RU112185U1 - OIL SEPARATOR - Google Patents

Abstract

1. Oil separator, containing a horizontal cylindrical body with elliptical bottoms, mounted on two saddle supports, one of which is movable, the second is fixed, along the cylindrical part of the body, coalescing hydrophobic nozzles are installed, located along the longitudinal axis of the body on both sides of the center, forming two chambers, the walls of which are the nozzles themselves, the wall of the body and four segments welded to the body, inside each of the chambers there are two longitudinal perforated collectors of the product injection system, in the longitudinal axis of the oil separator there are two perforated collectors of the clean water output system, in the lower part of the body there is sludge hydraulic washing system with nozzles evenly spaced at an angle, through which water comes out under pressure and the bottom sludge is washed out, circulating water for hydraulic washing is injected through the nozzles located on one of the elliptical bottoms, a system is located in the lower part of the body slurry outlet ma, consisting of perforated collectors and fittings, on top of the cylindrical part of the body there is a chamber for collecting oil, in which there are fittings for oil withdrawal, an oil-water interface sensor and an air vent, on the cylindrical part of the body and bottoms there are technological fittings and hatches - manholes, as well as fittings and couplings for the installation of instruments of control equipment. ! 2. The oil separator according to claim 1, characterized in that electric heating of the lower cylindrical part of the housing is provided for heating water during short stops in winter.

Description

The utility model relates to techniques for the purification of oil-containing water and can be used to purify water-circulation water containing oil products, preferably up to 100 mg / l, from oil products.

A device for cleaning oil-containing wastewater RU No. 2248327 C1, 2005, comprising a hydrocyclone with nozzles for supplying raw water, drainage of the upper drain and drainage of the lower drain, a sump equipped with vertical partitions not reaching the upper and lower parts of the sump, a pipe of drainage of the upper drain of the hydrocyclone tangentially attached to the cylindrical chamber of the lower discharge of the hydrocyclone in the direction of the swirling flow in the chamber and at a distance equal to 1.0-1.1 of the diameter of the chamber from its front end. The sump has distribution devices, an oil collector, and devices for discharging treated water, oil, and sludge.

The disadvantage of this device is also its low degree of reliability due to the need to completely shut down the device (apparatus) from operation with a complete disruption of its normal operation during repair and maintenance work and during emergency situations associated with the need to turn off hydrocyclones or cylindrical chambers (or a group of hydrocyclones and cameras) if necessary, replace them. At the same time, it also takes time to stop and start the installation, enter it into the optimal operating mode, which also reduces the cleaning effect.

The prototype of the utility model is a device for the treatment of oily wastewater according to patent RU No. 2313493 C1, 2007, including hydrocyclones with feed water through pressure tubular distribution rings, cylindrical chambers at the outlet of the upper and lower drains of hydrocyclones equipped with pressure tubular rings, a sump separated by vertical partitions to the working and buffer sections, the lower part of the sump in the center is equipped with a device for removing sediment, the space between the partitions is equipped with a hydrodynamic coarse-grained hydrophobic filter loading, the working section of the sump has tubular hole collectors-distributors of the lower and upper drains of hydrocyclones, located respectively one above the other, the buffer section of the sump is equipped with a tubular arcuate equal-shoulder hole collector and an arc-shaped chipper, a piping from the water pressure rings of the upper and lower discharges, as well as a bypass pipe connecting the supply pipe of the source oil containing sewage with a jumper, while the jumper pipeline is equipped with two valves installed on both sides of the connection point of the bypass pipe to the jumper; pipelines that discharge water from the upper and lower drains are equipped with valves installed up to the point of their connection to the jumper pipeline; the source water supply pipeline is equipped with shut-off and control valves installed between the pressure ring of the source water distribution and the connection point of the bypass pipeline to the source water supply pipe; the bypass pipeline is equipped with a means for swirling the source water stream, which is made in the form of a helical channel inclined to the axis of the bypass pipe, the channel being made with a width and a step gradually decreasing along the direction of movement of the source water stream, and formed by a guide rigidly and tightly fixed on the inner surface of the bypass pipe.

The disadvantage of this device is the design complexity and unreliability of work due to the need to completely shut down the device (apparatus) from work with a complete disruption of its normal operation during repair or maintenance work, as well as in emergency situations associated with the need to turn off hydrocyclones or cylindrical chambers, i.e. . groups (batteries) or individual hydrocyclones, cylindrical chambers of the battery.

In addition, when disconnecting, additional time is required to stop and start the device, enter it in the optimal operating mode, which also reduces the cleaning effect, in general, material, labor, time and energy costs also increase.

The utility model is aimed at improving the reliability and the effect of purification of oily wastewater while simplifying the design due to the possibility of erosion of the bottom sediment without stopping the apparatus, which occurs only during major repairs.

Since in the claimed utility model it is difficult to distinguish between known and distinctive essential features, the utility model formula is composed without division into restrictive and distinctive parts.

The solution to the problem is achieved by the fact that the oil separator contains a horizontal cylindrical body with elliptical bottoms mounted on two saddle supports, one of which is movable, the second is stationary, cobalt hydrophobic nozzles installed along the cylindrical part of the body located along the longitudinal axis of the body on either side of the center forming two chambers, the walls of which are the nozzles themselves, the wall of the body and four segments welded to the body, two longitudinally placed inside each of the chambers perforated collectors of the product introduction system in the longitudinal axis of the oil separator are two perforated collectors of the clean water outlet system, in the lower part of the housing there is a sludge washing system with nozzles evenly angled, through which water comes out under pressure and erosion of the bottom sediment, return water is introduced for hydraulic washing occurs through the nipples located on one of the elliptical bottoms, in the lower part of the body there is a pulp output system consisting of four perforations collectors and fittings, on top of the cylindrical part of the housing there is an oil collection chamber, in which there are nozzles for oil output, an oil-water and air-phase separation sensor, technological fittings and manholes, as well as a fitting and couplings for the installation of instruments of control equipment.

In addition, the oil separator may have to heat the lower cylindrical part of the housing for short-term stops during the winter period.

These signs are essential and interconnected causally with the formation of a combination of essential signs sufficient to achieve the specified technical result - to increase the reliability and the effect of purification of oil-containing wastewater while simplifying the design due to the possibility of erosion of the bottom sediment without stopping the apparatus.

The utility model is illustrated by a specific implementation example which, however, is not the only possible, but clearly demonstrates the possibility of achieving this set of features of a technical result.

The utility model is illustrated by drawings, where:

Figure 1 shows a sectional view of an oil separator;

figure 2 is a top view;

figure 3 is a side view;

figure 4 section aa figure 1;

figure 5 section BB of figure 1.

The oil separator contains a horizontal cylindrical body 1 with elliptical bottoms 2 (Fig.1, 2). The housing 1 is mounted on two saddle supports: one support 3 is movable, and the second support 4 is stationary. Along the cylindrical part of the housing 1, a layer of coalescing hydrophobic nozzles 5 (Fig. 4) is installed, located along the longitudinal axis of the housing 1 on both sides of the center, forming two chambers 6 and 7, the walls of which are the nozzles 5, the wall 8 of the housing 1 and four segments 9, welded to the housing 1. Inside each of the chambers 6 and 7, two longitudinal perforated collectors 10 and 11 (DN) of the input system 12 (A) of the product (contaminated water) are placed. In the longitudinal axis of the oil separator body 1, there are two perforated collectors 13 and 14 of the clean water outlet system 15 (B). In the lower part of the housing 1 there is a sediment hydraulic washing system with nozzles 16 evenly spaced at an angle through which water exits under pressure and erosion of the bottom sediment. The input 17 (L1, L2) of circulating water for hydraulic washing occurs through the nozzle 18 located on one of the elliptical bottoms 2. In the lower part of the housing 1 there is a pulp output system consisting of four perforated collectors 19 and nozzles 20 (K1 and K2) for output pulp and sludge (H1 and H2). On top of the cylindrical part of the housing 1 is a chamber 21 (5) for collecting oil, in which there are a fitting 22 (B) for oil output, a level sensor 23, an oil-water phase separation, and an air vent 24 (I). Technological fittings 25 are located on the cylindrical part of the housing 1 and bottoms 2, for example, for a safety valve (P), a backup valve (G), sampling (31 and 32), drainage (U) and manholes 26 (G1 and G2) for service, as well as the fitting 27 and the coupling 28 for installation of devices, temperature sensor (T), pressure sensors (E1, E2)

In addition, the oil separator may have for heating water during short stops in the winter, electric heating 29 of the lower cylindrical part of the housing 1.

The device operates as follows.

Contaminated water with a petroleum product content of up to 100 mg / l (short-term emissions of up to 300 mg / l is allowed) is supplied to the input 12 of an oil separator (nozzle A), inside the apparatus the flow is divided into two parts and distributed through perforated collectors 10 and 11 in a horizontal diametrical section of the apparatus by the volume of the device.

Inside the oil separator, the flow moves perpendicular to the longitudinal axis of the apparatus from the periphery to the center of the apparatus, where along the path of movement it passes a layer of coalescing hydrophobic nozzles 5. The average velocity of water in the apparatus is 1.0-1.5 mm / s. Such a low speed ensures the absence of high speeds for mixing water in the oil separator.

When passing through a layer of coalescing hydrophobic nozzles 5, the main part of the oil product droplets deposited on the said nozzles 5 forms a film of oil product, which, due to the difference in density, floats up along the nozzles 5 and forms a layer of oil product in the upper part of the apparatus, and then in the chamber 21 for collecting oil. As filling, the oil product layer, the lower level of which is monitored by the oil-water phase separation sensor 23 through the nozzle 22 (C), is periodically dumped due to the residual pressure in the oil separator into a separate container (not shown in the drawings).

At a concentration of oil products in contaminated water at the level of 100 mg / l, oil product discharge is carried out approximately no more than once a day.

Suspended substances contained in the circulating water during the passage of the nozzle 5 are deposited in the lower part of the apparatus.

To flush the bottom sediment, the apparatus does not need to be stopped and a device for erosion of the bottom sediment is provided with a jet of water supplied through input 17 (L 1 and L2). The washed-out bottom sediment (pulp) is discharged from the sedimentation tank through the nozzle 20 (K1 and K2) to discharge the pulp and sludge (Н1 and Н2).

Oil separator service is performed during the overhaul of the entire plant. Then they stop the device, empty it, purge, steam, and then service it.

The advantages of the proposed device are high reliability, high cleaning effect and high specific productivity; uniform collection of purified water and sludge; sufficiently complete and quick removal of sludge with the complete exclusion of manual labor and downtime of the installation for cleaning, the ability to remove sludge at any time of the year; the ability to carry out repair, preventive and emergency work without stopping the operation of the device and the compactness of the device.

The proposed constructive solution improves the reliability and the effect of purification of oily wastewater while simplifying the design due to the possibility of erosion of the bottom sediment without stopping the apparatus, which occurs only during overhaul.

The utility model meets the condition of patentability "industrial applicability", since it is feasible using known means of production.

Claims (2)

1. An oil separator containing a horizontal cylindrical body with elliptical bottoms, mounted on two saddle bearings, one of which is movable, the second is stationary, cobalt hydrophobic nozzles installed along the cylindrical part of the body located along the longitudinal axis of the body on either side of the center, forming two chambers, the walls of which are the nozzles themselves, the wall of the casing and four segments welded to the casing, two longitudinal perforated collectors si are placed inside each of the chambers product entry systems, in the longitudinal axis of the oil separator there are two perforated collectors of the clean water outlet system, in the lower part of the casing there is a sludge washing system with nozzles evenly angled, through which water comes out under pressure and erosion of the bottom sediment occurs, return water is introduced for hydraulic washing through the fittings placed on one of the elliptical bottoms, in the lower part of the housing there is a pulp output system consisting of perforated collectors and fittings, on top on the cylindrical part of the body there is a chamber for collecting oil, in which there are nozzles for oil output, an oil-water and air-phase interface sensor, technological fittings and manholes, as well as a fitting and couplings for installing control equipment devices, are located on the cylindrical part of the body and bottoms . 2. The oil separator according to claim 1, characterized in that for heating the water during short stops in the winter, an electrical heating of the lower cylindrical part of the housing is provided.