SU1565705A1 - Crumb-former for extracting polymers from solutions - Google Patents

Abstract

The invention relates to devices used in the petrochemical industry in isolating polymers from solutions in the form of chips using water vapor. The purpose of the invention is to increase the efficiency of the polymer recovery process. For this purpose, tangentially arranged holes 9 are made on the common wall 8 between the chamber 1 for water vapor and the chamber 4 for the polymer solution. The holes 6 on the common wall 5 between the chambers 2, 4 for dispersing the polymer and for the polymer solution are tangentially and opposite to the holes 9 . The inner surface of chamber 4 for the polymer solution in the regions where both groups of holes 6 and 9 are made is of the same diameter. 2 hp f-ly, 9 ill.

Description

assigned to deliver the polymer solution and coaxial with the chamber 4 for the polymer solution.

On a common wall 8 between the camera 1 for

These tangential jets of water vapor separate the polymer solution from the walls 8 and separate them.

As a result of heating the polymer solution

water vapor and chamber 4 for solution 30 water condenses and forms a prepolymer are made tangentially located holes 9. The inner surface of the camera 4 for polymer solution in the areas of both groups of holes 6 and 9 is made of the same diameter.

annular layers of water which prevent adhesion. In this case, the resistance to punching decreases and a uniform residence time of the solution in chamber 4 is achieved. Under the action of centripetal forces, new

The holes b are located tangential-35 PSFT water vapor permeate the mass

but also opposite holes 9. The nozzle 10 is eccentrically connected to the chamber 1 and is intended to supply water vapor. The chamber 2 at the outlet end is provided with a nozzle 11 for withdrawing from the microscopic solution, is heated and condensed. A part of the condensate from the rotating flow returns to the walls 8, and a part in the form of droplets remains in the mass of the solution, separating it. A part of the water vapor can be measured 7. The supply of water vapor to the chamber 4 replaces a part of its cross section, stretches the solution in the longitudinal direction and increases the surface areas

Forming the mixture, polymer chips, gas-40 should be placed in the axial space of the vapor phase and water. Opposite

pipe 7 at the end of the camera 4 is installed plug 12.

Between the partition 3 and chamber 2 there is an annular collector chamber 13 4k of the solution, which interacts with the water vapor with the blade guides 14 and the rum. pipe 15 for supplying water vapor or circulating water to the jets coming through the holes b. The holes 9 are placed evenly around the circumference and in several rows along the length of the wall 8.

In the embodiment of the crumb formation (Fig. 4), the plug 12 is made in the form of a conical nozzle. The guides 14 in the chamber 2 are placed between the holes 6 and are made in the form of transverse disk rings with pie-cut and jumpers connecting the opposite edges of the cut-outs in the adjacent rings, are oriented in the walls of the guides 14.

Heating the mass of the solution reduces its viscosity and gives the solution energy. To facilitate its dispersion in the next

50 stages. Moreover, the separation of the polymer from the solution during the supply of water vapor is limited by the pressure in the chamber 4 and the differential supply of water vapor along the length of the device. The polymer solution prepared in this way enters

55 to the bore holes in the form of jets are directed into chamber 2.

Heat transferred to crushing solution, pressure decrease in chamber 2

These tangential jets of water vapor separate the polymer solution from the walls 8 and separate them.

As a result of heating the polymer solution

the water vapor condenses and forms annular water layers preventing adhesion. In this case, the resistance to punching decreases and a uniform residence time of the solution in chamber 4 is achieved. Under the action of centripetal forces, new

the solution is heated and condensed. A part of the condensate from the rotating flow returns to the walls 8, and a part in the form of droplets remains in the mass of the solution, separating it. A portion of the water vapor may be located in the near-axial space of the

measures 7. The supply of water vapor to chamber 4 replaces part of its cross section, stretches the solution in the longitudinal direction and increases the surface area

to be located in the axial space of the

solution interacting with water vapor.

solution interacting with water vapor.

Heating the mass of the solution reduces its viscosity and gives the solution energy. To facilitate its dispersion in the next

stage. Moreover, the separation of the polymer from the solution during the supply of water vapor is limited by the pressure in the chamber 4 and the differential supply of water vapor along the length of the device. The polymer solution prepared in this way enters

The jets are directed toward the bore holes in the chamber 2.

Heat transferred to crushing solution, pressure decrease in chamber 2

the process of final distillation of the solvent from the polymer crumb in the downstream crumbler apparatuses or to reduce the consumption of water vapor supplied to the degasser 19. Then repeat the cycle 15

and the development of the surface area of the jets of a uniformly heated solution leads to the rapid evaporation of the solvent and self-separation, the breaking of the polymer with the formation of a given porous rubber crumb. In chamber 2, the stream consisting of chips is poly-5. measure of gas vapor phase and water is twisted and distributed in density. Centripetal forces contribute to the stripping of the solvent from polymer chips. The swirling of the flow in chamber 2 is provided by 10 polymers from solutions containing, fixedly tangentially, coaxially mounted annular chambers for all types b (Fig. 1) and guides 14 installed. chambers 4, which prevent premature boiling up of the solvent in chamber 4.

The sequential movement of the mixture flow in chamber 2 allows it to be used for additional dispersion of the polymer solution jets parallel to those through the openings 6. Water vapor is fed through the pipes for the polymer solution in the same case of the water vapor chamber and the chamber - 15 (Fig. 1). Circulating water, fixed holes.

Puscha through pipe 15, intended2. The forming mill according to item I, is stuck into the anti-agglomeration chamber 2 due to the holes in the common wall of the polymer chip. From pipe 11 to the mixture of polymer dispersion chambers and polymer chips, gas vapor phase and water for the polymer solution are placed in a cyclone 18, from which the slurry (microscopically and oppositely to the polymer orifices of the polymer and water) goes to the bottom of the tank the common wall of the chamber for the bone-in-water degasser 19 for stripping off residual steam and the chamber for the polymer solution, the solvent from the polymer crumb, and gas-3. The crumb former according to claim 1, the phase is cast into the condensation system, which is enlarged by the fact that the internal surface of the solvent chamber for the polymer solution at the site Increasing the porosity of the polymer chips for making both groups of holes makes it possible to significantly intensify the filling of one diameter.

Claims (1)

Claim 1. Crusher for separation vapor for dispersion of the polymer, separated by a transverse annular partition, mounted in coaxially and concentrically annular chambers polymer solution chamber with holes made on its common wall with the polymer dispersion chamber, in order to increase the efficiency of the polymer separation process , on the total wall process of the final distillation of the solvent from the polymer crumb in the downstream apparatus, or to reduce the consumption of water vapor fed to the degasser 19. Gave th cycle is repeated. polymers from solutions containing coaxially mounted annular chambers for all . imerov from solutions containing coaxially mounted annular chambers for all Claim 1. Crusher for separation is. polymers from solutions containing coaxially mounted annular chambers for all The water vapor chamber and the polymer solution chamber are made with tangential holes. vapor for dispersion of the polymer, separated by a transverse annular partition, mounted in coaxially and concentrically annular chambers polymer solution chamber with holes made on its common wall with the polymer dispersion chamber, in order to increase the efficiency of the polymer separation process on common walls / FIG. 2 5-5 Rag.z Pulp a Rast & op Fig.b ten D 17 Pulp jl-d 7 FIG. eight Patzpar 1o Antiagglomerate j Ј Fig 9