Novel amino thermochemical energy storage system

Abstract

The invention discloses a novel amino thermochemical energy storage system. An amino thermochemical reversible reaction is adopted and the energy storage is performed through the mutual conversion among the electric energy, the thermal energy and the chemical energy, wherein the formula is as follows. The novel amino thermochemical energy storage system mainly comprises a storage unit, an energy storage unit, an energy release unit, a thermal storage tank and the like. During energy storage, a heat absorption decomposition reaction of the ammonia is produced under the action of a catalyst and the accepted energy is stored in the gaseous decomposition product nitrogen and hydrogen in forms of chemical energy and pressure energy through compression. During energy release, a reversible thermochemical reaction of the nitrogen and the hydrogen is produced under the action of a catalyst, the stored chemical energy is converted into the high grade thermal energy to be released for steam power generation, and the power generation is performed through reaction product gas expansion. The novel amino thermochemical energy storage system has the advantages of being high in energy storage density, high in efficiency, environmentally-friendly, reliable in application and suitable for various types of power stations comprising renewable energy power stations.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to a novel amino thermochemical energy storage system. Background technique [0002] In the 21st century, energy issues have increasingly become a bottleneck restricting the development of the global economy. The depletion of traditional fossil energy such as coal, oil, and natural gas has made renewable energy such as solar energy and wind energy attract widespread attention. Electric energy storage technology is a key technology for the large-scale utilization of unstable and intermittent renewable energy, and it is also an important means to adjust the peak and valley of the power grid and improve the economy and stability of the power system. Among the current electric energy storage technologies, in addition to the pumped hydropower station and compressed air already operating in large-scale commercial systems, thermochemical energy storage technology provides a new way...

AI Technical Summary

Problems solved by technology

However, the existing amino thermochemical energy storage system still has some problems to be solved, such as the long-term safe storage of hydrogen, nitrogen and liquid ammonia; the energy storage efficiency of the system is low and the scale is small; the reversible reaction conditions are harsh and incomplete Conversion etc.

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