木质纤维素生物质和废聚氯乙烯共水热碳化制备高品质固体燃料：水热炭性质及其燃烧和热解行为。
Co-hydrothermal carbonization of lignocellulosic biomass and waste polyvinyl chloride for high-quality solid fuel production: Hydrochar properties and its combustion and pyrolysis behaviors.
机构信息
Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
出版信息
Bioresour Technol. 2019 Dec;294:122113. doi: 10.1016/j.biortech.2019.122113. Epub 2019 Sep 5.
The rigid polyvinyl chloride (PVC) and pinewood sawdust (PS) were selected for co-hydrothermal carbonization (Co-HTC) process. The effects of hydrothermal reaction temperatures and the mixing ratios of raw materials were fully investigated. The results showed that hydrothermal reaction temperature increased could significantly promote the dechlorination efficiency at the mixing ratio of 1:1, which was 92.98% at 280 °C. The experimental HHV were higher than theoretical value and increased by 4.04%, 8.21% and 2.81% at the mixing ratios of 3:1, 1:1 and 1:3. The combustion behavior and the thermodynamic parameters of hydrochar were determined, and the activation energy tended to decrease. The Py-GC/MS analysis showed the changes of the distribution for the pyrolysis product. Aliphatic and aliphatic cyclic hydrocarbons were the main products of hydrochar pyrolysis, and the yield could be promoted by Co-HTC process. According to the FTIR spectrum, elimination and substitution were the primary mechanisms of dechlorination.
硬聚氯乙烯（PVC）和松木屑（PS）被选为共水热碳化（Co-HTC）过程的原料。充分研究了水热反应温度和原料混合比对共水热碳化过程的影响。结果表明，在混合比为 1:1 时，水热反应温度的升高可显著提高脱氯效率，在 280°C 时达到 92.98%。实验的高位热值高于理论值，在混合比为 3:1、1:1 和 1:3 时分别增加了 4.04%、8.21%和 2.81%。测定了水热炭的燃烧行为和热力学参数，活化能呈下降趋势。Py-GC/MS 分析表明了热解产物分布的变化。脂肪族和脂肪族环状烃是水热炭热解的主要产物，Co-HTC 过程可促进其生成。根据傅里叶变换红外光谱（FTIR），脱氯的主要机制为消除和取代。
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