RU2215569C2 - Thin-layer settler - Google Patents

Abstract

FIELD: apparatus for separation of two immiscible media of different density. SUBSTANCE: proposed settler is used for separation of different media such as liquid-liquid, gas-liquid, liquid-suspension; separation of mixtures such as condensate-glycol, gas condensate in processing oil gas, treatment of sewage and clarification of vegetable oils and petroleum products. Settler has vertical housing, branch pipe admitting flow to be separated and branch pipes for escape of separated phases. Located inside housing is stack of thin-layer elements which is provided with blank; thin-layer elements are arranged at spaced relation; each element is made in form of funnel directed downward. Upper edge of inlet branch pipe is connected with base of thin-layer element which is nearest to branch pipe. Each thin-layer element is provided with sectionalizing fins smoothly located over generatrices of funnel. Clearance between elements is equal to height of fin. Funnel is assembled from plates ; each plate is made in form of equilateral trapezium and sectionalizing fins are formed by beads found on lateral faces of trapeziums. Lower base of trapezium has cut and beads are provided in area of this cut. EFFECT: avoidance of secondary mixing of phases. 3 cl, 4 dwg

Description

 The invention relates to apparatus for separating two immiscible media of different densities, for example liquid-liquid, gas-liquid, liquid-suspension, and can be used to separate condensate-glycol, gas-condensate mixtures in the processing of oil gas, for wastewater treatment and clarification vegetable oils and petroleum products.

 Known thin-layer sedimentation tank, designed to remove from the water as settling and pop-up contaminants. The sump contains a vertical casing with contaminated water inlet pipes and purified water and sludge outlet pipes and a thin-layer block (Thematic review. Analysis of the design solutions of thin-layer settlers ", TsNIITEneftemash, M., 1989, p.19).

Common features of the known and proposed devices are:
- vertical body;
- inlet and outlet pipes;
- thin layer block.

 A disadvantage of the known sedimentation tank is the low separation efficiency due to the turbulent disturbance arising, as a result of which sediment is stirred up and the water stream is secondarily contaminated.

The closest in technical essence and the achieved result to the proposed device is a thin-layer sump according to the patent of the Russian Federation 2159660 dated March 30, 1999, publ. a package of thin-layer elements. The inlet of the inlet of the shared mixture is placed at the bottom of the apparatus coaxially with the body and is deepened by a distance equal to 0.1-0.5 of the height of the apparatus. Thin-layer elements are placed along the axis of the apparatus, each thin-layer element is made of plates assembled in the form of a funnel facing down. The upper base of the lower thin-layer element is muffled, and the upper thin-layer element is connected to the housing by means of an annular partition mounted in the upper part of the apparatus. Between the inlet pipe and the lower thin-layer element, one or more thin-layer elements are additionally installed. Moreover, the base of the inlet of the thin layer element closest to the nozzle is connected to the upper edge of the nozzle. The angle of inclination of the generatrix of the thin-layer element to the horizon is 30-70 ^o .

Common features of the known and proposed devices are:
- vertical body;
- a branch pipe of an entrance of a shared stream;
- outlet pipes of the separated phases;
- a package of thin-layer elements is placed inside the housing;
- the package of thin-layer elements is equipped with a plug;
- thin-layer elements are installed with a gap relative to each other;
- each thin-layer element is made in the form of a funnel facing down;
- the upper edge of the inlet pipe is connected to the base of the thin layer element closest to the pipe.

 A disadvantage of the known thin-layer sedimentation tank is not a high separation due to the secondary mixing of the separated and separated phases.

 The technical problem is to create a design of a thin-layer sump, providing high efficiency separation of the light phase from the heavy.

 The problem is achieved in that in a thin-layer sump containing a vertical casing, located inside the casing and equipped with a plug, a package of thin-layer elements installed with a gap relative to each other, each of which is made in the form of a downward funnel, the inlet of the shared flow, the upper edge of which is connected with the base of the thin-layer element closest to the nozzle, and the outlet for the separated phases, each thin-layer element is equipped with tsioniruyuschimi fins, wherein the gap between the elements corresponds to the height lamella rib.

 In addition, the funnel is composed of plates, each of which is made in the form of an isosceles trapezoid, and the sectioning ribs are formed by flanges made on the lateral sides of the trapezoid.

 At the same time, a cut is made in the lower base of the trapezoid, and the base at the place of the cut is equipped with a flange bent outward of the funnel, and the height of the flange of the base of the plate is less than the height of the flange of its lateral face.

 In addition, a cone-shaped guide element is mounted to the plug, mounted at the top of the inlet pipe.

 The implementation of each funnel-shaped thin-layer element with sectional ribs located along the generatrix of the funnel, and the placement of thin-layer elements at a distance equal to the height of the ribs, allows you to form a directed movement of the shared stream, evenly distributing it along the channels formed between adjacent ribs of the thin-layer element, thereby preventing secondary mixing shared phases.

 The implementation of a funnel-shaped thin-layer element of plates, each of which is an isosceles trapezoid, having flanges made on the lateral sides of the trapezoid, is one of the options for the most rational design of the sump.

 In order to more clearly separate light and heavy phases and prevent their subsequent mixing in the lower base of the plate of a thin-layer element, a flange is made at the cutout, the height of which is less than the flanging height of the lateral face of the plate.

 A guide cone-shaped element attached to the plug allows you to evenly distribute the shared stream among the thin-layer elements, creating conditions for more efficient separation into separate phases.

 A thin-layer sump is shown in the drawings, in which Fig. 1 shows a general view of the sump, in Fig. 2 is a top view, in Fig. 3 is a separate plate and plates are placed in a package of thin-layer elements, and Fig. 4 is a plate placement in a package of thin-layer elements elements, view A.

 The thin-layer sump contains a vertical casing 1 with a nozzle of the input of the shared mixture 2 and nozzles of the exit of light and heavy phases 3, 4, respectively. Inside the housing 1 there is a package of thin-layer elements 5 provided with a plug 6. Each thin-layer element 5 is made in the form of a downward funnel and is assembled from separate plates 7. Each plate 7 is made in the form of an isosceles trapezoid with flanges 8 on its side faces. A thin-layer element 5 is formed by abutting separate plates 7, and flanging 8 of two adjacent plates form sectional ribs 9. A cut 10 is made in the lower base of plate 7, at the place of execution of which the base is equipped with flanging 11. The height of flanging 11 is less than the height of flanging 8. A cone-shaped guide element 12 is attached to the plug 6, which is mounted on top of the inlet pipe 2, the upper edge of which is connected to the base of the thin-layer element 5 closest to the pipe 2.

 Thin-layer sump works as follows. The mixed stream enters the inlet pipe 2 and then, with the help of a cone-shaped guide element 12, is uniformly fed into the space between the thin-layer elements 5, where under the influence of gravitational forces in the laminar thin layer, the stream is divided into light and heavy phases. The light phase rises up and leaves the apparatus through the outlet pipe 3. The heavy phase drains down the apparatus and is discharged through the outlet pipe 4.

Claims (3)

 1. A thin-layer sump containing a vertical housing located inside the housing and provided with a plug is a package of thin-layer elements installed with a gap relative to each other, each of which is made in the form of a downward funnel, the inlet of the input to the shared stream, the upper edge of which is connected to the base of the closest to the nozzle thin-layer element, and branch pipes of the output of the separated phases, characterized in that the funnel is composed of plates, each of which is made in the form of an isosceles trapezoid, on the side faces of the cat swarm formed flange bent outwardly funnel, in addition, the lower base of the trapezoid is formed a cutout, the base cutout in the area when provided with eyelet, the funnel bent outwards and the base plate flange height less than the height of its side flange faces.  2. A thin-layer sump according to claim 1, characterized in that the gap between adjacent thin-layer elements corresponds to the height of the flanging of the plate.  3. A thin-layer sump according to claim 1, characterized in that a cone-shaped guide element is attached to the plug, which is mounted with its apex to the inlet pipe.

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