연료 공급 및 S/C비에 따른 평판형 STR 반응기 성능 평가

Abstract

According to the propagation of fuel cell system, the importance of that system efficiency is being magnified. Thus, the efficiency improvement of reformer which is the important part of fuel cell system will be required. This study has been experimentally and numerically performed to evaluated the performance of plate type STR reactor. STR(Steam Reforming) is catalysis. And this reaction can be produce hydrogen from hydrocarbon fuels and steam. At first, we changed fuel flow rate(2, 3 and 4 l/min) in burner, and then we measured a portion of hydrogen in produced gas through the STR reactor by G.C for evaluated the performance of plate type STR reactor in various fuel supply condition. S/C ratio means how many amount of steam supplied as compared with hydrocarbon fuels. S/C ratio is important factor in reforming process, because amount of steam can be effect on efficiency of reformer. So we changed S/C ratio(2, 3 and 4) and measured a portion of hydrogen in produced gas through the STR reactor. Also, numerical analysis for the STR reactor has been conducted for cases of fuel flow rate changed. As a results, condition at fuel flow rate 2 and 3 l/min in burner could not be supplied a required amount of heat for STR. Condition at fuel flow rate 4 l/min in burner could supplied a heat sufficiently. And condition at S/C ratio 2, reaction occurred insufficiency. The result of numerical calculation showed that changing of fuel flow rate affects temperature distribution of STR reactor.