The cleaning device chimney

 

(57) Abstract:

The device is used in the energy sector, in particular in the flue pipe industrial energy technology installations and structures, as well as in all sectors of the economy to remove different amounts of air, General ventilation, contain harmful impurities. The cleaning device of the chimney contains a flue 1, a cone-shaped nozzles 2, covering the side surface of the chimney 1, the output section, a curved plane with 3 guides and twisting ribs 4, a spiral groove 5 located on the inner surface of the conical nozzle 2, a cone-shaped perforated 6 and the annular gratispornos 7 located on the outer side of the lower base of the conical nozzle 2. 2 Il.

The invention relates to energy, in particular to flues industrial energy technology installations and structures, and can be used in all sectors of the economy to remove different amounts of air, General ventilation, contain harmful impurities.

Known annular nozzle chimney (ed. St. N 387189, CL F 23 J 17/00, 1973, BI N 27), containing ve is the end of the pipe with a gap and a conical support ring.

The disadvantage is the low thrust due to the blowing side wind.

Known ejecting device chimney, mainly for locomotives (ed. St. N 956917, CL F 23 J 17/00, F 23 J 11/00, 1982, BI N 33), containing cone-shaped nozzles covering the chimney with the formation of confused chamber in which is located a curved plane and the guide ribs.

The disadvantage is the impossibility of flue gases from solid and vapor-gas condensing pollution emitted into the environment.

The objective of the invention to improve the environmental situation in the work area CHP, boiler and other proseguire expelling the products of combustion into the environment through stacks of different heights by separation from flue gases solid particles of unburned fuel, products of combustion, liquid particles of condensed vapor-gas mixture.

The task is solved in that the flue pipe is provided with a conical nozzle, covering her side surface of the output section, Grassmannian in the form of an annular groove, a conical perforated spiral grooves placed on the inner surface CONSOB is put on the outer side of the conical nozzle. As of the release of sarasani from a flue gas stream, under the action of wind, swirling curved planes and guides, twists and solid particles with droplets of condensed liquid by centrifugal forces to move towards the inner surface of the conical nozzle and fall into the spiral grooves in which, coagulase with liquid droplets and wcreplays, roll into a cone-shaped perforated and later in the annular gratispornos. In the result, prevents the emission of pollutants in the form of solid particles and condensed droplets of liquid, which ensures the maintenance of satisfactory environmental conditions in the area of industrial enterprises and the ambient atmosphere.

In Fig. 1 shows a cleaning device of the chimney of Fig. 2 - section a-a in Fig. 1.

The cleaning device of the chimney contains a flue 1, a cone-shaped nozzles 2, covering the side surface of the chimney 1, the output section, a curved plane with 3 guides and twisting ribs 4, a spiral groove 5 located on the inner surface of the conical nozzle 2, a cone-shaped perforated 6 and

The cleaning device chimney works as follows.

The air flow surrounding the chimney, around the annular sludge trap 7, which surrounds the curved upper and lower curved plane 3, as well as guides and twisting of the ribs 4, twists, creating ejection effect by increasing the air velocity in the channel between the curved surface 3 and the outer surface of the chimney 1. Swirling flow of atmospheric air (wind thrust) contacting the gas stream emitted from a chimney, twists it, partially cooling. In the centrifugal forces acting on the solid particles of pollution in the stream of smoke they are discarded to the inner surface of the conical nozzle 2 and, falling into the spiral grooves 5, calming down there, they collide with other particles, escalated and roll into a cone-shaped perforated 6.

The relative positions of the sludge trap 6 relative to the curved planes 3 is designed so that its portion in contact with the spiral grooves 5, is higher as compared with the curved surfaces 3 and the guide ribs 4, and in relation to the output secene spiral grooves 5, i.e. there is no effect of swirling flow on particle pollution, setiausaha of the spiral grooves 5 in a cone-shaped perforated 6.

The ratio between the smaller and larger combinations of cone-shaped nozzle 2 is in the range from 1:2 to 1:2,5, which is determined (at a known velocity wind pressure determined average annual cold and warm period of weather-climatic zones of operation of industrial enterprises (for example, thermal power plants, boiler houses) the density change of the air flow when driving on curved surfaces, rails and twisting the ribs 4 and is, for example, from the expression

,

where

mandb- air density wind flow at the exit of the smaller and log in to a greater combination of cone-shaped nozzle, kg/m3;

D and d are the diameters of the larger and smaller sections of a conical nozzle, m;

w is the speed of the smoke stream before the output section of the chimney, m/s;

- kinematic viscosity of the smoke stream, which is rich in solid particles of dirt and the condensed liquid, m2;

k - coefficient of proportionality;

Re is the Reynolds criterion.

Owls is ku, stimulating the process of cooling the flue gases by condensation of moisture vapour. Fine condensed moisture and solid particles is shifted to the periphery of a rotating cone-shaped nozzle 2, the blending of the flow of flue gas and air, a twist on curved surfaces 3, coarsens, and dust particles intensify the process of enlargement and condensation of moisture as is "condensation nuclei" (Bergland M. E. and others Fogs. - M.: Gidrometeoizdat, 1961).

Thrown to the inner surface of the conical nozzle 2 drip moisture partially enlarged enters the spiral groove 5. The result is a more "vague" cooling of flue gases and better cleaning up of pollution.

The advantage of the invention is that the device allows for more energy to carry out cleaning of the flue gases directed into the atmosphere from fuel combustion in CHP, boiler installations and other facilities producing contaminated gases into the environment, the process flow is carried by wind energy.

The original design exploitational, and technological reliability of the process of separation of contaminants from the flue gas.

The cleaning device chimney containing cone-shaped nozzle, a curved plane with the guide ribs, characterized in that it is provided with a cone-shaped perforated spiral grooves placed on the inner surface of the conical nozzle from the outlet cross section of it to the sludge trap connected to the bottom part with Grassmannian made in the form of an annular groove located on the outer side of the conical nozzle.

 

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