Wet deacidification device of hazardous waste incineration disposal system

Abstract

The utility model provides a hazardous waste incineration disposal system wet deacidification device which comprises a tower body, the lower end of the tower body is fixedly connected with an air inlet pipe, the air inlet pipe is located on the lower surface of an inner cavity of the tower body and symmetrically connected with exhaust pipes, and the middle of the inner cavity of the tower body is fixedly connected with a filtering assembly. A flow guide assembly fixedly connected with an inner cavity of the tower body is located above the filtering assembly, the upper end of the inner cavity of the tower body is fixedly connected with a lower spraying assembly and an upper spraying assembly respectively, the lower spraying assembly and the upper spraying assembly are communicated with a liquid storage tank through liquid conveying pipes, and meanwhile the flow guide assembly is composed of a lower flow distribution plate, a middle guide plate and an upper flow distribution plate; the filter assembly is composed of a fixing frame and filter cloth. Through the cooperation of the gas inlet pipe, the exhaust pipe, the filtering assembly, the flow guide assembly, the lower spraying assembly and the upper spraying assembly, the residence time of flue gas in the tower body can be effectively prolonged, so that the gas-liquid contact effect is enhanced in an auxiliary manner, and the flue gas deacidification effect of the device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of hazardous waste treatment technology, specifically to a wet deacidification device for a hazardous waste incineration treatment system. Background Technology

[0002] Incineration is an important method for treating hazardous waste, enabling rapid reduction, harmlessness, and resource recovery. However, the flue gas produced after incineration is one of the main sources of secondary pollution that may occur during the incineration process. The treatment of acidic gases is an important part of flue gas purification technology. Based on whether water is added during the deacidification process and the dry or wet state of the deacidification products, it can be divided into three types: wet, dry, and semi-dry methods. After incineration, the flue gas undergoes quenching and baghouse dust collection for deacidification. Wet deacidification involves adding alkaline solution to a scrubbing tower to remove acidic gases.

[0003] A search revealed a prior art wet desulfurization device for a hazardous waste incineration line (publication number: CN210601646U), which describes "a scrubbing tower, with a flue gas inlet and a stirring motor on the left side wall of the scrubbing tower, a stirring shaft on the right side of the stirring motor, stirring blades on the outer wall of the stirring shaft, a feed inlet, a water inlet pipe, and a detection pipe on the right side wall of the scrubbing tower, and a liquid outlet pipe at the bottom of the scrubbing tower. The bottom of the liquid outlet pipe is connected to a waste liquid outlet pipe and a circulation pipe via a tee fitting. The left side of the end of the circulation pipe extending into the inner cavity of the scrubbing tower is connected to a water distribution pipe, and the bottom outlet of the water distribution pipe is equipped with an atomizing spray." The washing tower has a demister inside its inner cavity, an exhaust port at the top, and a liquefaction device and an activated carbon layer inside the exhaust port. This device can improve the service life of the activated carbon layer, reduce its replacement frequency, lower labor and usage costs, and significantly reduce flue gas treatment costs. However, in actual use, after the flue gas enters the washing tower, it quickly exits from the exhaust port, and the flue gas flows rapidly and unevenly within the tower, preventing it from fully contacting the alkaline solution. This results in the device failing to achieve a good deacidification effect on the flue gas. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a wet acid removal device for a hazardous waste incineration system is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a wet desulfurization device for a hazardous waste incineration system is provided, comprising: a tower body, an exhaust pipe connected to the upper surface of the tower body, and a recovery and regeneration component connected to the lower surface of the tower body via a drain pipe. The recovery and regeneration component is connected to a storage tank. A demisting liquefaction component is fixedly connected to the upper end of the tower body's internal cavity. An exhaust pipe is fixedly connected to the lower end of the tower body's internal cavity on the lower surface of the tower body's internal cavity. A filter component is fixedly connected to the middle of the tower body's internal cavity. A flow guiding component is fixedly connected to the internal cavity of the tower body and is located above the filter component. A lower spray component and an upper spray component are fixedly connected to the upper end of the tower body's internal cavity, respectively. The lower spray component and the upper spray component are connected to the storage tank via a liquid delivery pipe. The flow guiding component consists of a lower diverter plate, a middle guide plate, and an upper diverter plate. The filter component consists of a fixed frame and a filter cloth.

[0006] Preferably, the air inlet pipe has a square cylindrical structure, and the two sets of exhaust pipes fixedly connected to the lower surface of the air inlet pipe have an L-shaped structure. The two sets of exhaust pipes are centrally symmetrically distributed inside the tower body, and the lower bent parts of the exhaust pipes are immersed in the alkaline solution filled at the bottom of the inner cavity of the tower body.

[0007] Preferably, the filter assembly is cylindrical in shape, and the fixing frame in the filter assembly is cylindrical in shape. Three sets of filter cloths are fixedly connected at equal intervals from bottom to top on the inner side of the fixing frame. All three sets of filter cloths are circular in shape, and the mesh size of the three sets of filter cloths decreases sequentially from bottom to top. The drainage ring fixedly connected to the upper surface of the fixing frame is annular in shape.

[0008] Preferably, the flow guiding assembly has an overall cylindrical structure, and the lower flow divider, middle guide plate and upper flow divider inside the flow guiding assembly all have circular structures. The surfaces of the upper flow divider and the lower flow divider are evenly provided with multiple sets of through holes, which are circular in structure. At the same time, the through holes provided on the surfaces of the upper flow divider and the lower flow divider are staggered.

[0009] Preferably, a guide groove is formed on the surface of the middle guide plate corresponding to the position of the through hole. The guide groove has a square structure, and the through holes of the upper and lower diverter plates are connected through the corresponding guide grooves. At the same time, the cross-section formed by the combination of the through hole and the guide groove has a U-shaped structure.

[0010] Preferably, both the lower spray assembly and the upper spray assembly are composed of a main liquid distribution plate and a branch liquid distribution plate, and the lower spray assembly is located below the upper spray assembly. At the same time, the lower spray assembly and the upper spray assembly are distributed perpendicularly to each other in opposite directions, and the two are combined to form a grid-shaped structure.

[0011] Preferably, the main liquid distribution plate has a rectangular structure, the upper surface of the main liquid distribution plate is convex in an arc shape, and multiple groups of branch liquid distribution plates are fixedly connected in parallel at equal intervals along the length direction on both sides of the main liquid distribution plate. Multiple groups of atomizing nozzles are fixedly connected at equal intervals on the lower surfaces of the main liquid distribution plate and the branch liquid distribution plates. At the same time, the main liquid distribution plate and the branch liquid distribution plates are combined together to form a cross-shaped structure.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the cooperation of the air inlet pipe and the exhaust pipe, the flue gas injected into the tower body can first contact the alkaline solution inside it, realizing preliminary deacidification treatment. Through the cooperation of the filtering component, the diversion component, the lower spraying component and the upper spraying component, the residence time of the flue gas inside the tower body can be effectively extended, and the uniformity of the flue gas flow inside the tower body can also be enhanced, so as to ensure that the flue gas can fully contact the alkaline solution and enhance the deacidification effect of the device on the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 It is a top view schematic diagram of the diversion component of an embodiment of the present utility model.

[0015] Figure 3 It is a top view schematic diagram of the upper spraying component and the lower spraying component of an embodiment of the present utility model.

[0016] Figure 4 It is a sectional structure schematic diagram of the filtering component of an embodiment of the present utility model.

[0017] In the figure: 1, tower body; 2, exhaust pipe; 3, air inlet pipe; 4, filtering component; 5, drainage ring; 6, diversion component; 7, lower spraying component; 8, upper spraying component; 9, demisting and liquefying component; 10, air outlet pipe; 11, liquid storage tank; 12, recycling and regeneration component; 13, filter cloth; 14, fixing frame; 15, lower diversion plate; 16, middle guiding plate; 17, upper diversion plate; 18, branch liquid distribution plate; 19, main liquid distribution plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Refer to Figures 1 to 4As shown, this utility model provides a wet desulfurization device for a hazardous waste incineration treatment system, comprising: a tower body 1, an exhaust pipe 10 connected to the upper surface of the tower body 1, and a recovery and regeneration component 12 connected to the lower surface of the tower body 1 via a drain pipe. The recovery and regeneration component 12 is connected to a storage tank 11. A demisting liquefaction component 9 is fixedly connected to the upper end of the inner cavity of the tower body 1. An exhaust pipe 3 is fixedly connected to the lower end of the tower body 1. An exhaust pipe 2 is symmetrically connected to the lower surface of the inner cavity of the tower body 1. A filter component 4 is fixedly connected to the middle of the inner cavity of the tower body 1. A flow guiding component 6 is fixedly connected to the inner cavity of the tower body 1 above the filter component 4. A lower spray component 7 and an upper spray component 8 are fixedly connected to the upper end of the inner cavity of the tower body 1. The lower spray component 7 and the upper spray component 8 are connected to the storage tank 11 via a delivery pipe. The flow guiding component 6 is composed of a lower diverter plate 15, a middle guide plate 16, and an upper diverter plate 17. The filter component 4 is composed of a fixed frame 14 and a filter cloth 13.

[0019] In this embodiment, hazardous waste, after being treated by the incineration system, generates corresponding flue gas. This flue gas is injected into the tower body 1 of the wet deacidification device through the inlet pipe 3. First, the liquid pump switch inside the storage tank 11 is activated. The liquid pump pumps the alkaline solution in the storage tank 11 into the lower spray assembly 7 and the upper spray assembly 8 through the delivery pipe. The atomizing nozzles of the lower spray assembly 7 and the upper spray assembly 8 spray the alkaline solution in an atomized form. The alkaline solution will pass through the flow guide assembly 6 and wet the filter cloth 13 in the filter assembly 4, thus preparing the wet deacidification device for deacidification. Afterward, the flue gas in the inlet pipe 3 is injected into the alkaline solution at the bottom of the inner cavity of the tower body 1 through the exhaust pipe 2, achieving the first contact between gas and liquid, which can remove solid particles in the flue gas. The system performs preliminary filtration and initial deacidification of acidic gases carried in the flue gas. As the flue gas moves upward away from the alkaline solution, it passes through three layers of filter cloth 13 soaked in alkaline solution, which further enhances the gas-liquid contact effect and filters out solid particles carried in the flue gas. The flow guiding component 6 extends the flow time of the flue gas inside the tower body 1 and makes the flue gas flow evenly inside the tower body 1, enhancing the contact effect between the flue gas and the atomized alkaline solution. This helps to enhance the deacidification effect of the atomized alkaline solution sprayed by the lower spray component 7 and the upper spray component 8. After being treated by the demisting liquefaction component 9, the flue gas can be discharged through the exhaust pipe 2, reducing the pollution of the flue gas.

[0020] In a preferred embodiment, the intake pipe 3 has a square cylindrical structure, and the two sets of exhaust pipes 2 fixedly connected to the lower surface of the intake pipe 3 are both L-shaped structures. The two sets of exhaust pipes 2 are centrally symmetrically distributed inside the tower body 1, and the lower bent parts of the exhaust pipes 2 are immersed in the alkaline solution filled at the bottom of the inner cavity of the tower body 1.

[0021] In this embodiment, as Figure 1The structure and position of the exhaust pipe 2 enable the flue gas to help rotate the alkaline solution inside the tower body 1 when it is injected into the tower body 1, thereby improving the uniformity of the alkaline solution and enhancing the gas-liquid contact effect, thus enhancing the deacidification effect of the alkaline solution on the flue gas.

[0022] In a preferred embodiment, the filter assembly 4 has a cylindrical structure, and the fixing frame 14 in the filter assembly 4 has a cylindrical structure. Three sets of filter cloths 13 are fixedly connected at equal intervals from bottom to top on the inner side of the fixing frame 14. All three sets of filter cloths 13 have a circular structure, and the mesh size of the three sets of filter cloths 13 decreases sequentially from bottom to top. The drainage ring 5 fixedly connected to the upper surface of the fixing frame 14 has a circular structure.

[0023] In this embodiment, as Figure 1 and Figure 4 The filter cloth 13 is made of acid and alkali resistant material, which allows the filter cloth 13 to perform corresponding auxiliary filtration of flue gas while being soaked in alkaline solution. In the process of filtering flue gas, it can also improve the gas-liquid contact effect and enhance the deacidification effect of the device on flue gas.

[0024] In a preferred embodiment, the flow guiding component 6 has an overall cylindrical structure, and the lower flow divider 15, the middle guide plate 16 and the upper flow divider 17 inside the flow guiding component 6 are all circular structures. The surfaces of the upper flow divider 17 and the lower flow divider 15 are evenly provided with multiple sets of through holes, which are circular structures. At the same time, the through holes provided on the surfaces of the upper flow divider 17 and the lower flow divider 15 are staggered.

[0025] In this embodiment, as Figure 1 and Figure 2 The through holes of the upper diverter plate 17 and the lower diverter plate 15 in the flow guiding component 6 are staggered, which can disperse and reorganize the flue gas flowing inside the tower body 1, so that the flue gas can flow evenly inside the tower body 1, thereby improving the deacidification effect of the subsequent atomized alkaline solution on the flue gas and ensuring that the gas and liquid can fully contact.

[0026] In a preferred embodiment, a guide groove is provided on the surface of the middle guide plate 16 at the position corresponding to the through hole. The guide groove has a square structure, and the through holes of the upper diverter plate 17 and the lower diverter plate 15 are connected through the corresponding guide groove. At the same time, the cross section formed by the combination of the through hole and the guide groove has a U-shaped structure.

[0027] In this embodiment, as Figure 1 and Figure 2 The opening of the guide channel can help extend the flow path of flue gas inside tower 1 and prolong the residence time of flue gas inside tower 1, thereby helping to improve the gas-liquid contact effect and enhance the deacidification effect of the device on flue gas.

[0028] As a preferred embodiment, both the lower spray component 7 and the upper spray component 8 are composed of a main liquid distribution plate 19 and a branch liquid distribution plate 18. The lower spray component 7 is located below the upper spray component 8. At the same time, the lower spray component 7 and the upper spray component 8 are vertically distributed in different planes, and the two are combined to form a cross-shaped structure.

[0029] In this embodiment, as Figure 1 and Figure 3 , the setting structures of the lower spray component 7 and the upper spray component 8 can effectively enhance the uniformity of the distribution of the atomized alkaline liquid inside the tower body 1, thereby assisting in enhancing the sufficiency of the contact between the atomized alkaline liquid and the flue gas, and improving the acid removal effect of the device on the flue gas.

[0030] As a preferred embodiment, the main liquid distribution plate 19 has a rectangular structure. The upper surface of the main liquid distribution plate 19 is convex in an arc shape. Along the length direction on both sides of the main liquid distribution plate 19, multiple groups of branch liquid distribution plates 18 are fixedly connected in parallel at equal intervals. Multiple groups of atomizing nozzles are fixedly connected at equal intervals on the lower surfaces of the main liquid distribution plate 19 and the branch liquid distribution plates 18. At the same time, the main liquid distribution plate 19 and the branch liquid distribution plates 18 are combined to form a structure like the Chinese character 'feng' (丰).

[0031] In this embodiment, as Figure 1 and Figure 3 , the arc-shaped structure on the upper surface of the main liquid distribution plate 19 can effectively prevent liquid residue from accumulating on the surface, thereby assisting in reducing the probability of accidental corrosion of the main liquid distribution plate 19. At the same time, the upper surface of the branch liquid distribution plate 18 is also convex in an arc shape.

[0032] The wet desulfurization device of the hazardous waste incineration disposal system of the present utility model can effectively extend the residence time of the flue gas inside the tower body 1 through the cooperation of the air inlet pipe 3, the exhaust pipe 2, the filtering component 4, the guiding component 6, the lower spray component 7 and the upper spray component 8, thereby assisting in enhancing the effect of gas-liquid contact, and further improving the acid removal effect of the device on the flue gas. At the same time, the demisting and liquefying component 9, the recycling and regeneration component 12 and the liquid storage tank 11 are all common brand models on the market, and the relevant components inside the device are made of corresponding corrosion-resistant materials.

Claims

1. A wet acid removal device for a hazardous waste incineration treatment system, comprising: The tower body (1) has an exhaust pipe (10) connected to its upper surface, and a recovery and regeneration component (12) connected to its lower surface via a drain pipe. The recovery and regeneration component (12) is connected to a storage tank (11), and a demisting liquefaction component (9) is fixedly connected to the upper end of the inner cavity of the tower body (1). The tower body (1) is characterized by a fixed air inlet pipe (3) connected to its lower end, which is symmetrically connected to exhaust pipes (2) on the lower surface of the inner cavity of the tower body (1). The air inlet pipe (3) has a square cylindrical structure, and the two sets of exhaust pipes (2) fixedly connected to the lower surface of the air inlet pipe (3) are... The structure is L-shaped, and the two sets of exhaust pipes (2) are centrally symmetrically distributed inside the tower body (1). At the same time, the lower bends of the exhaust pipes (2) are immersed in the alkaline solution filled at the bottom of the inner cavity of the tower body (1). The filter assembly (4) is fixedly connected to the middle of the inner cavity of the tower body (1), and the flow guiding assembly (6) is fixedly connected to the inner cavity of the tower body (1) above the filter assembly (4). The lower spray assembly (7) and the upper spray assembly (8) are fixedly connected to the upper end of the inner cavity of the tower body (1). The lower spray assembly (7) and the upper spray assembly (8) are vertically distributed in opposite directions. The two are combined to form a well. The structure is U-shaped. The lower spray assembly (7) and the upper spray assembly (8) are connected to the storage tank (11) through the infusion pipe. At the same time, the flow guiding assembly (6) is composed of a lower diverter plate (15), a middle guide plate (16) and an upper diverter plate (17). The flow guiding assembly (6) is cylindrical in shape. The lower diverter plate (15), the middle guide plate (16) and the upper diverter plate (17) inside the flow guiding assembly (6) are all circular. The surfaces of the upper diverter plate (17) and the lower diverter plate (15) are evenly provided with multiple sets of through holes, which are circular in shape. At the same time, the upper diverter plate (17) and the lower diverter plate (15) are circular in shape. The through holes on the surface of the flow plate (15) are staggered. The filter assembly (4) consists of a fixed frame (14) and filter cloth (13). The filter assembly (4) is cylindrical in shape. The fixed frame (14) in the filter assembly (4) is cylindrical in shape. Three sets of filter cloth (13) are fixedly connected at equal intervals from bottom to top on the inner side of the fixed frame (14). All three sets of filter cloth (13) are circular in shape. At the same time, the mesh size of the three sets of filter cloth (13) decreases from bottom to top. The flow-guiding ring (5) fixedly connected to the upper surface of the fixed frame (14) is annular in shape.

2. The wet acid removal device for a hazardous waste incineration system according to claim 1, characterized in that, The guide plate (16) has a guide groove corresponding to the position of the through hole on its surface. The guide groove has a square structure, and the through holes of the upper diversion plate (17) and the lower diversion plate (15) are connected through the corresponding guide groove. At the same time, the cross section formed by the combination of the through hole and the guide groove has a U-shaped structure.

3. The wet acid removal device for a hazardous waste incineration system according to claim 1, characterized in that, Both the lower spray assembly (7) and the upper spray assembly (8) are composed of a main liquid distribution plate (19) and a branch liquid distribution plate (18), and the lower spray assembly (7) is located below the upper spray assembly (8).

4. The wet acid removal device for a hazardous waste incineration treatment system according to claim 3, characterized in that, The main liquid distribution plate (19) has a rectangular structure. The upper surface of the main liquid distribution plate (19) is convex in an arc shape. On both sides of the main liquid distribution plate (19), a plurality of groups of branch liquid distribution plates (18) are fixedly connected in parallel at equal intervals along the length direction. A plurality of groups of atomizing nozzles are fixedly connected at equal intervals on the lower surfaces of the main liquid distribution plate (19) and the branch liquid distribution plates (18). At the same time, the main liquid distribution plate (19) and the branch liquid distribution plates (18) are combined together to form a structure in the shape of the Chinese character '丰'.

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