A desulfurization tower for recovering sulfur dioxide from sulfuric acid tail gas

Abstract

The application discloses a sulfur dioxide recovery desulfurization tower in sulfuric acid tail gas, which comprises a tower body provided with ammonia water, an air inlet pipe, a high-efficiency activated carbon layer, a movable ring plate, a hose, a gas permeation hole, a stirring part, a rotating plate, a limiting frame, a rotating plate and a fixing column. The rotating plate moves in a circle, and the movable ring plate moves back and forth through the first supporting plate, the second supporting plate and the limiting frame, and the hose moves, so that the position of the hose is changed, the sulfuric acid tail gas enters different positions in the tower body, reacts with the ammonia water and the recovery of the sulfur dioxide is completed. The rotating plate rotates, the inclined fixing column is acted on, the movable ring plate moves back and forth in the horizontal direction, on one hand, moves up and down in the vertical direction with a certain height, on the other hand, rotates back and forth with a certain horizontal angle, the moving distance, position and angle of the hose are changed, the contact reaction between the sulfuric acid tail gas and the ammonia water is increased, and the recovery efficiency of the sulfur dioxide is ensured.

Description

TECHNICAL FIELD

[0001] The application relates to a sulfuric acid tail gas sulfur dioxide recovery desulfurization tower. BACKGROUND

[0002] The sulfur dioxide in the sulfuric acid tail gas mainly comes from the following processes: by-product of raw material combustion: sulfur dioxide is generated by combustion of pyrite or sulfur; or incomplete process conversion: the conversion rate and absorption rate of sulfur dioxide to sulfur trioxide are lower than 100%, and the unreacted sulfur dioxide and sulfur trioxide remain in the tail gas; or acid mist entrainment: a small amount of sulfuric acid is entrained to form acid mist when sulfuric acid absorbs sulfur trioxide; in order to separate the sulfur dioxide in the sulfuric acid tail gas, a recovery desulfurization tower device is generally used, and the sulfur dioxide is separated out by contacting the sulfuric acid tail gas with a reaction liquid (ammonia water is mostly used).

[0003] In the existing recovery desulfurization tower, the tail gas is released into the recovery desulfurization tower with ammonia water through the gas inlet pipe. However, the position of the gas inlet pipe is fixed, so that the gas stays in the ammonia water for a short time, and the position of the gas and ammonia water reaction is moderate and fixed, so that the contact efficiency of the gas and the liquid is not high, and the recovery efficiency of the sulfur dioxide cannot be improved.

[0004] Therefore, the application provides a sulfuric acid tail gas sulfur dioxide recovery desulfurization tower. SUMMARY

[0005] The application aims to provide a sulfuric acid tail gas sulfur dioxide recovery desulfurization tower to solve the problems in the background.

[0006] To achieve the above-mentioned purpose, the application provides a sulfuric acid tail gas sulfur dioxide recovery desulfurization tower, which comprises a tower body containing ammonia water, and a gas inlet pipe is arranged in the tower body.

[0007] Further, a plurality of high-efficiency activated carbon layers are arranged in the gas inlet pipe, an activity ring plate is movably arranged in the tower body, a plurality of loose hoses are connected between the activity ring plate and the gas inlet pipe, air holes are formed in the hoses and the activity ring plate, a stirring piece is driven to rotate in the tower body, a rotating plate is fixedly connected to the bottom end of the stirring piece, an inclined limiting frame is slidably arranged in the tower body through a limiting piece, and a sliding piece is arranged between the limiting frame and the rotating plate.

[0008] The rotating plate is rotatably connected to the sliding piece, a plurality of inclined fixed columns are fixedly connected to the inner wall of the activity ring plate, and the rotating plate is engaged with the plurality of fixed columns.

[0009] Further, a first supporting plate and a second supporting plate are fixedly connected to the middle part of the limiting frame, and the end part of the second supporting plate is abuttingly connected to the activity ring plate.

[0010] Further, the limiting piece comprises a fixed plate fixedly connected with the air inlet pipe, a sleeve in sliding fit with the second supporting plate is fixedly connected to the top of the fixed plate, and the air inlet pipe is a hard air inlet pipe.

[0011] Further, the sliding piece comprises a rotation shaft rotationally connected with the first supporting plate, one end of the rotation shaft is fixedly connected with a rotating plate, the other end penetrates into a limiting frame and is fixedly connected with a bevel gear, the rotating plate is rotationally connected with an inclined tooth plate in mesh with the bevel gear, and the inclined tooth plate slides in the limiting frame.

[0012] Further, the end of the rotation shaft extends out of the central shaft of the rotating plate, the inner wall of the movable ring plate is fixedly connected with limiting sliding plates in inclined distribution, and the inclination angle of the limiting sliding plates is consistent with the inclination angle of the plurality of fixed columns.

[0013] Further, a plurality of fit grooves in mesh with the fixed columns are formed in the edge of the rotating plate, the side of the rotating plate close to the inner wall of the movable ring plate is in arc shape, and the rotating plate is away from the limiting sliding plates.

[0014] Further, the bottom of the first supporting plate is fixedly connected with a connecting plate, the connecting plate is fixedly connected with a pressing plate in sliding fit with the limiting sliding plates, and the top of the pressing plate is in an angle consistent with the inclination angle of the limiting sliding plates.

[0015] Further, the connecting plate away from the rotating plate is in L-shaped shape, so as to avoid operation interference, and the pressing plate is in T-shaped structure.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The rotating plate rotates in a circle, under the limiting action of the limiting piece, the movable ring plate moves back and forth through the first supporting plate, the second supporting plate and the limiting frame, and the soft tube is moved, so that the position of the soft tube is changed, the sulfuric acid tail gas enters the tower body in different positions, reacts with ammonia water, and the recovery of sulfur dioxide is completed.

[0018] Through the rotation of the rotating plate, the fixed columns are acted on, the movable ring plate moving back and forth in the horizontal direction is moved up and down in the vertical direction at a certain height, and the movable ring plate is rotated back and forth at a certain horizontal angle, so that the moving distance, position and angle of the soft tube are changed, the contact reaction between the sulfuric acid tail gas and the ammonia water is increased, and the recovery efficiency of sulfur dioxide is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the cooperation between the internal structure of the tower body and the air inlet pipe.

[0021] Figure 3 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0022] Figure 4 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0023] Figure 5 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0024] Figure 6 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0025] Figure 7 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0026] Figure 8 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0027] Figure 9 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0028] Figure 10 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0029] Figure 11 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0030] Figure 12 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0031] Figure 13 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0032] Figure 14 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application; Figure 13 It is the cooperation structure diagram of the movable ring plate and the air inlet pipe of the application;

[0033] In the figure: 1, tower body; 2, air inlet pipe; 3, movable ring plate; 4, hose; 5, air hole; 6, stirring piece; 7, rotating plate; 8, limiting frame; 9, rotating plate; 10, fixed column; 11, first support plate; 12, second support plate; 13, fixed plate; 14, sleeve; 15, self-rotating rod; 16, bevel gear; 17, inclined tooth plate; 18, limiting slide plate; 19, matching groove; 20, connecting plate; 21, pressing plate; 22, motor. DETAILED DESCRIPTION

[0034] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0035] Please refer to Figures 1-14 The present application provides a sulfuric acid tail gas sulfur dioxide recovery desulfurization tower, including the tower body 1 containing ammonia, the tower body 1 is equipped with the air inlet pipe 2;

[0036] In the present application, the sulfuric acid tail gas enters the tower body 1 containing ammonia through the air inlet pipe 2, and the sulfur dioxide in the sulfuric acid tail gas is separated out after contacting with ammonia, and the treated gas enters the next processing process through the air outlet pipe at the top of the tower body 1 (shown in the figure);

[0037] Further comprising: a plurality of high-efficiency activated carbon layers are installed in the air inlet pipe 2, a movable ring plate 3 (an inner cavity is arranged inside) is movably arranged in the tower body 1, a plurality of loose hoses 4 are in communication between the movable ring plate 3 and the air inlet pipe 2, air holes 5 are arranged on the hoses 4 and the movable ring plate 3, a stirring piece 6 is driven to rotate in the tower body 1, the stirring piece 6 is provided with stirring plates for increasing stirring efficiency, a rotating plate 7 is fixedly connected to the bottom end of the stirring piece 6, a limiting frame 8 in inclined distribution is slidably matched with the tower body 1 through a limiting piece, and a sliding piece is arranged between the limiting frame 8 and the rotating plate 7;

[0038] The rotating plate 9 is rotated through the sliding piece, a plurality of fixed columns 10 in inclined arrangement are fixedly connected to the inner wall of the movable ring plate 3, and the rotating plate 9 is engaged with the plurality of fixed columns 10.

[0039] In the present application, the sulfur dioxide in the tail gas is separated out through ammonia, the efficiency of desulfurization is improved, and air pollution is prevented and treated;

[0040] Compared with the prior art, in the present application, the contact position of the gas and the liquid is changed through the movable hose 4, the time of the gas staying in the liquid is lengthened, and the position of the gas staying is changed, and the specific implementation manner is as follows:

[0041] The stirring piece 6 is driven to rotate at low speed through the motor 22 at the top of the tower body 1, the rotating plate 7 is driven to move in a circle, under the limiting action of the limiting piece, the first supporting plate 11, the second supporting plate 12 and the limiting frame 8 are driven to move back and forth, so that the movable ring plate 3 is driven to move back and forth, the hose 4 is driven to move, so that the position of the hose 4 is changed, the sulfuric acid tail gas enters different positions in the tower body 1, reacts with ammonia, and the recovery of sulfur dioxide is completed, wherein the hose 4 is loose, and the distance between the hoses is large, so that the hose 4 is not excessively pulled and wound.

[0042] The gap drives the rotating plate 9 to rotate, and the rotating plate 9 acts on the inclined fixed column 10, so that the movable ring plate 3 which moves back and forth in the horizontal direction also moves up and down in a certain height in the vertical direction and rotates in a certain angle in the horizontal direction;

[0043] Thus, the top end of the hose 4 moves back and forth in a large distance in the horizontal direction, moves up and down in a small distance in the vertical direction, and rotates in a certain angle in the horizontal direction, so that the moving distance, position and angle of the hose 4 are changed, the contact reaction between the sulfuric acid tail gas and the ammonia water is increased, and the recovery efficiency of sulfur dioxide is ensured.

[0044] The first support plate 11 and the second support plate 12 are fixedly connected to the middle part of the limiting frame 8, the end of the second support plate 12 abuts against the movable ring plate 3, the end of the second support plate 12 abuts against and contacts the movable ring plate 3, but the end of the second support plate 12 does not affect the rotation of the movable ring plate 3, the self-rotating rod 15 which rotates with the first support plate 11 abuts against the movable ring plate 3 and does not affect the rotation of the movable ring plate 3, so that the movement of the first support plate 11 and the second support plate 12 drives the movable ring plate 3 to move back and forth in the horizontal direction;

[0045] The limiting part includes a fixed plate 13 which is fixedly connected to the air inlet pipe 2, and a sleeve 14 which is slidably connected to the second support plate 12 and is fixedly connected to the top of the fixed plate 13, the air inlet pipe 2 is a hard air inlet pipe 2, and the first support plate 11 and the second support plate 12 and the limiting frame 8 move in the same horizontal height due to the limitation of the fixed plate 13 and the sleeve 14, and cannot move in the vertical height.

[0046] The first support plate 11 and the second support plate 12 move back and forth in the same horizontal height:

[0047] The self-rotating rod 15 which is rotatably connected to the first support plate 11 is fixedly connected to one end of the rotating plate 9, the other end of the self-rotating rod 15 penetrates into the limiting frame 8 and is fixedly connected with a bevel gear 16, the end of the rotating plate 7 is rotatably connected with an inclined tooth plate 17 which is engaged with the bevel gear 16, and the inclined tooth plate 17 slides in the limiting frame 8.

[0048] The motor 22 is fixed to the outer surface of the tower body 1, the output shaft of the motor 22 penetrates into the tower body 1 and is fixedly connected with the stirring part 6, the stirring part 6 rotates in the original position, drives the rotating plate 7 to rotate in a circle, so that the inclined tooth plate 17 rotates in a circle, due to the action of the limiting part, the inclined limiting frame 8 moves in the horizontal position, and the inclined tooth plate 17 slides in the limiting frame 8, the first support plate 11 and the second support plate 12 move back and forth in the same horizontal height, so as to drive the movable ring plate 3 to move back and forth in the horizontal direction;

[0049] The principle of the rotating plate 9 reciprocating rotation on the first support plate 11 is as follows:

[0050] The other end penetrates the limiting frame 8 and is fixedly connected with a bevel gear 16. The end of the rotating plate 7 is rotatably connected with an inclined tooth plate 17 engaged with the bevel gear 16. The inclined tooth plate 17 slides back and forth in the limiting frame 8, so that the inclined tooth plate 17 contacts the bevel gear 16, thereby making the bevel gear 16 rotate on the first support plate 11, making the rotating rod 15 rotate on the first support plate 11, and making the rotating plate 9 reciprocating rotate on the first support plate 11.

[0051] The two ends of the inclined tooth plate 17 are smooth plates, which facilitate the sliding of the inclined tooth plate 17 engaged with the bevel gear 16 to drive the bevel gear 16 to rotate.

[0052] The principle of the rotating plate 9 reciprocating rotation on the first support plate 11 is as follows:

[0053] The end of the rotating rod 15 extends out of the central axis of the rotating plate 9. The inner wall of the movable ring plate 3 is fixedly connected with limiting sliding plates 18 arranged in an inclined manner. The inclination angle of the limiting sliding plates 18 is consistent with the inclination angle of the plurality of fixed columns 10.

[0054] The rotating plate 9 rotates, engages with the plurality of fixed columns 10, and the plurality of fixed columns 10 move in a circular manner, thereby making the movable ring plate 3 move in a circular manner. Since the plurality of fixed columns 10 are arranged at an inclined angle, the movable ring plate 3 moves up and down synchronously.

[0055] The clamping of the limiting sliding plates 18 with the same inclined angle ensures the stability of the up-and-down reciprocating movement of the movable ring plate 3.

[0056] The side of the rotating plate 9 close to the inner wall of the movable ring plate 3 is arc-shaped, and the rotating plate 9 is away from the limiting sliding plates 18, so as to avoid the rotating plate 9 from touching the movable ring plate 3 and the limiting sliding plates 18 when rotating.

[0057] Further explanation of the stable engagement of the rotating plate 9 and the fixed column 10 is as follows:

[0058] The first support plate 11 is fixedly connected with a connecting plate 20. The connecting plate 20 is fixedly connected with a pressing plate 21 that is in sliding cooperation with the limiting sliding plates 18. The top of the pressing plate 21 is at an angle consistent with the inclination angle of the limiting sliding plates 18. The pressing plate 21 presses the bottom surface of the limiting sliding plates 18, and the rotating rod 15 presses the top surface of the limiting sliding plates 18, so as to maintain the stable engagement of the rotating plate 9 and the fixed column 10.

[0059] The connecting plate 20 away from the rotating plate 9 is L-shaped, avoiding the connecting plate 20 from contacting the connecting plate 20, the pressing plate 21 is T-shaped, increasing the contact surface of the pressing plate 21 and the limiting slide plate 18, further ensuring the engagement of the rotating plate 9 and the fixed column 10.

[0060] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A desulfurization tower for recovering sulfur dioxide from a sulfuric acid tail gas, comprising: The utility model discloses a tower body (1) is equipped with ammonia water, the tower body (1) is equipped with the air inlet pipe (2) in, and the air inlet pipe (2) is equipped with the ammonia water in. Its characterized in that still include: the air inlet pipe (2) is installed with multiple high -efficient activated carbon layers, the tower body (1) is equipped with the movable ring plate (3) in the activity, the movable ring plate (3) with air inlet pipe (2) between communication has multiple loose hose (4), the hose (4) and movable ring plate (3) all are equipped with the air -permeable hole (5) on, the tower body (1) is driven rotation and is equipped with the stirring part (6) in, the stirring part (6) bottom fixedly connected with the rotating plate (7), the tower body (1) is slidably connected with the limiting frame (8) of inclined distribution through the limiting piece, and the limiting frame (8) is equipped with the sliding part between the rotating plate (7). The rotating plate (9) is rotated through the sliding part, the movable ring plate (3) inner wall fixedly connected with multiple inclined arrangement fixed column (10), the rotating plate (9) with multiple fixed column (10) meshing cooperation. The limiting frame (8) middle part fixedly connected with first support plate (11) and second support plate (12), and the second support plate (12) end portion is pressed and fits with the movable ring plate (3). The sliding part includes the autorotation rod (15) rotationally connected with the first support plate (11), one end of the autorotation rod (15) is connected with the rotating plate (9) and is fixed, the other end penetrates into the limiting frame (8) and is fixedly connected with the bevel gear (16), and the end portion of the rotating plate (7) is rotationally connected with the inclined tooth plate (17) meshing with the bevel gear (16), and the inclined tooth plate (17) slides in the limiting frame (8).

2. The desulphurization tower for recovering sulphur dioxide from sulphuric acid tail gas according to claim 1, characterized in that: The limiting piece includes the fixed plate (13) connected with the air inlet pipe (2) and is fixed, the fixed plate (13) top fixedly connected with the sleeve (14) slidingly fitted with the second support plate (12), and the air inlet pipe (2) is a hard air inlet pipe (2).

3. The desulphurization tower for recovering sulphur dioxide from sulphuric acid tail gas according to claim 2, characterized in that: The end of the autorotation rod (15) extends the central axis of the rotating plate (9), the movable ring plate (3) inner wall fixedly connected with the inclined distribution limiting slide plate (18), and the inclination angle of the limiting slide plate (18) is consistent with the inclination angle of multiple fixed column (10).

4. The desulphurization tower for recovering sulphur dioxide from sulphuric acid tail gas according to claim 3, characterized in that: The rotating plate (9) edge is equipped with multiple cooperation grooves (19) meshing with the fixed column (10), the side of the rotating plate (9) close to the inner wall of the movable ring plate (3) is arc-shaped, and the rotating plate (9) is away from the limiting slide plate (18).

5. The desulphurization tower for recovering sulphur dioxide from sulphuric acid tail gas according to claim 4, characterized in that: The first support plate (11) bottom fixedly connected with the connecting plate (20), the connecting plate (20) is fixedly connected with the abutting plate (21) slidingly fitted with the limiting slide plate (18), and the abutting plate (21) top is at the angle consistent with the inclination angle of the limiting slide plate (18).

6. The desulphurization tower for recovering sulphur dioxide from sulphuric acid tail gas according to claim 5, characterized in that: The connecting plate (20) away from the rotating plate (9) is L-shaped, and the abutting plate (21) is T-shaped structure.

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