Gasification reactor and process

Abstract

A gasification process and reactor for the production of syngas by gasification of a carbonaceous feed. The gasification reactor comprises a pressure vessel encasing a gasifier unit with a reactor chamber having its lower end opening into an open-ended skirt portion arranged above a slag collection bath. The skirt portion is arranged within the impacting scope of one or more rappers.

1 . A gasification reactor for the production of syngas by gasification of a carbonaceous feed, wherein the gasification reactor comprises a pressure vessel encasing a gasifier unit with a reactor chamber having its lower end opening into an open-ended skirt portion arranged above a slag collection bath, wherein the skirt portion comprises an upper section connected to the lower end of the reactor chamber, the narrowing top end of upper section being narrower at the connection point with the lower end of the reactor chamber than the bottom portion of upper section and wherein one or more rapper anvil plates are provided on the outer surface of the upper section in the impacting scope of one of the one or more rappers. 
     
     
         2 . A gasification reactor according to  claim 1  wherein the skirt portion comprises a tubular lower section arranged within the impacting scope of the one or more rappers. 
     
     
         3 . A gasification reactor according to  claim 1 , wherein at least the upper section of the skirt portion is built of parallel coolant conduits interconnected to form a gastight membrane. 
     
     
         4 . A gasification reactor according to  claim 1  wherein the skirt portion is at least partly made of one or more plates and wherein the skirt portion comprises an outer surface provided with one or more coolant channels. 
     
     
         5 . A gasification reactor according to  claim 1 , wherein the one or more rappers extend through the wall of the pressure vessel. 
     
     
         6 . A gasification reactor according to  claim 1  wherein at least a part of the rappers comprise a housing extending from the surface of the pressure vessel, a striker rod having one end slideably supported by an opening in the housing and one end contacting the anvil plate, and an activatable impact device having a rammer head movable in line with the impacting rod between a distal position and an impacting position in which it impacts the striker rod. 
     
     
         7 . A gasification reactor according to  claim 1 , wherein the upper section of the skirt portion is conical. 
     
     
         8 . A gasification reactor according to  claim 1  wherein the skirt portion is not provided with a refractory liner. 
     
     
         9 . A process for the production of syngas by gasification of a carbonaceous feed in a gasification reactor comprising a pressure vessel encasing a gasifier unit with a reactor chamber having its lower end opening into an open-ended skirt portion arranged above a slag collection bath, wherein skirt portion comprises an upper section connected to the lower end of the reactor chamber, the upper section being narrower at the connection point with the lower end of the reactor chamber than the bottom portion of upper section and wherein one or more rapper anvil plates are provided on the outer surface of the upper section in the impacting scope of one of the one or more rappers and wherein the outer surface of the skirt portion is regularly impacted by one or more rappers to remove slag collected from its inner surface, which slag is subsequently collected in the slag collection bath. 
     
     
         10 . A process according to  claim 9  wherein the skirt portion is at least partly cooled by circulation of a coolant through coolant conduits. 
     
     
         11 . A process according to  claim 9 , wherein the upper section of the skirt portion is conical.