环境工程学报2025，Vol.19Issue(2)：479-490,12.DOI:10.12030/j.cjee.202401085
基于响应面分析方法的等离子体转化二氧化碳优化研究
Optimization of plasma carbon dioxide conversion based on response surface methodology
摘要
Abstract
Plasma methods for carbon dioxide conversion have received much attention,but existing studies suffer from low energy efficiency.To address this problem,it is necessary to find an optimization method that takes into account both the CO2 conversion rate and energy efficiency.This study established an experimental platform utilizing dielectric barrier discharge(DBD)plasma for CO2 conversion and conducted a series of experiments.The study investigated the impact of input power,inlet gas flow rate,and discharge length on discharge characteristics and reactor temperature rise.Response surface analysis was applied to examine the individual and interactive effects of these parameters on CO2 conversion rates,energy efficiency,and external electrode temperature.The response surface equations based on the above parameters were constructed and compared with the experimental data,and the intensity of the effects of different parameters on the results and the correlation characteristics were analysed.The results showed that the effect of input power on reactor temperature rise was positively correlated,the temperature increased from approximately 65 ℃ under 20 W operating conditions to approximately 146 ℃ under 80 W operating conditions and the temperature increased of approximately 1 times.The effect of discharge length on reactor temperature rise was negatively correlated,the temperature dropped from about 133 ℃ under the 10 cm working condition to about 72℃ under the 25 cm working condition,and the cooling amplitude was nearly half.The effect of inlet gas flow on discharge was relatively weak.Under higher flow conditions(200 sccm-800 sccm),a maximum CO2 conversion rate of 6％and an energy efficiency of 406.9 μmol CO2·kJ-1 were obtained.Among the three influencing factors in the range of parameters studied in this paper,the degree of influence on carbon dioxide conversion was ranked as follows:inlet flow＞input power＞discharge length;the degree of influence on energy efficiency was ranked as follows:input power＞inlet flow＞discharge length;the degree of influence on temperature rise of the external electrode was ranked as follows:input power＞discharge length＞inlet flow.The experimental analysis results can provide basic data and a prediction model for the subsequent study of DBD conversion of carbon dioxide,and also provide optimization ideas for improving energy efficiency and enhancing heat transfer.关键词
等离子体/CO2/响应面/介质阻挡放电/放电特性/温升Key words
plasma/carbon dioxide/response surface/dielectric barrier discharge/discharge characteristic/temperature rise分类
资源环境引用本文复制引用
岳晓峰,罗洋,张红莉,许文文,刘晓平..基于响应面分析方法的等离子体转化二氧化碳优化研究[J].环境工程学报,2025,19(2):479-490,12.基金项目
国家重点研发计划项目(2018YFC0810600) （2018YFC0810600）
中科大先研院-中科大禹等离子体应用技术联合实验室运行经费项目(JL06120001H) （JL06120001H）
