This utility model discloses a superimposed
energy storage device utilizing
waste heat and surplus electrical energy, comprising a high-temperature
kiln and, sequentially arranged side-by-side, an air electric heater, a hot air thermal storage furnace A, a hot air thermal storage furnace B, a hot air thermal storage furnace C, and a
waste heat boiler. The high-temperature
kiln is connected to the lower ends of the air electric heater, hot air thermal storage furnace A, and hot air thermal storage furnace B via pipes. The upper end of the air electric heater is connected to the upper ends of the hot air thermal storage furnace A, hot air thermal storage furnace B, hot air thermal storage furnace C, and the
waste heat boiler via pipes. The high-temperature steam generated by the waste heat boiler drives a
steam turbine to generate
electricity, while the surplus wind and
solar power are used to power the air electric heater. This technical solution effectively utilizes the medium-temperature
flue gas generated by the high-temperature
kiln for
energy storage and conversion, increasing the temperature of the medium-temperature
flue gas and thus improving the efficiency of converting the heat from the medium-temperature
flue gas into electrical energy. Furthermore, it fully utilizes surplus wind and
solar power energy.