Kiln tail waste gas efficient denitration device

Abstract

The utility model relates to the technical field of waste gas denitration, in particular to a kiln tail waste gas efficient denitration device which comprises a base. An air inlet cavity is formed below the liquid storage cavity; a plurality of cutters are rotationally installed in the liquid storage cavity, a plurality of air stones are fixedly installed at the positions, located below the cutters, of the inner bottom of the liquid storage cavity, and air nozzles of the air stones communicate with the air inlet cavity; tail gas enters the liquid storage cavity in the form of bubbles through the multiple bubble stones, the bubbles rise in the solution in the liquid storage cavity, meanwhile, the multiple bubbles are cut and broken through the cutter, the bubbles are cut into a large number of small bubbles, and the tail gas in the bubbles and the unreacted solution are subjected to denitration reaction; the bubbles are separated from the solution, continuously rise into the upper tower body and are subjected to denitration reaction with the solution sprayed by the spray head again; according to the design, the unreacted solution at the bottom in the tower body can be reused, so that the denitration effect on the kiln tail gas is improved, and the waste of the solution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas denitration, in particular to a high-efficiency denitration device for waste gas at kiln tail. Background Art

[0002] Cement kiln exhaust gases primarily contain harmful substances such as nitrogen oxides (NOx), dust, and sulfur dioxide (SO2). NOx, a major atmospheric pollutant, poses a serious threat to the environment and human health. Therefore, denitrification is required before exhaust gas is discharged, and the most commonly used denitrification equipment is the exhaust gas purification tower.

[0003] The utility model patent with authorization announcement number CN211358323U discloses an industrial tail gas desulfurization and denitrification treatment device, which includes a denitrification tower, an air inlet pipe and an air outlet pipe are fixedly connected to the denitrification tower, a water pump is fixedly installed on one side of the denitrification tower, a connecting pipe is fixedly connected to the water outlet of the water pump, three branch pipes are fixedly connected to the connecting pipe, the three branch pipes are all fixedly installed in the denitrification tower, and multiple nozzles are fixedly connected to the three branch pipes. Guide plates are fixedly connected to the inner walls of both sides of the denitrification tower, a movable seat is slidably installed in the denitrification tower, a rotating groove is provided at the bottom of the movable seat, a rotating column is rotatably installed in the rotating groove, a fan blade is fixedly installed at the bottom of the rotating column, a first gear is fixedly sleeved on the rotating column, a first rack is fixedly installed in the denitrification tower, and the first rack is meshed with the first gear. The water inlet pipe of the water pump is connected to the water tank, and the water is transported to the connecting pipe. The connecting pipe transports the water to the three branch pipes. After the exhaust gas enters the denitrification tower, the two guide plates guide the gas to flow. The water sprayed from the nozzle can spray the exhaust gas evenly and fully. The servo motor drives the sprocket to rotate, and the chain drives the connecting rod to move back and forth. The moving block slides on the second rack and drives the second rack to move back and forth.

[0004] Although the industrial tail gas desulfurization and denitrification treatment device is conducive to the uniform and sufficient spraying of the solution on the tail gas, the device still has the following problems in actual use: under the spraying of multiple nozzles, a large amount of solution will fall to the inner bottom of the tower body, and the solution cannot completely react with the tail gas during the falling process, so some unreacted solution will fall to the bottom of the tower body, which not only affects the purification effect of the tail gas, but also leads to the waste of solution. In view of this, we propose an efficient denitrification device for kiln tail exhaust gas. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency denitrification device for kiln tail exhaust gas to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The cam is provided with a plurality of air intake ports, and the air intake ports are connected to the air intake ports through a plurality of air intake ports. The cam is provided with a plurality of air intake ports, and the air intake ports are connected to the air intake ports through a plurality of air intake ports. The cam is provided with a plurality of air intake ports, and the air intake ports are connected to the air intake ports through a plurality of air intake ports. The cam is provided with a plurality of air intake ports, and the air intake ports are connected to the air intake ports through a plurality of air intake ports. The cam is provided with a plurality of air intake ports, and the air intake ports are connected to the air intake ports through a plurality of air intake ports.

[0008] A hollow upper tower body is installed above the lower tower body, and an exhaust port is installed on the top of the upper tower body;

[0009] A liquid pump is installed at the top front side of the base, a liquid inlet pipe is installed at the liquid inlet of the liquid pump, a liquid discharge pipe is installed at the liquid outlet of the liquid pump, two horizontal pipes are installed on the outer wall of the liquid discharge pipe, the horizontal pipes penetrate into the upper tower body, and multiple nozzles are installed at the bottom end of the outer wall of the horizontal pipe.

[0010] As a preferred technical solution of the present invention, the cross-section of the base is in a U-shape, and the motor is fixedly connected to the inner top of the base by bolts.

[0011] As a preferred technical solution of the present invention, a sewage pipe connected to the liquid storage chamber is fixed on the outer wall of the lower tower body, and a valve is installed on the sewage pipe.

[0012] As a preferred technical solution of the present invention, the plurality of cutters are distributed in a circular shape with equal intervals, and the plurality of bubble stones are distributed in a circular shape with equal intervals around the transmission shaft.

[0013] As a preferred technical solution of the present invention, the lower tower body is fixedly connected to the base by bolts, and the liquid pump is fixedly connected to the base by bolts.

[0014] As a preferred technical solution of the present invention, two inspection ports are fixed on the outer wall of the upper tower body, and sealing covers are installed at the inspection ports by bolts.

[0015] As a preferred technical solution of the present invention, the lower tower body is fixedly connected to the upper tower body by bolts, and the inner diameter of the lower tower body is larger than the inner diameter of the upper tower body.

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

[0017] Through the setting of the lower tower body and the upper tower body: the exhaust gas enters the air inlet chamber, and enters the liquid storage chamber in the form of bubbles through multiple bubble stones. The bubbles rise in the solution in the liquid storage chamber, and at the same time, the high-speed rotating cutter cuts and breaks the multiple bubbles, and the bubbles are divided into a large number of small bubbles, and the exhaust gas in the bubbles reacts with the unreacted solution for denitrification, and the bubbles separate from the solution and continue to rise to the upper tower body, and react with the solution sprayed by the nozzle for denitrification again; this design can reuse the unreacted solution at the bottom of the tower body, which not only improves the denitrification effect of the kiln tail exhaust, but also avoids the waste of solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 This is a structural cross-sectional view of the lower tower body of the utility model;

[0021] Figure 4 It is a partial structural diagram of the utility model;

[0022] In the picture:

[0023] 1. Base;

[0024] 2. Lower tower body; 20. Liquid storage chamber; 200. Drain pipe; 201. Valve; 21. Air intake chamber; 210. Air intake pipe; 22. Air stone; 23. Cutter; 24. Drive shaft; 25. Secondary pulley; 26. Rotating shaft; 27. Main pulley; 28. Belt; 29. ​​Motor;

[0025] 3. Upper tower body; 30. Inspection port; 31. Exhaust port;

[0026] 4. Liquid pump; 40. Liquid inlet pipe; 41. Liquid discharge pipe; 42. Horizontal pipe; 43. Nozzle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] This embodiment provides a technical solution:

[0029] See also Figures 1-4As shown, a high-efficiency denitrification device for waste gas from a kiln tail is provided, comprising a base 1, a lower tower body 2 is installed at the rear side of the top of the base 1, a liquid storage chamber 20 is provided at the top of the lower tower body 2, an air intake chamber 21 is provided below the liquid storage chamber 20, and a partition is provided between the liquid storage chamber 20 and the air intake chamber 21; a plurality of cutters 23 are rotatably installed in the liquid storage chamber 20, a transmission shaft 24 is coaxially keyed to the bottom of the cutter 23, the bottom end of the transmission shaft 24 penetrates into the air intake chamber 21, a plurality of bubble stones 22 are fixedly installed at the bottom of the liquid storage chamber 20 below the cutter 23, and the air nozzle of the bubble stone 22 is connected to the air intake chamber 21; a secondary pulley 25 is coaxially keyed to the transmission shaft 24, and a rotating shaft 26 is rotatably installed at the center of the air intake chamber 21. , a main pulley 27 is coaxially keyed to the rotating shaft 26, and a belt 28 is sleeved between the main pulley 27 and the secondary pulley 25; a motor 29 for driving the rotating shaft 26 is installed at the bottom of the lower tower body 2; an air intake pipe 210 connected to the air intake chamber 21 is installed on the outer wall of the lower tower body 2; a hollow upper tower body 3 is installed above the lower tower body 2, and an exhaust port 31 is installed on the top of the upper tower body 3; a liquid pump 4 is installed at the top front side of the base 1, a liquid inlet pipe 40 is installed at the liquid inlet of the liquid pump 4, and a discharge pipe 41 is installed at the liquid outlet of the liquid pump 4. Two horizontal pipes 42 are installed on the outer wall of the discharge pipe 41, and the horizontal pipe 42 penetrates into the upper tower body 3. A plurality of nozzles 43 are installed at the bottom end of the outer wall of the horizontal pipe 42.

[0030] In this embodiment, the cross-section of the base 1 is in the shape of a square, and the motor 29 is fixedly connected to the inner top of the base 1 by bolts. The square-shaped base 1 can provide better support for the lower tower body 2, and the bolt fixing method ensures the installation stability of the motor 29.

[0031] In this embodiment, a drain pipe 200 is fixed to the outer wall of the lower tower body 2 and is connected to the liquid storage chamber 20. A valve 201 is installed on the drain pipe 200. The drain pipe 200 is convenient for draining the solution in the liquid storage chamber 20, and the valve 201 is convenient for controlling the discharge.

[0032] In this embodiment, multiple cutters 23 are distributed in a circular pattern with equal spacing, and multiple bubble stones 22 are distributed in a circular pattern with equal spacing around the drive shaft 24. The multiple bubble stones 22 are arranged around the multiple cutters 23, so that the exhaust bubbles generated by the bubble stones 22 can be cut and broken by the cutters 23 during their rise, allowing the fine bubbles to react more effectively with the solution, thereby improving the effectiveness and efficiency of the reaction.

[0033] In this embodiment, the lower tower body 2 is fixedly connected to the base 1 by bolts, and the liquid pump 4 is fixedly connected to the base 1 by bolts. The bolt fixing method ensures the installation reliability and stability of the lower tower body 2 and the liquid pump 4 to the base 1.

[0034] In this embodiment, two inspection openings 30 are fixed on the outer wall of the upper tower body 3, and sealing covers are installed at the inspection openings 30 by bolts. The inspection openings 30 are provided to facilitate inspection of the interior of the upper tower body 3.

[0035] In this embodiment, the lower tower body 2 is fixedly connected to the upper tower body 3 by bolts, and the inner diameter of the lower tower body 2 is larger than the inner diameter of the upper tower body 3. It should be noted that the bolted fixing method ensures the reliability of the connection between the lower tower body 2 and the upper tower body 3, and the larger inner diameter of the lower tower body 2 facilitates better collection of the reaction solution falling from the upper tower body 3.

[0036] It should be added that, in this embodiment, the transmission shaft 24 is installed with an O-shaped rubber sealing ring through the partition. The rubber sealing ring has good elasticity and sealing performance, which can prevent the solution in the liquid storage chamber 20 from penetrating into the air inlet chamber 21.

[0037] It is worth noting that the motor 29 involved in this embodiment is an existing conventional technology and will not be described in detail here.

[0038] During specific use, the user first turns on the power of the motor 29 and the liquid pump 4, and the motor 29 and the liquid pump 4 start working. At this time, the reaction solution enters the discharge pipe 41 and the cross pipe 42 through the liquid inlet pipe 40, and the reaction solution is sprayed into the interior of the upper tower body 3 through multiple nozzles 43. At the same time, the output shaft of the motor 29 rotates to drive the rotating shaft 26 and the main pulley 27 to rotate. Under the action of multiple belts 28, multiple secondary pulleys 25 rotate and drive the transmission shaft 24 and the cutter 23 to rotate. At the same time, the exhaust gas from the kiln tail enters the air intake chamber 21 through the air intake pipe 210, and the exhaust gas from the kiln tail enters the bubble stone 22. The bubble stone 22 discharges a large number of bubbles. When the bubbles pass through the cutter 23, the bubbles are cut and broken. When the bubbles rise in the solution, they react with the solution for denitrification. Finally, the bubbles break away from the solution inside the lower tower body 2 and rise to the upper tower body 3. The solution sprayed by the nozzle 43 reacts with the tail gas for denitrification again. Finally, the reacted gas is discharged to the outside through the exhaust port 31.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency denitrification device for kiln tail exhaust gas, comprising a base (1), characterized in that: A lower tower body (2) is installed at the rear side of the top of the base (1), a liquid storage chamber (20) is provided at the top of the lower tower body (2), an air intake chamber (21) is provided below the liquid storage chamber (20), and a partition is provided between the liquid storage chamber (20) and the air intake chamber (21); a plurality of cutters (23) are rotatably installed in the liquid storage chamber (20), a transmission shaft (24) is coaxially keyed at the bottom of the cutter (23), the bottom end of the transmission shaft (24) penetrates into the air intake chamber (21), and a plurality of air bubbles (22) are fixedly installed at the bottom of the liquid storage chamber (20) below the cutter (23). ), the air nozzle of the bubble stone (22) is connected to the air inlet chamber (21); a secondary pulley (25) is coaxially keyed on the transmission shaft (24); a rotating shaft (26) is rotatably mounted at the center of the air inlet chamber (21); a main pulley (27) is coaxially keyed on the rotating shaft (26); a belt (28) is sleeved between the main pulley (27) and the secondary pulley (25); a motor (29) for driving the rotating shaft (26) to rotate is installed below the lower tower body (2); an air inlet pipe (210) connected to the air inlet chamber (21) is installed on the outer wall of the lower tower body (2); A hollow upper tower body (3) is installed above the lower tower body (2), and an exhaust port (31) is installed at the top of the upper tower body (3); A liquid pump (4) is installed at the top front side of the base (1); a liquid inlet pipe (40) is installed at the liquid inlet of the liquid pump (4); a liquid discharge pipe (41) is installed at the liquid outlet of the liquid pump (4); two transverse pipes (42) are installed on the outer wall of the liquid discharge pipe (41); the transverse pipes (42) penetrate into the upper tower body (3); and a plurality of nozzles (43) are installed at the bottom end of the outer wall of the transverse pipe (42).

2. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: The cross-section of the base (1) is in the shape of a square, and the motor (29) is fixedly connected to the inner top of the base (1) via bolts.

3. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: A sewage pipe (200) communicating with the liquid storage chamber (20) is fixed on the outer wall of the lower tower body (2), and a valve (201) is installed on the sewage pipe (200).

4. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: The plurality of cutters (23) are distributed in a circular manner with equal intervals, and the plurality of air bubbles (22) are distributed in a circular manner with equal intervals around the transmission shaft (24).

5. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: The lower tower body (2) is fixedly connected to the base (1) via bolts, and the liquid pump (4) is fixedly connected to the base (1) via bolts.

6. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: Two inspection openings (30) are fixed on the outer wall of the upper tower body (3), and sealing covers are installed at the inspection openings (30) by means of bolts.

7. The high-efficiency denitrification device for kiln tail gas according to claim 1, characterized in that: The lower tower body (2) is fixedly connected to the upper tower body (3) via bolts, and the inner diameter of the lower tower body (2) is larger than the inner diameter of the upper tower body (3).

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