Wet type diesel generating set tail gas treatment device

Abstract

The utility model discloses a wet-type diesel generating set tail gas treatment device, which comprises a box body, a first filter plate, a second filter plate, a second filter plate, a third filter plate, a third filter plate, a fourth filter plate, a fourth filter plate, a fourth filter plate, a fifth filter plate and a sixth filter plate, and the upper end of the box body is provided with a gas inlet and a gas outlet; the first filter plate is provided with an interlayer, and the filler is arranged in the interlayer; the dispersing disc is fixedly arranged at the air outlet end of the air inlet in a covering mode and used for dispersing smoke, and a plurality of dispersing holes are evenly formed in the dispersing disc; wherein the air inlet is communicated with the smoke washing chamber, the exhaust port is communicated with the smoke exhaust chamber, the dispersing disc and the filter plate are arranged, so that smoke can be effectively dispersed through the dispersing disc when entering the box body, the contact area of the smoke and spraying liquid is increased, meanwhile, the filter plate and the filler provide a gas-liquid contact interface, and the smoke can be effectively dispersed through the dispersing disc when entering the box body. Washing and absorption of the smoke are enhanced, so that the smoke washing effect is better, and the smoke is more fully contacted with water mist.

Description

Technical Field

[0001] This utility model belongs to the technical field of diesel generator set exhaust gas treatment devices, and particularly relates to a wet diesel generator set exhaust gas treatment device. Background Technology

[0002] A wet diesel generator set exhaust gas treatment device typically refers to a generator set exhaust gas scrubber. The exhaust gas scrubber is a highly efficient purification device that removes harmful substances from smoke and exhaust gases through water washing. In the generator room, the exhaust gas scrubber is usually located at the generator set's exhaust port. The exhaust gas from the generator set is introduced into the scrubber, where harmful substances are removed through water spraying.

[0003] First, the flue gas is introduced into the flue gas washing chamber, where water is sprayed onto it through a sprayer, ensuring thorough contact between the flue gas and water. During this contact process, harmful substances in the flue gas are absorbed and removed by the water. Then, the washed flue gas is discharged from the washing chamber through the exhaust port, while black smoke and dust are also settled.

[0004] However, traditional fume scrubbing devices typically use an empty box spray structure, which allows flue gas to enter the box directly without being effectively dispersed. This results in low mixing efficiency with the spray liquid, and some pollutants (such as black smoke and dust) are discharged without being fully absorbed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a wet diesel generator set exhaust gas treatment device, including a housing, the upper end of which has an air inlet and an exhaust outlet, characterized in that it further includes:

[0006] The first filter plate is fixed inside the box and divides the internal space of the box into a smoke washing chamber and a smoke exhaust chamber.

[0007] The first filter plate has a sandwich layer, and the sandwich layer is provided with packing material.

[0008] A discrete disk, which is fixedly installed at the outlet end of the air inlet, is used to disperse the flue gas. The discrete disk has a number of discrete holes evenly distributed on it.

[0009] A demisting assembly, located at the exhaust port, is used to remove water mist carried by the discharged flue gas.

[0010] The spray assembly, which is installed on the housing, is used to spray the flue gas entering the smoke washing chamber.

[0011] The air inlet is connected to the smoke washing chamber, and the exhaust outlet is connected to the smoke exhaust chamber.

[0012] Furthermore, the discrete disk is an arc-shaped disk, with one side of the concave surface of the discrete disk facing the air outlet of the air inlet, and one side of the convex surface of the discrete disk facing the smoke washing chamber, and a plurality of discrete holes are evenly distributed circumferentially on the arc surface of the discrete disk.

[0013] Furthermore, it also includes:

[0014] The second filter plate is located in the smoke exhaust chamber and is fixedly connected to the housing. The second filter plate also has a sandwich layer and filler.

[0015] A transition chamber is formed between the first filter plate and the second filter plate.

[0016] Furthermore, the packing material is a Pall ring.

[0017] Furthermore, the packing material in the first filter plate is a large-diameter Pall ring, and the packing material in the second filter plate is a small-diameter Pall ring.

[0018] Furthermore, the defogging assembly includes:

[0019] A demister is fixedly installed at the outlet end of the exhaust port;

[0020] A cleaning nozzle is fixedly installed inside the exhaust pipe, with the other end of the cleaning nozzle extending out of the exhaust pipe, and the nozzle of the cleaning nozzle facing downwards towards the demister.

[0021] The demister is a wire mesh demister.

[0022] Furthermore, the spray assembly includes:

[0023] The spray head is fixedly installed inside the box, and the other end of the spray head extends out of the outside of the box.

[0024] The water pump is fixedly installed on the outside of the housing, and the other end of the water pump is connected to the spray head via a pipe.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. By setting up a discrete disk and filter plate, the flue gas can be effectively dispersed by the discrete disk when it enters the box, increasing the contact area between the flue gas and the spray liquid. At the same time, the filter plate and packing provide a gas-liquid contact interface, which enhances the washing and absorption of the flue gas, resulting in better flue gas washing effect and more sufficient contact between flue gas and water mist.

[0027] 2. By setting the discrete disk as an arc surface structure, it plays a role in guiding the airflow diffusion. After the flue gas passes through the discrete disk, it forms a radial flow field, which makes the contact area between the flue gas and the spray liquid better. The circumferentially distributed discrete holes can also make the exhaust gas enter the flue gas washing process more evenly, so that the gas and liquid are fully mixed.

[0028] 3. By setting up a second filter plate, the flue gas undergoes preliminary separation of gas, liquid, and dust after passing through the first filter plate. Then, the flue gas enters the transition chamber and moves toward the second filter plate. The second filter plate plays a secondary transition role for the flue gas, further filtering and separating gas, liquid, and dust, resulting in better flue gas purification.

[0029] 4. By using Pall rings as packing material, the open structure of Pall rings creates a complex gas-liquid contact interface on their surface, significantly increasing the contact area between flue gas and spray liquid. In addition, Pall rings have low fluid resistance and low water pump power requirements, making them suitable for long-term stable operation of diesel generator sets.

[0030] 5. Because the packing material in the first filter plate is a large-diameter Pall ring, the porosity is high. This large pore structure can reduce airflow resistance and pre-treat large particulate pollutants or distribute the airflow evenly. The small-diameter Pall ring in the second filter plate can utilize the high specific surface area of ​​the small-sized packing material to finely capture tiny particles, further filter fine particulate matter, separate gas and liquid, and improve purification accuracy.

[0031] 6. By installing a demister, residual water mist in the flue gas can be trapped, preventing the exhaust gas from being too humid. At the same time, a cleaning nozzle is installed, which can manually or automatically clean the demister periodically to prevent pollutant accumulation and extend its service life. Attached Figure Description

[0032] Appendix Figure 1 This is a structural diagram of the present invention;

[0033] Appendix Figure 2 This is a construction diagram of a discrete disk;

[0034] Appendix Figure 3 This is a cross-sectional view of the present invention;

[0035] Appendix Figure 4 For the appendix Figure 3 Enlarged diagram of A in the middle;

[0036] Explanation of reference numerals in the attached drawings: 1. Box body, 2. Air inlet, 3. Exhaust outlet, 4. First filter plate, 5. Smoke washing chamber, 6. Smoke exhaust chamber, 7. Packing material, 8. Discrete plate, 9. Discrete hole, 10. Second filter plate, 11. Transition chamber, 12. Demister, 13. Cleaning nozzle, 14. Spray head, 15. Water pump. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, it should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. Example 1

[0038] This embodiment provides a wet diesel generator set exhaust gas treatment device, including a housing 1, the upper end of which has an air inlet 2 and an exhaust outlet 3, and further including:

[0039] The first filter plate 4 is fixed inside the housing 1, and divides the internal space of the housing 1 into a smoke washing chamber 5 and a smoke exhaust chamber 6.

[0040] The first filter plate 4 has a sandwich layer, and the filler 7 is disposed in the sandwich layer;

[0041] The discrete disk 8 is fixedly installed at the outlet end of the air inlet 2 and is used to disperse the flue gas. The discrete disk 8 is evenly provided with a number of discrete holes 9.

[0042] A demisting component is installed at exhaust port 3 to remove water mist carried by the exhaust gas.

[0043] A spray assembly, which is installed on the housing 1, is used to spray the flue gas entering the smoke washing chamber 5.

[0044] The air inlet 2 is connected to the smoke washing chamber 5, and the exhaust outlet 3 is connected to the smoke exhaust chamber 6.

[0045] In this technical solution, before the flue gas enters the housing 1, it can be pre-treated by an external dust collector (dust removal can be carried out through technologies such as cyclone dust collectors, bag filters, and electrostatic dust collectors, which are existing technologies and will not be elaborated on here). This reduces the amount of flue gas particles in the flue gas, avoids wear on the components inside the housing 1, reduces equipment maintenance costs, and improves the flue gas washing effect.

[0046] The spray assembly is pre-activated, spraying water mist. The treated flue gas can be input into the air inlet 2 of the housing 1 through the pipeline. The air inlet 2 and the exhaust port 3 are flanges for easy connection to the pipeline.

[0047] After the flue gas enters the housing 1 through the air inlet 2, it is dispersed by several discrete holes 9 of the discrete disk 8, so that the flue gas can enter the smoke washing chamber 5 of the housing 1 more evenly, prolonging the contact time between the spray water mist and the flue gas, and preventing the airflow from being discharged directly without sufficient treatment.

[0048] Simultaneously, after the flue gas enters the flue gas washing chamber 5, the sprayed water mist intercepts or adsorbs the particles in the flue gas, thereby achieving the flue gas washing effect. At the same time, the flue gas comes into contact with the first filter plate 4, which is composed of a two-layer stainless steel mesh structure with a sandwich layer. The sandwich layer contains packing material 7, typically Pall rings, multi-faceted hollow spheres, Raschig rings, ceramic I-rings, etc. This increases the gas-liquid contact area, allowing harmful substances in the flue gas to fully contact the sprayed liquid, providing a gas-liquid interface, and thus achieving the purpose of purifying the flue gas.

[0049] Through this structural design, by setting up a discrete disk 8 and a filter plate, the flue gas can be effectively dispersed by the discrete disk 8 when it enters the housing 1, increasing the contact area between the flue gas and the spray liquid. At the same time, the filter plate and the packing 7 provide a gas-liquid contact interface, which enhances the washing and absorption of the flue gas, resulting in better flue gas washing effect and more sufficient contact between the flue gas and the water mist. Example 2

[0050] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] Furthermore, the discrete disk 8 is an arc-shaped disk, with one side of the concave surface of the discrete disk 8 facing the air outlet of the air inlet 2 and one side of the convex surface of the discrete disk 8 facing the smoke washing chamber 5, and a plurality of discrete holes 9 are evenly distributed circumferentially on the arc surface of the discrete disk 8.

[0052] Through this structural design, by setting the discrete disk 8 as an arc surface structure, it plays a role in guiding the airflow diffusion. After the flue gas passes through the discrete disk 8, it forms a radial flow field, which makes the contact area between the flue gas and the spray liquid better. The circumferentially distributed discrete holes 9 can also make the exhaust gas enter the flue gas washing process more evenly, so that the gas and liquid are fully mixed. Example 3

[0053] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] Furthermore, it also includes:

[0055] The second filter plate 10 is located inside the smoke exhaust chamber 6 and is fixedly connected to the housing 1. The second filter plate 10 also has a sandwich layer and a packing 7.

[0056] A transition chamber 11 is formed between the first filter plate 4 and the second filter plate 10.

[0057] With this structural design, by setting a second filter plate 10, the flue gas undergoes preliminary separation of gas, liquid and dust after passing through the first filter plate 4. Then the flue gas enters the transition chamber 11 and moves toward the second filter plate 10. The second filter plate 10 plays a secondary transition role for the flue gas, further filtering and separating gas, liquid and dust, so that the flue gas purification effect is better. Example 4

[0058] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, the packing 7 is a Pall ring.

[0060] Through this structural design, by using Pall rings for the packing 7, the open structure of the Pall rings forms a complex gas-liquid contact interface on its surface, which significantly increases the contact area between flue gas and spray liquid. In addition, the Pall rings have low fluid resistance and low power requirements for the water pump 15, making them suitable for long-term stable operation of diesel generator sets.

[0061] In wet scrubbing, the liquid film on its surface can capture particulate matter in the smoke, and the random stacking structure of the Pall rings can also break the laminar flow state of the airflow and form turbulence, making the flue gas more evenly distributed in the packing 7, avoiding the airflow from passing directly without effective treatment, prolonging the residence time of the flue gas in the equipment, and improving the purification efficiency. Example 5

[0062] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] Furthermore, the packing 7 in the first filter plate 4 is a large-diameter Pall ring, while the packing 7 in the second filter plate 10 is a small-diameter Pall ring.

[0064] In this technical solution, the packing material 7 in the first filter plate 4 is a large-diameter Pall ring, resulting in high porosity. This large pore structure can reduce airflow resistance and simultaneously pre-treat large particulate pollutants or distribute the airflow evenly. Meanwhile, the small-diameter Pall ring in the second filter plate 10 can utilize the high specific surface area of ​​the small-sized packing material 7 to finely capture tiny particles, further filter fine particulate matter, separate gas and liquid, and improve purification accuracy. Example 6

[0065] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] Furthermore, the defogging assembly includes:

[0067] Demister 12 is fixedly installed at the outlet end of exhaust port 3;

[0068] The cleaning nozzle 13 is fixedly installed inside the pipe of the exhaust port 3. The other end of the cleaning nozzle 13 extends out of the outside of the pipe of the exhaust port 3. The nozzle of the cleaning nozzle 13 is positioned facing downwards towards the demister 12.

[0069] The demister 12 is a wire mesh demister.

[0070] In this technical solution, the other end of the cleaning nozzle 13 can be connected to an external water pump 15, and the wire mesh demister 12 can be cleaned by manually opening and closing it, thus achieving a self-cleaning function.

[0071] This structural design incorporates a demister 12, which traps residual water mist in the flue gas, preventing excessively high humidity in the discharged flue gas. Additionally, a cleaning nozzle 13 allows for manual or automatic periodic rinsing of the demister 12, preventing pollutant buildup and extending its service life. Example 7

[0072] This embodiment provides a wet diesel generator set exhaust gas treatment device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] Furthermore, the spray assembly includes:

[0074] A spray head 14 is fixedly installed inside the housing 1, and the other end of the spray head 14 extends out of the outside of the housing 1.

[0075] A water pump 15 is fixedly installed on the outside of the housing 1, and the other end interface of the water pump 15 is connected to the spray head 14 through a pipe.

[0076] In this technical solution, the spray head 14 is an atomizing spray head 14, which facilitates spraying of flue gas, and the water pump 15 is used to supply water to the spray head 14.

[0077] The working principle of this utility model:

[0078] Flue gas enters through inlet 2, is dispersed into multiple streams by the discrete disk 8, and then enters the flue gas washing chamber 5, where it is thoroughly mixed with the washing liquid sprayed from the spray head 14. The Pall rings in the first filter plate 4 provide the air-liquid contact area, particulate matter is captured by the washing liquid, and acidic gases (such as SO2) are absorbed by the alkaline solution.

[0079] The pre-purified gas passes through the first filter plate 4 and enters the transition chamber 11 (between the first and second filter plates), where larger droplets settle due to gravity. The gas then passes through the second filter plate 10, where small-diameter Pall rings further trap tiny particles and unreacted droplets.

[0080] After the gas enters the smoke exhaust chamber 6, the residual water mist is removed by the wire mesh demister 12, and finally the clean gas is discharged from the demister 12. The cleaning nozzle 13 regularly rinses the demister 12 to prevent the accumulation of pollutants.

[0081] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application specification can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A wet type exhaust treatment device for a diesel generator set, comprising a box (1), the upper end of the box (1) having an air inlet (2) and an exhaust outlet (3), characterized in that, Also include: The first filter plate (4) is fixed in the box (1), and the inside space of the box (1) is divided into a smoke washing chamber (5) and a smoke exhaust chamber (6); The first filter plate (4) has a sandwich, and the sandwich is provided with the filler (7); The discrete disc (8) is fixed and covered at the air outlet end of the air inlet (2), and is used for dispersing the flue gas, and a plurality of discrete holes (9) are uniformly arranged on the discrete disc (8); The demisting assembly is arranged at the air outlet (3), and is used for removing the water mist carried by the exhaust flue gas; The spray assembly is arranged on the box (1), and is used for spraying the flue gas entering the smoke washing chamber (5); The air inlet (2) is communicated with the smoke washing chamber (5), and the air outlet (3) is communicated with the smoke exhaust chamber (6).

2. The wet-type diesel generator set exhaust treatment device according to claim 1, characterized in that: The discrete disc (8) is a cambered surface disc, one side of the concave surface of the discrete disc (8) faces the air outlet end of the air inlet (2), and the other side of the convex surface of the discrete disc (8) faces the smoke washing chamber (5), and a plurality of discrete holes (9) are uniformly distributed on the cambered surface of the discrete disc (8).

3. The exhaust treatment device for a wet- type diesel generator set according to claim 2, characterized in that, Also include: The second filter plate (10) is located in the smoke exhaust chamber (6) and is fixedly connected with the box (1), and the second filter plate (10) also has a sandwich and a filler (7); The first filter plate (4) and the second filter plate (10) form a transition chamber (11).

4. The exhaust treatment device for a wet- type diesel generator set according to claim 3, characterized in that: The filler (7) is a Pall ring.

5. A wet-type diesel generator set exhaust treatment device according to claim 4, characterized in that: The filler (7) in the first filter plate (4) is a large diameter Pall ring, and the filler (7) in the second filter plate (10) is a small diameter Pall ring.

6. The exhaust treatment device for a wet-type diesel generator set according to any one of claims 1 to 5, characterized in that, The demisting assembly includes: The demister (12) is fixedly arranged at the air outlet end of the air outlet (3); The cleaning spray head (13) is fixedly arranged in the pipeline of the air outlet (3), and the other end interface of the cleaning spray head (13) extends out of the outside of the pipeline of the air outlet (3), and the nozzle of the cleaning spray head (13) is arranged below the demister (12); The demister (12) is a wire mesh demister.

7. The wet-type diesel generator set exhaust treatment device according to claim 6, wherein The spray assembly includes: The spray head (14) is fixedly arranged in the box (1), and the other end interface of the spray head (14) extends out of the outside of the box (1); The water pump (15) is fixedly arranged outside the box (1), and the other end interface of the water pump (15) and the spray head (14) is connected through a pipeline.

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