文献类型：会议论文

英文题名：Low carbon fuel production from combined solid oxide CO2 co-electrolysis and Fischer-Tropsch synthesis system: A modelling study

作者：Xu, Haoran[1];Maroto-Valer, M. Mercedes[1];Ni, Meng[2];Cao, Jun[3];Xuan, Jin[4]

机构：[1]Heriot Watt Univ, Sch Engn & Phys Sci, RCCS, Edinburgh EH14 4AS, Midlothian, Scotland;[2]Hong Kong Polytech Univ, Dept Bldg & Real Estate, Bldg Energy Res Grp, Hung Hom,Kowloon, Hong Kong, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai, Peoples R China;[4]Loughborough Univ, Dept Chem Engn, Loughborough, Leics, England

会议论文集：10th International Conference on Applied Energy (ICAE)

会议日期：AUG 22-25, 2018

会议地点：Hong Kong, HONG KONG

语种：英文

外文关键词：Solid oxide electrolyzer cell; Fischer-Tropsch synthesis; Mathematical modelling; Hydrocarbon generation

摘要：CH4-assisted solid oxide electrolyzer cells (SOECs) can co-electrolyze H2O and CO2 effectively for simultaneous energy storage and CO2 utilization. Compared with conventional SOECs, CH4-assisted SOECs consume less electricity because CH4 in the anode provides part of the energy for electrolysis. As syngas (CO and H-2 mixture) is generated from the co-electrolysis process, it is necessary to study its utilization through the subsequent processes, such as Fischer-Tropsch (F-T) synthesis to produce more value-added products. An F-T reactor can convert syngas into hydrocarbons, and thus it is very suitable for the utilization of syngas. In this paper, the combined CH4-assisted SOEC and F-T synthesis system is numerically studied. Validated 2D models for CH4-assisted SOEC and F-T processes are adopted for parametric studies. It is found that the cathode inlet H2O/CO2 ratio in the SOEC significantly affects the production components through the F-T process. Other operating parameters such as the operating temperature and applied voltage of the SOEC are found to greatly affect the productions of the system. This model is important for understanding and design optimization of the combined fuel-assisted SOEC and F-T synthesis system to achieve economical hydrocarbon generation.