폐기물 가스화 플랜트에서 배출되는 바닥재 재활용을 위한 Char 가스화 특성 연구 = A Study on Char Gasification Characteristics for Recycling of Bottom Ash Emitted by Waste Gasification Plant

다국어 초록 (Multilingual Abstract)

Bottom ash char, which is released and collected from a solid refuse fuel (SRF) gasification pilot plant, has been usedas a feed material for one more step of the gasification process. This char contains higher unburned materials than thebottom ash collected from incineration plants. This could have sufficient potential for application to gasificationtechnology. The lab-scale gasification experimental process consists of a downdraft gasifier, a cyclone, a scrubber, anda filtering system for the analysis of syngas. To find the optimal conditions and to decrease loss on ignition, the airequivalent ratio (ER) was adjusted from 0.1 to 0.5. The results of this experiment showed that 0.2 ER was the optimalcondition, with 32.41% of cold gas efficiency and 40.41% of carbon conversion ratio. However, compared to the generalgasification process, this efficiency and conversion ratio still seem to be low since the feedstock was the leftovers of thegasification process with a lower amount of volatile carbonaceous components. Furthermore, with increasing ER, the losson ignition of the bottom ash in this experiment decreases due to the enhancement of the oxidation reaction. On average,it decreased by up to about 20% compared to the feedstock.

참고문헌 (Reference)

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