SU1437650A1 - Installation for drying dispersed materials - Google Patents

Description

(21) 4161796 / 24-06

(22) 11.12.86

(46) 11/15/88. Bul No. 42

(72) Yu. F. Korotkov, R. G. Galiullin,

V.N. Podymov and I.P. Revva

(53) 66.047.075.1 (088.8)

(56) Kasatkin A.G. Basic processes and apparatuses of chemical technology. M .: Himi, 1974, p. 659-661, fig. 15-27.

USSR Author's Certificate No. 1044911, cl. F 26 B 3/12, 1982.

(54) INSTALLATION FOR DRYING DISPERSE MATERIALS

(57) Invention m. used in food, chemical, pharmaceutical and microbiological industries. The purpose of the invention is to improve the quality

drying dispersed materials. The installation contains a drying chamber 1 with a prechamber 6 in the upper part, equipped with a piston resonator 10, facing down with an open end. The resonator 10 is installed in the prechamber 6 with an annular gap. The open end of the resonator 10 is located above the lower base of the prechamber 6 at a distance equal to (2-3) d, where d is the diameter of the resonator. The installation makes it possible to create a vacuum in the prechamber 6 when the gas is emitted by the cavity, and also to exclude the ingress of the source material into the cavity during the gas intake period. Placing the lower end of the resonator at a distance equal to (2-3) d allows to obtain a pulsating jet at the outlet of the pre-chamber 6. 1 il.

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four

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The invention relates to a drying technique and can be used in the food, chemical, pharmaceutical and microbiological industries.

The aim of the invention is to improve the quality of drying.

The drawing shows schematically the proposed plant for drying dispersed materials.

The installation includes a drying chamber 1, a nozzle 2 for the release of dried material, nozzles 3 and a device 5 for introducing the starting material, prechamber 6 with nozzle 7, cyclone 8, screw 9, piston resonator 10 with piston 11, heater 12, nozzles 13-16.

 Piston resonator 10 is installed in: a prechamber 6 with an annular gap, coac-: sially open end down, while its open end is located above the lower one: the base of the prechamber is:, equal to (2-3) d, where d is the diameter of the torus.

I The nozzle 13 of the heater 12 is connected to the i-pipe 16 of the cyclone 8, and the nozzle 14 to the pre-chamber 7 of the prechamber 6. The nozzle 5 of the cyclone 8 is connected to the nozzle 3 of the drying chamber I.

The installation works as follows.

In the piston resonator 10 by

oscillations of the piston 11 with a resonant frequency

periodic shock waves are excited

large amplitude. In the period of injection

gas corresponding to the movement of the piston

11 down from the resonator 10 to the dryer

; chamber 1 is ejected by a jet of gas having a high kinetic energy.

| When this jet interacts with the source material entering the drying chamber 1 through the input device 5

(source material,

crushing the last

massive drying in

flow.

The dried material through the pipe 2 is dumped on the screw 9, and the

there is a thin on the drop and intensive gas.

during the drying process, steam is released from the drying chamber 1 through the nozzle 4.

The gas that has reacted with the material is directed from the drying chamber 1 through the nozzle 3 to the cyclone 8, where it is separated from the suspended particles. The purified gas through the cyclone tube 8 enters the heater 12, in which it is heated and fed to the prechamber 6. Due to the fact that the open end of the resonator 10 is located above the lower base of the prechamber 6, when the gas is ejected by the resonator 10 in the prechamber 6 a vacuum is created. As a result of the resulting pressure drop in the prechamber 6 and the heater 12, the heater gas rushes into the prechamber and the resonator 10. As the piston 11 moves upwards, this process is enhanced.

The ingress of the source material into the resonator 10 during the period of aspiration, and is excluded, since some gas is ejected from the resonator 10 in the form of a jet. The ejection occurs from the region, directly adjacent, to the open end of the resonator 10, i.e. from forkggu-zry 6. At a distance equal to 2-3 diameters of the open end of the resonator, there is no back gas about suction of the gas in the suction, because the bottom 0

five

0

This end of the resonator

The distance, by raviom 2-3 to the diameters of the open end of the resistor 10 iia, i to the lower base of the prechamber 6, allows to obtain a fork at the output. ieri 6 pulsating jet.

The use of the proposed plant improves the quality of drying.

Claims (1)

Invention Formula A plant for drying dispersed particles containing a drying chamber with a forks / 1B of the upper part, equipped with a piston rezopator, turned open with a torp, downwards, in order to improve the quality of drying, The resonator is installed in a chamber with an annular gap, and its open end is located above the bottom of the forka.mery at a distance equal to the resonator meter. 9. L Where