文献类型：期刊文献

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] Research Centre for Carbon Solutions [RCCS], School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom; [2] Building Energy Research Group, Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; [3] State Key Laboratory of Chemical Engineering, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China; [4] Department of Chemical Engineering, Loughborough University, Loughborough, United Kingdom

年份：2019

卷号：242

起止页码：911

外文期刊名：Applied Energy

收录：EI(收录号：20191206658003)

语种：英文

外文关键词：Electrolysis - Carbon - Hydrocarbons - Fischer-Tropsch synthesis - Solid oxide fuel cells (SOFC) - Carbon dioxide - Electrodes - Electric energy storage - Electrolytic cells - Synthesis gas

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 H2 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. ? 2019 The Authors