SU608536A1 - Apparatus for separating oil from oil-water-air mixture - Google Patents

Description

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The invention relates to the field of preventing pollution of the sea by oil and can be used to purify water from oil contained in waters discharged overboard during the drainage of boiler and boiler compartments of ships.

A device for separating oil from an oil / air mixture formed in machine-boiler rooms of vessels is known, comprising a separator, a collection tank, an oil tank with an air discharge channel and a float valve 1.

A disadvantage of this device is the impossibility of discharging oil products from the oil tank into the collection tank without disturbing the vacuum regime of cleaning oily water, which reduces the performance of the device and impairs its cleaning ability.

A device for separating oil from a mixture of oil, water and air is known, which includes a separator, an oil tank, an air outlet channel, a water inlet channel 2.

However, in such a device, turbulence and mixing of sedimentary layers of water and oil products in the upper part of the separator occur, which occur when water enters it to displace oil products from the oil tank, which degrades the cleaning ability of the device, the vacuum is disturbed.

cleaning mode due to the stop of the pump to allow the discharge of oil from the oil tank, which leads to a decrease in the performance of the device.

The closest to the invention in technical essence and the achieved effect is a device for two-stage separation of oil-containing water, including a vacuum separator, reported by

a branch pipe with an oil tank, and a pumping body with a suction and pressure port 3.

The discharge port of the transfer pump through the solenoid valve is connected to the construction pit at the inlet of the vacuum separator. Drainage of oil from the oil skid is carried out by the pumping body that supplies the oily water directly to the separator.

However, in this device, when oil is discharged, oily water enters the sludge chamber and is emulsified in the pumping body, which reduces the ability of the device.

Termination of the separation process at the time of discharge of petroleum products also reduces the performance of the device.

The aim of the invention is to improve the performance of the device and improve

cleaning quality of the original mixture.

This is achieved by the fact that in the proposed device, the branch pipe is equipped with an automatic valve, and the discharge pipe of the pumping body is connected to a pipe connected to the automatic valve.

Providing an automatic valve to the branch pipe contributes to blocking this channel when water is injected to displace oil products, thereby creating the possibility of creating pressure in the oil tank to drain oil products without causing a break in the vacuum cleaning mode in the separator, which improves the cleaning capacity and improves the performance of the device.

The connection of the discharge pipe of the pumping unit, its organ to the automatic valve, eliminates the flow of oily water into the vacuum separator, their emulsified water in the pump, and the violation of the vacuum cleaning mode, which improves the cleaning capacity and improves the performance of the device.

The drawing shows the proposed device.

The device consists of a vacuum separator 1, communicated with the oil tank 2 by a branch pipe 3, equipped with an automatic valve 4. The vacuum separator 1 via a pipe 5 containing a device for maintaining the level 6 is in communication with the receiving pipe of the pumping body 7, the discharge pipe 8 of which is connected to the pipe 9 discharge of purified water containing a spring-loaded valve 10, as well as a pipe 11, equipped with a solenoid valve 12 connected to the automatic valve 4.

The oil tank 2 is connected via a pipe 13, equipped with a non-return valve 14, to the tank 15 of the oil collection and using the pipe 16 to discharge air, on which the solenoid valve 17 is installed, communicated with the device 6 to maintain the level. In addition, the vacuum separator 1 is equipped with a pipe 18 for receiving water from the well 19, and the oil sump 2 is equipped with a sensor 20 for the upper level of oil products and a sensor 21 for the lower level for oil products.

During operation of the device, due to the discharge created by the pumping body 7, the oily water through the water inlet nozzle 18 comes from the well 19 to the vacuum separator 1, and from there through the nozzle 9 the drained water is drained overboard. By virtue of the device 6 for maintaining the level in the oil tank 2, a constant level is maintained. Air released

from water at a decrease in pressure, it is removed through the pipe 16 of the air outlet.

Oil products released in the vacuum separator 1 through the outlet pipe 3 enter the oil tank 2. When oil products accumulate in the oil tank 2, up to the sensor 21 of the lower level of oil products, the electromagnetic valve 17 is closed and the electromagnetic valve 12 is opened, due to which purified water flows through pipe 11 in the automatic valve 4, which separates the vacuum separator 1 and the oil tank 2.

At the same time, the purified water enters the oil tank 2, displacing oil products from it through pipe 13 into the tank 15 for collecting oil products.

This eliminates the possibility of the entry of petroleum products into the air outlet 16 due to the formation of an air cushion therein with the solenoid valve 17 closed.

After the oil has been drained, when the water level sensor 20 reaches the top level of pephenic products, the electromagnetic clanan 12 is simultaneously closed and the electromagnetic valve 17 is opened, so that a vacuum equal to the vacuum in the vacuum separator 1 is restored in the oil tank 2, the vacuum separator communicates with the oil tank 2.

In order to increase the resistance of the pipe 9 to drain the purified water, to create the pressure necessary to displace oil products from the oil tank 2 and to ensure reliable operation of the automatic valve 4, a spring-loaded valve 10 is installed on this pipe.

Claims (3)

1. The patent of Germany No. 1005868, cl. 65th 42, 1957. 2. The patent of Germany No. 952697, cl. 65a2 42, 1956. 3. USSR author's certificate No. 496036, cl. B 01D 17/02, 1976.