A device for capturing carbon dioxide in flue gas

Abstract

The utility model belongs to flue gas treatment technical field especially relates to a kind of carbon dioxide trapping devices in flue gas, it include: jar body, the sidewall of jar body is fixedly connected with the air inlet pipe for flue gas entering;Box, the box is set at the top of jar body, the inner chamber of the box rotationally is provided with collection pipe, the sidewall upper end of the collection pipe is equipped with exhaust hole, the bottom of the collection pipe is provided with bell part, the bottom end of the bell part is provided with the drainage funnel for flue gas and liquid mixing, the sidewall of the drainage funnel is equipped with the helical groove of guiding, the bottom end of the drainage funnel is fixedly connected with connecting pipe, the connecting pipe is communicated with air inlet pipe, the inner chamber top of the box is fixedly connected with the shower head for spraying adsorption liquid, compared with prior art, the utility model increases gas-liquid contact area and contact length, improves carbon dioxide trapping efficiency, reduces adsorption liquid waste.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas treatment technology, and in particular relates to a carbon dioxide capture device in flue gas. Background Technology

[0002] Carbon dioxide is a major greenhouse gas, and its continuously rising concentration has led to environmental problems such as global warming, glacial melting, and sea-level rise. During flue gas emissions, carbon dioxide in the flue gas usually needs to be captured and treated. Carbon dioxide capture devices in flue gas are usually complete equipment systems that separate and enrich carbon dioxide from industrial flue gas through technologies such as chemical absorption and physical adsorption. Their core principle usually utilizes the differences in solubility or reactivity of gas components in physical properties to selectively separate carbon dioxide.

[0003] Chinese patent application number 202421800287.1 discloses a carbon dioxide capture device for flue gas. An inlet pipe is located on one side of a spray tower, an outlet pipe is located at the top of the spray tower, a spraying mechanism is located inside the spray tower, a connecting pipe is fixedly connected to the other side of the spray tower, and a solution pump is fixedly connected to the bottom of the connecting pipe. When the flue gas flows to the spray plate, the circular holes on the spray plate cut through the space, dispersing the flue gas and allowing it to flow through small spaces. A second nozzle sprays an acetic acid / fly ash solution through the circular holes on the spray plate. This increases the contact area between the acetic acid / fly ash solution and the carbon dioxide in the flue gas as the flue gas passes through the holes, allowing for a more complete reaction between the carbon dioxide and the acetic acid / fly ash solution. This improves the gas-liquid contact reaction efficiency, thereby increasing the carbon dioxide capture efficiency in the flue gas.

[0004] However, existing technologies have the following problems when used: Existing flue gas carbon dioxide capture devices suffer from insufficient gas-liquid contact, resulting in low capture efficiency. The disordered flow path of the adsorbent liquid after spraying reduces the overall reliability of the device, making it difficult to achieve stable capture for flue gas purification. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing a carbon dioxide capture device for flue gas, comprising: The tank body has an air inlet pipe for flue gas to enter fixedly connected to its side wall; The container is located on top of the tank. A collection pipe is rotatably installed inside the container. An exhaust hole is opened at the upper end of the side wall of the collection pipe. A bell-shaped part is provided at the bottom of the collection pipe. A drainage funnel for mixing flue gas and liquid is provided at the bottom end of the bell-shaped part. A spiral groove for guiding flow is opened on the side wall of the drainage funnel. A connecting pipe is fixedly connected to the bottom end of the drainage funnel. The connecting pipe communicates with the air inlet pipe. A shower head for spraying the adsorbent liquid is fixedly connected to the top of the container. The shower head is located at the top of the collection pipe. A power component for driving the collection pipe to rotate is provided on the side wall of the container. The flue gas enters the connecting pipe through the inlet pipe and is then guided into the collection pipe through the connecting pipe. The power component drives the collection pipe and the drainage funnel to rotate synchronously, which allows the adsorbent liquid for carbon dioxide capture to flow into the tank through the spiral groove. The purified gas is discharged through the exhaust port.

[0006] Furthermore, a partition is fixedly connected to the upper end of the inner cavity of the box, and the collection pipe extends vertically through the partition, with the collection pipe rotatably connected to the partition.

[0007] Furthermore, the upper and lower ends of the bell-shaped part are connected, and the inner sidewall of the bell-shaped part is provided with an arc-shaped surface. The collecting tube, the bell-shaped part, and the arc-shaped surface are integrally formed from metal.

[0008] Furthermore, a protective cylinder is fixedly connected to the inner cavity of the box, and the lower end of the protective cylinder extends into the inner cavity of the tank.

[0009] Furthermore, the power assembly includes a drive motor, which is fixedly connected to the side wall of the housing. The power output end of the drive motor passes through the side wall of the housing and is fixedly connected to a second bevel gear. The side wall of the collection pipe is fixedly connected to a first bevel gear, and the second bevel gear and the first bevel gear are meshed together.

[0010] Furthermore, a pump body is fixedly connected to the top of the housing, and the output end of the pump body is connected to the input end of the shower head.

[0011] Furthermore, an exhaust pipe is fixedly connected to the upper end of the side wall of the box.

[0012] Furthermore, a flow guide hopper is fixedly connected to the bottom of the tank, and a temporary storage box is fixedly connected to the bottom of the flow guide hopper.

[0013] Furthermore, the side wall of the temporary storage box is connected to a transport pipe, and the end of the transport pipe is connected to the input end of the pump body.

[0014] Furthermore, one end of the pump body is connected to a water inlet pipe, and the bottom end of the temporary storage tank is connected to a discharge pipe.

[0015] Compared with existing technologies, the carbon dioxide capture device in flue gas described in this utility model has the following advantages: The synchronous rotation design of the collection pipe and the drain funnel allows the adsorbent sprayed from the shower head to diffuse after being guided by the bell-shaped arc surface. The liquid then flows along the spiral groove on the side wall of the drain funnel, increasing the gas-liquid contact area and contact time, thus improving the carbon dioxide capture efficiency. The directional flow-guiding structure of the protective cylinder and the guide funnel ensures the orderly transfer of the adsorbent from the box to the tank and then to the temporary storage box, reducing disordered diffusion of the liquid and minimizing adsorbent waste. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an exploded view of the drainage funnel of this utility model; Figure 4 This is a partially disassembled structural diagram of this utility model.

[0017] The markings in the diagram are as follows: 100. Tank body; 110. Air inlet pipe; 120. Flow guide hopper; 130. Temporary storage box; 131. Discharge pipe; 140. Transport pipe; 200. Box body; 210. Collection pipe; 211. Exhaust port; 212. First bevel gear; 220. Bell-shaped part; 221. Arc-shaped part; 230. Drainage funnel; 231. Spiral groove; 240. Connecting pipe; 241. Protective cylinder; 250. Drive motor; 251. Second bevel gear; 260. Pump body; 261. Shower head; 262. Water inlet pipe; 270. Exhaust pipe; 280. Baffle plate. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] like Figures 1-4 As shown, a carbon dioxide capture device for flue gas includes: Tank 100, with an air inlet pipe 110 for flue gas to enter fixedly connected to the side wall of tank 100; The box body 200 is located on top of the tank body 100. A collection pipe 210 is rotatably installed in the inner cavity of the box body 200. An exhaust hole 211 is opened at the upper end of the side wall of the collection pipe 210. A bell-shaped part 220 is provided at the bottom of the collection pipe 210. A drainage funnel 230 for mixing flue gas and liquid is provided at the bottom end of the bell-shaped part 220. A flow-guiding spiral groove 231 is opened on the side wall of the drainage funnel 230. A connecting pipe 240 is fixedly connected to the bottom end of the drainage funnel 230. The connecting pipe 240 is connected to the air inlet pipe 110. A shower head 261 for spraying the adsorbent liquid is fixedly connected to the top of the inner cavity of the box body 200. The shower head 261 is located at the top of the collection pipe 210. A power component for driving the collection pipe 210 to rotate is provided on the side wall of the box body 200. The flue gas enters the connecting pipe 240 through the inlet pipe 110 and is then introduced into the collection pipe 210 through the connecting pipe 240. The power component drives the collection pipe 210 and the drainage funnel 230 to rotate synchronously, which allows the adsorbent liquid for carbon dioxide capture to flow into the tank 100 through the spiral groove 231. The purified gas is discharged through the exhaust port 211.

[0023] As a preferred example of this utility model, the flue gas enters the connecting pipe 240 through the inlet pipe 110 and is then introduced into the collection pipe 210, forming a directional channel from the inlet to the reaction zone. The power component drives the collection pipe 210 and the drain funnel 230 to rotate. The spiral groove 231 on the side wall of the drain funnel 230 can guide the liquid flow. The shower head 261 on the top of the box 200 is located at the top of the collection pipe 210. The adsorbent sprayed by the shower head can form a reverse contact with the flue gas rising in the collection pipe 210 to capture carbon dioxide in the flue gas. The purified gas is discharged through the exhaust port 211 at the top of the collection pipe 210.

[0024] In the example of this application, a partition 280 is fixedly connected to the upper end of the inner cavity of the box 200, and a collection pipe 210 extends vertically through the partition 280. The collection pipe 210 and the partition 280 are rotatably connected by a sealed bearing.

[0025] As a preferred example of this utility model, the partition 280 at the upper end of the inner cavity of the housing 200 can separate the internal space of the housing and isolate the power component area. The collection pipe 210 vertically penetrates the partition 280 and is rotatably connected to it. The partition 280 can provide radial support for the collection pipe 210.

[0026] In the example of this application, the upper and lower ends of the bell-shaped part 220 are connected, and the inner sidewall of the bell-shaped part 220 is provided with an arc-shaped part 221. The collecting tube 210, the bell-shaped part 220 and the arc-shaped part 221 are integrally formed of metal material.

[0027] As a preferred example of this utility model, the design of the bell-shaped part 220, which is open at both ends, ensures that the flue gas can flow smoothly upward from the collection pipe 210. The arc-shaped part 221 on the inner wall of the bell-shaped part 220 can guide the adsorbent liquid to flow along the wall surface, preventing the liquid from accumulating in the bell-shaped part 220. The collection pipe 210, the bell-shaped part 220 and the arc-shaped part 221 are integrally formed of metal, which enhances the structural strength and sealing of the connection between the three, prevents gas and liquid leakage, and improves the overall rigidity and fatigue resistance.

[0028] In the example of this application, a protective cylinder 241 is fixedly connected to the inner cavity of the box 200, and the lower end of the protective cylinder 241 extends into the inner cavity of the tank 100.

[0029] As a preferred example of this utility model, the lower end of the protective cylinder 241 fixed inside the box 200 extends into the inner cavity of the tank 100, forming an independent flow channel. The protective cylinder 241 can guide the adsorbent liquid into the tank 100, avoiding disorderly diffusion of the liquid.

[0030] In the example of this application, the power assembly includes a drive motor 250, which is fixedly connected to the side wall of the housing 200. The power output end of the drive motor 250 passes through the side wall of the housing 200 and is fixedly connected to a second bevel gear 251. A first bevel gear 212 is fixedly connected to the side wall of the collection pipe 210. The second bevel gear 251 and the first bevel gear 212 are meshed together.

[0031] As a preferred example of this utility model, in the power assembly, the drive motor 250 is fixed to the side wall of the housing 200, and its power output end is driven by the first bevel gear 212 on the side wall of the collection pipe 210 through the meshing of the second bevel gear 251, which can drive the collection pipe 210 and the drainage funnel 230 to rotate synchronously.

[0032] In the example of this application, a pump body 260 is fixedly connected to the top of the housing 200, and the output end of the pump body 260 is connected to the input end of the shower head 261.

[0033] As a preferred example of this utility model, the pump body 260 at the top of the housing 200 is connected to the input end of the shower head 261, which can deliver adsorbent liquid to the shower head 261 to ensure that the shower head 261 sprays water evenly.

[0034] In the example of this application, an exhaust pipe 270 is fixedly connected to the upper end of the side wall of the housing 200.

[0035] As a preferred example of this utility model, the exhaust pipe 270, which is fixedly connected to the upper side wall of the housing 200, provides a clear discharge channel for the purified gas. Its setting position conforms to the upward flow law of the purified gas, and can discharge the purified gas out of the housing 200.

[0036] In the example of this application, a guide bucket 120 is fixedly connected to the bottom of the tank 100, and a temporary storage box 130 is fixedly connected to the bottom of the guide bucket 120.

[0037] As a preferred example of this utility model, the guide bucket 120 at the bottom of the tank 100 can guide the rich liquid after carbon dioxide adsorption in the tank to concentrate and converge at the bottom. The temporary storage tank 130 connected to the bottom of the guide bucket 120 can realize the temporary storage of the rich liquid, providing a buffer space for the subsequent processing of the adsorbed liquid.

[0038] In the example of this application, the side wall of the temporary storage box 130 is connected to a transport pipe 140, and the end of the transport pipe 140 is connected to the input end of the pump body 260.

[0039] As a preferred example of this utility model, the temporary storage tank 130 is connected to the input end of the pump body 260 through the transport pipe 140, thus constructing a closed-loop circulation system for the adsorbent liquid. The adsorbent liquid in the temporary storage tank 130 can be transported back to the pump body 260 through the transport pipe 140 and then sprayed by the shower head 261 for reuse.

[0040] In the example of this application, one end of the pump body 260 is connected to the water inlet pipe 262, the other end of the water inlet pipe 262 is connected to the external adsorption liquid source, and the bottom end of the temporary storage tank 130 is connected to the discharge pipe 131.

[0041] As a preferred example of this utility model, the water inlet pipe 262 connected to the pump body 260 provides a channel for replenishing fresh adsorbent liquid to the device. When the concentration of adsorbent liquid in the temporary storage tank 130 decreases or the amount is insufficient, new liquid can be replenished in time through the water inlet pipe 262 to ensure that the capture performance of the adsorbent liquid meets the requirements. The discharge pipe 131 at the bottom of the temporary storage tank 130 can discharge the failed adsorbent liquid or excess waste liquid in time, which is convenient for centralized regeneration treatment or compliant discharge.

[0042] In practical use, flue gas enters through the inlet pipe 110 and is then guided into the collection pipe 210 through the connecting pipe 240. The pump 260 at the top of the housing 200 delivers the adsorbent liquid to the shower head 261 at the top of the collection pipe 210, which sprays the adsorbent liquid into the collection pipe 210. Simultaneously, the drive motor 250 on the side wall of the housing 200 starts, and the second bevel gear 251 at its power output end meshes with the first bevel gear 212 on the side wall of the collection pipe 210, driving the collection pipe 210, the bell-shaped part 220, and the drain funnel 230 to rotate synchronously. The sprayed adsorbent liquid flows through the arc-shaped part 221 on the inner side wall of the bell-shaped part 220 and enters the drain funnel 230, flowing along the spiral groove on the side wall of the drain funnel 230. The liquid flows down through the protective cylinder 241, which is fixed inside the inner cavity of the box 200 and extends to the inner cavity of the tank 100. The guide bucket 120 at the bottom of the tank 100 guides the liquid after adsorbing carbon dioxide to the temporary storage tank 130. The liquid in the temporary storage tank 130 is transported to the input end of the pump body 260 through the transport pipe 140 to achieve circulation. The pump body 260 can also be replenished with fresh adsorbent through the water inlet pipe 262. The discharge pipe 131 at the bottom of the temporary storage tank 130 can discharge the exhausted liquid. After the flue gas comes into contact with the adsorbent in the collection pipe 210, the purified gas is discharged through the exhaust hole 211 at the upper end of the side wall of the collection pipe 210, and then discharged through the exhaust pipe 270 at the upper end of the side wall of the box 200, thus completing the use.

[0043] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A carbon dioxide capture device for flue gas, characterized in that, include: The tank (100) has an air inlet pipe (110) fixedly connected to its side wall for the entry of flue gas. A housing (200) is located on top of a tank (100). A collection pipe (210) is rotatably installed inside the housing (200). An exhaust port (211) is provided at the upper end of the side wall of the collection pipe (210). A bell-shaped part (220) is provided at the bottom of the collection pipe (210). A drainage funnel (230) for mixing flue gas and liquid is provided at the bottom end of the bell-shaped part (220). The side wall of the drainage funnel (230) A spiral groove (231) for guiding flow is provided. A connecting pipe (240) is fixedly connected to the bottom end of the drainage funnel (230). The connecting pipe (240) is connected to the air inlet pipe (110). A shower head (261) for spraying the adsorbed liquid is fixedly connected to the top of the inner cavity of the box (200). The shower head (261) is located at the top of the collection pipe (210). A power component for driving the collection pipe (210) to rotate is provided on the side wall of the box (200). The flue gas enters the connecting pipe (240) through the inlet pipe (110) and is then introduced into the collection pipe (210) through the connecting pipe (240). The power component drives the collection pipe (210) and the drainage funnel (230) to rotate synchronously, which can allow the adsorbent liquid for carbon dioxide capture to flow into the tank (100) through the spiral groove (231). The purified gas is discharged through the exhaust port (211).

2. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, A partition (280) is fixedly connected to the upper end of the inner cavity of the box (200), and the collection pipe (210) passes vertically through the partition (280). The collection pipe (210) is rotatably connected to the partition (280).

3. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, The bell-shaped part (220) is open at both ends, and the inner wall of the bell-shaped part (220) is provided with an arc-shaped part (221). The collecting tube (210), the bell-shaped part (220) and the arc-shaped part (221) are integrally formed of metal.

4. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, The inner cavity of the box (200) is fixedly connected to a protective cylinder (241), the lower end of which extends into the inner cavity of the tank (100).

5. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, The power assembly includes a drive motor (250), which is fixedly connected to the side wall of the housing (200). The power output end of the drive motor (250) passes through the side wall of the housing (200) and is fixedly connected to a second bevel gear (251). The side wall of the collection pipe (210) is fixedly connected to a first bevel gear (212), and the second bevel gear (251) and the first bevel gear (212) are meshed.

6. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, A pump body (260) is fixedly connected to the top of the housing (200), and the output end of the pump body (260) is connected to the input end of the shower head (261).

7. The carbon dioxide capture device in flue gas according to claim 1, characterized in that, An exhaust pipe (270) is fixedly connected to the upper end of the side wall of the housing (200).

8. A carbon dioxide capture device for flue gas according to claim 6, characterized in that, The bottom of the tank (100) is fixedly connected to a flow guide hopper (120), and the bottom of the flow guide hopper (120) is fixedly connected to a temporary storage box (130).

9. A carbon dioxide capture device for flue gas according to claim 8, characterized in that, The side wall of the temporary storage box (130) is connected to a transport pipe (140), and the end of the transport pipe (140) is connected to the input end of the pump body (260).

10. A carbon dioxide capture device for flue gas according to claim 8, characterized in that, One end of the pump body (260) is connected to an inlet pipe (262), and the bottom end of the temporary storage tank (130) is connected to a discharge pipe (131).

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