SU1131542A1 - Device for separating suspensions and emulsions - Google Patents

Abstract

I. A DEVICE FOR SEPARATION OF SUSPENSIONS AND EMULSIONS, containing a cylindrical body with a tangential inlet nozzle, a drain and Peskovy nozzles connected, respectively, to a drain and Peskovoy chamber, a filter element installed in the drain chamber with a nozzle for drainage of the clarified liquid, characterized by In order to increase the efficiency of clarifying the suspension, it is equipped with an intermediate hydro cyclone with a tangential nozzle connected to a drain chamber, a back pressure needle valve, in the tangential nozzle, and the filter element is equipped with a nozzle I for supplying a washing liquid connected to a pressure regulator. with O1 4 to

Description

2. The device according to claim 1, characterized in that it is provided with a flow distributor installed in the drain chamber above the drain pipe.

3. A device according to claim 1, characterized in that it is provided with an injector, by means of which a tangential inlet pipe is connected to a drain pipe of an intermediate hydrocyclone.

one

The invention relates to devices for the continuous separation of water-in-oil emulsions and suspensions under the action of centrifugal inertia forces of a rotating flow and can be used in the chemical, oil refining and other industries.

A hydrocyclone is known that contains a cylindrical conical body with a tangential inlet nozzle, a sand nozzle and a nozzle nozzle connected to a drain chamber in which a filtering partition is installed, capable of moving relative to the horizontal axis.

In a known hydrocyclone, the clarified flow, the exit from the discharge nozzle, hits the filter septum and leaves undulating materials on it, most of which, together with the fine solid phase, penetrate the septum and go to the drain 1.

A disadvantage of the known hydrocyclone is the unreliable operation of the filter septum, which is capable of clogging fiber-like materials, which leads to a decrease in the overall performance of the device.

A hydrocyclone is known, comprising a housing, an inlet tangential nozzle for supplying an emulsion, a sand nozzle, discharge nozzles, as well as a coalescing chamber for trapping emulsions and a nozzle for draining purified liquid 2.

The disadvantage of this device is that when the cleaning fluid enters the area of the drain pipes, the main stream rushes through the central drain pipe, with which a significant part of the contaminants is carried away. This is because the coalescing chamber has a large hydraulic resistance. In addition, the disadvantage of the device is the low productivity of the purified liquid.

Closest to the invention is a device comprising a cylindrical body with a tangential inlet, a drain and a Sand outlet, connected respectively to a drain and a sand chamber, filtering

element installed in the drain chamber with a pipe to drain the clarified liquid.

The original suspension through a tangential inlet pipe is fed under pressure into the body of a hydrocyclone, where the separation of the suspension into a thickened and clarified stream occurs. The thickened fraction, together with a part of the liquid, is discharged through the sand outlet, and the fraction clarified, the passage of the discharge outlet; enters the inter-tray space and is distributed through the discharge chamber. As the fluid moves in the inter-tray space, particles fall out of it, periodically removing the drain chamber 1 through the lower nozzle, and the floating particles are retained by the filter septum 3.

However, a significant part of solid inclusions, through the inter-tray space, due to the greatest resistance of the drain chamber and the filter septum leaves through the lower nozzle of the drain chamber, which significantly reduces the cleaning efficiency.

Floating particles, and most of them are retained by the filter septum, accumulate, increase the resistance of the septum to penetrate the liquid, and the septum, clogged, stops working as a filter.

These drawbacks significantly reduce the degree of purification of liquids.

The purpose of the invention is to increase the effectiveness of the clarification of the suspension.

The goal is achieved by the fact that the device for separation of emulsions and suspensions, containing a cylindrical body with a tangential inlet, drain and sand pipes connected respectively to the drain and sand chamber, the filter element installed in the drain chamber with a pipe for drainage of the clarified liquid, is provided with an intermediate hydro cyclone with a tangential nozzle connected to a drain chamber, and a backpressure needle valve installed in the tangential nozzle, and the filter ruyuschy element is provided with a branch pipe for supplying the washing liquid connected to a pressure regulator.

It is advisable to provide the device with a flow distributor installed in the drain chamber above the drain pipe.

Preferably, the device is equipped with an injector, through which the tangential inlet is connected to the drain pipe of the intermediate hydrocyclone, i

Such a constructive implementation of the device allows desallamming water-oil emulsion and suspension due to repeated stepwise cleaning. In addition, supplying the device with a pressure regulator connected to the filtering element contributes to its timely washing, which significantly increases the cleaning efficiency of liquids having sand particles.

I FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - node B in FIG. .

X

The device consists of a cylindrical housing 1 with a tangential inlet nozzle 2, a drain nozzle 3 and a sand nozzle 4 for exit of the thickened fraction. To the housing 1 from the side of the sand pipe 4 is adjacent sand chamber 5 with pipe 6 for removal of the condensed fraction.

The housing 1 on the side of the drain pipe 3 adjoins a drain chamber 7, in the cavity of which a flow distributor 8 and a filter element 9 with a pipe 10 for draining the clarified liquid are installed coaxially with the drain pipe 3, the filter element 9 is also provided with a pipe 11 for supplying the washing liquid. An electromagnetic valve 12 with primary 13 and secondary 14 pressure regulator devices is installed on the washing liquid supply line. In the upper part of the drain chamber 7 there is a pipe 15, tangentially C9 connected with an intermediate hydrocyclone. The hydrocyclone 16 is equipped with a drain nozzle 17 and a sand nozzle 18. At the inlet nozzle 2 of the cylindrical housing 1, an injector 19 is installed, which supplies the clarified liquid from the nozzle 17 of the intermediate hydro cyclone 16 to the cylindrical housing 1. flowing out of the drain pipe 3. The drain pipe 17 is connected by a pipe with an injector 19 for returning the drain flow from the hydrocyclone 16 to the cylindrical body 1. There is a needle in the pipe 15 th valve 21 with spring 22.

The operation of the device is as follows.

The original liquid or suspension to be cleaned through the tangential pipe 2 is fed into the housing 1. Under the action of centrifugal forces of inertia, the suspension is purified or divided into clarified and condensed streams. The condensed stream through the sand pipe 4 enters the sand chamber 5 then through

 pipe 6 is removed from the apparatus. The clarified flow, through the nozzle 3, falls on the flow distributor 8, where it receives an additional twist by fixedly fixed blades 20 and enters the cavity of the discharge chamber 7. Next, the liquid phase of the drain flow, passing through the holes of the filter element 9, falls into its cavity, leaving on the surface there is a fine solid part, and the already pure liquid is removed from the filter element 9 through pipe 10. When the surface of the filter element 9 is clogged in its cavity, the pressure of the liquid drops. When the pressure decreases, the primary device 13 commands the secondary device 14,

5 which in turn gives a command to the solenoid valve 12, which, under pressure, delivers the washing liquid through the nozzle 11 into the cavity of the filter element 9 and counter-pressures the solid particles that settle on it, which

 together with the main drain flow coming through the nozzle 3, are sent to the intermediate hydro cyclone 16. As the pressure of the drain flow increases in the cavity of the drain chamber 7, this action extends to the needle valve 21, which compresses the spring 22, opens an orifice in the nozzle 15, and the stream enters the hydrocyclol 16 at an intermediate separation. The condensed phase is led out through the pipe 18 into the sand chamber 5, where it is combined with the condensed stream leaving the cylindrical body 1, and discharged through the pipe 6 and the clarified stream through the pipe 17 through the injector 19 again returns to the separation

5 into a cylindrical housing 1.

Thus, the proposed design of the device has an increased separation efficiency. In this apparatus in the drain chamber filter element

0 is periodically washed, which reduces clogging of the latter in a fine phase. The use of a device for cleaning a suspension of a parafora after centrifuges allows an additional return to production.

5 to the product. Losses of the target product are practically absent.

Claims (3)

1. DEVICE FOR SEPARATION OF SUSPENSIONS AND EMULSIONS, containing a cylindrical housing with a tangential inlet pipe, drain and sand pipes connected respectively to a drain and sand chambers, a filter element mounted in a drain chamber with a pipe for draining clarified liquid, characterized in that, with in order to increase the clarification efficiency of the suspension, it is equipped with an intermediate hydrocyclone with a tangential pipe connected to the drain chamber, a needle backpressure valve, installed in the tangential nozzle, and the filter element is equipped with a nozzle for supplying washing liquid connected to a pressure regulator. Condensed Product> 1131542 2. The device according to π. 1, characterized in that it is equipped with a flow distributor installed in the drain chamber above the drain pipe. , 3. The device according to π. 1, characterized in that it is equipped with an injector, through which the tangential inlet pipe is connected to the drain pipe of the intermediate hydrocyclone.