Ammonia trap device

Abstract

The application provides an amine trapping device, which comprises a base body extending in a vertical direction, the base body having an inner cavity, the base body being provided with an air inlet and an air outlet which are in communication with the inner cavity, the air inlet being located at a lower part of the base body, and the air outlet being located at an upper part of the base body; a first filler part arranged in the inner cavity, the first filler part being of a first porous structure; and a first water inlet part in communication with the inner cavity and located above the first filler part, so as to input first desalination water to the first filler part. The technical scheme of the application can effectively solve the problem of poor amine trapping effect in the related art.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide regeneration technology, and more specifically, to an amine capture device. Background Technology

[0002] In recent years, greenhouse gas emissions have increased dramatically, and large-scale emissions contribute to global warming. Among greenhouse gases, carbon dioxide has the greatest impact. Currently, carbon dioxide capture, utilization, and storage (CVC) technology is the mainstream approach and the most effective and economically feasible way to reduce carbon dioxide emissions.

[0003] In absorption towers, the absorbent is typically an organic amine. The absorbent reacts exothermically with carbon dioxide in the flue gas, causing some of the absorbent to volatilize and escape into the atmosphere with the decarbonized flue gas. Oxidative or thermal degradation of the absorbent can lead to the formation of carcinogens such as nitrosamines and nitrosamines, damaging soil organisms and polluting drinking water sources. Related technologies primarily control amine escape through water washing, specifically by spraying demineralized water into the decarbonized flue gas to capture amines. However, even with this method, a significant amount of amines in the decarbonized flue gas remains uncaptured. Summary of the Invention

[0004] The main objective of this invention is to provide an amine collection device to solve the problem of poor amine collection performance in related technologies.

[0005] To achieve the above objectives, the present invention provides an amine capture device, comprising: a substrate extending vertically, the substrate having an inner cavity, an air inlet and an air outlet communicating with the inner cavity, the air inlet being located at the lower part of the substrate and the air outlet being located at the upper part of the substrate; a first packing section disposed within the inner cavity, the first packing section having a first porous structure; and a first water inlet section communicating with the inner cavity and located above the first packing section for inputting a first demineralized water solution into the first packing section.

[0006] Furthermore, the amine collection device also includes a second water inlet and a spray section disposed in the inner cavity. The spray section is located below the first packing section, and the second water inlet communicates with the inner cavity to input the second demineralized water into the spray section.

[0007] Furthermore, the amine collection device also includes a water outlet and a cooler. The first end of the water outlet is connected to the inner cavity, and the second end of the water outlet is connected to the cooler. The water outlet can guide the first demineralized water that has passed through the first packing section into the cooler. The second water inlet is connected between the cooler and the substrate. The cooler can cool the first demineralized water and form the second demineralized water.

[0008] Furthermore, the amine collection device also includes a demister, which is located inside the inner cavity and above the first packing section.

[0009] Furthermore, the demister includes an upper mounting plate, a lower mounting plate, and a wire mesh structure located between the upper and lower mounting plates.

[0010] Furthermore, the demister also includes multiple guide columns, the upper ends of which are connected to the lower surface of the lower mounting plate; and / or, the spray section includes a spray mounting plate and multiple nozzles, at least one of which has its outlet axis angled to the vertical direction.

[0011] Furthermore, the amine collection device also includes a dry packing structure located between the first packing section and the spray section. The dry packing structure includes a mounting shell and a second packing section disposed within the mounting shell. The second packing section is a second porous structure. Multiple through holes are provided on the side of the mounting shell, and a gas inlet is provided on the lower surface of the mounting shell.

[0012] Furthermore, the amine collection device also includes a water hopper, which is disposed between the first packing section and the dry packing structure to collect the first demineralized water, and the water hopper is connected to the outlet section.

[0013] Furthermore, the amine collection device also includes a dust collector located inside the cavity and above the demister.

[0014] Furthermore, the cross-section of the substrate is circular, and the dust collector includes a dust collection mounting plate, multiple dust collection plates, and multiple electrode plates. The dust collection plates have vertical dust collection surfaces, and the electrode plates have vertical mounting surfaces. Both the dust collection plates and the electrode plates extend along the circumferential direction of the dust collection mounting plate. The multiple dust collection plates and multiple electrode plates are alternately arranged along the radial direction of the dust collection mounting plate, and multiple discharge needles are arranged on the vertical mounting surfaces.

[0015] Furthermore, a first magnetic suction component is provided on the dust removal mounting plate, and a second magnetic suction component is provided on the dust collection plate, with the first magnetic suction component and the second magnetic suction component magnetically engaging.

[0016] Applying the technical solution of this invention, the substrate is used for the flow of decarbonized flue gas and to provide an installation base for other structures. The substrate extends vertically and is provided with an air inlet and an air outlet communicating with the inner cavity. The air inlet is located at the lower part of the substrate. The decarbonized flue gas enters the inner cavity from the air inlet and flows from bottom to top, and is finally discharged to the outside from the air outlet. The first packing part is disposed in the inner cavity, and the first water inlet part communicates with the inner cavity and is located above the first packing part to input the first demineralized water into the first packing part. A first demineralized water solution is introduced into the first packing section. This solution flows from the top to the bottom of the first packing section. Because the first packing section has a porous structure, the flow path of the decarbonized flue gas within the first packing section is longer than in a solution where the flue gas flows directly from bottom to top without passing through the first packing section. This results in a longer contact time between the decarbonized flue gas and the first demineralized water solution, leading to more thorough absorption of amines within the flue gas and thus better amine capture. Therefore, the technical solution of this application effectively solves the problem of poor amine capture in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A cross-sectional schematic diagram of an embodiment of the amine trapping device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A cross-sectional schematic diagram of the dry packing structure of an amine trapping device;

[0020] Figure 3 It shows Figure 1 A cross-sectional schematic diagram of a portion of the dust collector in an amine capture device.

[0021] The above figures include the following reference numerals:

[0022] 10. Matrix; 11. Inner cavity; 12. Air inlet; 13. Air outlet;

[0023] 20. First packing section;

[0024] 30. First water intake section;

[0025] 40. Second water inlet;

[0026] 50. Sprayer unit; 51. Sprayer mounting plate; 52. Sprayer head;

[0027] 60. Water outlet section;

[0028] 70. Cooler;

[0029] 80. Demister; 81. Upper mounting plate; 82. Lower mounting plate; 83. Wire mesh structure; 84. Guide column;

[0030] 90. Dry packing structure; 91. Mounting shell; 911. Through hole; 912. Gas inlet; 92. Second packing section;

[0031] 100. Water bucket;

[0032] 110. Dust collector; 1101. Dust collector mounting plate; 1102. Dust collection plate; 1103. Electrode plate; 1104. Discharge needle. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] like Figure 1 As shown, this application provides an amine collection device. An embodiment of the amine collection device of this application includes: a substrate 10, a first packing section 20, and a first water inlet section 30; the substrate 10 extends vertically and has an inner cavity 11. An air inlet 12 and an air outlet 13 communicating with the inner cavity 11 are provided on the substrate 10. The air inlet 12 is located at the lower part of the substrate 10, and the air outlet 13 is located at the upper part of the substrate 10; the first packing section 20 is disposed in the inner cavity 11 and has a first porous structure; the first water inlet section 30 communicates with the inner cavity 11 and is located above the first packing section 20 to input first demineralized water into the first packing section 20.

[0037] Applying the technical solution of this embodiment, the base 10 is used for the flow of decarbonized flue gas and to provide an installation foundation for other structures. The base 10 extends vertically and is provided with an air inlet 12 and an air outlet 13 communicating with the inner cavity 11. The air inlet 12 is located at the lower part of the base 10. The decarbonized flue gas enters the inner cavity 11 from the air inlet 12 and flows from bottom to top, and is finally discharged to the outside from the air outlet 13. The first packing part 20 is disposed in the inner cavity 11, and the first water inlet 30 communicates with the inner cavity 11 and is located above the first packing part 20 to input the first demineralized water into the first packing part 20. The first inlet 30 introduces first demineralized water into the first packing section 20. The first demineralized water flows from the upper part to the lower part of the first packing section 20. Because the first packing section 20 has a porous structure, when the decarbonized flue gas enters from the bottom and flows upwards, the flow path of the decarbonized flue gas within the first packing section 20 is longer than in a scheme where the decarbonized flue gas flows directly from bottom to top without passing through the first packing section. This results in a longer contact time between the decarbonized flue gas and the first demineralized water, leading to more complete absorption of amines within the decarbonized flue gas and thus better amine capture. Therefore, the technical solution of this embodiment can effectively solve the problem of poor amine capture in related technologies.

[0038] It should be noted that "the air inlet 12 is located at the lower part of the base 10" means that the air inlet 12 is located at or near the lower end face of the base 10; "the air outlet 13 is located at the upper part of the base 10" means that the air outlet 13 is located at or near the upper end face of the base 10.

[0039] like Figure 1As shown, the amine collection device also includes a second water inlet 40 and a spray section 50 disposed in the inner cavity 11. The spray section 50 is located below the first packing section 20. The second water inlet 40 communicates with the inner cavity 11 to input second demineralized water into the spray section 50. Specifically, the spray section 50 uses a spraying method to allow the second demineralized water to first contact the decarbonized flue gas, thereby forming more second demineralized water droplets that fully contact the decarbonized flue gas, thus efficiently capturing the amines in the decarbonized flue gas first. Then, the decarbonized flue gas flows within the first packing section 20, allowing the first demineralized water to capture the amines in the decarbonized flue gas more fully. Furthermore, the two-stage water washing method makes the amines in the decarbonized flue gas more thoroughly captured.

[0040] like Figure 1 As shown, the amine collection device also includes a water outlet 60 and a cooler 70. The first end of the water outlet 60 is connected to the inner cavity 11, and the second end of the water outlet 60 is connected to the cooler 70. The water outlet 60 can introduce the first demineralized water that has passed through the first packing section 20 into the cooler 70. The second water inlet 40 is connected between the cooler 70 and the base 10. The cooler 70 can cool the first demineralized water and form the second demineralized water. Specifically, the cooler 70 is a circulating water-cooled cooler. The process of capturing amines in the first demineralized water is an exothermic process, which will cause the temperature of the first demineralized water to gradually rise. The ability of the first demineralized water with a higher temperature to capture amines will be weakened. Therefore, the outlet section 60 can introduce the first demineralized water (that is, the first demineralized water with a higher temperature) that has passed through the first packing section 20 into the cooler 70. The cooler 70 can cool this part of the first demineralized water and make this part of the first demineralized water form the second demineralized water. At this time, the temperature of the second demineralized water is lower (below 30°C), and its ability to capture amines is stronger. Thus, after the second demineralized water comes into contact with the decarbonized flue gas through the spray section 50, it can capture more amines in the decarbonized flue gas.

[0041] like Figure 1 As shown, the amine collection device also includes a demister 80, which is located inside the inner cavity 11 and above the first packing section 20. Specifically, since the decarbonized flue gas will generate a certain amount of foam after undergoing two-stage water washing, the demister 80 can collect this foam, thereby reducing the foam content in the decarbonized flue gas discharged to the outside.

[0042] like Figure 1 As shown, the demister 80 includes an upper mounting plate 81, a lower mounting plate 82, and a wire mesh structure 83, with the wire mesh structure 83 located between the upper mounting plate 81 and the lower mounting plate 82. Specifically, the upper mounting plate 81 and the lower mounting plate 82 are used to mount the wire mesh structure 83, which is a multi-layered mesh structure formed by stacked crisscrossing filaments. Foam in the decarbonized flue gas is adsorbed onto the wire mesh structure 83, thereby removing the foam from the decarbonized flue gas.

[0043] like Figure 1 As shown, the demister 80 also includes multiple guide columns 84, the upper ends of which are connected to the lower surface of the lower mounting plate 82. Specifically, as the foam on the wire mesh structure 83 gradually accumulates, it will continuously gather and form larger water droplets. To prevent these larger water droplets from adhering to the wire mesh structure 83 and thus reducing its ventilation, the guide columns 84 can direct the larger water droplets outward, thereby ensuring the ventilation of the wire mesh structure 83.

[0044] like Figure 1 As shown, the spray section 50 includes a spray mounting plate 51 and a plurality of nozzles 52, with the outlet axis of at least one nozzle 52 set at an angle to the vertical direction. Specifically, this arrangement allows the spray section 50 to cover a wider area, thereby enabling the second demineralized water to come into more thorough contact with the decarbonized flue gas, thus enhancing the amine capture effect.

[0045] like Figure 1 as well as Figure 2 As shown, the amine collection device also includes a dry packing structure 90 located between the first packing section 20 and the spray section 50. The dry packing structure 90 includes a mounting shell 91 and a second packing section 92 disposed within the mounting shell 91. The second packing section 92 is a second porous structure. Multiple through holes 911 are provided on the side of the mounting shell 91, and a gas inlet 912 is provided on the lower surface of the mounting shell 91. Specifically, the dry packing structure 90 is located between the first packing section 20 and the spray section 50. After the decarbonized flue gas undergoes the first stage of water washing, it contains a certain amount of small droplets. The decarbonized flue gas enters the dry packing structure 90 before entering the first packing section 20. The second packing section 92 is a second porous structure, which allows the decarbonized flue gas to have a longer flow path within the second packing section 92. This allows the small droplets in the decarbonized flue gas to adhere to the second packing section 92. After the small droplets continuously accumulate, they form a water flow and then flow out of the dry packing structure 90. Specifically, the mounting shell 91 is spaced apart from the inner wall of the base 10. Multiple through holes 911 are provided on the side of the mounting shell 91. The decarbonized flue gas can be discharged from the dry packing structure 90 through the through holes 911. Even if the first demineralized water flows onto the mounting shell 91, it will not enter the second packing section 92 through the through holes 911. The gas inlet 912 can be used for both the decarbonized flue gas to enter the second packing section 92 and for the water flow formed after the small droplets continuously accumulate.

[0046] like Figure 1 As shown, the amine collection device also includes a water hopper 100, which is disposed between the first packing section 20 and the dry packing structure 90 to collect the first demineralized water. The water hopper 100 is connected to the outlet section 60. Specifically, the water hopper 100 can collect the first demineralized water that has passed through the first packing section 20 and guide it into the cooler 70 through the outlet section 60.

[0047] like Figure 1 as well as Figure 3 As shown, the amine collection device also includes a dust collector 110, which is located inside the inner cavity 11 and above the demister 80. Specifically, since the decarbonized flue gas will generate a certain amount of aerosol particles after undergoing two-stage water washing, the dust collector 110 can collect these aerosol particles, thereby reducing the aerosol particle content in the decarbonized flue gas discharged to the outside.

[0048] like Figure 1 as well as Figure 3 As shown, the substrate 10 has a circular cross-section. The dust collector 110 includes a dust collection mounting plate 1101, multiple dust collection plates 1102, and multiple electrode plates 1103. The dust collection plates 1102 have vertical dust collection surfaces, and the electrode plates 1103 have vertical mounting surfaces. Both the dust collection plates 1102 and the electrode plates 1103 extend along the circumferential direction of the dust collection mounting plate 1101. The multiple dust collection plates 1102 and the multiple electrode plates 1103 are alternately arranged along the radial direction of the dust collection mounting plate 1101. Multiple discharge needles 1104 are arranged on the vertical mounting surfaces. Specifically, the discharge needles 1104 serve as discharge electrodes. They use high-voltage discharge to charge the aerosol particles in the decarbonized flue gas, and under the action of electrostatic adsorption, they move towards the dust collection plates 1102, thereby achieving the effect of removing aerosol particles.

[0049] Furthermore, a first magnetic suction component is provided on the dust collection mounting plate 1101, and a second magnetic suction component is provided on the dust collection plate 1102. The first and second magnetic suction components are magnetically attracted to each other. Specifically, after working for a period of time, the dust collection plate 1102 will adsorb a large number of aerosol particles, thereby reducing its ability to adsorb aerosol particles. The detachable dust collection plate 1102 makes it easier to remove and clean.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An amine collection device, characterized in that, include: The base (10) extends vertically and has an inner cavity (11). The base (10) is provided with an air inlet (12) and an air outlet (13) communicating with the inner cavity (11). The air inlet (12) is located at the lower part of the base (10) and the air outlet (13) is located at the upper part of the base (10). A first packing part (20) is disposed in the inner cavity (11), and the first packing part (20) is a first porous structure; The first water inlet (30) communicates with the inner cavity (11) and is located above the first packing section (20) to input the first demineralized water into the first packing section (20); The amine collection device further includes a second water inlet (40) and a spray section (50) disposed in the inner cavity (11). The spray section (50) is located below the first packing section (20). The second water inlet (40) communicates with the inner cavity (11) to input a second demineralized water into the spray section (50). The amine collection device further includes a water outlet (60) and a cooler (70). The first end of the water outlet (60) is connected to the inner cavity (11), and the second end of the water outlet (60) is connected to the cooler (70). The water outlet (60) can introduce the first demineralized water that has passed through the first packing section (20) into the cooler (70). The second water inlet (40) is connected between the cooler (70) and the substrate (10). The cooler (70) can cool the first demineralized water and form the second demineralized water. The amine collection device further includes a dry packing structure (90) located between the first packing section (20) and the spray section (50). The dry packing structure (90) includes a mounting shell (91) and a second packing section (92) disposed in the mounting shell (91). The second packing section (92) is a second porous structure. Multiple through holes (911) are provided on the side of the mounting shell (91), and a gas inlet (912) is provided on the lower surface of the mounting shell (91). The amine collection device further includes a water bucket (100), which is disposed between the first packing section (20) and the dry packing structure (90) to collect the first demineralized water, and the water bucket (100) is connected to the water outlet section (60).

2. The amine collection device according to claim 1, characterized in that, The amine collection device further includes a demister (80), which is located inside the inner cavity (11) and above the first packing section (20).

3. The amine collection device according to claim 2, characterized in that, The demister (80) includes an upper mounting plate (81), a lower mounting plate (82), and a wire mesh structure (83), the wire mesh structure (83) being located between the upper mounting plate (81) and the lower mounting plate (82).

4. The amine collection device according to claim 3, characterized in that, The demister (80) further includes a plurality of guide columns (84), the upper ends of which are connected to the lower surface of the lower mounting plate (82); and / or, The spray section (50) includes a spray mounting plate (51) and a plurality of nozzles (52), wherein the outlet axis of at least one of the nozzles (52) is set at an angle to the vertical direction.

5. The amine collection device according to any one of claims 2 to 4, characterized in that, The amine collection device also includes a dust collector (110) located inside the inner cavity (11) and above the demister (80).

6. The amine collection device according to claim 5, characterized in that, The substrate (10) has a circular cross-section. The dust collector (110) includes a dust collection mounting plate (1101), multiple dust collection plates (1102), and multiple electrode plates (1103). The dust collection plate (1102) has a vertical dust collection surface, and the electrode plate (1103) has a vertical mounting surface. The dust collection plate (1102) and the electrode plate (1103) both extend along the circumferential direction of the dust collection mounting plate (1101). The multiple dust collection plates (1102) and the multiple electrode plates (1103) are alternately arranged along the radial direction of the dust collection mounting plate (1101). Multiple discharge needles (1104) are provided on the vertical mounting surface.

7. The amine collection device according to claim 6, characterized in that, The dust removal mounting plate (1101) is provided with a first magnetic suction component, and the dust collection plate (1102) is provided with a second magnetic suction component, wherein the first magnetic suction component and the second magnetic suction component are magnetically attracted to each other.

Images