SU1219152A1 - Spraying drier - Google Patents

Description

The invention relates to a technique of drying and spraying suspensions and can be used in a drying technique used disc centrifugal drivers in the production of fodder yeast in the hydrolysis, spin and pulp and paper industries.

The aim of the invention is to reduce the energy consumption for obtaining a marketable product by increasing the degree of depletion of the heat carrier potential.

1 shows a spray dryer, a general view; figure 2 - section aa in figure 1; on fig.Z - disk sprayer, longitudinal section; 4 shows the working surface of the chambers of the drying unit, top view; on fig.Z - section BB on 4mg.4.

The spray dryer contains a dispenser having a coaxially arranged upper disk 1 and a lower expansion disk 3 mounted on a drive shaft 2 with pressure elements 4 on its working surface 5 and with a pointed spray edge 6 protruding beyond the edge 7 of the upper disk 1.

The spray dryer also contains a spray atomisation unit that encircles the disk atomizer and is made in the form of spray guns placed on both sides of the plane to form a drying cavity 8 of the upper and lower chambers 9 and 10 with blades 1I in the direction of movement of the sprayed product, and blades 1J lower chambers 10 are displaced relative to blades I1 of the upper chamber 9 on working surfaces 12, o

Chambers 9 and 10 are in communication with the source 13 of the coolant supply.

In addition, the dryer is provided with a peripheral wall 14 connecting the upper and lower chambers 9 and 10 and an additional chamber 15c blades 16 mounted at an acute angle to the blade of the drying chamber 9 and 10, while the peripheral wall 14 and the additional chamber 15 are connected one with the other aperture 17, and the blades 11 of the upper and lower chambers 9 and 10 of the drying unit are arranged in concentric circles with offset of the blades 11 of each

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follow the circle relative to the previous one.

The width, length and angle of elevation of the blades 11 increase to the peripheral wall 14,

Additional camera 15 is equipped with a cyclone 18, communicated with the camera

15 bore 19, exhaust pipe 20 and discharge cone 21, and the cyclone 18 is made with exhaust pipe 22

and a discharge cone 23. A paraplate 24 is provided for feeding the yeast suspension.

Spray dryer works as follows.

A yeast suspension with a concentration of 600-800 g / l over pipe 23 is injected onto the spray disk 3 rotating on the drive shaft 2, and the pressure elements 4 move along the working surface 4 beyond the edge 7 of the upper disk 1, and is sprayed from the pointed spray edge 6 between the workers with surfaces of 12 chambers 9 and 10, where it is treated with coolant supplied from source 13 and flowing out between the blades P of the working surfaces 12 of chambers 9 and 10.

An increase in the height of the blades of 11 pt of the center to the peripheral wall 14 ensures the involvement of the atomized product in the vortex motion with minimal expenditure on the message of kinetic energy. The same purpose is a consistent increase in the flow areas of the blades 11 from the center to the periphery.

Formed with gas product mixture through the hole 17 in the peripheral wall 14 enters the additional chamber 15, where the blades

16, the product is separated and withdrawn through the discharge cone 21, and the spent coolant is discharged through the exhaust pipe 20. A part of the gas production mixture is separated by blades 16

and through the opening 19 is sent to the cyclone 18, where the product is separated and discharged through the discharge cone .23, and the treated coolant is discharged through the exhaust pipe 22. Combining the treatment process in series between chambers 9 and 10 and then in the additional chamber 15 and cyclone 18 provides deep exhaustion of the coolant and obtaining at the exit of the product with the specified product parameters.

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Compiled by A. Chal-Boru

Editor L.Gratillo Tehred A.Aliev Proofreader E.Sirohman

Order 1105/11 Circulation 681 Subscription

VNII1SH of the USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035

(1st PPP Patent, Uzhgorod, Proektna St., 4

Fug.t

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Claims (1)

A SPRAY DRYER containing a disk atomizer having a coaxially arranged upper disk and a lower spray disk mounted on the drive shaft with discharge elements on its working surface and with a pointed spray edge protruding beyond the edge of the upper disk, a spray product drying unit wrapping around the disk spray gun, made in the form of placed on both sides of the plane of the spray torch with the formation of a drying cavity, upper and lower chambers with blades in the direction of spray movement Vai product, wherein the lower chamber are offset relative to the blades of the blade top cata measures _x working surface, characterized in that, to reduce energy consumption for a commercial product by increasing the degree of exhaustion capacity of the coolant, it snab-. wife with a peripheral wall connecting the upper and lower chambers, and an additional chamber with blades mounted at an acute angle to <$ the blades of the chambers of the drying unit, while the peripheral wall and the additional chamber are connected one to another hole, and the blades of the upper and lower chambers of the drying unit are placed along concentric circles with the displacement of the blades of each subsequent circle relative to the previous one. ^ 16SH ^PP W 1 I2l