Wet-type desulfurization and denitrification equipment for industrial flue gas

Abstract

The utility model relates to the technical field of flue gas treatment equipment, and discloses wet-type desulfurization and denitrification equipment for industrial flue gas, which comprises a recycling bin, a spraying tank is arranged at the top of the recycling bin, and a drainage pipe is arranged on the inner bottom wall of the spraying tank. According to the wet-type desulfurization and denitrification equipment for the industrial flue gas, by arranging the filtering assembly, when a first filtering plate and a second filtering plate on the right side need to be detached and cleaned, a first valve outside a right conveying pipe is firstly closed, and a first valve outside a left conveying pipe is opened; the equipment can perform filtering treatment through the left first filter plate and the second filter plate, at the moment, the right first filter plate and the second filter plate can be pulled out for cleaning, and when the left first filter plate and the second filter plate need to be cleaned, the left first valve is closed and the right first valve is opened, so that non-stop cleaning is realized; and the working efficiency of the equipment is improved, the practicability of the device is improved, and workers can use the device conveniently.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas treatment equipment, specifically a wet desulfurization and denitrification equipment for industrial flue gas. Background Technology

[0002] As is well known, desulfurization and denitrification equipment is an auxiliary device used in flue gas treatment processes to remove nitrogen oxides and sulfur oxides from flue gas using desulfurization and denitrification catalysts. It is widely used in the field of flue gas desulfurization and denitrification.

[0003] The reference patent number is "CN222518238U", entitled "A Desulfurization and Denitrification Flue Gas Treatment Device". Although this application solves the problem that "after long-term use, a large amount of dust will accumulate on the filter screen, and in severe cases, the filter screen may even become clogged, thus affecting the normal filtration operation of the filter screen. Cleaning the filter screen requires opening the spray tank, which makes the operation of cleaning the spray tank more troublesome and reduces the efficiency of cleaning the filter screen", it also has some defects. For example, when multiple filter screens need to be cleaned, the equipment needs to be shut down for processing, which reduces the working efficiency of the equipment. Therefore, a wet desulfurization and denitrification device for industrial flue gas is proposed to solve the above-mentioned technical problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a wet desulfurization and denitrification device for industrial flue gas, which has advantages such as improving equipment working efficiency and solving the problem that equipment needs to be shut down for cleaning multiple filters, thus reducing the equipment's working efficiency.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of improving equipment efficiency, this utility model provides the following technical solution: a wet desulfurization and denitrification device for industrial flue gas, comprising a recovery tank, a spray tank at the top of the recovery tank, a drain pipe on the inner bottom wall of the spray tank, a filter assembly fixedly connected to the outside of the drain pipe at the top of the recovery tank, the filter assembly being connected to the inner top wall of the recovery tank, a water tank at the top of the recovery tank, a liquid level observation assembly extending into the water tank at the top of the water tank, a first conveying pump at the top of the recovery tank, a first connecting pipe extending into the recovery tank at the input end of the first conveying pump, a second connecting pipe extending into the water tank at the output end of the first conveying pump, a second conveying pump at the top of the water tank, a third connecting pipe extending into the water tank at the input end of the second conveying pump, and a conveying pipe extending into the spray tank at the output end of the second conveying pump;

[0008] The filter assembly includes a three-way pipe. A three-way pipe is provided at the bottom of the drain pipe. Two filter boxes are provided at the top of the recycling box and are symmetrically distributed from left to right. A conveying pipe is provided on each of the left and right side walls of the three-way pipe, with one end extending into the interior of each of the two filter boxes. A first filter plate is provided on the inner wall of each of the two filter boxes, with one end extending into the top of each of the two filter boxes. The two second filter plates are located on opposite sides of the two first filter plates. A guide pipe is provided on the bottom wall of each of the two filter boxes, with one end extending into the interior of the recycling box. The two guide pipes are located on opposite sides of the two second filter plates.

[0009] The liquid level observation component includes a scale plate. The scale plate is provided on the top of the water tank. An indicator plate is provided on the front side wall of the scale plate. An extension rod is provided at the bottom of the indicator plate, with one end extending into the interior of the water tank. A float is provided at the bottom of the extension rod.

[0010] Preferably, a first valve is fixedly connected to the outside of both of the conveying pipes.

[0011] Preferably, the inner wall of the recycling bin is connected to a discharge pipe extending to its rear end, and a second valve is fixedly connected to the outside of the discharge pipe.

[0012] Preferably, the filter box has a limiting groove inside that is adapted to the first filter plate and the second filter plate.

[0013] Preferably, the pore size inside the first filter plate is larger than the pore size inside the second filter plate.

[0014] Preferably, a material injection pipe with one end extending into the inside is fixedly connected to the right side wall of the water tank, and a third valve is fixedly connected to the outside of the material injection pipe.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a wet desulfurization and denitrification device for industrial flue gas, which has the following beneficial effects:

[0017] 1. This wet desulfurization and denitrification equipment for industrial flue gas, by setting up a filter assembly, when it is necessary to disassemble and clean the first and second filter plates on the right side, firstly close the first valve outside the right conveying pipe and open the first valve outside the left conveying pipe. The equipment can then filter through the first and second filter plates on the left side. At this time, the first and second filter plates on the right side can be pulled out for cleaning. When it is necessary to clean the first and second filter plates on the left side, close the first valve on the left side and open the first valve on the right side, thereby achieving cleaning without stopping the machine, improving the working efficiency of the equipment and enhancing the practicality of the device.

[0018] 2. The wet desulfurization and denitrification equipment for industrial flue gas is equipped with a liquid level observation component. When the liquid level inside the water tank drops, the float will drive the extension rod and indicator plate to move down. The staff can clearly observe the liquid level through the scale plate, which avoids the second delivery pump from burning out due to the liquid level being too low, and further improves the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0021] In the diagram: 1. Recycling bin; 2. Spray tank; 3. Drain pipe; 4. Filter assembly; 41. T-joint; 42. Filter box; 43. Feeding pipe; 44. First filter plate; 45. Second filter plate; 46. Feed guide pipe; 5. Water tank; 6. Liquid level observation assembly; 61. Scale plate; 62. Indicator needle plate; 63. Extension rod; 64. Float; 7. First transfer pump; 8. First connecting pipe; 9. Second connecting pipe; 10. Second transfer pump; 11. Third connecting pipe; 12. Feeding pipe. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-2A wet desulfurization and denitrification device for industrial flue gas includes a recovery tank 1. A discharge pipe extending to the rear of the inner wall of the recovery tank 1 is connected to the rear side of the tank. A second valve is fixedly connected to the outside of the discharge pipe. A spray tank 2 is fixedly connected to the top of the recovery tank 1. A drain pipe 3 is connected to the bottom wall of the spray tank 2. A filter assembly 4, which is fixedly connected to the outside of the drain pipe 3, is fixedly connected to the top of the recovery tank 1. The filter assembly 4 communicates with the inner top wall of the recovery tank 1 and includes a three-way pipe 41. A three-way pipe 41 is fixedly connected to the bottom of the drain pipe 3. Two filter boxes 42, symmetrically distributed on the left and right sides, are fixedly connected to the top of the recovery tank 1. One end of each three-way pipe 41 extends into the interior of one of the two filter boxes 42. The two feed pipes 43 are fixedly connected to the outside of each other. The inner walls of the two filter boxes 42 are provided with a first filter plate 44 extending to the top of each of them. The inner walls of the two filter boxes 42 are provided with a second filter plate 45 extending to the top of each of them. The pore diameter of the first filter plate 44 is larger than that of the second filter plate 45. The two second filter plates 45 are located on opposite sides of the two first filter plates 44. The bottom inner walls of the two filter boxes 42 are connected to a guide pipe 46 extending to the inside of the recovery box 1. The two guide pipes 46 are located on opposite sides of the two second filter plates 45. The inside of the filter box 42 is provided with a limiting groove that matches the first filter plate 44 and the second filter plate 45.

[0024] A water tank 5 is fixedly connected to the top of the recycling bin 1. A filling pipe extending into the water tank 5 is fixedly connected to the right side wall of the water tank 5. A third valve is fixedly connected to the outside of the filling pipe. A liquid level observation component 6 extending into the water tank 5 is movably connected to the top of the water tank 5. The liquid level observation component 6 includes a scale plate 61. A scale plate 61 is fixedly connected to the top of the water tank 5. An indicator needle plate 62 is slidably connected to the front side wall of the scale plate 61. An extension rod 63 extending into the water tank 5 is fixedly connected to the bottom of the indicator needle plate 62. A float ball 64 is fixedly connected to the bottom of the extension rod 63.

[0025] A first conveying pump 7 is fixedly connected to the top of the recycling bin 1. A first connecting pipe 8 extending into the inside of the recycling bin 1 is fixedly connected to the input end of the first conveying pump 7. A second connecting pipe 9 extending into the inside of the water tank 5 is fixedly connected to the output end of the first conveying pump 7. A second conveying pump 10 is fixedly connected to the top of the water tank 5. A third connecting pipe 11 extending into the inside of the water tank 5 is fixedly connected to the input end of the second conveying pump 10. A conveying pipe 12 extending into the inside of the spray tank 2 is fixedly connected to the output end of the second conveying pump 10.

[0026] It is worth noting that the first transfer pump 7 and the second transfer pump 10 mentioned in this application are both externally connected to control switches and drive power supplies. Furthermore, the first transfer pump 7 and the second transfer pump 10 are conventional and known equipment. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all connected by conventional means such as bolts, rivets, and welding that are mature in the prior art. Moreover, the machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in the description belong to the prior art known to those skilled in the art. At the same time, the specific structure and working principle of the spray tank 2 are described in detail in the patent document with the authorization number "CN222518238U" and the name "A desulfurization and denitrification flue gas treatment device". Therefore, it will not be described in detail here.

[0027] In summary, this wet desulfurization and denitrification equipment for industrial flue gas, by setting up filter components 4, allows for easy disassembly and cleaning of the right-side first filter plate 44 and second filter plate 45. First, the first valve outside the right-side conveying pipe 43 is closed, and the first valve outside the left-side conveying pipe 43 is opened. The equipment can then filter through the left-side first filter plate 44 and second filter plate 45, allowing the right-side first filter plate 44 and second filter plate 45 to be removed for cleaning. Similarly, when cleaning the left-side first filter plate 44 and second filter plate 45, the left-side first valve is closed and the right-side first valve is opened, enabling cleaning without shutting down the machine. This improves the equipment's efficiency and practicality. Furthermore, by setting up a liquid level observation component 6, when the liquid level inside the water tank 5 drops, the float 64 will cause the extension rod 63 and indicator plate 62 to move downwards. Operators can clearly observe the liquid level through the scale plate 61, preventing the second conveying pump 10 from burning out due to excessively low liquid levels. This further enhances the equipment's practicality and solves the problem of needing to stop the equipment for cleaning multiple filters, which reduces its efficiency.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wet desulfurization and denitrification device for industrial flue gas, comprising a recovery tank (1), characterized in that: The top of the recycling tank (1) is equipped with a spray tank (2), and the inner bottom wall of the spray tank (2) is equipped with a drain pipe (3). The top of the recycling tank (1) is equipped with a filter assembly (4) fixedly connected to the outside of the drain pipe (3). The filter assembly (4) is connected to the inner top wall of the recycling tank (1). The top of the recycling tank (1) is equipped with a water tank (5), and the top of the water tank (5) is equipped with a liquid level observation assembly (6) extending into its interior. The top of the recycling tank (1) is equipped with a first transfer pump (7). A first connecting pipe (8) is provided at the input end of a delivery pump (7) and extends into the inside of a recycling tank (1). A second connecting pipe (9) is provided at the output end of the first delivery pump (7) and extends into the inside of a water tank (5). A second delivery pump (10) is provided at the top of the water tank (5). A third connecting pipe (11) is provided at the input end of the second delivery pump (10) and extends into the inside of the water tank (5). A delivery pipe (12) is provided at the output end of the second delivery pump (10) and extends into the inside of a spray tank (2). The filter assembly (4) includes a three-way pipe (41). The bottom of the drain pipe (3) is provided with a three-way pipe (41). The top of the recycling box (1) is provided with two filter boxes (42) that are symmetrically distributed on the left and right. The left and right side walls of the three-way pipe (41) are provided with a conveying pipe (43) that extends into the two filter boxes (42) respectively. The inner walls of the two filter boxes (42) are provided with a first filter plate (44) that extends into its top. The inner walls of the two filter boxes (42) are provided with a second filter plate (45) that extends into its top. The two second filter plates (45) are located on opposite sides of the two first filter plates (44). The bottom inner walls of the two filter boxes (42) are provided with a guide pipe (46) that extends into the recycling box (1) respectively. The two guide pipes (46) are located on opposite sides of the two second filter plates (45). The liquid level observation component (6) includes a scale plate (61). The scale plate (61) is provided on the top of the water tank (5). An indicator plate (62) is provided on the front side wall of the scale plate (61). An extension rod (63) is provided at the bottom of the indicator plate (62) with one end extending into the interior of the water tank (5). A float ball (64) is provided at the bottom of the extension rod (63).

2. The industrial flue gas wet desulfurization and denitrification equipment according to claim 1, characterized in that: Both of the conveying pipes (43) are fixedly connected to the outside of a first valve.

3. The industrial flue gas wet desulfurization and denitrification equipment according to claim 1, characterized in that: The inner wall of the recycling bin (1) is connected to a discharge pipe extending to its rear end, and a second valve is fixedly connected to the outside of the discharge pipe.

4. The wet desulfurization and denitrification equipment for industrial flue gas according to claim 1, characterized in that: The filter box (42) has a limiting groove inside that is adapted to the first filter plate (44) and the second filter plate (45).

5. The industrial flue gas wet desulfurization and denitrification equipment according to claim 1, characterized in that: The pore size inside the first filter plate (44) is larger than the pore size inside the second filter plate (45).

6. The industrial flue gas wet desulfurization and denitrification equipment according to claim 1, characterized in that: The right side wall of the water tank (5) is fixedly connected to a material injection pipe with one end extending into it, and a third valve is fixedly connected to the outside of the material injection pipe.

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