Pyrolysis of pine pellets catalyzed by blast furnace gas ash

Blast furnace gas ash (BFGA) contains high amounts of metal oxides such as Fe, Ca, Na and other active substances. In this paper, the possibility of BFGA as an effective and low-coat catalyst for the decomposition of biomass pyrolysis has been explored based on the high content of iron oxides for high yield of gas and low yield of pyrolysis oil from biomass. The effects of temperature and BFGA on the yield and properties of pyrolysis products were discussed. The variation of pyrolysis gas composition and low heating value of BFGA with temperature was analyzed. The results clearly indicate that adding BGFA to pine pellets can effectively decrease the liquid yield and significantly enhance the yield of pyrolysis gas. The production of H-2 in pyrolysis gas can effectively increase by 5.16 % and 2.06 % respectively with the action of #1 BFGA and #2 BFGA compared with CK. It suggests that two kinds of BFGA can reduce the content of oxygen-containing functional groups and effectively degrade organic substances. This experimental results show that BFGA has the potential to be used as an effecient catalyst with excellent stability and realize the effective utilization of waste resources.