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从理论上分析了甲烷临氧耦合CO2重整特性的影响因素,并与无氧体系进行了对比。结果表明:温度升高,甲烷和CO2转化率都升高,且整个反应在温度为1100K已表现出良好效果,甲烷及CO2转化率分别达到96.63%和91.73%;氧碳比α增加,甲烷转化率上升,CO2转化率下降,α=0.5时,甲烷和CO2转化率分别为99.38%和77.35%;CO2甲烷比β增加时,甲烷和CO2转化率呈现出相反的变化趋势,H2和CO收率分别在β为0.7和0.9时出现极大值;α和β对H2/CO比例都会起到重要的调节作用,α的调节范围较窄,α调节范围较宽;与无氧体系相比,甲烷转化率会高于相同工况下无氧体系的转化率(如950K时有氧体系甲烷转化率为72.58%,已高于1000K时无氧系统时甲烷转化率71.07%),α增加时,CO2转化率与甲烷转化率变化趋势相反,且对于H2/CO调节作用也有较大差异。
The influencing factors of the oxygen reforming of methane with CO2 are theoretically analyzed and compared with the anaerobic system. The results showed that the methane and CO2 conversions increased with the increase of temperature, and the whole reaction showed good effect at the temperature of 1100K. The conversion of methane and CO2 reached 96.63% and 91.73% respectively. The ratio of oxygen to carbon increased, The conversion rate of CO2 and CO2 decreased. When α = 0.5, the conversion rates of methane and CO2 were 99.38% and 77.35%, respectively. When the ratio of CO2 to methane increased, the conversion of methane and CO2 showed the opposite trend. The H2 and CO yields Respectively, with the maximum at β = 0.7 and 0.9. Both α and β play an important regulatory role on the ratio of H2 / CO. The range of α is narrow and the range of α is wide. Compared with anaerobic system, methane The conversion rate will be higher than that of the anaerobic system under the same conditions (for example, the methane conversion of aerobic system is 72.58% at 950K and 71.07% of that of oxygen-free system at 1000K). When α is increased, CO2 The conversion rate and the methane conversion rate have the opposite trend, and the H2 / CO regulatory effect is quite different.