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CO2 저감을 위한 미분탄과 산소/수소 당량 혼합기체 혼소에 대한 수치 해석적 연구 KCI 등재

Numerical Study on the Co-burning of Pulverized Coal and Stoichiometric Mixture Gas of Hydrogen and Oxygen for the Reduction of CO2

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한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)
한국폐기물자원순환학회 (Korea Society Of Waste Management)
초록

These days, the development of various pre- and post-combustion techniques has been pursued in order to reduce the emission of CO2 in the fleet of coal-fired power plants, since it is of great importance to each country’s energy production while also being the single largest emitter of CO2. As part of this kind of research efforts, in this study, a novel burning method is tried by the co-burning of the pulverized coal with the stoichiometric mixture of the hydrogen and oxygen (H2+1/2O2) called as HHO. For the investigation of this idea, the commercial computational code (STAR-CCM+) was used to perform a series of calculation for the IFRF (International Flame Research Foundation) coal-fired boiler (Michel and Payne, 1980). In order to verify the code performance, first of all, the experimental data of IFRF has been successfully compared with the calculation data. Further, the calculated data employed with pure coal are compared with the co-burning case for the evaluation of the substituted HHO performance. The reduced amount of coal feeding was fixed to be 30% and the added amount of HHO to produce a similar flame temperature with pure coal combustion was considered as 100% case of HHO addition. This value varies from 100 to 90, 80, 60, 50, 0% in order to see the effect of HHO amount on the performance of pulverized coal-fired combustion with the 30% reduced coal feeding. One of the most important thing found in this study is that the 100% addition of HHO amount shows approximately the same flame shape and temperature with the case of 100% coal combustion, even if the magnitude of the flow velocity differs significantly due to the reduced amount of air oxidizer. This suggests the high possibility of the replacement of the coal fuel with HHO in order to reduce the CO2 emission in pulverized coal-fired power plant. However, an extensive parametric study will be needed in near future, in terms of the reduction amount of coal and HHO addition in order to evaluate the possibility of the HHO replacement for coal in pulverized coal-fired combustion.

목차
I. 서 론
II. 이론 및 수치 해석 연구 방법
III. 이론적 고찰III. 결과 및 고찰
IV. 결 론
References
저자
  • 신미수(충남대학교 환경공학과) | Misoo Shin
  • 김용주(충남대학교 환경공학과) | Yongju Kim
  • 이용국(충남대학교 환경공학과) | Yongguk Lee
  • 장동순(충남대학교 환경공학과) | Dongsoon Jang Corresponding author