifier of  claim 10 , wherein the asymmetric or symmetric baffle has an opening disposed opposite to the exit path. 
     
     
         12 . The gasifier of  claim 10 , wherein the faceted baffle comprises a plurality of splash plates. 
     
     
         13 . The gasifier of  claim 12 , wherein each splash plate comprises one or more cut-out portions and one or more metal pieces, wherein the metal pieces is disposed overlapping the cut-out portions with a plurality of spacers disposed in between. 
     
     
         14 . The gasifier of  claim 12 , wherein each splash plate has a plurality of channels for allowing flow of entrained liquid content removed from the cooled syngas. 
     
     
         15 . The gasifier of  claim 10 , wherein the faceted baffle comprises a mesh structure having a plurality of drainage traps supported by one or more bolts. 
     
     
         16 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle may be disposed in an angled orientation to allow pressure relief. 
     
     
         17 . The gasifier of  claim 1 , further comprising a draft tube disposed surrounding the dip tube and defining an annular passage there between, wherein the asymmetric or symmetric baffle is configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path. 
     
     
         18 . The gasifier of  claim 17 , further comprising a separator plate disposed between the draft tube and the asymmetric or symmetric baffle and configured to remove entrained liquid content from the cooled syngas. 
     
     
         19 . The gasifier of  claim 17 , further comprising a helical baffle disposed in the annular passage between the dip tube and the draft tube and configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path. 
     
     
         20 . The gasifier of  claim 1 , wherein the asymmetric or symmetric baffle comprises an extended portion configured to divert the entrained liquid content removed from the cooled syngas, wherein the extended portion is disposed extending along a portion of an inner circumference of the baffle. 
     
     
         21 . A gasifier comprising:
 a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue,   a quench chamber having a liquid coolant disposed downstream of the combustion chamber,   a dip tube coupling the combustion chamber to the quench chamber and configured to direct syngas from the combustion chamber to the quench chamber to contact the liquid coolant and produce a cooled syngas;   a draft tube surrounding the dip tube and defining an annular passage there between;   an asymmetric or symmetric baffle disposed proximate to an exit path of the quench chamber;   a deflector plate disposed between the liquid coolant and the exit path of the quench chamber;   wherein the asymmetric or symmetric baffle and deflector plate are configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path and prevent sloshing of liquid content to the exit path.   
     
     
         22 . The gasifier of  claim 21 , wherein the deflector plate comprises an asymmetric or symmetric plate. 
     
     
         23 . The gasifier of  claim 21 , wherein the asymmetric or symmetric baffle comprises a curved end portion. 
     
     
         24 . The gasifier of  claim 21 , wherein the asymmetric or symmetric baffle comprises a deflected end portion. 
     
     
         25 . The gasifier of  claim 21 , wherein the asymmetric or symmetric baffle comprises one or more gussets configured to remove entrained liquid content from the cooled syngas. 
     
     
         26 . The gasifier of  claim 21 , wherein the asymmetric or symmetric baffle comprises a stepped portion configured to remove entrained liquid content from the cooled syngas. 
     
     
         27 . The gasifier of  claim 21 , wherein the asymmetric or symmetric baffle comprises a faceted or round baffle having a closed bottom portion. 
     
     
         28 . The gasifier of  claim 27 , wherein the faceted baffle comprises a plurality of splash plates. 
     
     
         29 . The gasifier of  claim 28 , wherein each splash plate has a plurality of channels for allowing flow of entrained liquid content removed from the cooled syngas. 
     
     
         30 . The gasifier of  claim 27 , wherein the faceted baffle comprises a mesh structure having a plurality of drainage traps supported by one or more bolts. 
     
     
         31 . The gasifier of  claim 21 , further comprising a separator plate disposed between the draft tube and the asymmetric or symmetric baffle and configured to remove entrained liquid content from the cooled syngas. 
     
     
         32 . The gasifier of  claim 21 , further comprising a helical baffle disposed between the annular passage between the dip tube and the draft tube and configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path. 
     
     
         33 . A gasifier comprising:
 a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue,   a quench chamber having a liquid coolant disposed downstream of the combustion chamber,   a dip tube coupling the combustion chamber to the quench chamber and configured to direct syngas from the combustion chamber to the quench chamber to contact the liquid coolant and produce a cooled syngas;   a draft tube surrounding the dip tube and defining an annular passage having different cross-sectional area there between;   an asymmetric or symmetric baffle disposed proximate to an exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path.   
     
     
         34 . The gasifier of  claim 33 , wherein the asymmetric or symmetric baffle comprises one or more gussets configured to remove entrained liquid content from the cooled syngas. 
     
     
         35 . The gasifier of  claim 33 , further comprising a deflector plate disposed between the liquid coolant and the exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas and prevent sloshing of liquid content to the exit path. 
     
     
         36 . A gasifier comprising:
 a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue,   a quench chamber having a liquid coolant disposed downstream of the combustion chamber,   a dip tube coupling the combustion chamber to the quench chamber and configured to direct syngas from the combustion chamber to the quench chamber to contact the liquid coolant and produce a cooled syngas;   a draft tube surrounding the dip tube and defining an annular passage there between;   a swirl generator disposed in the annular passage and configured to induce swirling motion to the cooled syngas directed through the annular passage;   an asymmetric or symmetric baffle disposed proximate to an exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path.   
     
     
         37 . The gasifier of  claim 36 , further comprising a deflector plate disposed between the liquid coolant and the exit path of the quench chamber and configured to remove entrained liquid content from the cooled syngas and prevent sloshing of liquid content to the exit path.