• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.53-54
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• 2011

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.243-244
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• 2011

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.113-114
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• 2011

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.131-132
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• 2011

• Transactions of the Korean Society of Mechanical Engineers B
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• v.23 no.2
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• pp.159-165
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• 1999

Experimental studies have been performed to observe the basic phenomena of waste bed combustion in MSW incinerator. A reduced scale apparatus was utilized to simulate the combustion behavior in real plant with 1-dimensional transient behavior at the experimental setup, which uses wet cubic wood with ash content as simulated waste. LHV (lower heating value) of solid fuel, fuel particle size and flow rate of combustion air were taken as important parameters of the bed combustion. For the quantitative analysis, FPR (flame propagation rate), TBT (total burn-out time) and PBT (particle burn-out time) was defined. LHV represent the capability of heat release of the fuel, so that a higher LHV results in faster reaction rate of the fuel bed, which is shown by higher FPR. Fuel particle size is related with surface area per unit mass as well as heat and mass transfer coefficient. As the particle size increases the FPR decreases owing to decreasing specific surface area. Air injection supplies oxygen to the reaction zone. However oversupply of combustion air increases convection cooling of the bed and possibly extinguishes the flame.

• 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.

• Applied Chemistry for Engineering
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• v.26 no.6
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• pp.686-691
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• 2015

A basic research for utilizing solid refuse fuel (SRF) based on changing SRF properties (RDF, RPF) and types (pellet, fluff) is demonstrated. Physicochemical characteristics of SRF and also changes in thermal decomposition depending on combustion time and emission gas (NOx, CO, HCl, etc) concentration were investigated for applications to waste energy sources. In conclusion, RPF is easy to pelletize, and has better combustion efficiency, higher LHV, higher thermal reduction, and short combustion time because it is composed of plastic wastes homogeneously. Also, fluff type samples have better combustion efficiency, and short combustion time because it has wider exposed surface area for combustion. It can also save energy consumption for pelletizing.

• Journal of the Korea Organic Resources Recycling Association
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• v.21 no.1
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• pp.76-84
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• 2013

In this study, thermal weight loss, non-isothermally experiment, chemical composition analysis, calorific value, activation energy (E) were investigated to analysis the kinetic study of RDF, wood pellets, waste wood, waste textile and waste vinyl. When the chemical composition of solidification fuel was compared, the moisture content of RDF was less than the wood pellet and when the kinetic study was compared, the combustion reaction rate of the waste vinyl was higher than any other solidification fuels. However when the combustion efficiency was compared by the activation energy, the RDF had the higher efficiency than other wastes. RDF can be found that the reaction takes place between $320{\sim}720^{\circ}C$ depending on the heating rate.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2003.05a
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• pp.517-522
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• 2003

가스화 용융 기술은 주로 에너지 분야에 적용, 개발되어 온 기술로 폐기물의 에너지화라는 이론 연구에 머물러 왔지만, 최근에서야 효과적인 폐기물 이용을 위한 공정의 개발을 중심으로 발전되어 왔으며, 향후 연소반응에 근거한 공정을 점차 대체할 것으로 예측되고 있다. 폐기물을 대상으로 하는 가스화 용융 기술은 특히 환경 문제와 에너지 문제를 동시에 접근할 수 있는 것으로 가스화 공정을 거쳐 발생되는 생성가스에 포함된 유해 성분이 적고, 저급 에너지를 연료 가스나 연료유 둥의 고급에너지로 전환이 가능한 기술이다.(중략)

• Journal of Korean Society of Environmental Engineers
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• v.33 no.10
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• pp.767-773
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• 2011

The purpose of this study was to investigate the possibility of an alternative fuel resource by incinerating a mix of combustible MSW (municipal solid waste) and offals after separating recyclable material at the MRF (material recovery facilities) location. We analyzed the physical and chemical properties including the 3-contents, the calorific value, and chemical compositions of the separation rejects in MRF, and compared the results with combustible MSW. Moreover, we experimented the trend of combustible properties and the concentration change of air pollutants at mixed incineration in the MSW incinerator. According to the results of the experiment, the separation rejects showed higher heating value (5,865 kcal/kg), and lower moisture and ash content than combustible MSW. Since we have incinerated MSW in the MSW incinerator mixing the offals at 30% and 50% respectively, we know that the change of the concentration of dust, $SO_2$, $NO_2$, and CO did not appear significant, and not exceed the pollutants emission regulation. But, considering the enhancement of the HCl emission concentration (max. 33.7 ppm) at the co-incineration of the 50% offals, we believe that the proper mixing ratio of the separation rejects would become within 30%.