RU2241737C1 - Method of utilization of waste motor oil - Google Patents

Abstract

FIELD: production of diesel four-stroke engines.

SUBSTANCE: the invention presents a method of utilization of waste motor oil, which may be used in the fields dealt with operation of the diesel four-stroke engines. The method provides, that the waste motor oil is heated up to 70-80°С and fed to the apparatus of centrifugal purification, where. In the apparatus of centrifugal purification the waste motor oil is separated into oil phase and water-oil slime. The water-oil slime then is exposed to filtration. The filtration allows to separate the water phase and the oil slime. The oil slime may be used further in production of asphalt. The oil phase is exposed to purification by chemisorptive and adsorptive filtration. Then the purified waste motor oil is added in an amount of no more than 5 % as an additive to the solar oil used for the diesel four-stroke engines without a turbocharger and in an amount of no more than 11 % - as the additive to solar oil for the diesel four-stroke engines with a turbocharger. The method is practically environmentally appropriate and low-cost. There is no necessity to accumulate a fair quantity of the waste motor oil intended for transfer for regeneration or as boiler fuel oil. At that the cost of the regenerated oil practically becomes equal to cost of the diesel solar oil the diesel four-stroke engines and also to increase the service life of their cylinder-piston units.

EFFECT: the invention allows to equal the cost of the regenerated oil practically becomes equal to cost of the diesel solar oil the diesel four-stroke engines and also to increase the service life of their cylinder-piston units.

1 ex

Description

The invention relates to methods for the disposal of used engine oil (OMM) and can be used in areas where four-stroke diesel engines are used.

A known method of disposal of OMM as boiler fuel (EP 0387235, 09/12/1990) [1]. This method is environmentally harmful, since OMM contains a large amount of metal-containing and heterogeneous substances, which, when burned, produce harmful emissions that are harmful to human health and the environment, and the equipment of boiler houses prematurely fails.

An object of the present invention is to provide a more efficient method for using waste oils as additives to diesel fuel. In this case, there is no need to accumulate a significant amount of used engine oil for transmission to generation or in the form of boiler fuel. At the same time, the cost of used oil almost becomes equal to the cost of diesel fuel. It should also be noted the increase in the service life of the cylinder-piston group.

The problem is solved due to the fact that the used engine oil is heated to 70-80 ° C and fed to a centrifugal cleaning apparatus for separation into the oil phase and water-oil sludge. The sludge is predominantly filtered together with the initially separated aqueous phase, as a result of which the aqueous phase and the oil sludge are separated. Oil sludge can be further used in the production of asphalt. The oil phase is subjected to purification by chemisorption and adsorption filtration, after which the purified engine oil, which is used in an amount of not more than 5% of diesel fuel additives for diesel four-stroke engines without a turbocharger and in an amount of not more than 11% of diesel fuel additives for diesel four-stroke engines with turbocharger.

Example.

The used engine oil is heated to 75 ° C and fed to a centrifugal purification apparatus, in which, as a result of coalescence, separation occurs into the oil phase and water-oil sludge. Heating OMM to 75-80 ° C reduces the viscosity of the oil for further oil treatment by centrifugation. Preferably, the sludge, together with the initially separated aqueous phase, is filtered, resulting in the separation of the aqueous phase and oil sludge. Oil sludge can be further used in the production of asphalt. The oil phase is purified by chemisorption and adsorption filtration. The resulting refined motor oil is used in an amount of not more than 5% diesel fuel additive for four-stroke diesel engines without a turbocharger and in an amount of not more than 11% diesel fuel additive for four-stroke diesel engines with a turbocharger. The addition of OMM in an amount of not more than 5% of an additive to diesel fuel for diesel four-stroke engines without a turbocharger and in an amount of not more than 11% of an additive to diesel fuel for diesel four-stroke engines with a turbocharger is due to the fact that the use of a higher percentage of the additive can lead to increased smoke and engine power loss.

The technical result provided by the invention is that the proposed method of disposal is practically environmentally friendly and cheap, there is no need to accumulate a significant amount of used motor oil for transmission to generation or in the form of boiler fuel. At the same time, the cost of used oil almost becomes equal to the cost of diesel fuel. Also increases the service life of the cylinder-piston group.

Claims (1)

A method of disposing of used engine oil by introducing it as an additive to diesel fuel, characterized in that the used engine oil is heated to 70-80 ° C and fed to a centrifugal treatment apparatus for separation into an oil phase and a water-oil sludge, then filtered. As a result, the aqueous phase and oil sludge are separated, which can be further used in the production of asphalt, and the oil phase is subjected to purification by chemisorption and adsorption filtration, and then added to in an amount of not more than 5% of an additive to diesel fuel for diesel four-stroke engines without a turbocharger and in an amount of not more than 11% of an additive to diesel fuel for diesel four-stroke engines with a turbocharger.