CN212998926U

CN212998926U - Bag-type dust collector for desulfurization

Info

Publication number: CN212998926U
Application number: CN202020929700.XU
Authority: CN
Inventors: 范健; 魏辉; 王嵩; 张亮
Original assignee: Huaneng Shaanxi Weinan Thermal Power Co ltd
Current assignee: Datang Weinan Thermal Power Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-20
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a sack cleaner for desulfurization, including the intake pipe, the desulphurization unit who links to each other with the intake pipe, with the exhaust fan of desulphurization unit pipe connection, with the dust removal box of exhaust fan pipe connection, install in dust removal filter bag in the dust removal box, with the gaseous recoil device and the filtration gas extraction device of the inside intercommunication of dust removal filter bag to and the collection mouth that dust removal bottom half intercommunication just is used for collecting the dust. The utility model discloses when admitting air, carry into in the desulfurization box with the desulfurizer through the desulfurization liquid pipe, rethread desulfurization shower nozzle sprays the desulfurizer in the desulfurization box for the sulfur dioxide in desulfurizer and the dirty gas takes place to react, generate the result of dry powder form, make it fall in desulfurization bottom half, along with unnecessary unreacted desulfurizer from going out during the water recess flows in the outlet pipe together, and the dirty gas after the desulfurization is removed dust in the extraction entering dust removal box by the air exhaust fan, can realize the mesh to the dirty gas desulfurization.

Description

Bag-type dust collector for desulfurization

Technical Field

The utility model relates to an industrial desulfurization field, specific saying relates to the sack cleaner for the desulfurization.

Background

The bag-type dust collector is a dry dust filter. It is suitable for trapping fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, the dust-containing gas is filtered by the filtering action of the fiber fabric, after the dust-containing gas enters the bag type dust collector, dust with large particles and large specific gravity falls into the dust hopper due to the sedimentation of the gravity, and when the gas containing fine dust passes through the filter material, the dust is blocked, so that the gas is purified. The method is mainly used for places which generate dust (PM 10, PM 2.5) such as power plants (self-contained power plants including refineries), coke ovens, chemical plants, metal smelting plants, garbage incineration pools and the like, but the places can generate sulfur dioxide pollutants besides the dust, and if the dust cannot be effectively treated, serious damage is caused to the ecological environment.

The existing bag-type dust remover only treats dust, but lacks the treatment of sulfur; even if some filter bag dust removers are provided with a part for sulfur treatment, the desulfurized dust is adhered to the surface of the filter bag, so that the surface of the filter bag is blocked, namely the phenomenon of bag pasting occurs.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems existing in the prior art, the utility model provides a bag-type dust remover for desulfurization, which has the dust not easy to adhere on the surface of a filter bag.

In order to achieve the above object, the utility model adopts the following technical scheme:

the bag-type dust remover for desulfurization comprises an air inlet pipe, a desulfurization device connected with the air inlet pipe, an air exhaust fan connected with a pipeline of the desulfurization device, a dust removal box body connected with the pipeline of the air exhaust fan, a dust removal filter bag arranged in the dust removal box body, a gas backflushing device and a filtered gas extraction device communicated with the interior of the dust removal filter bag, and a collection port communicated with the bottom of the dust removal box body and used for collecting dust.

Further, desulphurization unit includes the desulfurization box of lower part and intake-tube connection, and one end is located many desulfurization liquid pipes in the desulfurization box, with desulfurization shower nozzle that desulfurization liquid union coupling just is located the desulfurization box for it is fixed to support desulfurization liquid pipe and its backup pad that is provided with a plurality of bleeder vents set up in the play water recess of desulfurization bottom of the box portion, and with desulfurization box intercommunication and the outlet pipe relative with play water groove position, wherein, the intake pipe is located the outlet pipe top.

Furthermore, a heating layer is laid on the inner wall of the dust removal box body.

Further, the dust removal filter bag is including being fixed in a plurality of bracing pieces of dust removal box internal top surface to and cup joint in a plurality of on the bracing piece and with the internal top surface of dust removal box the bag body of being connected.

Specifically, gaseous recoil device including pass the dust removal box and get into the internal gaseous recoil pipe of bag, with the recoil fan that gaseous recoil union coupling to and equidistant distribution in on the gaseous recoil pipe and with the multilayer jet-propelled head of gaseous recoil pipe intercommunication, wherein, the recoil fan is located outside the dust removal box.

Specifically, each layer of the gas nozzles are distributed on a circular surface with the gas recoil pipe as the center of a circle at equal angles.

Specifically, the filtered air extraction device comprises an exhaust pipe penetrating through the dust removal box body to enter the bag body, and a filtered air extraction fan connected with the exhaust pipe through a pipeline, wherein the filtered air extraction fan is positioned outside the dust removal box body.

Furthermore, a one-way vent valve is arranged on a connecting pipeline between the air exhaust fan and the dust removal box body.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses when admitting air, carry into in the desulfurization box with the desulfurizer through the desulfurization liquid pipe, rethread desulfurization shower nozzle sprays the desulfurizer in the desulfurization box, make the sulfur dioxide in desulfurizer and the dirty gas react, generate the result of dry powder form, make it fall in desulfurization bottom half, along with unnecessary unreacted desulfurizer from going out water recess inflow outlet pipe together, and the dirty gas after the desulfurization is removed dust in the extraction entering dust removal box of air exhaust fan, and desulfurization end product desulfurization sediment is a free flow's dry powder mixture, no secondary pollution, it can be collected reutilization after following the outlet pipe outflow.

(2) The utility model discloses a be provided with gaseous recoil pipe and multilayer jet-propelled head in dust removal filter bag, can extract outside gas through the recoil fan and carry out the backwash to dust removal filter bag, will be attached to the dust on filter bag surface and dash and fall, make it drop and collected in collecting the mouth.

(3) The utility model discloses one deck zone of heating has been laid to the dust removal box inner wall, can reduce dusty gas humidity to the dirty gas heating that gets into in the dust removal box to difficult the emergence when dusty gas gets into the dust removal box and condenses, reduced the dust and condensed and cause the filter bag to block up, stick with paste the possibility of bag, increased the life and the dust removal effect of filter bag.

(4) The utility model discloses install one-way breather valve on the connecting tube of exhaust fan and dust removal box, can guarantee in the backflush, avoid being attached to in the dust on filter bag surface is washed back desulphurization unit.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view of the dust removing box of the present invention.

Wherein, the names corresponding to the reference numbers are:

1-air inlet pipe, 2-air exhaust fan, 3-dust removal box body, 4-dust removal filter bag, 5-collection port, 6-desulfurization box body, 7-desulfurization liquid pipe, 8-desulfurization spray head, 9-support plate, 10-water outlet groove, 11-water outlet pipe, 12-heating layer, 13-support rod, 14-bag body, 15-filtered air exhaust fan, 16-air backwash pipe, 17-air exhaust pipe, 18-backwash fan, 19-air spray head and 20-one-way vent valve.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Examples

As shown in fig. 1-2, the bag-type dust collector for desulfurization comprises an air inlet pipe 1, an air exhaust fan 2, a dust collection box body 3, a dust collection filter bag 4, a collection port 5, a desulfurization device, a gas backflushing device and a filtered gas extraction device. The gas inlet pipe 1 is used for introducing dust-containing gas and is connected to the side wall of the desulfurization device; the desulfurization device is used for carrying out desulfurization treatment on the dust-containing gas; the air exhaust fan 2 is connected with a pipeline at the top of the desulfurization device and is used for exhausting the desulfurized dust-containing gas; the dust removal box body 3 is connected with the air exhaust fan 2 through a pipeline and is used for introducing dust-containing gas and enabling the dust-containing gas to be filtered by a dust removal filter bag 4 positioned in the dust removal box body 3; the dust removal filter bag 4 is arranged in the dust removal box body 3, and a gas backflushing device for backflushing surface dust of the dust removal filter bag 4 and a filtered gas extraction device for extracting gas filtered by the dust removal filter bag 4 are arranged in the dust removal filter bag 4; the collecting port 5 is communicated with the bottom of the dust removing box body 3 and is used for collecting the filtered dust.

The desulphurization device comprises a desulphurization box body 6, a desulphurization liquid pipe 7, a desulphurization spray head 8, a support plate 9, a water outlet groove 10 and a water outlet pipe 11. Wherein, the lower part of the desulfurization box body 6 is communicated with the air inlet pipe 1, the top part of the desulfurization box body is connected with the air exhaust fan 2 by a pipeline, and the desulfurized dusty gas is exhausted from the top part of the desulfurization box body 6; the number of the desulfurization liquid pipes 7 is multiple, and the desulfurization liquid pipes are used for connecting an external desulfurizer and enabling the external desulfurizer to enter the desulfurization box body 6 to desulfurize the dust-containing gas; the desulfurization spray head 8 is connected with the desulfurization liquid pipe 7 and uniformly sprays the desulfurizer into the desulfurization box body 6, so that the desulfurizer is fully used; the supporting plate 9 is fixed in the desulfurization box body 6, and is provided with a plurality of air holes for supporting and fixing the desulfurization liquid pipe 7; a water outlet groove 10 is formed in the bottom of the desulfurization box body 6, the desulfurizer reacts with sulfur dioxide in the dust-containing gas, and the generated dry powder-shaped product falls on the bottom of the desulfurization box body 6 and flows into a water outlet pipe 11 from the water outlet groove 10 along with the excessive unreacted desulfurizer; the water outlet pipe 11 is used for discharging the excessive unreacted desulfurizer and the dry powder product out of the desulfurization box body 6.

In order to ensure that dust in the dust-containing gas cannot be adhered to the bag body 14, a heating layer 12 is laid on the inner wall of the dust removal box body 3 to reduce the humidity of the dust-containing gas, so that the dust-containing gas is not easy to condense when entering the dust removal box body 3.

The dust-removing bag 4 comprises a support bar 13 and a bag body 14. Wherein, a plurality of support rods 13 are arranged, and are fixed on the inner top surface of the dust removal box body 3 and used for supporting the fixed bag body 14; the bag body is sleeved on the support rods 13.

The gas backflush device comprises a gas backflush pipe 16, a backflush fan 18 and a gas spray head 19. Wherein, the gas back flushing pipe 16 passes through the dust removal box body 3 and enters the bag body 14; the back flushing fan 18 is connected with the gas back flushing pipe 16 and is used for extracting external gas and back flushing the bag body 14; the jet heads 19 are arranged in multiple layers at equal intervals, and the jet heads are distributed on a circular surface with the gas back-flushing pipe 16 as the circle center at equal angles, so that all surfaces of the bag body 14 can be flushed, and the long-term effective use of the bag body 14 is ensured.

The filtered air extraction device includes a filtered air extraction fan 15 and an extraction duct 17. Wherein, one end of the air extraction pipe 17 is positioned in the bag body 14 and is used for extracting the filtered air; the filtered air extraction fan 15 is connected to an extraction duct 17 for extracting air.

During back flushing, a one-way vent valve 20 is arranged on a connecting pipeline between the exhaust fan 2 and the dust removal box body 3 in order to avoid that dust attached to the surface of the filter bag is flushed back to the desulfurization device.

When the utility model is used, gas is input into the desulfurization box body 6 through the air inlet pipe 1, the desulfurizer is sprayed into the desulfurization box body 6 through the desulfurization spray head 8, sulfur in dust-containing gas is treated and then falls on the inner bottom surface of the desulfurization box body 6 to flow to the water outlet groove 10 along with redundant desulfurizer, and then enters the water outlet pipe 11 to be collected, the residual dust-containing gas is sucked into the dust removal box body 3 by the air exhaust fan 2 to be removed by the dust removal filter bag 4, dust falls into the collection port 5 to be collected, and filtered gas is sucked away from the exhaust pipe 17; when the dust removal filter bag 4 needs to be cleaned, the filtered air extraction fan 15 stops working, the back flush fan 18 starts working, air is sprayed from the air back flush pipe 16 to the air nozzle 19, the air nozzle 19 performs back air-spraying flushing on the filter bag 14, and dust attached to the surface of the filter bag 14 is blown off.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims

1. Sack cleaner for desulfurization, its characterized in that, including intake pipe (1), with the desulphurization unit that intake pipe (1) links to each other, with air exhaust fan (2) of desulphurization unit pipe connection, with dust removal box (3) of air exhaust fan (2) pipe connection, install in dust removal filter bag (4) in dust removal box (3), with the gaseous recoil device and the filtration gas draw-out device of the inside intercommunication of dust removal filter bag (4), and with collection mouth (5) that just are used for collecting the dust of dust are intercommunication bottom dust removal box (3).

2. The bag-type dust collector for desulfurization according to claim 1, wherein the desulfurization device comprises a desulfurization box body (6) with a lower portion connected with an air inlet pipe (1), a plurality of desulfurization liquid pipes (7) with one ends positioned in the desulfurization box body (6), a desulfurization spray head (8) connected with the desulfurization liquid pipes (7) and positioned in the desulfurization box body (6), a support plate (9) for supporting and fixing the desulfurization liquid pipes (7) and provided with a plurality of air holes, a water outlet groove (10) arranged at the bottom of the desulfurization box body (6), and an water outlet pipe (11) communicated with the desulfurization box body (6) and positioned opposite to the water outlet groove (10), wherein the air inlet pipe (1) is positioned above the water outlet pipe (11).

3. The bag-type dust collector for desulfurization according to claim 1, wherein a heating layer (12) is laid on the inner wall of the dust collection box body (3).

4. The bag-type dust collector for desulfurization according to claim 1, wherein the dust-removing filter bag (4) comprises a plurality of support rods (13) fixed to the inner top surface of the dust-removing box body (3), and a bag body (14) sleeved on the plurality of support rods (13) and connected to the inner top surface of the dust-removing box body (3).

5. The bag-type dust collector for desulfurization according to claim 4, wherein the gas backflushing device comprises a gas backflushing pipe (16) which penetrates through the dust collection box body (3) and enters the bag body (14), a backflushing fan (18) which is connected with the gas backflushing pipe (16), and a plurality of layers of gas nozzles (19) which are distributed on the gas backflushing pipe (16) at equal intervals and are communicated with the gas backflushing pipe (16), wherein the backflushing fan (18) is positioned outside the dust collection box body (3).

6. The bag-type dust collector for desulfurization according to claim 5, wherein each layer of the gas nozzles (19) is distributed at an equal angle on a circular surface centered on the gas recoil pipe (16).

7. The bag-type dust collector for desulfurization according to claim 4, wherein said filtered gas extracting means comprises an exhaust pipe (17) penetrating through the dust-collecting box (3) into the bag body (14), and a filtered gas extracting fan (15) connected to said exhaust pipe (17) by piping, wherein said filtered gas extracting fan (15) is located outside the dust-collecting box (3).

8. The bag-type dust collector for desulfurization according to claim 1, wherein the connecting pipe of the air exhaust fan (2) and the dust collection box body (3) is provided with a one-way vent valve (20).