ENERGY PRODUCTION SYSTEM BASED ON CARBON DIOXIDE AND ENERGY PRODUCTION METHOD BASED ON CARBON DIOXIDE

摘要

The purpose of the present invention is to provide an energy production system based on carbon dioxide, the energy production system using collected carbon dioxide, wherein the carbon dioxide is used, as needed, as a medium enabling multiple power generation. The energy production system is characterized by comprising: a liquefied carbon dioxide conversion unit that compresses and liquefies carbon dioxide collected from any one or more of industrial emissions of a thermal power plant, a steel plant, a cement plant, and a chemical plant or the atmosphere into liquefied carbon dioxide by means of electric power or surplus electric power; a storage unit that stores the liquefied carbon dioxide; a carbon dioxide-side heat exchange unit that converts the liquefied carbon dioxide supplied from the storage unit into expanded and evaporated carbon dioxide by heat exchange with a low-boiling heating medium; a carbon dioxide turbine power generation unit that performs power generation based on the expanded and evaporated carbon dioxide delivered from the carbon dioxide-side heat exchange unit; a buoyancy power generation unit that performs buoyancy power generation based on a residual pressure of the carbon dioxide used in the carbon dioxide turbine power generation unit; a heat source-side heat exchange unit that is supplied with a heat source from the outside and converts the low-boiling heating medium from a liquid into an expanded and evaporated gas of low-boiling heating medium by heat exchange; and a binary power generation unit that performs power generation based on the expanded and evaporated gas of low-boiling heating medium delivered from the heat source-side heat exchange unit.