Dust collection and desulfurization equipment

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses dust collection and desulfurization equipment which comprises a pretreatment shell, and an adsorption shell and a separation shell which are connected end to end and communicated with each other are sequentially arranged on one side of the pretreatment shell; the dust collection assembly is arranged on the wall face of the pretreatment shell and used for collecting dust, the dust collection assembly comprises a filter plate and a collection box, a window is formed in the bottom of the pretreatment shell, the filter plate is detachably installed on the inner wall of the pretreatment shell and obliquely extends towards the window, and the collection box is fixedly installed at the bottom of the pretreatment shell and right faces the window; the tail gas is firstly dedusted, and then is desulfurized in a liquid spraying manner, so that powder in the tail gas can be separated from a desulfurized alkaline solution, the influence on recycled materials is reduced, air is filtered through an inclined filter plate, attachments can fall into a collection box after reaching a certain amount, and particulate matters in the tail gas are collected; and later recycling and reusing are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to a dust collection and desulfurization device. Background Technology

[0002] Existing electric furnace zinc powder smelting plants have a lot of dust and sulfides in their tail gas, making the treatment of electric furnace tail gas to meet standards increasingly important. However, if the existing wet dust removal and desulfurization facilities are simply used to treat electric furnace zinc powder tail gas, it will cause the metallic zinc powder and the alkaline desulfurization solution to mix, which is not conducive to the recovery and utilization of metallic zinc powder.

[0003] A search revealed a prior art dust collection and desulfurization device for electric furnace zinc powder tail gas (publication number: CN204365074U), comprising a liquid collection tank. The liquid collection tank has a liquid-separating tail gas channel in its middle section, dividing it into two separate tail gas treatment spaces: one for dust collection and the other for desulfurization. A tail gas cover plate is installed at the top of the liquid-separating tail gas channel. The upper part of the liquid collection tank is sequentially equipped with an inlet pipe, a primary scrubbing tower, a primary baffle plate, a primary Venturi scrubber, a secondary scrubbing tower, a secondary baffle plate, a secondary Venturi scrubber, and an exhaust pipe. The electric furnace zinc powder tail gas enters the primary scrubbing tower through the inlet pipe, then flows through the primary baffle plate into the primary Venturi scrubber for primary water washing and dust collection. After dust collection, the gas passes through the liquid-separating tail gas channel sequentially through the secondary scrubbing tower, the secondary baffle plate, and the secondary Venturi scrubber to complete the desulfurization process.

[0004] In existing technologies, dust removal and desulfurization are achieved through multi-stage treatment of exhaust gas. However, there is a lack of centralized collection of dust in the flue gas. The method of using clean water to collect dust requires multiple processes such as filtration, separation and drying for later recovery. The workload and process are large and complex for the later recovery operation. Therefore, there is room for optimization in the dust collection and scoring method.

[0005] Therefore, we propose a dust collection and desulfurization device. Utility Model Content

[0006] The present invention mainly addresses the technical problems of complex dust collection processes and large workloads mentioned above, and provides a dust collection and desulfurization device.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a dust collection and desulfurization device, comprising:

[0008] The pretreatment shell has an adsorption shell and a separation shell connected end to end and interconnected on one side.

[0009] A dust collection assembly is installed on the wall of the pretreatment housing for collecting dust. The dust collection assembly includes a filter plate and a collection box. A window is provided at the bottom of the pretreatment housing. The filter plate is detachably installed on the inner wall of the pretreatment housing and extends at an angle towards the window. The collection box is fixedly installed at the bottom of the pretreatment housing and faces the window.

[0010] The spray structure is installed inside the adsorption housing cavity for spraying liquid.

[0011] In a preferred embodiment of this utility model, the pretreatment shell is formed into a hollow rectangular box, and the filter plate is adapted to the pretreatment shell, with the filter plate extending obliquely from the top to the bottom of the pretreatment shell.

[0012] In a preferred embodiment of this utility model, the collection box is fixedly installed directly below the window, and the upper end of the collection box is flush with the bottom of the filter plate.

[0013] In a preferred embodiment of this utility model, the top of the pretreatment housing is provided with a slot for installing a filter plate, and a sealing cover is fixedly installed on the top of the filter plate. The sealing cover is locked and fixed to the pretreatment housing by screws.

[0014] In a preferred embodiment of this utility model, the spraying structure includes a clamp and a feeding pipe. The clamp is fixedly installed on the outer wall of the adsorption shell, and the feeding pipe is fixedly connected to the clamp. The clamp has a cavity, and a plurality of branch pipes are fixedly provided on the inner wall of the clamp. The branch pipes penetrate the adsorption shell and extend into the cavity of the adsorption shell.

[0015] In a preferred embodiment of this utility model, the adsorption shell is formed as a tube that tapers from both ends toward the middle, and the clamp is fixedly installed in the middle position of the adsorption shell.

[0016] In a preferred embodiment of the present invention, the spray structure further includes a guide fluid, which is fixedly installed inside the adsorption shell. The end of the guide fluid is formed into a cone, and the tip of the guide fluid faces the middle position of the adsorption shell.

[0017] Beneficial effects

[0018] This utility model provides a dust collection and desulfurization device. It has the following beneficial effects:

[0019] 1. This dust collection and desulfurization equipment first removes dust from the exhaust gas and then desulfurizes it by spraying liquid. This ensures that the powder in the exhaust gas is separated from the alkaline desulfurization solution, reducing the impact on the recovered materials. The air is filtered by an inclined filter plate, and the attached material will fall into the collection box after reaching a certain amount, realizing the collection of particulate matter in the exhaust gas, which is convenient for later recycling and reuse.

[0020] 2. This dust collection and desulfurization equipment inserts filter plates into slots and uses screws to lock the sealing cover to the pretreatment housing. A sealing gasket is provided between the sealing cover and the pretreatment housing to ensure airtightness. This facilitates the cleaning and replacement of filter plates and makes subsequent maintenance easier.

[0021] 3. This dust collection and desulfurization equipment, by setting up a clamp and a feeding pipe, the feeding pipe is connected to a spray pump. The spray pump sends the liquid in the water pool below the adsorption shell into the clamp, and sprays it through multiple branch pipes on the inner wall of the clamp to the middle section of the adsorption shell. Since the adsorption shell is large at both ends and small in the middle, the air is accelerated when passing through the middle section of the adsorption shell. Combined with the sprayed liquid, the air and liquid are fully mixed to achieve the desulfurization effect. The overall structure is compact and simple, and the operating cost is low.

[0022] 4. This dust collection and desulfurization equipment, by setting a bullet-shaped guide fluid, allows air to impact the tip of the guide fluid after being discharged from the middle section of the adsorption shell. The air is then squeezed and guided by the tip of the guide fluid, forming a jet at the tail end of the guide fluid, which further promotes the mixing of liquid and air. At the same time, it ensures the back pressure in the middle section of the adsorption shell, improves the treatment effect of liquid on sulfides in the exhaust gas, and prevents the exhaust gas from entering the vicinity of the gradually increasing opening end of the adsorption shell and forming turbulence, thus ensuring the efficiency of exhaust. Attached Figure Description

[0023] Figure 1 This is one of the overall perspective views of this utility model;

[0024] Figure 2 This is the second overall perspective view of the present utility model;

[0025] Figure 3 This is a cross-sectional view of the entire utility model;

[0026] Figure 4 This is a perspective view of the filter plate and sealing cap of this utility model;

[0027] Figure 5 This is a three-dimensional view of the fluid guide of this utility model.

[0028] Legend: 10. Pretreatment shell; 11. Adsorption shell; 12. Separation shell; 13. Filter plate; 14. Collection box; 131. Sealing cover; 20. Clamp; 21. Feed pipe; 22. Guide fluid. Detailed Implementation

[0029] A dust collection and desulfurization device, such as Figure 1 As shown, it includes:

[0030] The pretreatment shell 10 has an adsorption shell 11 and a separation shell 12 connected end to end and interconnected on one side.

[0031] like Figure 2 and Figure 3 As shown, a dust collection assembly is installed on the wall of the pretreatment housing 10 for collecting dust. The dust collection assembly includes a filter plate 13 and a collection box 14. A window is provided at the bottom of the pretreatment housing 10. The filter plate 13 is detachably installed on the inner wall of the pretreatment housing 10 and extends inclinedly towards the window. The collection box 14 is fixedly installed at the bottom of the pretreatment housing 10 and faces the window. The pretreatment housing 10 forms a hollow rectangular box. The filter plate 13 is adapted to the pretreatment housing 10. The filter plate 13 extends inclinedly from the top of the pretreatment housing 10 to the bottom. The collection box 14 is fixedly installed directly below the window. The upper end of the collection box 14 is flush with the bottom of the filter plate 13.

[0032] This solution primarily addresses the treatment of exhaust gas generated by zinc powder electric furnaces. The exhaust gas contains dust and a significant amount of sulfides. The proposed solution involves step-by-step treatment within the same device. Dust is collected in the pretreatment shell 10, while the adsorption shell 11 treats the sulfides. The separation shell 12 further separates air and impurities. The separation shell 12 can utilize existing cyclone separators; specific specifications are not detailed here. By first removing dust from the exhaust gas and then desulfurizing it through liquid injection, the powder in the exhaust gas is separated from the alkaline desulfurization solution, reducing the impact on the recovered materials. Air is filtered by the inclined filter plate 13, and once a certain amount of adhering material is collected, it falls into the collection box 14, thus collecting particulate matter in the exhaust gas for convenient subsequent recycling and reuse.

[0033] like Figure 4 As shown, the top of the pretreatment housing 10 has a slot for installing the filter plate 13. A sealing cover 131 is fixedly installed on the top of the filter plate 13. The sealing cover 131 is locked to the pretreatment housing 10 by screws. By inserting the filter plate 13 into the slot, the sealing cover 131 is locked to the pretreatment housing 10 by screws. A sealing gasket is provided between the sealing cover 131 and the pretreatment housing 10 to ensure sealing. This makes it easy to clean and replace the filter plate 13 and facilitates subsequent maintenance.

[0034] like Figure 3 As shown, the spray structure is installed inside the adsorption housing 11 for spraying liquid;

[0035] The spray structure includes a clamp 20 and a feeding pipe 21. The clamp 20 is fixedly installed on the outer wall of the adsorption housing 11, and the feeding pipe 21 is fixedly connected to the clamp 20. The clamp 20 has a cavity, and several branch pipes are fixedly provided on the inner wall of the clamp 20. The branch pipes pass through the adsorption housing 11 and extend into the cavity of the adsorption housing 11. The adsorption housing 11 forms a pipe that gradually tapers from both ends to the middle position. The clamp 20 is fixedly installed in the middle position of the adsorption housing 11.

[0036] By setting up a clamp 20 and a feeding pipe 21, the feeding pipe 21 is connected to a spray pump. The spray pump sends the liquid in the water tank below the adsorption shell 11 into the clamp 20. The liquid is then sprayed through multiple branch pipes on the inner wall of the clamp 20 to the middle section of the adsorption shell 11. Since the adsorption shell 11 is larger at both ends and smaller in the middle, the air is accelerated when it passes through the middle section of the adsorption shell 11. Combined with the sprayed liquid, the air and liquid are fully mixed to achieve the desulfurization effect. The overall structure is compact and simple, and the operating cost is low.

[0037] like Figure 3 and Figure 5 As shown, the injection structure also includes a guide fluid 22, which is fixedly installed inside the adsorption housing 11. The end of the guide fluid 22 forms a cone, and the tip of the guide fluid 22 faces the middle position of the adsorption housing 11. By setting the bullet-shaped guide fluid 22, the air discharged from the middle section of the adsorption housing 11 will impact the tip of the guide fluid 22. After being squeezed and guided by the tip of the guide fluid 22, a jet is formed at the tail end of the guide fluid 22, which further promotes the mixing of liquid and air. At the same time, it ensures the back pressure in the middle section of the adsorption housing 11, improves the treatment effect of liquid on sulfides in exhaust gas, and prevents exhaust gas from entering the vicinity of the gradually increasing opening end of the adsorption housing 11 and forming turbulence, thus ensuring the efficiency of exhaust.

[0038] The working principle of this utility model is as follows: The exhaust gas generated by the electric furnace is sent into the pretreatment shell 10 and filtered by the inclined filter plate 13. When the amount of attached matter reaches a certain level, it will fall into the collection box 14, thus collecting the particulate matter in the exhaust gas. The liquid in the water pool below the adsorption shell 11 is sent into the clamp 20 by the spray pump. The liquid is sprayed into the middle section of the adsorption shell 11 through multiple branch pipes on the inner wall of the clamp 20. Since the adsorption shell 11 is large at both ends and small in the middle, the air is accelerated when passing through the middle section of the adsorption shell 11. Combined with the sprayed liquid, the air and liquid are fully mixed to achieve the desulfurization effect. By setting the bullet-shaped guide fluid 22, the air discharged from the middle section of the adsorption shell 11 will impact the tip of the guide fluid 22. After being squeezed and guided by the tip of the guide fluid 22, a beam is formed at the tail end of the guide fluid 22, which further promotes the mixing of liquid and air. At the same time, the back pressure in the middle section of the adsorption shell 11 is maintained. After dust removal and desulfurization, the air is further separated by the separation shell 12 and the purified air is discharged, completing the treatment of the exhaust gas.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust collection and desulfurization device, characterized in that, include: A pretreatment shell (10) is provided on one side of which an adsorption shell (11) and a separation shell (12) are connected end to end and communicate with each other. A dust collection assembly is installed on the wall of the pretreatment housing (10) for collecting dust. The dust collection assembly includes a filter plate (13) and a collection box (14). A window is provided at the bottom of the pretreatment housing (10). The filter plate (13) is detachably installed on the inner wall of the pretreatment housing (10) and extends inclined towards the window. The collection box (14) is fixedly installed at the bottom of the pretreatment housing (10) and faces the window. The spray structure is set inside the cavity of the adsorption shell (11) for spraying liquid.

2. The dust collection and desulfurization equipment according to claim 1, characterized in that: The pretreatment housing (10) forms a hollow rectangular box, and the filter plate (13) is adapted to the pretreatment housing (10). The filter plate (13) extends obliquely from the top to the bottom of the pretreatment housing (10).

3. The dust collection and desulfurization equipment according to claim 1, characterized in that: The collection box (14) is fixedly installed directly below the window, and the upper end of the collection box (14) is flush with the bottom of the filter plate (13).

4. The dust collection and desulfurization equipment according to claim 1, characterized in that: The top of the pretreatment housing (10) is provided with a slot for installing a filter plate (13). A sealing cover (131) is fixedly installed on the top of the filter plate (13). The sealing cover (131) is locked and fixed to the pretreatment housing (10) by screws.

5. The dust collection and desulfurization equipment according to claim 1, characterized in that: The spray structure includes a clamp (20) and a feeding pipe (21). The clamp (20) is fixedly installed on the outer wall of the adsorption shell (11). The feeding pipe (21) is fixedly connected to the clamp (20). The clamp (20) has a cavity. Several branch pipes are fixedly provided on the inner wall of the clamp (20). The branch pipes penetrate the adsorption shell (11) and extend into the cavity of the adsorption shell (11).

6. The dust collection and desulfurization equipment according to claim 5, characterized in that: The adsorption shell (11) forms a tube that tapers from both ends toward the middle position, and the clamp (20) is fixedly installed in the middle position of the adsorption shell (11).

7. The dust collection and desulfurization equipment according to claim 5, characterized in that: The spray structure also includes a guide fluid (22), which is fixedly installed inside the adsorption housing (11). The end of the guide fluid (22) forms a cone, and the tip of the guide fluid (22) faces the middle position of the adsorption housing (11).

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