SU1224000A1 - Special hydraulic cyclone for purifying water from petroleum - Google Patents

Description

The invention relates to devices for the treatment of wastewater from oil and oil products in the field of centrifugal inertia forces and can be used in the oil, oil refining and other industries.

The aim of the invention is to increase productivity and increase separation efficiency.

Figure 1 shows a spiral hydrocyclone, section; figure 2 - section aa in figure 1; Fig, 3 section bb in Fig.2; on figa - section bb In figure 2.

The spiral hydrocyclone includes a cylindrical housing 1, conical diaphragms 2, between which spiral-shaped conical shelf 3 and perforated spiral-shaped conical insert 4 with arched slots 5 are placed, with insert 4 installed under spiral-shaped conical shelf 3 with an angle of inclination, sjeH above the angle of the shelf 3. In the central part of the housing 1 there is a branch pipe 6 for discharging oil products with perforations in the arch of the arched slots 7, while the arched slots 5 and 7 are made in a direction opposite to the flow. A tangential inlet 8 is installed in the lower part of the housing 1 for supplying the wastewater. The purified water and mechanical impurities are discharged through the pipes 9 and 10.

The spiral hydrocyclone for the purification of water from oil works as follows.

Sewage water is supplied to the part of the dilindroconic housing 1 of the spiral hydrocyclone through a tangential supply pipe 8 under pressure and. twists. Under the action of centrifugal forces of inertia, large particles of mechanical impurities are thrown to the walls of the housing 1 to descend to the pipe 10, from where they are unloaded, In the main flow: “liquidity, lifting along the spiral trajectory to the upper part of the hydraulic unit 40002

cyclone ,. separation of the system takes place in accordance with the specific gravity of the section of its products, and is easier; phase enriched

5 oil, is concentrated in the near-axon region at the nozzle b for removal of oil products and through the arched slots 7 enters its inner zone. When sunrise n1; eat fluid

10, under the spiral conical insert 4, a layer of floating petroleum products is formed, which, together with part of the waste water, are continuously diverted through the slots 5 into the space between

13 by a conical shelf 3 and insert 4. Since the flow rate in this zone is an order of magnitude lower than in the osken channel, an intensive process of coalescence of dispersed oil droplets occurs in it and their final separation from water under the action of gravitational forces. The oil-rich phase also enters the nozzle 6 for drainage

25 oil products through the slots 7. Making the arochka slots 7 by convexity towards the flow contributes to the swirling of the incoming liquid inside the pipe 6 and the distribution of water in the peripheral part, and oil in the central part. The constant influx of light phase from the space between shelf 3 and insert 4 contributes to the expansion in the pipe 6 of the region containing petroleum products, and as a result of this - the gradual displacement of water from the pipe 6. The upper and the conical diaphragms 2 prevent the contact of purified water is withdrawn from the spiral hydrocyclone through pipe 9, from petroleum product 1 and removed mechanical impurities.

Thus, the creation in the d) adrocyclone of two areas of separation of heterogeneous systems of the type: liquid – liquid with different flow rates: • It allows to increase the overall productivity of such devices without reducing the efficiency of the process.

1

BUT

five

FIG. 2

Fig.Z

8-in

Cput.

Editor M, Pandora

Compiled by D. Baranov

Tehred I. Gaidosh Proofreader G, Reshetnik

Order 1861/8. Circulation 5 7Subscribe

BHPfHroi USSR State Committee

for inventions and discoveries N3035, Moscow, Zh-35, Raushsk nab. d, 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

SPIRAL HYDROCYCLON FOR WATER TREATMENT FROM OIL, including a cylindrical conical housing with a tangential inlet pipe, pipes for the drainage of purified water, oil products and mechanical impurities, conical diaphragms and a spiral conical shelf between diaphragms installed on a perforated oil pipe, which differs for in order to increase productivity and increase separation efficiency, it is equipped with a perforated spiral conical insert with an inclination angle smaller than the inclination angle on the conical shelf, while the inner edge of the insert is attached to the pipe for the removal of petroleum products, and the outer edge is attached to the outer edge of the spiral conical shelf, and the perforation in the spiral conical insert and the G pipe for the removal of oil products is made in the form of arched slots directed by the bulges towards the flow . SU „„ 1224000 t ΐζ