Process for co-gasification of two or more carbonaceous feedstocks and apparatus thereof

Abstract

The present invention relates to a process for co-gasification of two or more carbonaceous feedstock, said process comprising combusting a first carbonaceous feedstock having high calorific value with low ash and high hydrogen content, to produce a heated effluent; carrying the heated effluent to second reactor where the heated effluent reacts with a second carbonaceous feedstock, having low calorific value with high ash and low hydrogen content, to produce synthesis gas.The present invention also relates to an apparatus for co-gasification of two or more carbonaceous feedstock, comprising a first reactor ( 3 ), having a first feedstock inlet port ( 1 ), a oxygen or air inlet port ( 2 ), a steam inlet port ( 9 ), a ash removal port ( 7 ), and a solid recycle port ( 6 ); a first cyclone separator ( 5 ) connected to the first reactor ( 3 ) through a first cyclone separator inlet port ( 4 ); a second reactor ( 16 ), having a second feedstock inlet port ( 10 ), and a ash removal port ( 15 ), the second reactor is connected to the first cyclone separator ( 5 ) through a gaseous inlet port ( 8 ); and a second cyclone separator ( 12 ), having a fine particles removal port ( 13 ), and an effluent port ( 14 ), wherein the second cyclone separator is connected to the second reactor through a second cyclone separator inlet port ( 11 ).

We claim: 
     
         1 . An apparatus for co-gasification of two or more carbonaceous feedstock, said apparatus comprising:
 a first reactor ( 3 ), having a first feedstock inlet port ( 1 ), a oxygen or air inlet port ( 2 ), a steam inlet port ( 9 ), an ash removal port ( 7 ), and a solid recycle port ( 6 );   a first cyclone separator ( 5 ) connected to the first reactor ( 3 ) through a first cyclone separator inlet port ( 4 );   a second reactor ( 16 ), having a second feedstock inlet port ( 10 ), and an ash removal port ( 15 ), wherein the second reactor is connected to the first cyclone separator ( 5 ) through a gaseous inlet port ( 8 ); and   a second cyclone separator ( 12 ), having a fine particles removal port ( 13 ), and an effluent port ( 14 ), wherein the second cyclone separator is connected to the second reactor through a second cyclone separator inlet port ( 11 ).   
     
     
         2 . The apparatus as claimed in  claim 1 , wherein the first reactor ( 3 ) is selected from a fluid bed reactor or an entrained bed reactor. 
     
     
         3 . The apparatus as claimed in  claim 1 , wherein the first reactor ( 3 ) is a fluid bed reactor. 
     
     
         4 . The apparatus as claimed in  claim 1 , wherein the second reactor ( 16 ) is selected from a moving bed reactor or a fluid bed reactor. 
     
     
         5 . The apparatus as claimed in  claim 4 , wherein the second reactor ( 16 ) is selected from a group consisting of up-draft moving bed reactor, and down-draft moving bed reactor. 
     
     
         6 . The apparatus as claimed in  claim 4 , wherein the second reactor ( 16 ) is a moving bed reactor in which the heated effluent is introduced radially. 
     
     
         7 . The apparatus as claimed in  claim 6 , wherein the moving bed reactor comprises:
 a feed stock inlet port ( 103 );   a distributor ( 102 );   an effluent port ( 105 ); and   an ash removal port ( 106 ).   
     
     
         8 . The apparatus as claimed in  claim 6 , wherein the moving bed reactor is connected to the first reactor through an inlet port ( 101 ).