Desulfurization oxidation air pipe device

Abstract

The utility model belongs to the technical field of desulfurization and oxidation air pipe devices, and discloses a desulfurization and oxidation air pipe device which comprises an oxidation fan and a desulfurization tower, the oxidation fan is connected with an oxidation air pipeline, and the oxidation air pipeline extends into the desulfurization tower and is provided with a plurality of vertical slurry nozzles. By arranging four slurry rotating nozzles and a plurality of slurry vertical nozzles, air can be sprayed into the desulfurization tower in a vertical and included angle manner, so that desulfurization slurry is in a rotating and rolling state, and the slurry can be in more sufficient contact with oxygen in the rotating and rolling state; according to the present invention, the activity of the calcium oxide is ensured, the desulfurization efficiency is improved, the oxygen supplementing manner is more beneficial to the generation of the gypsum in the slurry, the harm of pipeline blocking caused by the gypsum precipitation in the slurry can be further prevented, the desulfurization stone powder agent consumption is reduced, and the desulfurization operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of desulfurization and oxidation air duct devices, in particular to a desulfurization and oxidation air duct device. Background Art

[0002] The desulfurization project uses the limestone-gypsum wet desulfurization process to desulfurize the flue gas of the boiler. After the limestone dry powder is slurried, it is transported to the absorption tower area through a limestone slurry pump through a pipeline for desulfurization. The limestone slurry (CaO) reacts with SO2 in the flue gas to generate CaSO3 to achieve the purpose of desulfurization. During the operation, CaSO3 hinders the contact reaction between CaO and SO2, which directly affects the desulfurization efficiency. CaSO3 cannot be directly separated from the desulfurization slurry, so CaSO3 also needs to pass through the bottom of the desulfurization tower and react with the air blown by the oxidation fan to produce the desulfurization byproduct gypsum (CaSO4·2H2O), and finally achieve the purpose of desulfurization.

[0003] The existing oxidation air duct is arranged in an overall downward spraying manner, which can cause the slurry to roll up and down. In actual operation, the slurry around the desulfurization tower will be deposited with limestone and the slurry will not react fully. Utility Model Content

[0004] The utility model aims to provide a desulfurization oxidation air duct device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a desulfurization oxidation air duct device, comprising an oxidation fan and a desulfurization tower, the oxidation fan is connected to an oxidation air duct, the oxidation air duct extends into the desulfurization tower and is arranged with a plurality of slurry vertical nozzles, one end of the oxidation air duct extending into the desulfurization tower is evenly arranged with four slurry rotating nozzles along the circumferential direction, the oxidation air duct is arranged with a filter box, and a plurality of filter screens are inserted in the filter box.

[0006] Preferably, a groove is provided on the filter box, a plurality of limiting grooves are provided in the groove, and the filter screen is inserted into the limiting grooves.

[0007] Preferably, a cover body is clamped in the groove, a handle is arranged on the cover body, a plurality of T-shaped slots are provided at the bottom of the cover body, and a T-shaped plug block matched with the T-shaped slots is arranged on the top of the filter screen.

[0008] Preferably, a transmission cavity is provided in the cover body, a driving gear is rotatably installed in the transmission cavity, two transmission blocks are slidably arranged in the transmission cavity, a number of transmission teeth matching the driving gear are arranged on the transmission blocks, locking grooves matching the transmission blocks are provided on the inner walls on both sides of the groove, and an adjustment block is arranged on the driving gear that penetrates the cover body and extends to the outside.

[0009] Preferably, two mounting blocks are arranged in the transmission cavity, sliding rods are arranged on the mounting blocks, and sliding holes matched with the sliding rods are opened on the two transmission blocks.

[0010] Preferably, a return spring is sleeved on the slide rod, one end of the return spring is mounted on the mounting block, and the other end of the return spring is mounted on the transmission block.

[0011] Preferably, the four slurry rotating nozzles form an angle of 45° with the ground.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, air can be sprayed into the desulfurization tower vertically and at an angle through four slurry rotating nozzles and a plurality of slurry vertical nozzles, so that the desulfurization slurry can realize a rotating and tumbling state. The slurry can be more fully contacted with oxygen in the rotating and tumbling state, thereby ensuring the activity of calcium oxide and improving the desulfurization efficiency. This oxygen supplementation method is more conducive to the formation of gypsum in the slurry, and can further prevent the hazard of clogging the pipeline caused by the precipitation of gypsum in the slurry, thereby reducing the amount of desulfurization stone powder agent used and improving the desulfurization operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a desulfurization and oxidation air duct device proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a nozzle in a desulfurization tower of a desulfurization oxidation air duct device proposed by the utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the structures of the driving gear and transmission block of a desulfurization and oxidation air duct device proposed by the utility model;

[0017] Figure 4 A desulfurization oxidation air duct device proposed by the utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 5 The utility model provides a cross-sectional schematic diagram of the filter screen, regulating block, cover and other structures of a desulfurization and oxidation air duct device.

[0019] In the figure: 1. oxidation fan; 2. oxidation air duct; 3. filter box; 4. cover; 5. handle; 6. desulfurization tower; 7. slurry vertical nozzle; 8. slurry rotary nozzle; 9. transmission chamber; 10. driving gear; 11. transmission block; 12. sliding hole; 13. transmission tooth; 14. mounting block; 15. sliding rod; 16. reset spring; 17. locking groove; 18. T-shaped plug block; 19. T-shaped slot; 20. adjustment block; 21. limit groove; 22. filter screen; 23. groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A desulfurization oxidation air duct device includes an oxidation fan 1 and a desulfurization tower 6. The oxidation fan 1 is connected to an oxidation air duct 2, which extends into the desulfurization tower 6 and is provided with a plurality of slurry vertical nozzles 7. One end of the oxidation air duct 2 extending into the desulfurization tower 6 is provided with four slurry rotating nozzles 8 evenly arranged along the circumferential direction. A filter box 3 is provided on the oxidation air duct 2, and a plurality of filter screens 22 are inserted into the filter box 3.

[0022] Through the four slurry rotating nozzles 8 and several slurry vertical nozzles 7, air can be sprayed into the desulfurization tower 6 vertically and at an angle, so that the desulfurization slurry can achieve a rotating and tumbling state. When the slurry is in a rotating and tumbling state, the slurry can be more fully in contact with oxygen, thereby ensuring the activity of calcium oxide and improving the desulfurization efficiency. This oxygen supplementation method is more conducive to the formation of gypsum in the slurry, and can further prevent the gypsum precipitation in the slurry from causing the harm of clogging the pipeline, reducing the amount of desulfurization stone powder agent used while improving the desulfurization operation efficiency.

[0023] Specifically, in this embodiment, a groove 23 is formed on the filter box 3 , a plurality of limiting grooves 21 are formed in the groove 23 , and the filter screens 22 are inserted into the limiting grooves 21 .

[0024] By arranging the limiting grooves 21 , the position of the filter screen 22 can be limited, so that the filter screen 22 can better filter the debris in the air in the filter box 3 .

[0025] Specifically, in this embodiment, the cover body 4 is clamped in the groove 23, the cover body 4 is provided with a handle 5, a plurality of T-shaped slots 19 are provided at the bottom of the cover body 4, and a T-shaped plug 18 matched with the T-shaped slots 19 is provided at the top of the filter screen 22.

[0026] By cooperating with the T-shaped slot 19 and the T-shaped plug 18, the filter 22 can be connected to the cover 4. When the cover 4 is lifted by the handle 5, the filter 22 can be driven out of the limiting groove 21, thereby achieving the purpose of facilitating the disassembly and assembly of the filter 22.

[0027] Specifically, in this embodiment, a transmission cavity 9 is opened in the cover body 4, a driving gear 10 is rotatably installed in the transmission cavity 9, two transmission blocks 11 are slidably arranged in the transmission cavity 9, a plurality of transmission teeth 13 adapted to the driving gear 10 are arranged on the transmission block 11, locking grooves 17 adapted to the transmission block 11 are opened on the inner walls on both sides of the groove 23, and an adjustment block 20 is arranged on the driving gear 10 and extends through the cover body 4 to the outside.

[0028] By arranging the transmission cavity 9, the driving gear 10 and the transmission teeth 13 on the transmission block 11, when the cover body 4 needs to be disassembled, the driving gear 10 is rotated to drive the transmission block 11 to move closer to or away from each other, so that the transmission block 11 moves away from or is inserted into the locking groove 17, and the cover body 4 can be disassembled.

[0029] Specifically, in this embodiment, two mounting blocks 14 are arranged in the transmission cavity 9 , and sliding rods 15 are arranged on the mounting blocks 14 . Sliding holes 12 matched with the sliding rods 15 are formed on the two transmission blocks 11 .

[0030] By arranging the slide rod 15 and the slide hole 12 , the moving direction of the transmission block 11 can be guided, and the moving process of the transmission block 11 can be made smoother.

[0031] Specifically, in this embodiment, a return spring 16 is sleeved on the slide bar 15 , one end of the return spring 16 is mounted on the mounting block 14 , and the other end of the return spring 16 is mounted on the transmission block 11 .

[0032] By arranging a return spring 16 , the transmission block 11 can always be pressed against the inner wall of the transmission chamber 9 , thereby keeping the transmission block 11 always pressed against the locking groove 17 and maintaining the connection stability between the cover body 4 and the filter box 3 .

[0033] Specifically, in this embodiment, the four slurry rotating nozzles 8 form an angle of 45° with the ground.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A desulfurization oxidation air duct device, comprising an oxidation blower and a desulfurization tower, characterized in that: The oxidation fan is connected to an oxidation air duct, which extends into the desulfurization tower and is provided with a number of vertical slurry nozzles. One end of the oxidation air duct extending into the desulfurization tower has four slurry rotating nozzles evenly arranged along the circumferential direction. A filter box is arranged on the oxidation air duct, and a number of filter screens are inserted into the filter box.

2. A desulfurization oxidation air duct device according to claim 1, characterized in that: The filter box is provided with a groove, a plurality of limit grooves are provided in the groove, and the filter screen is inserted in the limit grooves.

3. A desulfurization oxidation air duct device according to claim 2, characterized in that: A cover body is clamped in the groove, a handle is arranged on the cover body, a plurality of T-shaped slots are provided at the bottom of the cover body, and a T-shaped plug block matched with the T-shaped slots is arranged on the top of the filter screen.

4. A desulfurization oxidation air duct device according to claim 3, characterized in that: A transmission cavity is provided in the cover body, a driving gear is rotatably installed in the transmission cavity, two transmission blocks are slidably arranged in the transmission cavity, a plurality of transmission teeth matching the driving gear are arranged on the transmission blocks, locking grooves matching the transmission blocks are provided on the inner walls on both sides of the groove, and an adjustment block is arranged on the driving gear and extends through the cover body to the outside.

5. A desulfurization oxidation air duct device according to claim 4, characterized in that: Two mounting blocks are arranged in the transmission cavity, sliding rods are arranged on the mounting blocks, and sliding holes matched with the sliding rods are opened on the two transmission blocks.

6. A desulfurization oxidation air duct device according to claim 5, characterized in that: A return spring is sleeved on the slide bar, one end of the return spring is mounted on the mounting block, and the other end of the return spring is mounted on the transmission block.

7. A desulfurization oxidation air duct device according to claim 1, characterized in that: The four slurry rotating nozzles form an angle of 45° with the ground.

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