FLUIDIZED BED SPRAY DRYER WITH INERT NOZZLE Russian patent published in 2018 - IPC F26B17/10 F26B3/12 F26B3/88 B05B1/34 

FIELD: technological processes.

SUBSTANCE: invention relates to the technology of drying disperse materials in a fluidized bed and can be used in aniline, food, pharmaceutical, microbiological, food, chemical and other industries. Spray dryer fluid bed with inert packing contains a body with gas distribution grid, vibrating plates, nozzle, vibrating mechanism. Nozzle of the wet feed source feeder comprises a cylindrical body with a fitting rigidly connected to the body and coaxially disposed in the upper part of the housing and having a cylindrical fluid inlet connected to a diffuser that is axisymmetric to the body and the fitting, and in the lower part of the cylindrical hole a hollow conical swirler is fixed, the conical shell of which is fixed by means of at least three spokes fixed at one end to the conical shell of the swirler in its upper part, and at other end – in the annular groove made on the inner surface of the cylindrical hole, on the outer surface of the hollow conical swirler a screw through thread is made, and a sprayer located perpendicular to the axis of the housing is connected to the housing, at its lower part, by means of at least three spokes, and is made in the form of a solid disk, the disk of the atomizer being formed by two surfaces, one of them, facing the diffuser, is a curvilinear surface, and the line forming this surface is a curve of the n-th order, and the other – the plane, or the disk of the atomizer, is formed by two congruent and equidistant surfaces of the n-th order, and the spokes, by which the disk of the sprayer is attached to the body, are straight or curved in shape.

EFFECT: use of the nozzle of the described construction allows to obtain a uniform flow of fine droplet droplets in the range of droplet diameters from 30 to 150 mcm at a water supply pressure of not more than 1 MPa.

1 cl, 2 dwg