Tail gas treatment device

Abstract

The utility model relates to a tail gas treatment device and belongs to the technical field of tail gas purification. The tail gas treatment device comprises a purification assembly and a washing assembly, wherein the purification assembly is provided with a purification cavity, the activated tail gas can enter the purification cavity, the washing assembly is communicated with the purification assembly, and a solvent in the washing assembly can enter the purification cavity to be in contact with the activated tail gas so as to adsorb and purify the activated tail gas. The tail gas treatment device provided by the utility model is used for treating chromium catalyst activation tail gas.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas purification technology, and in particular to an exhaust gas treatment device. Background Technology

[0002] The activation process of chromium-based catalysts in polyethylene plants inevitably generates activation tail gas. The main component of the activation tail gas is nitrogen. To prevent the activation tail gas containing chromium-based catalyst dust from being directly emitted into the atmosphere, it is usually necessary to treat the activation tail gas before it is released.

[0003] However, in existing technologies, exhaust gas is usually treated by filters and other components. Due to filter precision or other operational reasons, the treatment efficiency of exhaust gas activated by chromium catalysts is low. Trace amounts of chromium catalysts may be mixed in the exhaust gas, and rust in the pipeline may sometimes be carried out by the emissions, which can easily cause environmental pollution. Utility Model Content

[0004] This invention provides an exhaust gas treatment device that can improve the treatment efficiency of exhaust gas activated by chromium-based catalysts and reduce environmental pollution.

[0005] The exhaust gas treatment device provided in this application includes a purification component and a water washing component; wherein, the purification component has a purification chamber, into which activated exhaust gas can enter, and the water washing component is connected to the purification component, and the solvent in the water washing component can enter the purification chamber and contact the activated exhaust gas to adsorb and purify the activated exhaust gas.

[0006] The exhaust gas treatment device provided in this application includes a purification component that provides a purification chamber for the exhaust gas, where the activated exhaust gas is adsorbed and purified. Additionally, a water washing component adsorbs toxic substances from the activated exhaust gas, thereby purifying the exhaust gas, reducing the probability of environmental pollution, and minimizing harm to human health.

[0007] In one possible implementation of this application, the purification component includes a housing with a purification chamber and an air inlet at the bottom of the housing, through which untreated activated exhaust gas enters the housing; and an air outlet at the top of the housing, through which treated activated exhaust gas is discharged from the housing.

[0008] In one possible implementation of this application, the water washing assembly includes a circulation pump, one end of which is connected to the bottom of the housing via a first water pipe, and the other end of which is connected to the top of the housing via a second water pipe; it also includes a water replenishment tank, which is connected to the first water pipe via a third water pipe, and the water replenishment tank replenishes the circulation pump with solvent, and the circulation pump delivers the solvent to the purification chamber.

[0009] In one possible implementation of this application, multiple support plates are installed inside the housing, arranged sequentially along the vertical direction; each support plate includes a direct flow section and a slow flow section, the direct flow section is connected to the slow flow section, the direct flow section is provided with a through hole, and the slow flow section is provided with a spiral groove, the solvent at the top of the housing passes through the through hole and the spiral groove in sequence.

[0010] In one possible implementation of this application, a level control valve is installed in the third water pipe, and a level monitoring device is installed at the bottom of the housing. The level control valve is electrically connected to the level monitoring device.

[0011] In one possible implementation of this application, the air outlet is connected to an air outlet pipe, and the air outlet pipe is connected to an exhaust fan.

[0012] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0013] (1) This application is equipped with a shell, a circulating pump, a first water pipe and a second water pipe. The activated exhaust gas in the shell is washed in reverse by water, and the toxic and harmful chromium-based catalyst dust particles entrained in the activated exhaust gas are recovered, thereby improving the purification efficiency, reducing the pollution to the environment and reducing the health risks to personnel.

[0014] (2) This application is provided with a direct flow section, a through hole, a slow flow section and a spiral groove, which can reduce the flow rate of water in the shell, increase the contact time between water and activated exhaust gas, and further improve the recycling efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an exhaust gas treatment device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the support plate structure;

[0018] Figure 3 This is a schematic diagram of the DC section structure;

[0019] Figure 4 This is a schematic diagram of the flow-retarding section structure;

[0020] Figure 5 This is a schematic diagram of a spiral groove structure.

[0021] Icons: 1-Purification component; 11-Housing; 12-Air inlet; 13-Air outlet; 2-Water washing component; 21-Circulation pump; 22-First water pipe; 23-Second water pipe; 24-Water replenishment tank; 25-Third water pipe; 3-Support plate; 31-Direct flow section; 311-Through hole; 32-Slow flow section; 321-Spiral groove; 4-Liquid level control valve; 5-Liquid level monitoring component; 6-Wire; 7-Air outlet pipe; 8-Exhaust fan. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] This application provides an exhaust gas treatment device, such as... Figure 1 As shown, the exhaust gas treatment device includes: a purification component 1 and a water washing component 2; wherein, the purification component 1 has a purification chamber, into which the activated exhaust gas can enter; the water washing component 2 is connected to the purification component 1, and the solvent in the water washing component 2 can enter the purification chamber and contact the activated exhaust gas to adsorb and purify the activated exhaust gas.

[0028] In some embodiments of this application, the purification component 1 includes a housing 11, the housing 11 having a purification chamber, an air inlet 12 provided at the bottom of the housing 11, through which untreated activated exhaust gas enters the housing 11; and an air outlet 13 provided at the top of the housing 11, through which treated activated exhaust gas is discharged from the housing 11.

[0029] In this embodiment, the purification component 1 can be configured to include a housing 11, which has a purification chamber. An air inlet 12 can be provided at the bottom of the housing 11, through which the activated exhaust gas to be treated enters the housing 11; an air outlet 13 can also be provided at the top of the housing 11, through which the activated exhaust gas treated inside the housing 11 is discharged.

[0030] For example, the purification component 1 may include a housing 11, which has a purification chamber inside, i.e., the housing 11 is a hollow structure, and the housing 11 is provided with a structure that can install other components, such as a mounting groove or mounting hole.

[0031] In the above embodiments, the housing 11 provides an operating space for purifying exhaust gas, facilitating operation.

[0032] In some embodiments of this application, such as Figure 1 As shown, the water washing assembly 2 includes a circulation pump 21, one end of which is connected to the bottom of the housing 11 via a first water pipe 22, and the other end of which is connected to the top of the housing 11 via a second water pipe 23; it also includes a water replenishment tank 24, which is connected to the first water pipe 22 via a third water pipe 25. The water replenishment tank 24 replenishes the solvent to the circulation pump 21, and the circulation pump 21 delivers the solvent to the purification chamber.

[0033] For example, the water washing assembly 2 can be configured to include a circulation pump 21. A first water pipe 22 is provided between one end of the circulation pump 21 and the housing 11. One end of the first water pipe 22 is connected to the bottom of the housing 11, and the other end of the first water pipe 22 is connected to one end of the circulation pump 21. A second water pipe 23 is provided between the other end of the circulation pump 21 and the housing 11. One end of the second water pipe 23 is connected to the other end of the circulation pump 21, and the other end of the second water pipe 23 is connected to the top of the housing 11.

[0034] The outlet of the second water pipe 23 can be equipped with a nozzle, that is, a nozzle can be installed at one end of the second water pipe 23 located inside the housing 11, through which the water in the second water pipe 23 is sprayed out. This arrangement prevents the water from flowing directly out of the housing 11, prolonging the water's residence time inside the housing 11, thereby increasing the contact time between the water and the activated exhaust gas and improving the absorption efficiency of the activated exhaust gas.

[0035] In another example, the water washing assembly 2 also includes a water replenishment tank 24, and a third water pipe 25 is provided between the water replenishment tank 24 and the circulation pump 21. The other end of the third water pipe 25 can be connected to the first water pipe 22.

[0036] In the above embodiments, a circulation pump 21, a water tank 24, a first water pipe 22, a second water pipe 23, and a third water pipe 25 are provided. The circulation pump 21 delivers water or other solvents into the housing 11. The activation exhaust gas is then reverse-washed from top to bottom inside the housing 11 to recover the toxic chromium-based catalyst dust particles entrained in the activation exhaust gas. This process is repeated continuously.

[0037] In some embodiments of this application, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, multiple support plates 3 are installed inside the housing 11, and the multiple support plates 3 are arranged sequentially in the vertical direction. The support plate 3 includes a direct flow section 31 and a slow flow section 32. The direct flow section 31 is connected to the slow flow section 32. The direct flow section 31 is provided with a through hole 311, and the slow flow section 32 is provided with a spiral groove 321. The solvent at the top of the housing 11 passes through the through hole 311 and the spiral groove 321 in sequence.

[0038] For example, multiple support plates 3 can be installed inside the housing 11, and the multiple support plates 3 can be arranged at equal intervals along the vertical direction.

[0039] In another example, the support plate 3 can be configured to include a direct flow section 31 and a slow flow section 32. The direct flow section 31 can be connected to the slow flow section 32. The direct flow section 31 is located above the slow flow section 32. The direct flow section 31 is provided with a through hole 311, through which water and gas can pass. The slow flow section 32 can be provided with a spiral groove 321, through which water flowing down from the through hole 311 flows out.

[0040] In the above embodiments, the support plate 3 and the through hole 311 allow liquid and gas to pass through; the spiral groove 321 extends the liquid passage time, thereby increasing the contact time between the liquid and gas, thus fully absorbing harmful substances in the activated exhaust gas and improving purification efficiency.

[0041] In some embodiments of this application, such as Figure 1 As shown, a level control valve 4 is installed on the third water pipe 25, and a level monitoring device 5 is installed at the bottom of the housing 11. The level control valve 4 is electrically connected to the level monitoring device 5.

[0042] In this embodiment, a liquid level control valve 4 can be installed on the third water pipe 25, and a liquid level monitoring device 5 can be installed at the bottom of the housing 11. The liquid level monitoring device 5 is electrically connected to the liquid level control valve 4. The liquid level monitoring device 5 monitors the water level at the bottom of the housing 11, and the liquid level control valve 4 controls the opening and closing of the third water pipe 25.

[0043] For example, the level control valve 4 can be electrically connected to the level monitoring device 5 via a wire 6, and the level monitoring device 5 can control the opening and closing of the level control valve 4.

[0044] As another example, a water inlet can be provided on the top of the water replenishment tank 24, through which liquid can be replenished to the water replenishment tank 24 in a timely manner. The water replenishment tank 24 is also equipped with a water supply line to facilitate the addition of liquid by staff.

[0045] In another example, the vent 13 on the housing 11 can be connected to an vent pipe 7, and an exhaust fan 8 can be installed at one end of the vent pipe 7.

[0046] In the above embodiments, a liquid level control valve 4 is provided, which can control the opening and closing of the third water pipe 25 so that liquid can be added to the circulating pump 21 in a timely manner through the water replenishment tank 24, reducing the probability of equipment damage due to water shortage; a liquid level monitoring device 5 is provided, which can monitor the liquid level inside the housing 11, making it convenient to observe the working condition in a timely manner; and an exhaust fan 8 is provided, which can conveniently discharge the gas purified at the top of the housing 11.

[0047] The following describes the usage process of the exhaust gas treatment device provided in this application. During use:

[0048] S100: First, the chromium-based catalyst activation exhaust gas to be treated is introduced into the housing 11 through the air inlet 12. The activation exhaust gas moves vertically upwards within the housing 11. Water is introduced into the housing 11 through the second water pipe 23 via the circulation pump 21. The water is sprayed out from the top of the housing 11 and moves downwards, passing through the through hole 311 and the spiral groove 321 in sequence. Through the contact between the water and the activation exhaust gas, the activation exhaust gas is reverse-washed, and toxic and harmful chromium-based catalyst dust particles entrained in the activation exhaust gas are recovered. Then, the water in the housing 11 enters the circulation pump 21 through the first water pipe 22, and then enters the housing 11 through the second water pipe 23. This cycle repeats, recovering and purifying the activation exhaust gas in the housing 11.

[0049] S200: Depending on the actual situation, the liquid that absorbs toxic substances is discharged to a designated location, and then clean water is supplied to the circulating pump 21 through the third water pipe 25. This process is repeated to absorb and purify the activated exhaust gas inside the casing 11. The purified gas is discharged through the exhaust pipe 7 and the exhaust fan 8.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device, characterized in that, include: Purification component (1), wherein the purification component (1) has a purification chamber, and the activated exhaust gas can enter the purification chamber; The water washing component (2) is connected to the purification component (1). The solvent in the water washing component (2) can enter the purification chamber and come into contact with the activated exhaust gas to adsorb and purify the activated exhaust gas.

2. The exhaust gas treatment device according to claim 1, characterized in that, The purification component (1) includes a housing (11) having a purification chamber. An air inlet (12) is provided at the bottom of the housing (11), through which untreated activated exhaust gas enters the housing (11). An air outlet (13) is provided at the top of the housing (11), through which treated activated exhaust gas is discharged from the housing (11).

3. The exhaust gas treatment device according to claim 2, characterized in that, The water washing assembly (2) includes a circulation pump (21), one end of which is connected to the bottom of the housing (11) via a first water pipe (22), and the other end of which is connected to the top of the housing (11) via a second water pipe (23); it also includes a water replenishment tank (24), which is connected to the first water pipe (22) via a third water pipe (25). The water replenishment tank (24) replenishes the solvent to the circulation pump (21), and the circulation pump (21) delivers the solvent into the purification chamber.

4. The exhaust gas treatment device according to claim 2, characterized in that, Multiple support plates (3) are installed inside the housing (11), and the multiple support plates (3) are arranged sequentially in the vertical direction; the support plate (3) includes a direct flow section (31) and a slow flow section (32), the direct flow section (31) is connected to the slow flow section (32), the direct flow section (31) is provided with a through hole (311), and the slow flow section (32) is provided with a spiral groove (321), and the solvent at the top of the housing (11) passes through the through hole (311) and the spiral groove (321) in sequence.

5. The exhaust gas treatment device according to claim 3, characterized in that, The third water pipe (25) is equipped with a liquid level control valve (4), and a liquid level monitoring device (5) is installed at the bottom of the housing (11). The liquid level control valve (4) is electrically connected to the liquid level monitoring device (5).

6. The exhaust gas treatment device according to claim 2, characterized in that, The air outlet (13) is connected to an air outlet pipe (7), and the air outlet pipe (7) is connected to an exhaust fan (8).

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