SU1170242A1 - Device for granulating and drying powder-like materials - Google Patents

Abstract

INSTALLATION FOR GRANULATION AND DRYING OF POWDERED MATERIALS, mainly detergents, containing successively connected dispenser, powder dispenser, liquid component sprayer, steam collector humidifier, agglomerator and drying chamber, which, in order to improve the quality of the mash, and the agglomerator and drying chamber, which, in order to improve the quality of granulating material, the agglomerator and the drying chamber are different in that, in order to improve the quality of granulating material, and Between the dispenser and the powder material distributor, a material pre-wetting chamber is additionally installed; the agglomerator is filled as eleskopicheski set i shells and the distributor pulverulent material - in the form of coax (A cial placed inverse cones .ustanovlennyh, with autonomous movement.

Description

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The invention relates to a technique for drying and granulating powdered materials and may find application in the chemical, microbiological, food and other industries.

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

FIG. Figure 1 shows the setup for granulating and drying powdered materials; in fig. 2 section A-A in FIG. one.

The installation includes a hopper 1, a dispenser 2, a chamber 3 for pre-moistening powdered material, a dispenser 4 for liquid components, nents, a dispenser 5, filled in the form of coaxially placed return cones 6, installed with autonomous movement, a humidifier 7 with a steam collector 8, an agglomerator 9, made in the form of telescopically installed shells 10, drying chamber 11, heater 12, cyclone 13, exhaust fan 14, air ducts 15 and 16, and humidifier 17 air

The spray 4 liquid components connected to the tank 18 through the dosing pump 19.

Chamber 3 of the pre-wetting of the powdered material has an inlet pipe 20 and slots 21 for air distribution. The installation works as follows.

The powdered material after the mixer (not shown) enters the hopper 1, from which the dispenser 2 is sent to the pre-wetting chamber 3. In the upper part of the chamber 3 also enters through the duct 16, the pipe 20 and through the slots 21 heated and humidified with the help of a humidifier 17 air in the form of a flat air curtain. Bulk powdered material, the passage of a veil of moist heated air, is partially heated, moistened and supplied through an annular

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the gap between the reverse cones 6 in the humidifier 7, where it is wetted and partially agglomerated.

The flow of warm humid air supplied through the slots 21 and the size of the gap between the reverse cones 6 are adjusted simultaneously so that the pressure in the pre-humidification chamber 3

was close to atmospheric. Thereby, the air curtain of warm, humid air entering the pre-humidification chamber 3 prevents cold from entering.

and dry air with a stream of bulk materials.

In the flow of the gas suspension from the tank 18, the dosing pump 19 through the distributor 4- serves the liquid components and at the same time this gas suspension is treated with saturated steam supplied through the steam collectors 8. Particles of the powdered material

moistened and heated, their surface becomes sticky, which contributes to the formation of granules as a result of the mutual collision of particles. With the help of shells 10 you can

change the area of agglomeration of powders depending on the hygroscopic and agglomerative properties of the components.

Used drying chamber 11 granules

dried in countercurrent with the air heated in the heater 12 and discharged through the lower part of the chamber 11, then dried out, classified and packaged (on

FIG. 1, these nodes are not listed). The exhaust air from the drying chamber 11 is fed to the purification in the cyclone 13

and fan 14 through the duct

15 is emitted into the atmosphere. Part

The exhaust air through the duct 16 is again supplied to the pre-humidification chamber 3.

The proposed installation is characterized by a wide range of conditions.

granulation and high quality granules

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Claims (1)

INSTALLATION FOR GRANULATION AND DRYERS OF POWDERED MATERIALS, mainly detergents, containing a serially connected dispenser, a powder material dispenser, a spray of liquid components, a humidifier with a steam collector, an agglomerator and a drying chamber, characterized in that, in order to improve the quality of granulation and drying, between the dispenser and a distributor of powdered material additionally has a chamber for preliminary wetting of the material, and the sinter is made in the form of telescopically mounted gulls, and S shaped distributor powdered material - in the form of coaxially arranged inverse cone mounted for autonomous movement. SU ... 1170242 • 1