Pre-combustion mercury removal with co-production of hydrogen via coal electrolysis  

作　　者：Xiang Lyu Runming Tao Tianyu Zhang 

机构地区：[1]Chemical and Biomolecular Engineering Department,Ohio University,165 Stocker Center,Athens,OH,45701,USA [2]Electrification and Energy Infrastructures Division,Oak Ridge National Laboratory,Oak Ridge,TN,37831,USA [3]Beijing Key Lab for Source Control Technology of Water Pollution,College of Environmental Science and Engineering,Beijing Forestry University,Beijing 100083,China [4]Engineering Research Center for Water Pollution Source Control&Eco-remediation,College of Environmental Science and Engineering,Beijing Forestry University,Beijing 100083,China

出　　处：《Journal of Environmental Sciences》2024年第2期382-389,共8页环境科学学报（英文版）

基　　金：Chemical and Biomolecular Engineering Department in Ohio University。

摘　　要：Pre-combustion mercury removal via coal electrolysis was performed and investigated on a bench-scale coal electrolytic cell(CEC)systemically,and factorial design was used to determine the effect of different operating conditions(coal particle size,operating temperature,operating cell voltage,and flow rate of slurry)on the percentage of mercury removal,percentage of ash removal,and dry heating value change.The results showed that the operating cell voltage,as well as the interaction between operating cell voltage and coal particle size,are significant factors in the percentage of mercury removal.There is no significant factor in the percentage of ash removal and the dry heating value change,but the coal could be purified while keeping the dry heating value almost constant after electrolysis.A co-product of hydrogen could be produced during coal electrolysis with 50%lower energy consumption compared with water electrolysis.Meanwhile,a mechanism for mercury removal in coal was proposed.The facts indicate that coal electrolysis is a promising method for precombustion mercury removal.

关 键 词：Pre-combustion mercury removal Coal electrolysis Ash removal Dry heating value Hydrogen production 

分 类 号：X701[环境科学与工程—环境工程]