• 한국신재생에너지학회:학술대회논문집
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• 2011.05a
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• pp.186.2-186.2
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• 2011

RDF 연료의 열이용은 2003 폐플라스틱 고형연료 사용에 관한 고시가 나온이후 생산과 이용이 꾸준히 증가하는 추세이며 최근에는 원주, 대구, 부산 등 각 지역의 RDF 생산시설 구축 및 열병합 보일러 건설사업의 추진으로 더욱 활발하게 진행되고 있다. 본 연구는 순환유동층 시범 연소로에서 RDF를 전용으로 연소하여 그 연소특성을 고찰하고 상용 보일러 설계를 위한 연소자료를 축적하는 데 있다. 본 연구는 실험을 위하여 자체로 건설한 순환유동층 보일러에서 수행하였다. 연소 연구에서는 연소특성과 더불어, 환경기술과 연소로의 부식방지에 관한 기술을 고찰하였다. 보일러의 스팀사양은 $300^{\circ}C$와 15ata 이상으로 하였다. 설치된 보일러는 장시간의 운전과 반복 실험을 통해 상용 규모 보일러의 설계에 적용할 연소자료를 확보하였다. 또한 연료특성을 파악하기 위하여 국내에서 생산되는 RPF와 RDF 각 일종을 입수하여 성분을 분석하고 그 특성 자료를 비교하였다. RDF는 순환유동층 보일러에서 뛰어난 연소 효율을 나타내었으며 배연특성도 연소하는 동안 일정하게 배출되었다. 온도나 압력등 연소 변수는 RDF는 연소실험 동한 안정적인 값을 나타내었다. 대부분의 배연물질은 환경기준을 충족할 수 있었다. 다만 HCl의 배출 특성은 환경 규제치를 넘어 섰으며 별도의 배가스 처리기술을 적용하여 환경기준을 맞출 수 있었다.

• Korean Chemical Engineering Research
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• v.51 no.6
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• pp.692-699
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• 2013

In this study, isothermal (350, 375, 400, 425, 450, 500, $850^{\circ}C$) experiments were carried out using a custom-made thermobalance to analyze the thermal decomposition properties of refuse plastic fuel (RPF), which is to be used as a cofiring fuel with a sub-bituminous coal at commercial circulating fluidized bed (CFB) boiler in Korea. In isothermal pyrolysis results, no change in the reaction model was observed in the temperature range of $375{\sim}450^{\circ}C$ and it was revealed that the first order chemical reaction (F1) is the most suitable among 12 reaction models. The activation energy shows similar results irrespective of application of reaction model in that the activation energy was 39.44 kcal/mol and 36.96 kcal/mol when using Arrhenius equation and iso-conversional method ($0.5{\leq}X{\leq}0.9$) respectively. Mean-while, the devolatilization time ($t_{dev}$) according to particle size (d) of RPF could be expressed as $t_{dev}=10.38d^{2.88}$ at $850^{\circ}C$, operation temperature of CFB and for even distribution and oxidation of RPF in CFB boiler, we found that the relationship of average dispersion distance (x) and particle size was $x{\leq}1.58d^{1.44}$.

• Journal of the Korea Organic Resources Recycling Association
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• v.26 no.3
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• pp.55-61
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• 2018

This study evaluated if the selected samples meets the Solid Refuse Fuel quality criteria in Korea. Biomass and plastic wastes generated in D City were mixed in diverse ratio. When the biomass content was about 40%, the moisture content was close to the SRF criteria and was measured to be 9.8%. The ash contents were analyzed up to 4.19%, and the lower calorific values based on Steuer, Dulong Equation and Bomb Calorimeter were at least 4,851, 4,181 and 3,847 kcal/kg, respectively. As a result of the elemental analysis, sulfur and chloride content were measured up to 0.05%. Those values satisfied the SRF criteria. Also, heavy metals(Hg, Cd, Pb, As) were analyzed to be below the SRF criteria. This makes it possible to use efficiently the wood byproducts abandoned in the woods, and the physical properties of wood being weak to moisture can be supplemented with plastics. Consequently, if plastic and biomass were well mixed and made into SRF, it would overcome the problem of shortening the life span of incineration facilities due to the high temperature of plastic wastes in the incinerator.