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탈휘발 과정과 촤가스화 과정에서 목질계 바이오매스의 타르발생 특성
문지홍(Jihong Moon),이은도(Uendo Lee),류창국(Changkook Ryu),이영만(Younman Lee),배우근(Wookeun Bae) 한국연소학회 2011 한국연소학회지 Vol.16 No.1
Biomass gasification is a promising technology in terms of clean energy and flexible options for end use such as heat, steam, electricity, gaseous or liquid fuels. In a gasification process, reduction of tar is very important because it can cause any mechanical problems and small tar implies high energy efficiency. However, generation and conversion mechanisms of tar have not been fully understood due to its complex nature. In this study, characteristics of tar generated from different gasification stages were investigated. Korean pine woodchip was used as feedstock and tar was sampled in a separate way during devolatilization and char gasification stage, investigated. As a result, more various kinds of hydro carbon compounds were identified in the devolatilization stage than char gasification stage because primary tar compounds are released mostly from pyrolysis of cellulose and hemicellulose. When the reaction temperature increased up to 900℃, tar composition becomes simplified into about 10 aromatic compounds mostly with 1-4 rings without substitution up to phenanthrene. The sampled tar in the char gasification stage mostly contains 5-7 simple aromatic compounds.
Molten metal 유동층을 이용한 열분해 기초 실험
문지홍(Jihong Moon),전수지(Suji Jeon),황정호(Jungho Hwang),방병열(Byungryeul Bang),이은도(Uendo Lee) 한국연소학회 2014 KOSCOSYMPOSIUM논문집 Vol.2014 No.11
The feasibility of a molten metal as a bed material of a pyrolysis system was investigated. The molten metal has various advantages such as high thermal conductivity, wide operating range and low viscosity. Tin was selected since its physical characteristics are suitable for the purpose. As a results, it was found that pyrolytic oil yield and reaction rate were significantly enhanced with the molten Tin. In addition, oxygen component of the product oil was decreased due to Tin oxidation.