Tail gas treatment device

Abstract

The utility model provides a tail gas treatment device which comprises a gas inlet pipeline, the lower end of the gas inlet pipeline is fixedly connected with a first-stage tail absorption tower assembly, one side of the gas inlet pipeline is provided with an overflow pipe fixedly connected above the first-stage tail absorption tower assembly, and one end of the overflow pipe is fixedly connected with a conveying pipe. Compared with the prior art, the tail gas treatment device has the following beneficial effects that the gas inlet pipeline, the first-stage tail absorption tower assembly and the second-stage tail absorption tower assembly are connected to form a secondary circulating flow process, and tail gas sent by the gas inlet pipeline enters the first-stage tail absorption tower assembly and then enters the second-stage tail absorption tower assembly; washing liquid sprayed by a circulating pump in the first-stage tail absorption tower assembly is in reverse contact in the countercurrent spray pipe, and gas and liquid collide at a high speed in the countercurrent spray pipe to form a foam area; and gas-liquid contact is realized along with formation and rupture of the foam, so that primary absorption of sulfur dioxide components in the tail gas, primary absorption of sulfuric acid mist and expansion of sulfuric acid mist particles are completed.

Description

Technical Field

[0001] The utility model relates to an exhaust gas treatment device, belonging to the field of exhaust gas treatment equipment. Background Art

[0002] Automobile exhaust gas refers to the waste gas discharged from the exhaust pipe of an automobile. Automobile exhaust gas is another major factor in air pollution. Automobile exhaust gas contains carbon monoxide, nitrogen oxide, and some other solid particles that have an adverse effect on the human body. Through a treatment device, the generated exhaust gas can be absorbed and purified.

[0003] In the prior art, when the exhaust gas treatment device is absorbing and processing exhaust gas, a single absorption and purification is carried out inside. Due to the single absorption treatment of the sulfuric acid mist contained in the exhaust gas, the purification of the sulfuric acid exhaust gas is not deep enough. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an exhaust gas treatment device to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model is realized through the following technical solutions: An exhaust gas treatment device includes an intake pipe. The lower end of the intake pipe is fixedly connected with a first-stage tail gas absorption tower assembly. One side of the intake pipe is provided with an overflow pipe fixedly connected above the first-stage tail gas absorption tower assembly. One end of the overflow pipe is fixedly connected with a delivery pipe. One end of the delivery pipe is fixedly connected with a second-stage tail gas absorption tower assembly. The left side of the first-stage tail gas absorption tower assembly is fixedly connected with a countercurrent spray pipe.

[0006] Below the countercurrent spray pipe is provided with a first discharge pipe fixedly connected to the left side of the first-stage tail gas absorption tower assembly. One end of the first discharge pipe is fixedly connected with a second discharge pipe. The right side of the first-stage tail gas absorption tower assembly is fixedly connected with a circulation pipe. The outer wall of the circulation pipe is provided with a switch valve. The right side of the first-stage tail gas absorption tower assembly is provided with an extended pipe. The upper end of the second-stage tail gas absorption tower assembly is fixedly connected with a chimney pipe.

[0007] Preferably, the first-stage tail gas absorption tower assembly conveys the internally overflowed exhaust gas to the inside of the second-stage tail gas absorption tower assembly through the overflow pipe and the delivery pipe.

[0008] Preferably, the lower end of the first-stage tail gas absorption tower assembly is fixedly connected with a support assembly. The support assembly includes a circular storage plate, and the outer wall of the circular storage plate is fixedly connected with a floor support.

[0009] Preferably, the floor support is connected to the circular storage plate by welding, and the floor supports are respectively arranged around the outer wall of the circular storage plate.

[0010] Preferably, the primary tail gas absorption tower assembly includes a first tank body, a first through pipe is fixedly connected to the right side of the first tank body, a first circulation pump is fixedly connected to the lower end of the first through pipe, and a first support is fixedly connected below the first circulation pump.

[0011] Preferably, the first tank body performs secondary circulation on the internal tail gas through the first through pipe and the first circulation pump, and the first circulation pump and the first support are connected by welding.

[0012] Preferably, the secondary tail gas absorption tower assembly includes a second tank body, an installation valve is arranged on the left side of the second tank body, a second through pipe is fixedly connected to the right side of the second tank body, a second circulation pump is fixedly connected to the lower end of the second through pipe, a second support is fixedly connected below the second circulation pump, and a tail gas absorption electric fog chamber is arranged above the second tank body.

[0013] Preferably, the second tank body performs secondary circulation on the internal tail gas through the second through pipe and the second circulation pump, and the central axes of the second tank body and the tail gas absorption electric fog chamber coincide.

[0014] Advantages of the present utility model:

[0015] Compared with the prior art, the tail gas treatment device is connected through an intake pipe, a primary tail gas absorption tower assembly and a secondary tail gas absorption tower assembly to form a process of secondary circulation processing. The tail gas sent through the intake pipe enters the primary tail gas absorption tower assembly, and the washing liquid sprayed by the internal circulation pump of the primary tail gas absorption tower assembly makes reverse contact in the countercurrent spray pipe. In the countercurrent spray pipe, the gas and liquid collide at high speed and form a foam area. With the formation and rupture of the foam, the gas-liquid contact is realized, and thus the preliminary absorption of sulfur dioxide components in the tail gas, the preliminary absorption of sulfuric acid mist and the growth of sulfuric acid mist particles are completed. The tail gas overflowing from the primary tail gas absorption tower assembly enters the secondary tail gas absorption tower assembly with a hollow tower structure through a delivery pipe for secondary absorption. When the gas passes through the tower body from bottom to top, it makes reverse contact with the liquid sprayed downward to complete the secondary absorption of the tail gas. The tail gas overflowing from the secondary tail gas absorption tower enters the internal part of the tail gas absorption electric demisting chamber to remove the sulfuric acid mist in the tail gas, and the deep purification of the sulfuric acid tail gas is completed.

[0016] Compared with the prior art, the tail gas treatment device is placed and connected at the bottom through a support assembly. When the device is operated and used, it is connected through the primary tail gas absorption tower assembly and the secondary tail gas absorption tower assembly, and is wrapped by an external circular bin plate. At the same time, the formed anchor supports are used for stable support around, which is beneficial to the stable placement and fixation at the bottom. Description of the drawings

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0018] Figure 1 This is the front view schematic diagram of an exhaust gas treatment device of the present utility model;

[0019] Figure 2 This is the schematic diagram of the primary tail suction tower assembly in an exhaust gas treatment device of the present utility model;

[0020] Figure 3 This is the schematic diagram of the secondary tail suction tower assembly in an exhaust gas treatment device of the present utility model;

[0021] Figure 4 This is the schematic diagram of the support assembly in an exhaust gas treatment device of the present utility model;

[0022] In the figure: 1, intake pipe; 2, primary tail suction tower assembly; 201, first tank body; 202, first through pipe; 203, first circulation pump; 204, first support; 3, overflow pipe; 4, delivery pipe; 5, secondary tail suction tower assembly; 501, second tank body; 502, installation valve; 503, second through pipe; 504, second circulation pump; 505, second support; 506, tail suction electrostatic fog chamber; 6, countercurrent spray pipe; 7, first discharge pipe; 8, support assembly; 801, circular bin plate; 802, anchor support; 9, second discharge pipe; 10, circulation pipeline; 11, switch valve; 12, extended pipe; 13, chimney pipe. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Embodiment 1

[0025] As shown in the attached Figures 1 to 4 An exhaust gas treatment device as shown, including an intake pipe 1, characterized in that: the lower end of the intake pipe 1 is fixedly connected to a primary tail suction tower assembly 2, an overflow pipe 3 is arranged on one side of the intake pipe 1 and is fixedly connected above the primary tail suction tower assembly 2, one end of the overflow pipe 3 is fixedly connected to a delivery pipe 4, one end of the delivery pipe 4 is fixedly connected to a secondary tail suction tower assembly 5, and a countercurrent spray pipe 6 is fixedly connected to the left side of the primary tail suction tower assembly 2;

[0026] A first discharge pipe 7 is arranged below the countercurrent spray pipe 6 and is fixedly connected to the left side of the primary tail suction tower assembly 2, one end of the first discharge pipe 7 is fixedly connected to a second discharge pipe 9, a circulation pipeline 10 is fixedly connected to the right side of the primary tail suction tower assembly 2, a switch valve 11 is arranged on the outer wall of the circulation pipeline 10, an extended pipe 12 is arranged on the right side of the primary tail suction tower assembly 2, a chimney pipe 13 is fixedly connected to the upper end of the secondary tail suction tower assembly 5, and the primary tail suction tower assembly 2 conveys the overflowed exhaust gas inside to the inside of the secondary tail suction tower assembly 5 through the overflow pipe 3 and the delivery pipe 4.

[0027] Among them: When operating the fog treatment device, the first-stage tail gas absorption tower assembly 2 and the second-stage tail gas absorption tower assembly 5 can be placed, and the pipelines can be connected, installed and fixed. During operation, the tail gas is received through the intake pipeline 1 above, and enters the interior of the first-stage tail gas absorption tower assembly 2. It is transported by the connected first circulation pump 203, and the countercurrent spray pipe 6 inside sprays the liquid at high speed, generating collisions and forming a foam area. With the formation and rupture of the foam, gas-liquid contact is achieved, thereby completing the preliminary absorption of sulfur dioxide components in the tail gas, the preliminary absorption of sulfuric acid mist and the growth of sulfuric acid mist particles. At the same time, the overflowing tail gas inside enters the interior of the second-stage tail gas absorption tower assembly 5 through the overflow pipe 3 and the conveying pipe 4 for secondary absorption. When the gas passes through the second tank body 501 from bottom to top, it contacts the downwardly sprayed liquid in a countercurrent manner to complete the secondary absorption of the tail gas. The tail gas exiting the second-stage tail gas absorption tower assembly 5 enters the tail gas absorption electric fog bin 506 to remove the sulfuric acid mist in the tail gas, completing the deep purification of the sulfuric acid tail gas. At the same time, the prepared alkali liquid inside is generally first added to the circulation tank of the second-stage tail gas absorption tower assembly 5, so that the secondary absorption equipment maintains the maximum absorption driving force and thus plays a role in secondary absorption of the gas exiting the first-stage tail gas absorption tower assembly 2. The absorption liquid of the secondary absorption equipment is connected in series to the primary absorption equipment, and finally the washing liquid is discharged outside the equipment through the first discharge pipe 7 connected to the first-stage tail gas absorption tower assembly 2, and then sent to the sewage collection tank in the purification section.

[0028] Embodiment 2

[0029] Based on Embodiment 1, the solution in Embodiment 1 is further elaborated in combination with the following specific working methods, as Figures 1 to 4 shown, and the details are described below:

[0030] As a preferred implementation manner, the lower end of the first-stage tail gas absorption tower assembly 2 is fixedly connected with a support assembly 8. The support assembly 8 includes a circular bin plate 801. The outer wall of the circular bin plate 801 is fixedly connected with a floor support 802. The floor support 802 is connected to the circular bin plate 801 by welding, and the floor supports 802 are respectively arranged around the outer wall of the circular bin plate 801;

[0031] Furthermore, when operating and using the equipment, the lower support assembly 8 can place it at the bottom, and the floor supports 802 formed around provide uniform support for placement, making it more stable.

[0032] As a preferred embodiment, the primary tail gas absorption tower assembly 2 includes a first tank body 201. A first through pipe 202 is fixedly connected to the right side of the first tank body 201. A first circulation pump 203 is fixedly connected to the lower end of the first through pipe 202. A first support 204 is fixedly connected below the first circulation pump 203. The first tank body 201 recirculates the internal tail gas through the first through pipe 202 and the first circulation pump 203. The first circulation pump 203 and the first support 204 are connected by welding.

[0033] Further, when the equipment is in operation, through the processing inside the first tank body 201, the connected first circulation pump 203 can transport the liquid through the first circulation pump 203 and the first through pipe 202, so that it enters the inside of the countercurrent spray pipe 6 for spray reaction.

[0034] As a preferred embodiment, the secondary tail gas absorption tower assembly 5 includes a second tank body 501. An installation valve 502 is arranged on the left side of the second tank body 501. A second through pipe 503 is fixedly connected to the right side of the second tank body 501. A second circulation pump 504 is fixedly connected to the lower end of the second through pipe 503. A second support 505 is fixedly connected below the second circulation pump 504. A tail gas absorption electric fog chamber 506 is arranged above the second tank body 501. The second tank body 501 recirculates the internal tail gas through the second through pipe 503 and the second circulation pump 504. The central axes of the second tank body 501 and the tail gas absorption electric fog chamber 506 coincide.

[0035] Further, when the equipment is in operation, the overflowing tail gas is processed inside the secondary tail gas absorption tower assembly 5. At the same time, the connected second circulation pump 504 sprays through the second through pipe 503 to treat the received tail gas, and then cooperates with the tail gas absorption electric fog chamber 506 to remove the sulfuric acid mist in the tail gas, completing the purification of the sulfuric acid tail gas.

[0036] The working principle of the present utility model is as follows:

[0037] First, when operating the fog treatment device, the primary tail gas absorption tower assembly 2 and the secondary tail gas absorption tower assembly 5 can be placed, and the pipelines can be connected, installed, and fixed. During operation, the tail gas is received through the intake pipeline 1 above and enters the interior of the primary tail gas absorption tower assembly 2. It is transported by the connected first circulation pump 203, and the countercurrent spray nozzles 6 inside spray the liquid at high speed, generating collisions and forming a foam area. With the formation and rupture of the foam, gas-liquid contact is achieved, thereby preliminarily absorbing the sulfur dioxide component in the tail gas, preliminarily absorbing the sulfuric acid mist, and growing the sulfuric acid mist particles. At the same time, the overflowing tail gas inside enters the interior of the secondary tail gas absorption tower assembly 5 through the overflow pipe 3 and the delivery pipe 4 for secondary absorption. When the gas passes through the second tank body 501 from bottom to top, it makes countercurrent contact with the liquid sprayed downward to complete the secondary absorption of the tail gas. The tail gas exiting the secondary tail gas absorption tower assembly 5 enters the tail gas absorption electro-mist chamber 506 to remove the sulfuric acid mist in the tail gas, completing the deep purification of the sulfuric acid tail gas;

[0038] Meanwhile, the prepared alkali liquor inside is generally first added to the circulation tank of the secondary tail gas absorption tower assembly 5, so as to enable the secondary absorption device to maintain the maximum absorption driving force and thus play a role in secondary absorbing the gas exiting the primary tail gas absorption tower assembly 2. The absorption liquid of the secondary absorption device flows into the primary absorption device, and finally the washing liquid is discharged outside the device through the first discharge pipe 7 connected to the primary tail gas absorption tower assembly 2, and then sent to the sewage collection tank in the purification section.

[0039] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An exhaust gas treatment device, comprising an intake pipe (1), characterized in that: The lower end of the intake pipe (1) is fixedly connected to a primary tail gas absorption tower assembly (2). An overflow pipe (3) is arranged on one side of the intake pipe (1) and is fixedly connected above the primary tail gas absorption tower assembly (2). One end of the overflow pipe (3) is fixedly connected to a delivery pipe (4). One end of the delivery pipe (4) is fixedly connected to a secondary tail gas absorption tower assembly (5). A countercurrent spray pipe (6) is fixedly connected to the left side of the primary tail gas absorption tower assembly (2). Below the countercurrent spray pipe (6), a first discharge pipe (7) is fixedly connected to the left side of the primary tail gas absorption tower assembly (2). One end of the first discharge pipe (7) is fixedly connected to a second discharge pipe (9). A circulation pipe (10) is fixedly connected to the right side of the primary tail gas absorption tower assembly (2). A switch valve (11) is arranged on the outer wall of the circulation pipe (10). An extended pipe (12) is arranged on the right side of the primary tail gas absorption tower assembly (2). A chimney pipe (13) is fixedly connected to the upper end of the secondary tail gas absorption tower assembly (5).

2. An exhaust gas treatment device according to claim 1, characterized in that: The primary tail gas absorption tower assembly (2) conveys the tail gas overflowing inside to the inside of the secondary tail gas absorption tower assembly (5) through the overflow pipe (3) and the delivery pipe (4).

3. An exhaust gas treatment device according to claim 1, characterized in that: The lower end of the primary tail gas absorption tower assembly (2) is fixedly connected to a support assembly (8). The support assembly (8) includes a circular bin plate (801). An anchor support (802) is fixedly connected to the outer wall of the circular bin plate (801).

4. An exhaust gas treatment device according to claim 3, characterized in that: The anchor support (802) is connected to the circular bin plate (801) by welding. The anchor supports (802) are respectively arranged around the outer wall of the circular bin plate (801).

5. The tail gas treatment device according to claim 1, characterized in that: The primary tail gas absorption tower assembly (2) includes a first tank body (201). A first through pipe (202) is fixedly connected to the right side of the first tank body (201). The lower end of the first through pipe (202) is fixedly connected to a first circulation pump (203). A first support (204) is fixedly connected below the first circulation pump (203).

6. The exhaust gas treatment device according to claim 5, wherein: The first tank body (201) performs secondary circulation of the internal tail gas through the first through pipe (202) and the first circulation pump (203). The first circulation pump (203) and the first support (204) are connected by welding.

7. An exhaust gas treatment device according to claim 1, characterized in that: The secondary tail gas absorption tower assembly (5) includes a second tank body (501). An installation valve (502) is arranged on the left side of the second tank body (501). A second through pipe (503) is fixedly connected to the right side of the second tank body (501). The lower end of the second through pipe (503) is fixedly connected to a second circulation pump (504). A second support (505) is fixedly connected below the second circulation pump (504). A tail gas absorption electric fog bin (506) is arranged above the second tank body (501).

8. An exhaust gas treatment device according to claim 7, characterized in that: The second tank body (501) performs secondary circulation of the internal tail gas through the second through pipe (503) and the second circulation pump (504). The central axes of the second tank body (501) and the tail gas absorption electric fog bin (506) coincide with each other.

Images