废轮胎与生物质共热解特性研究

doi:10.3969/j.issn.0253-2417.2018.05.008

Abstract

Abstract: The co-pyrolysis process of waste tire and biomass at various blend ratios, heating rate and granular size were investigated using thermogravimetric analysis. HSC calculate simulation software was used to simulate the release rule of pyrolysis gas. The results showed that the co-pyrolysis process of waste tire and biomass was divided into three stages:drying stage (20-200℃), gasification and pyrolysis stage (200-500℃), secondary cracking stage (500-800℃). With the waste tire blend ratios decreasing from 100% to 0, the initial pyrolysis temperature decreased from 358.0℃ to 288.5℃, and the terminated pyrolysis temperature decreased from 473.0℃ to 361.6℃. With the increasing of heating rate and granular size, the maximum pyrolysis reaction rate and terminated pyrolysis temperature increased, the reaction moved toward to high temperature without influence on terminal reaction products. Pyrolysis kineties of the co-pyrolysis process was studied by Coats-Redfern method. The results showed that the activation energies of co-pyrolysis process (200-500℃) were between 18.61-40.86 kJ/mol, and decreased with the decreasing of waste tire blend ratio. HSC simulation showed that with the decreasing of waste tire blend ratios, content of H₂, CO, CO₂ increased, but CH₄ decreased. According to the ratio of amount of gas and pyrolysis properties, it was found that more combustible gas could be obtained at blend ratio of waste tire 40%-60%.

Key words: biomass, waste tire, pyrolysis kinetics, TG-DTG, pyrolysis behaviors, HSC

CLC Number:

TQ35

WU Kai, ZHU Jinjiao, ZHU Yuezhao, YANG Ye. Co-pyrolysis Process of Waste Tire and Biomass[J]. Chemistry and Industry of Forest Products, 2018, 38(5): 53-60.

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Co-pyrolysis Process of Waste Tire and Biomass

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