SU1375907A1 - Arrangement for removing flue gases to atmosphere - Google Patents

Abstract

The invention can be used in devices for burning fuel and is intended to protect the environment from pollution by harmful emissions. The purpose of the invention is to reduce the surface concentration of harmful substances. The device contains rotating outer and central nozzles 1 and 4 equipped with a drive, which have 2.5 spiral-like grooves and 3.6 blades on the inner surface. The internal nozzle is connected to the external one via a reducer 13. The flow part between nozzles 1 and 4 is made diffusive in the direction of the gases exit. The device may contain at least one intermediate nozzle 17 ,. located coaxially between the nozzles 1 and 4, and the solution angles of the intermediate nozzles monotonously decrease with distance from the central conical nozzle. 1 hp f-ly 2 ill. with

Description

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The invention relates to devices for emitting smoke gases and is intended to protect the environment from contamination by harmful emissions.

The purpose of the invention is to reduce the surface concentration of harmful substances.

FIG. 1 shows schematically the proposed device in FIG. 2 - multi-device.

The device for removing flue gases into the atmosphere contains a rotating outer nozzle 1, having spiral-shaped channels 2 on its inner surface, between the turns of which blades 3 may be located, nozzle 1 inclined to the axis, rotating central conical nozzles 4, on the inner surface of which there are spiral-shaped the grooves 5 between the turns of which the blades 6 can be installed, inclined to the axis of the nozzle at a different angle than the blades 3, both nozzles are supported on bearings 7 and 8, mounted on bases 9 and 10 corresponding wow. The chimney 1t ends with a diffuser 12, which makes it possible to evenly distribute the flow of flue gases into the nozzles 1 and 4. The latter are connected to each other by a gearbox 13. The electric motor 14 through a transmission mechanism 15 having a clutch with a cylindrical nozzle 1 by means of a gearbox 13 allows both nozzles to rotate with different angular velocities. I

The device works as follows.

With a continuous supply of flue gases through the chimney 11 and the diffuser 12, the chamber 16 is evenly filled with flue gases that fall into the lower parts of the internal cavities of the nozzles 1 and 4, rotating at different angular velocities. The spiral grooves 2 and 5, as well as the blades 3 and 6 of the rotating nozzles 1 and 4, respectively, create a rotational-translational movement with a pronounced vertical velocity component in the flue gas stream. At the same time, the internal cone-shaped nozzles 4 due to the specific arrangement of the blades 6 and the spiral-shaped grooves 5, as well as the difference in angular velocities of the nozzles 1 and 4 give a stronger twist to the smoke

gases inside the nozzle 4, which leads to an increase in the vacuum in the center of the vortex emerging from the device, which increases its stability. Rotating nozzles 1 and 4 increase the thrust of the device by creating a vacuum on the cut of the pipe. Installing two rotating nozzles makes it possible to effectively unwind a large volume of flue gases and create a steady swirling flow of flue gases above the device, raising them to a considerable height. 5 The stability of such a vortex is defined as the creation of a vacuum at its center, caused by a large twist of the flue gases in the cone-shaped nozzle 9 and a nozzle shape 4 of the nozzle 4 itself, which creates a negative pressure when the flue gases expire. and the presence of an overpressure zone at the periphery of the vortex caused by the rotation of the flue gases, and consequently, by the action of centrifugal inertia forces directed from the center of the vortexes: p during the movement of swirling flows from the nozzles T and 4, as well as by the presence of a natural diffuser, - An annular channel between nozzles 1 and 4, which creates increased pressure when flue gases are flowing out of it. The increased stability of this allows the flue gases to rise to greater heights with less likelihood of dispersion by atmospheric currents at the surface of the earth.

It is possible to create a multi-unit device (Fig. 2) containing in the central part a rotating nozzle with an internal nozzle channel. Between the central and outer nozzles on the cut of the pipe there is a set of rotating nozzles 17 mounted coaxially with the central so that the device provides a monotonous change in the shape of the flow path between the nozzles from confusing in the central nozzle to the diffuser

in the peripheral channels.

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The technical and economic efficiency of the device is caused by a decrease in the height of the pipe, which gives 5 the effect of saving material and money when increasing the height of the pipe for every 10 m the cost of its construction increases 4 times), and a decrease in the surface concentration5

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harmful substances due to increased emission height.

Claims (2)

1. A device for removal of flue gases into the atmosphere, containing a pipe with a nozzle placed on its section, mounted on bearings rotatably from a drive and having spiral-shaped chutes and blades on the inner-top surface, in order to reduce surface concentration of harmful substances, it is equipped with a coaxially established on bearings inside the nozzle, a conical nozzle, tapering upwards, with helical grooves and loops; m on the inner surface connected to the outer nozzle by means of a reducer, the flow part between the nozzles made diffuser in the direction of the gas outlet; 2. A device according to claim 1, characterized in that it is provided with at least one intermediate nozzle located between the external and internal nozzles, the solution angles of the intermediate nozzles monotonously decreasing as they move away from the central nozzle.