SU1544884A1 - Device for collecting oil off water surface - Google Patents

Abstract

The invention relates to environmental protection, in particular to cleaning the surfaces of reservoirs from oil and oil products, and is intended to collect the latter from the surface of the water. The purpose of the invention is to increase the efficiency of the device in operation. A device for collecting oil from the surface of the water contains an ejector 1, a settling tank 5, a compressor for injecting a working agent and a suction funnel 2. The tank 5 is equipped with a manifold 10, which is connected via pipe 8 to the outlet of ejector 1. Suction funnel 2 is connected to the suction cavity of ejector 1 The collector 10 is installed in the lower part of the tank 5. On the inner surface of the suction funnel 2 is a flat hydrophobic element 9 made of polyurethane foam. When the ejector 1 is in operation, oil is absorbed from the surface of the water. In this case, due to the presence of the hydrophobic element 9, a mixture containing a high percentage of oil enters the funnel 2. The oil / water mixture enters further into the settling tank 5 through the reservoir 10, where it is dispersed, and air bubbles emanating from it float the oil-water mixture, thereby accelerating its separation into fractions. The device is effective for collecting oil films of any thickness, does not require additional energy and time to separate the collected mixture. 1 hp ff, 2 ill.

Description

The invention relates to environmental protection, in particular to cleaning the surfaces of reservoirs from oil and oil products, and is intended to collect the latter from the surface of the water.

The purpose of the invention is to increase the efficiency of the device.

FIG. 1 shows a device for collecting oil from a water surface; FIG. 2 is a section A-L in FIG. one.

The device includes an ejector 1 Equipped with a suction funnel 2, which is installed above the surface (zods 3 on the float "Ejector 1 is connected to the settling tank 5 and the compressor 6 through pipelines 7 and 8. The suction funnel 2 is equipped with a element 9 made of a hydrophobic material, for example From polyurethane foam, which is placed directly on the surface of the water. Inside the settling tank 5 there is a collector 10 with radial taps 11 plugged at the ends and having openings 12 below, increasing in diameter to the periphery ,, The settling tank 5 also has a hole, an oil 13 and a water k,

The device works as follows.

Using the compressor 6, the working agent — air — is injected into the ejector 1 through the pipeline 7, a vacuum is created in the latter, as a result of which a suction funnel 2 equipped with a hydrophobic element — polyurethane foam 9 — is sucked in from the water surface. Due to the fact that polyurethane foam is with a hydrophobic material that has the ability to pass oil through itself and repel water, a mixture enriched in oil will flow into the ejector 2 of the ejector 1.

A vacuum is created in the ejector to maximize the use of the property of the hydrophobic element of element 9. The amount of water entering the settling tank 5 can be controlled by the amount of vacuum in the ejector 1. Thus, when the values of vacuum are 120–220 mmHg. the percentage of water in the collected water is from 82 to 52. The indicated vacuum range is the most optimal from the point of view of operating efficiency.

ten

15

20

35 40

25

thirty

45

50

55

The use of air as a working agent, which is intensively in contact with the collected oil-water mixture and which is not a component of the formation of an emulsion, excludes the emulsification of oil with water.

Transporting the three-component air-oil mixture to the settling tank 5 through the pipeline 8 through the reservoir 10 with holes 12 allows the entire area of the settling tank to be used evenly and to achieve an intensive separation of the oil / water mixture. The holes 12 are directed downward, which contributes to the fragmentation of the streams emerging from them and to an increase in the surface of the mixture in contact with the air cushion. In addition, the bubbles of air dispersed in the ejector 1 and the radial branches 11, when moving upward colliding with oil particles, break the hydration shell, capture the droplets of emulsified oil and transport them to the upper part of the remaining container 5.

The device makes it possible to intensify the process of separation of the oil-water mixture in the settling tank 5 into oil and water, i.e. oil dehydration without additional expenses of energy and time.

The water purified from oil from the settling tank 5 is returned back to the reservoir by the outlet AND, and the non-outlet by outlet 13 is used for its intended purpose.

The device allows reducing the water content of the collected oil products by a factor of time due to the use of a hydrophobic element. The content of emulsified oil in the collected liquid is also reduced at no additional cost, which indicates the effectiveness of the device.

With the help of the proposed device it is possible to effectively collect a film of oil of almost any thickness.

Claims (2)

1. A device for collecting oil from the surface of the water, including a suction funnel installed by a tapering side up, a device for creating an air flow, a settling tank and a pipe connected to it, characterized in that, in order to increase efficiency, the settling tank is provided with a collector with radial perforations from the bottom branch pipes, the device for creating an air flow is made in the form of an ejector and connected to the tapering part of the funnel, while the collector is installed in the bottom part of the sediment second capacitance and coupled to the ejector means trubo15I 15I884 wires, and the suction funnel is provided with a flat hydrophobic element attached along the perimeter to its inner surface. 2. The device according to l. 1, about the l and ch and th e with the fact that the hydrophobic element is made of polyurethane foam. Fig 2