Vessel for cooling syngas

Abstract

A vessel for cooling syngas comprising a syngas collection chamber and a quench chamber, wherein the syngas collection chamber has a syngas outlet which is fluidly connected with the quench chamber via a tubular diptube, wherein the diameter of the diptube at the end nearest to the syngas collection chamber is greater than the diameter of the diptube at the end terminating at the quench chamber.

1 . A vessel for cooling syngas comprising:
 a syngas collection chamber and a quench chamber, wherein the syngas collection chamber has a syngas outlet which is fluidly connected with the quench chamber via a tubular diptube,   wherein the diameter of the diptube at the end nearest to the syngas collection chamber is greater than the diameter of the diptube at the end terminating at the quench chamber,   wherein the syngas outlet comprises a tubular part, co-axial with the diptube, having a diameter which is smaller than the diameter of the tubular diptube at the end nearest to the syngas collection chamber,   wherein the tubular part terminates at a point within the diptube such that an annular space is formed between the tubular part and the diptube, and   wherein in the annular space a discharge conduit for liquid water is present having a discharge opening located such to direct the liquid water along the inner wall of the diptube, and   wherein nozzles are positioned in the larger diameter part of the diptube such that in use droplets of water are sprayed via these nozzles into the syngas as it flows downwardly through the diptube.   
     
     
         2 . A vessel according to  claim 1 , wherein the diptube comprises a tubular part with the larger diameter and a tubular part with the smaller diameter which parts are fixed together by a frusto conical part. 
     
     
         3 . A vessel according to  claim 1 , wherein the ratio between the larger diameter and the smaller diameter of the diptube is between 1.25:1 and 2:1. 
     
     
         4 . A vessel according to  claim 1 , wherein at the end of the diptube which is nearest to the syngas collection a discharge conduit is present having an outflow opening for liquid water directed such that, in use, a film of water is achieved along the inner wall of the diptube. 
     
     
         5 . A vessel according to  claim 1 , wherein the syngas collection chamber comprises an arrangement of interconnected parallel arranged tubes resulting in a gas-tight tubular wall running from a distributor to a header, said distributor provided with a cooling water supply conduit and said header provided with a steam/water discharge conduit. 
     
     
         6 . A vessel according to  claim 1 , wherein the diptube is partly submerged in a water bath at the end terminating at the quench chamber. 
     
     
         7 . A vessel according to  claim 1 , wherein a draft tube is present around the lower end of the diptube forming an annular space between the draft tube and the diptube. 
     
     
         8 . A vessel according to  claim 7 , wherein a deflector plate extends from the outer wall of the diptube at the upper discharge end of the annular space. 
     
     
         9 . A vessel according to  claim 2 , wherein a tubular part is connected to the bottom of the frusto conical part, such that the lower end of the tubular part terminates below the discharge conduit. 
     
     
         10 . A vessel according to  claim 9 , wherein at least half of the vertical length of the tubular part extends below the discharge conduit. 
     
     
         11 . A vessel for cooling syngas comprising:
 a syngas collection chamber and a quench chamber, wherein the syngas collection chamber has a syngas outlet which is fluidly connected with the quench chamber via a tubular diptube,   wherein the diameter of the diptube at the end nearest to the syngas collection chamber is greater than the diameter of the diptube at the end terminating at the quench chamber,   wherein the ratio between the larger diameter and the smaller diameter of the diptube is between 1.25:1 and 2:1,   wherein the syngas outlet comprises a tubular part, co-axial with the diptube, having a diameter which is smaller than the diameter of the tubular diptube at the end nearest to the syngas collection chamber,   wherein the tubular part terminates at a point within the diptube such that an annular space is formed between the tubular part and the diptube, and   wherein in the annular space a discharge conduit for liquid water is present having a discharge opening located such to direct the liquid water along the inner wall of the diptube, and   wherein nozzles are positioned in the larger diameter part of the diptube such that in use droplets of water are sprayed via these nozzles into the syngas as it flows downwardly through the diptube.   
     
     
         12 . A vessel according to  claim 11 , wherein the diptube comprises a tubular part with the larger diameter and a tubular part with the smaller diameter which parts are fixed together by a frusto conical part. 
     
     
         13 . A vessel according to  claim 11 , wherein a draft tube is present around the lower end of the diptube forming an annular space between the draft tube and the diptube. 
     
     
         14 . A vessel according to  claim 13 , wherein a deflector plate extends from the outer wall of the diptube at the upper discharge end of the annular space. 
     
     
         15 . A vessel according to  claim 12 , wherein a tubular part is connected to the bottom of the frusto conical part, such that the lower end of the tubular part terminates below the discharge conduit. 
     
     
         16 . A vessel according to  claim 15 , wherein at least half of the vertical length of the tubular part extends below the discharge conduit. 
     
     
         17 . A vessel for cooling syngas comprising:
 a syngas collection chamber and a quench chamber, wherein the syngas collection chamber has a syngas outlet which is fluidly connected with the quench chamber via a tubular diptube,   wherein the diameter of the diptube at the end nearest to the syngas collection chamber is greater than the diameter of the diptube at the end terminating at the quench chamber,   wherein the syngas outlet comprises a tubular part, co-axial with the diptube, having a diameter which is smaller than the diameter of the tubular diptube at the end nearest to the syngas collection chamber,   wherein the tubular part terminates at a point within the diptube such that an annular space is formed between the tubular part and the diptube, and   wherein in the annular space a discharge conduit for liquid water is present having a discharge opening located such to direct the liquid water along the inner wall of the diptube,   wherein nozzles are positioned in the larger diameter part of the diptube such that in use droplets of water are sprayed via these nozzles into the syngas as it flows downwardly through the diptube, and   wherein at the end of the diptube which is nearest to the syngas collection a discharge conduit is present having an outflow opening for liquid water directed such that, in use, a film of water is achieved along the inner wall of the diptube.   
     
     
         18 . A vessel according to  claim 17 , wherein the diptube comprises a tubular part with the larger diameter and a tubular part with the smaller diameter which parts are fixed together by a frusto conical part. 
     
     
         19 . A vessel according to  claim 18 , wherein a tubular part is connected to the bottom of the frusto conical part, such that the lower end of the tubular part terminates below the discharge conduit. 
     
     
         20 . A vessel according to  claim 19 , wherein at least half of the vertical length of the tubular part extends below the discharge conduit.