Deacidification and dust removal reaction tower

Abstract

The utility model relates to a deacidification dedusting reaction tower, which relates to the technical field of flue gas treatment, and comprises a tower body, the top of the tower body is communicated with a smoke outlet pipe, the bottom of the tower body is communicated with a liquid discharge pipe, one side of the tower body is communicated with a liquid inlet pipe and a communicating pipe, and one side of the communicating pipe far away from the tower body is communicated with a dust falling box. A smoke inlet pipe is arranged on the dust falling box in a communicating manner, a first spray head is arranged in the dust falling box, a second spray head is arranged in the tower body, and the second spray head is positioned above the communicating pipe. The device has the effect of improving flue gas deacidification and dust removal.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to a deacidification and dust removal reaction tower. Background Art

[0002] Incineration is one of the main methods of garbage disposal, which can achieve the purpose of volume reduction, harmless disposal and resource disposal. In the process of garbage incineration, acidic gases such as hydrogen chloride, sulfur dioxide, hydrogen fluoride, nitrogen oxides and carbon monoxide will be produced. If these acidic gases are directly discharged without treatment, they will cause great harm to the atmosphere.

[0003] At present, a deacidification reaction tower is used to treat the above-mentioned acidic gas. When the flue gas enters the deacidification reaction tower, the alkaline solution sprayed by atomization in the deacidification reaction tower reacts with the acidic gas to achieve the purpose of deacidification. However, the deacidification reaction tower uses simple atomization spraying, resulting in poor deacidification and dust removal effects of the acidic gas entering the deacidification reaction tower. Utility Model Content

[0004] In order to improve the effect of deacidification and dust removal of flue gas, the present application provides a deacidification and dust removal reaction tower.

[0005] The present application provides a deacidification and dust removal reaction tower adopts the following technical solution:

[0006] A deacidification and dust removal reaction tower comprises a tower body, wherein the top of the tower body is connected to a smoke outlet pipe, the bottom of the tower body is connected to a liquid discharge pipe, one side of the tower body is connected to a liquid inlet pipe and a connecting pipe, the connecting pipe is connected to a dust reduction box away from the side of the tower body, the dust reduction box is connected to a smoke inlet pipe, a first nozzle is arranged in the dust reduction box, a second nozzle is arranged in the tower body, and the second nozzle is located above the connecting pipe.

[0007] By adopting the above technical scheme, before the flue gas is deacidified and dusted, the reaction liquid is first introduced into the tower body through the liquid inlet pipe, and then the first nozzle is made to spray water into the dust reduction box. When the flue gas is introduced into the dust reduction box through the smoke inlet pipe, the water sprayed by the first nozzle combines with the large-particle impurities in the flue gas, thereby increasing the weight of the large-particle impurities in the flue gas, and then causing the large-particle impurities in the flue gas to settle in the dust reduction box. After the flue gas is dusted once in the dust reduction box, the flue gas is introduced into the tower body through the connecting pipe, and the flue gas and the reaction liquid at the bottom of the tower body are subjected to secondary dust removal and primary deacidification, and then the flue gas and the reaction liquid sprayed by the second nozzle are subjected to tertiary dust removal and secondary deacidification, and then the flue gas is discharged from the smoke outlet pipe after three dust reduction treatments and two deacidification treatments, thereby achieving the purpose of improving the deacidification and dust removal effect of the flue gas.

[0008] Preferably, a spray water tank is arranged on the top of the dust reduction box, a spray water pump is connected to the spray water tank, and a spray water pipe is connected between the spray water pump and the first nozzle.

[0009] By adopting the above technical solution, spray water is stored in the spray water tank. When the spray water pump is started, the spray water pump sprays the water in the spray water tank into the spray water pipe, and the water in the spray water pipe is sprayed into the dust suppression box through the first nozzle.

[0010] Preferably, a smoke shield is fixedly arranged in the dust reduction box, and the smoke shield is located on the side of the first nozzle away from the smoke inlet pipe. The side wall and the bottom wall of the smoke shield are both in contact with the inner wall of the dust reduction box, and there is a flow channel between the top wall of the smoke shield and the top wall of the dust reduction box.

[0011] By adopting the above technical scheme, the flue gas moves from the smoke inlet pipe to the connecting pipe in the dust reduction box. After the smoke combines with the spray water in the dust reduction box, the smoke is blocked by the smoke baffle. The smoke needs to rise and continue to move from the flow channel to the connecting pipe. In the process of the smoke rising, the heavier impurities in the smoke are easily separated from the smoke, thereby achieving the purpose of improving the smoke dust removal effect.

[0012] Preferably, a smoke guide pipe is provided in the tower body, the top end of the smoke guide pipe is connected to the connecting pipe, and the bottom end of the smoke guide pipe is used to be inserted in the reaction liquid.

[0013] By adopting the above technical scheme, the flue gas in the dust reduction box enters the smoke guide pipe through the connecting pipe, and the flue gas in the smoke guide pipe passes into the reaction liquid under the guidance of the smoke guide pipe, thereby increasing the contact area between the flue gas and the reaction liquid, thereby achieving the purpose of improving the flue gas deacidification effect. At the same time, after the flue gas passes into the reaction liquid, the impurities in the flue gas are retained in the reaction liquid, while the gas insoluble in the liquid in the flue gas overflows, thereby achieving the purpose of improving the flue gas dust removal effect.

[0014] Preferably, a smoke guide plate is provided in the tower body, the smoke guide plate is located above the smoke guide pipe, a smoke guide hole is provided on the smoke guide plate, and the second nozzle is located above the smoke guide hole.

[0015] By adopting the above technical solution, when the smoke overflows from the reaction liquid, the smoke moves toward the smoke guide plate, and under the guidance of the smoke guide plate, the smoke moves from the smoke guide hole to the smoke outlet pipe.

[0016] Preferably, a reflux inlet pipe is connected to the second nozzle, the reflux inlet pipe passes through the side wall of the tower body, the reflux inlet pipe is connected to a reflux pump, the reflux pump is fixed on the side wall of the tower body, a reflux outlet pipe is connected to the input end of the reflux pump, and the reflux outlet pipe is connected to the tower body.

[0017] By adopting the above technical solution, the reflux pump is started, and the reflux pump causes the reaction liquid to flow back into the pipe through the reflux outlet pump. The reaction liquid in the reflux inlet pipe is sprayed to the smoke guide hole through the second nozzle. When the smoke moves upward from the smoke guide hole, the reaction water in the second nozzle is sprayed to the smoke, and then the smoke is deacidified and dusted again, so as to achieve the purpose of improving the deacidification and dust removal effect of the smoke.

[0018] Preferably, a wire mesh filter plate is provided in the tower body, the wire mesh filter plate is located above the reflux outlet pipe, and the wire mesh filter plate is located below the smoke guide pipe.

[0019] By adopting the above technical solution, the wire mesh filter plate intercepts the impurities in the reaction liquid, making it difficult for the impurities in the reaction liquid to enter the reflux outlet pipe, thereby making it difficult for the impurities in the reaction liquid to block the reflux outlet pipe, the reflux pump, the reflux inlet pipe and the second nozzle.

[0020] Preferably, an activated carbon filter plate and a defoaming plate are arranged in the tower body, the defoaming plate is located above the second nozzle, and the activated carbon filter plate is located above the defoaming plate.

[0021] By adopting the above technical solution, during the rising process of smoke, the smoke first passes through the defoaming plate to remove the tiny droplets entrained in the smoke, and then the smoke passes through the activated carbon filter plate to remove the irritating odor in the smoke, and finally the smoke is discharged from the smoke outlet pipe.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up the tower body, smoke outlet pipe, liquid discharge pipe, liquid inlet pipe, connecting pipe, dust reduction box, first nozzle, smoke inlet pipe and second nozzle, the flue gas is discharged from the smoke outlet pipe after three dust reduction treatments and two deacidification treatments, so as to achieve the purpose of improving the deacidification and dust removal effect of the flue gas;

[0024] 2. The smoke baffle and flow channel are set to improve the primary dust removal effect of the flue gas;

[0025] 3. By setting up the smoke guide pipe, the smoke can be deacidified and dusted twice. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of a deacidification and dust removal reaction tower in an embodiment of the present application.

[0027] Figure 2 yes Figure 1 Enlarged view of part A.

[0028] Figure 3 It is a schematic diagram showing the positional relationship between the smoke guide plate and the smoke guide hole in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. tower body; 11. smoke outlet pipe; 12. liquid discharge pipe; 13. liquid inlet pipe; 2. dust suppression box; 21. smoke inlet pipe; 3. connecting pipe; 31. smoke guide pipe; 4. first nozzle; 41. spray water pipe; 42. spray water tank; 43. spray water pump; 5. smoke baffle; 51. flow channel; 6. smoke guide plate; 61. smoke guide hole; 7. second nozzle; 71. reflux inlet pipe; 72. reflux pump; 73. reflux outlet pipe; 8. wire mesh filter plate; 9. activated carbon filter plate; 91. defoaming plate. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a deacidification and dust removal reaction tower. Figure 1 and Figure 2, which comprises a tower body 1, in which a second nozzle 7 is installed. A smoke outlet pipe 11 is connected to the top of the tower body 1, and a smoke outlet valve is installed on the smoke outlet pipe 11. A liquid discharge pipe 12 is connected to the bottom of the tower body 1, and a liquid discharge valve is installed on the liquid discharge pipe 12. A liquid inlet pipe 13 and a connecting pipe 3 are connected to one side of the tower body 1, and a liquid inlet valve is installed on the liquid inlet pipe 13. The connecting pipe 3 is located above the liquid inlet pipe 13, and the second nozzle 7 is located above the connecting pipe 3. A dust reduction box 2 is installed on the side of the connecting pipe 3 away from the tower body 1, and the connecting pipe 3 is connected to the dust reduction box 2 near the bottom. A smoke inlet pipe 21 is installed at one end of the dust reduction box 2 away from the connecting pipe 3, and the smoke inlet pipe 21 is connected to the outlet near the bottom of the dust reduction box 2, and a smoke inlet valve is installed on the smoke inlet pipe 21. A spray water tank 42 is installed on the top of the dust reduction box 2, and a spray water pump 43 is connected to the spray water tank 42, and a spray water pipe 41 is connected to the output end of the spray water pump 43. The end of the spray water pipe 41 away from the spray water pump 43 passes through the dust reduction box 2. The spray water pipe 41 is located in the dust reduction box 2 and is connected to the first nozzle 4. The first nozzle 4 is close to the top wall of the dust reduction box 2. Before the flue gas is deacidified and dusted, the reaction liquid is introduced into the tower body 1 through the liquid inlet pipe 13, and the water is stored in the spray water tank 42. When the spray water pump 43 is started, the spray water pump 43 sprays the water in the spray water tank 42 into the spray water pipe 41, and the water in the spray water pipe 41 is sprayed into the dust reduction box 2 through the first nozzle 4, and then the first nozzle 4 sprays water into the dust reduction box 2. When the flue gas is passed into the dust reduction box 2 from the smoke inlet pipe 21, the water sprayed by the first nozzle 4 combines with the large-sized impurities in the flue gas, so that the weight of the large-sized impurities in the flue gas increases, and then the large-sized impurities in the flue gas are settled in the dust reduction box 2. After the flue gas is subjected to a dust removal in the dust reduction box 2, the flue gas is introduced into the tower body 1 through the connecting pipe 3, and the flue gas and the reaction liquid at the bottom of the tower body 1 are subjected to a second dust removal and a first deacidification, and then the flue gas and the reaction liquid sprayed from the second nozzle 7 are subjected to a third dust removal and a second deacidification. After the flue gas is subjected to a second deacidification and a second dust removal in the tower body 1, the flue gas in the tower body 1 is discharged from the tower body 1 through the smoke outlet pipe 11. After the flue gas is subjected to a third dust removal and a second deacidification, the purpose of improving the flue gas deacidification and dust removal effect is achieved.

[0032] In order to improve the primary dust removal effect of flue gas, refer to Figure 1 A smoke baffle 5 is installed in the dust reduction box 2, and the smoke baffle 5 is located on the side of the first nozzle 4 away from the smoke inlet pipe 21. The side wall and the bottom wall of the smoke baffle 5 are both in contact with the inner wall of the dust reduction box 2, and a flow channel 51 exists between the top wall of the smoke baffle 5 and the top wall of the dust reduction box 2. After the smoke combines with the spray water in the dust reduction box 2, the smoke moves from the smoke inlet pipe 21 to the connecting pipe 3 in the dust reduction box 2. Therefore, after the smoke is blocked by the smoke baffle 5, the smoke needs to rise and continue to move from the flow channel 51 to the connecting pipe 3. Then, in the process of smoke rising, on the one hand, the smoke movement path is increased, and on the other hand, the impurities with heavier weight in the smoke are not easy to rise, so that the impurities with heavier weight in the smoke are easily separated from the smoke, thereby achieving the purpose of improving the primary dust removal effect of the smoke.

[0033] In order to improve the secondary dust removal and primary deacidification effect of flue gas, refer to Figure 1 A smoke guide pipe 31 is installed in the tower body 1, the top of the smoke guide pipe 31 is connected to the connecting pipe 3, and the bottom of the smoke guide pipe 31 is inserted in the reaction liquid. The flue gas in the dust suppression box 2 enters the smoke guide pipe 31 through the connecting pipe 3, and the flue gas in the smoke guide pipe 31 is guided into the reaction liquid by the smoke guide pipe 31. On the one hand, the flue gas reacts with the reaction liquid, and the contact area between the flue gas and the reaction liquid increases, which facilitates the primary deacidification of the flue gas; on the other hand, impurities in the flue gas are retained in the reaction liquid, while the gas insoluble in the liquid in the flue gas overflows, thereby achieving the purpose of secondary dust removal of the flue gas.

[0034] In order to improve the effect of flue gas tertiary dust removal and secondary deacidification, refer to Figure 1 and Figure 3 , a smoke guide plate 6 is installed in the tower body 1, and the smoke guide plate 6 is located above the smoke guide pipe 31. A smoke guide hole 61 is provided on the smoke guide plate 6, and the cross section of the smoke guide plate 6 is a truncated cone. A second nozzle 7 is installed in the tower body 1, and the second nozzle 7 is located directly above the smoke guide hole 61. When the smoke overflows from the reaction liquid, the smoke moves toward the direction of the smoke guide plate 6, and the smoke gathers at the center of the smoke guide plate 6 under the guidance of the smoke guide plate 6, and then when the smoke moves upward from the smoke guide hole 61, the smoke is located directly below the second nozzle 7. When the smoke moves upward from the smoke guide hole 61, the reaction water in the second nozzle 7 is sprayed toward the smoke, and then the smoke is subjected to secondary deacidification and tertiary dust removal.

[0035] In order to recycle the reaction solution, refer to Figure 1 , a reflux inlet pipe 71 is connected to the second nozzle 7, and the reflux inlet pipe 71 penetrates the side wall of the tower body 1. A reflux pump 72 is connected to the reflux inlet pipe 71, and the reflux pump 72 is installed on the side wall of the tower body 1. A reflux outlet pipe 73 is connected to the input end of the reflux pump 72, and the reflux outlet pipe 73 is connected to the tower body 1. A wire mesh filter plate 8 is installed in the tower body 1, and the wire mesh filter plate 8 is located above the reflux outlet pipe 73, and the wire mesh filter plate 8 is located below the smoke guide pipe 31. The wire mesh filter plate 8 intercepts impurities in the reaction liquid, so that impurities in the reaction liquid are not easy to enter the reflux outlet pipe 73, and then the impurities in the reaction liquid are not easy to block the reflux outlet pipe 73, the reflux pump 72, the reflux inlet pipe 71 and the second nozzle 7. The reflux pump 72 is started, and the reflux pump 72 pumps the reaction liquid to the reflux inlet pipe 71 through the reflux outlet pipe 73, and the reaction liquid in the reflux inlet pipe 71 is sprayed to the smoke guide hole 61 through the second nozzle 7.

[0036] In order to achieve the effect of ring plate treatment of flue gas, refer to Figure 1, an activated carbon filter plate 9 and a defoaming plate 91 are installed in the tower body 1, the defoaming plate 91 is located above the second nozzle 7, and the activated carbon filter plate 9 is located above the defoaming plate 91. In the process of smoke rising, the smoke first passes through the defoaming plate 91 to remove the tiny droplets entrained in the smoke, and then the smoke passes through the activated carbon filter plate 9 to remove the irritating odor in the smoke, and finally the smoke is discharged from the smoke exhaust pipe.

[0037] The implementation principle of a deacidification and dust removal reaction tower in the embodiment of the present application is as follows: before deacidification and dust removal of flue gas, the first nozzle 4 sprays water to the dust reduction box 2, and the reaction liquid is passed into the tower body 1 through the liquid inlet pipe 13, and the reflux pump 72 is started, so that the second nozzle 7 sprays the reaction liquid to the smoke guide hole 61. When the flue gas is passed into the dust reduction box 2 through the smoke inlet pipe 21, the large-particle impurities in the flue gas are first combined with the water sprayed by the first nozzle 4, thereby increasing the weight of the large-particle impurities in the flue gas; then the flue gas is blocked by the smoke baffle 5, and then the flue gas rises and moves through the flow channel 51. During the rising process of the flue gas, the large-particle impurities in the flue gas are settled in the dust reduction box 2. After the flue gas is dusted once in the dust reduction box 2, the flue gas is passed into the smoke guide pipe 31 through the connecting pipe 3, and the flue gas in the smoke guide pipe 31 is passed into the reaction liquid. The flue gas reacts with the reaction liquid in the tower body 1. After the flue gas is passed into the reaction liquid, the impurities in the flue gas are retained in the reaction liquid, while the gas insoluble in the liquid overflows, and then the flue gas undergoes a primary deacidification and secondary dust removal treatment in the reaction liquid. When the flue gas overflows from the reaction liquid, the flue gas rises from the smoke guide hole 61, and the reaction water in the second nozzle 7 is sprayed toward the flue gas, and then the flue gas undergoes a secondary deacidification and tertiary dust removal treatment. After the flue gas completes the deacidification and dust removal treatment, the flue gas first passes through the defoaming plate 91 to remove the tiny droplets entrained in the flue gas, and then the flue gas passes through the activated carbon filter plate 9 to remove the irritating odor in the flue gas, and finally the flue gas is discharged from the smoke outlet pipe 11. By subjecting the flue gas to a tertiary dust removal treatment and a secondary deacidification treatment, the purpose of improving the flue gas deacidification and dust removal effect is achieved.

[0038] 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 deacidification and dust removal reaction tower, comprising a tower body (1), wherein the top of the tower body (1) is connected to a smoke outlet pipe (11), characterized in that: A liquid discharge pipe (12) is arranged in communication with the bottom of the tower body (1), a liquid inlet pipe (13) and a connecting pipe (3) are arranged in communication with one side of the tower body (1), a dust reduction box (2) is arranged in communication with the connecting pipe (3) on the side away from the tower body (1), a first nozzle (4) is arranged in the dust reduction box (2), a smoke inlet pipe (21) is arranged in communication with the dust reduction box (2), a second nozzle (7) is arranged in the tower body (1), and the second nozzle (7) is located above the connecting pipe (3).

2. A deacidification and dust removal reaction tower according to claim 1, characterized in that: A spray water tank (42) is arranged on the top of the dust suppression box (2), a spray water pump (43) is arranged on the spray water tank (42), and a spray water pipe (41) is arranged between the spray water pump (43) and the first spray head (4).

3. A deacidification and dust removal reaction tower according to claim 1, characterized in that: A smoke shield (5) is fixedly arranged in the dust reduction box (2), and the smoke shield (5) is located on the side of the first nozzle (4) away from the smoke inlet pipe (21). The side wall and the bottom wall of the smoke shield (5) are both in contact with the inner wall of the dust reduction box (2), and a flow channel (51) exists between the top wall of the smoke shield (5) and the top wall of the dust reduction box (2).

4. A deacidification and dust removal reaction tower according to claim 1, characterized in that: A smoke guide pipe (31) is arranged in the tower body (1); the top end of the smoke guide pipe (31) is connected to the connecting pipe (3); and the bottom end of the smoke guide pipe (31) is used to be inserted into the reaction liquid.

5. A deacidification and dust removal reaction tower according to claim 4, characterized in that: A smoke guide plate (6) is arranged in the tower body (1), the smoke guide plate (6) is located above the smoke guide pipe (31), a smoke guide hole (61) is provided on the smoke guide plate (6), and the second nozzle (7) is located above the smoke guide hole (61).

6. A deacidification and dust removal reaction tower according to claim 5, characterized in that: A reflux inlet pipe (71) is connected to the second nozzle (7), the reflux inlet pipe (71) passes through the side wall of the tower body (1), a reflux pump (72) is connected to the reflux inlet pipe (71), the reflux pump (72) is fixedly arranged on the side wall of the tower body (1), a reflux outlet pipe (73) is connected to the input end of the reflux pump (72), and the reflux outlet pipe (73) is connected to the tower body (1).

7. A deacidification and dust removal reaction tower according to claim 6, characterized in that: A wire mesh filter plate (8) is arranged in the tower body (1), the wire mesh filter plate (8) is located above the reflux outlet pipe (73), and the wire mesh filter plate (8) is located below the smoke guide pipe (31).

8. A deacidification and dust removal reaction tower according to claim 6, characterized in that: An activated carbon filter plate (9) and a defoaming plate (91) are arranged in the tower body (1); the defoaming plate (91) is located above the second nozzle (7); and the activated carbon filter plate (9) is located above the defoaming plate (91).

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