Synergistic effects and its influencing factors during co-processing of coal and biomass in a wire-mesh reactor

The study investigated the synergistic effects of co-gasification between coal and biomass at various blending ratios, temperatures, and contact conditions using a wire-mesh reactor. This reactor ensured high heating rate and relatively separated particles at all times. The influence of biomass volatiles on the co-conversion process was isolated and analyzed to evaluate their contribution to the overall synergistic effects. Results showed that the addition of biomass volatiles significantly promoted the reaction performance of the blends, leading to more efficient synergy between the two types of particles. A new indicator, Ivol, was proposed to quantify the contribution of biomass volatiles, which revealed that, at a blending ratio of approximately 10 wt%, the promotion of volatiles from biomass became more significant than catalytic effects of AAEMs as temperature increased from 700 to 1000 degrees C. The contact conditions between the two types of particles also influenced the synergy of the blends, with greater synergy observed when contact conditions were improved. Furthermore, the study showed that synergy was more sensitive to the distance between the particles at higher temperature. The findings suggest that enhancing the synergistic effects through improved contact conditions in co-gasification of coal and biomass could significantly improve the gasification kinetics of higher rank coals.

Automated summary

The study investigated the synergistic effects of co-gasification between coal and biomass at different blending ratios, temperatures, and contact conditions. The addition of biomass volatiles significantly enhanced the reaction performance of the blends, leading to more efficient synergy between the two types of particles. The study also showed that improving contact conditions and reducing particle distance could enhance synergy and improve gasification kinetics.