Sulfuric acid tail gas hydrogen peroxide desulfurization discharge system

Abstract

The invention relates to the field of sulfuric acid tail gas treatment equipment, and discloses a sulfuric acid tail gas hydrogen peroxide desulfurization discharge system which comprises a main pipeline, multiple sets of branch pipelines are fixedly connected to the two sides of the outer surface of the main pipeline in a penetrating mode, and multiple sets of first liquid outlet holes are formed in the bottoms of the branch pipelines; the outer surface of the branch pipeline is connected with a rotating frame by arranging a rotating mechanism, a plurality of sets of mounting grooves are formed in the surface of the rotating frame, and a plurality of sets of movable plates are arranged in the mounting grooves. The rotating mechanism can be used for driving the rotating frame and the movable plate to move and switching the position of the movable plate, so that a new group of second liquid outlet holes are aligned with the first liquid outlet holes, the size of the group of second liquid outlet holes is the same as that of the first liquid outlet holes which are not corroded, and uniform distribution of sulfuric acid in the tower can be ensured.

Description

Technical Field

[0001] The present application relates to the field of sulfuric acid tail gas treatment equipment, and in particular to a sulfuric acid tail gas hydrogen peroxide desulfurization emission system. Background Art

[0002] The main purpose of applying hydrogen peroxide desulfurization technology in sulfuric acid tail gas treatment is to reduce sulfur dioxide emissions while improving environmental and economic benefits. The principle of hydrogen peroxide desulfurization technology is to use the strong oxidizing properties of hydrogen peroxide to oxidize sulfur dioxide in sulfuric acid industrial tail gas into sulfuric acid. This process not only helps to reduce sulfur dioxide emissions, but also increases sulfuric acid production through recycled sulfur dioxide, achieving a win-win situation for the environment and the economy.

[0003] The acid separator is an important component in the desulfurization tower. It can ensure that concentrated sulfuric acid is evenly distributed in the drying tower, improve the gas-liquid contact efficiency, and thus improve the sulfuric acid production efficiency and product quality. However, the existing acid separator also has some problems when in use. For example, the acid separation holes are susceptible to corrosion, and the pore sizes of the acid separation holes after corrosion are different, resulting in the concentrated sulfuric acid cannot be evenly distributed in the drying tower, thereby affecting the treatment efficiency of sulfuric acid tail gas. Therefore, a sulfuric acid tail gas hydrogen peroxide desulfurization emission system is proposed. Summary of the invention

[0004] In order to solve the problem that the acid distribution holes are susceptible to corrosion and the pore sizes of the acid distribution holes after corrosion are different, resulting in the inability to evenly distribute concentrated sulfuric acid in the drying tower, thereby affecting the efficiency of sulfuric acid tail gas treatment, the present application provides a sulfuric acid tail gas hydrogen peroxide desulfurization emission system.

[0005] The present application provides a sulfuric acid tail gas hydrogen peroxide desulfurization emission system adopts the following technical solution:

[0006] A sulfuric acid tail gas hydrogen peroxide desulfurization emission system comprises a main pipeline, multiple groups of branch pipelines are fixedly connected on both sides of the outer surface of the main pipeline, multiple groups of first liquid outlet holes are provided at the bottom of the branch pipeline, the outer surface of the branch pipeline is connected to a rotating frame by setting a rotating mechanism, multiple groups of mounting grooves are provided on the surface of the rotating frame, multiple groups of movable plates are provided inside the mounting grooves, multiple groups of second liquid outlet holes are provided on the surface of the movable plate, the first liquid outlet holes correspond to the second liquid outlet holes one by one, the rotating mechanism is used to switch the movable plate so that the second liquid outlet holes on the movable plate are aligned with the first liquid outlet holes, and a tightening mechanism is provided on the rotating frame, which can make the movable plate close to the branch pipeline.

[0007] Preferably, the clamping mechanism includes elastic members arranged on both sides of the rotating frame and the movable plate, the elastic members allow a gap between the movable plate and the outer surface of the branch pipe, a roller is rotatably installed on the side of the movable plate close to the main pipe, an L-shaped plate is fixedly connected to the outer surface of the branch pipe close to the main pipe, an arc-shaped convex plate is fixedly connected to the L-shaped plate, the roller moves on the surface of the arc-shaped convex plate, and when the roller moves to the convex part of the arc-shaped convex plate, the movable plate is lifted up.

[0008] Preferably, the elastic members include cylindrical grooves opened on the inner walls on both sides of the rotating frame, and T-shaped rods are installed inside the cylindrical grooves. One end of the T-shaped rod passes through the outside of the rotating frame and is fixedly connected to the movable plate, and a spring is sleeved on the surface of the T-shaped rod, one end of the spring is fixedly connected to the rotating frame, and the other end of the spring is fixedly connected to the movable plate.

[0009] Preferably, the rotating mechanisms include a motor, which is fixedly mounted at one end of the branch pipe, and the output shaft of the motor is located on the central axis of the branch pipe. A limit block is fixedly connected to the surface of the output shaft of the motor, and a groove is provided on the surface of the rotating frame. The combined shape of the motor output shaft and the limit block is adapted to the shape of the groove. A threaded cover is rotatably connected to the surface of the rotating frame, and the connecting end of the motor output shaft is provided with an external thread, and the threaded cover can be screwed onto the connecting end of the motor output shaft.

[0010] Preferably, an annular sleeve is fixedly connected to the surface of the motor output shaft, and the limit block is located between the annular sleeve and the threaded cover.

[0011] Preferably, the plurality of groups of movable plates are distributed in a ring array along the surface of the branch pipe with the branch pipe as the axis.

[0012] Preferably, the opening direction of the installation groove and the moving direction of the movable plate inside the installation groove are both parallel to the radial direction of the branch pipe.

[0013] Preferably, the side of the movable plate close to the branch pipe is configured as a curved surface structure adapted to the outer surface of the branch pipe.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. The present invention arranges multiple groups of movable plates around the outer surface of the branch pipe. When the second liquid outlet hole and the first liquid outlet hole at the liquid outlet end are corroded by sulfuric acid, the rotating mechanism can be used to drive the rotating frame and the movable plate to move, and the position of the movable plate can be switched to align a new group of second liquid outlet holes with the first liquid outlet holes. The size of the second liquid outlet holes is the same as that of the first liquid outlet holes when they are not corroded, which can ensure that the sulfuric acid is evenly distributed in the tower.

[0016] 2. The present invention provides a tightening mechanism so that the movable plate where the second liquid outlet hole aligned with the first liquid outlet hole is located can press against the branch pipe, thereby improving the sealing between the movable plate and the branch pipe and preventing sulfuric acid from being discharged from the gap between the movable plate and the branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0018] Figure 2 is a partial cross-sectional view of an embodiment of the application;

[0019] Figure 3 is a schematic structural diagram of the movable plate and the second liquid outlet of the embodiment of the application;

[0020] Figure 4 It is a partial structural schematic diagram of a rotating frame of an embodiment of the application;

[0021] Figure 5 It is an application embodiment Figure 2 The enlarged view of point A in the middle;

[0022] Figure 6 It is an application embodiment Figure 2 Enlarged view of point B in the middle.

[0023] Explanation of the reference numerals: 1. Main pipeline; 2. Branch pipeline; 3. Rotating frame; 4. Movable plate; 5. First liquid outlet; 6. Second liquid outlet; 7. Motor; 8. Cylindrical groove; 9. T-bar; 10. Spring; 11. Roller; 12. L-shaped plate; 13. Arc-shaped convex plate; 14. Annular sleeve plate; 15. Limit block; 16. External thread; 17. Threaded cover; 18. Mounting groove; 19. Groove body. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-6 This application is described in further detail.

[0025] The embodiment of the present application discloses a sulfuric acid tail gas hydrogen peroxide desulfurization emission system, including a main pipeline 1, multiple groups of branch pipelines 2 are fixedly connected on both sides of the outer surface of the main pipeline 1, multiple groups of first liquid outlet holes 5 are provided at the bottom of the branch pipeline 2, the outer surface of the branch pipeline 2 is connected to a rotating frame 3 by setting a rotating mechanism, multiple groups of installation grooves 18 are provided on the surface of the rotating frame 3, multiple groups of movable plates 4 are provided inside the installation grooves 18, multiple groups of second liquid outlet holes 6 are provided on the surface of the movable plates 4, the first liquid outlet holes 5 correspond to the second liquid outlet holes 6 one by one, the rotating mechanism is used to switch the movable plate 4 so that the second liquid outlet holes 6 on the movable plate 4 are aligned with the first liquid outlet holes 5, and a tightening mechanism is provided on the rotating frame 3, which can make the movable plate 4 close to the branch pipeline 2.

[0026] Furthermore, the plurality of movable plates 4 are distributed in a ring array along the surface of the branch pipe 2 with the branch pipe 2 as the axis.

[0027] Furthermore, the opening direction of the installation groove 18 and the moving direction of the movable plate 4 inside the installation groove 18 are both parallel to the radial direction of the branch pipe 2 .

[0028] Furthermore, one side of the movable plate 4 close to the branch pipe 2 is configured as a curved surface structure adapted to the outer surface of the branch pipe 2 .

[0029] In this embodiment, the size of the second liquid outlet holes 6 is the same as that of the first liquid outlet holes 5. By surrounding the movable plate 4 on the outer surface of the branch pipe 2, in actual use, it is necessary to keep a group of second liquid outlet holes 6 aligned with the first liquid outlet holes 5 to facilitate normal drainage of the first liquid outlet holes 5; when the group of second liquid outlet holes 6 and the first liquid outlet holes 5 are corroded by sulfuric acid after being used for a period of time, the rotating mechanism can be used to drive the rotating frame 3 and the movable plate 4 to move, and the position of the movable plate 4 can be switched to align a new group of second liquid outlet holes 6 with the first liquid outlet holes 5. The size of the group of second liquid outlet holes 6 is the same as that of the first liquid outlet holes 5 when they are not corroded, which can ensure that the sulfuric acid is evenly distributed in the tower.

[0030] Specifically, the acid separator can be used in sulfuric acid tail gas treatment towers of different sizes according to actual conditions. In this embodiment, the inner diameter of the sulfuric acid tail gas treatment tower used is 4000mm, and 9 rows of acid distribution branch pipes are arranged on the acid separator in the tower. The aperture of the acid distribution point is 12mm, that is, the aperture of the first liquid outlet hole 5 and the second liquid outlet hole 6 is set to 12mm, and 374 acid distribution points are set, which can ensure the spray density in the tower, improve the absorption efficiency, and avoid the appearance of acid distribution blind spots in the tower.

[0031] Furthermore, the clamping mechanism includes elastic members arranged on both sides of the rotating frame 3 and the movable plate 4, the elastic members allow a gap to exist between the movable plate 4 and the outer surface of the branch pipe 2, a roller 11 is rotatably installed on the side of the movable plate 4 close to the main pipe 1, an L-shaped plate 12 is fixedly connected to the side of the outer surface of the branch pipe 2 close to the main pipe 1, an arc-shaped convex plate 13 is fixedly connected to the L-shaped plate 12, the roller 11 moves on the surface of the arc-shaped convex plate 13, and when the roller 11 moves to the convex part of the arc-shaped convex plate 13, the movable plate 4 is lifted up.

[0032] Furthermore, the elastic parts include cylindrical grooves 8 opened on the inner walls on both sides of the rotating frame 3, and T-shaped rods 9 are installed inside the cylindrical grooves 8. One end of the T-shaped rod 9 passes through the outside of the rotating frame 3 and is fixedly connected to the movable plate 4, and a spring 10 is sleeved on the surface of the T-shaped rod 9, one end of the spring 10 is fixedly connected to the rotating frame 3, and the other end of the spring 10 is fixedly connected to the movable plate 4.

[0033] In this embodiment, by providing a tightening mechanism, the movable plate 4 where the second liquid outlet 6 aligned with the first liquid outlet 5 is located can be pressed against the branch pipe 2, thereby improving the sealing between the movable plate 4 and the branch pipe 2 and preventing sulfuric acid from being discharged from the gap between the movable plate 4 and the branch pipe 2.

[0034] Specifically, by providing an elastic member, a gap can be created between other movable plates 4 and the branch pipe 2, thereby reducing the friction resistance when the rotating frame 3 rotates around the branch pipe 2, making it convenient to switch the movable plate 4. When the roller 11 on one side of the movable plate 4 rotates to the bottom of the branch pipe 2 and moves to the protrusion of the arc-shaped convex plate 13, the arc-shaped convex plate 13 lifts the roller 11 and the movable plate 4, so that the movable plate 4 is close to the branch pipe 2, thereby improving the sealing performance. At this time, the movable plate 4 and the T-bar 9 move relative to the rotating frame 3, and the spring 10 is stretched. When the roller 11 on the movable plate 4 rotates away during the subsequent switching process, the stretched spring 10 is restored, thereby driving the movable plate 4, the T-bar 9, etc. to reset, so that the movable plate 4 is separated from the branch pipe 2 again.

[0035] Furthermore, the rotating mechanisms include a motor 7, which is fixedly mounted at one end of the branch pipe 2, and the output shaft of the motor 7 is located on the central axis of the branch pipe 2, the surface of the output shaft of the motor 7 is fixedly connected to a limit block 15, the surface of the rotating frame 3 is provided with a groove 19, the combined shape of the output shaft of the motor 7 and the limit block 15 is adapted to the shape of the groove 19, the surface of the rotating frame 3 is rotatably connected with a threaded cover 17, the connecting end of the output shaft of the motor 7 is provided with an external thread 16, and the threaded cover 17 can be screwed on the connecting end of the output shaft of the motor 7.

[0036] Furthermore, an annular sleeve plate 14 is fixedly connected to the surface of the output shaft of the motor 7 , and the limit block 15 is located between the annular sleeve plate 14 and the threaded cover 17 .

[0037] In this embodiment, by providing structures such as a limit block 15, a groove body 19 and a limit block 15, it is convenient to assemble or disassemble the rotating frame 3 and the output shaft of the motor 7. Specifically, when the rotating frame 3 is sleeved on the surface of the branch pipe 2, the output shaft of the motor 7 and the limit block 15 are embedded in the groove body 19 on the surface of the rotating frame 3, and the threaded cover 17 is screwed on the connecting end of the output shaft of the motor 7, and the threaded cover 17 and the annular sleeve plate 14 restrict the limit block 15, so that the output shaft of the motor 7 and the limit block 15 are stably embedded in the groove body 19. Therefore, when the motor 7 rotates, it can drive the limit block 15 and the rotating frame 3 to rotate, thereby realizing the switching of the movable plate 4.

[0038] In this embodiment, the rotating frame 3, the movable plate 4 and the elastic member form a separate component. When the second liquid outlet holes 6 on the surface of the movable plate 4 on the rotating frame 3 are corroded, they can be removed from the branch pipe 2 by reversing the above steps, and then a new one can be installed.

[0039] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0040] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0041] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sulfuric acid tail gas hydrogen peroxide desulfurization discharge system, comprising a main pipeline (1), characterized in that: Multiple groups of branch pipes (2) are fixedly connected and penetrated on both sides of the outer surface of the main pipe (1), and multiple groups of first liquid outlet holes (5) are provided at the bottom of each branch pipe (2). The outer surface of the branch pipe (2) is connected to a rotating frame (3) by means of a rotating mechanism. Multiple groups of mounting grooves (18) are provided on the surface of the rotating frame (3), and multiple groups of movable plates (4) are provided inside the mounting grooves (18). Multiple groups of second liquid outlet holes (6) are provided on the surface of each movable plate (4), and the first liquid outlet holes (5) correspond to the second liquid outlet holes (6) one by one. The rotating mechanism is used to switch the movable plate (4) so ​​that the second liquid outlet holes (6) on the movable plate (4) are aligned with the first liquid outlet holes (5), and a tightening mechanism is provided on the rotating frame (3), which can make the movable plate (4) close to the branch pipe (2).

2. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 1, characterized in that: The clamping mechanism comprises elastic members arranged on both sides of the rotating frame (3) and the movable plate (4), wherein the elastic members allow a gap to exist between the movable plate (4) and the outer surface of the branch pipe (2), a roller (11) is rotatably mounted on the side of the movable plate (4) close to the main pipe (1), an L-shaped plate (12) is fixedly connected to the outer surface of the branch pipe (2) close to the main pipe (1), an arc-shaped convex plate (13) is fixedly connected to the L-shaped plate (12), the roller (11) moves on the surface of the arc-shaped convex plate (13), and when the roller (11) moves to a convex position of the arc-shaped convex plate (13), the movable plate (4) is lifted up.

3. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 2, characterized in that: The elastic members each comprise a columnar groove (8) formed on the inner walls of both sides of the rotating frame (3); a T-shaped rod (9) is fitted inside the columnar groove (8); one end of the T-shaped rod (9) passes through the outside of the rotating frame (3) and is fixedly connected to the movable plate (4); a spring (10) is sleeved on the surface of the T-shaped rod (9); one end of the spring (10) is fixedly connected to the rotating frame (3); and the other end of the spring (10) is fixedly connected to the movable plate (4).

4. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 1, characterized in that: The rotating mechanisms each comprise a motor (7), the motor (7) being fixedly mounted on one end of the branch pipe (2), the output shaft of the motor (7) being located on the central axis of the branch pipe (2), the surface of the output shaft of the motor (7) being fixedly connected to a limit block (15), the surface of the rotating frame (3) being provided with a groove (19), the combined shape of the output shaft of the motor (7) and the limit block (15) being adapted to the shape of the groove (19), the surface of the rotating frame (3) being rotatably connected to a threaded cover (17), the connecting end of the output shaft of the motor (7) being provided with an external thread (16), and the threaded cover (17) being screwed onto the connecting end of the output shaft of the motor (7).

5. A sulfuric acid tail gas hydrogen peroxide desulfurization discharge system according to claim 4, characterized in that: An annular sleeve (14) is also fixedly connected to the surface of the output shaft of the motor (7), and the limit block (15) is located between the annular sleeve (14) and the threaded cover (17).

6. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 1, characterized in that: The plurality of groups of movable plates (4) are distributed in a ring array along the surface of the branch pipe (2) with the branch pipe (2) as the axis.

7. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 1, characterized in that: The opening direction of the installation groove (18) and the moving direction of the movable plate (4) inside the installation groove (18) are both parallel to the radial direction of the branch pipe (2).

8. A sulfuric acid tail gas hydrogen peroxide desulfurization emission system according to claim 7, characterized in that: The side of the movable plate (4) close to the branch pipe (2) is configured as a curved surface structure adapted to the outer surface of the branch pipe (2).

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