摘要
从硫化氢间接电解制氢中试的阴极过程出发,对传质过程与电化学反应过程分别进行了考察,并通过理论模型将两者结合起来,根据中试的实际情况,建立了阴极析氢过程宏观动力学模型.该模型在实验测量的范围内,得到了较好的验证;通过理论推导和实验验证,确立了硫化氢间接电解制氢中试阴极反应的主要影响因素为氢离子浓度、槽压和电解液温度,其中槽压的影响最大.本模型为后续的中试和工业生产提高析氢速度提供了一定的理论依据.
Hydrogen production from hydrogen sulfide, a byproduct in oil refinery has been a widely studied problem in recent years and the kinetic studies in this field is also important for the process to be used commercially. A macroscopic kinetic equation was derived, after considering all factors affecting electrode reaction and investigating the process of mass transfer in actual conditions pilot-scale. The kinetic equation was tested in pilot plant and found in agreement with experimental data. The concentration of hydrogen ion, voltage on electrobath and the temperature of electrolyte were the main factors affecting hydrogen production from indirect electrolysis of hydrogen sulfide and the voltage on electrolytic cell took a most important part in the process. The equation given could be used as theoretic basis for later studies in increasing the rate of hydrogen production.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第7期1317-1321,共5页
CIESC Journal
基金
国家高技术研究发展计划项目(2001AA515070).~~
关键词
动力学
扩散
析氢反应
电解
kinetics
diffusion
hydrogen evolution reaction
electrolysis
