Device for thermal afterburning waste gases with a high content of condensate

 

(57) Abstract:

Device for thermal afterburning waste gases refers to industrial ecology and can be used when the fiery destruction of gaseous wastes containing condensate. The device includes a housing with a fitting for air supply, the swirl of air, fuel reservoir with the inlet fitting and the gas holes, the Central pipe with the inlet fitting and the swirl of waste gases, followed by an inner surface of the pipe is cut a spiral groove, a cutting direction which coincides with the direction of winding of the swirl waste gases, on the inner surface of which is planted nozzle for a gas stream, separating the peripheral channels for the liquid phase. To the Central nozzle attached the source of the ultrasound performed, for example, in the form of a piezoelectric transducer connected to a source of high frequency alternating current, and a source of high voltage direct current of one phase, the second phase of which is grounded. To the fuel reservoir through the heat-conducting elements may be attached one or more rods, the surface of which is made of mater the C zone of the location of the nucleus of the torch. The technical result is to increase the reliability of after-burning of condensate. 1 C.p. f-crystals, 1 Il.

The invention relates to industrial ecology and can be used during plasma destruction of gaseous wastes containing condensate.

A device for thermal afterburning waste gases with a high content of condensate, comprising a housing with a bleed air supply, a fuel reservoir with the inlet fitting and the gas holes, the Central pipe with the inlet fitting and the swirl of waste gases, followed by the inner surface of the cut spiral grooves, the cutting direction which coincides with the direction of winding of the swirl on the inner surface of which is planted nozzle for the gas flow and the ultrasound source, connected to the Central pipe, the inlet fitting which is located on the line of its zero displacement (RU, patent 2033578, CL F 23 G 7/06, 1995).

A disadvantage of this device is the low reliability of dissolver condensate.

The technical result of the invention is to improve the reliability of dissolver condensate.

This result is achieved by the fact that the device for thermal Doge is ritel air, the fuel reservoir with the inlet fitting and the gas holes, the Central pipe with the inlet fitting and the swirl of waste gases, followed by the inner surface of the cut spiral grooves, the cutting direction which coincides with the direction of winding of the swirl on the inner surface of which is planted nozzle for the gas flow and the ultrasound source, connected to the Central pipe, the inlet fitting on a line of its zero displacement, according to the invention is equipped with a high voltage source of direct current, one phase connected to the Central pipe.

This improves the reliability of dissolver condensation by increasing dispersion and monodispersity of its spray.

In a preferred embodiment, the device is provided with at least one rod, the surface of which is made from a material with a continuous spectrum of radiation, fixed heat conducting elements on the fuel manifold in such a way that it passes through the zone of location of the nucleus of the torch.

This further reduces the formation of dissolver emissions of oxides of nitrogen.

In the drawing postnum condensate includes a housing 1 with the fitting 2 to supply air, swirl 3 air fuel reservoir 4 with the inlet fitting 5 and getviewsite holes 6, the Central pipe 7 with the inlet fitting 8 and 9 swirl waste gases, followed by an inner surface of the socket 7 cut a spiral groove 10, the cutting direction which coincides with the direction of winding of the swirl 9, on the inner surface of which is planted nozzle 11 to the gas stream, separating the peripheral channels 12 for the liquid phase. To the Central nozzle attached the source of the ultrasound performed, for example, in the form of piezoelectric preobrazovatelya 13 connected to a source 14 of high frequency alternating current, and the source of 15 high-voltage direct current of one phase, the second phase of which is grounded. To the fuel reservoir 4 through the heat-conducting elements 16 may be attached one or more rods 17, the surface of which is made of a material with a continuous spectrum of radiation, for example, made of ceramic, is placed in such a way that they pass through the zone location of the cores of flame.

The device operates as follows.

The air fed into the housing 1 through the nozzle 2 and then through the swirler 3 in the combustion volume. Fuel s, containing condensate, through the fitting 8 is served in the Central pipe 7, are formed in the swirl 9 and separated in the centrifugal field, the fluid in the spiral groove 10, and the gases in the cavity of the nozzle 7 is directed to the outlet pipe 7 into the combustion volume, where the gases through the nozzle 11, and the liquid through the channels 12 is removed from the pipe 7. Due to the supply from the source 15 to the pipe 7 high voltage constant potential and connection in a piezoelectric transducer 13 by passing current from a source of ultrasonic vibrations and their transmission to the Central pipe 7 happen fine atomization of the liquid phase from the end surface of the pipe 7 and its emission in the combustion zone of the flame of the fuel gases beyond its roots. Spraying condensate in the interaction field of ultrasonic oscillations and fields electrostatic forces can double to improve the dispersibility of the dispersion and to reduce the dispersion of the droplet size at least. This provides a more uniform intensive evaporation of condensate and ignition together with the waste gases.

The location of the fitting 8 on the line of zero offsets kolabaeva with ultrasonic frequency pipe 7 minimizes dissipation by as oxidant in the combustion gas of the air causes oxidation of the contained nitrogen with oxygen at a temperature of about 1500-1600oC what happens in the core of the plume due to overlapping bands of radiation, water and carbon dioxide, which is the main products of the combustion of gaseous fuel. Located in the core of the flame rod 17 or set of rods provides both the convective and the radiative heat transfer from the core of the torch. When this energy emission surface of the rod 17 in a continuous spectrum eliminates heating of the products of combustion of the fuel in the core of the torch to a temperature sufficient for oxidation of nitrogen with oxygen. Convective heat rod 17 or set of such rods is transmitted through the retaining elements 16 to the manifold 4, washed with opposite surfaces of the streams of air and fuel gas heating which allows to improve the conditions of the burning torch and extra burner waste gases, respectively. If the device several rods 17 is preferred their chess position perpendicular to the axis of the torch in position as close as possible to vertical. With this arrangement, the rods 17 of the convective heat from the core of the torch is the most effective.

Supply device terminals 17 in the greatest quantity at their minimum diameter is the most settled and completely eliminates the formation of zones of its local overheating, the temperature which may be sufficient for the formation of environmentally harmful nitrogen oxides.

Thus, the proposed device allows to increase the reliability of dissolver condensate, and in the preferred embodiment, to reduce or eliminate the formation of nitrogen oxides when burning ignition gas emissions with a high content of condensate.

1. Device for thermal afterburning waste gases with a high content of condensate, comprising a housing with a bleed air flow, the swirl of air, fuel reservoir with the inlet fitting and the gas holes, the Central pipe with the inlet fitting and the swirl of waste gases, followed by the inner surface of the cut spiral grooves, the cutting direction which coincides with the direction of winding of the swirl on the inner surface of which is planted nozzle for the gas flow and the ultrasound source, connected to the Central pipe, the inlet fitting which is located on the line of its zero displacement, characterized in that it is provided with a high voltage DC source, one phase is connected to the Central pipe.

2. The device according to p. 1, otlichayushiesya radiation spectrum, fixed heat conducting elements on the fuel manifold in such a way that it passes through the zone of location of the nucleus of the torch.

 

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