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

 

(57) Abstract:

Usage: in industrial ecology. The inventive device includes a reservoir supply of air, fuel gas and waste gases with the means of allocation of air, fuel gas and waste gases with means of isolation and atomization of the condensate in the combustion zone, and at least one rod is made with the surface of the material with a continuous spectrum of radiation, which is provided with the heat-conducting elements on the fuel manifold so that it passes through the core of the torch. The device provides for reducing or eliminating the formation of nitrogen oxides when burning ignition gas emissions with a high content of condensate. 1 Il.

The invention relates to industrial ecology and can be used when the fiery destruction of gaseous wastes containing condensate.

A device for thermal afterburning of 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 swirl by waste catapaulted winding 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 N 2033578, CL F 23 G 7/06, 1995).

A disadvantage of this device is to create conditions for the formation of nitrogen oxides in the process of afterburning waste gases.

The technical result of the invention is to reduce the formation of oxides of nitrogen.

This result is achieved in that the device for thermal afterburning of 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, according to the invention is equipped with at least the military thermally conductive elements on the fuel manifold so he passes through the zone of location of the nucleus of the torch.

This allows you to reduce or eliminate the formation of oxides of nitrogen in combustion gas emissions.

The drawing shows a diagram of the device.

Device for thermal afterburning waste gases with a high content of condensate includes a housing 1 with the fitting 2 to supply air, swirl 3 air fuel reservoir 4 with the inlet fitting 5 and the gas 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 pipe 7 connected to the source of the ultrasound performed, for example, in the form of a piezoelectric transducer 13 is connected to the source 14 of high-frequency alternating current. The fitting 8 is placed on the line of zero displacement of the pipe 7. To the fuel reservoir 4 through the heat-conducting elements 15 attached to one or more of the rods 16, PR> 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 gas is fed into the reservoir 4 through the nozzle 5 and further through the gas holes 6 in the combustion volume. Waste gases containing condensate, through the fitting 8 is served in the Central pipe 7, where it spin 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 extend out of the socket 7. By creating in a piezoelectric transducer 13 by passing current from the source 14 of ultrasonic vibrations and their transmission to the Central pipe 7 is 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 root, which provides intensive evaporation of condensate and ignition together with the waste gases. The location of the fitting 8 on the line of zero offsets shaken with ultrasonic frequency pipe 7 minimizes the dissipative loss of energy of ultrasonic oscillations and reduces energomashof in it 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 16, 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 16 in a continuous spectrum eliminates heating of the fuel combustion products and achievement in the core of the torch to a temperature sufficient for oxidation of nitrogen with oxygen. Convective heat rod 16 is passed through the fixing elements 15 to the collector 4, washed with opposite surfaces of the streams of air and fuel gas heating which allows to improve the conditions of the burning torch.

If the device has multiple cores 16 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 16 of the convective heat is the most effective, in particular the heat transfer from the core torch with this arrangement, the rods 16 by 20-25% higher than when they koridoram location.

Supply device terminals is I to what provides the most uniform temperature field in the core of the flame and prevents the formation of zones of its local overheating, the temperature of which may be sufficient for the formation of environmentally harmful nitrogen oxides.

Thus, the proposed device allows you to reduce or eliminate the formation of nitrogen oxides when burning ignition gas emissions with a high content of condensate.

Device for thermal afterburning of waste gases with a high content of condensate, comprising a housing with a fitting 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 at least one rod, the surface is made of a material with mareridt through the zone location of the nucleus of the torch.

 

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