滑动弧放电转化CO_(2)的影响因素  

Influencing Factors of CO_(2)Conversion by Gliding Arc Discharge

作　　者：孟祥祎 张廷浩 鲁娜[1] 商克峰[1] 姜楠[1] MENG Xiangyi;ZHANG Tinghao;LU Na;SHANG Kefeng;JIANG Nan(School of Electrical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学电气工程学院,辽宁大连116024

出　　处：《石油学报（石油加工）》2023年第5期995-1002,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(U1462105);中央高校基本科研业务费(DUT20JC20)资助。

摘　　要：滑动弧放电装置结构简易、便于组装和拆卸,启停灵活,在CO_(2)转化领域被广泛关注,提升CO_(2)转化率是目前研究的重要方向。搭建了平面刀片式滑动弧反应装置,利用调制脉冲电源驱动滑动弧放电,研究反应器结构参数和气相参数对CO_(2)转化的影响。结果表明:延长电极长度、减小喷嘴直径和反应罩侧部出气能够促进CO_(2)转化;在电极长10 cm、喷嘴直径和电极间距均为2.5 mm、反应罩侧部出口条件下,CO_(2)转化能量效率达到52.8%;Ar和N_(2)能够与放电等离子体中高能电子碰撞产生亚稳态粒子,CO_(2)分子与亚稳态粒子碰撞发生解离提升CO_(2)转化率。研究了反应体系中分别添加Ar和N_(2)时CO_(2)的转化效果。结果表明,分别添加Ar和N_(2)体积分数达到90%时,CO_(2)转化率分别是单一CO_(2)转化率的2.55倍和3.05倍。The gliding arc discharge device,with the advantages of simple structure,being easy to assemble and disassemble,and flexible start-stop,is widely concerned in the field of CO_(2)conversion.How to enhance CO_(2)conversion rate is an important research direction at present.A planar blade-type gliding arc reactor was built to study the effects of reactor structure and gas phase parameters on CO_(2)conversion by use of the modulated pulse power supply driving sliding arc discharge.The results show that CO_(2)conversion can be promoted by prolonging the electrode length,reducing the nozzle diameter as well as the gas outlet from the side of the reactor cover.When meeting the conditions such as the electrode length of 10 cm,both nozzle diameter and electrode spacing of 2.5 mm,and side outlet of the reaction cover,the energy efficiency of CO_(2)conversion can reach 52.8%.Ar and N_(2)can collide with high energy electrons in discharge plasma to produce metastable particles;CO_(2)molecules can collide with metastable particles to result in dissociation and improve CO_(2)conversion rate.The conversion effects of CO_(2)after the addition of Ar and N_(2)separately in the reaction system were studied.The results show that the CO_(2)conversion rate is 2.55 times and 3.05 times the single CO_(2)conversion rate when the volume ratio of added Ar and N_(2)is up to 90%.

关 键 词：滑动弧放电 CO_(2)转化 反应器结构参数 气相参数 转化效果 

分 类 号：TE122.14[石油与天然气工程—油气勘探]