Heat exchanger and absorption column

Abstract

The present application relates to the technical field of flue gas waste energy recovery, and particularly relates to a heat exchange device and an absorption tower, the heat exchange device comprising a heat exchange assembly and a connecting assembly, the heat exchange assembly being arranged in the absorption tower, the heat exchange assembly comprising at least one heat exchange component, the heat exchange component comprising at least two heat exchange pipes, the heat exchange pipes being arranged at intervals in the extension direction of the absorption tower, the heat exchange pipes being arranged in a spiral in the radial direction of the absorption tower, the connecting assembly comprising at least one connecting component, the connecting component comprising an inlet pipe and an outlet pipe arranged at intervals in the radial direction of the absorption tower and at least one connecting pipe, one end of the inlet pipe extending into the absorption tower and being connected to one end of one of the heat exchange pipes, one end of the outlet pipe extending into the absorption tower and being connected to one end of another heat exchange pipe, one end of the connecting pipe being connected to the other end of one of the heat exchange pipes, and the other end of the connecting pipe being connected to the other end of another heat exchange pipe, the heat exchange device of the present application can improve the absorption efficiency of the solution.

Description

Technical Field

[0001] This invention relates to the field of flue gas waste energy recovery technology, specifically to a heat exchange device and an absorption tower. Background Technology

[0002] In related technologies for flue gas waste energy recovery, a common approach is to bring a low-temperature solution into counter-current contact with the flue gas inside an absorption tower. The latent heat generated by the flue gas is transferred to the low-temperature solution, which is then heated by the flue gas and flows out from the bottom of the absorption tower. The outflowing high-temperature solution then exchanges heat with a heat exchanger, completing the recovery and reuse of the flue gas waste energy. However, the heat absorption capacity of the solution is limited. As the solution continuously absorbs heat within the absorption tower, the temperature of the solution near the bottom of the tower rises, affecting the absorption process and thus reducing the absorption efficiency. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a heat exchange device that can improve the absorption efficiency of a solution.

[0004] An absorption tower is also proposed in this embodiment of the invention.

[0005] The heat exchange device of this invention includes: a heat exchange assembly adapted to be installed inside an absorption tower, the heat exchange assembly including at least one heat exchange component, the at least one heat exchange component including at least two heat exchange tubes, the at least two heat exchange tubes being arranged at intervals in the extending direction of the absorption tower, the heat exchange tubes being spirally arranged in the radial direction of the absorption tower; and a connecting assembly including at least one connecting component, the at least one connecting component including an inlet pipe, an outlet pipe and at least one connecting pipe, the inlet pipe and the outlet pipe being arranged at intervals in the radial direction of the absorption tower, one end of the inlet pipe extending at least partially into the absorption tower and connected to one end of one of the heat exchange tubes, one end of the outlet pipe extending at least partially into the absorption tower and connected to one end of another heat exchange tube, one end of the connecting pipe being connected to the other end of one of the heat exchange tubes, and the other end of the connecting pipe being connected to the other end of the other heat exchange tube.

[0006] The heat exchange device of this invention can improve the absorption efficiency of the solution.

[0007] In some embodiments, the heat exchange assembly includes a plurality of heat exchange components, which are spaced apart in the extension direction of the absorption tower, and the number of connecting components is plurality of, with each connecting component corresponding to and cooperating with each heat exchange component.

[0008] In some embodiments, the connecting pipe is an arc-shaped connecting pipe, or the connecting pipe includes a first connecting pipe and a second connecting pipe connected in sequence, wherein the first connecting pipe is a first arc segment, the second connecting pipe is a second arc segment, and the bending direction of the second arc segment is different from that of the first arc segment.

[0009] In some embodiments, the connecting pipe is arranged near the inner wall of the absorption tower and connected to one end of the heat exchange tube near the inner wall of the absorption tower; or, the connecting pipe is arranged away from the inner wall of the absorption tower and connected to one end of the heat exchange tube away from the inner wall of the absorption tower.

[0010] In some embodiments, the flow direction of the heat exchange medium in the connecting pipe is opposite to the flow direction of the absorption solution in the absorption tower, so that the absorption solution and the heat exchange medium can exchange heat.

[0011] In some embodiments, the heat exchange device further includes a support assembly, which includes a first support member and a second support member. The first support member and the second support member are arranged at a distance from each other in the extension direction of the absorption tower. The first support member is connected to the absorption tower. One end of the heat exchange assembly is connected to the first support member, and the other end of the heat exchange assembly is connected to the second support member.

[0012] In some embodiments, the support assembly further includes a support column, one end of which is connected to the first support member and the other end of which is connected to the second support column.

[0013] In some embodiments, the support assembly further includes a support plate disposed inside the absorption tower and extending along the extension direction of the absorption tower. The support plate is connected to the support column. A support hole is provided on the support plate, penetrating the support plate along its thickness direction. The support hole cooperates with the heat exchange tube to support the heat exchange tube.

[0014] In some embodiments, the number of support holes is multiple, and the multiple support holes are distributed in a matrix on the support plate, and / or the number of support plates is multiple, and the multiple support plates are arranged at intervals along the circumference of the absorption tower.

[0015] The absorption tower of this invention includes: an absorption tower body, the absorption tower body including a plurality of absorption sections arranged at intervals in the extending direction of the absorption tower; and a heat exchange device, the heat exchange device being the heat exchange device described in the above embodiment, the heat exchange device being disposed in the absorption section.

[0016] The absorption tower of this invention can improve the performance of the absorption tower. Attached Figure Description

[0017] Figure 1This is a schematic diagram of a heat exchange device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of a heat exchange component according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the heat exchange component from another perspective in an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the heat exchange component from another perspective in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the support components according to an embodiment of the present invention.

[0022] Figure label:

[0023] Absorption tower 100, absorption tower body 110, absorption section 1110,

[0024] Flue gas inlet: 200; Flue gas outlet: 300; Absorbent solution inlet: 400; Absorbent solution outlet: 500.

[0025] Heat exchange assembly 1, heat exchange component 11, heat exchange tube 111, first end 1111, second end 1112.

[0026] Connection component 2, connection part 21, inlet pipe 211, outlet pipe 212, connection pipe 213.

[0027] Support component 3, first support member 31, second support member 32, support column 33, support plate 34, support hole 341. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The heat exchange device of this embodiment includes a heat exchange assembly 1 and a connecting assembly 2. The heat exchange assembly 1 is adapted to be installed within an absorption tower 100. The heat exchange assembly 1 includes at least one heat exchange component 11, and the at least one heat exchange component 11 includes at least two heat exchange tubes 111. The at least two heat exchange tubes 111 extend in the extending direction of the absorption tower 100 (e.g., along the connecting direction). Figure 1 The heat exchange tubes 111 are arranged at intervals in the vertical direction shown, and in the radial direction of the absorption tower 100 (e.g., in the vertical direction shown). Figure 1The components are arranged in a spiral pattern (as shown in the left-right direction). The connecting assembly 2 includes at least one connecting part 21, which includes an inlet pipe 211, an outlet pipe 212, and at least one connecting pipe 213. The inlet pipe 211 and the outlet pipe 212 are arranged at intervals in the radial direction of the absorption tower 100. One end of the inlet pipe 211 extends at least partially into the absorption tower 100 and is connected to one end of one of the heat exchange tubes 111. One end of the outlet pipe 212 extends at least partially into the absorption tower 100 and is connected to one end of another heat exchange tube 111. One end of the connecting pipe 213 is connected to the other end of one of the heat exchange tubes 111, and the other end of the connecting pipe 213 is connected to the other end of the other heat exchange tube 111.

[0030] It should be noted that the low-temperature heat energy recovery of flue gas in this embodiment is achieved by using an absorption solution as a medium. Flue gas is introduced into the absorption tower 100 from the bottom of the tower, and the absorption solution is introduced into the absorption tower 100 from the top of the tower. The flue gas and the low-temperature absorption solution are in direct counter-current contact. Driven by the difference between the water vapor pressure on the surface of the absorption solution and the water vapor pressure in the flue gas, the water vapor in the flue gas is absorbed by the solution. As the gaseous water vapor becomes liquid, it releases latent heat that can be recovered and transferred to the absorption solution, heating the absorption solution to make it a high-temperature absorption solution.

[0031] In the related technology, the high-temperature absorption solution flows out from the bottom of the absorption tower 100 and then transfers heat through a subsequent heat exchange device. That is, the latent heat recovery of the flue gas is carried out in the absorption tower 100, and the heat reuse of the absorption solution is carried out in the heat exchanger. Since the absorption solution moves from top to bottom in the absorption tower 100 and the flue gas moves from bottom to top in the absorption tower 100, the absorption solution continuously absorbs heat during the downward movement. The heat absorbed by the absorption solution cannot be transferred in time, which causes the temperature of the absorption solution to rise when it is near the bottom of the absorption tower 100, thus reducing the absorption efficiency of the absorption solution.

[0032] Specifically, such as Figure 1 As shown, the heat exchange assembly 1 is located inside the absorption tower 100, and at least two heat exchange tubes 111 have the same structure. Each heat exchange tube 111 is arranged in a planar spiral to form a spiral coil. The starting point of the spiral is set as the first end 1111 of the heat exchange tube 111, and the ending point of the spiral is set as the second end 1112 of the heat exchange tube 111. The inlet pipe 211 and the outlet pipe 212 are both located outside the absorption tower 100, and the inlet pipe 211 and the outlet pipe 212 are arranged symmetrically in the left-right direction.

[0033] like Figures 2-4As shown, the heat exchange component 11 includes two heat exchange tubes 111, which are arranged at intervals in the vertical direction. The upper end of the connecting pipe 213 is connected to the first end 1111 of the upper heat exchange tube 111, and the lower end of the connecting pipe 213 is connected to the first end 1111 of the lower heat exchange tube 111. That is, the upper and lower heat exchange tubes 111 are connected through the connecting pipe 213. One end of the inlet pipe 211 extends into the absorption tower 100 and is connected to the second end 1112 of the lower heat exchange tube 111. One end of the outlet pipe 212 extends into the absorption tower 100 and is connected to the second end 1112 of the upper heat exchange tube 111. This allows the heat exchange medium to flow through the inlet pipe 211 into the lower heat exchange tube 111, and through the connecting pipe 213 into the upper heat exchange tube 111, and then out of the upper heat exchange tube 111 through the outlet pipe 212.

[0034] As the absorbent solution flows from top to bottom, it comes into contact with the flue gas and absorbs its potential energy. The absorbent solution heats up and becomes a high-temperature absorbent solution. When the high-temperature absorbent solution flows from top to bottom, it comes into contact with and wraps around the heat exchange tube 111. The heat exchange medium inside the heat exchange tube 111 exchanges heat with the absorbent solution, transferring the heat in the absorbent solution to the heat exchange medium, thereby reducing the temperature of the absorbent solution and improving its absorption efficiency.

[0035] In this embodiment of the invention, a heat exchange component 1 is directly installed inside the absorption tower 100, and multiple spiral coiled heat exchange tubes 111 are arranged in the vertical direction to increase the contact area between the heat exchange tubes 111 and the absorption solution. The multiple heat exchange tubes 111 are embedded in the absorption tower 100 and are connected by a connecting pipe 213. The multiple heat exchange tubes 111 exchange heat with the absorption solution simultaneously, so that the latent heat recovery process of flue gas and the heat utilization process of the absorption solution are completed simultaneously within the absorption tower 100, thereby reducing the cost of the heat exchange device while improving the absorption efficiency of the absorption solution.

[0036] For example, the heat exchange component 11 includes 3 heat exchange tubes 111, 4 heat exchange tubes 111, 5 heat exchange tubes 111, and 6 heat exchange tubes 111.

[0037] For example, heat exchange component 1 can be installed in the upper, middle and lower parts of the heat exchange tower. In this embodiment, heat exchange component 1 is installed in the middle of the absorption tower 100.

[0038] For example, the absorption solution is a lithium bromide solution, a calcium chloride solution, or a lithium chloride solution. The heat exchange tube 111 is a falling film tube, and the heat exchange medium flowing inside the heat exchange tube 111 is demineralized water. The heat exchange tube 111 is made of a material with high thermal conductivity and strong corrosion resistance, such as copper or stainless steel.

[0039] In some embodiments, the heat exchange assembly 1 includes a plurality of heat exchange components 11, which are spaced apart in the extension direction of the absorption tower, and there are a plurality of connecting components 21, each connecting component 21 corresponding to and cooperating with each heat exchange component 11.

[0040] Specifically, such as Figure 1 As shown, the heat exchange assembly 1 may include multiple heat exchange components 11, which are arranged at intervals in the vertical direction. From top to bottom, they are the first heat exchange component, the second heat exchange component, and the third heat exchange component. Each heat exchange component 11 includes four heat exchange tubes 111. Each heat exchange component 11 includes an inlet pipe 211, an outlet pipe 212, and three connecting pipes 213. The connecting pipes 213 are used to connect two adjacent heat exchange tubes 111 in each heat exchange component 11. The inlet pipe 211 is used to introduce heat exchange medium into the heat exchange component 11, and the outlet pipe 212 is used to allow the heat exchange medium in the heat exchange component 11 to flow out. Each heat exchange component 11 can be controlled individually.

[0041] Optionally, each heat exchange component 11 is equipped with a shut-off valve to control the opening and closing of the inlet pipe 211.

[0042] For example, heat exchange medium is introduced into the first heat exchange component, while the second and third heat exchange components are not activated. Alternatively, heat exchange medium is introduced into the first and second heat exchange components, while the third heat exchange component is not activated. Or, heat exchange medium is introduced into the first, second, and third heat exchange components. The flow rate of the heat exchange medium introduced into each heat exchange component 11 can also be adjusted according to actual conditions.

[0043] This invention provides an embodiment of the invention that sets up multiple heat exchange components 11 and arranges them one-to-one with multiple connecting components 21, so that each heat exchange component 11 can be controlled independently. The state of the multiple heat exchange components 11 in the heat exchange assembly 1 can be adjusted according to different operating conditions such as flue gas temperature, humidity and flow rate, so as to flexibly adjust the flow rate of the heat exchange medium and the distribution of the heat exchange zone, thereby improving the heat exchange efficiency of the heat exchange device.

[0044] In some embodiments, the connecting pipe 213 is an arc-shaped connecting pipe, or the connecting pipe 213 includes a first connecting pipe (not shown in the figure) and a second connecting pipe (not shown in the figure) connected in sequence, the first connecting pipe is a first arc segment, the second connecting pipe is a second arc segment, and the bending direction of the second arc segment is different from that of the first arc segment.

[0045] Specifically, such as Figure 1As shown, the heat exchange component 11 includes four heat exchange tubes 111, which are arranged at intervals in the vertical direction. From top to bottom, they are the first heat exchange tube, the second heat exchange tube, the third heat exchange tube, and the fourth heat exchange tube. The first end 1111 of the first heat exchange tube is connected to the first end 1111 of the second heat exchange tube. The second end 1112 of the first heat exchange tube is connected to the outlet pipe 212. The second end 1112 of the second heat exchange tube is connected to the second end 1112 of the third heat exchange tube. The first end 1111 of the third heat exchange tube is connected to the first end 1111 of the fourth heat exchange tube. The second end 1112 of the fourth heat exchange tube is connected to the inlet pipe 211.

[0046] This embodiment does not limit the number of heat exchange components 11, nor does it limit the number of heat exchange tubes 111 in each heat exchange component 11; the specific implementation shall prevail.

[0047] When the first ends 1111 or the second ends 1112 of two adjacent heat exchange tubes 111 in the heat exchange component 11 are located at the same position in the left-right direction, the connecting pipe 213 is an arc-shaped connecting pipe. The upper end of the arc-shaped connecting pipe is connected to the upper heat exchange tube 111, and the lower end of the arc-shaped connecting pipe is connected to the lower heat exchange tube 111. When the first ends 1111 or the second ends 1112 of two adjacent heat exchange tubes 111 in the heat exchange component 11 are arranged at intervals in the left-right direction, the connecting pipe 213 includes a first connecting pipe and a second connecting pipe. One end of one heat exchange tube 111 is connected to the other heat exchange tube 111 through the second arc-shaped pipe section, and then the second connecting pipe is connected to the other heat exchange tube 111 through the first connecting pipe.

[0048] For example, the second end 1112 of the upper heat exchange tube 111 and the second end 1112 of the lower heat exchange tube 111 are arranged at intervals in the left and right direction. They can be connected to the second end 1112 of the lower heat exchange tube 111 through a second arc tube segment. The other end of the second arc tube segment is located at the same position in the left and right direction as the second end 1112 of the upper heat exchange tube 111. Then the second arc tube segment is connected to the first arc tube segment to realize the connection of two adjacent heat exchange tubes 111.

[0049] In some embodiments, the connecting pipe 213 is arranged near the inner wall of the absorption tower 100 and connected to one end of the heat exchange pipe 111 near the inner wall of the absorption tower 100; or, the connecting pipe 213 is arranged away from the inner wall of the absorption tower 100 and connected to one end of the heat exchange pipe 111 away from the inner wall of the absorption tower 100.

[0050] Specifically, when the connecting pipe 213 is used to connect the first ends 1111 of two adjacent heat exchange tubes 111 in the heat exchange component 11, the connecting pipe 213 is located near the center of the absorption tower 100. When the connecting pipe 213 is used to connect the second ends 1112 of two adjacent heat exchange tubes 111 in the heat exchange component 11, the connecting pipe 213 is located away from the center of the absorption tower 100 and near the inner wall of the absorption tower 100. By setting the connecting pipe 213 at different positions, it is convenient to connect adjacent heat exchange tubes 111.

[0051] For example, when the heat exchange component 11 includes four heat exchange tubes 111, two of the three connecting tubes 213 are located at the center of the absorption tower 100, and one heat exchange tube 111 is adjacent to the inner wall of the absorption tower 100.

[0052] In some embodiments, the flow direction of the heat exchange medium in the connecting pipe 213 is opposite to the flow direction of the absorption solution in the absorption tower 100, so that the absorption solution and the heat exchange medium can exchange heat.

[0053] Specifically, the heat exchange medium in the connecting pipe 213 flows from bottom to top, while the absorption solution flows from top to bottom. When the absorption solution flows from top to bottom, it will contact and wrap around the heat exchange pipe 111, so that the heat exchange pipe 111 only exchanges heat with the absorption solution, thereby improving the heat exchange efficiency and thus improving the absorption efficiency of the absorption solution.

[0054] In some embodiments, the heat exchange device further includes a support assembly 3, which includes a first support member 31 and a second support member 32. The first support member 31 and the second support member 32 are arranged at intervals in the extension direction of the absorption tower. The first support member 31 is connected to the absorption tower 100. One end of the heat exchange assembly 1 is connected to the first support member 31, and the other end of the heat exchange assembly 1 is connected to the second support member 32.

[0055] Specifically, such as Figure 5 As shown, the first support member 31 is located at the lower end, and the second support member 32 is located at the upper end. The first support member 31 is connected to the absorption tower 100 to fix the position of the first support member 31. The upper end of the heat exchange component 1 is connected to the second support member 32, and the lower end of the heat exchange component 1 is connected to the first support member 31. The heat exchange component 1 is supported by the support component 3 to ensure the stability of the heat exchange tube 111 during use.

[0056] For example, both the first support member 31 and the second support member 32 are cross-shaped, parallel, or square-shaped structures. The support assembly 3 is made of stainless steel.

[0057] In some embodiments, the support component 3 further includes a support column 33, one end of which is connected to the first support member 31, and the other end of which is connected to the second support column 33.

[0058] Specifically, the upper end of the support column 33 is connected to the second support member 32, and the lower end of the support column 33 is connected to the first support member 31. The first support member 31 and the second support member 32 are connected through the support member to realize the integrity of the support assembly 3, thereby improving the support stability of the support assembly 3.

[0059] In some embodiments, the support assembly 3 further includes a support plate 34, which is disposed in the absorption tower 100 and extends along the extension direction of the absorption tower 100. The support plate 34 is connected to the support column 33. A support hole 341 is provided on the support plate 34 and extends through the support plate 34 along its thickness direction. The support hole 341 cooperates with the heat exchange tube 111 to support the heat exchange tube 111.

[0060] Specifically, the support plate 34 extends vertically, and one end of the support plate 34 is connected to the support column 33. The support column 33 connects the support plate 34 to the first support member 31 and the second support member 32. The support plate 34 is provided with a support hole 341, through which the heat exchange tube 111 passes, facilitating the support of the heat exchange tube 111 by the support plate 34 and thus improving the support effect of the support plate 34.

[0061] In some embodiments, there are multiple support holes 341, which are distributed in a matrix on the support plate 34, and / or there are multiple support plates 34, which are arranged at intervals along the circumference of the absorption tower 100.

[0062] Specifically, the support holes 341 are arranged in a matrix, and the spacing between two adjacent support holes 341 in the left-right direction is the same as the spacing in the left-right direction of the same heat exchange tube 111. The spacing between two adjacent support holes 341 in the up-down direction is the same as the spacing between two adjacent heat exchange tubes 111 in the up-down direction. This makes it easier for multiple support plates 34 to support multiple positions of the heat exchange tube 111 and improve the stability of the heat exchange tube 111.

[0063] For example, the diameter of heat exchange tube 111 is 20mm-50mm. When the diameter of heat exchange tube 111 is less than 20mm, under the same conditions, the thickness of the liquid film outside the tube increases, the thermal resistance of heat transfer increases, which is not conducive to the recovery of waste heat from demineralized water. When the diameter of heat exchange tube 111 is greater than 50mm, under the same conditions, the thickness of the liquid film outside the tube decreases, and "dry spots" are easily formed on the surface of the falling film tube, resulting in no liquid phase contact and deterioration of heat transfer.

[0064] For example, the spacing between adjacent heat exchange tubes 111 is 20mm-50mm. When the spacing between heat exchange tubes 111 is less than 20mm, the liquid film disturbance on the surface of the falling film tube decreases, the liquid film velocity decreases, and a stable thermal boundary layer is easily formed, which is not conducive to the heat and mass transfer process. When the spacing between heat exchange tubes 111 is greater than 50mm, the lower falling film tube cannot effectively receive the liquid from the upper falling film tube, the fluid splashing between tubes increases, and an effective falling film cannot be formed.

[0065] For example, the distance between two adjacent heat exchange tubes 111 is 20mm-50mm. When the interval between the two heat exchange tubes 111 is less than 20mm, it is not conducive to the manufacturing of the heat exchange tubes 111. When the interval between the two heat exchange tubes 111 is greater than 50mm, it reduces the heat exchange effect of the heat exchange device.

[0066] The absorption tower 100 of this embodiment includes an absorption tower body 110 and a heat exchange device. The absorption tower body 110 includes a plurality of absorption sections 1110 arranged at intervals in the extending direction of the absorption tower. The heat exchange device is the heat exchange device of the above embodiment, and the heat exchange device is disposed in the absorption section 1110.

[0067] Specifically, the absorption tower body 110 is provided with a flue gas inlet 200, a flue gas outlet 300, an absorbent solution inlet 400, and an absorbent solution outlet 500. The flue gas inlet 200 is arranged near the bottom of the tower, the flue gas outlet 300 is arranged near the top of the tower, the absorbent solution is arranged near the top of the tower, and the absorbent solution is arranged near the bottom of the tower. The heat exchange device is located between the flue gas inlet 200 and the absorbent solution inlet 400.

[0068] This invention, by installing a heat exchange device inside the absorption tower 100, can not only remove the heat from the high-temperature absorption solution in a timely manner and improve the heat exchange efficiency, but also allow the latent heat recovery process of flue gas and the heat utilization process of the absorption solution to be completed simultaneously inside the absorption tower 100, saving investment in heat exchangers.

[0069] Furthermore, the arrangement of the heat exchange tubes 111 in the planar spiral coil allows for timely heat transfer from the absorption solution to the heat exchange medium, thereby improving the absorption efficiency of the absorption solution. This enables the absorption tower 100 to operate normally and efficiently under varying load conditions. It can adapt to operating conditions with a wide range of load changes, flexibly adjusting the flow rate and heat exchange zone distribution of the heat exchange medium in the heat exchange component 1. This avoids the limitation of the absorption tower 100 and heat exchanger being separately set up in related technologies, which can only operate within a fixed elastic load. This allows the absorption tower 100 to operate flexibly, normally, and efficiently under a wide range of varying load conditions, without causing energy waste.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] It is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat exchange device, characterized in that, include: A heat exchange assembly, the heat exchange assembly being adapted to be installed inside an absorption tower, the heat exchange assembly including at least one heat exchange component, the at least one heat exchange component including at least two heat exchange tubes, the at least two heat exchange tubes being arranged at intervals in the extending direction of the absorption tower, the heat exchange tubes being arranged in a spiral in the radial direction of the absorption tower. A connecting assembly includes at least one connecting component, the at least one connecting component including an inlet pipe, an outlet pipe and at least one connecting pipe, the inlet pipe and the outlet pipe being arranged at intervals in the radial direction of the absorption tower, one end of the inlet pipe extending at least partially into the absorption tower and connected to one end of one of the heat exchange tubes, one end of the outlet pipe extending at least partially into the absorption tower and connected to one end of another heat exchange tube, one end of the connecting pipe being connected to the other end of one of the heat exchange tubes, and the other end of the connecting pipe being connected to the other end of the other heat exchange tube; The connecting pipe is an arc-shaped connecting pipe, or the connecting pipe includes a first connecting pipe and a second connecting pipe connected in sequence, the first connecting pipe is a first arc pipe segment, the second connecting pipe is a second arc pipe segment, and the bending direction of the second arc pipe segment is different from that of the first arc pipe segment; The flow direction of the heat exchange medium in the connecting pipe is opposite to the flow direction of the absorption solution in the absorption tower, so that the absorption solution and the heat exchange medium can exchange heat. The heat exchange device further includes a support assembly, which includes a first support member and a second support member. The first support member and the second support member are arranged at intervals in the extension direction of the absorption tower. The first support member is connected to the absorption tower. One end of the heat exchange assembly is connected to the first support member, and the other end of the heat exchange assembly is connected to the second support member. The support assembly further includes a support column, one end of which is connected to the first support member, and the other end of which is connected to the second support member; The support assembly also includes a support plate, which is disposed inside the absorption tower and extends along the extension direction of the absorption tower. The support plate is connected to the support column. A support hole is provided on the support plate, which penetrates the support plate along its thickness direction. The support hole cooperates with the heat exchange tube to support the heat exchange tube.

2. The heat exchange device according to claim 1, characterized in that, The heat exchange assembly includes a plurality of heat exchange components, which are arranged at intervals along the extension direction of the absorption tower, and there are a plurality of connecting components, each of which corresponds to and cooperates with each of the heat exchange components.

3. The heat exchange device according to claim 2, characterized in that, The connecting pipe is arranged near the inner wall of the absorption tower and connected to one end of the heat exchange tube near the inner wall of the absorption tower; alternatively, the connecting pipe is arranged away from the inner wall of the absorption tower and connected to one end of the heat exchange tube away from the inner wall of the absorption tower.

4. The heat exchange device according to claim 3, characterized in that, The number of support holes is multiple, and the multiple support holes are distributed in a matrix on the support plate, and / or the number of support plates is multiple, and the multiple support plates are arranged at intervals along the circumference of the absorption tower.

5. An absorption tower, characterized in that, include: The absorption tower body includes a plurality of absorption sections spaced apart in the extending direction of the absorption tower; A heat exchange device, wherein the heat exchange device is any one of the heat exchange devices described in claims 1-4, and the heat exchange device is disposed in the absorption section.

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