SU99204A1 - Multicase installation - Google Patents

Description

Known multi-effect evaporators, operating under pressure, for sugar production with forced pumping circulation of the product for intensification of heat exchange, consisting of vertical housings with a tubular heating surface, in which there are tubes with tubular cuts with a slit for draining juice. In installations, the sugar syrup is adjusted to the degree of supersaturation, and o6pa30Bainie crystals are carried out by self-scattering of water in a vacuum apparatus, including evaporation into the system.

Known installations typically form three interconnected enclosures, operating under pressure, and a final concentrator operating under rarefaction and operating; to thicken the syrup and equalize the thermal conditions of the evaporator.

In the sample from the station, in the installation described by steam 1, the syrup is brought to the degree of reloading in the last building, and instead of the concentrator in the center, a turntable is placed. vacuum-packing ieripciM, niiici4) hpgtg; (the formation of crista cells is carried out by means of self-extracting water from the heated syrup. To use a gradual increase in vacuum as the formation and growth of crystals and the flow of their organized movement, the vacuum apparatus is made of polyethylene in the form of a vertical FEMA divided by horizontal partitions into sections, communicating with each other by means of goblins located in partitions, alternately in the center, then in the periphery, and the condensed-south syrup is supplied in the spiza, and the mashed (krista.ch. hara) on top of the apparatus.

FIG. 1 image of a general view of the proposed multi-site configuration; pa fn1 2 — details of an annular insert for obtaining n, a bottle of juice; in fig. 3 - located in the fourth quarter of the evaporator housing.

Installation e (nz four evaporating bodies I, 2, 3, 4 and vacuum apparatus 5 of continuous operation. In evaporating bodies I, 2 3 juice) CZP; a)) until it reaches the state of syrup (end) -: 65% I OIHCCTB) ,

and 3 evaporation Kopliyce - cHpon thickens de .-- give-a-penny, supersaturated (concentration 85-87%). In vacuum vacuum, 5 os1G1, est; g (it: -. Continuously formed massecuite due to the evaporation of water.

Cases 1, 2 and 3 are arranged with a value of only 1 from the size of the heating surface. Each housing is a vertical evaporator with a tubular heating chamber consisting of two tube sheets 6, into which the teil-exchange rollers 5 are rolled.

Ka -sda heat exchange tube 7 in the upper part is equipped with an annular insert 8 with multiple-thread screw on the side surface of the steam discharge tube .9 in the center.

The juice enters through the nozzle 10 onto the upper tube plate 6, from where it is poured into the tubes 7 through the screw cuts of the annular inserts 8, wets the inner surface of the latter-1x and goes down as a film in the form of a film.

Steam enters through the pipe 11 in the upper part of the housing in the annular space. The condensate is removed directly from the lower tube sheet 6, through the nozzle 12, and is non-condensable, and gases are discharged through the delays 13.

From the lower part of the corns, through the pipe 14, the circulation pumps 15 sap is supplied to the upper part of the same and subsequent buildings.

The evaporating body 4 of the device is basically the same as the first three bodies. Its difference lies in the fact that in order to increase the intensity of evaporation, the supersocular space and the space under the bottom tube sheet 6 are divided by partitions 16 into sections, and the syrup passes in the housing in series from one section to another. Centrifugal pumps 17 are installed to force the syrup to circulate.

All four bodies work under pressure. Between the third and fourth corns with a separator 18, sludge is separated from the syrup.

The evaporating body 4 is connected to a continuous vacuum apparatus 5

continuous operation, made in the form of a vertical column, the upper extended portion 19 of which is connected to a capacitor. The company is divided in height into sections by means of several horizontal partitions 20, with holes arranged alternately in the center, then on the periphery.

Above the horizontal partitions 20 on a vertical rotary. Ms shaft 21 mounted shovels 22 and a scraper 23, corresponding to the lower conical part of the apparatus.

In the upper part of the apparatus, a pagreve surface 24 is provided, which, if necessary, serves for additional heating of the massecuite.

Condensed to 86-87% solids content of syrons from the hull

4 steps into the pizhiyu part of the vacuum apparatus 5. On the way with the help of the dispenser 25, a certain predetermined amount of powdered sugar or paste is added to the syrup, which serves as foci to form sugar crystals. The mass moves in the lower part of the vacuum apparatus, where the pressure is higher than in the upper part due to the weight of the mass column in the apparatus (depression).

The mass gradually does not spill from one compartment of the vacuum apparatus.

5in another, moving from the center to the periphery and back. As it moves upward, davlepie falls and self-evaporation of water occurs, which contributes to the formation of sugar crystals. The final finishing of the baffle, if necessary, is carried out using the heating surface 24.

The resulting massecuite through the sides of the apparatus enters the widened part 19 of the vacuum apparatus 5 and further along the barometric tube 26 enters the crystallizer-distributor 27.

Subject invention

Claims (2)

1. Multi-pressure evaporation plant for the sugar industry, consisting of vertical bodies with a tubular heating surface, in heat exchange tubes of which are placed tubular inserts with cutting for draining the juice along the inner surface of the tubes, using circulation pumps to intensify heat exchange, characterized in that, in order to get the mash directly from the roasting plant, ensure its uniform thermal conditions and save steam, A continuous vacuum apparatus is included in the installation system after the last casing, which is used to form sugar crystals by self-dissolving water from the syrup brought into evaporation. oh setting to the degree of supersaturation. 2. The form of installation according to claim 1, characterized in that, in order to carry out the advancement of the massecuite from the bottom up and use the gradual increase in vacuum to form and grow sugar crystals, the vacuum apparatus is made in the form of a vertical column divided into horizontal sections the partitions provided for the passage of the massecuite with holes located either in the center or on the periphery of the partitions. t- © -OIS