PLANT OF ZEOLITE DRYING AND TEMPERING Russian patent published in 2009 - IPC F26B3/12 

FIELD: heating, drying.

SUBSTANCE: invention relates to drying method of solutions with the production of granulated product with high hygroscopic properties and may be used in different chemical techniques and related engineering where high requirements are applied to the final product dampness. The plant for zeolite drying and tempering includes plunger pump for initial solution supply, additives separation filter, distributing lattice intended for catalyst drying and granulation of the solution, cyclone cell system to catch finished product and supply it screw-type of belt conveyor of the dried-out product. The plant also comprises a fan and thermal generator. Recycle flow, i.e. insignificant small items are supplied to Venturi scrubber by smoke exhauster through the filter. Recycle flow is collected in the tank and solution is supplied to the scrubber. Drying agent is supplied to tempering plant by the fan through thermal generator. The unloading device supplies dried-out product from tempering plant to air-powered transport cyclone by means of air-powered transport fan through the filter. Initial solution supply system is implemented with acoustic injectors containing housing with ultrasonic vibration generator represented with nozzle and annual resonant chamber. The housing is realised as vertical cylindrical bushing having pipe for air supply installed in the upper part. The pipe for solution supply is located perpendicular to the above pipe axis. In addition, the bushing with top and bottom flanges is rigidly fastened inside the housing and in axial alignment to it. The bottom flange is rigidly fixed in the groove made in the housing. Annular resonant chamber represented with the cup with coned surface is installed coaxially inside the bushing. The cup is molded on resonator rod having d diameter. The tailpiece of resonant chamber includes locking discs represented with elastic lobes interacting with the internal surface of bushing. At least, one nozzle is positioned in bottom flange at an angle to resonant chamber axis. The value of angle varies from 20° to 40°. The nozzle axis is continued on the circle being in the middle part of cone-shaped surface. Coaxial cone-shaped and cylindrical openings are made on the internal surface of bushing.

EFFECT: improvement of drying and tempering effectiveness.

2 cl, 2 dwg