CN211585814U

CN211585814U - Centrifugal wet type smoke purifier

Info

Publication number: CN211585814U
Application number: CN201922191930.0U
Authority: CN
Inventors: 杜传国
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-29
Anticipated expiration: 2029-12-10

Abstract

The invention relates to the technical field of flue gas treatment, in particular to a centrifugal wet type flue gas purifier. The invention adopts the following technical scheme: the centrifugal wet-type smoke purifier comprises a volute flue, wherein a centrifugal fan is arranged in the volute flue, an opening in the side surface of the volute flue is used as an air inlet, the air inlet is connected with an air inlet flue, a spray pipe is arranged on the inner side of the air inlet flue, an atomizing nozzle is arranged at the top of the spray pipe, and water mist sprayed by the atomizing nozzle covers the cross section of the air inlet flue; the circumferential surface of the volute flue is provided with air outlets, the air outlets are connected with an air outlet flue, and the air outlet flue is provided with a flue gas dehydration device. The centrifugal wet-type smoke purifier captures and absorbs smoke dust in a mode of serially connecting an air fog stage and a water film stage. The gas fog and the water film have high absorption efficiency on the micro-dust particles in the flue gas, can effectively absorb the flue gas, and realize the low emission effect of the industrial flue gas.

Description

Centrifugal wet type smoke purifier

Technical Field

The invention relates to the technical field of flue gas treatment, in particular to a centrifugal wet type flue gas purifier.

Background

In recent years, aiming at the problems that haze weather is getting worse and the content of pollutants such as fine particles in the air is increased, the state increases the supervision and treatment intensity, the operation of conventional flue gas purification facilities achieves great effect to a certain extent, and the environmental problems are partially relieved. However, fine solid particles (heavy metals, radioactive substances, aerosol particles, etc.) in industrial flue gas are not efficiently treated, and various adverse effects are still brought to human health and ecological environment.

Aiming at the flue gas which is high in humidity, high in pollutant content such as fine particles of smoke dust and the like and difficult to treat, the traditional dust remover cannot treat the flue gas. Although the wet electric dust remover can be realized under certain conditions in a certain range, the wet electric dust remover has the advantages of large volume, high investment, low treatment efficiency and high operation energy consumption.

The wet electric dust collector has strict requirements on the initial concentration of inlet smoke dust, the removal rate of pollutants is only about 70% in practical use, the initial concentration of inlet smoke gas cannot exceed 18mg/m3 if the ultra-low emission smoke dust emission amount is 5mg/m, and other measures are needed for the dust-containing smoke gas with high initial concentration.

In summary, how to design a flue gas purification device which is simple, efficient, small in size, low in investment, reliable in operation, high in adaptive humidity, high in content of pollutants such as fine smoke particles and difficult to treat is a problem to be solved urgently by technical staff in the field.

Disclosure of Invention

The invention provides a centrifugal wet-type smoke purifier aiming at the problems in the field at present.

The invention adopts the following technical scheme:

the centrifugal wet-type smoke purifier comprises a volute flue, wherein a centrifugal fan is arranged in the volute flue, an opening in the side surface of the volute flue is used as an air inlet, the air inlet is connected with an air inlet flue, a spray pipe is arranged on the inner side of the air inlet flue, an atomizing nozzle is arranged at the top of the spray pipe, and water mist sprayed by the atomizing nozzle covers the cross section of the air inlet flue; the circumferential surface of the volute flue is provided with air outlets, the air outlets are connected with an air outlet flue, and the air outlet flue is provided with a flue gas dehydration device.

Preferably, the rotating shaft of the centrifugal fan is transversely arranged, the side surface of the circular volute flue is vertical, the air inlet position of the volute flue is the air suction direction of the centrifugal fan, the air outlet position of the volute flue is on the circumferential surface of the lower position of the volute flue, and the air outlet flue is horizontally arranged and has the same air outlet direction with the centrifugal fan.

Preferably, the air outlet flue is provided with a drain outlet, the drain outlet is positioned at the lowest position of the volute flue and the air outlet flue, and the sewage is discharged out of the volute flue by the drain outlet.

Preferably, the lowest position of the air inlet pipeline is higher than the lowest positions of the volute flue and the air outlet flue.

Preferably, the sewage draining outlet is positioned at the inner side of the flue gas dehydration device in the air outlet pipeline.

Preferably, a water inlet pipe is arranged outside the air outlet pipeline, the water inlet pipe penetrates through the air inlet flue and then is connected with the spray pipes, and the spray pipes are arranged in the air inlet pipeline in a ring shape.

The centrifugal wet-type smoke purifier captures and absorbs smoke dust in a mode of serially connecting an air fog stage and a water film stage. The gas fog and the water film have high absorption efficiency on the micro-dust particles in the flue gas, can effectively absorb the flue gas, and realize the low emission effect of the industrial flue gas.

The invention is suitable for various flue gas treatments, is particularly suitable for treating flue gas with high humidity, tiny smoke dust particles and other pollutants, and the emission concentration of the pollutants such as flue gas dust and the like after treatment can reach the ultralow emission standard.

The device has simple mechanism, low manufacturing cost and low operation and maintenance cost, and is suitable for flue gas dust removal and purification of small-sized flue gas generation industrial equipment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic structural view of the position of the air outlet of the present invention,

fig. 2 is a top view of the air inlet position of the present invention.

Reference numerals: 1. a volute; 2. an air inlet; 3. an atomizing nozzle; 4. an impeller; 5. a blade; 6. a flue gas dehydration device; 7. a sewage draining outlet; 8. an air outlet; 9. A water inlet pipe 10, an air inlet flue 11 and an air outlet flue.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are provided for illustration and explanation, and are not intended to limit the present invention.

The utility model discloses centrifugation wet-type flue gas purifier, the structure is as shown in figure 1, including inside spiral case 1 that is equipped with the impeller, spiral case 1's side opening is as air inlet 2, and air inlet flue 10 is connected to air inlet 2. The impeller consists of a plurality of uniformly distributed blades. The inner side of the air inlet flue 10 is provided with a spray pipe, the top of the spray pipe is provided with an atomizing nozzle, the outer part of the air outlet pipeline is provided with a water inlet pipe 9, the water inlet pipe 9 penetrates through the air inlet flue 10 and then is connected with the spray pipe, the spray pipes are arranged in the air inlet pipeline in a ring shape, and water mist sprayed by the atomizing nozzle covers the whole section of the air inlet flue. A plurality of atomizing nozzles can be annularly arranged around the blade.

The circumferential surface of the volute 1 is provided with air outlets, air outlet flues 11 are connected to the air outlets, and the air outlet flues 11 are provided with flue gas dehydration devices 6. The air outlet flue 11 is provided with a sewage draining outlet 7, the sewage draining outlet 7 is positioned at the lowest position of the volute 1 and the air outlet flue 11, and the sewage draining outlet 7 drains sewage out of the volute 1. The specific sewage draining outlet 7 is positioned at the inner side of the flue gas dehydration device 6 in the air outlet pipeline.

The rotating shaft of the impeller is transversely arranged, the side surface of the circular volute 1 is vertical, the position of the air inlet 2 of the volute 1 is the air suction direction of the impeller, the position of the air outlet 8 of the volute 1 is on the circumferential surface of the lower part of the volute 1, and the air outlet flue 11 is horizontally arranged and has the same air outlet direction with the impeller. The lowest position of the air inlet pipeline is higher than the lowest positions of the volute 1 and the air outlet flue 11. The volute and the impeller are made of materials which are corrosion-resistant and can resist certain temperature.

The utility model discloses a theory of operation:

the wet-type smoke purifier adopts a brand new technology, adopts a form of connecting an air fog and a water film in series at two stages, and captures and absorbs smoke for two times.

When the dust-containing flue gas enters the air inlet pipeline, the dust-containing flue gas impacts with spray generated by an atomizing nozzle arranged on the inner wall of the air inlet pipeline, and the flue gas and the spray are fully mixed, so that dust in the flue gas is captured and absorbed by primary fog drops. The fog drops continuously move forwards and impact with the blades moving at high speed to form water films on the blades; the dust-containing smoke is high-speed jetted to and impacts the water film of the blade, and dust particles are trapped by the water film.

The impeller runs at a high speed, fog drops carried on the blades and the airflow are thrown to the volute of the device, a water film is formed on the inner wall of the volute, dust-containing smoke which is not collected by the water film of the blades is shot at a high speed and impacts the water film of the volute, dust particles are collected by the water film under the inertia effect, and the dust-containing smoke is purified secondarily. The purified flue gas is dehydrated by a dehydration device to form purified gas flowing out of the gas outlet. The water for absorbing particles and pollution components in the flue gas flows into the lower part inside the volute and flows out from the sewage outlet.

Claims

1. A centrifugal wet-type flue gas purifier is characterized by comprising a volute (1) with an impeller arranged inside, wherein an opening in the side surface of the volute (1) is used as an air inlet (2), the air inlet (2) is connected with an air inlet flue (10), a spray pipe is arranged on the inner side of the air inlet flue (10), an atomizing nozzle is arranged at the top of the spray pipe, and water mist sprayed by the atomizing nozzle covers the cross section of the air inlet flue (10); the circumferential surface of the volute (1) is provided with air holes, the air holes are connected with an air outlet flue (11), and the air outlet flue (11) is provided with a flue gas dehydration device (6).

2. The centrifugal wet type flue gas cleaner as claimed in claim 1, wherein the rotation axis of the impeller is arranged horizontally, the side of the circular volute (1) is erected, the air inlet (2) of the volute (1) is located in the air suction direction of the impeller, the air outlet (8) of the volute (1) is located on the circumferential surface of the lower portion of the volute (1), and the air outlet flue (11) is arranged horizontally and in the same direction as the air outlet direction of the impeller.

3. The centrifugal wet type flue gas purifier as claimed in claim 2, wherein the exhaust flue (11) is provided with a drain outlet (7), the drain outlet (7) is located at the lowest position of the volute (1) and the exhaust flue (11), and the drain outlet (7) discharges sewage out of the volute (1).

4. A centrifugal wet type flue gas cleaner as claimed in claim 3, wherein the lowest position of the inlet duct is higher than the lowest positions of the scroll casing (1) and the outlet flue (11).

5. A centrifugal wet flue gas cleaner according to claim 3, wherein the blow-off outlet (7) is located inside the flue gas dehydration means (6) in the outlet duct.

6. A centrifugal wet flue gas cleaner as claimed in claim 1, wherein the outlet duct is externally provided with a water inlet pipe (9), the water inlet pipe (9) is connected to the nozzles after passing through the inlet flue (10), and the nozzles are arranged in the inlet duct in a ring shape.