Abstract: A system for cleaning contaminated fuel in a fuel tank by introducing a suction line to substantially the lowermost part of the tank for suctioning off free water and heavy contaminants settled in the tank. The materials are then routed via suction to a first strainer, where free water and contaminants are trapped and retrieved. The filtrate then moves to a separation vessel, whereby the fuel is filtered through a primary filter medium, and the contaminants settle to the bottom of the vessel and are collected. The filtered fuel is then routed to a tertiary filter before being returned to the fuel tank to agitate the contaminants and facilitate this removal by the suction side of the system. This closed loop process is continued until the filtered fuel is substantially free of contaminants.

Abstract: The fuel cleaning system of the present invention includes removal of water and sludge which is accomplished using a gravity separator with a mist extracting means utilizing a large commercial cartridge type filter. The filter removes particles larger than 20 microns plus any water that was not removed in the gravity separator. Clean fuel from the filter is discharged at the bottom of the fuel tank at high velocity through a small opening. This agitates the water and sludge. The suction side of the system is located approximately one inch above the high velocity discharge where it picks up the water and sludge for removal by the separator and filter sections. During the process, water and sludge are drained from the separator and filter as accummulated. The system is powered by an explosion-proof electric motor driving a pump which handles approximately 5 gallons per minute.

Abstract: The fuel cleaning system of the present invention includes removal of water and sludge which is accomplished using a gravity separator with a mist extracting means utilizing a large commercial cartridge type filter. The filter removes particles larger than 20 microns plus any water that was not removed in the gravity separator. Clean fuel from the filter is discharged at the bottom of the fuel tank at high velocity through a small opening. This agitates the water and sludge. The suction side of the system is located approximately one inch above the high velocity discharge where it picks up the water and sludge for removal by the separator and filter sections. During the process, water and sludge are drained from the separator and filter as accumulated. The system is powered by an explosion-proof electric motor driving a pump which handles approximately 5 gallons per minute.