Independent solar phase change cascade heat storage indirect thermal drive CO2 removal system

Abstract

The invention provides a system for indirectly driving CO2 removal through thermal power by means of independent solar energy phase-change stepped heat storage. The system comprises an absorber, a solution pump, a solution heat exchanger, a desorption generator, a condensation liquid collector and a CO2 compressor which are sequentially connected with a smoke preprocessing unit. A medium-temperature heat collection assembly absorbs solar energy to serve as a desorption heat source. A phase-change stepped heat storage device is formed by sequentially connecting multiple sections of phase-change heat storage materials of different phase-change temperatures in series according to the high-to-low phase-change temperature sequence. In the system, a solar energy heat collector and a carbon dioxide removal system are organically combined together; the system aims at breaking through the technical bottleneck that an existing decarbonization device is high in regenerated thermal power drive energy consumption, and overcomes the defect that reliability is not enough when thermal power drive is directly provided through solar energy; and meanwhile, heat collection is conducted on solar energy by adding the stepped phase-change heat storage materials so that energy can be stored, the heat exchange temperature differences between a heat exchange medium and the phase-change heat storage materials are kept, and while the heat exchange effect is enhanced the reliability is improved when solar energy is used as a thermal power drive heat source.

Description

technical field [0001] The invention relates to a technology for removing CO2 driven by thermal power, in particular to a system for removing CO2 driven by independent solar phase change cascade thermal storage and indirect thermal power. Background technique [0002] The combustion of fossil fuels has led to a gradual increase in the concentration of carbon dioxide in the atmosphere, and the global climate is becoming increasingly warmer. After the removal of C02, the flue gas is discharged into the air and becomes an important strategic option to deal with climate change. Therefore, the key to tackling global climate change and acid rain pollution is to control carbon dioxide emissions. The recovered and separated carbon dioxide has a wide range of industrial application values. It can not only be used as a source of carbon elements, but also can generate a variety of carbon products related to the national economy and people's livelihood through different reaction pathway...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the technical bottleneck of high energy consumption of regenerative thermal drive of existing decarbonization equipment, and at the same time overcome the shortcomings of insufficient reliability of thermal drive directly provided by solar energy

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