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以生物质焦为催化剂,考查微波加热方式下CO2-H2O联合重整CH4反应中不同变量对反应的影响,研究联合重整过程中反应气转化行为。研究发现,添加水蒸气不仅能促进CH4和CO2的转化,还会提高合成气中H2与CO的比值;增加微波功率可促进CH4和CO2转化,提高H2与CO的比值,而加大CO2与CH4物质的量之比和降低空速在提高CH4和CO2转化率的同时,会降低H2与CO的比值;联合重整反应初期CH4和CO2转化率均高于CO2重整CH4反应。随着时间的延长,反应气转化率持续降低,反应后期两反应中CO2转化率非常接近,而CH4转化率差值在10%以上。
Using biomass coke as catalyst, the effects of different variables on the reaction of CO2-H2O co-reformer CH4 reaction under microwave heating were investigated. The conversion behavior of reaction gas during co-reformation was investigated. The study found that adding water vapor can not only promote the conversion of CH4 and CO2, but also increase the ratio of H2 to CO in the syngas; increasing the microwave power can promote the conversion of CH4 and CO2, increase the ratio of H2 to CO, and increase the ratio of CO2 to CH4 The mass ratio and the space velocity decreased the ratio of H2 to CO while increasing the conversion of CH4 and CO2. The conversion of CH4 and CO2 in the initial stage of reforming reaction were both higher than that of CO2 reforming. With the extension of time, the reaction gas conversion rate continued to decline, the reaction of the two reactions CO2 conversion rate is very close, while the CH4 conversion rate difference of more than 10%.