SU1168269A1 - Rotor film apparatus - Google Patents

Abstract

1. ROTARY FILM DEVICE, comprising a housing with a heating surface, a rotor with radial blades fixed on it, a separation chamber, supply and discharge connections for the product and heat carrier, characterized in that, in order to intensify the heat and mass transfer due to the intensive removal of the vapor-gas phase from the working the zones of the apparatus, the blades, are made in the form of two Rus, inclined at an angle of 25-35 °. to the rotor axis and displaced one relative to the other by a step, less than 0.5 the length of the blades, the inner surface of the chamber is provided with fixed ribs inclined in the direction of rotation of the rotor shaft at an angle of 75-80 & to the generatrix chamber. 2. The apparatus pop. 1, which is also distinguished by the fact that the casing is provided with a restrictive ring facing the separation device, complete with radial grooves (L inclined to the horizontal plane, while the inner diameter of the ring is widening diameter to a smaller in the range of 1.1-1.3 .. Od 00 tND O)

Description

The invention relates to thin film rotary apparatuses intended for carrying out evaporation and distillation processes, and can be used in the food, chemical and other industries.

The purpose of the invention is to intensify the process of heat and mass transfer due to the intensive removal of the vapor-gas phase from the working area of the apparatus.

FIG. 1 shows the proposed apparatus, a longitudinal section; in fig. 2 shows section A-A in FIG. one; fig.Z - node I in figure 1; in fig. 4 is the same in axonometry.

The rotor film apparatus consists of a cylindrical body 1, equipped with a jacket 2 with nozzles 3 and 4, respectively, for the entrance of a boundary pair and a condensate outlet, I, and a nozzle 5, intended for the input of the starting material. In the lower part of the apparatus there is a pipe 6 for taking the finished product out of the apparatus. Inside the housing is a rotor 7 with blades. The rotor is driven by the drive 8. In the upper part of the apparatus there is a separation chamber 9. The separation chamber includes a blade separator 10 consisting of two layers of radial blades inclined at an angle of 25-35 to the rotor axis and shifted one relative to the other by a step within 0 , 30, 3 lengths of blades. The use of two angles of inclined radial blades displaced one relative to the other by the specified step allows to eliminate the leakage of liquid droplets between them. The choice of the angle of inclination of the blades within these limits depends on the type of the processed liquid and the speed of rotation of the rotor. Opposite the blade separator on the inner wall of the housing are fixed ribs 11, inclined in the direction of rotation of the rotor shaft at an angle of 75-80 ° to the generator chamber. Below the second rug of the mouth there is a restrictive ring 12, made by Talc, that the surface of the ring, facing the separation device, is made

with radial sleeves and with an angle of inclination of 3-5 to the horizontal plane, the inner diameter of the ring is made expanding to the bottom, so that the ratio of the larger diameter to the smaller one is within 1.11, 3. The choice of such geometric relations of the limiting ring is due to the need to obtain

stable operation of the flow of the liquid phase from the separation chamber into the working area of the apparatus. The nozzle 13 is designed to remove the vapor-gas from the separation chamber.

phase, freed from droplets of liquid.

The device works as follows.

The original solution is introduced into the apparatus through the nozzle 5. Blades

of the rotating rotor 7 it is evenly distributed on the inner surface of the housing 1, while the volatile component evaporates from the solution.

The finished product through the pipe 6

removed from the apparatus. Vapors of the volatile component released during the heat treatment of the material, due to the axial force generated

blade separator 10, are lifted into the separation chamber 9, where under the action of centrifugal force generated by the blade separator, droplets of entrained solution are thrown onto the body and fixed ribs 11.

The purpose of the ribs is to eliminate the centrifugal velocity of the gas-liquid flow and the retention of fluid particles. The fluid, the stack from the ribs, falls on the restrictive ring 12 and along the inclined radial grooves under the action of gravitational forces flows down further

recycling. The withdrawal of the liquid phase is facilitated by the downwardly expanding inner diameter of the ring and inclined radial grooves. The vapor-gas phase, freed from droplets of vegetation, is directed through condensation through pipe I3.

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figure 1

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Claims (2)

1. ROTARY FILM APPARATUS, comprising a housing with a heating surface, a rotor with radial blades fixed on it, a separation chamber, supply and exhaust pipes for the product and coolant, characterized in that, in order to intensify the heat and mass transfer process due to the intensive removal of the vapor-gas phase from the working zones of the apparatus, the blades are made in the form of two tiers, inclined at an angle of 25-35 ° to the axis of the rotor and offset one relative to the other by a step less than 0.5 of the length of the blades, the inner surface of the chamber is equipped with fixed ribs inclined in the direction of rotation of the rotor shaft at an angle of 75-80 ° to the generatrix of the chamber. 2. The apparatus according to claim 1, with the fact that the housing is equipped with a restrictive ring facing the separation 'device, made with radial grooves having an inclination to a horizontal plane, while the inner diameter of the ring is made expanding downward with the ratio of large diameter to smaller in the range of 1.1-1.3.