Organic liquid hydrogen supply system integrated with high-temperature heat pump

Abstract

The invention discloses an organic liquid hydrogen supply system integrated with a high-temperature heat pump, which belongs to the technical field of organic liquid hydrogen storage. The system comprises a storage unit, a heat exchange unit, a dehydrogenation reaction unit, a gas-liquid separation unit, a hydrogen distribution unit and a compression type gas heat pump unit which are sequentially connected from front to back. By supplying sufficient hydrogen to the hydrogen distribution unit, the hydrogen distribution unit continuously supplies hydrogen to the outside and the compression type gas heat pump unit at the same time, and hydrogen generated by the hydrogen distribution unit burns and acts in the compression type gas heat pump unit to drive an internal compression type heat pump to continuously release heat, and serves as a reliable heat source suitable for an endothermic reaction in the dehydrogenation unit. The high energy utilization efficiency of the gas heat pump is utilized, the fire loss in the traditional hydrogen catalytic combustion and heat transfer process is reduced, a proper heat source is found for a dehydrogenation unit, external heat supply is not needed, the hydrogen supply efficiency is improved, and the system is widely applied to various mobile devices.

Description

technical field [0001] The invention belongs to the technical field of organic liquid hydrogen storage, in particular to an organic liquid hydrogen supply system integrating a high-temperature heat pump. Background technique [0002] As a promising new energy source, hydrogen energy will replace existing energy storage technologies such as lithium-ion batteries by virtue of its high energy density, cleanliness and pollution-free advantages. [0003] The large-scale utilization of hydrogen energy is facing more challenges, and the current main hydrogen storage methods have various shortcomings. For example: high-pressure gaseous hydrogen storage is widely used and the cost is low, but hydrogen charging and discharging require a high-pressure environment and there are safety hazards; metal hydride hydrogen storage is safe and stable and the pressure is low, but the metal hydride itself has a large mass, and the hydrogen charging and discharging process is expensive. Due to th...

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Problems solved by technology

However, part of the heat quality is wasted in the combustion process, and if the system is coupled with the fuel cell for external power supply, the waste heat of the fuel cell is difficult to utilize, and the energy efficiency of the system is not competitive, which limits the further application of organic liquid hydrogen storage technology

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