Adsorption and regeneration combined tower

Abstract

The invention relates to the technical field of adsorption and purification and discloses an adsorption and regeneration combined tower which comprises a tower body, and an inner cavity of the tower body is divided into an adsorption cavity used for adsorption and purification of flue gas and a regeneration cavity used for desorption and regeneration of an adsorbent. According to the adsorption and regeneration combined tower, low-temperature adsorption of flue gas is achieved, the purification effect of the flue gas is improved, and near-zero emission can be achieved. Moreover, the adsorption tower and the regeneration tower are integrated into one tower, so that the number of equipment is reduced, the miniaturization of the adsorption and regeneration tower is realized, the occupied area can be saved, the manufacturing cost can be reduced, and the device has the characteristic of high integration level. The highly integrated tower body also shortens the adsorbent conveying distance between the adsorption tower and the regeneration tower, reduces the consumption of thermal insulation materials, reduces the loss of cold energy, further reduces the construction cost, reduces the conveying time and conveying cost of materials, and improves the adsorption and regeneration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of adsorption purification, and in particular to an adsorption regeneration combined tower. Background Art

[0002] The flue gas adsorption discharged from the coal-fired boiler in the related art is high-temperature adsorption, that is, the high-temperature flue gas (usually at 200°C) is passed into the adsorption tower, and the pollutants in the flue gas are adsorbed and removed by the adsorbent filled in the adsorption tower. The adsorbent to be regenerated that has adsorbed the pollutants in the flue gas is transported to the regeneration tower for heating and desorption to achieve the regeneration of the adsorbent. The regenerated adsorbent returns to the adsorption tower to continue to adsorb and purify the flue gas, thereby the adsorbent is recycled between the adsorption tower and the regeneration tower. However, high-temperature adsorption has the problems of large adsorbent consumption, poor adsorption effect, and high nitrogen oxide content in the clean flue gas after adsorption, and it is impossible to achieve near-zero emissions. Summary of the invention

[0003] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0004] In order to overcome the problems of high-temperature adsorption, low-temperature flue gas adsorption technology has been proposed in related technologies, that is, firstly, the high-temperature flue gas is cooled in a spray cooling tower to a low-temperature flue gas below room temperature, for example, and then the low-temperature flue gas is input into an adsorption tower for low-temperature adsorption, and the adsorbent saturated with adsorption is sent to a regeneration tower for heating desorption regeneration, and the regenerated adsorbent is then sent back to the adsorption tower for recycling. In low-temperature adsorption, the adsorption capacity of the adsorbent is increased exponentially in a low-temperature environment, which greatly improves the adsorption purification rate compared to conventional high-temperature flue gas adsorption, and can achieve near-zero flue gas emissions.

[0005] However, the adsorption tower and regeneration tower of the flue gas low-temperature adsorption regeneration system in the related art are arranged separately, resulting in a large footprint of the overall system, a large number of equipment, and complex pipeline connections. In addition, the pipeline between the adsorption tower and the regeneration tower needs to be equipped with an insulation layer to avoid cold loss, further increasing the cost. Therefore, there is still a need for improvement.

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes an adsorption regeneration combined tower with high integration, small footprint and low manufacturing cost.

[0007] The adsorption and regeneration combined tower of the present invention comprises a tower body, the inner cavity of the tower body is separated into an adsorption chamber for flue gas adsorption purification and a regeneration chamber for desorption and regeneration of an adsorbent, the adsorption chamber has a flue gas inlet, a flue gas outlet, an adsorbent feeding port and an adsorbent discharge port, the regeneration chamber has a regeneration gas outlet, an adsorbent inlet and an adsorbent outlet, the flue gas inlet is used to transport low-temperature flue gas below room temperature into the adsorption chamber, the flue gas outlet is used to discharge clean flue gas after adsorption, the regeneration gas outlet is used to discharge the regeneration gas in the regeneration chamber, the adsorbent discharge port is connected with the adsorbent inlet, so as to transport the adsorbent discharged from the adsorption chamber into the regeneration chamber for desorption and regeneration, and the adsorbent feeding port is connected with the adsorbent outlet, so as to transport the adsorbent discharged from the regeneration chamber into the adsorption chamber for adsorption and purification of low-temperature flue gas.

[0008] The adsorption and regeneration combined tower of the present invention realizes low-temperature adsorption of flue gas, improves the purification effect of flue gas, and can achieve near-zero emission. Moreover, the adsorption tower and the regeneration tower are integrated into one tower, which reduces the number of equipment compared with the related art, realizes the miniaturization of the adsorption and regeneration tower, not only saves space, but also reduces manufacturing costs, and has the characteristics of high integration. The highly integrated tower body also shortens the adsorbent transportation distance between the adsorption tower and the regeneration tower, reduces the amount of insulation materials, reduces the loss of cold, further reduces the construction cost, reduces the material transportation time and transportation cost, and improves the adsorption and regeneration efficiency.

[0009] Optionally, the adsorbent feed port is connected to the adsorbent outlet through a first adsorbent delivery circuit, and the adsorbent discharge port is connected to the adsorbent inlet through a second adsorbent delivery circuit. The adsorption regeneration combined tower of the embodiment of the present invention can be provided with a hoist on the second adsorbent delivery circuit, so as to facilitate the delivery of the adsorbent saturated in the adsorption chamber to the regeneration chamber for desorption, so as to facilitate the delivery and control of the adsorbent saturated.

[0010] Optionally, the adsorption chamber and the regeneration chamber are arranged side by side in the horizontal direction. This can avoid the adsorption and regeneration combined tower being too high due to the adsorption chamber and the regeneration chamber being arranged in the up-down direction, thereby greatly reducing the risks of hoisting and high-altitude operations of the adsorption and regeneration combined tower of the embodiment of the present invention, and is conducive to reducing the safety of manufacturing and installing the adsorption and regeneration combined tower.

[0011] Optionally, the inner cavity of the tower body is provided with a partition, and the partition divides the inner cavity of the tower body into the adsorption cavity and the regeneration cavity. When the adsorption regeneration combination tower of the embodiment of the present invention is manufactured, the tower body can be manufactured first, and then the partition can be sealed and welded to the inner wall of the tower body to divide the inner cavity of the tower body into the adsorption cavity and the regeneration cavity, so that the adsorption cavity and the regeneration cavity share a partition, thereby making the adsorption regeneration combination tower simple in structure and easy to manufacture, which is further conducive to reducing the manufacturing cost of the adsorption regeneration combination tower.

[0012] Optionally, the regeneration chamber includes a heating section and a cooling section arranged in the up-down direction, the heating section is used to heat the adsorbent to a first temperature to desorb and regenerate the adsorbent, and the cooling section is used to cool the regenerated adsorbent to a second temperature, wherein the first temperature is higher than the second temperature, and a first pipeline is provided between the cooling section and the adsorption chamber, which is used to supply at least a portion of the clean flue gas discharged from the adsorption chamber to the cooling section as a cooling medium. The adsorption regeneration combination tower of the embodiment of the present invention supplies at least a portion of the clean flue gas discharged from the adsorption chamber to the cooling section as a cooling medium, without the need to separately set up a cooling medium in the cooling section to cool the adsorbent, thereby saving energy consumption, which is conducive to saving costs.

[0013] Optionally, a first control valve is provided on the first pipeline to control the flow of clean flue gas supplied from the adsorption chamber to the cooling section, so that the opening of the first control valve can be adjusted according to the cooling demand for the adsorbent, so that the flow of clean flue gas from the adsorption chamber into the cooling section can be easily controlled.

[0014] Optionally, the adsorption regeneration combined tower of the embodiment of the present invention further includes a heater, which is arranged on the second pipeline connecting the cooling section and the heating section, and is used to heat the cooling medium discharged from the cooling section and then transport it to the heating section as a heating medium. The adsorption regeneration combined tower of the embodiment of the present invention is provided with a heater, and the clean flue gas after heat exchange with the adsorbent in the cooling section is heated by the heater and then transported to the heating section, thereby achieving full utilization of the clean flue gas energy, avoiding the need to separately set up a heat exchange medium to heat the adsorbent in the heating section, and greatly reducing the manufacturing cost of the heat exchange medium, which not only improves the utilization rate of the heat exchange medium, but also saves costs.

[0015] Optionally, the regeneration chamber further has a preheating section located above the heating section, and the preheating section is connected to the heating section through a third pipeline for conveying the heating medium discharged from the heating section into the preheating section as preheating medium.

[0016] Optionally, the regeneration chamber further comprises a first buffer section, which is located between the preheating section and the heating section; the inner cavity of the tower body further comprises a second buffer section, which is located between the heating section and the cooling section. After the heating medium introduced into the heating section exchanges heat with the adsorbent saturated with adsorption, it also carries a portion of heat, which is transported to the preheating section through the third pipeline 9 to preheat the adsorbent in the preheating section, thereby achieving preheating of the adsorbent in the heating section and preventing waste of waste heat of the heating medium. In addition, the adsorption regeneration combination tower of the embodiment of the present invention is preheated by the adsorbent so that the adsorbent can be rapidly heated up and desorbed in the heating section, which is beneficial to the rapid desorption and regeneration of the adsorbent in the heating section, thereby facilitating the improvement of the regeneration efficiency of the adsorbent.

[0017] Optionally, a feed pipe extending in the up-down direction is respectively provided in the preheating section, the heating section and the cooling section, and the adsorbent passes downward through the preheating section, the heating section and the cooling section through the feed pipe. When the heat exchange medium exchanges heat with the adsorbent, the heat exchange medium can be indirectly exchanged with the heat exchange medium through the feed pipe, thereby avoiding direct contact between the heat exchange medium and the adsorbent and contaminating the adsorbent, which is beneficial to improving the working reliability of the adsorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an adsorption regeneration combined tower according to an embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the adsorbent according to the embodiment of the present invention.

[0020] Reference numerals:

[0021] Adsorption regeneration combined tower 100;

[0022] Tower body 1; adsorption chamber 101; flue gas inlet 1011; flue gas outlet 1012; adsorbent feeding port 1013; adsorbent discharge port 1014; regeneration chamber 102; regeneration gas outlet 1021; adsorbent inlet 1022; adsorbent outlet 1023; heating section 1024; cooling section 1025; preheating section 1026; first buffer section 1027; second buffer section 1028;

[0023] A first adsorbent transport loop 2;

[0024] The second adsorbent transport loop 3;

[0025] Partition 4;

[0026] First pipeline 5;

[0027] A first control valve 6;

[0028] Heater 7;

[0029] Second pipeline 8;

[0030] The third pipeline 9;

[0031] Feeding pipe 10;

[0032] Breathable outer shell 11. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, the adsorption regeneration combined tower 100 of the embodiment of the present invention includes a tower body 1, the inner cavity of the tower body 1 is separated into an adsorption chamber 101 for flue gas adsorption purification and a regeneration chamber 102 for desorption regeneration of the adsorbent. The adsorption chamber 101 has a flue gas inlet 1011, a flue gas outlet 1012, an adsorbent feeding port 1013 and an adsorbent discharge port 1014. The regeneration chamber 102 has a regeneration gas outlet 1021, an adsorbent inlet 1022 and an adsorbent outlet 1023. The flue gas inlet 1011 is used to transport low-temperature flue gas below room temperature into the adsorption chamber 101, the flue gas outlet 1012 is used to discharge the clean flue gas after adsorption, and the regeneration gas outlet 1021 is used to discharge the regeneration gas in the regeneration chamber 102. The adsorbent discharge port 1014 is connected to the adsorbent inlet 1022 to transport the adsorbent discharged from the adsorption chamber 101 to the regeneration chamber 102 for desorption and regeneration. The adsorbent feeding port 1013 is connected to the adsorbent outlet 1023 to transport the adsorbent discharged from the regeneration chamber 102 to the adsorption chamber 101 for adsorption and purification of low-temperature flue gas.

[0036] Specifically, during the use of the adsorption regeneration combined tower 100 of the embodiment of the present invention, the flue gas enters the adsorption chamber 101 through the flue gas inlet 1011, and the flue gas is adsorbed by the adsorbent in the adsorption chamber 101 to become clean flue gas, and is discharged from the adsorption chamber 101 through the flue gas outlet 1012. The adsorbent saturated with adsorption in the adsorption chamber 101 is discharged through the adsorbent discharge port 1014, and the discharged adsorbent saturated with adsorption enters the regeneration chamber 102 through the adsorbent inlet 1022, and is heated and desorbed in the regeneration chamber 102 to generate regenerated adsorbent and regeneration gas. The regenerated adsorbent is discharged through the adsorbent outlet 1023 and enters the adsorption chamber 101 through the adsorbent feeding port 1013 to continue adsorption, and the regeneration gas generated in the regeneration chamber 102 is discharged through the regeneration gas outlet 1021.

[0037] In an embodiment of the present invention, low-temperature flue gas is flue gas below room temperature, so that the adsorbent performs low-temperature adsorption on the flue gas, improves the adsorption effect, and can achieve near-zero emissions. Preferably, the temperature of the low-temperature flue gas is below zero, for example, -80°C to -5°C. More preferably, the temperature of the low-temperature flue gas is -20°C to -10°C. The inventors have found through research that the lower the flue gas temperature, the more beneficial it is for adsorption purification. However, if the flue gas temperature is too low, the equipment structure for cooling the flue gas will be complex and the energy consumption will increase. For example, the cooling equipment, the adsorption tower, and the pipeline have high requirements for sealing, which will increase the cost. In addition, too low temperature conditions will easily cause condensation water to appear in the adsorption chamber, causing the adsorbent to stick and clog, affecting the adsorption. Therefore, it is beneficial to cool the flue gas temperature to -20°C to -10°C.

[0038] The adsorption regeneration combined tower 100 of the embodiment of the present invention realizes low-temperature adsorption of flue gas, improves the purification effect of flue gas, and can achieve near-zero emission. Moreover, the adsorption tower and the regeneration tower are integrated into one tower, which reduces the number of equipment compared with the related art, realizes the miniaturization of the adsorption regeneration tower, not only saves space, but also reduces the manufacturing cost, and has the characteristics of high integration. The highly integrated tower body also shortens the adsorbent transportation distance between the adsorption tower and the regeneration tower, reduces the amount of insulation material, reduces the cold loss, further reduces the construction cost, reduces the material transportation time and transportation cost, and improves the adsorption regeneration efficiency.

[0039] In an embodiment of the present invention, the adsorbent may be a granular or powdered adsorbent, or an adsorbent body made of powdered or granular adsorbent, such as a sphere or cylinder formed by a powdered or granular adsorbent through a binder. Of course, a protective shell may be further formed on the outside of the adsorbent body, such as a breathable film covering the outside of the adsorbent body, to improve the strength of the adsorbent body.

[0040] like Figure 2 As shown, the adsorbent can be filled in the air-permeable shell 11 to form an adsorption unit, wherein the air-permeable shell 11 has air holes, and smoke can enter the air-permeable shell 11 through the air holes, and the smoke can pass through the gaps between adjacent adsorbents and / or the holes of the adsorbents themselves, thereby reducing direct collisions, friction and wear between adsorbents, and the generation of dust. The air-permeable shell 11 can be in the shape of a rotating body such as a sphere or a cylinder, wherein the diameter of the air-permeable shell 11 is 10mm-100mm, and the diameter of the adsorbent is 1mm-10mm.

[0041] Optionally, the adsorbent feeding port 1013 is connected to the adsorbent outlet 1023 via a first adsorbent transport loop 2 , and the adsorbent discharge port 1014 is connected to the adsorbent inlet 1022 via a second adsorbent transport loop 3 .

[0042] For example, Figure 1As shown, the adsorption regeneration combined tower 100 of the embodiment of the present invention may be provided with a lift on the first adsorbent delivery loop 2, so as to facilitate the delivery and control of the regenerated adsorbent produced in the regeneration chamber 102 to the adsorption chamber 101 through the first adsorbent delivery loop 2. The adsorption regeneration combined tower 100 of the embodiment of the present invention may be provided with a lift on the second adsorbent delivery loop 3, so as to facilitate the delivery and control of the adsorption saturated adsorbent produced in the adsorption chamber 101 to the regeneration chamber 102 for desorption, so as to facilitate the delivery and control of the adsorption saturated adsorbent.

[0043] Optionally, the adsorption chamber 101 and the regeneration chamber 102 are arranged side by side in the horizontal direction.

[0044] like Figure 1 As shown, the adsorption regeneration combination tower 100 of the embodiment of the present invention arranges the adsorption chamber 101 and the regeneration chamber 102 side by side in the horizontal direction, thereby avoiding the high height of the adsorption regeneration combination tower 100 caused by the adsorption chamber 101 and the regeneration chamber 102 being arranged in the up and down directions. This can greatly reduce the risks of hoisting and high-altitude operations of the adsorption regeneration combination tower 100 of the embodiment of the present invention, which is beneficial to reducing the safety of manufacturing and installation of the adsorption regeneration combination tower 100.

[0045] Alternatively, if Figure 1 As shown, the adsorption chamber 101 and the regeneration chamber 102 have the same height in the vertical direction, and the top cavity wall of the adsorption chamber 101 and the top cavity wall of the regeneration chamber 102 are located in the same horizontal plane, so as to avoid the tower body 1 having an irregular shape due to the different heights of the adsorption chamber 101 and the regeneration chamber 102 in the vertical direction, which is beneficial to the processing and manufacturing of the tower body 11.

[0046] Optionally, a partition 4 is provided in the inner cavity of the tower body 1 , and the partition 4 divides the inner cavity of the tower body 1 into an adsorption cavity 101 and a regeneration cavity 102 .

[0047] Specifically, when the adsorption regeneration combination tower 100 of the embodiment of the present invention is processed and manufactured, the tower body 1 can be processed and manufactured first, and then the partition 4 can be sealed and welded to the inner wall of the tower body 1 to divide the inner cavity of the tower body 1 into an adsorption chamber 101 and a regeneration chamber 102, so that the adsorption chamber 101 and the regeneration chamber 102 share a partition, thereby making the adsorption regeneration combination tower 100 simple in structure and easy to process and manufacture, which is further beneficial to reducing the manufacturing cost of the adsorption regeneration combination tower 100.

[0048] Optionally, the thickness of the partition 4 is 10 mm-20 mm. Preferably, the thickness of the partition 4 is 15 mm. When the thickness of the partition 4 is set too small, the strength of the partition 4 will be weak, resulting in poor segmentation effect. When the thickness of the partition 4 is set too large, it will lead to waste of material costs.

[0049] In some embodiments, the regeneration chamber 102 includes a heating section 1024 and a cooling section 1025 arranged in the up-down direction, the heating section 1024 is used to heat the adsorbent to a first temperature to desorb and regenerate the adsorbent, and the cooling section 1025 is used to cool the regenerated adsorbent to a second temperature, wherein the first temperature is higher than the second temperature. A first pipeline 5 is provided between the cooling section 1025 and the adsorption chamber 101, for supplying at least a portion of the clean flue gas discharged from the adsorption chamber 101 to the cooling section 1025 as a cooling medium, that is, a portion of the clean flue gas discharged from the adsorption chamber 101 can be used in the cooling section 1025 as a cooling medium, or all of the clean flue gas discharged from the adsorption chamber 101 can be used in the cooling section 1025 as a cooling medium.

[0050] For example, the first temperature is 350°C and the second temperature is 60°C.

[0051] After the adsorbent is desorbed and regenerated in the regeneration chamber 102, since the temperature of the desorbed adsorbent is relatively high, the adsorbent can flow through the cooling section 1025 to exchange heat with the clean flue gas in the cooling section 1025 to achieve cooling of the adsorbent. Therefore, the adsorption and regeneration combined tower 100 of the embodiment of the present invention supplies at least a portion of the clean flue gas discharged from the adsorption chamber 101 to the cooling section 1025 as a cooling medium, and there is no need to separately set a cooling medium in the cooling section 1025 to cool the adsorbent, thereby saving energy consumption, thereby helping to save costs.

[0052] Optionally, a first control valve 6 is provided on the first pipeline 5 to control the flow rate of the clean flue gas supplied from the adsorption chamber 101 to the cooling section 1025. Specifically, the adsorption regeneration combined tower 100 of the embodiment of the present invention adjusts the flow rate of the clean flue gas from the adsorption chamber 101 to the cooling section 1025 by adjusting the opening of the first control valve 6, so that the opening of the first control valve 6 can be adjusted according to the cooling demand for the adsorbent, so that the flow rate of the clean flue gas from the adsorption chamber 101 to the cooling section 1025 is conveniently controlled.

[0053] In some embodiments, the adsorption regeneration combination tower 100 of the embodiment of the present invention also includes a heater 7, which is arranged on the second pipeline 8 connecting the cooling section 1025 and the heating section 1024, and is used to heat the cooling medium discharged from the cooling section 1025 and then transport it to the heating section 1024 as a heating medium.

[0054] Specifically, the heater 7 can be an electric heater. The clean flue gas after heat exchange with the adsorbent in the cooling section 1025 enters the heater 7 through the second pipeline 8, and enters the heating section 1024 after being heated by the heater 7, and exchanges heat with the adsorbent in the heating section 1024, thereby heating the adsorbent.

[0055] Therefore, the adsorption regeneration combination tower 100 of the embodiment of the present invention is provided with a heater 7, and the clean flue gas after heat exchange with the adsorbent in the cooling section 1025 is heated by the heater 7 and then transported to the heating section 1024, thereby fully utilizing the energy of the clean flue gas. It can avoid the need to separately provide a heat exchange medium to heat the adsorbent in the heating section 1024, which greatly reduces the manufacturing cost of the heat exchange medium, which not only improves the utilization rate of the heat exchange medium, but also saves costs.

[0056] In some embodiments, the regeneration chamber 102 also has a preheating section 1026 located above the heating section 1024. The preheating section 1026 is connected to the heating section 1024 through a third pipeline 9, which is used to transport the heating medium discharged from the heating section 1024 to the preheating section 1026 as a preheating medium.

[0057] Specifically, after the heating medium introduced into the heating section 1024 exchanges heat with the adsorbent saturated with adsorption, it also carries a portion of heat and is transported to the preheating section 1026 through the third pipeline 9 to preheat the adsorbent in the preheating section 1026, thereby achieving preheating of the adsorbent in the heating section 1024 and preventing waste heat of the heating medium. In addition, the adsorption regeneration combined tower 100 of the embodiment of the present invention is preheated by the adsorbent so that the adsorbent can be rapidly heated and desorbed in the heating section 1024, which is beneficial to the rapid desorption and regeneration of the adsorbent in the heating section 1024, thereby improving the regeneration efficiency of the adsorbent.

[0058] Optionally, the regeneration chamber 102 further comprises a first buffer section 1027 , which is located between the preheating section 1026 and the heating section 1024 . The inner cavity of the tower body 1 further comprises a second buffer section 1028 , which is located between the heating section 1024 and the cooling section 1025 .

[0059] like Figure 1 As shown, the adsorption regeneration combined tower 100 of the embodiment of the present invention is provided with a first buffer section 1027 between the preheating section 1026 and the heating section 1024. The adsorbent flowing out of the preheating section 1026 can play a buffering role in the first buffer section 1027, so that the adsorbent can smoothly flow downward to the heating section 1024. In addition, due to the different temperatures between the preheating section 1026 and the heating section 1024, the adsorbent in the first buffer section 1027 can isolate the preheating section 1026 and the heating section 1024, prevent the temperatures between the preheating section 1026 and the heating section 1024 from affecting each other, and help improve the working reliability between the preheating section 1026 and the heating section 1024.

[0060] The adsorption-regeneration combined tower 100 of the embodiment of the present invention is provided with a second buffer section 1028 between the heating section 1024 and the cooling section 1025. The adsorbent flowing out of the heating section 1024 can play a buffering role in the second buffer section 1028, so that the adsorbent can smoothly flow downward into the cooling section 1025. In addition, due to the different temperatures between the heating section 1024 and the cooling section 1025, the adsorbent in the second buffer section 1028 can isolate the heating section 1024 from the cooling section 1025, prevent the temperatures between the heating section 1024 and the cooling section 1025 from affecting each other, and help improve the working reliability between the heating section 1024 and the cooling section 1025.

[0061] Optionally, the first buffer section 1027 and the second buffer section 1028 have the same height, and the preheating section 1026, the heating section 1024 and the cooling section 1025 have the same height.

[0062] In some embodiments, a feed pipe 10 extending in the up and down directions is respectively provided in the preheating section 1026 , the heating section 1024 and the cooling section 1025 , and the adsorbent passes downward through the preheating section 1026 , the heating section 1024 and the cooling section 1025 through the feed pipe 10 .

[0063] like Figure 1 As shown, a plurality of spaced-apart discharge pipes 10 are provided in the preheating section 1026, the heating section 1024 and the cooling section 1025. The adsorbent is discharged through the discharge pipes 10. When the heat exchange medium exchanges heat with the adsorbent, it can indirectly exchange heat with the heat exchange medium through the discharge pipes 10, thereby avoiding direct contact between the heat exchange medium and the adsorbent to contaminate the adsorbent, which is beneficial to improving the working reliability of the adsorbent.

[0064] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction 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 described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, 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, without contradiction.

[0069] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An adsorption regeneration combined tower, characterized in that: include: A tower body, wherein the inner cavity of the tower body is separated into an adsorption chamber for flue gas adsorption purification and a regeneration chamber for desorption and regeneration of the adsorbent, the adsorption chamber having a flue gas inlet, a flue gas outlet, an adsorbent feeding port and an adsorbent discharge port, the regeneration chamber having a regeneration gas outlet, an adsorbent inlet and an adsorbent outlet, the flue gas inlet being used to convey low-temperature flue gas below room temperature into the adsorption chamber, the flue gas outlet being used to discharge clean flue gas after adsorption, the regeneration gas outlet being used to discharge the regeneration gas in the regeneration chamber, the adsorbent discharge port being communicated with the adsorbent inlet so as to convey the adsorbent discharged from the adsorption chamber into the regeneration chamber for desorption and regeneration, and the adsorbent feeding port being communicated with the adsorbent outlet so as to convey the adsorbent discharged from the regeneration chamber into the adsorption chamber for adsorption and purification of the low-temperature flue gas.

2. The adsorption regeneration combined tower according to claim 1, characterized in that: The adsorbent feeding port is communicated with the adsorbent outlet through a first adsorbent conveying circuit, and the adsorbent discharging port is communicated with the adsorbent inlet through a second adsorbent conveying circuit.

3. The adsorption regeneration combined tower according to claim 1, characterized in that: The adsorption chamber and the regeneration chamber are arranged side by side in a horizontal direction.

4. The adsorption regeneration combined tower according to claim 3, characterized in that: The inner cavity of the tower body is provided with a partition, and the partition divides the inner cavity of the tower body into the adsorption cavity and the regeneration cavity.

5. The adsorption regeneration combined tower according to any one of claims 1 to 4, characterized in that: The regeneration chamber includes a heating section and a cooling section arranged in an up-down direction, the heating section is used to heat the adsorbent to a first temperature to desorb and regenerate the adsorbent, and the cooling section is used to cool the regenerated adsorbent to a second temperature, wherein the first temperature is higher than the second temperature, and a first pipeline is provided between the cooling section and the adsorption chamber, for supplying at least a portion of the clean flue gas discharged from the adsorption chamber to the cooling section as a cooling medium.

6. The adsorption regeneration combined tower according to claim 5, characterized in that: The first pipeline is provided with a first control valve for controlling the flow of the clean flue gas supplied from the adsorption chamber to the cooling section.

7. The adsorption regeneration combined tower according to claim 5, characterized in that: It also includes a heater, which is arranged on a second pipeline connecting the cooling section and the heating section, and is used to heat the cooling medium discharged from the cooling section and then transport it to the heating section as a heating medium.

8. The adsorption regeneration combined tower according to claim 7, characterized in that: The regeneration chamber also has a preheating section located above the heating section, and the preheating section is connected to the heating section through a third pipeline for conveying the heating medium discharged from the heating section into the preheating section as preheating medium.

9. The adsorption regeneration combined tower according to claim 8, characterized in that: The regeneration chamber also has a first buffer section, which is located between the preheating section and the heating section; The inner cavity of the tower body also has a second buffer section, and the second buffer section is located between the heating section and the cooling section.

10. The adsorption regeneration combined tower according to claim 8, characterized in that: Feed pipes extending in the up-down direction are respectively provided in the preheating section, the heating section and the cooling section, and the adsorbent passes downward through the preheating section, the heating section and the cooling section through the feed pipes.

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