RU2336464C1 - Plant for combustion gas and vented air flow removal to atmosphere - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to heat engineering and particularly to steam removal facilities in steam generating units and ventilation of industrial areas. Plant for combustion gas and vented air removal to atmosphere contains smoke stack. New design of plant is specific by under-pipe area intended for intensification of combustion gas removal and room ventilation. Under-pipe area is represented as circular loop. Tangentially positioned intakes for combustion gas from unit and vented air from rooms are inserted into the loop.

EFFECT: improved effectiveness of combustion gas removal from steam generating units and ventilation of rooms due to intensification of ejection process and swirling draw of combustion gas and vented air flows.

2 dwg

Description

The invention relates to a system for removing flue gases from heat engines and ventilation, in particular to devices for removing smoke from boiler units and ventilation of industrial premises.

A device for removing smoke containing a chimney and installed in it with a gap ejector with a mixing chamber [SU 577357 A, 1977].

The disadvantage of this device is the need for strict alignment of the ejector along the axis of the chimney.

A chimney is known, which contains a barrel with an injection duct introduced into it from the outside and directed towards the exit of the flue gases, and the trunk of the pipe behind the nozzle has the shape of a confuser, which can end with a mixing chamber or diffuser, and a mixing chamber can be located between the confuser and diffuser [RU 2124163 C1, 12/27/1998, F23L 17/16].

The disadvantage of the chimney is the low productivity of removing harmful gases from the room.

A device for removing flue and / or industrial gases into the atmosphere, containing an air blower, the outlet of which is connected to the bottom of a vertical pipe, in the trunk of which is installed at least two ejectors spaced along its height, while the suction inlet is at least at least one ejector through a gas pipeline is connected with a device for taking off exhaust gases, while the supercharger can be made in the form of a high-pressure centrifugal fan, between the suction inlet of the ejector and the gas pipeline it can be installed n the expander, the suction inlet of each ejector can be made along the perimeter of the cross section of the pipe barrel, the suction inlet of the ejector can be connected with the atmosphere, in addition, a dust collector is installed between the suction inlet of at least one ejector and the corresponding gas pipeline [RU 2203453 C2, 27.04 .2003, F23L 17/00].

A disadvantage of the known device is the high energy intensity and lack of smoke removal efficiency.

The known device for outputting into the atmosphere of flue gases and ventilation air flows, selected as a prototype, contains a chimney with a nozzle section having an axisymmetric channel and an exit window, a ventilation duct with a pipe equipped with an exit window, a mixing chamber with an axisymmetric channel output into the atmosphere a window and an inlet window connected to the outlet windows of the ventilation pipe and the nozzle section of the pipe, the nozzle section being integrated into the ventilation pipe to form rings air duct for the passage of ventilation air, and the channels of the mixing chamber, ventilation pipe and nozzle section of the pipe have a common axis of symmetry [RU 2213906 C1, 10.10.2003, F23C 1/12].

The disadvantage of this device is the lack of efficiency of the removal of flue gas and exhaust ventilation flows.

The objective of the invention is to increase the efficiency of flue gas removal from boiler units and ventilation of the room by enhancing ejection and vortex drawing of flue gas streams using natural and forced smoke removal.

This task is achieved in that the device for removing flue gases into the atmosphere and ventilation air flows containing a chimney, according to the invention, is equipped with an annular room in the form of an annular contour with one or more hogs tangentially located.

The proposed design of a device for the removal of flue gases into the atmosphere and ventilation air flows with the annular room provides an intensive extraction of flue gas from boiler units or ventilation air from the room by vortex drawing the gas flow through the annular room when they enter the burs located tangentially to the annular circuit, while ejection of flue gases or ventilation air flows is organized.

Comparative analysis with the prototype shows that the claimed technical solution is characterized by the presence of an annular room in the form of an annular contour with tangentially located hogs.

Schemes of the inventive device for the removal of flue gases into the atmosphere and ventilation air flows are shown in the drawings.

A device for removing flue gases into the atmosphere, for example, from boiler units, consists of a pipe 1, an annulus 2 and hogs 3 (Fig. 1).

A device for removing ventilation air flows from the premises consists of a pipe 1, an annular room 2, ducts 3 and a cone-shaped adapter 4 (Fig. 2).

The operation of the devices is as follows.

Flue gas, for example, from the boiler, with the open window 4 through the burs 3 due to natural traction is drawn into the pipe room 2 (Fig. 1). In the annular room 2, the flue gas jets entering the burs 3 create an ejection effect, creating a vacuum near the exit of the annular room 2 and an additional pressure difference between the outlet window of the pipe 1 of the gas mixture into the atmosphere and the windows of the hogs 3 of the flue gas flow intake. The flow of ejected gas, rotating around the vertical axis of the chimney 1, is removed from the unit. To enhance the effect of the removal of flue gases from boiler units, it is possible to install a pump for sucking gas from one boiler unit into the pipe room along one of the hogs, while the gas flow coming through it helps to enhance the ejection effect in the pipe room.

Ventilation air from each floor of the room through the windows 5 through the boxes 3 due to natural draft enters the annular room 2 (figure 2). In the future, the process occurs similarly to that described in the first embodiment.

The proposed design of the device with an annular room helps to improve the draft of the chimney by ejecting and swirling the flue gas and the flow of ventilation air. Moreover, a radial differential pressure is provided on the inner wall of the annular room, which contributes to intensive vortex absorption of the gas and ventilation air mixture into the pipe and the conditions necessary for the effective removal of flue gas and ventilation of the room are created.

Claims (1)

A device for removing flue gases into the atmosphere and ventilation air flows, comprising a chimney, characterized in that the device is equipped with an annular room in the form of an annular contour with one or more hogs tangentially located.

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