Carbon dioxide trapping system based on solar energy

Abstract

The carbon dioxide trapping system based on solar energy comprises an absorption tower which is provided with a first inlet, a first outlet, a second inlet and a second outlet; the desorption tower is provided with a third inlet, a third outlet, a fourth inlet, a fourth outlet and a fifth outlet; an inlet of the first pipeline is communicated with the fourth outlet, an outlet of the first pipeline is communicated with the fourth inlet, and a first pump body is arranged on the first pipeline; the reboiler is used for heating the liquid in the first pipeline; the solar heat collector comprises a light gathering piece, the light gathering piece is used for gathering sunlight, the sunlight gathered by the light gathering piece serves as a heat source of the reboiler, the light gathering piece is arranged on at least one of the absorption tower, the desorption tower and the solar installation frame, and the solar installation frame, the absorption tower and the desorption tower are arranged at intervals. Therefore, the carbon dioxide trapping system based on the solar energy has the advantages of reducing energy consumption and saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide recovery, and particularly relates to a solar-based carbon dioxide capture system. Background Art

[0002] A reboiler (also known as a re-heater) is a heating device mainly used to vaporize a liquid again in an industrial process. Its basic function is to transfer heat energy to the liquid entering it through heat exchange, causing partial evaporation of the liquid to form steam. This device is commonly found in the chemical industry and petroleum refining processes, especially when used in conjunction with a distillation column to heat the bottom liquid of the column, prompting volatile components to become steam and rise, thereby achieving the purpose of component separation. The structure of a reboiler is similar to that of a condenser, but its function is opposite; it heats rather than cools. It can be directly installed at the bottom of the distillation column or located outside the column and connected to the column through a siphon and a conduit. The heating medium can be steam, hot water, or other heat sources, depending on the specific process requirements. The design of the reboiler ensures effective heat transfer and often has a certain vaporization space to enable partial conversion of the liquid into steam. In related technologies, in the carbon dioxide capture system of a power plant, a reboiler needs to be installed on the desorption tower. The reboiler needs to consume steam to heat the rich liquid in the desorption tower, thereby improving the desorption and regeneration effect of the rich liquid, consuming a large amount of extraction steam, and having a large energy consumption. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related technologies to some extent. For this purpose, an embodiment of the present invention provides a solar-based carbon dioxide capture system.

[0004] The solar-based carbon dioxide capture system according to the embodiment of the present invention includes:

[0005] An absorption tower having a first inlet, a first outlet, a second inlet, and a second outlet. The first outlet, the first inlet, the second inlet, and the second outlet are arranged in sequence from bottom to top. The first inlet is used for introducing a gas containing carbon dioxide. The first outlet is located at the bottom of the absorption tower and is used for discharging carbon dioxide-rich liquid. The second outlet is located at the top of the absorption tower and is used for discharging gas;

[0006] A desorption tower having a third inlet, a third outlet, a fourth inlet, a fourth outlet, and a fifth outlet. The third inlet is communicated with the first outlet. The third outlet is located at the top of the desorption tower and is used for discharging carbon dioxide gas. The fifth outlet is communicated with the second inlet;

[0007] A first pipeline, the inlet of the first pipeline is communicated with the fourth outlet, the outlet of the first pipeline is communicated with the fourth inlet, and a first pump body is provided on the first pipeline;

[0008] A reboiler, which is used to heat the liquid in the first pipeline;

[0009] A solar collector, which includes a light concentrating member for concentrating sunlight. The sunlight concentrated by the light concentrating member serves as the heat source for the reboiler. The light concentrating member is provided on at least one of the absorption tower, the desorption tower, and the solar mounting frame, and the solar mounting frame is spaced apart from the absorption tower and the desorption tower.

[0010] Therefore, the solar-based carbon dioxide capture system according to the embodiments of the present invention has the advantages of reducing energy consumption and saving energy.

[0011] In some embodiments, the solar collector includes a heat collecting part and the light concentrating member. The light concentrating member is used to concentrate light on the heat collecting part to increase the temperature of the fluid in the heat collecting part. The hot fluid discharged from the heat collecting part can be introduced into the reboiler through a second pipeline, and the fluid discharged from the reboiler can be introduced into the heat collecting part through a third pipeline.

[0012] In some embodiments, there is at least one light concentrating member, and at least one of the absorption tower, the desorption tower, and the solar mounting frame is connected to at least one light concentrating member through an adjusting frame, and the adjusting frame can adjust the light concentrating direction of the connected light concentrating member;

[0013] And / or, there is at least one heat collecting part, and at least one heat collecting part is movably provided on a moving frame, and a driving part on the moving frame can drive the heat collecting part to move.

[0014] In some embodiments, the absorption tower and the desorption tower are spaced apart in a first horizontal direction,

[0015] At least one light concentrating member is provided on the outer peripheral surface of the tower body of the absorption tower on the side facing the desorption tower in the first horizontal direction;

[0016] At least one light concentrating member is provided on the outer peripheral surface of the tower body of the desorption tower on the side facing the absorption tower in the first horizontal direction;

[0017] At least one heat collecting part is located between the absorption tower and the desorption tower in the first horizontal direction.

[0018] In some embodiments, the absorption tower and the desorption tower are spaced apart in a first horizontal direction, and at least one heat collecting part is spaced apart from the absorption tower and the desorption tower in a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction;

[0019] On the outer peripheral surface of the tower body of each of the absorption tower and the desorption tower, at least one of the condenser elements is provided on the side facing the heat collection part in the second horizontal direction.

[0020] In some embodiments, the condenser elements on the absorption tower and the desorption tower are both dish-shaped reflectors. The dish-shaped reflectors have concave surfaces facing the heat collection part, and the absorption tower and the desorption tower are both connected to the dish-shaped reflectors through the adjustment brackets.

[0021] In some embodiments, at least one of the heat collection parts is provided on the shell of the reboiler.

[0022] In some embodiments, the condenser element includes at least one of a reflector and a lens;

[0023] The heat collection part includes at least one of a flat plate type heat collection tube and a vacuum tube type heat collection tube.

[0024] In some embodiments, the reboiler is communicated with a steam heat source through a sixth pipeline;

[0025] The first outlet is communicated with the inlet of the two-phase separator. The rich liquid outlet of the two-phase separator is communicated with the third inlet through a fourth pipeline, and the lean liquid outlet of the two-phase separator is communicated with the second inlet;

[0026] The fifth outlet is communicated with the second inlet through a fifth pipeline. The fifth pipeline and the fourth pipeline exchange heat through a heat exchanger. A cooler is provided on the fifth pipeline, and the cooler is located between the second inlet and the heat exchanger.

[0027] In some embodiments, the outer peripheral contours of the tower bodies of the absorption tower and the desorption tower are rectangular. Description of the Drawings

[0028] Figure 1 is a schematic diagram of a solar-based carbon dioxide capture system according to an embodiment of the present invention.

[0029] Figure 2 is a schematic diagram of a solar-based carbon dioxide capture system according to an embodiment of the present invention.

[0030] Figure 3 is a schematic diagram of a solar-based carbon dioxide capture system according to an embodiment of the present invention.

[0031] Reference Signs:

[0032] 1. Absorption tower, 11. First inlet, 12. First outlet, 13. Second inlet, 14. Second outlet;

[0033] 2. Desorption Tower, 21. Third Inlet, 22. Third Outlet, 23. Fourth Inlet, 24. Fourth Outlet, 25. Fifth Outlet;

[0034] 3. Reboiler, 31. First Pump Body;

[0035] 4. Condensing Element;

[0036] 5. Heat Collection Part;

[0037] 6. Two - phase Separator;

[0038] 7. Heat Exchanger;

[0039] 8. Cooler;

[0040] 91. First Pipeline, 92. Second Pipeline, 93. Third Pipeline, 94. Fourth Pipeline, 95. Fifth Pipeline. Detailed Embodiment

[0041] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] The solar - based carbon dioxide capture system according to an embodiment of the present invention will be described below with reference to the accompanying drawings. As Figures 1 to 3 shown, the solar - based carbon dioxide capture system according to an embodiment of the present invention includes an absorption tower 1, a desorption tower 2, a first pipeline 91, a reboiler 3, and a solar collector.

[0043] The absorption tower 1 has a first inlet 11, a first outlet 12, a second inlet 13 and a second outlet 14. The first outlet 12, the first inlet 11, the second inlet 13 and the second outlet 14 are arranged in sequence from bottom to top. The first inlet 11 is used for introducing a gas containing carbon dioxide. The first outlet 12 is located at the bottom of the absorption tower 1 and is used for discharging the carbon dioxide-rich liquid. The second outlet 14 is located at the top of the absorption tower 1 and is used for discharging the gas. The desorption tower 2 has a third inlet 21, a third outlet 22, a fourth inlet 23, a fourth outlet 24 and a fifth outlet 25. The third inlet 21 is communicated with the first outlet 12. The third outlet 22 is located at the top of the desorption tower 2 and is used for discharging the carbon dioxide gas. The fifth outlet 25 is communicated with the second inlet 13. Thus, the gas containing carbon dioxide can enter the absorption tower 1, and the gas after the absorption reaction is discharged from the second outlet 14 at the top of the absorption tower 1; the carbon dioxide-rich liquid formed after the absorption reaction is discharged from the first outlet 12 at the bottom of the absorption tower 1. The carbon dioxide-rich liquid discharged from the first outlet 12 can be introduced into the desorption tower 2 through the third inlet 21 to absorb heat and desorb the carbon dioxide gas, and the carbon dioxide gas can be discharged from the third outlet 22 at the top of the desorption tower 2. The lean liquid discharged from the fifth outlet 25 at the bottom of the desorption tower 2 can be introduced into the absorption tower 1 again through the second inlet 13.

[0044] The inlet of the first pipeline 91 is communicated with the fourth outlet 24, the outlet of the first pipeline 91 is communicated with the fourth inlet 23, and a first pump body 31 is arranged on the first pipeline 91. The reboiler 3 is used for heating the liquid in the first pipeline 91. Specifically, the fifth outlet 25, the fourth outlet 24, the fourth inlet 23 and the third outlet 22 are arranged in sequence from bottom to top. The liquid in the desorption tower 2 is introduced into the first pipeline 91 and heated by the reboiler 3 to separate out the carbon dioxide, and then introduced into the desorption tower 2 again.

[0045] The solar collector includes a light concentrating member 4. The light concentrating member 4 is used for concentrating sunlight. The sunlight concentrated by the light concentrating member 4 is used as the heat source of the reboiler 3. The light concentrating member 4 is arranged on at least one of the absorption tower 1, the desorption tower 2 and the solar mounting frame. The solar mounting frame is arranged at an interval from the absorption tower 1 and the desorption tower 2. Specifically, the solar mounting frame can be arranged on the open ground, and the light concentrating member 4 can be arranged on the solar mounting frame. Alternatively, the light concentrating member 4 can be arranged on at least one of the absorption tower 1 and the desorption tower 2, so as to use the sunlight concentrated by the light concentrating member 4 as the heat source of the reboiler 3, thereby reducing the thermal energy consumed by the reboiler 3. And since the light concentrating member 4 is arranged on at least one of the absorption tower 1, the desorption tower 2 and the solar mounting frame, the number of the light concentrating members 4 can be increased, so as to increase the available thermal energy and also reduce the floor space.

[0046] Therefore, the solar-based carbon dioxide capture system according to the embodiment of the present invention has the advantages of reducing energy consumption and saving energy.

[0047] In some embodiments, the reboiler 3 is connected to the steam heat source through the sixth pipeline. Thus, when the solar collector cannot provide sufficient heat source, the steam in the steam heat source can be introduced into the reboiler 3 to provide sufficient heat for the reboiler 3.

[0048] As Figure 1 shown, in some embodiments, the first outlet 12 is connected to the inlet of the two-phase separator 6. The rich liquid outlet of the two-phase separator 6 is connected to the third inlet 21 through the fourth pipeline 94, and the lean liquid outlet of the two-phase separator 6 is connected to the second inlet 13. The fifth outlet 25 is connected to the second inlet 13 through the fifth pipeline 95. The fifth pipeline 95 and the fourth pipeline 94 exchange heat through the heat exchanger 7. A cooler 8 is provided on the fifth pipeline 95, and the cooler 8 is located between the second inlet 13 and the heat exchanger 7. Thus, the rich liquid introduced into the fourth pipeline 94 from the rich liquid outlet of the two-phase separator 6 can be heated by the heat exchanger 7 to increase the temperature of the rich liquid introduced into the desorption tower 2, thereby facilitating the generation of carbon dioxide. The lean liquid introduced into the fifth pipeline 95 from the fifth outlet 25 can be cooled by the heat exchanger 7 and the cooler 8 in sequence, so that the lean liquid introduced into the absorption tower 1 is convenient for absorbing carbon dioxide.

[0049] As Figure 3 shown, the outer peripheral contours of the tower bodies of the absorption tower 1 and the desorption tower 2 are rectangular, whereby it is convenient to arrange the condensing member 4 on the outer peripheral side surfaces of the tower bodies of the absorption tower 1 and the desorption tower 2. Each tower body of the absorption tower 1 and the desorption tower 2 has a peripheral side surface perpendicular to the first horizontal direction and the second horizontal direction. For example, each tower body of the absorption tower 1 and the desorption tower 2 has a peripheral side surface perpendicular to the front-back direction and the left-right direction.

[0050] As Figure 2 shown, in some embodiments, the solar collector includes a heat collection part 5 and a condensing member 4. The condensing member 4 is used to concentrate light on the heat collection part 5 to increase the temperature of the fluid in the heat collection part 5. The hot fluid discharged from the heat collection part 5 can be introduced into the reboiler 3 through the second pipeline 92, and the fluid discharged from the reboiler 3 can be introduced into the heat collection part 5 through the third pipeline 93. Thus, the heat collection part 5 and the reboiler 3 can perform fluid circulation through the second pipeline 92 and the third pipeline 93, so that the hot fluid in the heat collection part 5 can provide a heat source for the reboiler 3. For example, pump bodies are provided on both the second pipeline 92 and the third pipeline 93. The fluid discharged from the reboiler 3 is introduced into the water tank, and the water in the water tank can be introduced into the heat collection part 5 through the pump body.

[0051] In some embodiments, there is at least one condenser 4, and at least one of the absorption tower 1, the desorption tower 2 and the solar mounting frame is connected to at least one condenser 4 through an adjustment frame, and the adjustment frame can adjust the light-condensing direction of the condenser 4 connected thereto; and / or, there is at least one heat collection part 5, and at least one heat collection part 5 is movably arranged on a moving frame, and a driving part on the moving frame can drive the heat collection part 5 to move. That is to say, at least one of the condenser 4 and the heat collection part 5 is movable so that the condenser 4 can concentrate light on the heat collection part 5.

[0052] As Figure 2 and Figure 3 As shown, in some embodiments, the absorption tower 1 and the desorption tower 2 are arranged at intervals in the first horizontal direction, and at least one condenser 4 is arranged on the outer peripheral surface of the tower body of the absorption tower 1 on the side facing the desorption tower 2 in the first horizontal direction, and at least one condenser 4 is arranged on the outer peripheral surface of the tower body of the desorption tower 2 on the side facing the absorption tower 1 in the first horizontal direction.

[0053] At least one heat collection part 5 is located between the absorption tower 1 and the desorption tower 2 in the first horizontal direction. That is to say, condensers 4 are arranged on both the absorption tower 1 and the desorption tower 2, and the condensers 4 are arranged on the opposite surfaces of the absorption tower 1 and the desorption tower 2, and at least one heat collection part 5 is located between the absorption tower 1 and the desorption tower 2 in the first horizontal direction. So as to heat the fluid in the at least one heat collection part 5. The first horizontal direction can be the left-right direction, the up-down direction, the left-right direction and the front-back direction as shown by the arrows in the figure. For example, the absorption tower 1 is located on the left side of the desorption tower 2, condensers 4 are arranged on the right side surface of the absorption tower 1 and the left side surface of the desorption tower 2, and at least one heat collection part 5 is located between the absorption tower 1 and the desorption tower 2 in the left-right direction.

[0054] As Figure 3 As shown, in some embodiments, the absorption tower 1 and the desorption tower 2 are arranged at intervals in the first horizontal direction, and at least one heat collection part 5 is arranged at intervals from the absorption tower 1 and the desorption tower 2 in the second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction. At least one condenser 4 is arranged on the outer peripheral surface of the tower body of each of the absorption tower 1 and the desorption tower 2 on the side facing the heat collection part 5 in the second horizontal direction. The second horizontal direction can be the front-back direction. For example, heat collection parts 5 are arranged on the front and back sides of the absorption tower 1 and the desorption tower 2, and condensers 4 facing the corresponding heat collection parts 5 are arranged on the front and back side surfaces of the absorption tower 1 and the desorption tower 2.

[0055] In some embodiments, the condensers 4 on the absorption tower 1 and the desorption tower 2 are both dish-shaped reflectors, the dish-shaped reflectors have concave surfaces facing the (corresponding) heat collection parts 5, and the absorption tower 1 and the desorption tower 2 are both connected to the dish-shaped reflectors through adjustment frames. Thus, the reflection angle of the dish-shaped reflector can be changed through the adjustment frame.

[0056] In some embodiments, at least one heat collection part 5 is provided on the housing of the reboiler 3. Specifically, there may be multiple heat collection parts 5, and at least one heat collection part 5 is provided on the housing of the reboiler 3 to reduce heat loss. For example, the reboiler 3 is located between the absorption tower 1 and the desorption tower 2 in the first horizontal direction (left - right direction).

[0057] In some embodiments, the condensing member 4 includes at least one of a reflector and a lens. For example, there are multiple solar mounts and they are provided on the periphery of the corresponding heat collection part 5. A combined condensing element (a component of a reflector and a lens) can be arranged on the solar mount. The lens is used for preliminary focusing first, and then the reflector is used for further focusing to achieve a higher condensation ratio.

[0058] In some embodiments, the heat collection part 5 includes at least one of a flat - plate type heat collection tube and a vacuum - tube type heat collection tube. For example, the heat collection part 5 is a flat - plate type heat collection tube to increase the heat - receiving area.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0063] In the present invention, the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0064] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present invention.

Claims

1. A solar-based carbon dioxide capture system, characterized in that, Comprising: An absorption tower having a first inlet, a first outlet, a second inlet, and a second outlet, wherein the first outlet, the first inlet, the second inlet, and the second outlet are arranged in sequence from bottom to top. The first inlet is for introducing a gas containing carbon dioxide. The first outlet is located at the bottom of the absorption tower and is for discharging a carbon dioxide-rich liquid. The second outlet is located at the top of the absorption tower and is for discharging a gas; A desorption tower having a third inlet, a third outlet, a fourth inlet, a fourth outlet, and a fifth outlet. The third inlet is in communication with the first outlet. The third outlet is located at the top of the desorption tower and is for discharging carbon dioxide gas. The fifth outlet is in communication with the second inlet; A first pipeline, the inlet of the first pipeline is in communication with the fourth outlet, the outlet of the first pipeline is in communication with the fourth inlet, and a first pump body is provided on the first pipeline; A reboiler for heating the liquid in the first pipeline; A solar collector, the solar collector includes a light concentrating member for concentrating sunlight, and the sunlight concentrated by the light concentrating member serves as the heat source of the reboiler. The light concentrating member is provided on at least one of the absorption tower, the desorption tower, and a solar mounting frame, and the solar mounting frame is spaced apart from the absorption tower and the desorption tower.

2. The carbon dioxide capture system based on solar energy according to claim 1, wherein The solar collector includes a heat collecting part and the light concentrating member. The light concentrating member is for concentrating light on the heat collecting part to increase the temperature of the fluid in the heat collecting part. The hot fluid discharged from the heat collecting part can be introduced into the reboiler through a second pipeline, and the fluid discharged from the reboiler can be introduced into the heat collecting part through a third pipeline.

3. The solar-based carbon dioxide capture system according to claim 2, wherein The light concentrating member is at least one, and at least one of the absorption tower, the desorption tower, and the solar mounting frame is connected to at least one of the light concentrating members through an adjusting frame, and the adjusting frame can adjust the light concentrating direction of the light concentrating member connected thereto; And / or, the heat collecting part is at least one, and at least one of the heat collecting parts is movably provided on a moving frame, and a driving part on the moving frame can drive the heat collecting part to move.

4. The solar-based carbon dioxide capture system according to claim 3, wherein The absorption tower and the desorption tower are spaced apart in a first horizontal direction; At least one of the light concentrating members is provided on the outer peripheral surface of the tower body of the absorption tower on the side facing the desorption tower in the first horizontal direction; At least one of the light concentrating members is provided on the outer peripheral surface of the tower body of the desorption tower on the side facing the absorption tower in the first horizontal direction; At least one of the heat collecting parts is located between the absorption tower and the desorption tower in the first horizontal direction.

5. The solar-based carbon dioxide capture system according to claim 3, wherein The absorption tower and the desorption tower are spaced apart in a first horizontal direction, and at least one of the heat collecting parts is spaced apart from the absorption tower and the desorption tower in a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction; On the outer peripheral surface of the tower body of each of the absorption tower and the desorption tower, at least one of the condenser elements is provided on the side facing the heat collection part in the second horizontal direction.

6. The solar-based carbon dioxide capture system according to claim 4 or 5, characterized in that, The condenser elements on the absorption tower and the desorption tower are both dish reflectors, the dish reflectors have concave surfaces facing the heat collection part, and the absorption tower and the desorption tower are both connected to the dish reflectors through the adjustment frames.

7. The solar-based carbon dioxide capture system according to claim 2, wherein At least one of the heat collection parts is provided on the shell of the reboiler.

8. The solar-based carbon dioxide capture system according to claim 1, wherein The condenser element includes at least one of a reflector and a lens; The heat collection part includes at least one of a flat plate type heat collection tube and a vacuum tube type heat collection tube.

9. The solar-based carbon dioxide capture system according to claim 1, wherein The reboiler is communicated with a steam heat source through a sixth pipeline; The first outlet is communicated with the inlet of the two-phase separator, the rich liquid outlet of the two-phase separator is communicated with the third inlet through a fourth pipeline, and the lean liquid outlet of the two-phase separator is communicated with the second inlet; The fifth outlet is communicated with the second inlet through a fifth pipeline, the fifth pipeline and the fourth pipeline exchange heat through a heat exchanger, and a cooler is provided on the fifth pipeline, and the cooler is located between the second inlet and the heat exchanger.

10. The solar-based carbon dioxide capture system according to claim 1, characterized in that, The outer peripheral contours of the tower bodies of the absorption tower and the desorption tower are rectangular.

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