FANG Yu, LIU Taixiu, ZHAN Junnan, et al. A Hydrogen and Power Co-generation System Coupling Natural Gas Chemical Looping with Fuel Cells[J]. Journal of Xi'an Jiaotong University, 2026, 60(5): 59-70.
DOI:
FANG Yu, LIU Taixiu, ZHAN Junnan, et al. A Hydrogen and Power Co-generation System Coupling Natural Gas Chemical Looping with Fuel Cells[J]. Journal of Xi'an Jiaotong University, 2026, 60(5): 59-70.DOI: 10.7652/xjtuxb202605006.
A Hydrogen and Power Co-generation System Coupling Natural Gas Chemical Looping with Fuel Cells
e goal of low-carbon and efficient hydrogen production from natural gas
and to address the issues of high reaction temperature (above 800℃)
low energy conversion efficiency
and high carbon dioxide emissions in the traditional steam reforming hydrogen production process
a natural gas water-based chemical looping hydrogen generation (CLHG) method is proposed. This method is coupled with a solid oxide fuel cell (SOFC) to realize hydrogen and power co-generation. In the fuel reactor
metal oxides are reduced by natural gas and steam to produce hydrogen-rich gas
which is directly fed into the SOFC for power generation. A micro gas turbine (MGT) is integrated to achieve energy cascade utilization of the SOFC exhaust. The reduced metal oxides are oxidized by steam to generate pure hydrogen and are then reoxidized by air to their initial state while releasing heat
enabling self-thermal reforming hydrogen production via chemical looping. Based on the established thermodynamic model
thermodynamic analysis and irreversibility analysis of the system were conducted. The results show that under design conditions
the system achieves an energy conversion efficiency of 69.97%
an exergy efficiency of 67.04%
and a CO
2
capture rate of 91.39%. Compared with the traditional natural gas reforming hydrogen production process
this system reduces the hydrogen production reaction temperature from above 800℃ to approximately 600℃ while significantly reducing carbon emissions. Key processes of the system were experimentally tested
confirming the feasibility of the natural gas water-based chemical looping hydrogen generation system. This study provides a new pathway for the efficient and low-carbon utilization of natural gas and demonstrates the feasibility of coupling hydrogen production with fuel cells.
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