DRYER FOR SOLUTIONS AND SUSPENSIONS Russian patent published in 2018 - IPC F26B17/10 

FIELD: technological processes.

SUBSTANCE: invention relates to the drying of dispersed materials and can be used in microbiological, food, chemical and other industries. This is achieved by the fact that in a solution and suspension dryer containing a housing in which an acoustic pneumatic nozzle for dried material supply is arranged, which is sprayed under the effect of flue gases with a temperature of up to 900 °C, formed during the drying process granules of the material fall onto the gas distribution grid and are finish drying in the fluidized bed created by the heat carrier entering the lower part of the housing under the grate with a temperature of up to 200 °C, which comes through the lower part of the body, separated from the body conical part by a gas distribution grid by means of a cup with a perforated bottom, through which comes a heat carrier with a temperature of up to 200 °C, and the heat carrier is removed through the gas distribution grid holes into a trapping system consisting of an acoustic installation, a cyclone and a bag filter. Nozzle is made in the form of an acoustic nozzle for spraying liquids in the form of a housing with placed inside an acoustic oscillations generator in the form of a nozzle and a resonator, branch pipes for air and liquid supply. Acoustic oscillation generator is made in form of conical nozzle coaxial with housing and having annular throttle opening with external diameter dc formed by nozzle cut and resonator rod of diameter dct, and annular cavity resonator of length h formed by resonator rod and cylindrical cavity with external diameter dp in fastening member. Volumetric resonator cavity is spaced from nozzle cut at distance b. An air pipe is perpendicular to a body axis and connected to a ring cavity formed by a cylinder and an internal surface of the body. At that, a cage with throttling holes coaxial with the ring throttle hole and a coaxially attached resonator rod are fixed on the roller. Sprayed fluid is supplied through the branch pipe, located perpendicular to body axis, to annular cavity formed by casing and nozzle external surface. At that, one end of the casing is made solid and is connected to the housing, and in the other end, enclosing the conical nozzle, throttling openings are made coaxial with the annular throttle opening. From the side, opposite to resonant cavity, there is adjustment mechanism in form of hand wheel with packer mounted on free cylinder end. External diffuser is coaxially attached to the nozzle casing. To the annular volumetric resonator with the resonator rod fastening element an internal perforated diffuser is coaxially attached in such a way that the external and internal diffusers output sections lie in one plane perpendicular to the axis of the annular volumetric resonator. Additional flow divider coaxially attached to the external diffuser is made in the form of a cylindrical shell, at the end part of which a perforated plate is fixed on the side opposite the diffuser.

EFFECT: increase in drying performance.

1 cl, 2 dwg