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과열증기처리 반탄화목분을 이용한 나무연탄 개발 및 혼합비에 따른 연료특성에 관한 연구
강찬영,유승민,강석구 한국가구학회 2018 한국가구학회지 Vol.29 No.4
This study was carried out to develop wood briquettes by torrefied oak wood chips and anthracite coal by mixing ratio. For this purpose, the oak wood chips were torrefied at 300°C with the superheated steam and then mixed with wood powder, anthracite coal and gelatin binder by mixing ratio And then physical, thermal, fuel and microscope characteristics of the briquettes were analyzed. As the physical characteristics, the compression ratio of wood briquettes was higher than that of conventional briquettes. As the thermal properties, the higher the content of torrefied powder, the higher the calorific value but the lower the ash content. As a result of combustion test, 100% Torrefied wood briquette monoxide emission amount by mixing ratio was about 55% lower than conventional briquettes. Also, It was found that the shorter the combustion duration, the higher the content of torrefied powder. As a result of SEM observation, It can be found that the torrefied powder and the anthracite coal powder are physically. chemically bonded to each other due to the adhesion of gelatine. In conclusion, wood briquettes have a high initial temperature rise as the content of torrefied wood powder is high, but burnning time is shortter, so it is considered to be suitable for the case where it is necessary to heat up quickly or to use energy-consuming equipment in a short time.
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