Hydrogen-steam combined cycle power generation system and method based on aluminum-water reaction

Abstract

The invention discloses a hydrogen-steam combined cycle power generation system and method based on aluminum-water reaction. The hydrogen-steam combined cycle power generation system comprises a solar photo-thermal heat supply system, a renewable energy source power supply electrolytic aluminum oxide regeneration device, an aluminum-water reactor, a heat exchanger, a condenser and the like. Aiming at the problems of difficulty in reaction starting and low reaction degree of the aluminum fuel, the reaction degree and the reaction efficiency are improved by adopting a mode of coupling multiple activation modes. Aiming at the problem of waste heat utilization of the system, reaction water and generated water in the system are utilized to form cyclic utilization, heat exchange and heat supply are carried out, closed-loop heat exchange is carried out on water introduced into the system, and heat loss is reduced. Water in the system can be recycled, but part of water vapor is lost in the circulation process, and water needs to be supplemented regularly to continue the reaction. The aluminum-water reaction product and the water vapor are both used for power generation, carbon emission is basically not involved in the circulating power generation process of the system, renewable energy sources and solar energy are mainly used for power supply and heat supply, and the environmental hidden danger in the power generation process is reduced.

Description

technical field [0001] The invention relates to a hydrogen-steam combined cycle power generation system and method based on aluminum-water reaction. Background technique [0002] Energy is the cornerstone of the continuous development of human society. With the increasingly serious environmental problems such as the greenhouse effect and air pollution, the power generation system based on traditional fossil energy is facing enormous pressure. With the continuous advancement of the energy structure reform process in various countries in the world, the instability and uncertainty of renewable energy have promoted the continuous development of large-scale and long-term energy storage technology. The metal fuel has a high content of aluminum crust, and has a relatively mature industrial process for recycling. It is stable in nature, safe and non-toxic, and is convenient for transportation. In theory, in-situ reactions can be realized where there is water, which solves the transp...

AI Technical Summary

Problems solved by technology

Among them, lye activation is cheap and easy to operate, but it has high requirements for equipment and materials, and the preparation process of adding additives to aluminum fuel is complicated. Although it can reduce the reaction conditions, it is difficult to store the composite material, and it contains other elements that are difficult to recycle. And high temperature activation is conducive to the recycling of reaction products, but the realization cost is high

Aluminum fuel is often used in underwater propellants, solid rocket propellants, hydrogen production and batteries, etc. Aluminum-water reaction releases a large amount of hydrogen and heat. At present, most applications cannot effectively use both at the same time. Propellants mainly use reaction heat, and the generated Hydrogen is directly discharged, and the hydrogen production industry mostly directly discharges heat into the air, resulting in unnecessary waste of a large amount of heat energy

However, the existing systems based on the aluminum-water reaction have low energy utilization efficiency, high power generation costs, and insufficient use of heat in the reaction process, making it impossible to achieve large-scale applications.

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