介质阻挡放电分解硫化氢制氢实验研究  

Experimental Study on Hydrogen Production from Hydrogen Sulfide Decomposition by Dielectric Barrier Discharge

作　　者：张婧 Zhang Jing(State Key Laboratory of Safety and Control for Chemicals,SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Shandong,Qingdao,266104)

机构地区：[1]中石化安全工程研究院有限公司化学品安全控制国家重点实验室,山东青岛266104

出　　处：《安全、健康和环境》2022年第5期47-54,共8页Safety Health & Environment

基　　金：国家自然科学基金项目(21503279),等离子体-催化协同分解硫化氢机理研究。

摘　　要：使用夹套介质阻挡放电反应器对等离子体直接分解硫化氢制氢反应进行了研究,考察了反应器类型、放电气隙、放电频率、硫化氢浓度等因素对放电反应的影响。结果表明,夹套介质阻挡放电反应器能够持续稳定分解硫化氢生成氢气和硫黄。通过调控放电条件,在比能耗(SIE)为4.2 kJ/L时,氢气收率可达91.5%;较小的放电气隙、提高放电频率有利于硫化氢分解制氢反应;相同SIE条件下,随着H_(2)S在反应原料中浓度的增加,H_(2)收率逐渐降低。此外,结合等离子体中电子碰撞活化硫化氢机理分析,提出了介质阻挡放电条件下硫化氢分解制氢反应途径。The direct decomposition of hydrogen sulfide by plasma to produce hydrogen was studied in a jacketed dielectric barrier discharge reactor.The effect of reactor type,discharge gap,discharge frequency and hydrogen sulfide concentration on the discharge reaction was investigated.The results showed that the jacketed dielectric barrier discharge reactor could continuously and stably decompose hydrogen sulfide to produce hydrogen and sulfur.By adjusting the discharge conditions,the H_(2) yield could reach 91.5%when the specific input energy(SIE)was 4.2 kJ/L.Smaller discharge gap and increasing discharge frequency were conducive to hydrogen production by hydrogen sulfide decomposition.Under the same SIE condition,the yield of H_(2) decreased gradually with the increase of H_(2)S concentration in the reaction raw material.In addition,combined with the mechanism of hydrogen sulfide activation by electron collision in plasma,the reaction pathway of hydrogen production by hydrogen sulfide decomposition under dielectric barrier discharge was proposed.

关 键 词：硫化氢 分解 制氢 介质阻挡放电 等离子体 

分 类 号：TQ12[化学工程—无机化工] TK91[动力工程及工程热物理]