Integrated system of LOHC and high-temperature fuel cell

Abstract

The invention discloses an integrated system of LOHC and a high-temperature fuel cell. The system comprises a hydrogenation reaction component for receiving hydrogen, a dehydrogenation reaction component connected to the hydrogenation reaction component, a gas temperature control component connected to the dehydrogenation reaction component and connected to external air and an external fuel gas source for gas or heat exchange, a high-temperature fuel cell power supply component connected to the gas temperature control component, and a high-temperature heat exchanger for transferring the heat energy generated by the power supply component to the dehydrogenation reaction component. The system integrates a solid oxidized fuel cell system with an LOHC system, supplies a large amount of heat energy generated by the high-temperature fuel cell system to the hydrogen-releasing reaction stage of the LOHC through the high-temperature heat exchanger, reduces the self-consumption of the LOHC system, and improves efficiency. Further, the released hydrogen can be used as a fuel supplied to the high-temperature fuel cell system to achieve energy saving and environmental protection.

Description

technical field [0001] The invention relates to the fields of LOHC organic liquid hydrogen storage and fuel cells, in particular to an integrated system of LOHC hydrogen storage and high-temperature fuel cells. Background technique [0002] LOHC (liquid organic hydrogen carrier-based hydrogen) is liquid organic hydride hydrogen storage technology, which can reversibly hydrogenate and dehydrogenate, thereby storing and releasing hydrogen. Organic hydrogen bond complexes are non-explosive, non-toxic, non-flammable, somewhat similar to diesel, and are not classified as dangerous goods. Under ambient pressure, if the ambient temperature is between -39°C and +390°C, this type of hydrogen bond complex will be in a liquid state, which is easy to use and convenient to transport. It is both safe and economical, and is expected to play an important role in the future storage and transportation of hydrogen energy. [0003] LOHC systems always consist of pairs of molecules, namely at ...

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Problems solved by technology

[0008] The problem with LOHC liquid organic hydrogen storage technology is that the hydrogen release temperature of organic hydrides is around 280-350°C, which requires a lot of heat energy. At present, the commonly used technology is to use part of the hydrogen released by combustion or external gas to supply hydrogen for the hydrogen release reaction. energy; this greatly reduces the hydrogen release efficiency and economic benefits of the system

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