摘要
以苯为生物质气化焦油的模型分子,在全新设计的电场局域增强的介质阻挡放电(DBD)低温等离子体反应器中开展苯与CO_(2)反应制合成气的实验研究,考察了放电电压和CO_(2)初始浓度对苯与CO_(2)转化率的影响。结果表明,以氩气为载气的280μL/L苯和3000μL/L CO_(2)混合气在流速250 mL/min、放电功率60.3 W条件下,苯和CO_(2)的转化率最高可达40.2%和67.3%,产物H_(2)与CO的摩尔比达到0.132;苯能显著促进CO_(2)转化,而CO_(2)初始浓度对苯转化率影响小,且CO_(2)能显著降低苯降解的中间产物丙酮。结合发射光谱分析,推测了苯与CO_(2)制合成气的反应过程,表明苯的亲核属性可能是CO_(2)转化效果提高的主要因素。本研究为温和条件下CO_(2)氧化生物质气化焦油制合成气奠定了基础。
Using benzene as the model molecule of biomass gasification tar,an experimental study of reforming benzene and CO_(2)to syngas was carried out in a newly designed local electric field enhanced dielectric barrier discharge(DBD)low-temperature plasma reactor,by which the effect of discharge voltage and initial CO_(2)concentration on benzene and CO_(2)conversion rate were investigated.The results show that at the airflow speed of 250 mL/min for a gas mixture composed of 280μL/L benzene and 3000μL/L CO_(2)with argon as carrier gas,and discharge power of 60.3 W,the maximum conversion rate of benzene and CO_(2)is up to 40.2%and 67.3%,respectively,and the molar ratio of H_(2)/CO can reach 0.132.It is found that benzene can significantly promote the conversion of CO_(2),initial CO_(2)concentration has little impact on benzene conversion rate,and CO_(2)can significantly reduce acetone as the the intermediate product from benzene degradation.Combined with emission spectrum analysis,the reaction process of benzene and CO_(2)to syngas was inferred,indicating that the nucleophilic property of benzene may be the key factor for the improvement of CO_(2)conversion efficiency.In conclusion,this study lays a foundation for the preparation of synthesis gas from reforming biomass gasification tar with CO_(2)under mild conditions.
作者
郭亚逢
程世业
鲁娜
唐诗雅
关银霞
李超
GUO Yafeng;CHENG Shiye;LU Na;TANG Shiya;GUAN Yinxia;LI Chao(SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Qingdao 266000,China;School of Electrical Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2023年第5期1124-1132,共9页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石油化工股份有限公司基础研究项目(321001,KL22059)基金资助。
关键词
介质阻挡放电
电场局域增强
生物质气化焦油
苯
CO_(2)
合成气
dielectric barrier discharge
local enhancement of electric field
biomass gasification tar
benzene
CO_(2)
syngas
