Zero-release electricity generation system and method using solar energy to drive thermal decomposition of carbon dioxide

Abstract

The invention discloses a zero-release electricity generation system and method using solar energy to drive thermal decomposition of carbon dioxide in the field of solar thermal electricity generation. The zero-release electricity generation system mainly comprises a solar high-temperature thermal chemical reactor, a heat regenerator, a gas storage chamber, a combustion chamber, a turbine, a compressor, a pump and the like. In the system, collective high-temperature solar energy provides heat for thermal chemical decomposition of carbon dioxide, produced carbon monoxide and oxygen are pressurized and fed into the combustion chamber to be combusted for direct heating, and carbon dioxide is driven for power cycle generation. Surplus carbon monoxide and oxygen produced by thermochemistry arestored in the gas storage chamber to adapt to the change of solar radiation intensity. The system utilizes solar energy high-temperature thermal chemical reaction for stable energy storage, and efficient clean electricity generation is conducted through the carbon dioxide power cycle. The two are coupled, so that influence of solar energy fluctuation on electricity generation units is avoided, andefficient and stable output of solar thermal electricity generation is realized.

Description

technical field [0001] The invention belongs to the field of solar thermal power generation, and in particular relates to a zero-emission power generation system and method using solar energy to drive the thermal decomposition of carbon dioxide; specifically, a carbon dioxide power generation system based on high-temperature thermochemical solar fuel integrated with oxygen-enriched combustion for direct heating . Background technique [0002] Solar energy is the renewable energy with the most abundant reserves, and the solar energy that reaches the earth's surface every hour can almost meet the current energy demand of human beings in a year. However, traditional photothermal and photovoltaic power generation are greatly affected by the fluctuation and intermittency of solar radiation intensity. In order to ensure the stable output of power, energy storage technology is often required. Solar thermochemistry is considered to be a very potential energy storage method for conv...

AI Technical Summary

Problems solved by technology

However, the conventional oxyfuel combustion directly heated supercritical carbon dioxide power cycle uses conventional fossil energy as fuel, and the oxygen required for combustion often comes from the air separation unit with huge power consumption, and the combustion products contain sulfide, nitrogen oxides and Impurities such as moisture require complex purification and separation devices

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