SU1277989A1 - Crystallizer - Google Patents

Abstract

The invention relates to the field of chemical industry and allows to increase the productivity of the mold. The crystallizer contains a vertical drum (B) 1, a distributor (P) 2 of the initial solution and, P 3 liquid coolant, made in the form of ring collectors, located at the upper end of B 1 and located respectively outside and inside B 1. The source solution through P 2 is fed on the outside, and the liquid coolant through P 3 - on the inner surface of the rotating B 1 and flow down them in the form of a film. The film mode of flow around the heat transfer surface intensifies the heat exchange process and leads to an increase in the productivity of the crystal (Lysator. 1 Il. C o 00; o

Description

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The invention relates to the field of the chemical industry and can be used to obtain crystalline substances from solutions, especially highly encrusted.

The purpose of the invention is to increase the productivity of the mold.

The drawing shows the mold.

The mold includes the vertical surface of the apparatus as

Ny drum 1 with a drive, distributor 2 of the initial solution, mounted at the upper end of drum 1 outside it, distributor 3 of liquid coolant installed at the upper end of drum 1 inside it, device 4 for removing crystalline deposits, collection 5 suspensions, collection 6 masterbatch solution.

The mold works as follows.

A warm saturated initial solution or its mixture with a cold mother liquor is fed from the distributor 2 to the outer surface of a slowly rotating drum 1 at its upper end and flows along it in the form of a film. The coolant through the hollow shaft enters the distributor 3, from where it is fed to the inner surface of the drum at its upper end, the stack along it is also in the form of a film and cooled it. The spent coolant is discharged from the mold through windows in the lower part of the hollow shaft.

Editor V.Danko

Compiled by B. Kroshkin

Tehred L.Oleynik Proofreader of the City Reshetnik

Order 6782/4 Circulation 663 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moskve, F-35, Raushsk nab., d. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

7798Ч

On the outer surface of the drum, as a result of supersaturation of the cooled solution, crystalline deposits accumulate. They are cut off when running onto the device 4 for their removal and are withdrawn from the collector 5 as a suspension. The mother liquor is removed from the collector 6.

Film wrap around heat 5

0

five

both the crystallizing solution and the liquid coolant allow to intensify the process of heat exchange and make fuller use of the heat transfer surface of the drum.

Claims (1)

The invention relates to the field of the chemical industry and can be used to obtain crystalline substances from solutions that are highly encrusted in particular. The purpose of the invention is to increase the productivity of the mold. The drawing shows the mold. The mold includes a vertical drum 1 with a drive, a dispenser 2 of the original solution, installed at the upper end of the drum 1 outside it, a distributor 3 of liquid coolant installed at the upper end of the drum 1 inside it, a device 4 for removing crystalline deposits, a collection of 5 suspensions, a collection 6 stock solution. The mold works as follows. A warm saturated initial solution or its mixture with a cold mother liquor is fed from the distributor 2 onto the outer surface of a slowly rotating drum 1 at its upper end and flows along it as a film. The coolant through the hollow shaft enters the distributor 3, from where it is fed to the inner surface of the drum at its upper end, the stack along it is also in the form of a film and cooled. The spent coolant is discharged from the crystallizer through windows in the lower part of an 8H hollow shaft. On the outer surface of the drum, crystalline deposits build up due to supersaturation of the cooled solution. These deposits are cut off when running onto the device 4 for their removal and slurry is discharged from collection 5 collection 6. The film mode of flow around the heat transfer surface of the apparatus both with a crystallizing solution and a liquid coolant allows to intensify the heat exchange process and use the heat transfer surface of the drum. The invention includes a crystallizer including a drum rotatably mounted, an initial solution dispenser on the outer surface of the drum, a liquid coolant dispenser on the internal surface of the drum, placed respectively outside and inside the drum, a device for removing crystalline deposits, characterized in that performance, the drum is installed vertically, and the distributors of the initial solution and liquid coolant are made in the form of annular manifolds and placed in the upper end of the drum.