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Received June 29, 2009
Accepted November 20, 2009
Available online March 4, 2010
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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순산소 석탄연소 시스템에서의 탈황·집진 기초 특성

Research on Desulfurization and Dust Removal Characteristics in Oxy-PC Combustion system

한국기계연구원 그린환경기계연구본부, 305-343 대전시 유성구 신성로 104 1한국에너지기술연구원 온실가스연구단, 305-343 대전시 유성구 가정로 102 2한국과학기술원 기계공학과, 305-701 대전광역시 유성구 과학로 335 3한전전력연구원 수화력발전연구소, 305-380 대전광역시 유성구 문지로 65
Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM), 104 Sinseong-ro, Yuseong-gu, Daejeon 305-343, Korea 1Greenhouse gas research center, Korea Institute of Energy Research(KIER), 102 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea 2Dept. Mech. Eng., Korea Advanced Institute of Science and Technology(KAIST), 335 Gwahak-ro, Yuseong-gu, Daejeon 305-701, Korea 3Power generation research lab., Korea Electric Power Research Institute(KEPRI), 65 Munji-ro, Yuseong-gu, Daejeon 305-380, Korea
sikeel@kimm.re.kr
Korean Chemical Engineering Research, February 2010, 48(1), 116-120(5)
https://doi.org/NONE
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Abstract

CCS(CO2 capture & storage) 기술의 하나인 순산소 석탄화력발전 시스템에서 시스템의 안정한 운전을 위하여 연소가스 재순환이 적용되게 된다. 연소가스 재순환시 황산화물 및 분진의 농축이 발생되게 되며 일반적인 화력발전 시스템에서 탈황 및 집진과는 다른 형태의 운전조건을 나타내게 되므로 상용 석탄화력 발전소에 적용하기에 앞서 관련 연구가 필요하다. 본 연구에서는 이와 같은 순산소 석탄 연소 시스템에서 황산화물 및 분진의 효과적인 제거를 위하여 석회석을 이용한 로내탈황 및 고온 전기집진에 관한 기초적인 연구를 수행하였다. 석회석을 이용한 로내탈황에서 ash에 의한 탈황효과를 포함하여 60%의 탈황효율을 나타내었고 전기집진의 경우에는 CO2 비율이 높을수록 분진입자의 크기가 클수록 코로나 전류량의 감소로 인하여 집진효율이 저하하는 것으로 나타났다.
CO2 is regarded as one of the greenhouse gases(GHG), which is the main reason of climate change. In order to achieve lower CO2 emissions, several efforts have been conducted worldwide. CO2 capture & storage(CCS) technology development is needed for a coal-fired combustion power plant because of huge CO2 emission. Oxy fuel combustion, one of the CCS technologies has been considered as a primary concern, nowadays. Oxy-fuel combustion_x000D_ needs flue gas recirculation(FGR) for stable operation and enrichment of CO2 concentration in the flue gas. FGR adoption for oxy-fuel combustion requires development of effective desulfurization and dust removal technology. In this study, desulfurization characteristics of lime and dust removal technology have been researched in the laboratory scale coal combustor.

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