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Effects of Biomass Gasification by Addition of Steam and Calcined Dolomite in Bubbling Fluidized Beds
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  • Journal title : Korean Chemical Engineering Research
  • Volume 53, Issue 6,  2015, pp.783-791
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2015.53.6.783
 Title & Authors
Effects of Biomass Gasification by Addition of Steam and Calcined Dolomite in Bubbling Fluidized Beds
Jo, WooJin; Jeong, SooHwa; Park, SungJin; Choi, YoungTai; Lee, DongHyun;
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A fluidized-bed reactor with an inside diameter of 0.1 m and a height of 1.2 m was used to study the effect of steam and catalyst additions to air-blown biomass gasification on the production of producer gas. The equipment consisted of a fluidized bed reactor, a fuel supply system, a cyclone, a condenser, two receivers, steam generator and gas analyzer. Silica sand with a mean particle diameter of was used as a bed material and calcined dolomite (), which is effective in tar reduction and producer gas purification, was used as the catalyst. Both of Korea wood pellet (KWP) and a pellet form of EFB (empty fruit bunch) which is the byproduct of Southeast Asia palm oil extraction were examined as biomass feeds. In all the experiments, the feeding rates were 50 g/min for EFB and 38 g/min for KWP, respectively at the reaction temperature of and an ER (equivalence ratio) of 0.25. The mixing ratio (0~100 wt%) of catalyst was applied to the bed material. Air or an air-steam mixture was used as the injection gas. The SBR (steam to biomass ratio) was 0.3. The composition, tar content, and lower heating value of the generated producer gas were measured. The addition of calcined dolomite decreased tar content in the producer gas with maximum reduction of 67.3 wt%. The addition of calcined dolomite in the air gasification reduced lower heating value of the producer gas. However The addition of calcined dolomite in the air-steam gasification slightly increased its lower heating value.
Biomass;Air-steam Gasification;Empty Fruit Bunch;Wood Pellet;Calcined Dolomite;Bubbling Fluidized Beds;
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