High-efficiency flue gas desulfurization tower

Abstract

The utility model relates to the technical field of desulfurizing towers, and provides an efficient flue gas desulfurizing tower which comprises a tower body and an exhaust hood, the exhaust hood is arranged at the top of the tower body, a covering exhaust assembly is arranged between the tower body and the exhaust hood, an inner hood is fixed in the tower body, a backflow gas inlet assembly is arranged on the inner hood, and the covering exhaust assembly comprises a double-shaft motor. The exhaust hood is fixed to the top of the double-shaft motor, the output end located at the lower end of the double-shaft motor is connected with a dispersion frame, an annular pipeline is arranged in the tower body, the outer portion of the tower body is connected with a water inlet pipe, the water inlet pipe is connected with the annular pipeline, and a plurality of nozzles are arranged on the periphery of the surface of the inner side of the annular pipeline. A plurality of air pipes are connected between the exhaust hood and the top of the tower body. According to the technical scheme, the problems of low utilization rate of absorption liquid, low flue gas desulfurization rate, low working efficiency and poor overall use effect of a flue gas desulfurization tower in the prior art when the flue gas desulfurization tower is used for flue gas desulfurization are solved.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, specifically to a high-efficiency flue gas desulfurization tower. Background Technology

[0002] Flue gas desulfurization refers to the removal of sulfur oxides from flue gas or other industrial waste gases. Its chemical principle is that SO2 in flue gas is essentially acidic and can be removed by reacting with appropriate alkaline substances.

[0003] Currently, commonly used flue gas desulfurization methods both domestically and internationally can be categorized into wet, dry, and semi-dry (semi-wet) methods based on the dry / wet state of the absorbent and desulfurization products during the desulfurization process. In wet flue gas desulfurization systems, alkaline substances (usually alkaline solutions, but more often alkaline slurries) encounter the flue gas in a spray tower. SO2 in the flue gas dissolves in water, forming a dilute acid solution, which then neutralizes the alkaline substances dissolved in the water. In this process, the main components of the commonly used alkaline solution are limestone, lime, or sodium carbonate slurries.

[0004] The main equipment used in flue gas desulfurization is the flue gas desulfurization tower. Inside the flue gas desulfurization tower, sulfur-containing flue gas reacts with alkaline absorbent liquid to remove SO2 and other substances from the flue gas.

[0005] The existing flue gas desulfurization towers have the following problems in application: sulfur-containing flue gas rises vertically after entering the tower, while the alkaline absorbent liquid falls vertically under the influence of gravity. Although the vertically rising flue gas and the vertically falling alkaline absorbent liquid will form opposing contact, the contact area and contact time between the flue gas and the absorbent liquid are small throughout the process. This results in insufficient contact and reaction between SO2 in the flue gas and alkaline substances in the absorbent liquid, leading to low utilization rate of the absorbent liquid, low flue gas desulfurization rate, low desulfurization efficiency, and poor overall performance of the device.

[0006] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content

[0007] This utility model proposes a high-efficiency flue gas desulfurization tower, which solves the problems of low utilization rate of absorbent, low flue gas desulfurization rate, low working efficiency and poor overall performance of flue gas desulfurization towers in related technologies.

[0008] The technical solution of this utility model is as follows: including...

[0009] The tower body and the exhaust hood, wherein the exhaust hood is located on the top of the tower body;

[0010] A covered exhaust assembly is disposed between the tower body and the exhaust hood;

[0011] The inner cover and the reflux air intake assembly are provided, wherein the inner cover is fixed inside the tower body and the reflux air intake assembly is disposed on the inner cover;

[0012] The exhaust hood includes a dual-axis motor, which is fixed to the top of the tower body. The exhaust hood is fixed to the top of the dual-axis motor. A distribution frame is connected to the output end of the dual-axis motor at its lower end. An annular pipe is installed inside the tower body.

[0013] As a further technical solution, a water inlet pipe is connected to the outside of the tower body, the water inlet pipe is connected to the annular pipe, a number of nozzles are arranged around the inner surface of the annular pipe, and a number of air pipes are connected between the exhaust hood and the top of the tower body.

[0014] As a further technical solution, an impeller is connected to the output end of the dual-shaft motor. The impeller is located inside the exhaust hood, and a shield is provided on the top of the exhaust hood. The size of the shield is larger than the size of the opening at the top of the exhaust hood.

[0015] As a further technical solution, the reflux air intake assembly includes a flue gas inlet pipe, which is fixed to the outer wall of the tower body. An annular cavity is formed around the outer surface of the inner cover, and the annular cavity is connected to the flue gas inlet pipe.

[0016] As a further technical solution, the inner surface of the inner cover has several circular holes around its circumference, the circular holes being connected to the annular cavity, the top of the inner cover having an air inlet mesh, and the surface of the inner cover having several return ports around its circumference.

[0017] As a further technical solution, the lower end of the inner cover is located outside the tower body, a bottom cover is fitted to the bottom of the inner cover, and an internal threaded sealing cover is rotatably fitted to the bottom of the inner cover. The internal threaded sealing cover and the bottom cover are connected by screwing. A filter element is provided inside the bottom cover.

[0018] As a further technical solution, the top and bottom of the inner cover located inside the tower body are both inclined structural surfaces.

[0019] As a further technical solution, a raised layer is provided around the inner wall of the tower, and the surface of the raised layer has a wavy structure.

[0020] As a further technical solution, the nozzle is tilted downwards, and the nozzle adopts a mist-like spray structure.

[0021] As a further technical solution, the lower end of the trachea has a funnel-shaped opening structure.

[0022] The working principle and beneficial effects of this utility model are as follows:

[0023] 1. This utility model is equipped with a covering exhaust component. Through the interaction of structures such as a dual-shaft motor, annular pipe, drain pipe, nozzle, impeller and shield, the incoming absorbent liquid can be covered in the tower body in a mist form. The flue gas and absorbent liquid can be fully interacted by the high-speed rotating dispersion frame to improve the adsorption effect while maintaining the exhaust state.

[0024] 2. This utility model is equipped with a reflux air intake component. Through the interaction of structures such as the annular cavity, round hole, air intake mesh, reflux port and filter element, the incoming flue gas can be completely covered inside the tower body, which can quickly collect the absorbent liquid and centrally filter it, resulting in a good recycling and emission effect. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is an isometric drawing of the present invention;

[0028] Figure 3 This is an isometric sectional view of the present invention;

[0029] Figure 4 Appendix to this utility model Figure 3 Enlarged view of part A in the middle;

[0030] In the diagram: 1. Tower body; 2. Exhaust hood; 3. Inner cover; 4. Exhaust covering assembly; 4-1. Dual-shaft motor; 4-2. Dispersion rack; 4-3. Annular pipe; 4-4. Water inlet pipe; 4-5. Nozzle; 4-6. Air pipe; 4-7. Impeller; 4-8. Shield; 5. Return air inlet assembly; 5-1. Flue gas inlet pipe; 5-2. Annular cavity; 5-3. Round hole; 5-4. Air inlet mesh; 5-5. Return port; 5-6. Bottom cover; 5-7. Internal threaded sealing cover; 5-8. Filter element; 6. Raised layer. Detailed Implementation

[0031] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0032] like Figures 1-4 As shown, this embodiment proposes a high-efficiency flue gas desulfurization tower, including...

[0033] Tower body 1 and exhaust hood 2, with exhaust hood 2 located on top of tower body 1;

[0034] The exhaust hood 4 is covered and disposed between the tower body 1 and the exhaust hood 2.

[0035] The inner cover 3 and the reflux air intake assembly 5 are fixed inside the tower body 1, and the reflux air intake assembly 5 is installed on the inner cover 3.

[0036] The exhaust assembly 4 includes a dual-shaft motor 4-1, which is fixed to the top of the tower body 1. The exhaust hood 2 is fixed to the top of the dual-shaft motor 4-1. A dispersion rack 4-2 is connected to the output end of the dual-shaft motor 4-1 at its lower end. An annular pipe 4-3 is installed inside the tower body 1. A water inlet pipe 4-4 is connected to the outside of the tower body 1. The water inlet pipe 4-4 is connected to the annular pipe 4-3. Several nozzles 4-5 are arranged around the inner surface of the annular pipe 4-3. Several air pipes 4-6 are connected between the exhaust hood 2 and the top of the tower body 1. An impeller 4-7 is connected to the output end of the dual-shaft motor 4-1 at its upper end. The impeller 4-7 is located inside the exhaust hood 2. A shield 4-8 is installed on the top of the exhaust hood 2. The size of the shield 4-8 is larger than the size of the opening at the top of the exhaust hood 2.

[0037] In this embodiment, in order to achieve the effect of misting water downwards and accelerating exhaust, a covering exhaust component 4 is designed. A dual-shaft motor 4-1 is set at the top of the tower body 1, and an exhaust hood 2 is fixed at the top of the dual-shaft motor 4-1. A dispersion frame 4-2 is set at the lower end of the dual-shaft motor 4-1. An annular pipe 4-3 and a water inlet pipe 4-4 are set inside the tower body 1. Multiple nozzles 4-5 are set around the inner side of the annular pipe 4-3. The water inlet pipe 4-4 can be connected to the conveying equipment of the absorbent liquid, and sprays it inward through the nozzles 4-5. The dispersion frame 4-2 will continue to rotate to fully mix the absorbent liquid and gas. Multiple air pipes 4-6 are connected between the exhaust hood 2 and the tower body 1 for upward exhaust. An impeller 4-7 is set at the upper end of the dual-shaft motor 4-1. The impeller 4-7 is located inside the exhaust hood 2, which can simultaneously maintain the effect of accelerating exhaust. A shield 4-8 is also set at the top of the exhaust hood 2.

[0038] Furthermore, the reflux intake assembly 5 includes a flue gas inlet pipe 5-1, which is fixed to the outer wall of the tower body 1. An annular cavity 5-2 is formed around the outer surface of the inner cover 3, which is connected to the flue gas inlet pipe 5-1. Several round holes 5-3 are formed around the inner surface of the inner cover 3, which are connected to the annular cavity 5-2. An air inlet mesh 5-4 is formed at the top of the inner cover 3. Several reflux ports 5-5 are formed around the surface of the inner cover 3. The lower end of the inner cover 3 is located outside the tower body 1. A bottom cover 5-6 is fitted and connected to the bottom of the inner cover 3. An internal thread sealing cover 5-7 is rotatably fitted and connected to the bottom of the inner cover 3. The internal thread sealing cover 5-7 and the bottom cover 5-6 are connected by screwing. A filter element 5-8 is provided inside the bottom cover 5-6.

[0039] In this embodiment, in order to achieve the effect of collecting and returning the absorbent liquid and dispersing the air inward, a return air intake component 5 is designed. An annular cavity 5-2 is formed around the outer surface of the inner cover 3. A flue gas inlet pipe 5-1 is fixed to the outside and communicates with the annular cavity 5-2. The flue gas can enter the annular cavity 5-2 through the flue gas inlet pipe 5-1. A circular hole 5-3 is also provided to discharge the flue gas into the inner cover 3. An air inlet mesh 5-4 is provided at the top of the inner cover 3 to disperse the gas upward. A return port 5-5 is also provided to collect the absorbent liquid and discharge it downward. A bottom cover 5-6 is fitted at the bottom of the inner cover 3, and an internal threaded sealing cover 5-7 is rotatably connected to it. The internal threaded sealing cover 5-7 and the bottom cover 5-6 are connected by screwing, which can fix the bottom cover 5-6 at the bottom of the inner cover 3 for centralized discharge of the absorbent liquid. A filter element 5-8 is also provided inside to filter the absorbent liquid.

[0040] Furthermore, the top and bottom of the inner cover 3 located inside the tower body 1 are both inclined structural surfaces.

[0041] In this embodiment, the inclined structural surface enables better collection and discharge of the absorbent liquid.

[0042] Furthermore, a raised layer 6 is provided around the inner wall of the tower body 1, and the surface of the raised layer 6 has a wavy structure.

[0043] In this embodiment, by providing a wavy protrusion 6, the absorbent liquid can flow on the surface of the protrusion 6, thereby improving the adsorption effect.

[0044] Furthermore, nozzle 4-5 is tilted downwards and adopts a mist-like spray structure.

[0045] In this embodiment, the coverage effect of the absorbent liquid can be improved by the mist spraying effect.

[0046] Furthermore, the lower ends of trachea 4-6 have a funnel-shaped opening structure.

[0047] In this embodiment, the air collection effect of trachea 4-6 can be improved by using a funnel-shaped opening structure.

[0048] When flue gas needs to be treated, the flue gas enters the inner cover 3 through the flue gas inlet pipe 5-1 and the annular cavity 5-2, and then flows upward through the air inlet mesh 5-4. During the process, the dual-shaft motor 4-1 and the nozzle 4-5 are activated. The nozzle 4-5 sprays the absorbent liquid inward to cover the gas, and the high-speed rotation of the dispersion frame 4-2 accelerates the absorption effect of the gas. At the same time, the impeller 4-7 draws the treated flue gas into the exhaust hood 2 through the air pipe 4-6 and then discharges it outward. The absorbent liquid flows downward and enters the inner cover 3 through the return port 5-5. Finally, it is discharged after being treated by the filter element 5-8 in the bottom cover 5-6.

[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-efficiency flue gas desulfurization tower, characterized in that, include The tower body (1) and the exhaust hood (2) are disposed on the top of the tower body (1); A cover exhaust assembly (4) is disposed between the tower body (1) and the exhaust hood (2); The inner cover (3) and the reflux air intake assembly (5) are provided on the inner cover (3), the inner cover (3) being fixed inside the tower body (1). The exhaust covering assembly (4) includes a dual-axis motor (4-1), which is fixed to the top of the tower body (1). The exhaust hood (2) is fixed to the top of the dual-axis motor (4-1). A dispersion rack (4-2) is connected to the output end of the dual-axis motor (4-1) at the lower end. An annular pipe (4-3) is provided inside the tower body (1).

2. The high-efficiency flue gas desulfurization tower according to claim 1, characterized in that, The tower body (1) is connected to a water inlet pipe (4-4) on the outside. The water inlet pipe (4-4) is connected to the annular pipe (4-3). Several nozzles (4-5) are arranged around the inner surface of the annular pipe (4-3). Several air pipes (4-6) are connected between the exhaust hood (2) and the top of the tower body (1).

3. The high-efficiency flue gas desulfurization tower according to claim 2, characterized in that, An impeller (4-7) is connected to the output end of the dual-shaft motor (4-1). The impeller (4-7) is located inside the exhaust hood (2). A shield (4-8) is provided on the top of the exhaust hood (2). The size of the shield (4-8) is larger than the size of the opening at the top of the exhaust hood (2).

4. The high-efficiency flue gas desulfurization tower according to claim 1, characterized in that, The reflux air intake assembly (5) includes a flue gas inlet pipe (5-1), which is fixed to the outer wall of the tower body (1). An annular cavity (5-2) is formed around the outer surface of the inner cover (3), and the annular cavity (5-2) is connected to the flue gas inlet pipe (5-1).

5. The high-efficiency flue gas desulfurization tower according to claim 4, characterized in that, The inner cover (3) has several round holes (5-3) around its inner surface. The round holes (5-3) are connected to the annular cavity (5-2). The top of the inner cover (3) has an air inlet mesh (5-4). The inner cover (3) has several return ports (5-5) around its surface.

6. The high-efficiency flue gas desulfurization tower according to claim 5, characterized in that, The lower end of the inner cover (3) is located outside the tower body (1). The bottom of the inner cover (3) is fitted with a bottom cover (5-6). The bottom of the inner cover (3) is rotatably fitted with an internal thread sealing cover (5-7). The internal thread sealing cover (5-7) and the bottom cover (5-6) are connected by screwing. A filter element (5-8) is provided inside the bottom cover (5-6).

7. The high-efficiency flue gas desulfurization tower according to claim 1, characterized in that, The top and bottom of the inner cover (3) located inside the tower body (1) are both inclined structural surfaces.

8. The high-efficiency flue gas desulfurization tower according to claim 1, characterized in that, The inner wall of the tower body (1) is provided with a raised layer (6) around the perimeter, and the surface of the raised layer (6) has a wave-like structure.

9. A high-efficiency flue gas desulfurization tower according to claim 2, characterized in that, The nozzle (4-5) is tilted downwards and has a mist-like spray structure.

10. A high-efficiency flue gas desulfurization tower according to claim 2, characterized in that, The lower end of the trachea (4-6) has a funnel-shaped opening structure.

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