Abstract
To evaluate the durability of nickel-supported commercial catalyst for use in organic waste gasification, steam-reforming experiments were conducted at 750°C by using benzene, toluene, and xylenes (BTX) as representative aromatic hydrocarbons, and then using waste wood scraps from a construction site. The catalyst characteristics were investigated based on temporal changes in BTX decomposition behavior and the composition of gases produced from waste wood.
Regarding BTX decomposition properties, the catalytic activity duration and the decomposition rate of BTX increased in order of benzene, toluene, and xylene. Moreover, results showed that the decomposition rate of BTX improves considerably when calcium oxide is located upstream of the reforming catalyst. For waste wood gasification and reforming, the produced hydrogen maintained a roughly constant concentration around 50-60 vol.%. However, about 10 h after the experiment began, the amount of produced hydrogen per unit mass of waste wood showed a slight decrease. Simultaneously, the concentrations of low hydrocarbons, aromatic hydrocarbons, and hydrogen sulfide increased gradually.
