The invention relates to the field of
spray drying devices, in particular to a
spray drying device for strengthening
interphase heat transfer, which comprises a
spray drying tower body, an upper section
tower body, a middle section
tower body, a lower section tower body, a
flue gas distribution plate A, a
flue gas distribution plate B and a spray gun, an upper section tower body with a conical structure is welded at the upper end of the middle section tower body; a lower section tower body with a conical structure is welded at the lower end of the middle section tower body; the middle-section tower body adopts a cylindrical structure; the invention provides an innovative
flue gas distribution plate
trepanning form and a spray gun arrangement form, and the
trepanning form of the
flue gas distribution plate is adjusted, so that the
trepanning circle center position of the large hole in the
flue gas distribution plate is overlapped with the axis of the spray gun, and high-temperature
flue gas is concentrated near the
spray nozzle after passing through the distribution plate and can completely cover liquid drops sprayed by the
spray nozzle; therefore, under the condition of ensuring reasonable pressure drop in the tower, the heat exchange efficiency between the high-temperature flue gas and the cold
slurry is greatly improved, and meanwhile, large-area adhesion of the
slurry in a wet particle state is avoided.