Study on Cracking/Oxidation/Integrated Reforming Reaction for Efficient Conversion of Biomass to High‐Quality Syngas

The advanced gasification technology of coal is mainly based on oxidation reaction and high temperature but is not suitable for biomass conversion. High tar and CO 2 content are the two main issues that affect the efficiency of biomass gasification. In order to deeply convert hydrocarbons/tar and CO 2 simultaneously, and enhance syngas yield, the cracking/partial oxidation/reforming reactions and their integrated reaction routes are investigated from an interrelated view. The effects of each reaction on the distribution of C/H elements in hydrocarbons/tar and syngas are illustrated. By cracking and oxidation reaction, the syngas yield can only reach 0.93 Nm 3 kg −1 , about 58 % of the theoretical maximum value; a large proportion of residual C/H atoms existing in stable hydrocarbons/tar/CO 2 /H 2 O are not converted. Based on the concept of lattice O oxidation combined with dry reforming, it realizes syngas yield (CO+H 2 ) 1.56 Nm 3 kg −1 with 91.6 % concentration, demonstrating that tar/hydrocarbons and CO 2 /H 2 O are converted to syngas efficiently. The effects of [O]/C ratio on gas yield represent a synergistic coordination between lattice Os oxidation and catalytic reforming reaction. Oxidation‐reforming is the optimum route for biomass conversion to high‐quality syngas.