A cement kiln flue gas treatment device

Abstract

This utility model relates to the field of flue gas treatment technology and discloses a flue gas treatment device for cement kilns. It includes a support frame leg, with a flue gas treatment shell fixedly installed on the top of the support frame leg. A support pipe frame is fixedly installed on one side of the outer wall of the flue gas treatment shell. A conveying pump with a lime water storage tank delivers lime water through a conveying pipe, which is then split into two paths. One path, via a connecting pipe and a dispersing connecting pipe, is sprayed out in a conical shape from a spray head. The lime water neutralizes residual acidic gases in the flue gas. Subsequently, the flue gas passes through a second adsorption layer to adsorb fine particles, improving its cleanliness. The other path, via a connecting sleeve, a second connecting pipe, and a dispersing connecting pipe, is sprayed from a spray head for secondary deep purification of the flue gas. Then, the flue gas enters a collection bag, where a vibrating block promptly shakes off dust from the inner wall of the filter bag, preventing blockage and improving ventilation efficiency, thus achieving the effect of improving treatment quality.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to a flue gas treatment device for cement kilns. Background Technology

[0002] The cement industry, as a crucial foundation of national economic development, occupies a pivotal position globally. With accelerated urbanization and continuous infrastructure construction, the demand for cement continues to rise, leading to a surge in the scale and number of cement kilns. However, the cement production process, especially the calcination stage in cement kilns, generates substantial amounts of flue gas emissions. These flue gases are complex in composition, containing various pollutants, and causing serious negative impacts on the environment.

[0003] Traditional cement kiln flue gas treatment mainly employs single desulfurization or denitrification technologies. For example, limestone-gypsum wet desulfurization is a common method, where limestone slurry reacts chemically with sulfur dioxide in the flue gas to produce gypsum as a byproduct, thus achieving desulfurization. However, this technology only treats sulfur dioxide and cannot effectively remove other pollutants such as nitrogen oxides and particulate matter from the flue gas. Similarly, while selective catalytic reduction (SCR) denitrification can effectively reduce nitrogen oxide emissions, it is ineffective against sulfur dioxide and particulate matter. Single treatment methods cannot comprehensively solve the pollution problem of cement kiln flue gas, resulting in emissions still containing multiple pollutants and causing continuous harm to the atmospheric environment. Therefore, a new cement kiln flue gas treatment device needs to be designed. Utility Model Content

[0004] The purpose of this invention is to provide a cement kiln flue gas treatment device that solves the technical problems of low removal efficiency of harmful substances in flue gas and insufficient flue gas treatment, thereby improving the treatment quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cement kiln flue gas treatment device, comprising a support frame leg, a flue gas treatment shell fixedly installed on the top of the support frame leg, a support pipe frame one fixedly installed on one side outer wall of the flue gas treatment shell, a support pipe frame two fixedly installed on the other side outer wall of the flue gas treatment shell, and the support pipe frame two being located below the support pipe frame one; a control console is provided in front of the flue gas treatment shell; a flue gas inlet pipe is connected to one side outer wall of the flue gas treatment shell, and the flue gas inlet pipe is fixedly installed on the top of the support pipe frame one; a water outlet pipe is connected to the bottom of the flue gas treatment shell, and a recovery filter box is provided below the water outlet pipe; a flue gas filtration assembly, the flue gas filtration assembly being located inside and outside the flue gas treatment shell; the flue gas filtration assembly comprising: a treatment part one, the treatment part one being located outside the flue gas treatment shell; and a treatment part two, the treatment part two being located inside and outside the flue gas treatment shell, and the treatment part two being located below the treatment part one.

[0006] Preferably, the first treatment unit includes: an ammonia storage tank, which is located behind the first supporting pipe frame and fixedly installed on the outer wall of the flue gas treatment shell; a supplementary connecting pipe is connected to the top of the ammonia storage tank; a first conveying pump is installed inside the ammonia storage tank; a first conveying pipe is connected to the connection port of the first conveying pump; the first conveying pipe movably passes through the top of the ammonia storage tank and extends into the interior of the flue gas inlet pipe; a sealing ring is fitted on the outer wall of the first conveying pipe and is located at the top of the flue gas inlet pipe.

[0007] Preferably, a transverse spray pipe is connected to the bottom of the first conveying pipe, and the transverse spray pipe is fixedly installed on the inner wall of the flue gas inlet pipe. Spray holes are evenly spaced at the bottom of the transverse spray pipe. A first filter adsorption layer is provided below the transverse spray pipe, and the first filter adsorption layer is evenly spaced and fixedly installed on the inner wall of the flue gas treatment shell, located below the flue gas inlet pipe.

[0008] Preferably, the second treatment section includes: a lime water storage tank, which is located on one side of the support leg; a second conveying pump is installed inside the lime water storage tank, and a second conveying pipe is connected to the connection port of the second conveying pump. The second conveying pipe extends through the top of the lime water storage tank, and a connecting pipe is connected to the top of the second conveying pipe. The connecting pipe extends through the outer wall of the flue gas treatment shell and into the interior of the flue gas treatment shell.

[0009] Preferably, a support ring is fixedly installed at the other end of the connecting pipe, and the support ring is fixedly installed on the inner wall of the other side of the flue gas treatment shell. A first dispersive connecting pipe is uniformly and evenly connected at the bottom of the connecting pipe, and a first spray head is uniformly and evenly connected at the bottom of the first dispersive connecting pipe. A second adsorption layer is provided below the first spray head, and the second adsorption layer is uniformly and evenly fixedly installed on the inner wall of the flue gas treatment shell.

[0010] Preferably, a connecting sleeve is provided below the second adsorption layer, and the connecting sleeve is connected to the outer wall of the second conveying pipe. A second connecting pipe is connected to the outer wall of the connecting sleeve, and the second connecting pipe movably penetrates the outer wall of the flue gas treatment shell and extends into the interior of the flue gas treatment shell. A second dispersive connecting pipe is uniformly connected to the bottom of the second connecting pipe at equal intervals, and a second spray head is uniformly connected to the bottom of the second dispersive connecting pipe at equal intervals.

[0011] Preferably, a collection bag is provided below the second spray head, and a vibration block is provided on the outer wall of the collection bag. The vibration block is fixedly installed on the inner wall of the flue gas treatment shell. A smoke exhaust connecting pipe is provided on one side of the outer wall of the collection bag. The smoke exhaust connecting pipe movably passes through the outer wall of the flue gas treatment shell and extends to the bottom of the second support pipe frame for fixed connection. The bottom of the collection bag is connected to the water outlet pipe through a sewage outlet pipe.

[0012] This utility model provides a cement kiln flue gas treatment device. It has the following beneficial effects:

[0013] (1) This utility model uses a pump in an ammonia storage tank to deliver ammonia through a delivery pipe to a horizontal spray pipe in the flue gas inlet. The ammonia is sprayed out in a mist form through the uniformly spaced spray holes at the bottom, which fully contacts the high-temperature flue gas. At the same time, the mist spray liquid can adsorb fine dust, achieving the dual effect of "acid neutralization + preliminary dust reduction". This avoids high-concentration acid gas from directly entering the subsequent process and corroding the equipment. In conjunction with the first filter adsorption layer adsorbing some organic pollutants, the concentration of harmful components in the flue gas after preliminary purification is significantly reduced, thereby improving the treatment quality of the device.

[0014] (2) This utility model uses a conveying pump with a lime water storage tank to deliver lime water through a conveying pipe to two separate paths. One path is sprayed out in a cone shape from a spray head through a connecting pipe and a dispersing connecting pipe. The lime water can neutralize the acidic gases remaining in the flue gas. Then, the flue gas passes through the second adsorption layer to adsorb tiny particles and improve the cleanliness. The other path is sprayed from a spray head through a connecting sleeve, a second connecting pipe, and a dispersing connecting pipe to perform secondary deep purification of the flue gas. Then, the flue gas enters the collection bag, and the vibration block shakes off the dust on the inner wall of the filter bag in time to avoid blockage and affect ventilation efficiency, thereby improving the treatment quality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of a cement kiln flue gas treatment device according to the present invention.

[0017] Figure 3 This is a top view of the disassembled structure of a cement kiln flue gas treatment device according to the present invention.

[0018] Figure 4 This is a side view of the spray section structure of a cement kiln flue gas treatment device according to the present invention.

[0019] In the diagram: 1. Support leg; 2. Flue gas treatment shell; 21. Support pipe frame one; 22. Support pipe frame two; 3. Control console; 4. Flue gas inlet pipe; 5. Water outlet pipe; 51. Recovery filter box; 6. Flue gas filter assembly; 61. Treatment section one; 611. Ammonia storage tank; 612. Conveyor pump one; 613. Conveyor pipe one; 614. Horizontal spray pipe; 615. Spray hole; 616. First filter adsorption layer; 62. Treatment section two; 621. Lime water storage tank; 622. Conveyor pump two; 623. Conveyor pipe two; 624. Connecting pipe; 625. Support ring; 626. Dispersive connecting pipe one; 627. Spray head one; 628. Second adsorption layer; 629. Connecting sleeve; 6210. Second connecting pipe; 6211. Dispersive connecting pipe two; 6212. Spray head two; 6213. Collection bag; 6214. Vibration block; 6215. Exhaust connection pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] Example 1:

[0023] Based on the current problems of low removal efficiency of harmful substances in flue gas and insufficient flue gas treatment, a preferred embodiment of the cement kiln flue gas treatment device provided by this utility model is as follows: Figure 1-4As shown: A cement kiln flue gas treatment device includes a support leg 1, a flue gas treatment shell 2 fixedly installed on the top of the support leg 1, a first support pipe frame 21 fixedly installed on one side outer wall of the flue gas treatment shell 2, a second support pipe frame 22 fixedly installed on the other side outer wall of the flue gas treatment shell 2, and the second support pipe frame 22 is located below the first support pipe frame 21. A control console 3 is provided in front of the flue gas treatment shell 2, and a flue gas inlet pipe 4 is connected to one side outer wall of the flue gas treatment shell 2, and the flue gas inlet pipe 4 is fixedly installed. At the top of the supporting pipe frame 21, a water outlet pipe 5 is connected to the bottom of the flue gas treatment housing 2, and a recovery filter box 51 is provided below the water outlet pipe 5; a flue gas filter assembly 6 is provided inside and outside the flue gas treatment housing 2; the flue gas filter assembly 6 includes: a first treatment part 61, which is provided outside the flue gas treatment housing 2; and a second treatment part 62, which is provided inside and outside the flue gas treatment housing 2, and is provided below the first treatment part 61.

[0024] The treatment section 61 includes an ammonia storage tank 611, which is located behind the support pipe frame 21 and is fixedly installed on the outer wall of the flue gas treatment shell 2.

[0025] A supplementary connection pipe is provided at the top of the ammonia storage tank 611. A transfer pump 612 is provided inside the ammonia storage tank 611. A transfer pipe 613 is provided at the connection port of the transfer pump 612. The transfer pipe 613 movably passes through the top of the ammonia storage tank 611 and extends into the interior of the flue gas inlet pipe 4. A sealing ring is fitted on the outer wall of the transfer pipe 613 and is located at the top of the flue gas inlet pipe 4.

[0026] A transverse spray pipe 614 is connected to the bottom of the conveying pipe 613, and the transverse spray pipe 614 is fixedly installed on the inner wall of the flue gas inlet pipe 4. Spray holes 615 are evenly spaced at the bottom of the transverse spray pipe 614. A first filter adsorption layer 616 is provided below the transverse spray pipe 614, and the first filter adsorption layer 616 is evenly spaced and fixedly installed on the inner wall of the flue gas treatment shell 2, located below the flue gas inlet pipe 4.

[0027] Furthermore, in this embodiment, ammonia water is transported through a delivery pump 612 in an ammonia water storage tank 611 to a transverse spray pipe 614 in the flue gas inlet pipe 4 via a delivery pipe 613. The ammonia water is sprayed out in a mist form through the uniformly spaced spray holes 615 at the bottom, making full contact with the high-temperature flue gas. At the same time, the mist spray liquid can adsorb fine dust, achieving the dual effect of "acid neutralization + preliminary dust reduction". This prevents high-concentration acidic gas from directly entering subsequent stages and corroding equipment. In conjunction with the first filter adsorption layer 616 adsorbing some organic pollutants, the concentration of harmful components in the flue gas after preliminary purification is significantly reduced.

[0028] Example 2:

[0029] Based on Embodiment 1, a preferred embodiment of the cement kiln flue gas treatment device provided by this utility model is as follows: Figure 1-4 As shown: the second treatment part 62 includes: a lime water storage tank 621, which is located on one side of the support leg 1; a second conveying pump 622 is installed inside the lime water storage tank 621, and a second conveying pipe 623 is connected to the connection port of the second conveying pump 622. The second conveying pipe 623 movably passes through the top of the lime water storage tank 621, and a connecting pipe 624 is connected to the top of the second conveying pipe 623. The connecting pipe 624 movably passes through the outer wall of the flue gas treatment shell 2 and extends into the interior of the flue gas treatment shell 2.

[0030] A support ring 625 is fixedly installed at the other end of the connecting pipe 624, and the support ring 625 is fixedly installed on the inner wall of the flue gas treatment shell 2 on the other side. A dispersion connecting pipe 626 is uniformly and evenly connected to the bottom of the connecting pipe 624. A spray head 627 is uniformly and evenly connected to the bottom of the dispersion connecting pipe 626. A second adsorption layer 628 is provided below the spray head 627, and the second adsorption layer 628 is uniformly and evenly fixedly installed on the inner wall of the flue gas treatment shell 2.

[0031] A connecting sleeve 629 is provided below the second adsorption layer 628, and the connecting sleeve 629 is connected to the outer wall of the second conveying pipe 623. A second connecting pipe 6210 is connected to the outer wall of the connecting sleeve 629, and the second connecting pipe 6210 movably penetrates the outer wall of the flue gas treatment shell 2 and extends into the interior of the flue gas treatment shell 2. A second dispersive connecting pipe 6211 is uniformly and evenly connected to the bottom of the second connecting pipe 6210, and a second spray head 6212 is uniformly and evenly connected to the bottom of the second dispersive connecting pipe 6211.

[0032] A collection bag 6213 is provided below the second spray head 6212. A vibration block 6214 is provided on the outer wall of the collection bag 6213, and the vibration block 6214 is fixedly installed on the inner wall of the flue gas treatment shell 2. A smoke exhaust connecting pipe 6215 is provided on one side of the outer wall of the collection bag 6213. The smoke exhaust connecting pipe 6215 movably passes through the outer wall of the flue gas treatment shell 2 and extends to the bottom of the second support pipe frame 22 for fixed connection. The bottom of the collection bag 6213 is connected to the water outlet pipe 5 through the sewage outlet pipe.

[0033] Furthermore, in this embodiment, a second pump 622 equipped with a lime water storage tank 621 delivers lime water through a second delivery pipe 623 in two directions. One direction is sprayed out in a conical shape from a first spray head 627 via a connecting pipe 624 and a first dispersion connecting pipe 626. The lime water can neutralize the residual acidic gases in the flue gas. Subsequently, the flue gas passes through the second adsorption layer 628, where alkaline alumina material adsorbs tiny particles, improving cleanliness. The other direction is sprayed from a second spray head 6212 via a connecting sleeve 629, a second connecting pipe 6210, and a second dispersion connecting pipe 6211, providing secondary deep purification of the flue gas. Then, the flue gas enters a collection bag 6213, where a vibrating block 6214 promptly shakes off dust from the inner wall of the filter bag, preventing blockage and affecting ventilation efficiency.

[0034] Before starting the device, the operator must complete the basic preparation and parameter configuration through the control panel 3 in front of the flue gas treatment shell 2: First, check whether the flue gas treatment shell 2 on the top of the support frame leg 1 is stable, and whether the pipe connection on the support pipe frame 1 21 and the support pipe frame 22 is sealed; then replenish the reagents: add sufficient ammonia water to the ammonia water storage tank 611 of the treatment section 1 61, and prepare and add lime water to the lime water storage tank 621 of the treatment section 2 62. At the same time, ensure that the recovery filter box 51 is placed directly below the water outlet pipe 5 to avoid sewage leakage. Set the key operating parameters through the control panel 3: adjust the flow rate of the first and second pumps 622 according to the flue gas emission, the spray pressure of the horizontal spray pipe 614 and the first and second spray heads 627 and 6212, and the vibration frequency of the vibrating block 6214. After the parameters are set, start the device to preheat. After the pumps and the spray system enter a stable state, it is ready to receive the flue gas from the cement kiln.

[0035] Furthermore, the high-temperature flue gas produced by cement kilns contains SO2 and NO. x Acidic gases and dust enter the treatment system through the flue gas inlet pipe 4, which is fixed on the top of the support pipe frame 21. The treatment section 61 first starts the pretreatment: the transfer pump 612 inside the ammonia storage tank 611 is powered on and operates, and the ammonia in the tank is transferred through the outer wall of the transfer pipe 613 with a sealing ring to ensure that there is no leakage at the connection with the flue gas inlet pipe 4, and then transferred to the horizontal spray pipe 614 on the inner wall of the flue gas inlet pipe 4.

[0036] Ammonia water forms a stable pressure within the transverse spray pipe 614 and is sprayed out in a mist form through the uniformly spaced spray holes 615 at the bottom, making full contact with the high-temperature flue gas flowing through it. As an alkaline agent, ammonia water can quickly neutralize acidic gases in the flue gas, such as SO2, which reacts with ammonia water to form ammonium sulfite. At the same time, the mist spray liquid can adsorb some fine dust, achieving the dual effect of "acid neutralization + preliminary dust reduction". The flue gas that has completed the preliminary treatment carries the spray droplets and enters the flue gas treatment shell 2 from the flue gas inlet pipe 4. It then flows through the first filter adsorption layer 616 below the transverse spray pipe 614, which is uniformly fixed to the inner wall of the flue gas treatment shell 2. The first filter adsorption layer 616 is made of a mixture of activated carbon and quartz sand, which can further trap dust particles and unreacted acidic substances in the flue gas, while adsorbing some organic pollutants. The flue gas that has been preliminarily purified continues to enter the deep treatment area of ​​the second treatment section 62.

[0037] Furthermore, the second treatment section 62 achieves deep purification of flue gas through "two-stage lime water spraying + adsorption bag filtration", which is divided into three sub-stages: first-stage lime water spraying and second-stage adsorption layer filtration. The second delivery pump 622 inside the lime water storage tank 621 is started, and the lime water is delivered through the second delivery pipe 623 to the connecting pipe 624, which penetrates the outer wall of the flue gas treatment shell 2 and enters the interior. The connecting pipe 624 is fixed to the inner wall of the other side of the flue gas treatment shell 2 by the support ring 625 to maintain stability. The lime water is diverted through the connecting pipe 624 to the bottom equidistant and evenly dispersed connecting pipe 626, and finally sprayed out in a cone shape from the first spray head 627.

[0038] Lime water, as a strong alkaline agent, can further neutralize residual acidic gases in the flue gas, such as unreacted SO2, to form calcium sulfate. At the same time, it can chelate heavy metal ions in the flue gas, such as Pb and Hg. After spraying, the flue gas continues to flow downwards through the second adsorption layer 628, which is evenly fixed on the inner wall of the flue gas treatment shell 2 at equal intervals. The second adsorption layer 628 is made of alkaline alumina material, which can adsorb the small particles and harmful gases remaining after spraying, further improving the cleanliness of the flue gas.

[0039] Secondary lime water spraying and collection bag interception

[0040] Part of the lime water is diverted through the connecting sleeve 629 connected to the outer wall of the second conveying pipe 623 to the second connecting pipe 6210, which penetrates the outer wall of the flue gas treatment shell 2 and enters the interior. It is then transported to the second spray head 6212 through the second dispersing connecting pipe 6211 at the bottom of the second connecting pipe 6210, where the flue gas is sprayed again to ensure that the acid gas removal rate reaches more than 95%. The flue gas that has completed the second spraying enters the collection bag 6213 located below the second spray head 6212. The collection bag 6213 is made of high temperature resistant filter bag material, which can intercept the remaining fine dust in the flue gas and achieve "gas-solid separation".

[0041] Vibration removal and wastewater recycling

[0042] During the operation of the collection bag 6213, the vibrating block 6214 on its outer wall is fixed to the inner wall of the flue gas treatment shell 2 and vibrates at a preset frequency to shake off the dust attached to the inner wall of the collection bag 6213, so as to avoid the filter bag from clogging and affecting the ventilation efficiency. The shaken-off dust, along with the wastewater containing reaction products and dust generated by each stage of spraying, is collected at the bottom of the flue gas treatment shell 2 and discharged into the recovery filter box 51 below through the water outlet pipe 5. After preliminary filtration by the recovery filter box 51, the wastewater can be further treated to meet the discharge standards or recycled, while the filter residue is treated as solid waste.

[0043] The clean flue gas filtered by the collection bag 6213 passes through the outer wall of the flue gas treatment shell 2 through the exhaust connection pipe 6215 connected to one side of the outer wall of the collection bag 6213, and is fixed at the bottom of the support pipe frame 22 before being discharged. Before being discharged, the composition of the flue gas can be monitored in real time through the control console 3 to ensure that it meets the national emission standards.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cement kiln flue gas treatment device, comprising supporting legs (1), characterized in that: A flue gas treatment shell (2) is fixedly installed on the top of the support leg (1). A support pipe frame one (21) is fixedly installed on one side of the outer wall of the flue gas treatment shell (2). A support pipe frame two (22) is fixedly installed on the other side of the outer wall of the flue gas treatment shell (2). The support pipe frame two (22) is located below the support pipe frame one (21). A control console (3) is provided in front of the flue gas treatment shell (2). A flue gas inlet pipe (4) is connected to one side of the outer wall of the flue gas treatment shell (2). The flue gas inlet pipe (4) is fixedly installed on the top of the support pipe frame one (21). A water outlet pipe (5) is connected to the bottom of the flue gas treatment shell (2). A recycling filter box (51) is provided below the water outlet pipe (5). A flue gas filter assembly (6) is disposed inside and outside the flue gas treatment housing (2); The flue gas filter assembly (6) includes: Processing part one (61) is disposed on the outside of the flue gas treatment shell (2); Processing part two (62) is disposed inside and outside the flue gas treatment shell (2), and processing part two (62) is disposed below processing part one (61).

2. The cement kiln flue gas treatment device according to claim 1, characterized in that: The first processing unit (61) includes: Ammonia storage tank (611) is located behind the support pipe frame (21) and is fixedly installed on the outer wall of the flue gas treatment shell (2). The top of the ammonia storage tank (611) is connected to a supplementary connecting pipe. The ammonia storage tank (611) is equipped with a first delivery pump (612). The connection port of the first delivery pump (612) is connected to a first delivery pipe (613). The first delivery pipe (613) movably passes through the top of the ammonia storage tank (611) and extends into the interior of the flue gas inlet pipe (4). The outer wall of the first delivery pipe (613) is fitted with a sealing ring and is located at the top of the flue gas inlet pipe (4).

3. The cement kiln flue gas treatment device according to claim 2, characterized in that: The bottom of the first conveying pipe (613) is connected to a horizontal spray pipe (614), and the horizontal spray pipe (614) is fixedly installed on the inner wall of the flue gas inlet pipe (4). Spray holes (615) are evenly spaced at the bottom of the horizontal spray pipe (614). A first filter adsorption layer (616) is provided below the horizontal spray pipe (614), and the first filter adsorption layer (616) is evenly spaced and fixedly installed on the inner wall of the flue gas treatment shell (2), located below the flue gas inlet pipe (4).

4. The cement kiln flue gas treatment device according to claim 1, characterized in that: The second processing unit (62) includes: A lime water storage tank (621) is provided on one side of the support leg (1); The lime water storage tank (621) is equipped with a second conveying pump (622). The connection port of the second conveying pump (622) is connected to a second conveying pipe (623), and the second conveying pipe (623) extends through the top of the lime water storage tank (621). The top of the second conveying pipe (623) is connected to a connecting pipe (624), and the connecting pipe (624) extends through the outer wall of the flue gas treatment shell (2) and into the interior of the flue gas treatment shell (2).

5. The cement kiln flue gas treatment device according to claim 4, characterized in that: A support ring (625) is fixedly installed at the other end of the connecting pipe (624), and the support ring (625) is fixedly installed on the inner wall of the flue gas treatment shell (2) on the other side. A dispersion connecting pipe (626) is uniformly and evenly connected at the bottom of the connecting pipe (624). A spray head (627) is uniformly and evenly connected at the bottom of the dispersion connecting pipe (626). A second adsorption layer (628) is provided below the spray head (627), and the second adsorption layer (628) is uniformly and evenly fixedly installed on the inner wall of the flue gas treatment shell (2).

6. The cement kiln flue gas treatment device according to claim 5, characterized in that: A connecting sleeve (629) is provided below the second adsorption layer (628), and the connecting sleeve (629) is connected to the outer wall of the second conveying pipe (623). A second connecting pipe (6210) is connected to the outer wall of the connecting sleeve (629), and the second connecting pipe (6210) movably penetrates the outer wall of the flue gas treatment shell (2) and extends into the interior of the flue gas treatment shell (2). A second dispersive connecting pipe (6211) is uniformly and evenly connected to the bottom of the second connecting pipe (6210), and a second spray head (6212) is uniformly and evenly connected to the bottom of the second dispersive connecting pipe (6211).

7. The cement kiln flue gas treatment device according to claim 6, characterized in that: A collection bag (6213) is provided below the second spray head (6212). A vibration block (6214) is provided on the outer wall of the collection bag (6213), and the vibration block (6214) is fixedly installed on the inner wall of the flue gas treatment shell (2). A smoke exhaust connecting pipe (6215) is provided on one side of the outer wall of the collection bag (6213), and the smoke exhaust connecting pipe (6215) movably penetrates the outer wall of the flue gas treatment shell (2) and extends to the bottom of the second support pipe frame (22) for fixed connection. The bottom of the collection bag (6213) is connected to the water outlet pipe (5) through the sewage outlet pipe.

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