电晕放电二氧化碳冷等离子体转化特性研究

STUDY ON CORONA DISCHARGE FOR CARBON DIOXIDE CONVERSION USING COLD PLASMA REACTION

在常压、室温条件下利用电晕放电使二氧化碳通过冷等离子体反应分解为一氧化碳和氧气 ,由四极质谱在线定量分析产物组成。考察反应条件 (电晕类型、能量密度、气体流量等 )对反应转化率的影响 ,分析了该反应的能量效率。当放电功率为 40W、CO2 流量为 30mL·min- 1 时 ,正电晕等离子体CO2 分解反应的转化率为 15 2 % ;CO2 转化率随体系能量密度的增加而上升 ,随反应时间的增加而增大。当CO2 流量为 90mL·min- 1 、正电晕放电功率为 37 6W时 ,反应体系的能量效率为 5 89% ;实验发现 ,正电晕放电时CO2

The decomposition of CO 2 through corona discharge of cold plasma reaction at ambient temperature and atmosphere was carried out A quadrupole mass spectrometer was employed for online quantity analysis of the products of CO 2 plasma decomposition reaction The effects of reaction parameters on conversion and energy efficiency, such as different corona discharges (include positive corona discharge, negative corona discharge), energy density, flow rate of feed, etc were investigated For the flow rate of CO 2 at 30?mL·min -1 , discharge power at 40?W, the CO 2 conversion was 15 2% in positive corona plasma reaction The conversion increased with increasing energy density and decreased with increasing CO 2 flow rate For CO 2 flow rate at 90?mL·min -1 , power at 37 6?W, the energy efficiency was 5 89% in positive corona plasma reaction The conversion of CO 2 in positive corona discharge is higher than that in negative corona discharge