Thermal energy recovery systems for non-contact temperature detection of molten steel in steelmaking process

A thermal energy recovery auxiliary system for temperature detection of molten steel in a steelmaking process, comprising:

• an electric arc furnace, wherein a flue communicates with a side wall of the electric arc furnace;
• a water supply device including a water supply tank, a water supply pipeline of an electrolytic cell, and a thermal energy recovery component, wherein the water supply tank supplies water to the thermal energy recovery component via a water supply pipeline of a steam generator of the thermal energy recovery component, the water supply tank supplies water to the electrolytic cell via the water supply pipeline of the electrolytic cell, and the thermal energy recovery component exchanges heat with the flue to generate steam;
• a power generation system including a Seebeck-effect thermoelectric power generation component and the electrolytic cell, wherein the Seebeck-effect thermoelectric power generation component includes a thermoelectric generator, a voltage stabilizer, a rechargeable battery, and an electrolytic water device, the thermoelectric generator, the voltage stabilizer, and the rechargeable battery form a closed loop, and the rechargeable battery and the electrolytic water device form a closed loop, the electrolytic water device is arranged in the electrolytic cell, and the electrolytic cell communicates with the water supply pipeline of the electrolytic cell, a high-temperature side of the thermoelectric generator exchanges heat with the flue and generates a electromotive force in the electrolytic cell;
• a piston oxygen compression device, which forms a steam containment chamber and an oxygen containment chamber through a piston isolation, wherein the steam containment chamber communicates with the thermal energy recovery component and the oxygen containment chamber communicates with the electrolytic cell;
• one or more non-contact temperature measurement devices, one end of each of the one or more non-contact temperature measurement devices communicates with the oxygen containment chamber and the other end of each of the one or more non-contact temperature measurement devices communicates with an interior of the electric arc furnace.