Flue gas low-temperature denitration treatment device

Abstract

The utility model discloses a flue gas low-temperature denitration treatment device which comprises a dust removal tank, a base is arranged below the dust removal tank, the dust removal tank is connected with the base through four supporting columns, and the lower end of the dust removal tank is fixedly connected with a blow-down valve communicated with the interior of the dust removal tank. A first gas pipe communicated with the interior is fixedly connected to the side wall of one side of the dust removal tank, a spraying assembly communicated with the interior of the dust removal tank is arranged at the upper end of the dust removal tank, a second gas pipe communicated with the interior of the dust removal tank is arranged on the side, away from the first gas pipe, of the dust removal tank, and a denitration assembly is connected to the end, away from the dust removal tank, of the second gas pipe; and the dust removal tank is filled with dust removal liquid. The flue gas treatment device has the advantages that dust and nitrogen oxide in flue gas are efficiently removed, the emission quality is optimized, and the environmental friendliness and the treatment efficiency are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a flue gas low-temperature denitration treatment device. Background Art

[0002] Flue gas treatment is an indispensable part of the industrial and energy production process, and its main purpose is to reduce pollutant emissions and protect the environment and human health. Flue gas contains a variety of harmful substances, including particulate matter, sulfur oxides, nitrogen oxides, heavy metals, volatile organic compounds, etc.

[0003] The existing Chinese patent with publication number CN212396184U and name is a low-temperature flue gas desulfurization and denitrification integrated device. The low-temperature flue gas desulfurization and denitrification integrated device includes a desulfurization tank and a denitrification tank, and is characterized in that: dust removal liquid is placed in the desulfurization tank, an ash box is fixedly installed on the outer surface of one side of the desulfurization tank, a fixed block is fixedly installed on the inner wall of one side of the ash box, a second slider is provided on the fixed block, a second filter is fixedly installed on the second slider, an air intake pipe is fixedly installed on the outer surface of one side of the ash box, the air intake pipe is communicated with the interior of the ash box, a ventilation pipe is fixedly installed on the top of the ash box, the ventilation pipe is communicated with the interior of the ash box, the other end of the ventilation pipe is fixedly connected to the top of the desulfurization tank, and a through pipe is fixedly installed on the inner wall of one side of the desulfurization tank. This patent utilizes dust removal liquid for adsorption filtration. Due to the limitation of the tank shape, it is impossible to remove the residual dirt inside, which will affect the quality of the dust removal liquid placed in the tank next time and the processing efficiency. At the same time, the gas will gather into bubbles in the liquid, which will prevent the gas inside the bubbles from contacting the liquid, affecting the filtration quality. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a flue gas low-temperature denitration treatment device.

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

[0006] The vent pipe is connected to the bottom of the dust collector, and the vent pipe is connected to the bottom of the dust collector through four support columns. The lower end of the dust collector is fixedly connected to a drain valve connected to the interior. A first air pipe connected to the interior is fixedly connected to a side wall of one side of the dust collector. The upper end of the dust collector is provided with a spray assembly connected to the interior of the dust collector. A second air pipe connected to the interior of the dust collector is provided on the side of the dust collector away from the first air pipe. The end of the second air pipe away from the dust collector is connected to the denitrification assembly. The dust collector is filled with dust removal liquid. The spray assembly includes a water pump fixed to the upper end of the dust collector, the output end of the water pump is connected to a water outlet pipe, the end of the water outlet pipe away from the water pump passes through the upper side wall of the dust collector and extends to the interior. The inner top of the dust collector is fixedly connected to a spray assembly The denitrification tank is provided with a plurality of air pipes, each of which is connected to a plurality of air pumps, each of which is connected to a plurality of air pumps, each of which is connected to a plurality of air pumps. The denitrification tank is provided with a plurality of air pipes, each of which is connected to a plurality of air pumps. The denitrification tank is provided with a plurality of air pipes, each of which is connected to a plurality of air pumps. The denitrification tank is provided with a plurality of air pipes, each of which is connected to a plurality of air pumps.

[0007] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: a second liquid inlet communicating with the interior of the dust removal tank is provided on the side wall of the dust removal tank.

[0008] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the lower end of the sprayer is connected with a plurality of water outlets communicated with the interior thereof.

[0009] The advantages of the utility model are: by setting a spraying component, a dust removal tank, and a drain valve, the dust removal liquid is pumped out from the dust removal tank by a water pump, the dust removal liquid is pumped into the sprayer through the water outlet pipe, and then the dust removal liquid is sprayed out from the multiple water outlets on the sprayer, so that the dust removal liquid and the flue gas are in maximum contact, the dust removal effect is improved, the dirt in the flue gas will settle at the bottom of the dust removal tank, and the dust removal liquid and the dirt can be discharged together by opening the drain valve. At the same time, due to the conical structure of the dust removal tank, the dirt is easier to discharge, avoiding affecting the quality of the dust removal liquid placed next time, and improving the processing efficiency. By setting a denitrification component, the flue gas after dust reduction is pumped into the denitrification box from the second air pipe by starting the air pump, the nitrate in the flue gas is removed by the reaction liquid in the denitrification box, and the flue gas after denitrification is pumped out from the air outlet, which can improve the efficiency of flue gas treatment, reduce environmental pollution, and achieve clean emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural schematic diagram of a flue gas low-temperature denitration treatment device proposed by the utility model;

[0011] Figure 2 This is a schematic structural diagram of a flue gas low-temperature denitration treatment device proposed by the utility model from a front view perspective;

[0012] Figure 3 This is a structural schematic diagram of the connection between a sprinkler and a water outlet of a flue gas low-temperature denitration treatment device proposed by the utility model.

[0013] In the figure: 1 dust removal tank, 2 support column, 3 drain valve, 4 first air pipe, 5 base, 6 water pump, 7 water outlet pipe, 8 water inlet pipe, 9 second air pipe, 10 dust removal liquid, 11 first liquid inlet, 12 denitrification box, 13 air pump, 14 liquid outlet, 15 air outlet, 16 sprayer, 17 second liquid inlet, 18 reaction liquid, 19 support plate, 20 water outlet. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0015] Figure 1-Figure 3As shown, a low-temperature denitration treatment device for flue gas comprises a dust removal tank 1, the lower end of the dust removal tank 1 is a conical structure, a second liquid inlet 17 connected to the interior of the dust removal tank 1 is provided on the side wall of the dust removal tank 1, dust removal liquid 10 is filled in the dust removal tank 1, the second liquid inlet 17 is used for the entry of the dust removal liquid 10, a base 5 is provided below the dust removal tank 1, the dust removal tank 1 is connected to the base 5 through four support columns 2, the four support columns 2 are fixedly connected to the lower side wall of the dust removal tank 1, the lower end of the dust removal tank 1 is fixedly connected to a drain valve 3 connected to the interior, the drain valve 3 is used to discharge the dust removal liquid 10 and dirt, and a drain valve 3 is fixedly connected to the side wall of one side of the dust removal tank 1. There is a first air pipe 4 connected with the interior, the first air pipe 4 is used for the smoke to enter the dust removal tank 1, the upper end of the dust removal tank 1 is provided with a spraying assembly connected with the interior of the dust removal tank 1, the spraying assembly includes a water pump 6 fixed at the upper end of the dust removal tank 1, the water pump 6 is used to extract the dust removal liquid 10 inside the dust removal tank 1, the output end of the water pump 6 is connected with a water outlet pipe 7, the end of the water outlet pipe 7 away from the water pump 6 passes through the upper end side wall of the dust removal tank 1 and extends to the interior, the inner top of the dust removal tank 1 is fixedly connected with a sprayer 16, the lower end of the sprayer 16 is connected with a plurality of water outlets 20 connected with the interior thereof, the water outlet 20 will spray the dust removal liquid 10 in a mist form Sprinkle out, the end of the water outlet pipe 7 extending to the inside of the dust removal tank 1 is connected to the sprayer 16, the input end of the water pump 6 is connected to the water inlet pipe 8, the end of the water inlet pipe 8 away from the water pump 6 penetrates the lower end side wall of the dust removal tank 1 and extends to the inside, the side of the dust removal tank 1 away from the first air pipe 4 is provided with a second air pipe 9 connected to the inside of the dust removal tank 1, the end of the second air pipe 9 away from the dust removal tank 1 is connected to a denitration component, the denitration component includes a denitration box 12 fixedly arranged on one side of the dust removal tank 1, the end of the second air pipe 9 away from the dust removal tank 1 penetrates the denitration box 12 and extends to the inside, the denitration box 12 is filled with a reaction liquid 18, and the reaction liquid 18 is ammonia water, Reacts with nitrogen oxides (NOx) in the flue gas to convert them into nitrogen (N2) and water (H2O). A first liquid inlet 11 connected to the interior of the denitrification box 12 is installed at the upper end thereof, a liquid outlet 14 connected to the interior thereof is installed on the side wall of the denitrification box 12, an exhaust mechanism is connected to the side of the denitrification box 12 away from the second air pipe 9, the exhaust mechanism includes a support plate 19 fixedly connected to the side wall of the denitrification box 12, an air pump 13 is installed on the support plate 19, the support plate 19 is used to assist the installation of the air pump 13, the input end of the air pump 13 is connected to the interior of the denitrification box 12, and the output end of the air pump 13 is connected to the outlet 15.

[0016] When the utility model is used, a worker connects the flue gas outlet to the first air pipe 4, then fills the dust removal liquid 10 into the dust removal tank 1 through the second liquid inlet 17, and at the same time fills the reaction liquid 18 into the denitration box 12 through the first liquid inlet 11, and then starts the air pump 13, so that the flue gas is drawn from the first air pipe 4 into the dust removal tank 1 to react preliminarily with the dust removal liquid 10 and gather above the inside of the dust removal tank 1, and then starts the water pump 6, and the dust removal liquid 10 is drawn out of the dust removal tank 1 through the water pump 6, and then the dust removal liquid 10 is drawn out of the dust removal tank 1 through the water outlet pipe 7. The dust removal liquid 10 is pumped into the sprayer 16, and then the dust removal liquid 10 is sprayed out from the multiple water outlets 20 on the sprayer 16, so that the dust removal liquid 10 and the accumulated flue gas are in maximum contact, and the dirt in the flue gas will settle at the bottom of the dust removal tank 1, and the dust removal liquid 10 and the dirt can be discharged together by opening the drain valve 3. The flue gas after dust settling is then pumped into the denitrification box 12 through the second air pipe 9, and the nitrate in the flue gas is removed by the reaction liquid 18 in the denitrification box 12. The flue gas after denitrification is then pumped out from the outlet 15.

Claims

1. A flue gas low-temperature denitration treatment device, comprising a dust removal tank (1), characterized in that: A base (5) is provided below the dust removal tank (1), and the dust removal tank (1) is connected to the base (5) via four support columns (2). A sewage discharge valve (3) communicating with the interior is fixedly connected to the lower end of the dust removal tank (1), and a first air pipe (4) communicating with the interior is fixedly connected to a side wall of one side of the dust removal tank (1). A spray assembly communicating with the interior of the dust removal tank (1) is provided at the upper end of the dust removal tank (1), and a second air pipe (4) communicating with the interior of the dust removal tank (1) is provided on a side of the dust removal tank (1) away from the first air pipe (4). 9), the end of the second air pipe (9) away from the dust removal tank (1) is connected to a denitration assembly, the dust removal tank (1) is filled with dust removal liquid (10), the spray assembly comprises a water pump (6) fixed to the upper end of the dust removal tank (1), the output end of the water pump (6) is connected to a water outlet pipe (7), the end of the water outlet pipe (7) away from the water pump (6) penetrates the upper end side wall of the dust removal tank (1) and extends to the inside, the inner top of the dust removal tank (1) is fixedly connected to a sprayer (16), and the water outlet pipe (7) extends to the dust removal tank (1) ) is connected to the sprayer (16), the input end of the water pump (6) is connected to the water inlet pipe (8), the end of the water inlet pipe (8) away from the water pump (6) penetrates the lower end side wall of the dust removal tank (1) and extends to the inside, the denitration assembly includes a denitration box (12) fixedly arranged on one side of the dust removal tank (1), the end of the second air pipe (9) away from the dust removal tank (1) penetrates the denitration box (12) and extends to the inside, the denitration box (12) is filled with a reaction liquid (18), and the upper end of the denitration box (12) is installed A first liquid inlet (11) is provided which is in communication with the interior of the denitration box (12); a liquid outlet (14) which is in communication with the interior of the denitration box (12) is installed on the side wall of the denitration box (12); a gas extraction mechanism is connected to the side of the denitration box (12) away from the second gas pipe (9); the gas extraction mechanism comprises a support plate (19) which is fixedly connected to the side wall of the denitration box (12); an air pump (13) is installed on the support plate (19); an input end of the air pump (13) is in communication with the interior of the denitration box (12); and an output end of the air pump (13) is in communication with the outlet (15).

2. A flue gas low-temperature denitration treatment device according to claim 1, characterized in that: A second liquid inlet (17) communicating with the interior of the dust removal tank (1) is provided on the side wall of the dust removal tank (1).

3. A flue gas low-temperature denitration treatment device according to claim 2, characterized in that: The lower end of the sprayer (16) is connected to a plurality of water outlets (20) which are in communication with the interior thereof.

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