SU1348189A1 - Apparatus for distilling solvent from polymer crumbs - Google Patents

Abstract

The invention relates to continuous process apparatuses designed to release polymers, including synthetic rubbers, from solutions in a hydrocarbon () solvent into an aqueous medium in the form of He. ib of the invention is an increase in the efficiency of the separation process by reducing the entrainment of polymer chips from the apparatus to the condensation system. For this, it is provided with inclined vanes. A cylindrical stand-off was made on a larger base of the cone-shaped collector. The hollow cylinder is installed by its lower end in the outlined part with the formation of an annular channel. Inclined blades are mounted in the annular channel. When the apparatus is in operation, the flow of the polymer solution, hot water and steam enters the annular gap and onto inclined vanes. At last, the flow of gas-liquid mixture enters the inner surface of the cone collector, where in the field of centrifugal forces the flow is divided into vapor gas and water pulp. The pulp is fed for further processing, and steam-gas is for washing and condensation. 1 il. (L with 4 00 GS CO

Description

I: (shaving refers to continuous-flow apparatus, preassigned to discharges of polymers, including synthetic TP-1CCNC rubbers, from solutions in hydrocarbon-hydrogen, dissolve into the aqueous medium in the form of chips.

The purpose of the invention is to increase the efficiency of the separation process by reducing the entrainment of polymer chips from the apparatus to the condensation system.

The drawing schematically shows the pre-, 1a | -emi apparatus.

The apparatus contains a vertical body 1, an image (I (the adjacent sections adjacent to the other in the form of hollow rotation bodies of variable sectional height with steam bubblers 2 installed in the most sections) for supplying hot steam. In the case there are upper 3 and lower 4 On the lower lid 4 there is a nozzle about, to which a crusting unit 6 is tangentially connected. On the upper shaft 3, the apparatus is installed with a hollow pilipdr 7 with a branch pipe S d.1I of the gas-vapor mixture, connected with the cylinder 7, through a tapered adapter 9 KoHycHbiii collector 10 is connected by a flange plug 11 to a pipe 12 to remove the tube from the device through pipe 5. Bo, only the van cone collector 10 faces the new cylinder and there is a cylindrical recess 13 on it. p (), the 1st cylinder 7 is installed with its end face ii of the bead. The cone-ny11 collector 10 is equipped with a flow, 1 16, forming together with the top cover 3 of the n.iaiuio apparatus a narrowing ring) Tsev () nd;

The apparatus shbotag as follows.

The F acTBOp of the polymer is fed in crumbling, l6. Where the hot water and steam are introduced. A mixture of solvent vapors, water, steam, water, and polymer dispersion is formed at nozzle 5, where nozzle 12 is screwed, at the same time as the apparatus. Due to the heat permeable through the barbogers 2, and the apparatus continues intensive evaporation of the solvent, it is completed about the dissolving of the polymer and from the residues dissolve, 1 am from the crumb.

0

Due to the variable cross section in the apparatus, turbulent eddies arise, which promotes intensive mixing of the media in the apparatus, preventing the sticking of polymer particles. The three-phase flow formed successively passes through sections of housing 1 and, passing along a smoothly constricted channel, turns 180 °, enters the annular gap 14 and then onto inclined vanes 15. The field of centrifugal forces separates the flow into steam and gas and water pulp. The separated slurry through pipe 12 is withdrawn from the apparatus for further processing, and the dried vapor-gas through the hollow cylinder 7, cone adapter 9 and pipe 8 is removed for washing and condensation. The vapor-gas mixture is deeply separated from polymer particles and water.

0 is achieved due to uniform loading of the senorization volume of the cone collection 10 but the entire inlet section of the annular gap 14 and due to the unaccented separation of the flows of the pulp and the vapor-gas mixture,

and the hydraulic resistance and ripple of the two-phase flow are reduced.

Claims (1)

Invention Formula An apparatus for distilling off the solvent from the polymer crumble Q, containing a vertical body with branch pipes adjacent to each other sections in the form of hollow bodies of rotation of variable height sections with steam bubblers installed in the largest sections, mounted in the upper part of the body coaxially with m hollow cylinder with a pipe for removal of the gas-vapor mixture and a cone collector with a pipe for pulp removal, formed by a large base to the hollow cylinder, characterized in that, in order to increase the efficiency of the separation process by reducing the polymer crumb entrainment from the apparatus to the condensation system, it is equipped with inclined blades, a cylindrical alignment is made on the larger cone-shaped base, the hollow cylinder is installed with its lower end in the cut-off part to form an annular channel, and inclined Tintz channel. Steam output Polymer solution  6 Water ,, Pulp yield Redlctor .M. Ailrushenko 3;) ka: z 4809: 16 Compiled by E. Krieger Tehred I. VeresKorrektor M. Pojo Circulation 564Subscribe VNIIPI USSR State Committee for Inventions and Discovery 1 13035, Moscow. Zh-35, Raushsk nab., 4/5 Production and Printing Industry, Uzhgorod, ul. Design. four