SU140043A1 - Continuous crystallizer - Google Patents

Description

Continuous molds of horizontal and vertical types are known, consisting of several sections with cooling jackets and a mixing device and equipped with a fitting for the entrance of the initial product.

The proposed continuous mold differs from the known ones in that it is made of rigidly and hermetically interconnected on the flanges of the pipes, whose horizontal bottom has a protruding overflow neck. Inside the bottom there is a water outlet pipe with a curved end that does not reach the inner edge of the neck, and a drive shaft with scraper-frame star-shaped agitators and three conical reflective discs that form an annular gap with the neck edge are mounted on it using couplings . A mold of this design allows the product to be fed from the upper sides to the lower ones, and the heat exchange surface for the crystallization of the solution also increases.

In addition, the drive shaft of the crystallizer agitators is placed in a remote bogie attached to the flange with cut-out windows to the screw body, the screw of which is mounted on the end of the agitator shaft, which allows the product to be removed from the apparatus continuously.

The proposed continuous mold, the circuit of which is shown in the drawing, consists of several sections /. Each section has an outer water jacket and a double bottom 2. Through fittings 3 and 4, water is fed into the shirts and into the space between the bottoms; water from the latter is discharged through pipes 5. A certain temperature condition is created in each section. A shaft with agitators 7 and S is mounted inside the device. Reflective cones 9 and auger 10 are mounted on the shaft. Temperature control is carried out by means of thermocouples //. From below, the shaft rests on the bolster 12. The crystallizer has the number 140.043-2 ....

The air vent tube 13, fittings 14 for emptying (if necessary) each section, windows 15 and fittings 16.

The principle of operation of the mold is as follows. The original product continuously through the nozzle 16 enters the upper section. Mixers 7, mixing the product, clean the walls from the crystals. Having filled the section, the solution is continuously poured over the edge of the T-shaped double bottom 2, hits the reflective cone 9 and is thrown by centrifugal force into the next section. Stirrers clean crystals from the overflow neck of the bottom. Similarly, the process occurs in the remaining sections of the mold.

The crystals are withdrawn by the screw through the bolster windows.

Subject invention

Claims (2)

1. A continuous vertical type crystallizer with a hermetic lid, a drive for the agitator and cooling jackets for each section, so that, in order to supply the product from the upper tanks to the downstream and to increase the heat exchange surfaces for crystallization of the solution, it is made of rigidly and tightly interconnected on the flanges of the tsarg, the horizontal bottom of which has a protruding overflow neck, inside the bottom there is a drain pipe for water with a curved end that is not suitable for nney neck edge and along the neck axis mounted drive shaft with fixed on it via couplings by web-scraping star-mixers and conical ipeMH reflective disks forming annular gap with the edge of the neck. 2. The continuous crystallizer according to claim 1, is designed so that in order to remove the product from the apparatus, the drive shaft of the bushing is placed in a remote bolster attached on the flange with cut windows to the speck case, the screw of which mounted on the shaft end of the agitators.