Amine capture device

Abstract

Disclosed is an amine capture device. The amine capture device comprises: a device body extending in a vertical direction, wherein the device body has an inner cavity, and the device body is 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 portion of the device body, and the air outlet being located at an upper portion of the device body; a first packing portion disposed in the inner cavity, wherein the first packing portion is of a first porous structure; and a first water intake portion, which is in communication with the inner cavity and is located above the first packing portion, so as to input first desalted water into the first packing portion.

Description

Ammonia capture device

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410830580.0, filed on June 25, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of carbon dioxide regeneration, in particular, to an ammonia capture device. BACKGROUND

[0004] In recent years, the emission of greenhouse gases has increased significantly, and large-scale emission of greenhouse gases will lead to global warming. Among the greenhouse gases, carbon dioxide has the greatest impact. At present, carbon dioxide capture, utilization and storage technology as the current mainstream technology is the most effective and economically feasible way to achieve carbon dioxide emission reduction.

[0005] Among them, in the absorption tower, the absorbent is usually organic amine, and the absorbent reacts with carbon dioxide in the flue gas to cause part of the absorbent to volatilize and escape into the atmosphere with the decarburization flue gas. The absorbent will cause carcinogens such as nitrosamine and nitrosamine through oxidative degradation or thermal degradation, thereby damaging the organisms in the soil and also polluting the drinking water source. In the related art, the method for controlling amine escape is mainly realized by the way of water washing, specifically, by spraying desalted water to the decarburization flue gas to capture the amine, but in this way, there are still a lot of amines in the decarburization flue gas that cannot be captured. SUMMARY

[0006] The main purpose of the present disclosure is to provide an ammonia capture device to solve the problem of poor ammonia capture effect in the related art.

[0007] To achieve the above-mentioned purpose, the present disclosure provides an ammonia capture device, comprising: 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 communicating with the inner cavity, the air inlet being located at the lower part of the base body, and the air outlet being located at the upper part of the base body; a first filler part provided in the inner cavity, the first filler part being a first porous structure; a first water inlet part communicating with the inner cavity and located above the first filler part to input first desalted water to the first filler part.

[0008] In some embodiments, the ammonia capture device further comprises a second water inlet part and a spraying part provided in the inner cavity, the spraying part being located below the first filler part, and the second water inlet part communicating with the inner cavity to input second desalted water to the spraying part.

[0009] In some embodiments, the amine capture device further comprises a water outlet portion and a cooler, the first end of the water outlet portion is communicated with the inner cavity, the second end of the water outlet portion is communicated with the cooler, the water outlet portion is capable of guiding the first desalted water through the first packing portion into the cooler, the second water inlet portion is connected between the cooler and the base body, and the cooler is capable of cooling the first desalted water and forming second desalted water.

[0010] In some embodiments, the amine capture device further comprises a demister, the demister is located in the inner cavity and above the first packing portion.

[0011] In some embodiments, the demister comprises an upper mounting plate, a lower mounting plate, and a wire mesh structure, the wire mesh structure is located between the upper mounting plate and the lower mounting plate.

[0012] In some embodiments, the demister further comprises a plurality of flow guide columns, the upper end of the flow guide column is connected to the lower surface of the lower mounting plate; and / or, the spray portion comprises a spray mounting plate and a plurality of spray heads, the outlet axis of at least one spray head is arranged at an angle with the vertical direction.

[0013] In some embodiments, the amine capture device further comprises a dry packing structure located between the first packing portion and the spray portion, the dry packing structure comprises a mounting shell and a second packing portion arranged in the mounting shell, the second packing portion is a second porous structure, a plurality of through holes are arranged on the side surface of the mounting shell, and a gas inlet is arranged on the lower surface of the mounting shell.

[0014] In some embodiments, the amine capture device further comprises a water bucket, the water bucket is arranged between the first packing portion and the dry packing structure to collect the first desalted water, and the water bucket is communicated with the water outlet portion.

[0015] In some embodiments, the amine capture device further comprises a dust collector, the dust collector is located in the inner cavity and above the demister.

[0016] In some embodiments, the cross section of the base body is a circular structure, the dust collector comprises a dust collection mounting plate, a plurality of dust collection plates, and a plurality of electrode plates, the dust collection plate has a vertical dust collection surface, the electrode plate has a vertical mounting surface, the dust collection plate and the electrode plate both extend along the circumferential direction of the dust collection mounting plate, the plurality of dust collection plates and the plurality of electrode plates are alternately arranged along the radial direction of the dust collection mounting plate, and a plurality of discharge needles are arranged on the vertical mounting surface.

[0017] In some embodiments, a first magnetic attraction member is arranged on the dust collection mounting plate, a second magnetic attraction member is arranged on the dust collection plate, and the first magnetic attraction member and the second magnetic attraction member are magnetically attracted and matched.

[0018] The technical scheme of the embodiment of the present disclosure is applied, the base body is used for flow of the decarburization flue gas and provides a mounting base for other structures, the base body extends along a vertical direction, the base body is provided with a gas inlet and a gas outlet which are in communication with the inner cavity, the gas inlet is located at a lower part of the base body, the decarburization flue gas enters the inner cavity from the gas inlet and flows from bottom to top, and finally is discharged to the outside from the gas outlet; the first filler part is arranged in the inner cavity, the first water inlet part is in communication with the inner cavity and is located above the first filler part to input the first desalted water to the first filler part, the first water inlet part inputs the first desalted water to the first filler part, the first desalted water flows from the upper part to the lower part of the first filler part, and because the first filler part is of the first porous structure, when the decarburization flue gas flows upwards after entering the first filler part from the lower part, the flow path of the decarburization flue gas in the first filler part is longer than that of the decarburization flue gas which directly flows from bottom to top without passing through the first filler part, so that the contact time of the decarburization flue gas with the first desalted water is longer, and the amine in the decarburization flue gas is more fully absorbed, so that the trapping effect of the amine is better. Therefore, the technical scheme of the embodiment of the present disclosure can effectively solve the problem of poor amine trapping effect in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0019] The description and drawings of the specification constitute a part of this disclosure and are included to further provide a further understanding of the present disclosure, and the illustrative embodiments of the present disclosure and their descriptions serve to explain the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

[0020] Fig. 1 shows a cross-sectional schematic view of an embodiment of an amine trapping device according to an embodiment of the present disclosure;

[0021] Fig. 2 shows a cross-sectional schematic view of a dry filler structure of the amine trapping device of Fig. 1;

[0022] Fig. 3 shows a cross-sectional schematic view of a part of a structure of a dust remover of the amine trapping device of Fig. 1.

[0023] In the above drawings, the following reference signs are included: 10, base body; 11, inner cavity; 12, gas inlet; 13, gas outlet; 20, first filler part; 30, first water inlet part; 40, second water inlet part; 50, spraying part; 51, spraying mounting plate; 52, spray head; 60, water outlet part; 70, cooler; 80, defoaming device; 81, upper mounting plate; 82, lower mounting plate; 83, wire mesh structure; 84, flow guide column; 90, dry filler structure; 91, mounting shell; 911, through hole; 912, gas inlet; 92, second filler part; 100, water bucket; 110, dust remover; 1101, dust removal mounting plate; 1102, dust collection plate; 1103, electrode plate; 1104, discharge needle. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the present disclosure and its application or uses. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present disclosure.

[0025] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth herein are not limiting. It should be understood that the various parts of the drawings are not necessarily drawn to scale, and that, for the purpose of convenience and clarity, not all components and steps can be shown in a given figure. Techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but are to be considered as part of the present disclosure. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and are not to be construed as limiting. Other examples of the exemplary embodiments can have different values. It should be noted that like numbers and letters refer to like items throughout the drawings, and once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] As shown in FIG. 1, the amine trapping device according to the embodiments of the present disclosure includes a base body 10, a first filler part 20, and a first water inlet part 30. The base body 10 extends in a vertical direction. The base body 10 has an inner cavity 11. The base body 10 is provided with an air inlet 12 and an air outlet 13 which communicate with the inner cavity 11. The air inlet 12 is located at the lower part of the base body 10, and the air outlet 13 is located at the upper part of the base body 10. The first filler part 20 is arranged in the inner cavity 11. The first filler part 20 has a first porous structure. The first water inlet part 30 communicates with the inner cavity 11 and is located above the first filler part 20 to input first desalinated water to the first filler part 20.

[0028] The technical scheme of the embodiment of the present disclosure is applied, the base body 10 is used for flow of the decarburization flue gas and provides a mounting base for other structures, the base body 10 extends along a vertical direction, the base body 10 is provided with a gas inlet 12 and a gas outlet 13 which communicate with the inner cavity 11, the gas inlet 12 is located at a lower part of the base body 10, the decarburization flue gas enters the inner cavity 11 from the gas inlet 12 and flows from bottom to top, and finally is discharged to the outside from the gas outlet 13; the first filler part 20 is arranged in the inner cavity 11, the first water inlet part 30 communicates with the inner cavity 11 and is located above the first filler part 20 to input the first desalted water to the first filler part 20, the first water inlet part 30 inputs the first desalted water to the first filler part 20, the first desalted water flows from an upper part to a lower part of the first filler part 20, because the first filler part 20 is a first porous structure, when the decarburization flue gas flows upwards after entering the first filler part 20 from the lower part, the flow path of the decarburization flue gas in the first filler part 20 is longer than the flow path of the decarburization flue gas which directly flows from bottom to top without passing through the first filler part, so that the contact time of the decarburization flue gas and the first desalted water is longer, and the amine in the decarburization flue gas is more fully absorbed, so that the trapping effect of the amine is better. Therefore, the technical scheme of the embodiment of the present disclosure can effectively solve the problem of poor amine trapping effect in the related art.

[0029] It should be noted that "the gas inlet 12 is located at the lower part of the base body 10" means that the gas inlet 12 is located at the lower end face of the base body 10 or a part close to the lower end face; "the gas outlet 13 is located at the upper part of the base body 10" means that the gas outlet 13 is located at the upper end face of the base body 10 or a part close to the upper end face.

[0030] As shown in FIG. 1, the amine trapping device further comprises a second water inlet part 40 and a spraying part 50 arranged in the inner cavity 11, the spraying part 50 is located below the first filler part 20, and the second water inlet part 40 communicates with the inner cavity 11 to input the second desalted water to the spraying part 50. Specifically, the spraying part 50 sprays the second desalted water to first contact the decarburization flue gas, so that the second desalted water forms more water droplets to fully contact the decarburization flue gas, and then the amine in the decarburization flue gas is more efficiently trapped in the first, and then the decarburization flue gas flows in the first filler part 20, so that the amine in the decarburization flue gas is more fully trapped by the first desalted water, and then the amine in the decarburization flue gas is more completely trapped by the two-stage water washing.

[0031] As shown in FIG. 1, the amine capturing device further comprises a water outlet 60 and a cooler 70, the first end of the water outlet 60 is communicated with the inner cavity 11, the second end of the water outlet 60 is communicated with the cooler 70, the water outlet 60 can guide the first desalted water which has passed through the first filler part 20 into the cooler 70, the second water inlet 40 is connected between the cooler 70 and the base body 10, and the cooler 70 can cool the first desalted water and form the second desalted water. Specifically, the cooler 70 is a circulating water cooling cooler, the process of capturing the amine by the first desalted water is an exothermic process, which can gradually increase the temperature of the first desalted water, and the capturing ability of the amine of the first desalted water with higher temperature will be weakened, therefore, the water outlet 60 can guide the first desalted water which has passed through the first filler part 20 (i.e. the first desalted water with higher temperature) into the cooler 70, the cooler 70 can cool the first desalted water and make the first desalted water form the second desalted water, at this time, the temperature of the second desalted water is lower (lower than 30℃), and the capturing ability of the amine of the second desalted water is stronger, so that the second desalted water can capture more amine in the decarbonized flue gas after the second desalted water contacts with the decarbonized flue gas through the spraying part 50.

[0032] As shown in FIG. 1, the amine capturing device further comprises a defoamer 80, the defoamer 80 is located in the inner cavity 11 and above the first filler part 20. Specifically, since the decarbonized flue gas has passed through two-stage water washing, a certain amount of foam will be generated, and the defoamer 80 can collect the foam, thereby reducing the content of the foam in the decarbonized flue gas which is discharged to the outside.

[0033] As shown in FIG. 1, the defoamer 80 comprises an upper mounting plate 81, a lower mounting plate 82 and a wire mesh structure 83, and the wire mesh structure 83 is 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 for mounting the wire mesh structure 83, the wire mesh structure 83 is a multi-layer mesh structure which is formed by stacking the longitudinal and transverse intersecting wire structures, and the foam in the decarbonized flue gas will be adsorbed on the wire mesh structure 83, so that the foam in the decarbonized flue gas is removed.

[0034] As shown in FIG. 1, the defoamer 80 further comprises a plurality of flow guide columns 84, and the upper end of the flow guide column 84 is connected to the lower surface of the lower mounting plate 82. Specifically, the foam on the wire mesh structure 83 will continuously gather and form larger water droplets in the process of gradually accumulating, in order to avoid that the larger water droplets are attached to the wire mesh structure 83 and reduce the ventilation of the wire mesh structure 83, the flow guide column 84 can guide the larger water droplets outward, thereby ensuring the ventilation of the wire mesh structure 83.

[0035] As shown in FIG. 1, the spraying part 50 comprises a spraying mounting plate 51 and a plurality of spray heads 52, and the outlet axis of at least one of the spray heads 52 is arranged at an angle with the vertical direction. Specifically, the spraying part 50 is arranged in this way so as to have a wider coverage range, thereby enabling the second desalted water to contact the decarbonized flue gas more fully, and thus enhancing the capture effect of the amine.

[0036] As shown in FIG. 1 and FIG. 2, the amine capture device further comprises a dry packing structure 90 located between the first packing part 20 and the spraying part 50, and the dry packing structure 90 comprises a mounting shell 91 and a second packing part 92 arranged in the mounting shell 91, the second packing part 92 being a second porous structure, and a plurality of through holes 911 are arranged on the side surface of the mounting shell 91, and a gas inlet 912 is arranged on the lower surface of the mounting shell 91. Specifically, the dry packing structure 90 is located between the first packing part 20 and the spraying part 50, and the decarbonized flue gas has a certain amount of small droplets after the first-stage water washing, and the decarbonized flue gas enters the dry packing structure 90 before entering the first packing part 20, and the second packing part 92 is a second porous structure, so that the flow path of the decarbonized flue gas in the second packing part 92 is long, thereby enabling the small droplets in the decarbonized flue gas to adhere to the second packing part 92, and the small droplets continuously gather to form a water flow which then flows out of the dry packing structure 90; specifically, the mounting shell 91 is arranged at a distance from the inner wall of the base body 10, a plurality of through holes 911 are arranged on the side surface of the mounting shell 91, and the decarbonized flue gas can be discharged from the dry packing structure 90 through the through holes 911, while the first desalted water cannot enter the second packing part 92 through the through holes 911 even if it flows onto the mounting shell 91, and the gas inlet 912 can be used for both the decarbonized flue gas entering the second packing part 92 and the water flow formed after the small droplets continuously gather being discharged.

[0037] As shown in FIG. 1, the amine capture device further comprises a water bucket 100 arranged between the first packing part 20 and the dry packing structure 90 to collect the first desalted water, and the water bucket 100 is in communication with the water outlet part 60. Specifically, the water bucket 100 can collect the first desalted water passing through the first packing part 20 and guide the first desalted water into the cooler 70 through the water outlet part 60.

[0038] As shown in FIG. 1 and FIG. 3, the amine capture device further comprises a dust collector 110 located in the inner cavity 11 and above the demister 80. Specifically, since the decarbonized flue gas has undergone two-stage water washing, a certain amount of aerosol particles will be generated, and the dust collector 110 can collect these aerosol particles, thereby reducing the content of aerosol particles in the decarbonized flue gas discharged to the outside.

[0039] As shown in FIG. 1 and FIG. 3, the cross section of the base body 10 is a circular structure, the dust collector 110 includes a dust collector mounting plate 1101, a plurality of dust collecting plates 1102 having vertical dust collecting surfaces, and a plurality of electrode plates 1103 having vertical mounting surfaces, the dust collecting plates 1102 and the electrode plates 1103 extend along the circumferential direction of the dust collector mounting plate 1101, the plurality of dust collecting plates 1102 and the plurality of electrode plates 1103 are alternately arranged along the radial direction of the dust collector mounting plate 1101, and a plurality of discharge needles 1104 are arranged on the vertical mounting surfaces. Specifically, the discharge needles 1104 serve as discharge electrodes, charge the aerosol particles in the decarburized flue gas by high-voltage discharge, and move to the dust collecting plates 1102 under the action of electrostatic adsorption, thereby achieving the effect of removing the aerosol particles.

[0040] In addition, a first magnetic attraction member is arranged on the dust collector mounting plate 1101, a second magnetic attraction member is arranged on the dust collecting plate 1102, and the first magnetic attraction member and the second magnetic attraction member are magnetically attracted and matched. Specifically, the dust collecting plate 1102 will adsorb more aerosol particles after working for a period of time, thereby reducing the ability of the dust collecting plate 1102 to adsorb aerosol particles. By detachably arranging the dust collecting plate 1102, the dust collecting plate 1102 is more easily removed for cleaning.

[0041] In the description of the present disclosure, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the protection scope of the present disclosure; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0042] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Therefore, the illustrative term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0043] In addition, it should be noted that the use of the terms "first", "second", etc. to qualify parts is only intended to facilitate the distinction of the corresponding parts, and in the absence of a further declaration, the above terms do not have a special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0044] The above only describes the preferred embodiments of the present disclosure and is not intended to limit the present disclosure. Various modifications and changes can be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An amine collection device, characterized in that, include: A 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 filling part (20) is disposed in the inner cavity (11), and the first filling part (20) has 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).

2. The amine collection device according to claim 1, characterized in that, 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).

3. The amine collection device according to claim 2, characterized in that, The amine capture 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.

4. The amine collection device according to any one of claims 1 to 3, 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).

5. The amine collection device according to claim 4, 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).

6. The amine collection device according to claim 5, 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 nozzle (52) is set at an angle to the vertical direction.

7. The amine collection device according to any one of claims 2 to 6, characterized in that, 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. The mounting shell (91) has multiple through holes (911) on its side and a gas inlet (912) on its lower surface.

8. The amine collection device according to claim 7, characterized in that, 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).

9. The amine collection device according to any one of claims 4 to 8, characterized in that, The amine collection device further includes a dust collector (110), which is located inside the inner cavity (11) and above the demister (80).

10. The amine collection device according to claim 9, 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.

11. The amine collection device according to claim 10, 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.

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