CN221964917U - Flue gas desulfurization pin-removal dust removal device - Google Patents

Abstract

The utility model relates to a flue gas desulfurization, denitrification and dust removal device, comprising a tower body, an air inlet is fixedly arranged on the left side of the tower body, a clean air outlet is fixedly arranged on the right side of the tower body, a reserved port is fixedly arranged on the outer side of the tower body, a dust exhaust pipe is fixedly connected to the bottom of the tower body, a support frame is fixedly connected to the bottom of the tower body, and a dust removal structure is connected inside the tower body. The flue gas desulfurization, denitrification and dust removal device can improve the mass transfer efficiency, separation efficiency and operation stability of the tower body by setting a dust removal structure, reducing the liquid film thickness on the inner wall of the tower body and reducing the liquid film resistance, which is beneficial to the desulfurization and denitrification treatment of the flue gas, and finally discharged from the dust exhaust pipe, which is convenient for manual cleaning, thereby further reducing the manpower and time costs, the atomization treatment area is large, the contact is comprehensive, the demisting and dust removal are complete, there is no nozzle atomization, blockage is avoided, and the subsequent treatment pressure is reduced.

Description

A flue gas desulfurization, denitrification and dust removal device

Technical Field

The utility model relates to the technical field of flue gas desulfurization, denitrification and dust removal, in particular to a flue gas desulfurization, denitrification and dust removal device.

Background Art

To control the deteriorating atmospheric environment and control the emission of pollutants such as SOx, NOx, and particulate matter (hereinafter referred to as PM) in the flue gas of industrial kilns is the top priority of current atmospheric pollution control. At present, various flue gas purification technologies are widely used at home and abroad, such as ozone oxidation denitrification in power plants, FGD (flue gas desulfurization) process, catalytic flue gas wet desulfurization process in refineries, etc. Although these technologies are relatively mature and have many industrial achievements, these technologies generally have high PM in purified flue gas, incomplete removal of NH and SO, and the flue gas has "tail feathers and blue stewing" phenomena. At the same time, the TN (total nitrogen content) of the discharged salt-containing wastewater exceeds the standard, and the sulfate emission causes salinization in the surrounding area.

In the prior art, a coal-fired boiler will generate a large amount of flue gas when in use. The general technology will still carry a large amount of mist particles and particulate matter after the spray layer is used. The reason is that the flue gas rises too fast and the spray cannot achieve full coverage and contact, resulting in part of the flue gas not being treated cleanly. After the equipment has been used for a long time, it is found that the staff is required to manually scrape the dust in the equipment. The cleaning process is too troublesome and inconvenient. The entire dust removal and cleaning process takes a lot of time, which affects the progress of flue gas purification. For this reason, we propose a flue gas desulfurization, denitrification and dust removal device.

Utility Model Content

In view of the deficiencies in the prior art, the utility model provides a flue gas desulfurization, denitrification and dust removal device, which has the advantages of thorough dust removal and automatic cleaning, and solves the problem of cumbersome cleaning methods that consume a lot of manpower and time.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas desulfurization, denitrification and dust removal device, comprising a tower body, an air inlet is fixedly arranged on the left side of the tower body, a clean air outlet is fixedly arranged on the right side of the tower body, a reserved port is fixedly arranged on the outer side of the tower body, a dust exhaust pipe is fixedly connected to the bottom of the tower body, a support frame is fixedly connected to the bottom of the tower body, a dust removal structure is connected inside the tower body, a pulse valve is fixedly connected to the outer side of the tower body, a gathering pipe is fixedly connected inside the tower body, a blowing pipe is fixedly connected to the output end of the gathering pipe, a baffle demister group is fixedly connected inside the tower body, and a control panel is fixedly connected to the outer surface of the tower body;

The dust removal structure includes a side plate, the inner wall of the tower body is fixedly connected to the side plate, the inner wall of the side plate is fixedly connected to a filter plate, the interior of the filter plate is fixedly connected to a separation net, the inner wall of the side plate is fixedly connected to a support plate, and the interior of the side plate is movably connected to a ball ring filler.

Furthermore, a rotary switch valve is fixedly arranged inside the dust exhaust pipe, and an air bag is fixedly connected to the outer surface of the tower body.

Furthermore, the output end of the air bag is fixedly connected to a pulse valve, and the output end of the pulse valve is fixedly connected to a gathering pipe.

Furthermore, the baffle demister group as a whole is composed of two baffle demisters, and the internal gap of the baffle demister with a higher installation height is larger than the internal gap of the baffle demister with a lower height.

Furthermore, a control panel is electrically connected to the right side of the baffle demister group, the pulse valve adopts a right-angle electromagnetic pulse valve, and a controller matching the electrical signal of the pulse valve is fixedly connected inside the control panel.

Furthermore, a support hump is fixedly connected to the top of the support plate, and a number of ball ring fillers are movably connected to the top of the support plate, and a filter plate is fixedly connected to the bottom of the support plate.

Compared with the prior art, the technical solution of this application has the following beneficial effects:

1. The flue gas desulfurization, denitrification and dust removal device has a dust removal structure, a built-in ball ring filler, a supporting hump and a small window hole linkage design opened inside the separation net, so that the equipment can reduce the liquid flow resistance during the desulfurization and denitrification process, help the liquid to be better dispersed, make the gas-liquid contact more complete, increase the gas-liquid contact area, reduce the liquid film thickness on the inner wall of the tower body, reduce the liquid film resistance, and improve the mass transfer efficiency, separation efficiency and operation stability of the tower body.

2. The flue gas desulfurization, denitrification and dust removal device has a pulse valve and a baffle demister group, which double slows down the rising speed of the flue gas. During the rising process, the dust particles in the flue gas collide with the side wall of the baffle plate, intercept the dust particles, and slide down the baffle plate to the bottom of the tower body. The alkaline solution is sprayed in layers and gradually, which is beneficial to the desulfurization and denitrification of the flue gas. Finally, it is discharged from the dust exhaust pipe, which is convenient for manual cleaning, thereby further reducing the manpower and time costs. The atomization treatment area is large, the contact is comprehensive, the demisting and dust removal is complete, there is no nozzle atomization, blockage is avoided, and the subsequent processing pressure is reduced. Compared with the traditional industrial waste gas dust treatment equipment with unsightly appearance, large footprint and troublesome installation, the utility model has beautiful appearance, small footprint, easy installation and maintenance, and low operating cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a half-section plan view of the utility model as a whole;

Figure 2 is a half-section top view of the utility model as a whole;

FIG3 is a three-dimensional exploded view of the dust removal structure of the utility model;

FIG. 4 is a three-dimensional detail diagram of the blowing tube of the utility model.

In the figure: 1. tower body; 2. air inlet; 3. clean air outlet; 4. reserved port; 5. dust exhaust pipe; 6. rotary switch valve; 7. support frame; 8. dust removal structure; 801. side plate; 802. filter plate; 803. separation net; 804. support plate; 805. ball ring packing; 9. pulse valve; 10. air bag; 11. gathering pipe; 12. injection pipe; 13. baffle demister group; 14. control panel.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-4. A flue gas desulfurization, denitrification and dust removal device in this embodiment includes a tower body 1, an air inlet 2 is fixedly arranged on the left side of the tower body 1, a clean air outlet 3 is fixedly arranged on the right side of the tower body 1, a reserved port 4 is fixedly arranged on the outer side of the tower body 1, a dust exhaust pipe 5 is fixedly connected to the bottom of the tower body 1, a support frame 7 is fixedly connected to the bottom of the tower body 1, a dust removal structure 8 is connected inside the tower body 1, a pulse valve 9 is fixedly connected to the outer side of the tower body 1, a gathering pipe 11 is fixedly connected inside the tower body 1, a spray pipe 12 is fixedly connected to the output end of the gathering pipe 11, a baffle demister group 13 is fixedly connected inside the tower body 1, and a control panel 14 is fixedly connected to the outer surface of the tower body 1;

The dust removal structure 8 includes a side plate 801, the inner wall of the tower body 1 is fixedly connected with the side plate 801, the inner wall of the side plate 801 is fixedly connected with a filter plate 802, the inside of the filter plate 802 is fixedly connected with a separation net 803, the inner wall of the side plate 801 is fixedly connected with a support plate 804, and the inside of the side plate 801 is movably connected with a ball ring filler 805;

During specific implementation, the air bag 10 is connected to the injection pipe 12 through the pulse valve 9 and the gathering pipe 11, the pulse valve 9 is connected to the tower body 1 through the air bag 10, and the air inlet 2, the clean air outlet 3, and the reserved port 4 are equidistantly distributed in circles on the outside of the tower body 1.

The filter plate 802 is connected to the ball ring packing 805 through the support plate 804. The bottom of the spray pipe 12 is fixedly provided with 16 spray holes that are evenly distributed, and the inside of the spray holes is fixedly connected with a nozzle.

When implementing, follow these steps:

1) First, the dust-laden gas enters the tower body 1 from the air inlet 2, and some large dust particles in the gas fall into the dust exhaust pipe 5 under the action of inertia and gravity and are separated;

2) Then the dusty gas containing tiny particles passes through the first baffle demister 2, the flue gas rises slowly, and some large dust particles are removed, and the first step of desulfurization and denitrification can be carried out. Then, it passes through the second baffle demister 3 to remove most of the small dust particles, and the second step of desulfurization and denitrification can be carried out. The dust flows into the bottom of the tower body 1 with the sprayed liquid;

3) The pulse valve 9 is opened again, and the compressed air expands rapidly in the upper tower body 1 in a very short time, rushes into the dust removal structure 8, and causes the filter plate 802 and the separation net 803 to vibrate. Under the action of the reverse airflow, the dust attached to the inside of the ball ring packing 805 is peeled off and falls into the dust exhaust pipe 5;

4) Finally, the staff can adjust the rotary switch valve 6 to discharge the dust in a centralized manner.

In summary, the flue gas desulfurization, denitrification and dust removal device, by setting a dust removal structure 8, a built-in ball ring filler 805, and a linkage design of small windows opened inside the supporting hump and the separation net 803, can reduce the liquid flow resistance of the equipment during the desulfurization and denitrification process, help to better disperse the liquid, make the gas-liquid contact more complete, increase the gas-liquid contact area, reduce the liquid film thickness on the inner wall of the tower body 1, reduce the liquid film resistance, and improve the mass transfer efficiency, separation efficiency and operation stability of the tower body 1.

In addition, by arranging the pulse valve 9 and the baffle demister group 13, double deceleration is achieved to reduce the rising speed of the flue gas. During the rising process, the dust particles in the flue gas collide with the side walls of the baffle plate, intercept the dust particles, slide down the baffle plate to the bottom of the tower body 1, and gradually spray the alkaline solution in layers, which is beneficial to the desulfurization and denitrification treatment of the flue gas. Finally, it is discharged from the dust exhaust pipe 5, which is convenient for manual cleaning, thereby further reducing the manpower and time costs. The atomization treatment area is large, the contact is comprehensive, the demisting and dust removal is complete, there is no nozzle atomization, blockage is avoided, and the subsequent processing pressure is reduced. Compared with the traditional industrial waste gas dust treatment equipment with unsightly appearance, large footprint and troublesome installation, the utility model has beautiful appearance, small footprint, easy installation and maintenance, and low operating cost.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A flue gas desulfurization, denitrification and dust removal device, comprising a tower body (1), characterized in that: an air inlet (2) is fixedly arranged on the left side of the tower body (1), a clean air outlet (3) is fixedly arranged on the right side of the tower body (1), a reserved port (4) is fixedly arranged on the outer side of the tower body (1), a dust exhaust pipe (5) is fixedly connected to the bottom of the tower body (1), a support frame (7) is fixedly connected to the bottom of the tower body (1), a dust removal structure (8) is connected inside the tower body (1), a pulse valve (9) is fixedly connected to the outer side of the tower body (1), a gathering pipe (11) is fixedly connected inside the tower body (1), a spray pipe (12) is fixedly connected to the output end of the gathering pipe (11), a baffle demister group (13) is fixedly connected inside the tower body (1), and a control panel (14) is fixedly connected to the outer surface of the tower body (1); The dust removal structure (8) comprises a side plate (801), the inner wall of the tower body (1) is fixedly connected to the side plate (801), the inner wall of the side plate (801) is fixedly connected to a filter plate (802), the interior of the filter plate (802) is fixedly connected to a separation net (803), the inner wall of the side plate (801) is fixedly connected to a support plate (804), and the interior of the side plate (801) is movably connected to a ball ring filler (805). 2. A flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that a rotary switch valve (6) is fixedly arranged inside the dust exhaust pipe (5), and an air bag (10) is fixedly connected to the outer surface of the tower body (1). 3. A flue gas desulfurization, denitrification and dust removal device according to claim 2, characterized in that: the output end of the air bag (10) is fixedly connected to a pulse valve (9), and the output end of the pulse valve (9) is fixedly connected to a gathering pipe (11). 4. A flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that the baffle demister group (13) as a whole is composed of two baffle demisters, and the internal gap of the baffle demister with a higher installation height is larger than the internal gap of the baffle demister with a lower height. 5. A flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: the right side of the baffle demister group (13) is electrically connected to a control panel (14), the pulse valve (9) adopts a right-angle electromagnetic pulse valve, and the interior of the control panel (14) is fixedly connected to a controller that matches the electrical signal of the pulse valve (9). 6. A flue gas desulfurization, denitrification and dust removal device according to claim 1, characterized in that: a support hump is fixedly connected to the top of the support plate (804), and a number of ball ring fillers (805) are movably connected to the top of the support plate (804), and a filter plate (802) is fixedly connected to the bottom of the support plate (804).