폐기물 고형연료의 성상과 배기가스 열회수시스템의 변화에 따른 SRF 열병합발전소 공정 해석에 관한 연구

Abstract

The performance of SRF(Solid Refused Fuel) co-generation plant was analyzed with the changes of SRF property and exhaust-gas heat-recovery systems, and the process optimization of plant was studied accordingly. Performance analyses were carried out on a 20 MW-class SRF co-generation plant by using the Thermoflex code. From the present analysis results, as the moisture content of SRF is increased, the electrical power, the heat output and the overall efficiency of SRF co-generation plant are decreased. However, when the hydrogen content of SRF is increased by 5%, the overall efficiency of SRF co-generation plant is increased by 2%. According to the performance analysis results on co-generation plants with three different exhaust-gas heat recovery systems, CS(Condensing Scrubber), HTC(High Temperature Waste Condensing Heat Utilization) and HRS(Heat Recovery System), when the moisture content of SRF is changed, the co-generation plants with exhaust-gas heat-recovery systems were operated at much higher overall efficiencies than that with no exhaust-gas heat-recovery. Among three exhaust-gas heat-recovery options, the plant with HRS showed the highest overall efficiency of 104% based on LHV.