Carbon dioxide circulation power generation equipment system suitable for rural areas

Abstract

The invention discloses a carbon dioxide circulation power generation equipment system suitable for rural areas. The carbon dioxide circulation power generation equipment system suitable for the rural areas mainly comprises a biomass furnace CO2 energy storage device, a solar CO2 energy storage device, a steady flow regulator, a liquid CO2 storage tank, a CO2 high-pressure pumping device, a turbine motor/a piston type expansion machine, an electric generator, a heat regenerator, a cooler and a compressor, wherein the solar CO2 energy storage device comprises a light collecting CO2 energy storage device and a lens energy gathering device. The carbon dioxide circulation power generation equipment system suitable for the rural areas has the advantage that a large quantity of renewable biomass resources and solar energy in the rural areas can be conveniently used as energy sources, operation is stable, self-energy consumption is low, investment is low, and operation cost is low and the like.

Description

technical field [0001] The invention relates to the field of low-carbon and energy technologies, in particular to an equipment system for rural carbon dioxide cycle power generation that uses carbon dioxide as a working fluid and utilizes solar energy and / or biomass as energy. Background technique [0002] Climate change has become one of the issues that affect human survival and development, and a large amount of carbon dioxide emissions are considered to be the main cause of climate warming. As the largest developing country in the world, coal-based primary energy and firepower The secondary energy structure dominated by power generation, with the rapid growth of economic aggregate, the CO of primary energy and secondary energy 2 Emissions are characterized by rapid growth and large volumes. In response to climate change, the development of low-carbon energy, especially renewable energy and new energy, has become a consensus. Biomass power generation, solar power generatio...

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Problems solved by technology

[0005] In terms of solar power generation, the solar power generation system using water as the working medium has been maturely applied, and the CO 2 Technical workers at home and abroad have also conducted a lot of research on the solar power generation system as the working medium. The more mature solar heat collection system schemes adopted are trough solar collectors, tower solar collectors, and dish solar collectors. However, there are three basic problems that are difficult to solve in the above-mentioned schemes. First, it takes up a lot of space and investment, and the construction of solar heat collection systems has high requirements for site selection, which cannot be met by general rural sites. The requirement of building a solar thermal collection system, and the large space field of the existing solar thermal collection system has a great impact on the ecology; second, it can only generate electricity during the day and stop at night. For this reason, some researchers have provided The heat storage of other materials is reserved for the technical scheme of generating electricity at night, but the scheme of storing heat energy with a large amount of molten salt and other materials, regardless of the investment size and feasibility, will inevitably have safety hazards and environmental pollution hazards for the rural environment and personnel quality; The third is that the temperature and pressure of the supercritical carbon dioxide supplied to the turbine of the supercritical carbon dioxide power generation system change with the intensity of sunlight during the day and the movement of sunlight, resulting in large fluctuations in output power, voltage, and current, and excessive output power and voltage. Current fluctuations will be extremely unfavorable for domestic and production electricity consumption

Most of the existing methods of using solar power to generate electricity are extremely incompatible with the vast rural situation

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