硫化氢间接电解法制氢反应规律研究  

STUDY ON THE REACTION REGULARITY OF HYDROGEN PRODUCTION BY INDIRECT ELECTROLYSIS OF HYDROGEN SULFIDE

作　　者：刘剑利[1] 崔云梓[1] 刘增让[1] 徐翠翠[1] 宋宛霖 LIU Jianli;CUI Yunzi;LIU Zengrang;XU Cuicui;SONG Wanlin(Research Institute of Qilu Branch Co.,SINOPEC,Zibo Shandong 255400)

机构地区：[1]中国石化齐鲁分公司研究院,山东淄博255400

出　　处：《齐鲁石油化工》2024年第3期175-179,190,共6页Qilu Petrochemical Technology

摘　　要：研究了硫化氢制氢电解过程中电解电压、电解液流速、电解液组成对电流密度的影响,并考察了电极材料的稳定性。结果表明:制氢速率随着电解电压的升高而升高,当电解电压为1.1 V时,制氢电耗为2.6 kW·h/m^(3),电解电流密度可达163 mA/cm^(2);在电解液中,电流密度随H^(+)浓度增加而呈现先增大后减小的趋势,当H^(+)浓度为8 mol/L时,电流密度最大;电流密度随Fe^(2+)浓度增加而增加,且高电解电压时变化更加明显;此外,电解液流速大于200 L/h时,能有效降低扩散影响;实验还表明,石墨基电极在电解过程中展现出良好的稳定性,为电解系统的长期稳定运行提供了保障。The effects of electrolytic voltage,electrolyte flow rate and electrolyte composition on the current density during hydrogen sulfide electrolysis were studied,and the stability of electrode materials was investigated.The results show that the hydrogen production rate increases with the increase of electrolytic voltage.When the electrolytic voltage is 1.1 V,the hydrogen production power consumption is 2.6 kW·h/m~3,and the current density can reach 163 mA/cm~2.In the electrolyte,the current density increases first and then decreases with the increase of H~+ concentration.When the electrolyte H~+ concentration is 8 mol/L,the current density reaches the maximum.The current density increases with the increase of Fe~(2+) concentration in solution,and the change is more obvious when the electrolytic voltage is higher.In addition,the electrolyte flow velocity can effectively reduce the diffusion effect when it′s greater than 200 L/h;The experiment also shows that the graphitic electrode exhibits good stability in the electrolytic process,which provides a guarantee for the long-term stable operation of the electrolytic system.

关 键 词：硫化氢 制氢 间接电解 反应规律 

分 类 号：TQ111.16[化学工程—无机化工]