Energy-saving and environment-friendly desulfurization and dust removal device

Abstract

The utility model provides an energy-saving and environment-friendly desulfurization and dust removal device, which belongs to the technical field of industrial flue gas treatment and comprises a gas inlet pipeline, a denitration and dust removal mechanism, a cooling and dehumidifying tower and a desulfurization tower, the bottom of the gas inlet pipeline is fixedly provided with the denitration and dust removal mechanism, and the right side of the denitration and dust removal mechanism is fixedly provided with the cooling and dehumidifying tower. A desulfurizing tower is fixedly installed on the right side of the cooling and dehumidifying tower, and a recycling mechanism is fixedly installed in the cooling and dehumidifying tower and comprises a first flow guide plate, a second flow guide plate, a third flow guide plate, a water return pump and a water return pipe. According to the utility model, the recycling mechanism is arranged in the cooling and dehumidifying tower, so that condensed water drops can be collected while denitrified and dedusted gas is condensed and dehumidified, and are re-injected into the dedusting tower for recycling under the action of the water return pump and the water return pipe, thereby not only reducing the consumption of water resources, but also reducing the energy consumption. And meanwhile, the concept of energy conservation and environmental protection is met, and wastewater discharge can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial flue gas treatment, and specifically relates to an energy-saving and environment-friendly desulfurization and dust removal device. Background Art

[0002] my country has abundant coal resources and is the main energy source in my country. However, the flue gas emitted by coal combustion contains sulfur oxides SOx (mainly including: SO2, SO3) and nitrogen oxides NOx (mainly including: NO, NO2, N2O3, N2O4, N2O5). Among them, SO2, NO and NO2 are the main components of air pollution and the main substances that form acid rain, which seriously pollute the environment and endanger the normal health and life of people and animals. When they fall to the ground with rain, they will not only destroy the pH value of the soil environment, but also seriously affect the growth of crops on the ground.

[0003] When the existing desulfurization and dust removal devices are in use, the structure of the water circulation is not perfect, which is not convenient for the recycling of water in the device, resulting in the generation of a large amount of wastewater and may cause secondary pollution to the environment. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving and environment-friendly desulfurization and dust removal device, aiming to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An energy-saving and environment-friendly desulfurization and dust removal device comprises: an air intake duct, a denitration and dust removal mechanism, a cooling and dehumidification tower and a desulfurization tower, wherein the denitration and dust removal mechanism is fixedly installed at the bottom of the air intake duct, the cooling and dehumidification tower is fixedly installed on the right side of the denitration and dust removal mechanism, the desulfurization tower is fixedly installed on the right side of the cooling and dehumidification tower, a recovery mechanism is fixedly installed inside the cooling and dehumidification tower, the recovery mechanism comprises a guide plate 1, a guide plate 2, a guide plate 3, a return water pump and a return water pipe, the guide plate 1 is movably installed on the right side wall of the inner cavity of the cooling and dehumidification tower, the guide plate 2 is movably installed on the left side wall of the inner cavity of the cooling and dehumidification tower, the guide plate 3 is fixedly installed on the right side wall of the cooling and dehumidification tower and is located at the bottom of the guide plate 1, the guide plate 1, the guide plate 2 and the guide plate 3 form a swirl channel inside the cooling and dehumidification tower to lengthen the cooling path, the return water pump is fixedly installed at the bottom of the cooling and dehumidification tower, and the return water pipe is fixedly installed at the bottom of the return water pump.

[0007] As a preferred solution of the utility model, the denitrification and dust removal mechanism is internally fixedly installed with a denitrification reaction tank, an air diffusion pipe, an ozone generator, an air diffusion hole, a stirring fan, a first connecting pipe, a dust removal tower, an annular spray pipe, a spray head, a water inlet pipe, a water inlet pump and a water storage tank, and the denitrification reaction tank is fixedly installed on the right side of the air inlet pipe.

[0008] As a preferred solution of the utility model, the air diffusion pipe is fixedly installed in the inner cavity of the denitration reaction tank and extends to the bottom, the ozone generator is fixedly installed at the bottom of the air diffusion pipe, and the air diffusion holes are opened in the portion of the air diffusion pipe located in the inner cavity of the denitration reaction tank.

[0009] As a preferred solution of the utility model, the stirring fan is fixedly installed on the right side of the air diffusion pipe, the first connecting pipe is fixedly installed on the bottom of the denitrification reaction tank, the dust removal tower is fixedly installed on the bottom of the first connecting pipe, the annular spray pipe is fixedly installed in the inner cavity of the dust removal tower, and several of the spray heads are respectively fixedly installed on the bottom of the annular spray pipe.

[0010] As a preferred solution of the utility model, one end of the water inlet pipe is fixedly installed on the right side of the annular spray pipe, the water inlet pump is fixedly installed on the other end of the water inlet pipe, the water storage tank is fixedly installed on the bottom of the water inlet pump, and the water storage tank is fixedly connected to one end of the return pipe.

[0011] As a preferred solution of the utility model, a plurality of partition mesh plates are fixedly installed in the inner cavity of the desulfurization tower, the middle parts of the plurality of partition mesh plates are filled with slaked lime blocks, and an air outlet pipe is fixedly installed on the top of the desulfurization tower.

[0012] As a preferred solution of the utility model, the cooling and dehumidification tower and the desulfurization tower are fixedly connected via a second connecting pipe, and the dust removal tower and the cooling and dehumidification tower are fixedly connected via a third connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This solution sets up a recovery mechanism inside the cooling and dehumidification tower, which can collect the condensed water droplets while condensing and dehumidifying the denitrification and dust removal gas, and re-inject them into the dust removal tower for reuse under the action of the return pump and return pipe. This not only reduces the consumption of water resources, but also complies with the concept of energy conservation and environmental protection, and can also reduce wastewater discharge and avoid secondary pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front view of the whole structure of the utility model;

[0019] Figure 3 It is a cross-sectional view of the cooling and dehumidification tower in the structure of the utility model;

[0020] Figure 4 It is a partial exploded view of the denitrification and dust removal mechanism in the structure of the utility model;

[0021] Figure 5 It is a cross-sectional view of the dust removal tower in the structure of the utility model;

[0022] Figure 6 It is a cross-sectional view of the desulfurization tower in the structure of the utility model.

[0023] In the figure: 1. air inlet duct; 2. denitrification and dust removal mechanism; 201. denitrification reaction tank; 202. air diffusion pipe; 203. ozone generator; 204. air diffusion hole; 205. stirring fan; 206. first connecting pipe; 207. dust removal tower; 208. annular spray pipe; 209. spray head; 2010. water inlet pipe; 2011. water inlet pump; 2012. water storage tank; 3. cooling and dehumidification tower; 4. desulfurization tower; 5. recovery mechanism; 501. guide plate one; 502. guide plate two; 503. guide plate three; 504. return water pump; 505. return water pipe; 6. partition mesh plate; 7. slaked lime block; 8. air outlet duct; 9. second connecting pipe; 10. third connecting pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] Example

[0026] like Figures 1 to 4As shown, the utility model provides an energy-saving and environmentally friendly desulfurization and dust removal device, comprising: an air intake pipe 1, a denitration and dust removal mechanism 2, a cooling and dehumidification tower 3 and a desulfurization tower 4, the denitration and dust removal mechanism 2 is fixedly installed at the bottom of the air intake pipe 1, the cooling and dehumidification tower 3 is fixedly installed on the right side of the denitration and dust removal mechanism 2, the desulfurization tower 4 is fixedly installed on the right side of the cooling and dehumidification tower 3, and a recovery mechanism 5 is fixedly installed inside the cooling and dehumidification tower 3, and the recovery mechanism 5 includes a guide plate 1 501, a guide plate 2 502, a guide plate 3 503, a return water pump 504 and a return water pipe 5 05, guide plate 1 501 is movably installed on the right side wall of the inner cavity of the cooling and dehumidification tower 3, guide plate 2 502 is movably installed on the left side wall of the inner cavity of the cooling and dehumidification tower 3, guide plate 3 503 is fixedly installed on the right side wall of the cooling and dehumidification tower 3 and is located at the bottom of guide plate 1 501, guide plate 1 501, guide plate 2 502 and guide plate 3 503 form a swirl channel inside the cooling and dehumidification tower 3 to lengthen the cooling path, return water pump 504 is fixedly installed at the bottom of the cooling and dehumidification tower 3, and return water pipe 505 is fixedly installed at the bottom of the return water pump 504.

[0027] refer to Figure 2 and Figure 5 The denitration and dust removal mechanism 2 is internally fixedly installed with a denitration reaction tank 201, a diffuser pipe 202, an ozone generator 203, a diffuser hole 204, a stirring fan 205, a first connecting pipe 206, a dust removal tower 207, an annular spray pipe 208, a spray head 209, a water inlet pipe 2010, a water inlet pump 2011 and a water storage tank 2012. The denitration reaction tank 201 is fixedly installed on the right side of the air inlet pipe 1, and the diffuser pipe 202 is fixedly installed in the inner cavity of the denitration reaction tank 201 and extends to the bottom. The ozone generator 203 is fixedly installed at the bottom of the air diffusion pipe 202, the air diffusion hole 204 is opened in the part of the air diffusion pipe 202 located in the inner cavity of the denitration reaction tank 201, the stirring fan 205 is fixedly installed on the right side of the air diffusion pipe 202, the first connecting pipe 206 is fixedly installed at the bottom of the denitration reaction tank 201, the dust removal tower 207 is fixedly installed at the bottom of the first connecting pipe 206, the annular spray pipe 208 is fixedly installed in the inner cavity of the dust removal tower 207, and a plurality of spray heads 209 are respectively fixedly installed at the bottom of the annular spray pipe 208.

[0028] The above scheme is adopted: ozone is generated by the ozone generator 203, and then injected into the denitration reaction tank 201 through the diffusion hole 204 using the diffusion pipe 202, and chemically reacts with the smoke in the denitration reaction tank 201. The rotation of the stirring fan 205 can accelerate the mixing of the gases and pressurize the intake air at the same time.

[0029] refer to Figure 5One end of the water inlet pipe 2010 is fixedly installed on the right side of the annular spray pipe 208, the water inlet pump 2011 is fixedly installed on the other end of the water inlet pipe 2010, the water storage tank 2012 is fixedly installed at the bottom of the water inlet pump 2011, the water storage tank 2012 is fixedly connected to one end of the return pipe 505, the inner cavity of the desulfurization tower 4 is fixedly installed with a plurality of partition mesh plates 6, the middle parts of the plurality of partition mesh plates 6 are filled with slaked lime blocks 7, the top of the desulfurization tower 4 is fixedly installed with an outlet pipe 8, the cooling and dehumidification tower 3 and the desulfurization tower 4 are fixedly connected by a second connecting pipe 9, and the dust removal tower 207 and the cooling and dehumidification tower 3 are fixedly connected by a third connecting pipe 10.

[0030] The above scheme is adopted: the sulfur-containing gas that has been cooled and dehumidified enters the desulfurization tower 4 through the second connecting pipe 9, and the sulfur-containing gas undergoes a neutralization reaction with the alkaline slaked lime block 7 in the desulfurization tower 4. This process can reduce the sulfur content in the sulfur-containing gas to a level that meets environmental protection requirements.

[0031] Working principle: When the device is in use, first, industrial flue gas enters the denitration reaction tank 201 from the air intake pipe 1, and the ozone generator 203 generates ozone and then injects it into the denitration reaction tank 201 through the diffuser pipe 202. In the denitration reaction tank 201, it reacts with the nitrogen monoxide in the flue gas to generate nitrogen dioxide and oxygen. The ozone reacts with the nitrogen dioxide to generate nitrate and oxygen. The nitrogen dioxide and nitrate react to generate nitrogen pentoxide. At the same time, the stirring fan 205 is started to accelerate the mixing of the gases. The reacted gas is injected into the dust removal tower 207, and water is sprayed through the spray head 209. The pentoxide Dinitrogen reacts with water to generate nitric acid, and water absorbs the dust particles in the smoke and drops them into the water tank 2012. The flocculant added to the water tank 2012 can flocculate and settle harmful substances and neutralize the acid and alkali. The gas after denitrification and dust removal enters the cooling and dehumidification tower 3 for condensation and dehumidification, and water droplets gather at the bottom of the cooling and dehumidification tower 3. Under the action of the return pump 504, it is re-injected into the dust removal tower 207 for reuse. The gas after cooling and dehumidification is injected into the desulfurization tower 4 from the second connecting pipe 9, reacts with the slaked lime block 7 in the desulfurization tower 4, and is discharged from the outlet pipe 8 after removing the sulfide.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An energy-saving and environmentally friendly desulfurization and dust removal device, characterized in that: include: An air intake pipe (1), a denitration and dust removal mechanism (2), a cooling and dehumidifying tower (3) and a desulfurization tower (4), wherein the denitration and dust removal mechanism (2) is fixedly installed at the bottom of the air intake pipe (1), the cooling and dehumidifying tower (3) is fixedly installed on the right side of the denitration and dust removal mechanism (2), the desulfurization tower (4) is fixedly installed on the right side of the cooling and dehumidifying tower (3), and a recovery mechanism (5) is fixedly installed inside the cooling and dehumidification tower (3), wherein the recovery mechanism (5) comprises a guide plate 1 (501), a guide plate 2 (502), a guide plate 3 (503), a return water pump (504) and a return water pipe (505), wherein the guide plate 1 (50 1) is movably mounted on the right side wall of the inner cavity of the cooling and dehumidifying tower (3), the guide plate 2 (502) is movably mounted on the left side wall of the inner cavity of the cooling and dehumidifying tower (3), the guide plate 3 (503) is fixedly mounted on the right side wall of the cooling and dehumidifying tower (3) and is located at the bottom of the guide plate 1 (501), the guide plate 1 (501), the guide plate 2 (502) and the guide plate 3 (503) form a swirl channel inside the cooling and dehumidifying tower (3) to lengthen the cooling path, the return water pump (504) is fixedly mounted at the bottom of the cooling and dehumidifying tower (3), and the return water pipe (505) is fixedly mounted at the bottom of the return water pump (504).

2. The energy-saving and environmentally friendly desulfurization and dust removal device according to claim 1 is characterized in that: The denitration and dust removal mechanism (2) is internally fixedly installed with a denitration reaction tank (201), an air diffusion pipe (202), an ozone generator (203), an air diffusion hole (204), a stirring fan (205), a first connecting pipe (206), a dust removal tower (207), an annular spray pipe (208), a spray head (209), a water inlet pipe (2010), a water inlet pump (2011) and a water storage tank (2012); the denitration reaction tank (201) is fixedly installed on the right side of the air inlet pipe (1).

3. The energy-saving and environment-friendly desulfurization and dust removal device according to claim 2 is characterized in that: The air diffusion pipe (202) is fixedly installed in the inner cavity of the denitration reaction tank (201) and extends to the bottom, the ozone generator (203) is fixedly installed at the bottom of the air diffusion pipe (202), and the air diffusion hole (204) is provided at a portion of the air diffusion pipe (202) located in the inner cavity of the denitration reaction tank (201).

4. The energy-saving and environment-friendly desulfurization and dust removal device according to claim 2 is characterized in that: The stirring fan (205) is fixedly installed on the right side of the diffuser pipe (202), the first connecting pipe (206) is fixedly installed at the bottom of the denitration reaction tank (201), the dust removal tower (207) is fixedly installed at the bottom of the first connecting pipe (206), the annular spray pipe (208) is fixedly installed in the inner cavity of the dust removal tower (207), and a plurality of the spray heads (209) are respectively fixedly installed at the bottom of the annular spray pipe (208).

5. The energy-saving and environment-friendly desulfurization and dust removal device according to claim 2 is characterized in that: One end of the water inlet pipe (2010) is fixedly mounted on the right side of the annular spray pipe (208), the water inlet pump (2011) is fixedly mounted on the other end of the water inlet pipe (2010), the water storage tank (2012) is fixedly mounted on the bottom of the water inlet pump (2011), and the water storage tank (2012) is fixedly connected to one end of the return pipe (505).

6. The energy-saving and environment-friendly desulfurization and dust removal device according to claim 1 is characterized in that: A plurality of partition mesh plates (6) are fixedly installed in the inner cavity of the desulfurization tower (4), and the middle parts of the plurality of partition mesh plates (6) are filled with slaked lime blocks (7). An air outlet pipe (8) is fixedly installed on the top of the desulfurization tower (4).

7. The energy-saving and environment-friendly desulfurization and dust removal device according to claim 2 is characterized in that: The cooling and dehumidifying tower (3) and the desulfurization tower (4) are fixedly connected via a second connecting pipe (9), and the dust removal tower (207) and the cooling and dehumidifying tower (3) are fixedly connected via a third connecting pipe (10).

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