Novel regenerative-type transcritical device for recovering residual heat of flue gases

The utility model relates to a novel regenerative-type transcritical device for recovering the residual heat of flue gases, and the device is used for utilizing the transcritical low-temperature residual heat of tail gases of a heating furnace or a reactor applied to the petroleum refining, chemical engineering, and the like. The device comprises a cabinet (16). A plurality of groups of regenerative-type heat collectors (6), each group of regenerative-type heat collectors (6) is provided with a flue-gas inlet branch (10), a flue-gas outlet branch (15), an air inlet branch (18), and an air outlet branch (13), a flue-gas inlet valve (9), a flue-gas outlet valve (7), an air inlet valve (5) and an air outlet valve (8); the flue-gas inlet and outlet branches, and the air inlet and outlet branches of each group of the regenerative-type heat collectors (6) are connected with flue-gas inlet and outlet manifolds (11) and (16), and the air inlet and outlet manifolds (17) and (14); liquid-drainage liquid-seal pipes (20)