Liquid purification or separation – With movable support
Patent
1993-01-04
1995-06-27
Nessler, Cynthia L.
Liquid purification or separation
With movable support
2102423, 210396, 210402, 210DIG5, E02B 1504
Patent
active
054276810
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a device for removing oil or oil-containing substances from a foreign liquid, in particular water, with a system for collecting the oil.
2. The Prior Art
Such devices are known in many different forms and are mainly used for cleaning oil-contaminated waters or seas. A major part of the known plants operates according to the suction principle, with exploitation of the knowledge that oil is lighter than water and floats on the surface of water. Before the oil is drawn off the surface of the water by suction, so-called oil barriers, for example in the form of inflatable hoses are put into place with most of the conventional plants, within which barriers the oil can be collected on the surface of the water. Furthermore, an oil-collecting ship has been built in the meantime, which is divided in two halves in the direction of travel, which halves are connected with one another in the stern zone via a joint. For removing the oil by suction, the two halves are folded apart and then serve as a collection barrier for the oil. Said oil-collecting ship is currently operating under the name "Mellum".
However, it has been found that the known plants have only a relatively low collection capacity and that they, therefore, do not operate very efficiently. They are thus usable only for cleaning locally contaminated water, thus waters with a relatively small contaminated area. For cleaning larger waters or even seas such as, for example the currently oil-contaminated Persian Golf, the known plants and devices are overtaxed because the cleaning would take months to years in such cases. Furthermore, the known plants and devices are quite complicated in their structure and thus susceptible to maintenance.
Also, chemical cleaning of oil-contaminated water has been proposed on various occasions. In connection with one of said processes, chemical additives are added to the water for the purpose of bonding the oil. However, in such a case, the chemical additives bonding the oil must then be removed, which is no less problematic than the direct removal of the oil. Another problem is that a major part of the chemical binding agents is not compatible with the environment as well.
SUMMARY OF THE INVENTION
Therefore, the object of the invention is to create a more efficient and structurally simpler device of the afore-mentioned type for removing oil or oil-containing substances from a liquid, in particular water, without chemical treatment of the oil.
Said object is resolved in that a device of the afore-mentioned type comprises oil-contaminated liquid, open at the ends for receiving the liquid, and rotatable around its longitudinal axis, with its walls being treated on their surface in such a way that they are particularly favorable to adhesion vis-a-vis oil and oil-containing substances; and stripping the oil and the oil-containing substances from the wall of the tube and passing them on to a collecting system.
Accordingly, the device according to the invention contains at least one tube that is at least partially immersed in the oil-contaminated liquid. So that the oil-contaminated liquid can flow through the tube, the latter is open at both ends. The surface of the wall of the tube is treated in such a way that it is particularly favorable to adhesion vis-a-vis and oil-containing substances. In this way, oil and oil-containing substances can particularly readily deposit on the walls of the tube, whereas the actual liquid is substantially repelled. In order to remove the oil and the oil-containing substances from the walls of the tube and pass them on to the collecting system, provision is made for at least one stripping element. The stripping element rests against the wall of the tube. The stripping effect is achieved by a relative motion of the stripping element and the tube, which is rotated around its longitudinal axis and its wall is passed along the stripping element, which then removes the oil from the wall of the tube.
The invention works in a
REFERENCES:
patent: 2242861 (1941-05-01), Keene
patent: 3612277 (1971-10-01), Van Stavern et al.
patent: 3685653 (1972-08-01), Van Stavern et al.
patent: 3850807 (1974-11-01), Jones
patent: 4220533 (1980-09-01), Baer et al.
patent: 4360429 (1982-11-01), Morris
patent: 4473469 (1984-09-01), Ayroldi
patent: 4514299 (1985-04-01), Ayroldi
patent: 4681680 (1987-07-01), Delons et al.
Gutec mbH Gesellschaft fur Umweltschutz und Technik
Nessler Cynthia L.
LandOfFree
Oil removal device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil removal device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil removal device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-284725