SU1762957A1 - Heat-mass-exchange apparatus - Google Patents

Abstract

The invention relates to heat and mass transfer devices, namely, devices for separating mixtures of mutually soluble liquids with different boiling points, and can be used in the oil industry, for example, for the final distillation of oil micelles. The purpose of the invention is to intensify the process of distillation of thermally unstable liquids with water vapor and to increase the depth of distillation of the solvent. In the internal cavity of the apparatus, a coil is installed in the form of successively narrowing and expanding conical spirals with a hole and plate elements. The upper end of the coil is connected to steam ejector nozzles. 1 il. (Ls

Description

The invention relates to the food industry, in particular to apparatuses for separating mixtures of inter-soluble liquids with different boiling points. The invention can be used in the processes of distillation of thermolabile substances, for example, for the final distillation of a micelle in the production of vegetable oils by the method of extraction from solid raw materials with low-boiling solvents.

The purpose of the invention is the intensification of the process of distillation of thermally unstable liquids with water vapor and an increase in the depth of solvent distillation due to the swirling flow of the vapor-liquid mixture.

The drawing shows the proposed apparatus, the overall appearance.

The heat and mass transfer apparatus includes a nozzle 1 for the introduction of a thermocouple, an overflow pipe 2 of the finished product, a lower section 3 of the apparatus, a coil 4. plate heat and mass exchange elements 5, a nozzle 6 for introducing steam into the jacket of the apparatus, an upper section 7 of the body of the apparatus, a nozzle 8 for extracting the liquid phase from the dropper 9 , nozzle 10 for removal of the vapor phase, nozzle 11 for injecting hot steam, steam ejector nozzles 12, nozzles 13 for introducing hot steam, nozzle 14 for introducing manovacuummeter, nozzle 15 for pressure gauge, nozzle 16 for introducing hot steam into a coil, patra approx 17 input micelles condensate pipe 18 from the input unit shirts, openings 19 for discharging the mixture of steam and a solvent nozzle 20 for insertion into the conduit 21 for discharging the finished product.

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The device works as follows.

The sharp steam and the micelle through the pipes 16 and 17 are fed to the coil 4. When passing through the tapering helix of the lower part of the coil, the solvent is partially separated from the micelle, while the liquid phase is pushed to the periphery of the coil’s inner surface and the vapor phase The apertures 19 are led out into the internal cavity of the apparatus. The heat of the juice vapor flowing from the holes 19 is used to evaporate the solvent from the droplets and film of the micelle, sprayed with steam ejector nozzles 12 and flowing onto the outer surface of the coil. In the expanding part of the coil, the velocity of the vapor-liquid mixture drops, and then the vapor-liquid mixture enters the nozzles 12. Through the nozzle 11 and the nozzle 12, additional steam is introduced and the micelle is sprayed. The evaporation of the solvent from the droplet occurs in a wake of steam and micelles. Hitting the outer surface of the coil, the micelle forms a flowing film, the formation of which is facilitated by lamellar heat and mass exchange elements 5, which also play the role of a plane-parallel nozzle. The flow film of the micelle is also treated with live steam entering from the bubbler. The droplets carried away from the apparatus are trapped in the droplet separator 9 and returned to the apparatus through pipe 8. The apparatus body is heated with deaf steam through the steam jacket. The finished product accumulates in the lower part of the apparatus and is discharged through pipe 2. A pipe 21 serves to drain the oil completely.

The proposed heat and mass transfer apparatus will reduce the consumption of acute

steam by 0.15-0.20 kg / kg of oil, intensify the process of heat and mass exchange in the distiller twice, shorten the time of heat treatment of the oil by half and get 30% more oil of increased

grade, reduce the capacity of the installation of the generation of the solvent.

Claims (1)

The invention The heat and mass transfer apparatus, comprising a housing with a lid, steam (gas) and liquid inlet and outlet pipes, a liquid distribution device, vertically arranged hollow elements, made with holes, provided with the lower part of the collector, under which the device for treating the liquid phase with hot superheated steam is located, is characterized by the fact that, in order to intensify the process of distillation of thermally unstable liquids with water vapor and increase the solvent’s distillation depth, it is equipped tubular coils in the form of successively narrowing and expanding conical spirals, the coil on the side of its axis of symmetry on the radius of the greatest bend is made with a hole on the conical surfaces of the coil getting the plate members, and the cover unit mounted steam jet nozzle connected to the upper ends of the coils. x 2 /