What are Oil Skimmers?

Oil skimmers, also called degreasers, are degreasing equipment used in machine tool processing, spray coating, and food processing plants. Dynamic slanted oil skimmers are important equipment for oil spill recovery. Due to the poor matching between the water flow velocity and the speed of the oil recovery belt during operation, it is difficult to achieve ideal oil recovery efficiency. In order to grasp the oil-recovery mechanism and process of dynamic bevel skimmers and improve the oil recovery rate, the CFX software was used to establish a three-dimensional model of the oil-recovery process of dynamic bevel skimmers. Dimensional analysis and simulation were performed to analyze the typical oil-collection status The matching relationship between the water flow velocity and the recovery belt speed was studied. The simulation results show that under certain water flow velocity and oil film thickness conditions, different oil recovery belt speeds can cause different levels of oil surface rolling. The level of oil surface rolling can be used to qualitatively measure the oil recovery state of the oil skimmer and verify the oil recovery. The influence of belt speed on the oil skimmer's oil recovery state, the matching formula of water flow velocity and oil recovery belt speed was obtained, which can provide a basis for improving the oil skimmer's oil recovery rate.

Oil skimmers, also called degreasers, come in many types. Such as weir skimmers, tube skimmers, disc skimmers, etc. It is widely used in iron and steel plants, machine tool processing, spray coating, food processing plants, underground water tanks, waste water tanks, coolant tanks, cleaning tanks, auto repair plants, parking lots and other oil leakage treatment. Large-scale equipment can also be used for offshore oil spill cleaning.

Weir oil skimmer: It is based on the principle that the specific gravity of oil and water is different, and the oil slick floats on the water surface. Adjust the height of the weir of the oil skimmer just below the oil layer, so that the oil flows into the oil collecting tank, and is then pumped away, while the water is blocked outside the weir.

Tubular oil skimmer: It uses a certain length of ring-shaped tube made of oleophilic material to float on the water surface to absorb oil spilled on the water surface. The scraper device scrapes out the oil absorbed by the ring-shaped tube and stores it in a collection Device in the oil tank.

Belt oil skimmer: A mechanical device that uses a transmission belt to recover oil spilled on the water surface. The running of the transmission belt adheres the oil spilled on the water surface, guides the oil into the oil collecting tank through the scraper, and then pumps it to the storage device. The oil scraper belt is made of special corrosion-resistant steel and specially designed polymer materials, which is durable and durable.

It is well known that oil is non-polar and water is polar. According to similar laws of compatible physical physics, they are immiscible, and the density of oil is less than the density of water. Without stirring, the oil will float on the surface of water.

The oil scraper uses the specific physical characteristics between oil and water to continuously remove the floating oil in the night body through the continuous working of the endless steel belt to reduce the pollution degree of oil to water. It can be used as pretreatment before filtering.

Brush oil skimmer: A mechanical device that uses a brush to adhere to oil spills. The spilled oil adheres to the rotating brush and is scraped down into the sump, which is pumped into the storage setting by a pump.

Vacuum skimmer: It refers to a device that uses a suction pump or a vacuum oil storage tank to establish a vacuum and recovers the oil-water mixture through the pressure difference at the head of the skimmer.

Disc oil skimmer: refers to discs made of oleophilic materials that rotate in oil-water mixing. When the discs are spun out, the absorbed spilled oil is scraped into the oil collecting tank by the scraper and pumped to the storage device to spill oil. Recycling equipment.

Rope skimmer: It is a kind of oil skimmer. It uses a certain length of ring-shaped rope skimmer made of oleophilic material to float on the water surface to absorb the oil spilled on the water surface, and the oil absorbed in the rope is squeezed out by a roller squeeze device and stored in the oil collecting tank. installation. This type of oil skimmer is most commonly used in diving areas, rivers with a lot of garbage, and in ports. Such oil skimmers are usually fixed on land when collecting oil in narrow waters.

Vortex oil slick collector: Generates a uniform centrifugal field through fluid pressure to achieve fluid centrifugal separation.

1. Simple structure, clever design, convenient installation and operation, and small maintenance.

2, strong versatility, suitable for indoor / outdoor large and medium-sized sewage treatment tanks, but also suitable for temporary emergency degreasing in some occasions.

3. Standing structure, which can be fixed or mobile installed.

4. Equipped with special high temperature and corrosion resistant oleophilic hydrophobic stainless steel ring belt. (Can be used at a temperature of 120 ° C and a PH value of 3-13).

5. Manual / automatic mode, it can be automatically stopped / started at any time within 24 hours without manual management.

6, double-sided degreasing, degreasing effect.

7, physical separation, no chemical pollution.

8, oil scraping steel belt can be configured according to the size of the liquid surface to the installation surface "A" + support frame "B" provided by the user.

In order to meet the increasing demand for oil pollution control equipment, high-speed fuel tankers, and the other is a spreader that can be mounted on fishing boats and tugboats for work. The first high-speed fuel tanker was developed by combining a ship with a higher operating speed with an effective oil recovery device. The 42-foot long ship has a speed of 21 knots and can quickly reach the scene in the event of a spill. This twin-hulled catamaran has an asymmetric body. It has a propulsion engine, fuel oil grab and oil spill recovery storage tank. The engine power is 110 to 225 horsepower, which is driven by a V-drive gear box. The pulp machine provides hydraulic power for the recovery unit. Oil spill recovery adopts D-P device. It uses an endless belt to collect the oil on the surface of the water, and then sends it to the recovery area, where the oil is separated by the buoyancy of the water. Then, the pump sends the oil to the 3000 US gallon. Collect the cabin. Impurities in oil slicks can cause the metal barrier to be blocked. Therefore, the metal grille should be regularly lifted and the impurities should be cleaned into the container on the deck. When the above oil spills during the voyage, a recovery device is provided between the hull Can be lifted above clean water. When there is no oil removal task, the shoot can be used as an ordinary work boat or caster. Another oil receiver uses the same DIP recovery device, which is set on a metal bracket, which is equipped with an inflatable floating chamber. A 40-horsepower diesel-powered unit mounted on a work boat provides hydraulic power for oil return units and pumps over long distances for control. The oil fence is used to concentrate the oil around the oil extractor, and it will be controlled back by the bracket mounted on the ship. The recovery efficiency of the recovery device matches the speed of the ship. The recovered oil can be pumped into a permanent or temporary container on the work boat deck. When the oil collector is moved, it can be packed in a 20-suction international standard container and placed on the shore or on the shore for use The full length is 19.5 suction and the volume is 4500 pounds. ^[1]

The lubricating oil skimmer developed by bAanaki Company in the United States can effectively remove contaminated lubricating oil, sludge and impurities in the most demanding environments. The 20 cm wide oil scraper of the oil skimmer can break the surface tension of the water that adsorbs oil and impurities. The textured pressure roller pulls the oil skimming belt over the roller and passes through the inclined wiper blade, and the oil slick is discharged from both sides of the oil scraper belt. A heated storage tank maintains the flowing state of the dirty oil and flows out through a discharge port with an inner diameter of 10 cm. The skimmer has a flow of 606 L / h. The skimmer is easy to install due to its smooth and compact design. It can be mounted on a flat surface or suspended on any cantilever or support. Removable protective cover facilitates maintenance and cleaning of the skimmer. Oil skimming belts can be customized to suit different occasions. The combination of ceramic wiper blades and reinforcing fiber belts enables the skimmer to handle thicker, more viscous liquid hydrocarbons at temperatures up to 150 ° C. Several random accessories help to use when the oil is particularly thick. The combined tail pulley or tail impeller can generate enough eddy currents to break through the bonded oil. When the bonded oil stains are washed away, the stains are attracted to the skimming belt and discharged. When the storage tank cannot discharge dirty oil due to temperature drop, a spiral drain can be used. A custom-made spiral drain is attached to the discharge pipe of the storage tank to send oil from the storage tank to the discharge tank. Other accessories are three-phase electrical lines, stabilizer bars and transport bags. This oil skimmer is mainly used in sewage ditch, underground storage tank, waste water tank and public facilities of metallurgical plants. ^[2]

Used in sewage treatment plants, machinery manufacturing plants, steel mills, oil fields, minerals, metal processing industries, parts cleaning machines, heat treatment systems, terminals, harbors, hydropower plants, food processing plants, restaurants, slaughterhouses, parking lots, Car repair shop,

Application of New Skimmer Oil Skimmer on Offshore Platform

The research on the settlement and separation theory of inclined plate skimmers has focused on the two aspects of droplet coalescence, floating and sedimentation. Based on this theory, a detailed process calculation of the oil skimming process of the inclined plate oil skimmer of a project is made in this paper. In addition, according to the characteristics of the project, a detailed summary of the choice of the level control method, mechanical structure design and piping design of the swash plate skimmer is made. Through this design, this swash plate skimmer It can meet the requirements of the platform and save costs, and has been successfully applied with good results.

Oil skimmer turntable oil skimmer

The working principle of the turntable oil skimmer A flat plate disk placed vertically rotates around a horizontal axis, and a part of the disk is immersed in water with an oil film floating on the surface. When the disc rotates, the oil adheres to the surface of the disc, is then scraped off and transported to the oil collection point through the tube groove. There are a variety of products that use the principle of turntable oil skimming, with different shapes and sizes. Literature search shows that the typical disc diameter is 280-800mm, which depends on different needs. Larger turntable skimmers are mainly used for oil spill removal in open seas, while smaller types are used in ports and inland waters. Obviously, the capacity of the turntable skimmer depends on the size and number of discs. As a typical example, an oil skimmer with 80 discs and a disc diameter of 820mm can collect 400 tons of oil per hour, and is equipped with 32 discs and disc diameters. ^[3]