CAJ | 학술논문

针对甲烷-湿空气在微细腔内的自热重整,建立了直径为2mm的微细直管试验系统,采用试验研究和三维数值计算两种方法分析了微反应器内甲烷-湿空气自热重整转化特性,并重点分析了反应温度、原料气组分比例变化对重整反应中甲烷转化率和氢气产率的影响.结果表明：在相同的甲烷流量工况下,随着温度的升高以及空/碳比和水/碳比的增大,甲烷转化率和氢气产率均增大,其中空-碳比对甲烷转化率的影响比对氢气产率的影响大;进气质量流量较小的体系比较大的体系在重整产氢方面的效果好.试验和数值模拟得到的结果比较一致.
침대갑완-습공기재미세강내적자열중정,건립료직경위2mm적미세직관시험계통,채용시험연구화삼유수치계산량충방법분석료미반응기내갑완-습공기자열중정전화특성,병중점분석료반응온도、원료기조분비례변화대중정반응중갑완전화솔화경기산솔적영향.결과표명：재상동적갑완류량공황하,수착온도적승고이급공/탄비화수/탄비적증대,갑완전화솔화경기산솔균증대,기중공-탄비대갑완전화솔적영향비대경기산솔적영향대;진기질량류량교소적체계비교대적체계재중정산경방면적효과호.시험화수치모의득도적결과비교일치.
To study the auto-thermal reforming process of methane-wet air in a micro-combustor,a straight tube experimental system has been established with a tube diameter of 2 mm,based on which experimental tests and 3D numerical simulation are performed to analyze the conversion characteristics of the reforming,focusing on the influence of reaction temperature and feed gas ratio on the methane conversion rate and H2 yield.Study results show that at the same mass flow of methane,both the methane conversion rate and H2 yield increase with rising temperature,air-methane ratio and steam-methane ratio;the influence of air-methane ratio on methane conversion rate is greater than on H2 yield.The system with low mass flow of feed gas is more efficient than that with high mass flow in H2 yield during methane-wet air reforming.Test results agree well with that of the numerical simulation.