• 한국연소학회지
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• 제14권4호
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• pp.33-40
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• 2009

Waste Thermal Pyrolysis Melting process was proposed and has been studied in order to prevent air pollution by dioxin and fly ash generated from combustion process for disposal of waste. In this study, applicability as the fuel of diffusion burner of synthesis gas formed from Waste Thermal Pyrolysis process was addressed. Results showed that there is no big difference in the flame shape between MNDF and SNDF, and lift off was detected in MIDF but flame is more stable in SIDF which contains hydrogen with high combustion velocity as flow rate in first nozzle is increased. And radiation heat flux in inverse diffusion flame of synthesis gas was found to be more by 1.5 times than that in inverse diffusion flame of methane because of higher mole fraction of $CO_2$ with high emissivity in product gas.

• 공업화학
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• 제29권4호
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• pp.474-478
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• 2018

Thermal decomposition of waste Achyranthes Root (WAR) emitted from its decoction process was investigated using a TG analyzer and a fixed-bed reactor. The WAR had the larger C and fixed carbon content than fresh AR (FAR) due to the extraction of hemicelluloses from FAR during decoction process. Thermogravimetric (TG) analysis results also revealed the elimination of hemicellulose by its decoction. Relatively high contents of the cellulose and lignin made high contents of their typical pyrolyzates, such as acids, ketones, furans, and phenols, in the pyrolysis of WAR using the fixed-bed reactor. The increase of pyrolysis temperature from 400 to $500^{\circ}C$ increased yields of oil and gas due to the more effective cracking efficiency of WAR at a higher temperature. The chemical composition of product oil was also changed by applying the higher pyrolysis temperature, which increased the selectivity to furans and phenols.

• 한국기계가공학회지
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• 제8권1호
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• pp.37-42
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• 2009

This paper describes the fuel oil characteristics of mulching waste vinyl by indirect heating emulsion system. For the emulsion experiment of waste vinyl, the system is composed of melting furnace, the 1th pyrolysis furnace, and the 2nd pyrolysis furnace. The mulching waste vinyl is used for the fuel oil characteristics analysis of mulching waste vinyl. The refined oil, gasoline, and diesel oil are extracted and quantified to analysis the fuel oil characteristics. From the results of experiments, it has been shown that the production of fuel oil from mulching waste vinyl is possible using the emulsion system.

• 신재생에너지
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• 제2권2호
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• pp.118-125
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• 2006

The target of this work was the process development of demonstration plant to produce the high quality alternative fuel oil by the pyrolysis of mixed plastic waste. In the first step of research, the bench-scale units of 70 t/y and the pilot plant of 360 t/y had been developed. Main research contents in this step were the process performance test of pilot plant of 360 ton/year and the development of demonstration plant of 3,000 t/y, which was constructed at Korea R & D Company in Kimjae City. The process performance of pilot plant of 360 t/y showed about 80% yield of liquid product, which was obtained by both light gas oil(LGO) and heavy gas oil(HGO), The boiling point range distribution of LO product that was mainly consisting of olefin components in PONA group appeared at between that of commercial gasoline and kerosene. On the other hand, HO product was mainly paraffin and olefin components and also appeared at upper temperature distribution range than commercial diesel. Gas product showed a high fraction of $C_3\;and\;C_4$ product like LPG composition, but also a high fraction of $CO_2$ and CO by probably a little leak of process.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.523-526
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• 2006

The target of this work was the process development of demonstration plant to produce the high quailty alternative fuel oil by the pyrolysis of mixed plastic waste. In the first step of research, the bench-scale units of 70t/y and the pi lot plant of 360 t/v had been developed. Main research contents in this step were the process performance test of pilot plant ot 360ton/year and the development of demonstration plant of 3 000 t/y which was constructed at Korea R & D Company in Kimjae City. The process performance of pilot plant of 360 t/v showed components in PONA group appeared at between that of commercial gasoline and kerosene. On the other hand, HO product was mainly paraffin and olefin components and also appeared at upper temperature distribution range than commercial diesel. Gas product showed a high fraction of $C_3\;and\;C_4$ product like LPG composition, but also a high fraction of $CO_2$ and CO by probably a little leak of process.

• 공업화학
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• 제18권5호
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• pp.511-515
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• 2007

Tubular 형의 반응기를 이용한 선박용 폐윤활유의 등온실험에서 열분해 온도가 $440^{\circ}C$에서는 $400^{\circ}C$와 $420^{\circ}C$일 때보다 오일의 전환율이 급격하게 증가하였고 분해반응은 30 min 이내에 대부분 완료되었다. 반응온도 증가에 따라서 기체의 수율은 감소하는 경향을 나타냈으며, 고체 수율은 거의 변화가 없는 것을 확인할 수 있다. 석유화학공정으로부터 배출되는 ZSM-5 폐촉매를 사용하여 선박용 폐윤활유의 열분해반응 특성 연구를 수행하였다. Used ZSM-5와 fresh ZSM-5 촉매를 사용했을 경우에촉매가 없는 조건에서보다 기체의 수율이 현저하게 높은 것을 확인할 수 있다. 동일한 온도에서 fresh ZSM-5 촉매와 used ZSM-5 촉매의 액체 및 기체 생성량에는 거의 변화가 없었다. 반응온도 $400{\sim}440^{\circ}C$에서 fresh ZSM-5와 used ZSM-5 촉매를 사용하여 반응실험을 한 경우 촉매를 사용하지 않았을 때보다 $C_5-C_{11}$에 해당하는 탄화수소화합물의 선택성이 2배 정도 증가하였다.

• 한국폐기물자원순환학회지
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• 제34권7호
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• pp.685-696
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• 2017

This study focuses on computational particle fluid dynamics (CPFD) modeling for the fast pyrolysis of biomass in a conical spouted bed reactor. The CPFD simulation was conducted to understand the hydrodynamics, heat transfer, and biomass fast pyrolysis reaction of the conical spouted bed reactor and the multiphase-particle in cell (MP-PIC) model was used to investigate the fast pyrolysis of biomass in a conical spouted bed reactor. A two-stage semi-global kinetics model was applied to model the fast pyrolysis reaction of biomass and the commercial code (Barracuda) was used in simulations. The temperature of solid particles in a conical spouted bed reactor showed a uniform temperature distribution along the reactor height. The yield of fast pyrolysis products from the simulation was compared with the experimental data; the yield of fast pyrolysis products was 74.1wt.% tar, 17.4wt.% gas, and 8.5wt.% char. The comparison of experimental measurements and model predictions shows the model's accuracy. The CPFD simulation results had great potential to aid the future design and optimization of the fast pyrolysis process for biomass.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2005년도 연구개발 발표회 논문집
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• pp.133-138
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• 2005

The worldwide trend of waste treatment technology is rapidly transferring from "incineration system" to "gasification & melting system" which can derive the resources from waste and charge no more environmental burden to nature. And therefore it is necessary to adopt gasification & melting system to prevent the land pollution and to solve the problem of landfill area. Among several thermal waste treatment processes gasification and melting system is the representative process which can transfer waste to resources such as syn-gas, molten slag, metal hydroxide, mixed salt and sulfur through the process of compaction, pyrolysis, gasification and melting.

• 자원리싸이클링
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• 제15권1호
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• pp.37-45
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• 2006

대량 발생되어 환경 문제를 유발하는 폐플라스틱의 처리방법으로 열분해에 의한 대체 연료유 생산 기술이 부각되고 있다. 본 연구에서는 국내 폐플라스틱의 발생 현황, 국내외 유화 기술 현황, 유화의 기본적인 공정 기술과 문제점, 그리고 한국에너지기술연구원에서 개발된 유화의 신기술을 소개하였다. 이 공정의 특징은 열가소성 폐플라스틱이 혼합된 원료에 대해 공정 운전의 자동화에 의한 연속 운전이 가능하고, 반응 공정이 무촉매이지만 왁스 생성을 최소화한 순환식 분해 반응 공정이며, 또한 생성 가스의 재 사용과 슬러지로 부터 오일 회수에 의한 배출 산사물의 양을 줄이는 등의 특징을 가진 경제적, 환경적으로 많은 장점을 가지고 있다. 연간 300톤 규모의 파이롯트 플랜트 실험 결과는 정상 운전이 3일 이상의 연속 운전에 의해 오일 수율을 $81\%$ 정도 얻었다. 증류탑 상단과 하단에서 얻은 생성유는 각각 가솔린과 디젤인 경유보다 조금 높은 끊는점 분포를 보였다.

• 한국자원리싸이클링학회:학술대회논문집
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• 한국자원리싸이클링학회 2005년도 추계정기총회 및 제26회 학술발표대회 고분자리싸이클링기술 특별심포지엄
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• pp.34-46
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• 2005

대량 발생되어 환경 문제를 유발하는 폐플라스틱의 처리방법으로 열분해에 의한 대체 연료유 생산 기술이 부각되고 있다. 본 연구에서는 폐플라스틱의 발생 현황, 국내 외 유화 기술 현황, 유화의 기본적인 공정 기술과 문제점, 그리고 한국에너지기술연구원에서 개발된 유화의 신기술을 소개하였다. 이 공정의 특징은 열가소성 폐플라스틱이 혼합된 원료에 대해 공정 운전이 자동화에 의한 연속 운전이 가능하고, 반응 공정이 무촉매이지만 왁스 생성을 최소화한 순환식 분해 반응 공정이며, 또한 생성 가스의 재 사용과 슬러지의 오일 회수에 의한 배출 잔사물의 양을 줄이는 등의 특징을 가진 경제적, 환경적으로 많은 장점을 가지고 있다. 파이롯트 플랜트 실험 결과는 정상 운전이 3일 이상의 연속 운전에 의해 오일 수율이 81% 정도 얻었다. 증류탑 상단과 하단에서 얻은 생성유는 각각 가솔린과 디젤인 경유보다 조금 높은 끊는점 분포를 보였다.