化工学报2024，Vol.75Issue(2)：675-684,10.DOI:10.11949/0438-1157.20231039
电晕放电与介质阻挡放电净化氰化氢的机理
Purification mechanism of hydrogen cyanide by corona discharge and dielectric barrier discharge
摘要
Abstract
Two low-temperature plasma generation methods,corona discharge and dielectric barrier discharge(DBD),are used to purify hydrogen cyanide(HCN),and the reaction mechanisms of the two are discussed.The results show that the purification efficiency of HCN is 76%when the specific input energy(SIE)is 8.3 kJ/L in corona discharge,and 94%when SIE is 11.9 kJ/L in dielectric barrier discharge.By using density functional theory(DFT)to introduce external electric field,Gaussian software is used to calculate and analyze the differences between the two different discharge modes in the HCN purification process.After the introduction of external electric field,the molecular structure and system energy of HCN molecules have changed.In corona discharge,OCN,the intermediate product of HCN conversion,is mainly converted into CO2 and N2,while in dielectric barrier discharge HCN is more easily combined with OH in the system to form H2 O and—CN,and—CN will be polymerized into C3 N4 under the action of high electron and particle density in DBD.关键词
氰化氢/电晕放电/介质阻挡放电/密度泛函理论Key words
hydrogen cyanide/corona discharge/dielectric barrier discharge/density functional theory分类
资源环境引用本文复制引用
张欣,薛宇,马懿星,王学谦,王郎郎,谢妮霏,陈怡,周晓霞..电晕放电与介质阻挡放电净化氰化氢的机理[J].化工学报,2024,75(2):675-684,10.基金项目
国家重点研发计划项目(2022YFC3901604) （2022YFC3901604）
"兴滇英才支持计划"青年人才专项 （）
