Carbon dioxide power generation system adopting oxygen-enriched combustion integrated with solar dry methane reforming

Abstract

The invention discloses a carbon dioxide power generation system adopting oxygen-enriched combustion integrated with solar dry methane reforming, and belonging to the field of solar-assisted thermal power generation. The system is mainly composed of a solar reforming reactor, a multi-flow heat exchanger, a compressor, a combustion chamber, a turbine, a heat regenerator, an air separation device and other parts. In the system, the gathered high-temperature solar energy provides heat for a catalytic reforming reaction for methane and carbon dioxide, the generated synthesis gas is subjected to oxygen-enriched combustion and direct heating to drive supercritical carbon dioxide to generate power, and combustion products can be separated from tail gas; carbon dioxide generated due to thermal power generation can be used for fuel synthesis, and resource utilization is carried out; and according to the system, efficient recovery for heat exergy and pressure energy is realized by additionally arranging the multi-flow heat exchanger and the low-pressure turbine. According to the system, the influence of solar fluctuation on power cycle can be reduced by integrating the solar energy at a fuelside; and meanwhile, the zero release of carbon-based fuel power generation is realized through supercritical carbon dioxide power cycle adopting oxygen-enriched combustion and direct heating.

Description

technical field [0001] The invention belongs to the field of solar-assisted thermal power generation, and in particular relates to an oxygen-enriched combustion carbon dioxide power generation system integrating solar methane dry reforming, in particular to a solar-driven methane and carbon dioxide catalytic reforming reaction integrated in oxygen-enriched combustion direct heating supercritical carbon dioxide power generation system. Background technique [0002] Solar energy is widely distributed, abundant in reserves, clean and renewable, and is regarded as one of the most promising green energy sources. At the same time, the volatility and intermittency of solar energy restrict the development of solar energy. Integrating solar energy into thermal power generation is considered to be an effective way to efficiently utilize solar heat in the near and medium term. Usually, solar energy assists thermal power generation by heating circulating working fluids (such as feed wa...

AI Technical Summary

Problems solved by technology

Using the synthesis gas produced by methane carbon dioxide reforming for traditional gas turbine power generation can achieve high energy utilization efficiency and effectively reduce carbon emissions due to the input of solar energy; however, it is still impossible to avoid the emission of carbon dioxide and other pollutants, and The methane dry reforming reaction requires carbon dioxide as a reactant, often requiring additional carbon capture equipment

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