Effect of <scp> CO <sub>2</sub> </scp> atmosphere on biomass pyrolysis and in‐line catalytic reforming
Jiandong Ye, Jun Xiao, Xiaodong Huo, Yang Gao, Jingwen Hao, Min Song
Abstract
To enhance the conversion efficiency of biomass CO2 gasification and decrease tar, the experimental study of biomass pyrolysis and in-line catalytic CO2 reforming (BPy-ILCCR) were investigated in a two-stage reactor. The prepared K-Ni/Al catalyst exhibits superior catalytic activity for gas products in BPy-ILCCR. Results show that both CO2 concentration and temperature promote the rise of the gas production, but the increase slows down when CO2 concentration is more than 40 vol%. At 700°C, the gas yield and Xc can reach 0.83 g/g-bio and 92.4%, respectively (40 vol% CO2, 3 g catalyst). The comparative study indicates that steam is slightly better for reducing liquid product under the same concentration of CO2 and H2O, and the Xc at 80 vol% CO2 can reach 93.9%, close to the value obtained at 40 vol% H2O. Moreover, there exist similar quantities of coke deposition on the catalyst under the CO2 and H2O atmosphere.