CN2381374Y - Internal smoke-eliminating and dust-collecting device for coal boiler - Google Patents

Abstract

The utility model relates to an internal smoke-eliminating and dust-collecting device for a coal-fired boiler, which is composed of a smoke inlet, a spiral casing-shaped cyclone separator, a spiral casing-shaped dust discharging port, an inner cylinder, a cone-shaped dust collecting box, a dust discharging port and a smoke outlet, wherein, the lower part of the spiral casing-shaped cyclone separator is provided with the spiral casing-shaped dust discharging port, the lower edge of which is provided with the cone-shaped dust collecting box, the lower part of which is provided with the dust discharging port capable of connecting with a slag remover of a boiler; dust is smoothly discharged into the slag remover of the boiler, and water in the slag remover also has a water sealing action for the dust discharging port.

Description

Device for eliminating smoke and dust in a kind of coal-burning boiler stove

The utility model relates to a kind of interior smoke elimination devision device of stove of coal-burning boiler, particularly relates to whirlwind device for eliminating smoke and dust in a kind of stove.

For the original dust exhausting concentration that reduces coal-burning boiler and the lingemann blackness of flue gas, the boiler producer that has has taked smoke abatement and dust control measure in some stoves in boiler design.The producer that particularly has has adopted whirlwind burning chamber structure in the stove, but this structure can not in time handle and discharge isolated dust particle, and the flue gas that is rotated has at a high speed dashed and takes away.

Task of the present utility model is to propose a kind ofly to promote the flammable composition in the flue gas fully to burn, and the dust particle in the flue gas can be separated again and can be in time with device for eliminating smoke and dust and manufacture method thereof in a kind of stove of dust discharge.

The method that solves the utility model task is: be used for the interior device for eliminating smoke and dust of boiler stove and comprise smoke inlet, volute cyclone separator, spiral case dust-exhausting port, inner cylinder, exhanst gas outlet, taper disposal box, dust-exhausting port composition.Tangentially enter the high-temperature flue gas of scroll casing shape cyclone separator by smoke inlet, under the centrifugal action that in rotatablely moving, is produced with the red-hot separate particles in the flue gas to spiral case barrel place, fall into the taper disposal box along the particle of barrel rotational slide during to the spiral case dust-exhausting port, and the flue gas that forms annular airflow enters the convection heating surface of boiler from exhanst gas outlet through the inner cylinder axially-movable.High-temperature flue gas is in rotatablely moving between the particle, can produce collision and friction between particle and the wall, make the outer grey shell fragmentation of particle, combustible component further burns, the promoted gaseous combustible composition of the flue gas that rotation is simultaneously stirred burns, thereby has reduced the excess air coefficient of gas and heat loss of imperfect solid combustion and burner hearth.Press the utility model, also should comprise a tube connector that connects taper disposal box bottom dust-exhausting port and boiler slag remover, the grit in the disposal box could be discharged like this, the water in the slag remover can play the effect of sealing again to this device.

The utility model is compared with rotating separation device in other stove, it not only has the function that promotes burning, main is that it can be collected isolated dust in the taper disposal box, and dust can be drained in the slag remover of boiler continuously, dust and slag are together got rid of by boiler slag remover wet method, therefore dust can not cause secondary pollution to boiler room and coal cinder yard, has improved near the environmental sanitation in the boiler room and boiler room.Owing to reduced the dustiness in the boiler smoke, reduced the wearing and tearing of flue gas, thereby can further improve the flow velocity of flue gas boiler heating surface, improve boiler thermal output, the service life of prolonged boiler.

The utility model will be illustrated in conjunction with the accompanying drawings by embodiment, wherein:

Fig. 1 is the main cutaway view of device for eliminating smoke and dust in the stove;

Fig. 2 is the A-A cutaway view that Fig. 1 is;

With reference to accompanying drawing, will be described in detail specific embodiments of the present utility model.

In Fig. 1, this device is arranged in the upper back of boiler rear arch (1) near wall behind the boiler, the high-temperature flue gas of boiler tangentially enters scroll casing shape cyclone separator (3) by smoke inlet (2), the centrifugal force that is produced in high speed rotary motion will be that the red-hot particle that floats in the eddy flow flue gas is thrown to spiral case barrel place, when rotatablely moving along barrel, particle also carries out axially-movable, when particle rotatablely moves to spiral case dust-exhausting port (4), fall into taper disposal box (5), and the annular airflow flue gas that forms enters boiler convection heating surface from exhanst gas outlet (7) through inner cylinder (6) to pumping is moving.The grit that falls into the taper disposal box is entered the slag remover (10) of boiler by dedusting tube connector (9) by dust-exhausting port (8), together dust is got rid of during the boiler slagging-off, the top spiral case cyclone separator (3) and the inner cylinder (6) of this device are that refractory material is made, and the bottom disposal box is that steel plate is made.

In Fig. 2, smoke inlet (2) is rectangular and tangentially enters scroll casing separator (3), and spiral case cyclone separator (3) is to begin in the porch to expand in the shape of a spiral with inner cylinder (6) along flue gas axially-movable direction to join.

Claims (3)

1, a kind of have a boiler rear arch (1), smoke inlet (2), scroll casing shape cyclone separator (3), spiral case dust-exhausting port (4), inner cylinder (6), taper disposal box (5), exhanst gas outlet (7), dust-exhausting port (8), dedusting tube connector (9), device for eliminating smoke and dust in the coal-burning boiler stove of boiler slag remover (10), its feature is arranged a scroll casing shape cyclone separator (3) in the upper back of boiler rear arch (1), upper lateral part at separator (3) has a smoke inlet (2), in the bottom of separator (3) a strip spiral case dust-exhausting port (4) being arranged, is taper disposal box (5) under the dust-exhausting port (4).

2, according to device for eliminating smoke and dust in the coal-burning boiler stove of claim 1, it is characterized in that a strip spiral case dust-exhausting port (4) is arranged at spiral case rotary separator (3) bottom, can will separate along the grit that barrel rotatablely moves, the scroll casing shape cyclone separator is made with refractory material.

3, according to device for eliminating smoke and dust in the coal-burning boiler stove of claim 1, it is characterized in that a taper disposal box (5) is arranged under the spiral case dust-exhausting port (4), be used to collect the grit of its discharge, flat taper casing is made with steel plate, at lower box a dust-exhausting port (8) is arranged, by dedusting tube connector (9) dust is entered the boiler slagging-off and want in (10).

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