SU1002035A1 - Hydraulic cyclone - Google Patents

Description

The invention relates to devices for separating immiscible liquids, thickening and classifying suspensions, and can be used in the chemical, oil-producing, pulp-and-paper and other industries.

Known hydrocyclone, comprising a cylindrical-conical case with a tangential supply pipe and cover, the upper and lower drain pipes, and on the upper drain pipe located bumpers 1.

The disadvantage of this design is the violation of the stability of the fluid flow due to a sharp turn of the upward flow upon impact with the striker.

It is also known a device for the separation of immiscible liquids, consisting of two series-connected hydrocyclones, each of which includes a cylindrical-conical body with a tangential supply nozzle, an upper and lower drain nozzles 2.

The separable mixture is fed to the inlet of the first hydrocyclone, where it is separated into a clean, heavy phase, which through the lower

the drain connection is removed from the apparatus, and a mixture of the heavy and light phases, which is fed from the upper drainage nozzle into the second apparatus. In the second hydrocyclone, the mixture is separated into a clean, light phase, which leaves the apparatus through the top drain and a mixture of light and heavy phases, which is returned to the inlet of the first apparatus either through a pump or through an ejector.

Although this device makes it possible to obtain pure separation products, it is notable for its high consumption of materials and energy, and in the case of the use of an ejector it is complicated by the design and high cost of maintenance.

The closest in technical essence and the achieved result is a hydrocyclone containing a cylindrical body with a lid, a tangential supply nozzle, axial drain and sand nozzles,

25 installed coaxially with the drain pipe and cylindrical shell 33 coaxial to the body.

Claims (3)

The original product is fed tangentially into the body of the hydrocyclone and swirls. Under the action of centrifugal forces of inertia, more of the gage of the gage moves to the walls of the apparatus, descends along a spiral trajectory to the lower drain branch pipe and leads out of the hydrocyclone. An internal, upward flow of lighter fluid is discharged from the apparatus through the overhead drain. The main disadvantage of the known construction is the impossibility of simultaneously obtaining two pure phases. The aim of the invention is to improve the quality of separation due to the provision of a circulation circuit in the apparatus. This goal is achieved by the fact that a hydrocyclone containing a cylindrical body with a lid, a tangential supply nozzle, axial drain and sand nozzles, installed coaxially with the drain nozzle and coaxially with the cylindrical shell, the upper open end of the cylindrical shell is located above the feeding nozzle, and the housing cover It has the form of one and a half. The drawing shows a General view of the hydrocyclone. The hydrocyclone includes a cylindrical housing 1 with a lid 2, made in the form of one and a half, a tangential feed pipe 3, the top 4 and the bottom 5 drain pipes, a cylindrical shell b with mounting rods 7 attached to the cover 2. Hydrocyclone works as follows. The initial product, which is a mixture of two phases, different in specific weights, enters under pressure through the tangential feed nozzle 3 into the upper part of the cylinder of the conical body 1 and twists it. To create a stable rotating flow, the initial product is fed at an angle into the hydrocyclone body 1. Under the action of centrifugal inertial forces, the more heavy phase is thrown against the walls of the housing 1, it spirals towards the lower discharge pipe 5 from where it is discharged from the apparatus. The light phase together with some part of the heavy phase forms an upward central rotating flow, which is directed to the upper discharge nozzle 4. Due to intensive rotation, the hard yellow phase is located on the periphery of the outgoing liquid column. The core of the stream containing the light phase is discharged through the upper discharge nozzle 4, while the heavy phase enriched part of the liquid passes through the channel between the upper discharge nozzle 4 and the inner surface of the ibechik b and entrains the initial product through the tangential feed nozzle 3 , enters the re-separation. The shell b is attached to the installation rods 7 to the lid 2 coaxially to the housing, outside the upper drain pipe, the upper section of the shell is located above the tangential feed pipe 3 to prevent the starting material from entering the circulation space between the shell b and the upper drain pipe 5, which can lead to degeneration of the circulation circuit. In order to prevent the creation of turbulent zones in the upper part of the housing 1, which worsen the separation, as well as to ensure a smooth rotation of the circulating flow, the cover 2 is made in the form of one and a half. The use of the proposed hydrocyclone will significantly simplify the process of separation of immiscible liquids and thin suspensions, reduce the production area, as well as reduce the energy intensity of the equipment. Claims of the invention A hydrocyclone containing a cylindrical housing with a lid, a tangential supply nozzle, axial drain and sand nozzles, installed coaxially with the drain nozzle and a cylindrical shell coaxially with the housing, characterized in that, in order to improve the quality of separation for the account in the circulation apparatus, the circular box, in order to improve the quality of separation for the account in the circulation device, the circulation box will have The open end of the cylindrical shell is located above the supply nozzle, and the housing cover has the shape of a half. Sources of information taken into account in the examination 1. For the Germany FRG 2720888, cl. B 04 C 5/13, 1977. 2. Mustafayev AM, Gutman BM Hydrocyclones in the oil refining industry, M., Nedra, 1981, p. bb, rice 1.5.4. 3. The author's certificate of the USSR 778808, cl. B 04 C 5/26, 1978 (prototype). g