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http://dx.doi.org/10.7464/ksct.2013.19.3.226

The Study of the Integrated Technology of the Dual Fluidized-bed Gasification for Producing Medium Heating Value Syngas  

Choi, Jae-Myeong (Department of Chemical and Biological Engineering, Korea University)
Kim, Jae-Min (Department of Chemical and Biological Engineering, Korea University)
Kim, Sung-Hyun (Department of Chemical and Biological Engineering, Korea University)
Son, Yang-Seung (Department of Chemical and Biomolecular Engineering, Sogang University)
Lee, Dong-Min (Department of Chemical and Biomolecular Engineering, Sogang University)
Choi, Jin-Hoon (Department of Chemical and Biomolecular Engineering, Sogang University)
Park, Sung-Youl (Climate Change Research Division, Korea Institute of Energy Research)
Kim, Seong-Soo (Climate Change Research Division, Korea Institute of Energy Research)
Publication Information
Clean Technology / v.19, no.3, 2013 , pp. 226-232 More about this Journal
Abstract
A 5 kg/hr scale integral dual fluidized-bed gasifier for producing medium heating value syngas from biomass or combustible wastes was manufactured. The effect of operating variables including gasification temperature, rate of feeding, and weight ratio of steam/feed on the behavior of the gasifier was investigated. The contents of $H_2$ and CO in syngas, flow rate of feeding, cold gas efficiency increased with the increased gasification temperature or rate of feeding, but decreased with the increased weight ratio of steam/feed within the experimental range. With wood powder as the feed, the concentrations of $H_2$ and CO in the syngas were as high as 41% and 32%, and the cold gas efficiency and lower heating value of the syngas were as high as 70.1% and $3,428kcal/Nm^3$. With food wastes as the feed, the concentrations of $H_2$ and CO in the syngas were as high as 37% and 23.9%, and the cold gas efficiency and lower heating value of the syngas were as high as 66.7% and $3,670kcal/Nm^3$.
Keywords
Gasification; Dual fluidized-bed; Medium heating value syngas; Biomass; Combustible wastes;
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