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NTIS 바로가기청정기술 = Clean technology, v.23 no.3, 2017년, pp.223 - 236
김범종 (성균관대학교 기계공학과) , 류창국 (성균관대학교 기계공학과) , 이은도 (한국생산기술연구원) , 김영두 (한국생산기술연구원) , 이정우 ((주)한솔신텍) , 송재헌 ((주)한솔신텍)
As the use of waste and biomass increases in a power generation boiler, high temperature corrosion (HTC) problems of boiler heat exchangers are becoming very important. Chlorine of the low-rank fuels is mainly responsible for the HTC issues, which typically occur in the surface of high temperature h...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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신재생연료 사용에 있어 가장 시급히 해결해야할 문제는 무엇인가? | 그동안 신재생연료 사용 시 알칼리 성분에 의한 응집(Agglomeration), 슬래깅(Slagging) 및 파울링(Fouling)의 증가와 이에 따라 발생되는 연소장애 및 보일러 효율 하락 문제는 일반적으로 잘 알려져 있다[10,11,13,14,16-19,28-30]. 그러나 최근 폐기물 및 바이오매스 연료의 혼소율의 증가, 전용발전 설비보급의 확대와 함께 발전을 위해 스팀의 온도․압력을 높여 운전하는 보일러가 증가함에 따라 과열기(Superheater) 및 재열기(Reheater)를 중심으로 열교환기의 고온부식(High temperature corrosion) 문제가 가장 시급히 해결해야 할 현안으로 대두되고 있다[1,2,12,42,47]. | |
온실가스 배출 감소를 위한 청정화력 발전의 일환으로 증가 추세에 있는 것은 무엇인가? | 온실가스 배출 감소를 위한 청정화력 발전의 일환으로 기존 석탄화력 발전설비에 폐기물 및 바이오매스를 혼소하거나 신재생연료 전용 보일러를 이용한 발전 설비가 증가하고 있는 추세이다. 이러한 연료 전환(Fuel switching)은 단기간에 이산화탄소 배출을 저감하는 가장 효과적인 방법의 하나이지만 연료 변화에 수반되어 발생되는 여러 문제점들은 석탄을 기본으로 했던 기존 화력 발전 시스템에서 살펴볼 수 없었던 것으로, 보일러의 안정적인 운전을 방해하여 결과적으로 가동률을 크게 저하시키는 원인이 되고 있다. | |
신재생연료를 사용하여 발전하는 경우 알려진 문제점들에는 무엇이 있는가? | 그동안 신재생연료 사용 시 알칼리 성분에 의한 응집(Agglomeration), 슬래깅(Slagging) 및 파울링(Fouling)의 증가와 이에 따라 발생되는 연소장애 및 보일러 효율 하락 문제는 일반적으로 잘 알려져 있다[10,11,13,14,16-19,28-30]. 그러나 최근 폐기물 및 바이오매스 연료의 혼소율의 증가, 전용발전 설비보급의 확대와 함께 발전을 위해 스팀의 온도․압력을 높여 운전하는 보일러가 증가함에 따라 과열기(Superheater) 및 재열기(Reheater)를 중심으로 열교환기의 고온부식(High temperature corrosion) 문제가 가장 시급히 해결해야 할 현안으로 대두되고 있다[1,2,12,42,47]. |
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