Desulfurization device for cement kiln

Abstract

The utility model relates to the field of desulfurization devices, in particular to a cement kiln desulfurization device which comprises a desulfurization bin, a mixing box for storing desulfurization liquid and a desulfurization mechanism, the desulfurization mechanism located in the desulfurization bin comprises a demister, a second water storage cylinder, a first water storage cylinder and a dust screen which are sequentially distributed on the desulfurization bin from top to bottom, a channel is formed in the first water storage cylinder, a plurality of atomizers distributed in an annular array are arranged on the first water storage cylinder and the second water storage cylinder, the channel is located below the second water storage cylinder, and the dust screen is located below the second water storage cylinder. The radius value of the second water storage cylinder is larger than that of the channel. According to the utility model, when the gas is desulfurized through the desulfurizing liquid, the gas can be uniformly and comprehensively covered, and the gas can be quickly desulfurized under the condition of avoiding influencing the normal circulation of the gas.

Description

Technical Field

[0001] The utility model relates to the field of desulfurization devices, in particular to a cement kiln desulfurization device. Background Art

[0002] Cement kiln desulfurization device is an environmental protection facility used to reduce sulfur oxide emissions during cement production. With the increasing awareness of environmental protection and the strict implementation of relevant regulations, the cement industry has a growing demand for desulfurization technology. The design and application of desulfurization devices are crucial to controlling SO2 emissions during cement production.

[0003] Chinese patent announcement number CN219836335U discloses a cement kiln desulfurization device, including: a shell, a partition, a filler, and a spray pipe; the upper and lower ends of the shell are respectively provided with an air outlet and an air inlet, a plurality of partitions are fixedly installed inside the shell, the plurality of partitions divide the inside of the shell into a plurality of single layers, a plurality of fillers are laid on the partition, a plurality of sieve holes are opened on the partition, the sieve holes are used to pass the desulfurization liquid and the flue gas and prevent the filler from falling, the air inlet extends inwardly in the shell for a certain length, an air inlet fan is provided at the air inlet, the air inlet fan is used to assist air intake, the air outlet is provided with an air outlet fan, the air outlet fan is used to assist air outlet, a plurality of pressurization ports are provided on the shell, and a pressurization fan is provided in the pressurization port. The desulfurization device purifies and desulfurizes the flue gas generated by the cement kiln through multiple single layers, thereby efficiently purifying and desulfurizing the flue gas generated by the cement kiln.

[0004] However, the above technical solution has the following shortcomings: although each layer can be purified and desulfurized by the desulfurization liquid, the filler will not only block the sieve holes of the partition part, affecting the gas circulation, but also the linear distribution and fixing method of the spray pipe will cause the sprayed desulfurization liquid to cover unevenly downwards. When the gas passes through the filler and the sieve holes, it is difficult to ensure that the gas can fully contact with the desulfurization liquid. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a cement kiln desulfurization device, which can not only achieve uniform and comprehensive coverage of the gas when desulfurizing the gas through the desulfurization liquid, but also quickly desulfurize the gas without affecting the normal circulation of the gas.

[0006] The technical solution of the utility model is a cement kiln desulfurization device, comprising a desulfurization bin, a mixing box for storing desulfurization liquid, and a desulfurization mechanism; the desulfurization mechanism located in the desulfurization bin comprises a demister, a second water storage cylinder, a first water storage cylinder and a dust screen which are arranged on the desulfurization bin in sequence from top to bottom, a channel is arranged on the first water storage cylinder, and a plurality of atomizers distributed in a circular array are arranged on the first water storage cylinder and the second water storage cylinder, the channel is located below the second water storage cylinder, and the radius value of the second water storage cylinder is greater than the radius value of the channel.

[0007] Preferably, an air inlet pipe is provided on the desulfurization bin, an air inlet fan is provided inside the air inlet pipe, an exhaust pipe is provided at the upper end of the desulfurization bin, and an exhaust fan is provided inside the exhaust pipe.

[0008] Preferably, a connecting column for connecting to a second water storage cylinder is provided on the top of the desulfurization bin.

[0009] Preferably, the bottom of the desulfurization bin is connected to a guide cylinder, which gradually shrinks from top to bottom, and a slag discharge pipe is provided at the bottom end of the guide cylinder, and a control valve is provided on the slag discharge pipe.

[0010] Preferably, a conveying mechanism for conveying desulfurization liquid is provided on the mixing box, and the conveying mechanism includes a water outlet pipe, a water pump arranged on the mixing box, a first branch pipe connected to the first water storage cylinder, a second branch pipe connected to the second water storage cylinder, and a water inlet pipe extending into the mixing box. The input end and the output end of the water pump are respectively connected to the water inlet pipe and the water outlet pipe, and the first branch pipe and the second branch pipe are both connected to the water outlet pipe.

[0011] Preferably, a stirring mechanism is provided in the mixing box, and the stirring mechanism comprises three rotating rods arranged in an annular array and rotatably disposed on the mixing box, a plurality of stirring blades connected to the rotating rods and arranged equidistantly along the axial direction, and a driving mechanism for driving the rotating rods to rotate.

[0012] Preferably, the driving mechanism includes a motor arranged on the mixing box, a rotating shaft rotatably arranged on the mixing box, a first gear coaxially arranged on the rotating shaft and a second gear coaxially arranged on the rotating rod, the motor is drivingly connected to the rotating shaft, and the first gear is meshingly connected to the second gear.

[0013] Preferably, a feeding funnel for adding desulfurization liquid raw materials is provided on the mixing box.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. By utilizing the height difference to install the first water storage cylinder and the second water storage cylinder, the spray from the second water storage cylinder can pass through the channel of the first water storage cylinder for desulfurization, which not only allows the atomized desulfurization liquid to fully cover the bottom, but also reserves a discharge channel for the gas, so that the gas can not only be fully and evenly contacted by the desulfurization liquid during the desulfurization process to ensure the desulfurization effect, but also will not block the flow of gas, thereby ensuring the desulfurization rate.

[0016] 2. The stirring mechanism can quickly stir and mix the raw materials of the desulfurization liquid, and the mixing effect is uniform, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of a desulfurization bin;

[0019] Figure 3 Schematic diagram of the internal structure of the mixing box;

[0020] Figure 4 It is a structural schematic diagram of the stirring mechanism.

[0021] Figure numerals: 1. desulfurization bin; 2. air inlet pipe; 3. air inlet fan; 4. guide cylinder; 5. dust net; 6. first water storage cylinder; 7. atomizer; 8. channel; 9. connecting column; 10. second water storage cylinder; 11. water outlet pipe; 12. first branch pipe; 13. second branch pipe; 14. demister; 15. exhaust pipe; 16. exhaust fan; 17. slag discharge pipe; 18. control valve; 19. mixing box; 20. water pump; 21. water inlet pipe; 22. motor; 23. rotating shaft; 24. first gear; 25. rotating rod; 26. second gear; 27. stirring blade; 28. feed funnel. DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 As shown, a cement kiln desulfurization device proposed in this embodiment includes a desulfurization bin 1, a mixing box 19 for storing desulfurization liquid, and a desulfurization mechanism; the desulfurization mechanism located in the desulfurization bin 1 includes a demister 14, a second water storage cylinder 10, a first water storage cylinder 6 and a dust screen 5 arranged on the desulfurization bin 1, which are distributed from top to bottom in sequence, a channel 8 is provided on the first water storage cylinder 6, and a plurality of atomizers 7 distributed in a circular array are provided on the first water storage cylinder 6 and the second water storage cylinder 10. The channel 8 is located below the second water storage cylinder 10, and the axial center line of the channel 8 coincides with the axial center line of the second water storage cylinder 10, so as to facilitate the installation of the second water storage cylinder 10 while ensuring the desulfurization effect. The radius value of the second water storage cylinder 10 is greater than the radius value of the channel 8, so as to ensure that the second water storage cylinder 10 can cover the channel 8 when spraying. An air intake pipe 2 is provided on the desulfurization bin 1, an air intake fan 3 is provided inside the air intake pipe 2, an exhaust pipe 15 is provided at the upper end of the desulfurization bin 1, an exhaust fan 16 is provided inside the exhaust pipe 15, and a connecting column 9 for connecting to a second water storage cylinder 10 is provided at the top of the desulfurization bin 1.

[0024] In this embodiment, the gas is introduced into the desulfurization chamber 1 from the air intake pipe 2 by the air intake fan 3, the dust in the gas is first blocked by the dustproof net 5, and then the desulfurization liquid in the first water storage cylinder 6 and the second water storage cylinder 10 is atomized and sprayed out by the atomizer 7 to desulfurize the gas. Due to the setting of the channel 8, the first water storage cylinder 6 and the second water storage cylinder 10 have a height difference when spraying, which can make the atomized desulfurization liquid cover the gas and reserve a discharge channel for the gas. In the process of desulfurization, the gas can not only be contacted with the desulfurization liquid in an all-round and uniform manner to ensure the desulfurization effect, but also will not block the circulation of the gas, thereby ensuring the desulfurization rate. The desulfurized gas is defogged by the demister 14 to meet the emission requirements, and finally discharged from the exhaust pipe 15 under the action of the exhaust fan 16.

[0025] Embodiment 2

[0026] like Figure 1-Figure 3 As shown, a cement kiln desulfurization device proposed in this embodiment, compared with Example 1, in this embodiment, a feeding funnel 28 for adding desulfurization liquid raw materials is provided on the mixing box 19, and a stirring mechanism is provided in the mixing box 19, the stirring mechanism includes three rotating rods 25 arranged in a ring array and rotatably arranged on the mixing box 19, a plurality of stirring blades 27 equidistantly arranged along the axial direction on the rotating rod 25, and a driving mechanism for driving the rotating rod 25 to rotate, the driving mechanism includes a motor 22 arranged on the mixing box 19, a rotating shaft 23 rotatably arranged on the mixing box 19, a first gear 24 coaxially arranged on the rotating shaft 23 and a second gear 26 coaxially arranged on the rotating rod 25, the motor 22 is drivingly connected to the rotating shaft 23, and the first gear 24 is meshingly connected to the second gear 26.

[0027] The mixing box 19 is provided with a conveying mechanism for conveying desulfurization liquid, which includes a water outlet pipe 11, a water pump 20 arranged on the mixing box 19, a first branch pipe 12 connected to the first water storage cylinder 6, a second branch pipe 13 connected to the second water storage cylinder 10 and a water inlet pipe 21 extending into the mixing box 19. The input end and the output end of the water pump 20 are respectively connected to the water inlet pipe 21 and the water outlet pipe 11, and the first branch pipe 12 and the second branch pipe 13 are both connected to the water outlet pipe 11.

[0028] In this embodiment, the mixed raw materials of desulfurization liquid are added into the mixing box 19 through the feeding funnel 28, and then the motor 22 is started to drive the rotating shaft 23 to rotate, and the rotating shaft 23 drives the first gear 24 to rotate, and then the first gear 24 and the second gear 26 are meshed and transmitted, and the second gear 26 drives the rotating rod 25 to rotate, and the rotating rod 25 drives the stirring blade 27 to rotate, which not only realizes the rapid and uniform stirring of the raw materials, but also saves time and labor. After the stirring blade 27 stirs and mixes the raw materials fully, the desulfurization liquid in the mixing box 19 is extracted through the water pump 20 and the water inlet pipe 21, and is transported into the interior of the first water storage cylinder 6 and the second water storage cylinder 10 through the outlet pipe 11, the first branch pipe 12 and the second branch pipe 13.

[0029] Embodiment 3

[0030] like Figure 1 As shown, a cement kiln desulfurization device proposed in this embodiment, compared with Example 1, in this embodiment, a guide cylinder 4 is provided at the bottom of the desulfurization bin 1, and the guide cylinder 4 gradually shrinks from top to bottom, and a slag discharge pipe 17 is provided at the bottom of the guide cylinder 4, and a control valve 18 is provided on the slag discharge pipe 17. When the desulfurization process is completed, the control valve 18 is opened to discharge and collect the waste slag at the bottom of the desulfurization bin 1 from the slag discharge pipe 17.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cement kiln desulfurization device, characterized in that: include: Desulfurization chamber (1); A mixing tank (19) for storing desulfurization liquid; A desulfurization mechanism is located in a desulfurization bin (1), and comprises a demister (14), a second water storage cylinder (10), a first water storage cylinder (6) and a dust screen (5) which are arranged in sequence from top to bottom on the desulfurization bin (1); a channel (8) is arranged on the first water storage cylinder (6); a plurality of atomizers (7) are arranged on the first water storage cylinder (6) and the second water storage cylinder (10) in a circular array; the channel (8) is located below the second water storage cylinder (10); and the radius of the second water storage cylinder (10) is greater than the radius of the channel (8).

2. A cement kiln desulfurization device according to claim 1, characterized in that: An air intake pipe (2) is provided on the desulfurization chamber (1), an air intake fan (3) is provided in the air intake pipe (2), an exhaust pipe (15) is provided at the upper end of the desulfurization chamber (1), and an exhaust fan (16) is provided in the exhaust pipe (15).

3. A cement kiln desulfurization device according to claim 1, characterized in that: A connecting column (9) for connecting to a second water storage cylinder (10) is provided on the top of the desulfurization bin (1).

4. A cement kiln desulfurization device according to claim 1, characterized in that: The bottom of the desulfurization bin (1) is connected to a guide tube (4), which gradually contracts from top to bottom. A slag discharge pipe (17) is provided at the bottom end of the guide tube (4), and a control valve (18) is provided on the slag discharge pipe (17).

5. A cement kiln desulfurization device according to claim 1, characterized in that: The mixing box (19) is provided with a conveying mechanism for conveying desulfurized liquid, the conveying mechanism comprising a water outlet pipe (11), a water pump (20) provided on the mixing box (19), a first branch pipe (12) connected to the first water storage cylinder (6), a second branch pipe (13) connected to the second water storage cylinder (10), and a water inlet pipe (21) extending into the mixing box (19); the input end and the output end of the water pump (20) are respectively connected to the water inlet pipe (21) and the water outlet pipe (11); and the first branch pipe (12) and the second branch pipe (13) are both connected to the water outlet pipe (11).

6. A cement kiln desulfurization device according to claim 1, characterized in that: A stirring mechanism is arranged in the mixing box (19), and the stirring mechanism comprises three rotating rods (25) arranged in an annular array and rotatably arranged on the mixing box (19), a plurality of stirring blades (27) arranged equidistantly along the axial direction on the rotating rods (25), and a driving mechanism for driving the rotating rods (25) to rotate.

7. A cement kiln desulfurization device according to claim 6, characterized in that: The driving mechanism comprises a motor (22) arranged on a mixing box (19), a rotating shaft (23) rotatably arranged on the mixing box (19), a first gear (24) coaxially arranged on the rotating shaft (23), and a second gear (26) coaxially arranged on a rotating rod (25); the motor (22) is drivingly connected to the rotating shaft (23), and the first gear (24) is meshingly connected to the second gear (26).

8. A cement kiln desulfurization device according to claim 7, characterized in that: The mixing box (19) is provided with a feeding funnel (28) for adding desulfurized liquid raw materials.

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