Wet dust removal and desulfurization device

Abstract

The utility model discloses a wet dust removal and desulfurization device, and belongs to the technical field of flue gas desulfurization. Comprising a desulfurization tower, an inner cavity of the desulfurization tower is filled with desulfurization slurry, a settling chamber is arranged at the bottom of the inner cavity of the desulfurization tower, and the desulfurization tower and the settling chamber are isolated through a filter screen plate. According to the utility model, flue gas is directly introduced into desulfurization slurry, dust in the flue gas is directly absorbed by utilizing the desulfurization slurry, a dust absorption device does not need to be added, the device structure is optimized, the structure is simple, the installation is convenient, the flue gas in the bubble net cylinder is extruded by utilizing the piston and the scraper which do reciprocating motion, and the flue gas is accelerated to enter the desulfurization slurry from the bubble net cylinder; the bubble net cylinder is used for bubbling the flue gas, so that the absorption effect of the flue gas is further improved, and the problem of pipeline blockage can be effectively avoided through solid-liquid separation of vulcanized precipitates and desulfurization slurry.

Description

Technical Field

[0001] The utility model relates to a wet dust removal and desulfurization device, belonging to the technical field of flue gas desulfurization. Background Art

[0002] Industrial production often produces a large amount of flue gas, such as power generation, smelting, heating, etc. The flue gas carries a large number of harmful substances, among which SO2 is one of the main components. If it is not treated and directly discharged into the atmosphere, it will not only form acid rain and damage the environment, but also cause a variety of respiratory diseases. In recent years, with the continuous strengthening of environmental governance calls, the state has put forward increasingly stringent emission standards for the SO2 content in industrial flue gas.

[0003] The desulfurization tower is a commonly used flue gas desulfurization equipment. The existing desulfurization tower usually has a spray layer set in the upper part of the desulfurization tower to spray desulfurization slurry downward. The flue gas enters from the lower side of the desulfurization tower, rises in the desulfurization tower, and reacts chemically with the sprayed desulfurization slurry.

[0004] As the existing devices are used, the shortcomings of the technology are gradually exposed, mainly in the following aspects:

[0005] First, the existing device is equipped with a dust removal device, which makes the overall structure larger and difficult to install in production;

[0006] Second, the flue gas is absorbed by the sprayed desulfurization slurry, but the desulfurization slurry cannot effectively cover and contact the flue gas, resulting in poor flue gas desulfurization effect;

[0007] Third, the desulfurization slurry that absorbs the flue gas repeatedly flows into the spray pipe through the circulation pump, and the sulfide precipitates in the desulfurization slurry will cause blockage of the nozzle and the pipe.

[0008] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide a wet dust removal and desulfurization device with a simple overall structure, good flue gas desulfurization effect and no pipeline blockage problem in view of the above shortcomings.

[0010] An optimization scheme, a wet dust removal and desulfurization device, comprises a desulfurization tower, the inner cavity of the desulfurization tower is filled with desulfurization slurry, a sedimentation chamber is provided at the bottom of the inner cavity of the desulfurization tower, and the desulfurization tower and the sedimentation chamber are isolated and arranged by a filter screen plate;

[0011] The upper part of the filter screen is provided with a bubble net cylinder, the bottom of the inner cavity of the bubble net cylinder is provided with a piston, the bottom of the piston is fixedly connected with a hydraulic cylinder, and the hydraulic cylinder is arranged on the bottom outer wall of the desulfurization tower;

[0012] The upper part of the piston is rotatably provided with a sleeve, the sleeve is inserted with a square rod, the square rod is fixedly connected with a motor, and the motor is fixedly arranged on the upper part of the desulfurization tower;

[0013] The outer wall of the sleeve is symmetrically provided with a plurality of evenly distributed scrapers, and the outer wall of the scraper is provided with a plurality of evenly distributed bubble holes.

[0014] Furthermore, the side wall of the scraper is arranged to fit the inner wall of the bubble net tube.

[0015] Furthermore, the piston rod of the hydraulic oil cylinder is fixedly connected to a connecting rod, the connecting rod and the filter screen plate are slidably arranged, and the end of the connecting rod is fixedly connected to the bottom of the piston.

[0016] Furthermore, an air inlet pipe is provided on the side wall of the desulfurization tower, and the end of the air inlet pipe is connected to the side wall of the bubble net tube.

[0017] Furthermore, a one-way valve is provided at the front end of the air intake pipe.

[0018] Furthermore, a breathable mesh plate is provided at the upper part of the inner cavity of the desulfurization tower, a conical cylinder is fixedly buckled at the upper part of the desulfurization tower, and an air outlet pipe is provided at the upper part of the conical cylinder.

[0019] Furthermore, a mounting plate is fixedly provided on the upper portion of the air outlet pipe via a plurality of evenly distributed support rods, and the motor is fixedly provided on the mounting plate.

[0020] Furthermore, an injection pipe is provided on the upper side wall of the desulfurization tower, and a valve is provided on the injection pipe. A discharge pipe is provided on the lower side wall of the precipitation chamber, and a valve is provided on the discharge pipe.

[0021] Furthermore, a liquid level gauge is provided on the upper side wall of the desulfurization tower, and the liquid level gauge is arranged at the lower part of the air permeable mesh plate.

[0022] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0023] The utility model directly introduces the flue gas into the desulfurization slurry, and uses the desulfurization slurry to directly absorb the dust in the flue gas, without adding a dust absorption device, optimizing the device structure, having a simple structure and being easy to install;

[0024] The reciprocating piston and scraper are used to squeeze the flue gas in the bubble net cylinder, accelerating the flue gas from the bubble net cylinder into the desulfurization slurry, and the bubble net cylinder bubbles the flue gas, further improving the absorption effect of the flue gas;

[0025] The solid-liquid separation of sulfide precipitates and desulfurization slurry can effectively prevent pipeline blockage problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the wet dust removal and desulfurization device of the utility model;

[0027] Figure 2 It is a schematic cross-sectional structure diagram of the wet dust removal and desulfurization device of the utility model;

[0028] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of local A;

[0029] In the figure, 1- desulfurization tower, 2- sedimentation chamber, 3- filter screen, 4- bubble screen cylinder, 5- piston, 6- hydraulic cylinder, 7- casing, 8- square rod, 9- motor, 10- scraper, 11- bubble hole, 12- connecting rod, 13- air inlet pipe, 14- one-way valve, 15- breathable screen, 16- conical cylinder, 17- air outlet pipe, 18- support rod, 19- mounting plate, 20- injection pipe, 21- valve, 22- discharge pipe, 23- liquid level meter. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] Examples, such as Figure 1 , 2 As shown in FIG. 3 , the utility model provides a wet dust removal and desulfurization device, comprising a desulfurization tower 1, the inner cavity of the desulfurization tower 1 is filled with desulfurization slurry, a sedimentation chamber 2 is provided at the bottom of the inner cavity of the desulfurization tower 1, and the desulfurization tower 1 and the sedimentation chamber 2 are isolated and arranged by a filter screen plate 3;

[0034] The upper part of the filter screen plate 3 is provided with a bubble net cylinder 4, the inner bottom of the bubble net cylinder 4 is provided with a piston 5, the bottom of the piston 5 is fixedly connected with a hydraulic cylinder 6, and the hydraulic cylinder 6 is arranged on the bottom outer wall of the desulfurization tower 1;

[0035] The upper part of the piston 5 is rotatably provided with a sleeve 7, the sleeve 7 is inserted with a square rod 8, the square rod 8 is fixedly connected with a motor 9, and the motor 9 is fixedly arranged on the upper part of the desulfurization tower 1;

[0036] The outer wall of the sleeve 7 is symmetrically provided with a plurality of evenly distributed scrapers 10 , and the outer wall of the scraper 10 is provided with a plurality of evenly distributed bubble holes 11 .

[0037] The side wall of the scraper 10 is arranged to fit the inner wall of the bubble net tube 4 .

[0038] The piston rod of the hydraulic cylinder 6 is fixedly connected with a connecting rod 12 , the connecting rod 12 and the filter screen plate 3 are slidably arranged, and the end of the connecting rod 12 is fixedly connected with the bottom of the piston 5 .

[0039] An air inlet pipe 13 is provided on the side wall of the desulfurization tower 1 , and the end of the air inlet pipe 13 is connected to the side wall of the bubble net tube 4 .

[0040] A one-way valve 14 is provided at the front end of the air inlet pipe 13 .

[0041] An air-permeable mesh plate 15 is provided at the upper part of the inner cavity of the desulfurization tower 1 . A conical cylinder 16 is fixedly buckled at the upper part of the desulfurization tower 1 . An air outlet pipe 17 is provided at the upper part of the conical cylinder 16 .

[0042] A mounting plate 19 is fixedly disposed on the upper portion of the air outlet pipe 17 via a plurality of evenly distributed support rods 18 , and the motor 9 is fixedly disposed on the mounting plate 19 .

[0043] The upper side wall of the desulfurization tower 1 is provided with an injection pipe 20 , and the injection pipe 20 is provided with a valve 21 . The lower side wall of the precipitation chamber 2 is provided with a discharge pipe 22 , and the discharge pipe 22 is provided with a valve 21 .

[0044] The upper side wall of the desulfurization tower 1 is provided with a liquid level gauge 23 , and the liquid level gauge 23 is arranged at the lower part of the air permeable mesh plate 15 .

[0045] The working principle of this utility model:

[0046] The desulfurization slurry prepared by the lime reagent is injected into the desulfurization tower 1 through the injection pipe 20. The liquid level meter 23 controls the liquid level of the desulfurization slurry to prevent the desulfurization slurry from submerging the air-permeable mesh plate 15. The valve 21 of the injection pipe 20 is closed, and the flue gas is introduced into the air inlet pipe 13. The flue gas enters the bubble mesh tube 4. The hydraulic cylinder 6 and the motor 9 are started. The hydraulic cylinder 6 drives the piston 5 and the scraper 10 to reciprocate up and down in the bubble mesh tube 4. The piston 5 can quickly press the flue gas into the desulfurization slurry in the inner cavity of the desulfurization tower 1.

[0047] The motor 9 drives the scraper 10 to rotate by using the sleeve 7 and the square rod 8 without affecting the up and down reciprocating motion of the scraper 10 , and the scraper 10 scrapes and cleans the inner cavity of the bubble net tube 4 .

[0048] When the piston 5 moves to the bottom of the bubble net cylinder 4, the scraper 10 uses the bubble holes 11 to break up the smoke entering the bubble net cylinder 4 during rotation to form small bubbles, thereby improving the smoke absorption effect.

[0049] The desulfurization slurry absorbs sulfur dioxide gas in the flue gas, and the generated calcium sulfide precipitate enters the precipitation chamber 2 through the filter screen plate 3. The staff opens the valve 21 of the discharge pipe 22, and the calcium sulfide precipitate is discharged through the discharge pipe 22.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0051] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. Wet dust removal and desulfurization device, characterized by: It comprises a desulfurization tower (1), the inner cavity of the desulfurization tower (1) is filled with desulfurization slurry, a sedimentation chamber (2) is provided at the bottom of the inner cavity of the desulfurization tower (1), and the desulfurization tower (1) and the sedimentation chamber (2) are isolated and arranged by a filter screen plate (3); A bubble net cylinder (4) is provided on the upper part of the filter screen plate (3); a piston (5) is provided at the bottom of the inner cavity of the bubble net cylinder (4); a hydraulic cylinder (6) is fixedly connected to the bottom of the piston (5); and the hydraulic cylinder (6) is arranged on the bottom outer wall of the desulfurization tower (1); The upper part of the piston (5) is rotatably provided with a sleeve (7), the sleeve (7) is inserted with a square rod (8), the square rod (8) is fixedly connected with a motor (9), and the motor (9) is fixedly arranged on the upper part of the desulfurization tower (1); The outer wall of the sleeve (7) is symmetrically provided with a plurality of evenly distributed scrapers (10), and the outer wall of the scraper (10) is provided with a plurality of evenly distributed bubble holes (11).

2. The wet dust removal and desulfurization device according to claim 1 is characterized in that: The side wall of the scraper (10) is arranged to fit the inner wall of the bubble net cylinder (4).

3. The wet dust removal and desulfurization device according to claim 1 is characterized in that: The piston rod of the hydraulic oil cylinder (6) is fixedly connected to a connecting rod (12), the connecting rod (12) and the filter screen plate (3) are slidably arranged through the connecting rod (12), and the end of the connecting rod (12) is fixedly connected to the bottom of the piston (5).

4. The wet dust removal and desulfurization device according to claim 1 is characterized in that: An air inlet pipe (13) is provided on the side wall of the desulfurization tower (1), and the end of the air inlet pipe (13) is connected to the side wall of the bubble net cylinder (4).

5. The wet dust removal and desulfurization device according to claim 4 is characterized in that: A one-way valve (14) is provided at the front end of the air inlet pipe (13).

6. The wet dust removal and desulfurization device according to claim 1 is characterized in that: A permeable mesh plate (15) is provided at the upper part of the inner cavity of the desulfurization tower (1), a conical cylinder (16) is fixedly fastened at the upper part of the desulfurization tower (1), and an air outlet pipe (17) is provided at the upper part of the conical cylinder (16).

7. The wet dust removal and desulfurization device according to claim 6 is characterized in that: A mounting plate (19) is fixedly mounted on the upper portion of the air outlet pipe (17) via a plurality of evenly distributed support rods (18), and the motor (9) is fixedly mounted on the mounting plate (19).

8. The wet dust removal and desulfurization device according to claim 1 is characterized in that: The upper side wall of the desulfurization tower (1) is provided with an injection pipe (20), and the injection pipe (20) is provided with a valve (21). The lower side wall of the precipitation chamber (2) is provided with a discharge pipe (22), and the discharge pipe (22) is provided with a valve (21).

9. The wet dust removal and desulfurization device according to claim 1 is characterized in that: The upper side wall of the desulfurization tower (1) is provided with a liquid level meter (23), and the liquid level meter (23) is arranged at the bottom of the air permeable mesh plate (15).

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