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Study on Co-Pyrolysis Characteristics of Biomass Components and Polyethylene by TG-MS
Honggang Fan, Jing Gu, Yazhuo Wang, Haoran Yuan, Mingyang He, Fuan Sun
Strategic Study of CAE ›› 2018, Vol. 20 ›› Issue (3) : 102-108.
PDF(1206 KB)
PDF(1206 KB)
Study on Co-Pyrolysis Characteristics of Biomass Components and Polyethylene by TG-MS
In order to explore the synergetic effect and the variation of small molecule gas products in the co-pyrolysis process of main components of biomass with plastics , a thermogravimetry-mass spectrum (TG-MS) method was used to study the co-pyrolysis characteristics of cellulose, xylan, lignin with polyethylene. The blending ratio of each co-pyrolysis sample was 1∶1(w/w). The weight loss intervals of the single components and the mixed components were obtained by the TG experiment, and the theoretical and experimental values were obtained by fitting the TG data of the individual components. It can be confirmed that the synergetic effect exists in the process of co-pyrolysis , and this effect promotes the decomposition of the samples. MS experimental data shows that the presence of polyethylene could facilitate the decomposition of the biomass components and increase the yield of small molecule gas products during the process of co-pyrolysis. The production of H2O and CO2 in the small molecular products in the pyrolysis of cellulose with polyethylene was increased. The xylan and polyethylene will promote the decomposition of each other during the co-pyrolysis process, and the yield of H2O, CH4, H2 and C2H4 will be raised. The co-pyrolysis between lignin and polyethylene could promote the the yield of CO, C2H4 and H2.
cellulose / xylan / lignin / polyethylene / co-pyrolysis
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