CN218688133U

CN218688133U - Device of media synergistic high-efficient circulation purification flue gas

Info

Publication number: CN218688133U
Application number: CN202222310267.3U
Authority: CN
Inventors: 张哲娟; 孙卓
Original assignee: Shanghai Nanoking Technology Co ltd; East China Normal University
Current assignee: Shanghai Nanoking Technology Co ltd; East China Normal University
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-03-24
Anticipated expiration: 2032-08-31

Abstract

The utility model belongs to the technical field of the mist purifies technique and specifically relates to a device of flue gas is purified in synergistic high-efficient circulation of hydrophily. The utility model provides a device of synergistic high-efficient circulation purification flue gas of hydrophily, includes the box, its characterized in that: the box upper end be equipped with the gas outlet, be located the box from last to being equipped with respectively down plasma purification chamber, spraying absorption chamber, photoelectric purification pond, plasma purification chamber upper portion is equipped with the one end of water pipe, the other end of water pipe is connected and is sprayed the absorption chamber, it is equipped with air inlet pipe to spray the absorption intracavity, is located the one end of connecting the inlet channel in the photoelectric purification pond, the other end of inlet channel is connected and is sprayed the absorption chamber. Compared with the prior art, purify the flue gas through three kinds of purification structure in plasma purification chamber, spraying absorption chamber, photoelectric purification pond, purification efficiency is high.

Description

Device of media synergistic high-efficient circulation purification flue gas

Technical Field

The utility model belongs to the technical field of the mist purifies technique and specifically relates to a device of flue gas is purified in synergistic high-efficient circulation of hydrophily.

Background

With the rapid development of urban roads, bridges and tunnels, asphalt smoke becomes one of important gas pollution sources at the edge of cities. Asphalt mixtures are indispensable in road, bridge and tunnel construction, and for reasons such as road life, the higher the number of kilometers and density of roads, the greater the demand, and the trend of presenting increases. Since the chemical characteristics of asphalt determine that the production and transportation distance cannot exceed 50-60 kilometers, the faster the urbanization develops, the larger the central urban area, and the more obvious the influence is.

At present, the dust removal technology is mature in the asphalt mixing production process, and the high-temperature plate and equipment can meet the purification requirement by matching with a fan. Aiming at the problem of bag pasting of cloth bags in the dust removal process, in the prior art, for example, CN 113457443A, a phenomenon of bag pasting of the dust removal bags is prevented and controlled by adopting photoelectrocatalysis synergistic electrolyte barrier plasma, so that the economic loss and the pollution discharge pressure of enterprises are reduced. However, because the technology uses high voltage of over +/-30 KV, the plasma generated by alternating high voltage has potential safety hazard for asphalt smoke with high dust content and containing organic gas, so that the technology cannot be reliably used in a mixing station in large quantity. Therefore, in order to effectively treat the pollution of dust, smoke and gas generated by mixing asphalt, more dust removing bags are directly installed on equipment to realize dust collection and recycling, and the smoke enters a treatment and absorption device through a collection pipeline in a centralized manner to realize purification.

The chemical composition of asphalt smoke is very complex, and the most important is particulate matter and volatilizationAnd compounds having an irritating odor such as organic compounds, sulfides, and nitrogen oxides. The prior art is CN202120559239.8; CN202121367420.5; CN202111293382.8 and CN202111268519.4, etc. all propose different absorption and adsorption methods, and the coking flue gas, particulate matters and SO in the waste gas are preferentially absorbed by liquid or solid materials ₂ NO and NO ₂ An isooxysulfide nitride. The adhesive gas molecules and inorganic gas molecules have large size and heavy weight, and can be effectively removed by the prior art. For organic volatile gas (TVOC) with small molecules, light weight and low concentration ratio, the purification efficiency of the prior art is not high. In addition, although the TVOC can be effectively removed by using adsorption methods such as activated carbon and the like, secondary pollution is easy to cause, the VOC concentration of flue gas cannot reach the lower limit of a combustion method, and if a combustion improver is used, the energy consumption is high, the safety is poor, and the cost performance is extremely low. Therefore, in recent years, in order to reduce the discharge of TVOC in the flue gas generated in the production of asphalt building materials, a novel photoelectric purification technology is adopted. For example, the CN202120559239.8 technology adopts a high-voltage 120KV pulse electrode to generate corona plasma, so as to achieve the goals of desulfurization, denitration and VOC decomposition. In the CN 202110764696.5 technology, a metal cage is used as an anode, alternating voltage of +/-35 KV is applied between a cathode and the anode to generate plasma to eliminate cohesive molecules and high-carbon organic matters in a paste bag, an electro-catalytic layer is coated on a metal woven cage net of the anode in a synergistic manner, and a composite catalyst is filled in the cathode to further degrade the organic matters in a synergistic manner, so that the purification effect is improved. In the patent CN202023068325.3, after insoluble substances are filtered by water, the flue gas is purified by using plasma electrolytic gas and then passing through an activated carbon adsorption plate, and the technology also has the problems of secondary pollution, low purification efficiency and the like.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides a device for purifying flue gas by water medium synergy and high-efficiency circulation.

In order to realize the above-mentioned purpose, design a device of synergistic high-efficient circulation purification flue gas of hydrophile, including the box, its characterized in that: the box upper end be equipped with the gas outlet, be located the box from last to being equipped with respectively down plasma purification chamber, spraying absorption chamber, photoelectric purification pond, plasma purification chamber upper portion is equipped with the one end of water pipe, the other end of water pipe is connected and is sprayed the absorption chamber, it is equipped with air inlet pipe to spray the absorption intracavity, is located the one end of connecting the inlet channel in the photoelectric purification pond, the other end of inlet channel is connected and is sprayed the absorption chamber.

The plasma purification cavity comprises a plasma generating pipe, a shell, a photoelectric catalyst filling plate and an axial flow fan, wherein the shell is arranged at the upper part in the box body, the photoelectric catalyst filling plate is arranged at the upper part in the shell, the plasma generating pipe is arranged at the lower side of the photoelectric catalyst filling plate, and the axial flow fan is arranged above the shell.

The plasma generating tube comprises a quartz tube, a first plasma electrode and a second plasma electrode, the first plasma electrode is arranged on the inner side of the quartz tube, the second plasma electrode is arranged on the outer side of the quartz tube, the first plasma electrode and the second plasma electrode are respectively connected with an alternating power supply through a first electrode lead, and the surfaces of the first plasma electrode and the second plasma electrode are coated with a photocatalytic film.

The axial fan top be equipped with the condensing panel, the condensing panel lower extreme is equipped with the cotton that absorbs water, the cotton surface that absorbs water is equipped with the hydrogel layer, the one end of water pipe is connected to hydrogel layer one side.

The spraying absorption cavity comprises a spraying pipeline, a spraying head and a packing partition plate, the packing partition plate is arranged above the air inlet pipeline, the spraying head is arranged above the packing partition plate, the spraying pipeline is connected to the upper end of the spraying head, a net-shaped partition plate is arranged above the spraying pipeline, a wedge-shaped plate I is arranged below the air inlet pipeline, and a water outlet is formed in one side of the wedge-shaped plate I.

One end of the spraying pipeline is positioned in the spraying absorption cavity, the other end of the spraying pipeline penetrates out of the box body and is divided into two pipelines, one pipeline is provided with a water replenishing port, the other pipeline is a water inlet pipeline, and a water pump is arranged on the water inlet pipeline.

Photoelectric purification pond in be equipped with the photoelectrocatalysis module, photoelectrocatalysis module top is equipped with the light source, photoelectrocatalysis module below is equipped with wedge board two, one side of wedge board two is equipped with the mud discharging mouth.

The photoelectrocatalysis module comprises a support, an anode plate and a cathode plate, wherein the anode plate and the cathode plate are arranged in the support at intervals, the lower parts of the anode plate and the cathode plate are connected with one end of an electrode lead II through an electrode clamping piece, the other end of the electrode lead II is connected with a constant current power supply, and a photoelectrocatalysis film is arranged on one side or two sides of the cathode plate.

And an absorption cover is arranged on one side of the air inlet pipeline.

The inner wall of the box body is provided with an electrode lead groove.

Compared with the prior art, the utility model, purify the flue gas through plasma purification chamber, spray three kinds of purification structure in absorption chamber, photoelectric purification pond, purification efficiency is high.

Drawings

Figure 1 shows the utility model schematic structural diagram of (1).

Fig. 2 is a schematic structural diagram of the plasma generating tube of the present invention.

Fig. 3 is a schematic structural diagram of the photoelectrocatalysis module of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the upper end of the box body 1 is provided with an air outlet 13, the box body is provided with a plasma purification cavity 23, a spraying absorption cavity 24 and a photoelectric purification pool 25 from top to bottom, the upper part of the plasma purification cavity 23 is provided with one end of a water pipe 12, the other end of the water pipe 12 is connected with the spraying absorption cavity 24, the spraying absorption cavity 24 is internally provided with an air inlet pipeline 4, the box body is positioned at one end of the photoelectric purification pool 25 connected with an inlet water pipeline 16, and the other end of the inlet water pipeline 16 is connected with the spraying absorption cavity 24.

The plasma purification cavity 23 comprises a plasma generating tube 7, a shell 9, a photoelectric catalyst filling plate 8 and an axial flow fan 10, wherein the shell 9 is arranged at the upper part in the box body 1, the photoelectric catalyst filling plate 8 is arranged at the upper part in the shell 9, the plasma generating tube 7 is arranged at the lower side of the photoelectric catalyst filling plate 8, and the axial flow fan 10 is arranged above the shell 9.

The plasma generating tube 7 comprises a quartz tube 7-2, a first plasma electrode 7-1 and a second plasma electrode 7-3, the first plasma electrode 7-1 is arranged on the inner side of the quartz tube 7-2, the second plasma electrode 7-3 is arranged on the outer side of the quartz tube 7-2, the first plasma electrode 7-1 and the second plasma electrode 7-3 are respectively connected with an alternating power supply through a first electrode lead 7-4, and photoelectric catalytic films are coated on the surfaces of the first plasma electrode 7-1 and the second plasma electrode 7-3.

A condensation plate 11 is arranged above the axial flow fan 10, water absorption cotton is arranged at the lower end of the condensation plate 11, a hydrogel layer is arranged on the surface of the water absorption cotton, and one side of the hydrogel layer is connected with one end of the water pipe 12.

The spraying absorption cavity 24 comprises a spraying pipeline 5, a spraying head 3 and a packing baffle plate 6, the packing baffle plate 6 is arranged above the air inlet pipeline 4, the spraying head 3 is arranged above the packing baffle plate 6, the spraying pipeline 5 is connected to the upper end of the spraying head 3, a net-shaped baffle plate 2 is arranged above the spraying pipeline 5, a wedge-shaped plate 26 is arranged below the air inlet pipeline 4, and a water outlet 14 is formed in one side of the wedge-shaped plate 26.

One end of the spraying pipeline 5 is positioned in the spraying absorption cavity, the other end of the spraying pipeline 5 penetrates out of the box body 1 and is divided into two pipelines, one pipeline is provided with a water replenishing port 19, the other pipeline is a water inlet pipeline 16, and the water inlet pipeline 16 is provided with a water pump 17.

Be equipped with photoelectrocatalysis module 15 in the photoelectrocatalysis pond 25, be equipped with light source 20 above photoelectrocatalysis module 15, photoelectrocatalysis module 15 below is equipped with two 27 wedge boards, and one side of two 27 wedge boards is equipped with row mud mouth 18.

The photoelectrocatalysis module 15 comprises a support 15-5, an anode plate 15-3 and a cathode plate 15-4, wherein a plurality of anode plates 15-3 and cathode plates 15-4 which are arranged at intervals are arranged in the support 15-5, the lower parts of the anode plates 15-3 and the cathode plates 15-4 are connected with one end of an electrode lead II 15-2 through an electrode clamping piece 15-1, the other end of the electrode lead II 15-2 is connected with a constant current power supply, and photoelectrocatalysis films are arranged on one side or two sides of the cathode plate 15-4.

The suction pipe 4 is provided with an absorbing cover 22 on one side.

The inner wall of the box body 1 is provided with an electrode lead groove.

One side of the air inlet pipeline 4 is positioned outside the box body and is connected with the absorption cover 1, and the other side of the air inlet pipeline 4 penetrates through the box body and is positioned in the water medium absorption cavity.

The utility model discloses in, spray absorption cavity 24 and be located box 1 middle part, the top is

netted baffle

2, and 2 fretwork rates of netted baffle are 60-75% to 2 surface adhesion or the packing of netted baffle are strong oxidation material. The upper part of the spraying absorption cavity 24 is provided with a plurality of spraying heads 3, two layers of filler partition plates 6 are arranged between the air inlet pipeline 4 and the spraying pipeline 5, and the filler partition plates 6 are filled with molecular sieve materials. After passing through the spraying absorption cavity, the flue gas is mixed with dust particles and soluble molecules in water, and is converged into the photoelectric purification tank 25 through the water outlet 14 under the drainage of the first wedge-shaped plate 26.

The plasma purifying chamber 23 is located at the upper portion of the chamber body 1. The plasma purification cavity 23 is internally provided with a plurality of plasma generating tubes 7, the plasma generating tubes 7 take quartz as a medium, the inner side and the outer side of each quartz tube are respectively provided with a first plasma electrode 7-1 and a second plasma electrode 7-3, and the surfaces of the first plasma electrode 7-1 and the second plasma electrode 7-3 are coated with a photoelectrocatalysis film. The plasma electrode I7-1 and the plasma electrode II 7-3 are made of aluminum oxide or aluminum mesh. After 0.7-3KV of alternating voltage is applied to the plasma generating tube 7, plasmas with different energy densities can be obtained.

A photocatalyst-filled plate 8 is attached to the upper end of the plasma generation tube 7. The plasma generating tube and the photocatalyst-filled plate 8 are fixed to a stainless steel case 9. An axial flow fan 10 is installed above the plasma purifying chamber 23. The gas purified by the water medium first-stage is mixed with small-size water gas, enters the stainless steel shell 9 under the action of the gas flow, can generate a mixture of ozone and oxygen-enriched active particles under the action of plasma under the water-containing condition, and has stronger purification capacity on organic gas molecules. In addition, the plasma action ionizes the gas, gas molecules can be polarized and adsorbed on the surface of an electrode under the action of an electric field and a photoelectric catalytic material, organic molecules are further decomposed under the action of oxygen-enriched active ions and strong oxidizing radicals generated under the photoelectric action, and finally the organic molecules are decomposed into water and carbon dioxide. The air flow reaches the condensation plate 11 under the action of the air flow, the porosity of the condensation plate is 70-80%, the surface of the condensation plate is paved with macroporous absorbent cotton, the surface of the macroporous absorbent cotton is coated with a zwitterionic hydrogel layer with the thickness of 1-2mm, the hydrogel layer can absorb water, and the water can flow into the water pipe 12 after reaching saturation and flow back to the spraying absorption cavity 24. The gas molecules passing through the plasma generating tube 7 have polarity and are easily dissolved in water, so that the organic gas molecules in the smoke are degraded or absorbed. The treated gas is finally discharged to the atmosphere through the gas outlet 13.

The recycled liquid generated by the spraying absorption cavity 24 and the plasma purification cavity 23 enters the photoelectric purification tank 25. The photoelectric purification cell 25 is distributed with a plurality of photoelectric catalysis modules 15, one side or two sides of the negative plate 15-4 are provided with photoelectric catalysis films, and the negative plate 15-4 is a transparent plate. The anode plate 15-3 is a metal plate. As shown in figure 3, the cathode plate 15-4 and the anode plate 15-3 are led out by the metal electrode clamping piece 15-1 and connected with the electrode lead wire II 15-2 at the bottom of the bracket 15-5, and voltage is applied by a constant current power supply. Strip light source 20 is installed at photoelectric purification pond 25 top, possesses waterproof function, and light shines downwards, realizes the advanced oxidation of photocatalysis in coordination with the electro-catalysis, reaches the effect of high-efficient degradation aquatic organic matter.

In addition, under the action of the metal plate, heavy metal ions can be reduced and separated out to form solid or precipitate or be adsorbed on the surface of the substrate, and can fall off and sink to the bottom of the tank after reaching a certain thickness; the salt ions may form a precipitate by processes such as electroflocculation. When the device is used specifically, the bottoms of the brackets 15-5 are arranged to be hollow structures, and solids and sediments can fall onto the second wedge-shaped plate 27 at the bottom of the photoelectric purification tank 25, so that the solids and sediments fall onto the sludge discharge port 18, and the box body 1 can be cleaned conveniently.

The upper liquid in the photoelectric purification tank 25 is clear, the lower solid content is high, and the supernatant flows back to the spray pipeline 5 through the water pump 17 and the water inlet pipeline 16, so that the water resource is recycled. Since water is lost during the circulation of the system, it can be replenished through the replenishment port 19.

When the power supply box is used specifically, an electric cabinet 21 is arranged on the outer side of the box body 1, and an alternating power supply device and a constant current power supply device are placed in the electric cabinet 21.

Claims

1. The utility model provides a device of synergistic high-efficient circulation purification flue gas of hydrophily, includes the box, its characterized in that: box (1) upper end be equipped with gas outlet (13), be located the box from last to being equipped with plasma purification chamber (23) respectively down, spray absorption chamber (24), photoelectric purification pond (25), plasma purification chamber (23) upper portion is equipped with the one end of water pipe (12), the other end of water pipe (12) is connected and is sprayed absorption chamber (24), be equipped with air inlet pipe way (4) in spraying absorption chamber (24), be located the one end of photoelectric purification pond (25) in-connection intake pipe (16), the other end of intake pipe (16) is connected and is sprayed absorption chamber (24).

2. The water-borne cooperative high-efficiency circulating flue gas purification device as claimed in claim 1, wherein: the plasma purification cavity (23) comprises a plasma generating tube (7), a shell (9), a photoelectric catalyst filling plate (8) and an axial flow fan (10), wherein the shell (9) is arranged at the upper part in the box body (1), the photoelectric catalyst filling plate (8) is arranged at the upper part in the shell (9), the plasma generating tube (7) is arranged at the lower side of the photoelectric catalyst filling plate (8), and the axial flow fan (10) is arranged above the shell (9).

3. The water medium cooperated high efficiency circulation flue gas purification device according to claim 2, characterized in that: the plasma generating tube (7) comprises a quartz tube (7-2), a first plasma electrode (7-1) and a second plasma electrode (7-3), the first plasma electrode (7-1) is arranged on the inner side of the quartz tube (7-2), the second plasma electrode (7-3) is arranged on the outer side of the quartz tube (7-2), the first plasma electrode (7-1) and the second plasma electrode (7-3) are respectively connected with an alternating power supply through a first electrode lead (7-4), and the surfaces of the first plasma electrode (7-1) and the second plasma electrode (7-3) are coated with a photoelectrocatalysis film.

4. The water medium cooperated high efficiency circulation flue gas purification device according to claim 2, characterized in that: axial fan (10) top be equipped with condensing panel (11), condensing panel (11) lower extreme is equipped with the cotton that absorbs water, the cotton surface that absorbs water is equipped with the hydrogel layer, the one end of water pipe (12) is connected to hydrogel layer one side.

5. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 1, wherein: the spraying absorption cavity (24) comprises a spraying pipeline (5), a spraying head (3) and a packing partition plate (6), the packing partition plate (6) is arranged above the air inlet pipeline (4), the spraying head (3) is arranged above the packing partition plate (6), the spraying pipeline (5) is connected to the upper end of the spraying head (3), a net-shaped partition plate (2) is arranged above the spraying pipeline (5), a wedge-shaped plate I (26) is arranged below the air inlet pipeline (4), and a water outlet (14) is formed in one side of the wedge-shaped plate I (26).

6. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 5, wherein: one end of the spraying pipeline (5) is positioned in the spraying absorption cavity, the other end of the spraying pipeline (5) penetrates out of the box body (1) and is divided into two pipelines, one pipeline is provided with a water replenishing opening (19), the other pipeline is a water inlet pipeline (16), and a water pump (17) is arranged on the water inlet pipeline (16).

7. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 1, wherein: photoelectric purification pond (25) in be equipped with photoelectrocatalysis module (15), photoelectrocatalysis module (15) top is equipped with light source (20), photoelectrocatalysis module (15) below is equipped with two (27) wedge boards, one side of two (27) wedge boards is equipped with row mud mouth (18).

8. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 7, wherein: the photoelectrocatalysis module (15) comprises a support (15-5), an anode plate (15-3) and a cathode plate (15-4), wherein the anode plate (15-3) and the cathode plate (15-4) are arranged in the support (15-5) at intervals, the lower parts of the anode plate (15-3) and the cathode plate (15-4) are connected with one end of an electrode lead II (15-2) through an electrode clamping piece (15-1), the other end of the electrode lead II (15-2) is connected with a constant current power supply, and a photoelectrocatalysis film is arranged on one side or two sides of the cathode plate (15-4).

9. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 1, wherein: an absorption cover (22) is arranged on one side of the air inlet pipeline (4).

10. The water-borne-cooperated high-efficiency circulating flue gas purification device as claimed in claim 1, wherein: the inner wall of the box body (1) is provided with an electrode lead groove.