SU582801A1 - Melting crystalliser - Google Patents

Description

one

The invention relates to the field of chemical engineering, in particular, to continuous crystallizer melting molds.

A mold is known, consisting of a heated vessel for the melt, separate systems for supplying a single ост сп ntric carrier, equipped with spools mounted on a fixed central pipe, a drive and a rotor, on the working surfaces of which crystallization and melting take place. The melt container is equipped with partitions dividing the apparatus into sections, in each of which coils connected in series and installed by rows of coils are components of the rotor 1J.

The disadvantages of this mold are: the inability to obtain several (more than two) fractions with different melting points, high energy costs, the inability to control the processes of crystallization and melting, the cumbersome design and installation complexity, the impossibility of melt melting

crystalline crust on the surface of the rotor coils.

Also known is an apparatus for fractional crystallization in a thin layer, consisting of an internally heated rotary drum mounted on a poltmch shaft with supports, a heated melt trough, a knife to remove the product and two heaters mounted in series opposite to the upstream side of the drum and not in contact with drum surface. The initial melt in this structure enters the trough, where it maintains, with the temperature several degrees above the melting point of the initial substance. When the drum rotates on its surface, the temperature of which is maintained below the melting point, a crystalline crust is formed. The latter, entering the zone of action of the heaters, is corrected, and forming the liquid part under the action of gravity flows between the crystals into the trough. As a result, the components are redistributed between the solid and the liquid phases, and a thin layer of purified substance remains on the surface, which then removed with a knife.

The disadvantages of this mold for-; Included in the impossibility of obtaining several fractions with different melting temperatures and high energy consumption, due to the presence of knife removal of the finished product, heating and melting of the crystalline crust through the air duct, partial melting of the crystalline crust in the apparatus and the need to melt the obtained fractions before subsequent processing,

The aim of the invention is to ensure the separation of the initial melt into three 15 or more fractions, increasing the efficiency of the apparatus and simplifying its manufacture and installation.

FIG. 1 shows a continuous criste / allyator for the case of splitting a melt into three fractions; in fig. 2 and 3 - cross-sectional cuts of the apparatus.

The device consists of a heated tank 1, the rotor, made in. as a block of individual hollow cylinders 2 connected by .5 using pipes 3 with spools 4 installed on fixed pipe 5, drive 6, frame 7 and fixed on said pipe 5 partitioned troughs 8, 9, 10. The surface of the cylinders is made ribbed. ribs 11 perforated shells 12 are installed to hold the melted crystalline crust. The apparatus is equipped with fittings for supplying and discharging the initial melt 13 and 14, withdrawing the fractions after separating 15.16 and 17, supplying 18 and discharging 19 hla: informant, supplying 2O and outputting 21 the coolant.

The mold - melting works in the following way.

The divided melt is fed through the fitting 13 into the container 1, where it crystallizes on the surface of the cylinders 2, into the cavities of which through the fitting 18 and the spool 4 the coolant is fed through the fitting 19. As the rotor rotates. the thickness of the crystalline crust formed increases until the cylinder leaves the zone of contact with the melt (from the rotor side opposite to the bath rotor),

When the pipes 3 of cylinder 2 are combined with the chamber of the spool, from which coolant flows into the cylinder cavity, forming a crystal crust begins to melt. In this case, first of all, the fraction enriched with the low-melting component, which is collected in the trough 8, is smelted. A higher fraction is collected in the trough 9, and the highest melting trough in the trough 10. The presence of several cylindrical elements ensures the continuity of both the crystallization process and the smelting of fractions. The described process is carried out continuously on each cylinder with a repetition of the cycle through each rotation from the rotor.

The proposed continuous melter mold can be widely used in the production of fats, where it is necessary to separate melts into three or more fractions, as well as in the separation of fractions of a number of melts of organic origin, for example, naphthalene and its derivatives.

Claims (1)

1. A continuous continuous melter containing a vessel for melt, a heat transfer fluid supply system equipped with spools and installed on the fixed central tube, a drive and a rotor, in order to ensure the separation of the initial melt into three or more fractions, increasing machine performance and simplify its manufacture and installation, the rotor is made in several cylinders connected by radial tubes with spools and fitted with perforated shells, and sectionalized troughs are installed on the fixed central tube to collect melted fractions. 2, the mold according to claim 1, f. Sources of information taken into account in the examination: 1, Copyright certificate number 273158, class, in 01 D 9/00, 04/29/68, 2, Copyright certificate № 148014, cl. B 01 D 9 / O2, 11.07.59, / g // Hr HIIIllllill PPMPIPMSH n 2 iniiiiiiiinmii ----% s PIMTSSCH .З