使用Aspen Plus构建红橡木与高密度聚乙烯（HDPE）共热解耦合提质系统模型，基于质量、元素平衡以及现有实验数据，以热解提质油产量、品质和系统能量效率为导向优化热解温度条件，并使用GREET软件对整个流程进行全生命周期评价（LCA），研究副产物利用方式对系统碳排放的影响，旨在为生物油制备技术的工程实践和碳减排提供理论参考。结果表明，在525~675℃热解温度范围内，610℃时系统兼具最高能量效率（38.39%）和提质油产量（44.77%），为最优温度条件。对于副产物利用方式，当采用焦炭碳捕集，轻质气体重整制氢按照系统能量分配方式利用时系统环境效益最优。通过优化副产物利用和供能方式，得到碳排放最低的热解工况为525℃，此时每生产1 MJ提质油仅排放63.43 g CO₂ eq，较传统化石燃料降低了30.51%。

Aspen Plus software is used to construct a system model for co-pyrolysis of red oak and high-density polyethylene (HDPE).Based on mass balance, element balance and the existing experimental data, the pyrolysis temperature conditions are optimized with oil yield, oil quality and system energy efficiency as guidelines.GREET software is employed to perform whole life cycle assessment on the process.The effect of by-product utilization methods on system carbon dioxide emission is studied, aiming to provide theoretical reference for the engineering practice and carbon dioxide emission reduction of bio-oil preparation process.It is shown that in the pyrolysis temperature range of 525-675℃, co-pyrolysis at 610℃ can reach the highest energy efficiency (38.39%) and the maximum oil yield (44.77 wt%).System will reach the minimum carbon dioxide emission when char is used to capture carbon dioxide, light gas is reformed for hydrogen production, and extra hydrogen is outputted by energy allocation.Through optimizing the utilization of by-products and the way of energy supply, carbon dioxide emission is the lowest when the co-pyrolysis performs at 525℃, in which only 63.43 g of CO₂ eq GHGs is discharged for production of per MJ upgraded oil, representing 30.51% lower than that of traditional fossil fuels.

贾晓彤(1996-),女,硕士生。