화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.19, No.1, 38-43, March, 2013
Export Citation
기상흡착 방법에 의한 저등급 석탄의 안정화 연구
The Stabilization Study of Low-rank Coal by Vapor Adsorption
전동혁, 박인수, 조완택, 조은미, 김상도, 최호경, 유지호, 임정환, 임영준, 이시훈†
  • 한국에너지기술연구원 청정연료연구단, 305-343 대전광역시 유성구 가정로 152
Dong Hyuk Chun, In Soo Park, Wan Taek Cho, Eun Mi Jo, Sang Do Kim, Ho Kyung Choi, Jiho Yoo, Jeong Hwan Lim, Young Joon Rhim, and Sihyun Lee†
  • Clean Fuel Department, Korea Institute of Energy Research, 152, Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea
E-mail:
초록
저등급 석탄의 건조 후 안정화하기 위한 방법으로 탄화수소의 기상흡착에 대한 연구를 수행하였다. 밀폐된 5 L의 데시케이터 용기에 건조 석탄과 안정화제를 넣고 주어진 온도에서 일정 시간 동안 유지시킨 후 석탄의 표면 특성과 자연발화 경향을 살펴보았다. 기상흡착 후 건조 석탄의 표면적은 미세기공을 중심으로 감소하였다. 흡착시간과 온도가 증가할수록 안정화 석탄의 자연발화 경향은 감소하는 것으로 나타났다. 안정화제의 종류에 따른 자연발화 경향은 큰 차이를 보이지 않았다. 분석 결과에 의하면 석탄의 0.5 wt% 이하인 소량 흡착으로 안정화 효과를 나타내는 것이 확인되었으며, 저온에서 기상흡착에 의한 안정화 현상은 저분자량의 탄화수소 흡착에 의한 것으로 나타났다.
Vapor adsorption of hydrocarbon has been studied for stabilization after drying low-rank coal. The surface characteristics and the propensity of spontaneous combustion were observed for stabilized coal which was maintained with hydrocarbons as stabilizer at several conditions of residence time and temperature. Surface area of micropores in coal mainly decreased after vapor adsorption. As residence time and temperature of adsorption process increased, the propensity of spontaneous combustion decreased. The type of hydrocarbons did not effect on the propensity of spontaneous combustion. As the analysis results of this work, the amount of hydrocarbon adsorbates required to stabilize dried coal was 0.5 wt% or less of coal, and the stabilizing effect was induced by adsorption of low-molecular-weight hydrocarbons.
Keywords:Low-rank coal;Vapor adsorption;Spontaneous combustion;Stabilization
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