Dataset on the characterization of tar partial oxidative reforming by dielectric barrier discharge using mixed toluene and benzene as model compounds

A mixture of typical components of biomass tar, toluene, benzene, and phenol, was used as a tar model to study the partial oxidation of tar by dielectric barrier discharge. The influence of the main components of biomass gasification gas (CO2, CO, H2, CH4) on the partial oxidation reaction characteristics of tar was investigated, and the liquid-phase products and discharge characteristics under different atmospheres were characterized. Possible reaction pathways under gas atmosphere were also speculated. The results indicate that dielectric barrier discharge partial oxidation can efficiently convert typical tar component mixtures under simulated gasification gas, and increasing the discharge power and O2/C ratio can promote tar conversion, improve conversion rate and main product (CO and CO2) yield. At 300 ° C, the conversion rates of toluene, benzene, and phenol can reach 98.2%, 90.5%, and 79.6%, respectively. The sum of selectivity for the main products CO and CO2 is 75.7%, with a corresponding total energy efficiency of 21.4 g/kWh. Compared to N2 atmosphere, the addition of gas components has no significant effect on discharge characteristics, but it leads to a slight decrease in tar conversion performance, with a reduction in conversion rate of less than 10.0% and a reduction in the sum of product CO and CO2 selectivity of less than 10.0%. CO and H2 are the components in gas that have the greatest impact on reactivity. At the same time, the partial oxidation process of tar can also cause small changes in gas components, with a slight decrease in H2 concentration (less than 7.0% change) and an increase in CO concentration of about 12.5%. The main reaction pathway of toluene, benzene, and phenol is through the reaction with plasma excited active substances to generate intermediates such as phenyl, benzyl, methylphenyl, phenoxy, and methylphenoxy. These intermediates react with oxygen-containing active substances to further produce gas products such as CO and CO2, while a small amount is converted into liquid products.