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OIL CLEANING SYSTEM SUITABLE FOR |
Oil cleaning systems are custom built to suit the specific requirement of customer. Normally our plants are rated for filtration of 1, 3, & 5 micron and dehydration up to 20, 50 & 200 ppm. However, plants with particular filtration rating can be offered. It is portable mounted on frame with castor wheels and will be suitable for on line oil cleaning. It can be permanently fitted on the oil tank of the system for continuous removal of contaminants and maintaining the oil quality. The system is suitable for removal of suspended particles and free moisture separation. The system normally consists of stage wise separation of contaminants. It is normally a combination of our standard modules, developed for removal of specific contaminants e.g. Spirafuge for coarse dirt filtration and freewater separation. Magnetic filter for ferrous particles filtration, Coalescer for free and emulsified water separation and Vacuum Dehydration for fine moisture removal. Systems are compact in design and are easy for operation and maintenance. Systems do not require any attendant during filtration. The system is generally as per the schematic diagram and will contain some of the following components. -------------------------------------------------------------------------------------------------------------------------- MAJOR COMPONENTS 1) PRE – FILTER: In this major portion of coarse dirt is removed. Depending upon the type of contaminants pre-filter can be chosen. Magnetic Strainer: It is a magnetic strainer to remove magnetic and coarse particles from oil. Magnetic Separator : It is designed to remove magnetic particles from oil. Disc Magnets are mounted on a shaft driven by geared motor at very slow speed. Lower part of the discs are dipped in the oil and upper parts are provided with wiper / scrubber for removing particles collected on magnets. It is specifically provided where ferrous contamination is more especially in case of cutting oils. 2) INTERMEDIATE FILTER: It is normally provided to increase the life of fine filter elements. Normally it is cleanable to reduce filter replacement cost. Bag Filter: It is a bag type filter to remove suspended particles up to 10 microns. It is provided to increase the life of the fine filter elements. It has large dirt holding capacity and can be cleaned easily for reuse. Spirafuge: It has Filter Element at center and spiral oil path at the periphery of the chamber. Coarse dirt separates here because of centrifugal force developed by spiral oil motion. Dirt is collected at bottom because of vortex and on the walls of Filter Element. Filter Element can be cleaned by opening the drain valve during running or automatically by sensing backpressure developed by dirt accumulation. It is provided with pressure gauge for filter clogging indication. 3) FINE FILTER: It is provided to remove all suspended particles, upto 1 or 3 microns as per the requirement. It contains moulded cellulose filter elements of the required rating. These filters are normally provided in degassing chamber or in Coalescer or separate chamber. Gauge is provided to indicate the filter clogging. Coalescer / Separator: The dictionary definition of coalescence is “To grow together; to unite into one body or mass”. As applied to the technology of oil water separation, coalescence is usually accomplished by a first stage of fibrous media that allows oil to pass through but attracts and “stores” the emulsified water until these tiny particles unite, or coalesce, to become large droplet of water. This free water is then released to a second stage utilizing water repellant media. It will be provided with water drain tank, for removal of separated water periodically. Pressure gauge will be provided to indicate the clogging of filter. Centrifugal Filter: In centrifugal Filter oil passes through a rotor spinning at high speed so that particles in the oil are deposited on the inner wall of rotor to form a dense cake. It is particularly more suitable for permanent fitting on the oil tank. It has more dirt holding capacity as compared to normal depth filter of fine micron rating. Centrifugal separation is most suitable way to remove small hard metallic particles. 4) VACUUM DEHYDRATOR: It is provided to remove moisture from oil to the level of 50 ppm or less where water contamination is critical. It is M.S. fabricated chamber with shower arrangement, rasching ring tray, sight glass, float switch and vacuum pumping system. The oil dispersed while passing through fine filter will be sprayed on raschig ring tray to have an exposure of oil film to vacuum, because of which moisture removal rate will be increased. Degassing Chamber will be evacuated with rotary oil sealed vacuum pump, moisture trap, valves etc. 5) OIL TRANSFER AND CIRCULATION SYSTEM: The plant will have two pumps for oil transfer and circulation. Both pumps will be positive displacement gear type, directly coupled with electric motor. The plant will have necessary valves and piping to ensure easy operation and maintenance as per the schematic diagram. 6) CONTROL PANEL: Centralized control panel is provided for easy and safe operation of the plant as per requirement of customer. 7) OIL TESTING KIT: Oil testing kit suitable for measuring parameters such as Oil contamination (Patch test), Moisture content, Viscosity, Total Acid Number can be offered alongwith system. Some of commonly used combinations are :- |
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