Carbon dioxide regeneration equipment and carbon capture system

Abstract

The invention provides a carbon dioxide regeneration device and a carbon capture system, the carbon dioxide regeneration device comprises: a regeneration tower, in which a first accommodating cavity for accommodating a semi-barren solution is arranged; the reboiler is arranged on the side of the regeneration tower; the two ends of the first communicating pipeline are communicated with the first containing cavity and the reboiler respectively, and a liquid outlet of the first communicating pipeline is formed in the bottom of the reboiler; and the power part is arranged on the first communicating pipeline and communicates with the first communicating pipeline, and power is provided for the fluid medium in the first communicating pipeline through the power part. The problem that in the prior art, fluid between a regeneration tower and a reboiler is conveyed in a non-kinetic-energy mode, and the continuous flowing effect of the fluid is poor is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon capture, and in particular to a carbon dioxide regeneration device and a carbon capture system. Background Art

[0002] In the carbon capture system, the rich liquid after absorbing carbon dioxide is pumped from the bottom of the absorption tower into the lean-rich liquid heat exchanger. After recovering the heat of the lean liquid, it enters the upper part of the regeneration tower for spraying, and part of the carbon dioxide is desorbed by steam stripping. The semi-lean liquid after steam stripping desorption enters the reboiler to further desorb the carbon dioxide therein. The lean liquid after desorption of carbon dioxide flows out from the bottom of the regeneration tower, and after being cooled by the lean-rich liquid heat exchanger and the lean liquid cooler, it enters the absorption tower for recycling. The back-and-forth circulation of the solvent constitutes a process of continuous absorption and desorption of carbon dioxide.

[0003] There are two ways for the semi-lean liquid in the regeneration tower to enter the reboiler: kinetic and non-kinetic. The active way usually relies on pumps and valves to input the solution into the reboiler, and the non-kinetic device usually uses the thermal siphon effect of pipes or containers to passively perform its function. The thermal siphon effect is a process that uses heating to partially vaporize the liquid to form a vapor-liquid mixture, reduce the density, and use the density difference as a driving force. After the liquid in the siphon heat exchanger is heated, the volume expands, the density becomes smaller and lighter, and it will rise, and the surrounding cold liquid will replenish it, using the density difference between the gas phase and the liquid phase as a driving force for circulation.

[0004] However, the non-kinetic energy delivery method alone is greatly affected by the system pressure, temperature, etc., is prone to fluctuations, and the continuous flow effect of the fluid is poor. Summary of the invention

[0005] The main purpose of the present invention is to provide a carbon dioxide regeneration device and a carbon capture system to solve the problem that the fluid between the regeneration tower and the reboiler in the prior art is transported in a non-kinetic energy manner and the continuous flow effect of the fluid is poor.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a carbon dioxide regeneration device, comprising: a regeneration tower, a first accommodating chamber for accommodating semi-lean liquid is provided in the regeneration tower; a reboiler, arranged on the side of the regeneration tower; a first connecting pipeline, the two ends of the first connecting pipeline are respectively connected to the first accommodating chamber and the reboiler, and the liquid outlet of the first connecting pipeline is arranged at the bottom of the reboiler; a power component, which is arranged on the first connecting pipeline and connected to the first connecting pipeline, and the power component is used to provide power for the fluid medium in the first connecting pipeline.

[0007] Furthermore, a second accommodating chamber is provided in the regeneration tower, and the second accommodating chamber is provided below the first accommodating chamber. The carbon dioxide regeneration equipment also includes: a second connecting pipe, and the two ends of the second connecting pipe are respectively connected to the second accommodating chamber and the reboiler, and the inlet end of the second connecting pipe is provided at the top of the reboiler.

[0008] Furthermore, the carbon dioxide regeneration device also includes: a first flow monitoring component, at least part of which is arranged on the second connecting pipeline to monitor the flow of the fluid medium in the second connecting pipeline; the first flow monitoring component is connected to the power component signal.

[0009] Furthermore, the carbon dioxide regeneration device also includes: a control valve, which is arranged on the second connecting pipeline and connected to the second connecting pipeline, and the flow rate of the fluid medium in the second connecting pipeline is controlled by the control valve; the control valve is signal-connected to the first flow monitoring component.

[0010] Furthermore, the first connecting pipe includes: a first connecting pipe section and a second connecting pipe section that are connected to each other, the liquid inlet of the first connecting pipe section is connected to the first accommodating chamber, and the liquid outlet of the second connecting pipe section is connected to the reboiler; the liquid inlet of the first connecting pipe section and the liquid outlet of the second connecting pipe section are alternately arranged in the horizontal direction, and the liquid outlet is closer to the supporting base surface of the regeneration tower and the reboiler than the liquid inlet.

[0011] Furthermore, the first connecting pipeline also includes: a third connecting pipe section, two ends of the third connecting pipe section are respectively connected to the first connecting pipe section and the second connecting pipe section; and the power component is arranged on the second connecting pipe section.

[0012] Furthermore, the carbon dioxide regeneration device also includes: a second flow monitoring component, which is arranged on the first connecting pipeline, and monitors the flow of the medium in the first connecting pipeline through the second flow monitoring component, and the second flow monitoring component is connected to the power component signal.

[0013] Furthermore, the carbon dioxide regeneration equipment also includes: an exhaust pipe, which is arranged on the regeneration tower, and the exhaust pipe extends from the regeneration tower in a direction away from the regeneration tower, and an internal thread is arranged in the exhaust pipe; an external thread is arranged at the inlet end of the first connecting pipe, and at least a part of the first connecting pipe is threadedly connected to the exhaust pipe; wherein a first sealing component is arranged between the first connecting pipe and the exhaust pipe.

[0014] Furthermore, the carbon dioxide regeneration equipment also includes: an inlet pipe, which is arranged on the regeneration tower, the inlet pipe extends from the regeneration tower in a direction away from the regeneration tower, and an internal thread is arranged in the inlet pipe; an outlet end of the second connecting pipe is provided with an external thread, and at least a part of the second connecting pipe is threadedly connected to the inlet pipe; wherein a second sealing component is arranged between the second connecting pipe and the inlet pipe.

[0015] According to another aspect of the present invention, there is provided a carbon capture system, comprising a carbon dioxide regeneration device, wherein the carbon dioxide regeneration device is the above-mentioned carbon dioxide regeneration device.

[0016] According to the technical solution of the present invention, the carbon dioxide regeneration equipment includes a regeneration tower, a reboiler, a first connecting pipeline and a power component. The regeneration tower is provided with a first accommodating chamber for accommodating semi-lean liquid; the reboiler is arranged on the side of the regeneration tower; the two ends of the first connecting pipeline are respectively connected to the first accommodating chamber and the reboiler, and the liquid outlet of the first connecting pipeline is arranged at the bottom of the reboiler; the power component is arranged on the first connecting pipeline and connected to the first connecting pipeline, and the power component is used to provide power for the fluid medium in the first connecting pipeline. Such an arrangement can use the power component to provide power to the fluid in the first connecting pipeline. When the fluid in the reboiler is affected by the system pressure and temperature, and fluctuations occur, thereby causing the fluid flow rate to slow down and the flow rate to decrease, the power component is turned on, so that the power component cooperates with the reboiler, and the power transmission and non-power transmission cooperate with each other, which solves the problem that the fluid between the regeneration tower and the reboiler in the prior art adopts a non-kinetic energy transmission method, and the continuous flow effect of the fluid is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram showing a first embodiment of a carbon dioxide regeneration device according to the present invention; and

[0019] Figure 2 A structural schematic diagram of a second embodiment of a carbon dioxide regeneration device according to the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. Regeneration tower; 10. First accommodating chamber; 2. Reboiler; 3. First connecting pipeline; 4. Power component; 11. Second accommodating chamber; 5. Second connecting pipeline; 50. First flow monitoring component; 51. Control valve; 31. First connecting pipe section; 32. Second connecting pipe section; 33. Third connecting pipe section; 30. Second flow monitoring component; 12. Discharge pipe; 13. Discharge pipe. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Please refer to Figure 1and Figure 2 The present application provides a carbon dioxide regeneration device, comprising: a regeneration tower 1, wherein a first accommodating chamber 10 for accommodating a semi-lean liquid is provided in the regeneration tower 1; a reboiler 2, which is arranged on the side of the regeneration tower 1; a first connecting pipeline 3, wherein both ends of the first connecting pipeline 3 are respectively connected to the first accommodating chamber 10 and the reboiler 2, and a liquid outlet of the first connecting pipeline 3 is arranged at the bottom of the reboiler 2; a power component 4, which is arranged on the first connecting pipeline 3 and is connected to the first connecting pipeline 3, and power is provided to the fluid medium in the first connecting pipeline 3 through the power component 4.

[0024] The carbon dioxide regeneration device provided by the present application includes a regeneration tower 1, a reboiler 2, a first connecting pipeline 3 and a power component 4. The regeneration tower 1 is provided with a first accommodating chamber 10 for accommodating semi-lean liquid; the reboiler 2 is arranged on the side of the regeneration tower 1; the two ends of the first connecting pipeline 3 are respectively connected to the first accommodating chamber 10 and the reboiler 2, and the liquid outlet of the first connecting pipeline 3 is arranged at the bottom of the reboiler 2; the power component 4 is arranged on the first connecting pipeline 3 and communicated with the first connecting pipeline 3, and the power component 4 is used to provide power for the fluid medium in the first connecting pipeline 3. Such an arrangement can use the power component 4 to provide power to the fluid in the first connecting pipeline 3. When the fluid in the reboiler 2 is affected by the system pressure and temperature, and fluctuates, thereby causing the fluid flow rate to slow down and the flow rate to decrease, the power component 4 is turned on, so that the power component 4 cooperates with the reboiler 2, and the power transmission and non-power transmission cooperate with each other, which solves the problem that the fluid between the regeneration tower and the reboiler in the prior art adopts a non-kinetic energy transmission method, and the continuous flow effect of the fluid is poor.

[0025] Specifically, a second accommodating chamber 11 is provided in the regeneration tower 1, and the second accommodating chamber 11 is provided below the first accommodating chamber 10. The carbon dioxide regeneration device further includes: a second connecting pipe 5, and both ends of the second connecting pipe 5 are respectively connected to the second accommodating chamber 11 and the reboiler 2, and the inlet end of the second connecting pipe 5 is provided at the top of the reboiler 2. After the fluid medium forms a gas-liquid mixed fluid in the reboiler 2, it flows back to the second accommodating chamber 11 through the second connecting pipe 5.

[0026] In the specific implementation process, the carbon dioxide regeneration device further includes: a first flow monitoring component 50, at least part of which is arranged on the second communication pipeline 5 to monitor the flow of the fluid medium in the second communication pipeline 5; the first flow monitoring component 50 is connected to the power component 4 by signal. Preferably, the first flow monitoring component 50 is a first flow monitor, which controls whether the power component 4 is turned on by monitoring the flow of the fluid medium in the second communication pipeline 5. When the flow in the second communication pipeline 5 is less than a predetermined flow threshold, the power component 4 is controlled to be turned on to provide power for the fluid medium in the first communication pipeline 3, thereby increasing the flow in the second communication pipeline 5.

[0027] Furthermore, the carbon dioxide regeneration device further includes: a control valve 51, which is arranged on the second communication pipeline 5 and communicated with the second communication pipeline 5, and the flow rate of the fluid medium in the second communication pipeline 5 is controlled by the control valve 51; the control valve 51 is signal-connected with the first flow monitoring component 50. When it is detected that the flow rate in the second communication pipeline 5 is too large, the opening of the control valve 51 can be reduced, and when it is detected that the flow rate in the second communication pipeline 5 is too small, the control valve 51 is preferentially opened to the maximum opening, and when the flow rate in the second communication pipeline 5 still cannot reach the predetermined flow rate value, the power component 4 is opened.

[0028] In the embodiment provided in the present application, the first connecting pipeline 3 includes: a first connecting pipe section 31 and a second connecting pipe section 32 which are connected to each other, the liquid inlet of the first connecting pipe section 31 is connected to the first accommodating chamber 10, and the liquid outlet of the second connecting pipe section 32 is connected to the reboiler 2; the liquid inlet of the first connecting pipe section 31 and the liquid outlet of the second connecting pipe section 32 are arranged alternately in the horizontal direction, and the liquid outlet is closer to the supporting base surface of the regeneration tower 1 and the reboiler 2 than the liquid inlet. The supporting base surface can be the ground or a tooling plate, etc., which is used to support the regeneration tower and the reboiler. By placing the liquid outlet closer to the supporting base surface than the liquid inlet, the fluid medium can flow into the reboiler 2 with the help of the liquid level pressure difference.

[0029] In order to avoid the angle (acute angle or obtuse angle) between the first connecting pipe section 31 and the second connecting pipe section 32, so as to prevent the fluid medium from easily causing air blockage during the circulation process, the first connecting pipe 3 also includes: a third connecting pipe section 33, the two ends of which are respectively connected to the first connecting pipe section 31 and the second connecting pipe section 32; and the power component 4 is arranged on the second connecting pipe section 32. In this way, the first connecting pipe section 31, the third connecting pipe section 33 and the second connecting pipe section 32 are in a broken line trajectory, and the extension direction of the first connecting pipe section 31 and the extension direction of the second connecting pipe section 32 are respectively perpendicular to the extension direction of the third connecting pipe section 33.

[0030] Further, the carbon dioxide regeneration device further includes: a second flow monitoring component 30, which is arranged on the first connecting pipeline 3, and the flow of the medium in the first connecting pipeline 3 is monitored by the second flow monitoring component 30, and the second flow monitoring component 30 is signal-connected with the power component 4. When the flow in the second connecting pipeline 5 is in a normal state, but the flow in the first connecting pipeline 3 decreases, the power component 4 is turned on, and preferably, the second flow monitoring component 30 is a flow monitor.

[0031] In another embodiment provided in the present application, the carbon dioxide regeneration device further includes: a discharge pipe 12, which is arranged on the regeneration tower 1, and the discharge pipe 12 extends from the regeneration tower 1 toward a direction away from the regeneration tower 1, and an internal thread is arranged in the discharge pipe 12; an external thread is arranged at the inlet end of the first connecting pipe 3, and at least a part of the first connecting pipe 3 is threadedly connected to the discharge pipe 12; wherein a first sealing component is arranged between the first connecting pipe 3 and the discharge pipe 12. Preferably, the discharge pipe 12 is fixedly connected to the regeneration tower 1 (such as welding or integral molding), and the first connecting pipe 3 is threadedly connected to the discharge pipe 12 to facilitate the disassembly and assembly of the first connecting pipe 3, so that when the first connecting pipe 3 is blocked or damaged, it is convenient to replace the first connecting pipe 3.

[0032] In addition, the carbon dioxide regeneration device further includes: a discharge pipe 13, which is arranged on the regeneration tower 1, and the discharge pipe 13 extends from the regeneration tower 1 toward a direction away from the regeneration tower 1, and an internal thread is arranged in the discharge pipe 13; the outlet end of the second connecting pipe 5 is provided with an external thread, and at least part of the second connecting pipe 5 is threadedly connected to the discharge pipe 13; wherein a second sealing component is arranged between the second connecting pipe 5 and the discharge pipe 13. Preferably, the discharge pipe 13 is fixedly connected to the regeneration tower 1 (such as welding or integral molding), and the second connecting pipe 5 is threadedly connected to the discharge pipe 13 to facilitate the disassembly and assembly of the second connecting pipe 5, so that when the second connecting pipe 5 is blocked or damaged, it is convenient to replace the second connecting pipe 5. Wherein, the regeneration tower 1 is sealed by the first sealing component and the second sealing component to prevent the fluid medium from overflowing. Preferably, the first sealing component and the second sealing component are sealing gaskets.

[0033] The present application also provides a carbon capture system, including a carbon dioxide regeneration device, and the carbon dioxide regeneration device is the carbon dioxide regeneration device of the above embodiment.

[0034] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0035] The carbon dioxide regeneration device provided by the present application includes a regeneration tower 1, a reboiler 2, a first connecting pipeline 3 and a power component 4. The regeneration tower 1 is provided with a first accommodating chamber 10 for accommodating semi-lean liquid; the reboiler 2 is arranged on the side of the regeneration tower 1; the two ends of the first connecting pipeline 3 are respectively connected to the first accommodating chamber 10 and the reboiler 2, and the liquid outlet of the first connecting pipeline 3 is arranged at the bottom of the reboiler 2; the power component 4 is arranged on the first connecting pipeline 3 and communicated with the first connecting pipeline 3, and the power component 4 is used to provide power for the fluid medium in the first connecting pipeline 3. Such an arrangement can use the power component 4 to provide power to the fluid in the first connecting pipeline 3. When the fluid in the reboiler 2 is affected by the system pressure and temperature, and fluctuates, thereby causing the fluid flow rate to slow down and the flow rate to decrease, the power component 4 is turned on, so that the power component 4 cooperates with the reboiler 2, and the power transmission and non-power transmission cooperate with each other, which solves the problem that the fluid between the regeneration tower and the reboiler in the prior art adopts a non-kinetic energy transmission method, and the continuous flow effect of the fluid is poor.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carbon dioxide regeneration device, characterized in that: include: A regeneration tower (1), wherein the regeneration tower (1) is provided with a first accommodating chamber (10) for accommodating semi-lean liquid; A reboiler (2) is arranged on the side of the regeneration tower (1); a first connecting pipeline (3), wherein two ends of the first connecting pipeline (3) are respectively connected to the first accommodating chamber (10) and the reboiler (2), and a liquid outlet of the first connecting pipeline (3) is arranged at the bottom of the reboiler (2); A power component (4) is arranged on the first communicating pipeline (3) and is in communication with the first communicating pipeline (3), and provides power to the fluid medium in the first communicating pipeline (3) through the power component (4).

2. The carbon dioxide regeneration equipment according to claim 1, characterized in that: The regeneration tower (1) is provided with a second accommodating chamber (11), and the second accommodating chamber (11) is arranged below the first accommodating chamber (10). The carbon dioxide regeneration equipment further comprises: A second connecting pipe (5), the two ends of which are respectively connected to the second accommodating chamber (11) and the reboiler (2), and the inlet end of the second connecting pipe (5) is arranged at the top of the reboiler (2).

3. The carbon dioxide regeneration equipment according to claim 2, characterized in that: The carbon dioxide regeneration equipment also includes: a first flow monitoring component (50), at least a portion of which is arranged on the second communicating pipeline (5) to monitor the flow of the fluid medium in the second communicating pipeline (5); The first flow monitoring component (50) is signal-connected to the power component (4).

4. The carbon dioxide regeneration equipment according to claim 3, characterized in that: The carbon dioxide regeneration equipment also includes: a control valve (51), which is arranged on the second communicating pipeline (5) and is in communication with the second communicating pipeline (5), and controls the flow rate of the fluid medium in the second communicating pipeline (5) through the control valve (51); The control valve (51) is signal-connected to the first flow monitoring component (50).

5. The carbon dioxide regeneration equipment according to claim 1, characterized in that: The first connecting pipeline (3) comprises: a first communicating pipe section (31) and a second communicating pipe section (32) which are connected to each other, wherein the liquid inlet of the first communicating pipe section (31) is connected to the first accommodating chamber (10), and the liquid outlet of the second communicating pipe section (32) is connected to the reboiler (2); The liquid inlet of the first connecting pipe section (31) and the liquid outlet of the second connecting pipe section (32) are arranged alternately in the horizontal direction, and the liquid outlet is closer to the supporting base surface of the regeneration tower (1) and the reboiler (2) than the liquid inlet.

6. The carbon dioxide regeneration equipment according to claim 5, characterized in that: The first connecting pipeline (3) further comprises: a third connecting pipe section (33), wherein two ends of the third connecting pipe section (33) are respectively connected to the first connecting pipe section (31) and the second connecting pipe section (32); The power component (4) is arranged on the second connecting pipe section (32).

7. The carbon dioxide regeneration equipment according to claim 1, characterized in that: The carbon dioxide regeneration equipment also includes: A second flow monitoring component (30) is arranged on the first connecting pipeline (3), and the flow of the medium in the first connecting pipeline (3) is monitored by the second flow monitoring component (30). The second flow monitoring component (30) is signal-connected to the power component (4).

8. The carbon dioxide regeneration equipment according to claim 1, characterized in that: The carbon dioxide regeneration equipment also includes: A discharge pipe (12) is arranged on the regeneration tower (1), the discharge pipe (12) extends from the regeneration tower (1) in a direction away from the regeneration tower (1), and an internal thread is arranged in the discharge pipe (12); The inlet end of the first connecting pipeline (3) is provided with an external thread, and at least a portion of the first connecting pipeline (3) is threadedly connected to the discharge pipeline (12); Wherein, a first sealing component is provided between the first connecting pipeline (3) and the discharge pipeline (12).

9. The carbon dioxide regeneration equipment according to claim 2, characterized in that: The carbon dioxide regeneration equipment also includes: A discharge pipe (13) is arranged on the regeneration tower (1), the discharge pipe (13) extends from the regeneration tower (1) in a direction away from the regeneration tower (1), and an internal thread is arranged in the discharge pipe (13); The outlet end of the second connecting pipeline (5) is provided with an external thread, and at least a portion of the second connecting pipeline (5) is threadedly connected to the discharge pipe (13); Wherein, a second sealing component is provided between the second connecting pipeline (5) and the discharge pipe (13).

10. A carbon capture system comprising a carbon dioxide regeneration device, characterized in that: The carbon dioxide regeneration device is the carbon dioxide regeneration device according to any one of claims 1 to 9.

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