Waste gas purification system

Abstract

The utility model discloses a waste gas purification system and belongs to the technical field of waste gas purification. Comprising a purification tower, a gas inlet pipeline, a gas outlet pipeline and a liquid discharge pipeline are arranged on the purification tower, a valve is arranged on the liquid discharge pipeline, a spraying system and a demister are arranged in the purification tower, and the spraying system comprises a plurality of spraying heads which are uniformly distributed on the cross section of an inner cavity of the purification tower where the spraying system is located; the demister is arranged in the purification tower above the spray head, the deduster is arranged at the air inlet pipeline, and the first mixer and the second mixer are respectively arranged in the purification tower and are both positioned in the purification tower between the spray head and the air inlet pipeline. According to the waste gas purification system provided by the utility model, the waste gas can be in full, comprehensive and long-term contact with the spraying liquid medicine, so that the waste gas purification effect is further improved, and the waste gas is more thoroughly purified.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of waste gas purification systems, belong to waste gas purification technical field. BACKGROUND

[0002] Waste gas purification refers to the governance work such as dust particle, flue gas smoke, peculiar smell gas, toxic and harmful gas, common waste gas purification has factory flue dust waste gas purification, workshop dust waste gas purification, organic waste gas purification, waste gas peculiar smell purification, acid-base waste gas purification, chemical waste gas purification etc..With the rapid advancement of industrialization and urbanization, the waste gas emission generated by various production activities is increasingly serious, which causes great pressure on atmospheric environment, harmful substances in waste gas not only harm human health, but also cause damage to ecological system, so waste gas treatment becomes an important task in current environmental protection field.In the governance work of environmental protection engineering, waste gas is often purified to remove harmful substances in waste gas.

[0003] Waste gas treatment method mainly includes dry method and wet method, wet method is mainly to let waste gas contact reaction with liquid, current wet method mostly adopts spraying mode, let waste gas contact reaction with spraying liquid to purify waste gas, spray tower is a kind of commonly used waste gas purification equipment, through spraying liquid, pollutants in waste gas are dissolved or absorbed into liquid, so as to achieve the purpose of purifying air, when waste gas passes through spray tower, it will contact with spraying liquid, pollutants are dissolved or adsorbed into liquid, finally realizing purification treatment of waste gas, spray tower has the advantages of simple structure, convenient operation and maintenance and high treatment efficiency, and is widely used in waste gas treatment process in industrial production, and is one of the commonly used waste gas purification equipment, at the same time, spray tower also helps to realize the goal of environmental protection and energy saving to a great extent.

[0004] The purification effect of spray tower is related to whether waste gas is fully and comprehensively contacted with spraying liquid after flowing into spray tower, although various spoiler plates are arranged in the existing spray tower to improve purification effect, but waste gas is not completely and comprehensively contacted with spraying liquid, which can be further improved.In addition, current waste gas enters spray tower and is directly sprayed by spraying liquid, but waste gas often contains some dust, which will affect purification effect by direct spraying. SUMMARY

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a kind of waste gas purification system.

[0006] The utility model discloses a technical scheme adopted is: design a waste gas purification system, including the purification tower, be provided with the air inlet pipeline, the air outlet pipeline and the liquid discharge pipeline on the purification tower, be provided with the valve on the liquid discharge pipeline, be provided with the spray system and the demister in the purification tower, the spray system includes the multiple spray heads of the uniform distribution in the cross section of the spray system in the purification tower inner chamber, the demister sets up in the purification tower above the spray head, it still includes the dust catcher, first mixer and second mixer, the dust catcher sets up at the air inlet pipeline, first mixer and second mixer set up in the purification tower respectively, and all are located in the purification tower between the spray head and the air inlet pipeline,

[0007] Be provided with the intensive elongated airflow channel on the first mixer, be provided with the spiral airflow channel of spiral ascending and a plurality of vertical airflow channels on the second mixer, the vertical airflow channel longitudinal through second mixer;

[0008] The upper and lower sides of the second mixer are provided with the first mixer respectively.

[0009] Further, the first mixer includes a support plate and a purification ball, the support plate is provided with intensive purification holes, the purification holes are distributed on the support plate, each purification hole is provided with a purification ball, the purification ball is provided with the elongated airflow channel, and the elongated airflow channel penetrates the purification ball.

[0010] Further, the inner diameter of the purification hole is smaller than the diameter of the purification ball, and the purification ball is directly clamped in the purification hole or fixed in the purification hole by spot welding.

[0011] Further, the support plate is trumpet-shaped, and the large end port is downwardly arranged, the inclined surface of the support plate is provided with intensive purification holes, and the purification holes are vertically arranged on the inclined surface of the support plate.

[0012] Further, the second mixer includes a support shaft and a spiral blade arranged around the support shaft, the outer diameter of the spiral blade is not less than the inner diameter of the purification tower, and the spiral blade divides the inner cavity of the purification tower into the spiral airflow channel.

[0013] Further, the spiral blade is provided with intensive communication holes, and the communication holes form the vertical airflow channel by penetrating the whole spiral blade.

[0014] Further, the purification ball is arranged on each communication hole of the spiral blade.

[0015] Further, two layers of cross support frames are arranged in the purification tower, and the second mixer is fixed between the two layers of cross support frames.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a first mixer and the second mixer's setting, waste gas is first in the first mixer at its on the intensive slender airflow channel division into a plurality of slender streams, to with the liquid medicine fully contact, and then in the second mixer on the spiral airflow channel of spiral ascending extension its journey, cooperate the liquid medicine of vertical airflow channel's exit, further fully react and contact, and then again through the first mixer further get meticulous overall purification.

[0018] The waste gas purification system can make the waste gas fully, comprehensively and long-term contact with the spraying liquid medicine, and the waste gas purification effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0020] Figure 1 It is the sectional view schematic diagram of the utility model.

[0021] Figure 2 It is the first mixer schematic diagram of the utility model.

[0022] Figure 3 It is the second mixer schematic diagram of the utility model.

[0023] Figure 4 It is the purification ball schematic diagram of the utility model.

[0024] In the drawing: 1, purification tower;2, inlet pipeline;3, outlet pipeline;4, liquid discharge pipeline;5, valve;6, demister;7, spray head;8, dust collector;9, first mixer;10, second mixer;11, slender airflow channel;12, spiral airflow channel;13, vertical airflow channel;14, support plate;15, purification ball;16, support shaft;17, spiral blade;18, cross support frame. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that, unless explicitly specified and limited, if the terms "mounting", "connection" and "connecting" are used, they should be understood in a broad sense, for example, they can be fixed connection, detachable connection or integral connection; they can be mechanical connection or electrical connection; they can be direct connection or indirect connection through an intermediate medium; they can be internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0027] Embodiment 1

[0028] As shown in Figure 1 A waste gas purification system, comprising a purification tower 1, the purification tower 1 is provided with an air inlet pipeline 2, an air outlet pipeline 3 and a liquid discharge pipeline 4, the air inlet pipeline 2 is arranged at the lower part of the purification tower 1, the air outlet pipeline 3 is arranged at the upper end of the purification tower 1, and the liquid discharge pipeline 4 is arranged at the bottom of the purification tower 1. The liquid discharge pipeline 4 is provided with a valve 5, such as an electromagnetic valve; the purification tower 1 is provided with a spraying system and a demister 6 (the demister 6 can also be arranged on the air outlet pipeline 3), the spraying system comprises a plurality of spraying heads 7 uniformly distributed on the cross section of the spraying system in the purification tower 1, that is, the liquid medicine sprayed by the spraying head 7 can cover the cross section of the inner cavity of the purification tower 1, and the demister 6 is arranged above the spraying head 7 in the purification tower 1. The above are all prior art and will not be described in detail. The waste gas purification system provided in the embodiment further comprises a dust remover 8, a first mixer 9 and a second mixer 10, the dust remover 8 is arranged at the air inlet pipeline 2, and a conventional dust remover 8 on the market can be used. The first mixer 9 and the second mixer 10 are arranged in the purification tower 1 respectively, and are both located in the purification tower 1 between the spraying head 7 and the air inlet pipeline 2.

[0029] More specifically, the first mixer 9 is provided with a dense elongated airflow passage 11 (or a circular hole airflow passage), which can be a straight passage, an arc-shaped passage or a zigzag passage. The second mixer 10 is provided with a spiral airflow passage 12 rising spirally and a plurality of vertical airflow passages 13 longitudinally penetrating through the second mixer 10, and the first mixer 9 is arranged on the upper and lower sides of the second mixer 10 respectively.

[0030] When the exhaust gas is purified, the dust collector 8 and the spray system are started, the exhaust gas to be purified is introduced into the dust collector 8 for dust removal, the dust-removed exhaust gas is introduced into the purification tower 1 through the gas inlet pipeline 2, then is subdivided into a plurality of independent gas streams through the elongated gas flow channel 11 on the first mixer 9 below the second mixer 10, while the sprayed liquid (which can be obtained by using the conventional technology in the art, which is not the point of the application and will not be described) flows downward through the elongated gas flow channel 11 on the first mixer 9 below the second mixer 10, the exhaust gas is fully and comprehensively contacted and reacted with the liquid for the first time in the elongated gas flow channel 11, and the substances in the exhaust gas are separated and treated by spraying. Then the exhaust gas climbs along the spiral gas flow channel 12 on the second mixer 10, and part of the exhaust gas climbs along the vertical gas flow channel 13, while the liquid is sprayed downward along the vertical gas flow channel 13, and sequentially passes through the vertical gas flow channel 13 and the spiral gas flow channel 12, at which the exhaust gas is fully and comprehensively contacted and reacted with the liquid for the second time. Finally, the exhaust gas is subdivided into a plurality of independent gas streams again through the elongated gas flow channel 11 on the first mixer 9 above the second mixer 10, and is fully and comprehensively contacted and reacted with the liquid for the third time. The purified exhaust gas continues to go upward through the demister 6 (which can be designed conventionally) to remove water, and is then discharged through the gas outlet pipeline 3.

[0031] Example 2

[0032] This embodiment is a further optimization and refinement of the structure of the first mixer 9 based on Example 1, specifically:

[0033] As shown in Figure 2 , the first mixer 9 comprises a support plate 14 and a purification ball 15, the support plate 14 is provided with a plurality of purification holes, the purification holes are distributed on the support plate 14, each purification hole is provided with a purification ball 15, and the purification ball 15 is provided with the elongated gas flow channel 11, as shown in Figure 4 , the elongated gas flow channel 11 penetrates through the purification ball 15, which divides the exhaust gas, prolongs the travel of the exhaust gas, and increases the contact area between the exhaust gas and the liquid.

[0034] In this embodiment, the inner diameter of the purification hole is smaller than the diameter of the purification ball 15, the purification ball 15 can be directly clamped in the purification hole based on its own gravity, or can be fixed in the purification hole by spot welding, or can be adhered in the purification hole.

[0035] Example 3

[0036] This embodiment is a further optimization and refinement of the structure of the support plate 14 based on Example 2, specifically:

[0037] In order to ensure that the exhaust gas has sufficient flow channel, the support plate 14 is arranged in a trumpet shape, and the large end of the support plate 14 is arranged downward, the slope of the support plate 14 is covered with dense purification holes, and the purification holes are vertically arranged on the slope of the support plate 14. On the one hand, it provides sufficient flow area for the flow of exhaust gas, and on the other hand, it finely divides the exhaust gas, which facilitates to improve the purification efficiency.

[0038] Embodiment 4

[0039] This embodiment is a further optimization and refinement of the structure of the second mixer 10 based on embodiment 3, specifically:

[0040] As shown in Figure 3 , the second mixer 10 includes a support shaft 16 and a spiral blade 17 arranged around the support shaft 16, which is simple in structure and easy to set up, and the outer diameter of the spiral blade 17 is not less than the inner diameter of the purification tower 1, which ensures that the exhaust gas climbs through the spiral airflow channel 12 and the vertical airflow channel 13. Of course, the outer diameter of the spiral blade 17 can also be smaller than the inner diameter of the purification tower 1, at which time only a sealing structure such as a sealing coating needs to be arranged between the outer side of the spiral blade 17 and the inner wall of the purification tower 1. The spiral blade 17 separates the inner cavity of the purification tower 1 where it is located into the spiral airflow channel 12.

[0041] More specifically, in this embodiment, the spiral blade 17 is arranged with dense communication holes, and the communication holes form vertical airflow channels 13 through the entire spiral blade 17. In order to make the exhaust gas climb along the spiral airflow channel 12 as much as possible, the communication holes can be designed with a small diameter. Through the arrangement of the vertical airflow channel 13, the exhaust gas is in contact with the liquid medicine at all times during the climbing process along the spiral airflow channel 12.

[0042] More specifically, in this embodiment, the purification ball 15 (not shown in the figure) can also be configured on each communication hole of the spiral blade 17, especially for exhaust gas with more serious pollution, to further improve the purification effect.

[0043] Embodiment 5

[0044] This embodiment is a further optimization and refinement of the support structure of the second mixer 10 based on embodiment 4, specifically:

[0045] Two layers of cross-shaped support frames 18 are arranged in the purification tower 1, and the second mixer 10 is fixed between the two layers of cross-shaped support frames 18, which is stable and reliable in support and simple to set up. It should be noted that the first mixer 9 can be a support ring plate arranged on the inner wall of the purification tower 1, which is directly placed on the support ring plate, or it can be directly welded on the inner wall of the purification tower 1, or it can be installed by bolt locking.

[0046] Further, in the description of the present application, unless otherwise specified, if the terms "a plurality of", "a plurality of", "a plurality of" are used, the meaning of two or more than two, "a plurality of", "a plurality of", "a plurality of" is one or more than one. In the description of the present application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "internal", "external" and other indicated orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, structure and operation, therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0047] The specific embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. An exhaust gas purification system comprising a purification tower, wherein the purification tower is provided with an air inlet pipe, an air outlet pipe, and a liquid discharge pipe, wherein the liquid discharge pipe is provided with a valve, wherein a spray system and a demister are provided in the purification tower, wherein the spray system comprises a plurality of spray heads uniformly distributed in the cross section of the purification tower cavity where the spray system is located, and wherein the demister is provided in the purification tower above the spray heads, characterized in that: It also includes a dust collector, a first mixer and a second mixer, wherein the dust collector is arranged at the air inlet duct, and the first mixer and the second mixer are respectively arranged in the purification tower, and both are located in the purification tower between the spray head and the air inlet duct; The first mixer is provided with dense and elongated air flow channels, and the second mixer is provided with a spiral air flow channel that rises in a spiral and a plurality of vertical air flow channels, wherein the vertical air flow channels longitudinally penetrate the second mixer; The first mixer is respectively arranged on the upper and lower sides of the second mixer.

2. The exhaust gas purification system according to claim 1, characterized in that: The first mixer includes a support plate and a purification ball. The support plate is provided with dense purification holes, and the purification holes are distributed throughout the support plate. Each purification hole is equipped with a purification ball, and the purification ball is covered with the elongated airflow channel, and the elongated airflow channel runs through the purification ball.

3. The exhaust gas purification system according to claim 2, characterized in that: The inner diameter of the purification hole is smaller than the diameter of the purification ball. The purification ball is directly stuck in the purification hole or fixed in the purification hole by spot welding.

4. The exhaust gas purification system according to claim 3, characterized in that: The support plate is trumpet-shaped, with a large end facing downwards. The inclined surface of the support plate is covered with dense purification holes, and the purification holes are opened perpendicular to the inclined surface of the support plate.

5. The exhaust gas purification system according to claim 4, characterized in that: The second mixer includes a support shaft and a spiral blade arranged around the support shaft. The outer diameter of the spiral blade is not less than the inner diameter of the purification tower. The spiral blade divides the inner cavity of the purification tower where it is located into the spiral airflow channel.

6. The exhaust gas purification system according to claim 5, characterized in that: The spiral blade is densely arranged with communicating holes, and the communicating holes penetrate the entire spiral blade to form a vertical air flow channel.

7. The exhaust gas purification system according to claim 6, characterized in that: The purification ball is arranged on each communicating hole of the spiral blade.

8. The exhaust gas purification system according to claim 7, characterized in that: Two layers of cross support frames are provided in the purification tower, and the second mixer is fixed between the two layers of cross support frames.

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