Efficient desulfurization and denitrification composite dust removal device

Abstract

The utility model discloses an efficient desulfurization and denitrification compound dust removal device, which comprises a removal tower, an outer discharge pipe and a filter gas box, in the use process of the efficient desulfurization and denitrification compound dust removal device, when a first-stage spray bin sprays treatment liquid to an area of a pulsating disc through a first-stage spray head, the treatment liquid can be quickly sprayed downwards, the treatment liquid can impact the surface of the pulsating disc, and the surface of the pulsating disc can be removed. And meanwhile, due to the arc-shaped wave surface on the surface of the wave starting disc, the treatment liquid accumulated in the arc-shaped wave surface area is rapidly splashed to ripple, due to the high temperature of the boiler gas, the splashed liquid is rapidly atomized, so that organic impurities in the boiler gas sprayed out of the gas spray head are effectively removed, and the treatment effect of the boiler gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler gas treatment technical field, concretely is a kind of high-efficiency desulfurization and denitrification composite dust removal device. BACKGROUND

[0002] Desulfurization refers to the removal of sulfur from fuel before combustion and the removal of sulfur from flue gas before emission. It is one of the important technical measures to prevent and control air pollution. Desulfurization methods generally include pre-combustion, in-combustion and post-combustion desulfurization. With the development of industry and the improvement of people's living standards, the demand for energy is increasing, and SO2 in coal-fired flue gas has become the main cause of air pollution. Reducing SO2 pollution has become a top priority in today's air environmental management.

[0003] According to the dry and wet state of the absorbent and desulfurization product in the desulfurization process, the desulfurization technology can be divided into wet method, dry method and semi-dry (semi-wet) method. Wet FGD technology uses a solution or slurry containing an absorbent to desulfurize in a wet state and handle the desulfurization product. This method has the advantages of fast desulfurization reaction speed, simple equipment, high desulfurization efficiency, but it has the problems of severe corrosion, high operation and maintenance cost and easy secondary pollution.

[0004] The working principle of the desulfurization and denitrification equipment is: composed of composite catalytic oxidation process and absorption liquid process, compared with the traditional wet desulfurization + SCR / SNCR process, it realizes low investment and high desulfurization and denitrification efficiency. The boiler flue gas first enters the oxidation tower, and the NO is oxidized into NO2 and N2O3 with high solubility, then enters the absorption tower, and uses the absorption liquid as the absorbent to remove the nitrogen oxides NOx and sulfur dioxide SO2 in the flue gas, and after the absorption of hydrogen sulfide, the slurry is replaced by lime as a reducing agent to circulate and use.

[0005] In the prior art, the publication number "CN214598220U" discloses a kind of high-efficiency desulfurization and denitrification composite dust removal device, including dust removal chamber, the right side of dust removal chamber is provided with weak alkali liquid tank, pump is installed on the upper end of weak alkali liquid tank, first motor is installed on the upper end of dust removal chamber, first motor is connected with first rotating shaft below, fan is installed on first rotating shaft, upper filter screen is arranged below fan, lower filter screen is arranged below upper filter screen, second motor is installed on lower filter screen, second rotating shaft is connected with second motor on the upper end, sealing sleeve is sleeved on second rotating shaft, protective cover is installed on the side of sealing sleeve, stirring vane is installed above sealing sleeve, and stirring vane is also provided with air hole. By designing stirring vane, air hole and atomizing nozzle, the reaction and purification of weak alkali liquid and harmful gas are improved.

[0006] However, the prior art still has great deficiencies, such as:

[0007] The device and the prior art have the problems that the liquid volume removed by the atomizing nozzle is small, the atomizing nozzle outputs liquid slowly, and when a large amount of boiler gas is treated, the liquid removed by the atomizing nozzle is easily evaporated quickly, so that the desulfurization and denitrification effect of the boiler gas cannot be ensured. Utility model content

[0008] The utility model discloses a kind of high-efficiency desulfurization and denitrification composite dust removal devices, to solve the problems presented in the above background art.

[0009] To achieve the above object, the utility model provides the following technical scheme: a kind of high-efficiency desulfurization and denitrification composite dust removal device, including removal tower, outer discharge pipe and filter gas box, the filter gas box bottom is provided with vertical support, the filter gas box one side is communicated with the removal tower, the outer discharge pipe is communicated and is installed in the removal tower top, the removal tower one side is equipped with filter tube, the filter tube one end is communicated and is installed with filter tank;

[0010] The spray liquid flow impact oscillation removal unit is arranged in the interior of the removal tower and is used for spraying and removing organic impurities from smoke dust gas entering the interior of the removal tower.

[0011] Preferably, the spray liquid flow impact oscillation removal unit includes an oscillation part, the oscillation part includes a wave generating disc, the wave generating disc is installed in the middle section area of the interior of the removal tower, an arc-shaped wave surface is arranged on the surface of the wave generating disc, a pressure relief valve pipe is communicated and installed in the center area of the arc-shaped wave surface, a separation liquid cavity is arranged in the bottom of the interior of the removal tower, and the pressure relief valve pipe is communicated with the separation liquid cavity.

[0012] Preferably, the spray liquid flow impact oscillation removal unit further includes a spraying part, the spraying part includes a liquid supply tank, the liquid supply tank is installed on the top of the filter gas box, a liquid delivery pipe is communicated and installed at the bottom of the liquid supply tank, a two-stage electromagnetic valve is communicated and installed at one end of the liquid delivery pipe, a liquid inlet one branch pipe and a liquid inlet two branch pipe are respectively communicated and installed on the two-stage electromagnetic valve, the liquid inlet one branch pipe and the liquid inlet two branch pipe are sealingly inserted into the interior of the removal tower, a primary spraying bin is communicated and installed at one end of the liquid inlet two branch pipe, and a primary spraying head is communicated and installed at the bottom of the primary spraying bin.

[0013] Preferably, a two-stage spraying bin is installed at one end of the liquid inlet one branch pipe, and a two-stage spraying head is communicated and installed at the bottom of the two-stage spraying bin.

[0014] Preferably, one side of the filter cartridge is communicated with an air inlet pipe, the other side of the filter cartridge is communicated with an air outlet pipe, one side of the air outlet pipe is communicated with a first electromagnetic valve, the first electromagnetic valve is communicated with a gas distribution pipe, and the gas distribution pipe is inserted into the removal tower.

[0015] Preferably, one end of the gas distribution pipe is communicated with a gas nozzle, and the bottom of the gas nozzle is communicated with a gas jet head.

[0016] Compared with the prior art, the filter cartridge has the beneficial effects that:

[0017] When the first spray chamber sprays the treatment liquid to the wave plate area through the first spray head, the treatment liquid is quickly sprayed downward, the treatment liquid impacts the surface of the wave plate, and the treatment liquid accumulated on the arc-shaped wave surface of the wave plate is quickly splashed into ripples due to the high temperature of the boiler gas, so that the splashed liquid is quickly atomized, and the organic impurities in the boiler gas sprayed from the gas jet head are effectively removed, thereby improving the treatment effect of the boiler gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole schematic view of the device of the utility model;

[0019] Figure 2 It is a schematic view of a separation liquid cavity part in the utility model;

[0020] Figure 3 It is a schematic view of a first spray chamber and a second spray chamber part in the utility model;

[0021] Figure 4 It is a schematic view of an arc-shaped wave surface part in the utility model;

[0022] Figure 5 It is a schematic view of a pressure relief valve pipe part in the utility model.

[0023] In the drawing: 1, removal tower; 11, wave plate; 111, arc-shaped wave surface; 112, pressure relief valve pipe; 12, filter pipe; 13, filter tank; 14, separation liquid cavity; 2, external discharge pipe; 3, vertical support; 4, filter cartridge; 41, air inlet pipe; 42, air outlet pipe; 43, first electromagnetic valve; 44, gas distribution pipe; 45, gas nozzle; 46, gas jet head; 5, liquid supply pipe; 51, second electromagnetic valve; 52, liquid inlet one distribution pipe; 53, liquid inlet two distribution pipe; 6, first spray chamber; 61, first spray head; 7, second spray chamber; 71, second spray head; 8, liquid supply tank. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] Please refer to Figures 1-5 The present application provides a technical solution:

[0026] Embodiment one: a high-efficiency desulfurization and denitrification composite dust removal device, comprising a removal tower 1, an external discharge pipe 2 and a filter gas box 4, the filter gas box 4 is provided with a vertical support 3 at the bottom, the filter gas box 4 is communicated with the removal tower 1 at one side, the external discharge pipe 2 is communicated and installed at the top of the removal tower 1, the removal tower 1 is provided with a filter pipe 12 at one side, and the filter pipe 12 is communicated and installed with a filter tank 13 at one end.

[0027] The filter gas box 4 is communicated and installed with an air inlet guide pipe 41 at one side, and the filter gas box 4 is communicated and installed with a gas conveying pipe 42 at the other side, the gas conveying pipe 42 is communicated and installed with a first electromagnetic valve 43 at one side, the first electromagnetic valve 43 is communicated and installed with a gas branch pipe 44, and the gas branch pipe 44 is sealingly inserted into the inside of the removal tower 1.

[0028] The gas branch pipe 44 is communicated and installed with a gas injection pipe 45 at one end, and the gas injection pipe 45 is communicated and installed with a gas injection head 46 at the bottom.

[0029] The spray liquid flow impact oscillation removal unit is arranged in the inside of the removal tower 1 and is used for spraying and removing organic impurities in the smoke dust gas entering the inside of the removal tower 1.

[0030] The spray liquid flow impact oscillation removal unit comprises an oscillation part, and the oscillation part comprises a wave generating disc 11, the wave generating disc 11 is installed in the middle section area of the inside of the removal tower 1, the surface of the wave generating disc 11 is provided with an arc-shaped wave surface 111, the center area of the arc-shaped wave surface 111 is communicated and installed with a pressure relief valve pipe 112, the inside bottom of the removal tower 1 is provided with a separation liquid cavity 14, and the pressure relief valve pipe 112 is communicated with the separation liquid cavity 14.

[0031] The spray liquid flow impact oscillation removal unit further comprises a spraying part, the spraying part comprises a liquid supply tank 8, the liquid supply tank 8 is installed at the top of the filter gas box 4, a liquid supply pipe 5 is communicated and installed at the bottom of the liquid supply tank 8, a secondary electromagnetic valve 51 is communicated and installed at one end of the liquid supply pipe 5, a liquid inlet one branch pipe 52 and a liquid inlet two branch pipe 53 are respectively communicated and installed on the secondary electromagnetic valve 51, the liquid inlet one branch pipe 52 and the liquid inlet two branch pipe 53 are sealingly inserted into the inside of the removal tower 1, a primary spraying bin 6 is communicated and installed at one end of the liquid inlet two branch pipe 53, a primary spraying head 61 is communicated and installed at the bottom of the primary spraying bin 6, a secondary spraying bin 7 is installed at one end of the liquid inlet one branch pipe 52, and a secondary spraying head 71 is communicated and installed at the bottom of the secondary spraying bin 7.

[0032] In the embodiment, the gas nozzle 45 and the gas spray head 46 part slowly injects the wave plate 11 area in the inside of the removal tower 1, at the same time, the secondary electromagnetic valve 51 area injects the spraying liquid in the liquid supply pipe 5 into the primary spraying bin 6 through the liquid inlet two branch pipe 53, the primary spraying bin 6 rapidly sprays the treatment solution, thereby removing the organic impurities in the filter gas, and ensuring that the boiler gas reaches the emission standard.

[0033] Working principle: in the process of using the device, the operator injects the boiler gas needed to be treated into the inside of the filter gas box 4 through the gas inlet pipe 41, the filter gas box 4 is provided with a dust filter screen for the boiler gas, the dust in the inside of the filter gas box 4 is blocked by the dust filter screen after the boiler gas flows through the filter gas box 4, then the boiler gas enters the primary electromagnetic valve 43 area through the gas conveying pipe 42 on one side of the filter gas box 4, and under the control of the primary electromagnetic valve 43, the gas nozzle 45 and the gas spray head 46 part slowly injects the wave plate 11 area in the inside of the removal tower 1, at the same time, the secondary electromagnetic valve 51 area injects the spraying liquid in the liquid supply pipe 5 into the primary spraying bin 6 through the liquid inlet two branch pipe 53, the primary spraying bin 6 rapidly sprays the treatment solution, thereby removing the organic impurities in the filter gas, and ensuring that the boiler gas reaches the emission standard.

[0034] When the primary spraying bin 6 sprays the treatment liquid to the wave plate 11 area through the primary spraying head 61, the treatment liquid is rapidly sprayed downward, the treatment liquid impacts the surface of the wave plate 11, at the same time, due to the arc wave surface 111 of the wave plate 11, the treatment liquid accumulated in the arc wave surface 111 area is rapidly splashed, due to the high temperature of the boiler gas, the splashed liquid is rapidly atomized, thereby effectively removing the organic impurities in the boiler gas sprayed from the gas spray head 46, and improving the treatment effect of the boiler gas.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency desulfurization and denitrification composite dust removal device, characterized in that: Including removal tower (1), external exhaust pipe (2) and filter gas box (4), the bottom of the filter gas box (4) is provided with vertical support (3), one side of the filter gas box (4) is communicated with the removal tower (1), the external exhaust pipe (2) is communicated and installed at the top of the removal tower (1), one side of the removal tower (1) is provided with filter pipe (12), one end of the filter pipe (12) is communicated and installed with filter tank (13); The spray liquid flow impact oscillation removal unit is arranged in the removal tower (1), and is used for spraying and removing organic impurities in the smoke gas entering the inside of the removal tower (1); The spray liquid flow impact oscillation removal unit includes an oscillation part, the oscillation part includes a wave generating disc (11), the wave generating disc (11) is installed in the middle section area inside the removal tower (1), the surface of the wave generating disc (11) is provided with an arc-shaped wave surface (111), the center area of the arc-shaped wave surface (111) is communicated and installed with a pressure relief valve pipe (112), the inside bottom of the removal tower (1) is provided with a separation liquid cavity (14), the pressure relief valve pipe (112) is communicated with the separation liquid cavity (14); The spray liquid flow impact oscillation removal unit further includes a spraying part, the spraying part includes a liquid supply tank (8), the liquid supply tank (8) is installed at the top of the filter gas box (4), the bottom of the liquid supply tank (8) is communicated and installed with a liquid delivery pipe (5), one end of the liquid delivery pipe (5) is communicated and installed with a secondary electromagnetic valve (51), the secondary electromagnetic valve (51) is respectively communicated and installed with a liquid inlet one branch pipe (52) and a liquid inlet two branch pipe (53), the liquid inlet one branch pipe (52) and the liquid inlet two branch pipe (53) are sealingly inserted into the inside of the removal tower (1), one end of the liquid inlet two branch pipe (53) is communicated and installed with a primary spraying bin (6), the bottom of the primary spraying bin (6) is communicated and installed with a primary spraying head (61).

2. The high-efficiency desulfurization and denitrification composite dust removal device according to claim 1, characterized in that: One end of the liquid inlet one branch pipe (52) is installed with a secondary spraying bin (7), the bottom of the secondary spraying bin (7) is communicated and installed with a secondary spraying head (71).

3. The high-efficiency desulfurization and denitrification composite dust removal device according to claim 2, characterized in that: One side of the filter gas box (4) is communicated and installed with an air inlet guide pipe (41), the other side of the filter gas box (4) is communicated and installed with a gas delivery pipe (42), one side of the gas delivery pipe (42) is communicated and installed with a primary electromagnetic valve (43), the primary electromagnetic valve (43) is communicated and installed with a gas branch pipe (44), the gas branch pipe (44) is sealingly inserted into the inside of the removal tower (1).

4. The high-efficiency desulfurization and denitrification composite dust removal device according to claim 3, characterized in that: One end of the gas branch pipe (44) is communicated and installed with a gas spraying pipe (45), the bottom of the gas spraying pipe (45) is communicated and installed with a gas spraying head (46).

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