Incinerator burner

FIELD: burning separated oil-containing wastes formed during operation of ships.

SUBSTANCE: proposed incinerator burner includes several injectors for delivery of oil and diesel fuel wastes sprayed by air. Air injector equipped with swirler is located in front of oil and diesel fuel waste injectors; oil waste injector is located closer and distance of both fuel injectors may be changed relative to air injector whose axis lies at right angle relative to axes of fuel injectors; mounted in front of fuel injectors are jets whose orifices have diameter lesser than that of injectors.

EFFECT: enhanced efficiency of burning fuel; reduction of toxic emissions from reactor.

3 dwg

 

Usage: in shipbuilding, in particular for burners shipboard incinerators designed for thermal disposal of oily bilge water oily wastes), preliminary separation.

The invention consists in that the burner of the incinerator contains three nozzles intended for supplying diesel fuel, oily wastes and air, spray two types of these fuels. Nozzle with oily wastes is closer than the injector of diesel fuel to the air nozzle and the air nozzle with respect to the fuel injector is located at a right angle. The air nozzle is equipped with a swirl whirling stream of air at the outlet, and the fuel injector, the fuel flows through the nozzles, the diameter of which is smaller than the diameter of the nozzle outlet of the fuel. The nozzles are located in the upper part of the burner.

The invention relates to shipbuilding, in particular to the burning device of incinerators for the disposal of oily wastes.

Known burners with pneumatic nozzles [1] and nozzles for atomization of the fuel slurry [2], which is a prototype of the claimed technical solution. In these fuel injectors channels are located in the channels of the spray gas.

Given the characteristics of the burners of the boiler, consisting of low qualities is oily wastes and the need to have at least two nozzles: on ignition of diesel fuel and recycling with oily wastes. The disadvantages of these nozzles are:

- increased air flow to the spray of fuel (air to spray diesel fuel and air to the spray of oily wastes);

- the complexity of the design of the injector and system that changes the air pressure to the injector of diesel fuel and oil waste. This is because the viscosity of diesel fuel and oily wastes are different, and therefore the air pressure on the spray in one environment should be different;

the absence of swirl, twisting stream of air with the sprayed fuel;

- no nozzles to reduce fuel pressure at the exit of the nozzle and thereby leading to the need to increase the air pressure on the spray and as a consequence increase air flow.

These drawbacks are eliminated by the burner of the incinerator, comprising several nozzles for supplying oil waste and diesel fuel, raspisivaem air. According to the invention, the air nozzle is equipped with a swirl and located in front of the nozzles of oily waste and diesel fuel, and jet of oily wastes is closer and both injectors have the ability to change the distance relative to the air, which axis to the axis of the fuel to the nozzle inlet is OK is at a right angle, and before the fuel injectors installed nozzles, orifice diameter smaller than the diameter of the openings of the respective nozzles.

The fuel injector in the upper part equipped with removable linings. Novelty and positive effect in the burner of the incinerator is the presence of jets, the number and arrangement of nozzles, the possibility of changing the distance between the fuel injector and air. This allows you to extend the range of characteristics of the waste oil waste and to obtain improved performance of the burner.

Figure 1 shows a General view of the burner of the incinerator; sections section a-a section B-B.

The burner of the incinerator, figure 1, consists of buildings with nozzles oily wastes 1, diesel 2, air 3, lance 4, the nozzle on the lance 5. In the upper part of the burner is located swirl air 6 and housing with fittings for connection to the pipeline 7 - fitting oily wastes, 8 - fitting air, 9 - fitting diesel fuel. Details POS.1-3 and 7-9 is fixed on the base 10, which is in turn mounted on the hinged cover 11. In the base 10 through insulators installed electrodes 12 connected with a high voltage transformer (high-voltage wires and transformer not shown). Under the fittings buildings with diesel fuel injectors, netea the moves are lining 13 and 14, and in the fittings installed the nozzles 15 (cross section a-a). Before the air nozzle installed swirl 16 (section b-B).

Operation of the burner of the incinerator is as follows. In the beginning of being up-regulation works, which consist in the selection of the diameter of the nozzle POS. 5 on the lance. The diameter of the nozzle supply the necessary quantity of air for combustion torch. Then adjusts the distance between the nozzle diesel fuel 2 and the air nozzle 3 by selecting the thickness of the lining 13, and the distance between the nozzle 1 and nozzle air 3 by selecting the thickness of the lining 14 (section a-a). Shown in figure 1, the burner of the incinerator provides thermal disposed in the cavity of the reactor oily wastes and (or) solid combustible waste. Given these modes of operation of the incinerator, the burner must also be able to control the amount of supply of fuels. For example, in the burning mode only oily wastes fuel injector burner should be characterized by the following parameters: nozzle supply of diesel fuel shall be capable of delivering a minimum amount of fuel that is only for the ignition of oily waste, and oily wastes in this mode should be the maximum. This is achieved through the installation of the nozzles 15 in the fittings 9 dieseling the fuel consumption of oily wastes and 7 and is provided by the minimum bore diameter in the jet diesel fuel and the maximum reduced diameter in the jet of oily wastes. In the burning mode only solid waste (no oily wastes) only works injector of diesel fuel. To ensure the required temperature inside the reactor for the combustion of solid waste in the fitting 9 supply of diesel fuel jet set 15, characterized by large reduced diameter in comparison with the previous mode of operation. The larger diameter of the nozzle provides a large flow of diesel fuel to create a high-temperature regime inside the reactor. In the mode of disposing of at the same time solid waste, oil waste, diesel nozzle is used only for ignition of oily wastes, so fitting 9 supply of diesel fuel jet set 15 with a minimum throat diameter. In the fitting 7 filing oily wastes jet set 15 with nominal or maximum bushing diameters, which are selected on the basis of the temperature in the reactor or the amount of oily wastes that must be disposed.

The workflow of the burner of the incinerator is organized in the following sequence. A centrifugal fan (not shown) in the cavity formed by the casing and reactor incinerator, pumped the air passing through the swirler 6, twists and flows through the lance 4 and the nozzle 5 into the internal cavity of the reactor. Served compressed the second air nozzle 8, 1, which, after passing through the body, enters the swirler 16 (section b-B) and, twisting, comes out of the air nozzle 3. The electrodes 12, figure 1, is supplied high voltage that produces a spark between the ends of the electrodes. Through the nozzle 9 is supplied diesel fuel, which passes through the nozzle 15, is released from the nozzle 2, rasplivaetsa air emerging from the nozzle 3, and is ignited by the spark between the electrodes 12. A good spray of diesel fuel is ensured by proper adjustment of the distance between the aircraft and the individual nozzles, the axes of these nozzles in the region of 90 degrees, the spin of the air leaving the nozzle 3, and a low flow rate of diesel fuel from the nozzle 2 due to the smaller diameter of the nozzle 15 in comparison with the output nozzle diameter of the nozzle 2. The lowering speed of the diesel fuel from the nozzle requires spraying a lower air pressure, and hence less consumption of compressed air, which improves the performance of the burner and the entire incinerator in General. The presence of the pilot flame 15 (cross section a-a) is characterized by a positive performance effect, which is that there is no need to clean the nozzles in the burner the most likely location of the blockage is the penetration hole of the nozzle. Given its location, there is no need the open burners, as for purging the nozzle it is necessary to release the fitting 9 and remove the nozzle. After ignition of diesel fuel disconnects high voltage electrode 12 and the spark goes out. Then fed the oily wastes that through the nozzle 7, the nozzle 15 (cross section a-a) out of the nozzle 1, is sprayed by the air leaving the nozzle 3 and is ignited by the torch of diesel fuel. A good dispersion of oily wastes is achieved by the same structural elements, and that for diesel fuel. After ignition of oily wastes supply of diesel fuel stops.

Novelty and positive effect of the proposed burner of the incinerator is available nozzles for supplying diesel fuel, oily wastes and compressed air, in the arrangement of the nozzles relative to each other, in the presence and arrangement of the nozzles in the fuel injectors and changing distances of the fuel injector relative to the air. This permits the setting of optimum modes of operation of the burner at different parameters utilized oily wastes, easier maintenance of the burner is reduced compressed air consumption and improves the dispersion fuels, which entails the combustion efficiency and reduction of harmful emissions from the reactor. Constant blowing cold air the fuel injectors eliminates the possibility of the activity coking of their outlets.

The proposed solution is implemented in the "ship waste incinerator" (ACCELERATION), produced by FSUE CRIST" by request of Department of Navy shipbuilding.

Sources of information

1. Kulagin L.V., Hunter S. the Combustion of heavy liquid fuels. M: "Nedra", 1967, s-216.

2. A.S. No. 5307996 class. F 23 D 21/00 "Nozzle for atomization of the fuel suspension".

The burner of the incinerator, comprising several nozzles for supplying oil waste and diesel fuel, raspisivaem air, wherein the air nozzle with swirl is in front of the nozzles of oily waste and diesel fuel, and jet of oily wastes is closer, and both injectors have the ability to change the distance relative to the air, which axis to the axis of the fuel injector is located at a right angle, and in front of the fuel injectors installed nozzles, orifice diameter smaller than the diameter of the openings of the respective nozzles.



 

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Ejection burner // 2262040

FIELD: fuel burning devices.

SUBSTANCE: proposed ejection burner has body with branch pipes for delivery of combustion components, stabilizer, purging ports and injector additionally provided with mixing ejector consisting of body, contraction passage, fuel and oxidizer supply pipe unions; its construction makes it possible to regulate sectional areas of ejecting and ejected flows due to change of penetration of oxidized supply pipe union into contraction passage of ejector. Widening of flow of fuel-and-gas mixture in injector is made in two sections at different taper angles; diameter of spherical cover exceeds diameter of flow section of injector. Purging ports are made in form of three-stage system; first-stage purging ports are made in form of holes in burner body; second-stage purging ports are made in form of row of holes in combustion chamber; their flow sections change by means of regulating ring moved over surface of combustion chamber; third-stage purging port is made in form of coaxial circular passage copying the combustion chamber geometry. Stabilizer tube is twisted in form of cylindrical spiral. Proposed burner makes it possible to improve quality of mixing and evaporability of fuel in injector and to obtain complete combustion of fuel at extended range of stable operation by excess air coefficient.

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FIELD: methods of burning hydrocarbon fuel.

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5 cl, 1 dwg

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2 cl, 1 dwg

FIELD: combustion apparatus for fluent fuels.

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FIELD: methods for burning of solid fuel.

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FIELD: methods for burning of solid fuel.

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1 dwg

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