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Tube furnace를 이용한 바이오매스의 스팀 가스화 연구
성연경(Yeon Kyung Sung),최인환(In Hwan Choi),방병열(Byung Ryeul Bang),유미정(Mi Jung Yu),류태우(Tae U Yu),이은도(Uen do Lee) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.39
In this study, a fundamental study of biomass gasification was conducted in a tube furnace. Syngas compositions and gas yield are monitored as a function of time with different temperature and steam to biomass ratio. Syngas is mainly composed of hydrogen, carbon monoxide and methane. The gasification process can be separated in devolatization and char gasification, and syngas production is highly influenced by the gasification temperature and steam amount. Adding steam enhances the char gasification and hydrogen yield is significantly affected by the steam and gasification temperature.
Dual Fluidized Bed를 이용한 바이오매스 가스화 Pilot plant 개발
송재헌(Jae Hun Song),성연경(Yeon Kyung Sung),김영두(Young Doo Kim),정효재(Hyo Jae Jeong),최인수(In Soo Choi),최영태(Young Tae Choi),방병열(Byung Ryeul Bang),이은도(Uen Do Lee) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.39
In this study, development procedure of a pilot-scale dual fluidized bed gasifier for biomass will be presented. To get a design parameter and optimum operating conditions of a pilot-scale gasifier, detailed experiments were conducted in a lab-scale bubbling fluidized bed gasifier and a cold flow model. Characteristics of syngas was investigated in a lab-scale gasifier as a function of bed temperature and steam/biomass ratio, and hydrodynamic of a dual fluidized bed was investigated in a cold flow model. A preliminary result of a pilot-scale gasifier will be also presented.
과정과 촤 가스화 과정에서 우드칩 연료의 타르발생 특성의 변화
문지홍(Ji Hong Moon),성연경(Yeon Kyung Sung),이정우(Jeung Woo Lee),방병열(Byeong Ryeol Bang),이은도(Uen Do Lee) 한국열환경공학회 2010 한국열환경공학회 학술대회지 Vol.2010 No.춘계
Woodchip, a carbon neutral fuel, is one of the fastest growing renewable energy sources. Among many conversion methods to energy, gasification is the best way in terms of energy efficiency and various options for end use like heat, steam, electronics, gaseous and liquid fuel. In the gasification process of woodchip, tar treatment is very important to avoid any mechanical problems and to increase heating value of product gas. However, tar generation process is not fully understood yet. In this study, we investigated tar generation characteristics of woodchip in devolatization and char gasification process. We found that different kinds of tar was generated in the devolatization and gasification process. The effects of temperature and steam amount are also studied.