Combustion – Process of combustion or burner operation
Patent
1981-03-02
1983-11-22
Favors, Edward G.
Combustion
Process of combustion or burner operation
110238, 137 14, F23K 500
Patent
active
044166095
DESCRIPTION:
BRIEF SUMMARY
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a national phase application corresponding to the international phase application PCT/AT80/00020 filed June 27, 1980 and based upon Austrian application A 4557/79 filed June 29, 1979 under the International Convention.
FIELD OF THE INVENTION
The invention relates to a process and an apparatus for the burning of contaminated waste oils in pressure atomizer burners.
BACKGROUND OF THE INVENTION
Large amounts of contaminated waste oil are generated in industrial and manufacturing operations. These oils can contain solid materials such as metal chips as well as nonlubricating, possibly slightly corrosive chemicals and water. Such waste oils are for example generated in auto repair shops and in machine shops. The collection and disposal of such waste oils involves high costs, since for this purpose few and expensive burning facilities are available and therefor high storage and transport cost are incurred.
In order to save such disposal costs smaller shops try frequently to burn waste oil in their own oil heating units. It has been found in practice that break-down of the oil burner pump or of the pressure controller rapidly occurs. A cause for this can be the solid particles transported in the waste oil as well as the inclusion of nonlubricating media in the stream of oil.
It is not uncommon that waste oils are disposed irresponsibly in the environment in order to save high disposal costs, the result being considerable damage to the environment.
A combustion system constructed solely for waste oils is for example known from Austrian Patent AT-PS 292-900. In the system the waste oil is transported by compressed air into a separator for solid particles and is transported from the separator by partial vacuum to the burner nozzle. The burner nozzle operates in accordance with the injector principle and sucks the waste oil from the separator.
A substantial disadvantage of this proposal is that in addition to the house or shop heating system a separate burner with a boiler or the like is required. Also the conditions of the combustion are unsatisfactory. In addition waste oils with a large water content cannot be combusted, since such an amount of heat is transferred to the oil feed line that the water in the water/oil emulsion evaporates. This interrupts the feed of oil and quenches the flame.
OBJECT OF THE INVENTION
The invention has as its principal object to provide a process and an apparatus for burning to a high degree even considerably contaminated waste oils without large capital expenditure and also in an environmentally sound way.
SUMMARY OF THE INVENTION
The process according to the present invention is capable of lowering in the long run, heating costs by using the caloric values of waste oils, in spite of the additional cost of apparatus for carrying out the process of the invention.
The process for burning waste oils according to the invention comprises transferring waste oil with underpressure from a collector vessel into a pressure tank and transporting the waste oil from the pressure tank by gas pressure to the pressure atomizing nozzle, there atomizing the oil and burning it.
These steps assure that the oil supply is independent of the composition or the contamination of the oil.
In order to provide continuous combustion, it is advantageous to transport the waste oil by gas pressure from the pressure tank into an intermediate container and from the intermediate container continuously to the pressure atomizing nozzle. When the oil falls below a preset level in the pressure tank the connection between the pressure tank and the intermediate container is interrupted and waste oil is transported from the collector vessel to the pressure tank by way of gas underpressure.
In a preferred embodiment a pressure tank is connected via pipe lines to the collector vessel, to the suction side of an air pump and to a source of compressed air, and the pressure tank is connected to the pressure atomizing nozzle, the waste oil being transported b
REFERENCES:
patent: 2000354 (1935-05-01), Sherman
patent: 4008038 (1977-02-01), Berthiaume
Dubno Herbert
Favors Edward G.
Ross Karl F.
The Firm of Jorg Santer
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