Syngas production and tar reduction system by using air and steam at fluidized bed

The present invention the tar present in the synthesis gas by the gasification zone and the combustion zone is the main combustion reaction is injected directly into the synthesis gas produced in dense phase (Dense bed) combustor upper gasifier to outside of the region that occurs group discrete integral fluidized-bed gasification pyrolysis (Thermal cracking) to decompose to maximize the amount of heat generated at the same time a synthesis gas to minimize the physical problems caused by tar and through a steam reforming (steam reforming) with steam (steam) of combustion gases the gas engine, and synthesized by a gas dual fuel boiler relates to the production and tar reduction system of the synthesis gas is available for this. The main configuration of the present invention to the sand layer is formed on the inner and gasifying solid fuel First loop chamber 20 is connected to the gasifier (10) receives the sand and the gasifier; CFB combustor that receives a loop seal connection (33) providing the synthesis gas produced in the first loop thread gasifier (10) being provided for the sand through the synthesis gas supply unit 34 from combusting the fuel heating the sand (30 )Wow; It is connected to the upper portion of the CFB combustor 30 and the cyclone (40) and separating the gas and solid particles that is discharged from the CFB combustor (30); Downcomer 50 is located on the lower part of the cyclone 40 and fall the sand of the heat transfer medium away from the cyclone (40) and; One end and is connected to the lower portion of the steel pipe 50, the other end of which is connected to the upper part of the gasifier 10, the downcomer 50 has a falling sand is collected through the second loop to form a sand layer 61 It characterized in that it comprises a chamber (60).