Spraying type tail gas harmless treatment device

Abstract

The utility model provides a spray type tail gas innocent treatment device, relates to tail gas treatment equipment technical field, including: main treatment tank, liquid medicine box and middle disc, the lower part of main treatment tank is provided with liquid medicine box, the inner side bottom of main treatment tank is provided with the middle disc in cooperation rotation, the top of middle disc is fixedly provided with the upper diversion fan, and the lower part is provided with the lower diversion fan. An upper protruding ring surrounds the outer side of the top of the middle disc, lower fan blades are arranged at the bottom of the middle disc in an annular array mode, and the upper flow guide fan is located on the inner side of the tail end of the outer communicating pipe. The middle disc is blocked between the tail end of the outer communicating pipe and the bottom of the main treatment tank, so that the outer communicating pipe is prevented from sucking sediments at the bottom of the main treatment tank, impurities in liquid medicine recovered from the bottom of the main treatment tank by the outer communicating pipe are reduced, and the problems that various impurities are precipitated in the liquid medicine at the bottom of the treatment device, and the impurities in the liquid medicine enter a spraying pipeline together and are wasted are solved. And the purity of the sprayed liquid medicine is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust gas treatment equipment, and in particular to a spray-type exhaust gas harmless treatment device. Background Technology

[0002] In sulfuric acid production, tail gas spraying treatment devices are used to treat the tail gas containing harmful gases such as sulfur dioxide (SO2) and sulfur trioxide (SO3) generated during the sulfuric acid production process to reduce environmental pollution.

[0003] The bottom of the treatment device is equipped with a liquid recovery tank to recover the residual liquid from the spraying process and add it back into the exhaust gas. Solids in the exhaust gas will also fall into the liquid recovery tank at the bottom of the treatment device, causing various impurities to settle in the liquid at the bottom of the treatment device. These impurities will enter the spraying pipe along with the liquid, reducing the purity of the sprayed liquid and affecting the spraying effect. Summary of the Invention

[0004] This disclosure relates to a spray-type exhaust gas harmless treatment device. The middle disc is positioned between the tail end of the external connecting pipe and the bottom of the main treatment tank to prevent the external connecting pipe from sucking in the sediment at the bottom of the main treatment tank, reduce the amount of impurities in the liquid recovered from the bottom of the main treatment tank by the external connecting pipe, and improve the purity of the liquid. The fluid in the external connecting pipe simultaneously drives the upper guide fan and the middle disc to rotate synchronously. The middle disc and the lower fan blade rotate synchronously. The lower fan blade pushes the sediment at the bottom towards the sediment outlet pipe, reducing sediment impurities around the external connecting pipe.

[0005] In a first aspect, this disclosure provides a spray-type exhaust gas harmless treatment device, specifically comprising: a main treatment tank, a liquid tank, and a central disc. The liquid tank is located at the lower part of the main treatment tank, and the central disc is rotatably mounted on the inner bottom of the main treatment tank in cooperation with a rotating shaft. An air inlet pipe is connected to the lower part of the main treatment tank, and a sediment discharge pipe is connected to the bottom of the main treatment tank. Inspection windows are provided at intervals on the upper part of the main treatment tank. A packing tray is fixed inside the main treatment tank, and a liquid spraying element is provided above the packing tray on the main treatment tank.

[0006] In at least some embodiments, the packing tray is located below the inspection window, the liquid spraying component is below the packing tray, and an adsorption ball is provided on the top of the packing tray.

[0007] In at least some embodiments, a pump is provided at the upper part of the liquid tank, the pump inlet is connected to an internal suction pipe, the pump outlet is connected to the outlet pipe, and an external connecting pipe is fixedly connected to the middle part of the liquid tank.

[0008] In at least some embodiments, the lower end of the inner suction pipe is connected to the lower part of the inside of the liquid tank, and the outlet pipe is connected to the liquid spraying pipe.

[0009] In at least some embodiments, the external connecting pipe has an inverted U-shaped structure, and the tail end of the external connecting pipe is connected to the bottom of the inner side of the main processing tank. The medicine tank is connected to the bottom of the main processing tank through the external connecting pipe for medicine recovery.

[0010] In at least some embodiments, an upper guide fan is fixedly provided on the top of the middle disk, an upper convex ring is provided around the outer side of the top of the middle disk, and a lower fan blade is provided in a ring array at the bottom of the middle disk.

[0011] In at least some embodiments, the upper guide fan is located inside the tail end of the outer connecting pipe, and the precipitate outlet pipe is located on the opposite side of the middle disc. During the rotation of the lower fan blades, the precipitate in the liquid at the bottom of the main treatment tank is pushed towards the precipitate outlet pipe. The middle disc is located below the tail end of the outer connecting pipe, and the middle disc and the tail end of the outer connecting pipe are spaced apart. The middle disc blocks the tail end of the outer connecting pipe and the bottom of the main treatment tank, and the outer connecting pipe cannot be directly connected to the bottom of the main treatment tank.

[0012] This utility model provides a spray-type exhaust gas harmless treatment device, which has the following beneficial effects:

[0013] The central disc is positioned between the end of the external connecting pipe and the bottom of the main treatment tank to prevent the external connecting pipe from sucking in sediment from the bottom of the main treatment tank, reduce the amount of impurities in the liquid that the external connecting pipe collects from the bottom of the main treatment tank, improve the purity of the liquid, ensure the spraying effect, and prevent the liquid spraying components from being blocked by sediment.

[0014] The fluid in the external connecting pipe simultaneously drives the upper guide fan and the middle disk to rotate synchronously. The middle disk and the lower fan blade rotate synchronously. The lower fan blade pushes the sediment at the bottom towards the sediment discharge pipe side, away from the external connecting pipe, promoting the accumulation of sediment on the sediment discharge pipe side. After the sediment discharge pipe is opened, the sediment is quickly discharged, improving maintenance efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0019] Figure 2 This invention provides a schematic diagram showing a partial cross-section of the main processing tank.

[0020] Figure 3 This paper shows a schematic diagram of a half-section of the liquid tank of this application;

[0021] Figure 4 A schematic diagram of the central disk structure of this application is shown;

[0022] Figure 5 A schematic diagram of the structure of the lower fan blade of this application is shown;

[0023] Figure 6 A structural schematic diagram of the cross-section of the middle disk in this application is shown;

[0024] List of reference numerals

[0025] 1. Main treatment tank; 101. Air inlet pipe; 102. Sediment outlet pipe; 103. Inspection window; 104. Packing tray; 105. Chemical spray unit;

[0026] 2. Medicine liquid tank; 201. Inner suction pipe; 202. Pump; 203. Discharge pipe; 204. External connecting pipe;

[0027] 3. Middle disc; 301. Upper guide fan; 302. Upper convex ring; 303. Lower fan blade. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] This utility model proposes a spray-type exhaust gas harmless treatment device, including: a main treatment tank 1, a liquid tank 2, and a central disc 3. An air inlet pipe 101 is connected to the lower part of the main treatment tank 1, and a sediment discharge pipe 102 is connected to the bottom of the main treatment tank 1. Maintenance windows 103 are spaced apart on the upper part of the main treatment tank 1. A packing tray 104 is fixed inside the main treatment tank 1. A liquid spraying element 105 is installed above the packing tray 104 on the main treatment tank 1. The packing tray 104 is located below the maintenance windows 103, and the liquid spraying element 105 is located below the packing tray 104. An adsorption ball is installed on the top of the packing tray 104. The liquid tank 2 is located at the lower part of the main treatment tank 1, and a pump 202 is installed at the upper part of the liquid tank 2. The inlet of the liquid tank is connected to the inner suction pipe 201, the outlet of the pump 202 is connected to the outlet pipe 203, the middle part of the liquid tank 2 is connected to the outer connecting pipe 204, the lower end of the inner suction pipe 201 is connected to the lower inner side of the liquid tank 2, the outlet pipe 203 is connected to the liquid spraying component 105, the outer connecting pipe 204 has an inverted U-shaped structure, the tail end of the outer connecting pipe 204 is connected to the bottom inner side of the main treatment tank 1, the liquid tank 2 is connected to the bottom of the main treatment tank 1 through the outer connecting pipe 204 for liquid recovery, the bottom inner side of the main treatment tank 1 has a rotating shaft with a middle disc 3, the top of the middle disc 3 is fixedly equipped with an upper guide fan 301, the outer side of the top of the middle disc 3 is surrounded by an upper convex ring 302, and the bottom of the middle disc 3 is equipped with a ring array of lower fan blades 303.

[0031] In this embodiment, the upper guide fan 301 is located inside the tail end of the outer connecting pipe 204, and the precipitate outlet pipe 102 is located on the opposite side of the middle disc 3. During the rotation of the lower fan blade 303, the precipitate in the liquid at the bottom of the main treatment tank 1 is pushed towards the precipitate outlet pipe 102, promoting the accumulation of precipitate on the side of the precipitate outlet pipe 102. The middle disc 3 is located below the tail end of the outer connecting pipe 204. The middle disc 3 and the tail end of the outer connecting pipe 204 are spaced apart. The middle disc 3 blocks the tail end of the outer connecting pipe 204 and the bottom of the main treatment tank 1. The outer connecting pipe 204 cannot be directly connected to the bottom of the main treatment tank 1 to avoid the outer connecting pipe 204 sucking in the precipitate at the bottom of the main treatment tank 1, reducing the amount of impurities recovered from the liquid at the bottom of the main treatment tank 1 by the outer connecting pipe 204, and ensuring the purity of the recovered liquid.

[0032] In Example 2, based on Example 1, an electromagnetic valve is installed at the first end of the external connecting pipe 204 for active opening and closing control. After the medicine liquid settles at the bottom of the main treatment tank 1, the electromagnetic valve of the external connecting pipe 204 opens to recover the medicine liquid. An arc-shaped inclined surface is provided between the inner top of the middle disc 3 and the upper convex ring 302. The protrusion of the upper convex ring 302 increases the barrier height between the middle disc 3 and the bottom of the main treatment tank 1. The arc-shaped inclined surface between the inner top of the middle disc 3 and the upper convex ring 302 can guide the external connecting pipe 204 to generate upward suction, adsorbing the clearer medicine liquid at the top for recovery.

[0033] The working principle of this embodiment is as follows: The inlet pipe 101 is connected to the tail gas containing sulfur dioxide (SO2) and sulfur trioxide (SO3) generated during the sulfuric acid production process. The alkaline solution is filled into the liquid tank 2. Adsorption balls are filled and stacked on top of the packing tray 104. The maintenance window 103 is used for maintenance and repair of the adsorption balls and the liquid spraying device 105. The outlet pipe above the main treatment tank 1 can be connected to another main treatment tank 1 for multiple tail gas treatment operations. The pump 202 draws the liquid from the liquid tank 2 through the inner liquid extraction pipe 201. The pump 202 delivers the liquid to the liquid spraying device 105 through the liquid outlet pipe 203. The liquid spraying device 105 atomizes and sprays the liquid downwards. The exhaust gas and atomized medicine are neutralized. Medicine is deposited at the bottom of the main treatment tank 1. The medicine tank 2 is connected to the bottom of the main treatment tank 1 through the external connecting pipe 204 for medicine recovery. The bottom of the medicine at the bottom of the main treatment tank 1 will have more sediment and other impurities. The middle disc 3 is blocked between the tail end of the external connecting pipe 204 and the bottom of the main treatment tank 1. The external connecting pipe 204 cannot be directly connected to the bottom of the main treatment tank 1 to avoid the external connecting pipe 204 sucking in the sediment at the bottom of the main treatment tank 1, reduce the amount of impurities in the medicine recovered from the bottom of the main treatment tank 1 by the external connecting pipe 204, improve the purity of the recovered medicine, ensure the spray treatment effect, and at the same time avoid the situation where sediment blocks the medicine spraying component 105.

[0034] When the external connecting pipe 204 draws in liquid medicine or other fluids, it drives the upper guide fan 301 to rotate. The upper guide fan 301 and the middle disc 3 rotate synchronously, and the middle disc 3 and the lower fan blade 303 rotate synchronously. During the rotation of the lower fan blade 303, it pushes the precipitate in the liquid medicine at the bottom of the main treatment tank 1 to flow towards the precipitate outlet pipe 102, away from the external connecting pipe 204, reducing the precipitate impurities around the external connecting pipe 204, promoting the accumulation of precipitate on one side of the precipitate outlet pipe 102, and quickly discharging the precipitate after the precipitate outlet pipe 102 is opened, reducing the opening time of the precipitate outlet pipe 102, improving the precipitate discharge efficiency of the precipitate outlet pipe 102, and improving maintenance efficiency.

[0035] The following points should be noted in this article:

[0036] 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0037] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0038] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A spray-type exhaust gas harmless treatment device, comprising: The main processing tank (1), the liquid medicine tank (2) and the middle disc (3) are characterized in that the liquid medicine tank (2) is provided at the lower part of the main processing tank (1), the middle disc (3) is rotatably provided on the inner bottom of the main processing tank (1) with the rotating shaft, the upper guide fan (301) is fixedly provided on the top of the middle disc (3), the upper convex ring (302) is arranged around the outer side of the top of the middle disc (3), the lower fan blades (303) are arranged in a ring array at the bottom of the middle disc (3), and the upper guide fan (301) is located inside the tail end of the outer connecting pipe (204).

2. The spray-type exhaust gas harmless treatment device according to claim 1, characterized in that, The main treatment tank (1) is connected to an air inlet pipe (101) at its lower part, and to a precipitate outlet pipe (102) at its bottom. The main treatment tank (1) is provided with maintenance windows (103) at intervals at its upper part. A packing tray (104) is fixed inside the main treatment tank (1), and a liquid spraying device (105) is provided above the packing tray (104) in the main treatment tank (1).

3. The spray-type exhaust gas harmless treatment device according to claim 2, characterized in that, The packing tray (104) is located below the inspection window (103), and the liquid spraying component (105) is below the packing tray (104).

4. The spray-type exhaust gas harmless treatment device according to claim 2, characterized in that, A pump (202) is installed on the upper part of the liquid tank (2). The inlet of the pump (202) is connected to an inner pumping pipe (201). The outlet of the pump (202) is connected to the outlet pipe (203). An outer connecting pipe (204) is fixed in the middle of the liquid tank (2).

5. The spray-type exhaust gas harmless treatment device according to claim 4, characterized in that, The lower end of the inner liquid extraction pipe (201) is connected to the lower part of the inner side of the liquid tank (2), and the liquid outlet pipe (203) is connected to the liquid spraying device (105).

6. The spray-type exhaust gas harmless treatment device according to claim 5, characterized in that, The external connecting pipe (204) has an inverted U-shaped structure, and the tail end of the external connecting pipe (204) is connected to the bottom of the inner side of the main processing tank (1).

7. The spray-type exhaust gas harmless treatment device according to claim 6, characterized in that, The precipitate outlet pipe (102) is located on the opposite side of the middle disc (3), and the middle disc (3) is located below the tail end of the outer connecting pipe (204). The tail ends of the middle disc (3) and the outer connecting pipe (204) are spaced apart.

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