Casing type dust removal, cooling and dehydration integrated pre-washing tower and carbon capture system

Abstract

The application discloses a kind of sleeve type dust removal cooling dehydration integrated prewash tower and carbon capture system.Sleeve type dust removal cooling dehydration integrated prewash tower, including tower body, central sleeve, spraying assembly and filler layer.Tower body has gas inlet and gas outlet, the inner chamber of tower body includes the gas inlet cavity and processing cavity that are communicated, gas inlet is communicated with gas inlet cavity, processing cavity is communicated with gas outlet;Center sleeve is arranged in processing cavity, to separate processing cavity into spraying chamber and desulfurization chamber, the outlet end of desulfurization chamber is communicated with gas outlet;Spraying assembly is arranged in the upper portion of spraying chamber, the lower portion of spraying chamber is communicated with gas inlet cavity;Filler layer is arranged in desulfurization chamber, flue gas flows into desulfurization chamber after passing through gas inlet cavity and spraying chamber, filler layer is used to purify flue gas, and purified flue gas is discharged through gas outlet.The application can cool and remove dust to flue gas, improve the prewash effect of flue gas.

Description

Technical Field

[0001] This invention belongs to the field of flue gas treatment technology, specifically relating to a shell-and-tube integrated pre-washing tower for dust removal, cooling, and dehydration, and a carbon capture system. Background Technology

[0002] In related technologies, the pre-washing tower of the carbon capture device is used to cool down and remove dust from the flue gas. However, due to factors such as the lack of a packing layer inside the tower, the gas-liquid contact is insufficient after the flue gas enters the pre-washing tower, resulting in poor cooling and dust removal effects. Since the flue gas discharged during the pre-washing stage carries a large amount of water vapor, the water vapor enters the subsequent carbon capture device, which will affect the operation of the subsequent carbon capture device and affect the subsequent carbon capture efficiency. Summary of the Invention

[0003] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] The inventors recognized that the inlet temperature of flue gas entering the pre-washing tower from a coal-fired power plant is about 50-60 degrees Celsius, while the optimal capture temperature for carbon dioxide should be below 40 degrees Celsius. The capture effect increases appropriately as the temperature decreases. Therefore, effectively reducing the flue gas temperature in the pre-washing section can significantly improve the capture performance of the capture system.

[0005] The inventors also recognized that the flue gas after desulfurization and denitrification still contains a small amount of sulfur dioxide and nitrogen oxides. When these gases enter the carbon capture device, they compete with carbon dioxide, thereby reducing the capture efficiency and accelerating the deterioration of the absorbent, increasing solvent loss and thus increasing operating costs.

[0006] The present invention aims to at least partially solve one of the technical problems in the related art.

[0007] Therefore, embodiments of the present invention propose a sleeve-type integrated dust removal, cooling, and dehydration pre-washing tower with good pre-washing effect on flue gas.

[0008] An embodiment of the present invention also proposes a carbon capture system.

[0009] The integrated pre-washing tower for dust removal, cooling, and dehydration in a sleeve-type structure according to an embodiment of the present invention includes: The tower body has an air inlet and an air outlet. The inner cavity of the tower body includes an air inlet chamber and a processing chamber that are connected to each other. The air inlet is connected to the air inlet chamber, and the processing chamber is connected to the air outlet. A central sleeve is disposed within the processing chamber to divide the processing chamber into a spray chamber and a desulfurization chamber. The middle part of the central sleeve is configured as the spray chamber, the inlet end of the spray chamber is connected to the air inlet chamber, the outer wall of the central sleeve and the inner wall of the tower body are configured as the desulfurization chamber, and the outlet end of the desulfurization chamber is connected to the air outlet. A spray assembly is provided at the upper part of the spray chamber, and the lower part of the spray chamber is connected to the air inlet chamber; A packing layer is provided in the desulfurization chamber. Flue gas flows into the desulfurization chamber after passing through the air inlet chamber and the spray chamber. The packing layer is used to purify the flue gas, and the purified flue gas is discharged through the air outlet.

[0010] In the integrated pre-washing tower for dust removal, cooling, and dehydration of the sleeve-type tube type according to this invention, the flue gas can come into gas-liquid contact with the spray water of the spray assembly when it flows through the spray chamber, thereby cooling and removing dust from the flue gas. After the flue gas enters the desulfurization chamber, it can pass through the packing layer to adsorb and remove particulate matter, sulfur dioxide, nitrogen oxides, and other substances in the flue gas. At the same time, the flue gas will flow back and forth in the spray chamber and the desulfurization chamber, prolonging the flow path of the flue gas in the pre-washing tower, changing the flow direction of the flue gas, and preventing the flue gas from directly carrying water vapor and being discharged from the outlet. It can dehydrate the flue gas to a certain extent during the flow of the flue gas through the desulfurization chamber and improve the pre-washing effect of the flue gas.

[0011] In some embodiments, the desulfurization chamber is provided with a baffle to form a reversal channel in the desulfurization chamber. The reversal channel includes a first section and a second section. The first section is provided with a plurality of guide plates to form a serpentine flow channel in the first section. The packing layer is disposed in the second section.

[0012] In some embodiments, the flue gas in the first section flows from top to bottom, and the flue gas in the second section flows from bottom to top; And / or, the upper end of the first section is connected to the upper part of the spray chamber, the lower end of the first section is connected to the lower end of the second section, and the upper end of the second section is connected to the air outlet.

[0013] In some embodiments, the first section is located between the partition and the central sleeve, a portion of the plurality of guide plates is fixed to the partition, another portion of the guide plates is fixed to the central sleeve, and the projected portions of the guide plates on the partition and the guide plates on the central sleeve overlap in the horizontal plane.

[0014] In some embodiments, a first filter element is provided at the connection between the air inlet chamber and the spray chamber, and a second filter element is provided at the bottom of the desulfurization chamber, wherein the pore size of the second filter element is smaller than that of the first filter element.

[0015] In some embodiments, the top of the spray chamber is provided with a flow guiding component for guiding the flue gas at the top of the spray chamber into the desulfurization chamber. The flow guiding component includes a body portion, the lower end of the outer surface of the body portion is located in the middle of the central sleeve, and the upper end of the outer surface of the body portion is inclined toward the inner wall of the central sleeve.

[0016] In some embodiments, the spray assembly includes a water tank, a pump, and a spray head. The water tank is connected to the air inlet chamber so that fluid flowing into the air inlet chamber can flow into the water tank. The spray head is located at the upper part of the spray chamber. The water inlet of the pump is connected to the water tank, and the water outlet of the pump is connected to the spray head.

[0017] In some embodiments, the side wall of the tower body is provided with an opening corresponding to the desulfurization chamber, and the packing layer is detachably connected to the opening so that the packing layer can be removed from the opening or installed into the desulfurization chamber from the opening; And / or, there are multiple packing layers, and the multiple packing layers are arranged sequentially along the flue gas flow direction in the desulfurization chamber.

[0018] In some embodiments, the upper part of the tower body is provided with an exhaust chamber, which is connected to the exhaust port and the desulfurization chamber. The exhaust chamber is provided with a gas-liquid separation component, which is used to remove water from the purified flue gas. And / or, the tower body is provided with an observation window, which is used to observe the state of the spray chamber and / or the desulfurization chamber.

[0019] The carbon capture system of this invention includes the integrated pre-washing tower for dust removal, cooling, and dehydration described in any of the above embodiments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the integrated pre-washing tower for dust removal, cooling, and dehydration in a sleeve-type structure according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of a sleeve-type integrated dust removal, cooling, and dehydration pre-washing tower according to an embodiment of the present invention.

[0022] Figure label: 1. Tower body; 11. Air inlet chamber; 12. Processing chamber; 121. Spray chamber; 122. Desulfurization chamber; 1221. First section; 1222. Second section; 13. Air inlet; 14. Air outlet; 15. Air outlet chamber; 16. Baffle; 17. Opening; 18. Guide plate; 2. Central sleeve; 21. Drainage component; 3. Sprinkler assembly; 31. Water tank; 32. Pump; 33. Sprinkler head; 4. Packing layer; 5. Observation window; 61. First filter element; 62. Second filter element; 7. Gas-liquid separation component. Detailed Implementation

[0023] 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.

[0024] See Figure 1 and Figure 2 The integrated pre-washing tower for dust removal, cooling and dehydration in the sleeve type of the present invention includes a tower body 1, a central sleeve 2, a spray assembly 3 and a packing layer 4.

[0025] The tower body 1 can be a columnar tower body 1, with an air inlet 13 and an air outlet 14. The air inlet 13 is located at the lower part of the tower body 1, and the air outlet 14 is located at the top of the tower body 1. The inner cavity of the tower body 1 includes a connected air inlet chamber 11 and a processing chamber 12, which are arranged opposite each other in the vertical direction. The processing chamber 12 is located above the air inlet chamber 11. The air inlet 13 communicates with the air inlet chamber 11, and the processing chamber 12 communicates with the air outlet 14. Flue gas can enter the air inlet chamber 11 through the air inlet 13. As the flue gas continues to flow upward, it can flow into the processing chamber 12, where it undergoes pre-washing treatment before being discharged through the air outlet 14.

[0026] The central sleeve 2 is located inside the treatment chamber 12. The central sleeve 2 and the tower body 1 can be arranged coaxially. The tower body 1 can be a cylindrical tower body 1 or a tower body 1 with a rectangular cross-section. The central sleeve 2 can be a cylindrical sleeve or a rectangular sleeve. The central sleeve 2 can divide the treatment chamber 12 into a spray chamber 121 and a desulfurization chamber 122. The middle part of the central sleeve 2 is the spray chamber 121. The inlet end of the spray chamber 121 is connected to the air inlet chamber 11. The outer wall of the central sleeve 2 and the inner wall of the tower body 1 form the desulfurization chamber 122. The outlet end of the desulfurization chamber 122 is connected to the air outlet 14.

[0027] The flue gas first flows into the bottom of the spray chamber 121 from the inlet chamber 11, then flows upward to the top of the spray chamber 121. Subsequently, the flue gas flows back into the desulfurization chamber 122. At least a portion of the flue gas in the desulfurization chamber 122 can flow downward, thereby causing the flue gas to flow back and forth in the spray chamber 121 and the desulfurization chamber 122. This prevents the flue gas from being directly discharged upward from the exhaust port, increases the flow time of the flue gas in the treatment chamber 12, and improves the treatment effect.

[0028] The spray assembly 3 is located at the upper part of the spray chamber 121, and the lower part of the spray chamber 121 is connected to the air inlet chamber 11. The spray assembly 3 can be located in the upper middle part of the spray chamber 121. The spray assembly 3 is used to spray water into the spray chamber 121. The water is sprayed from top to bottom, and the flue gas in the spray chamber 121 flows from bottom to top, thereby achieving more complete contact between the flue gas and water, thereby removing dust and cooling the flue gas. Some of the water will turn into water vapor and flow into the desulfurization chamber 122 with the flue gas.

[0029] The packing layer 4 is located inside the desulfurization chamber 122. Flue gas flows into the desulfurization chamber 122 after passing through the inlet chamber 11 and the spray chamber 121. The packing layer 4 is used to purify the flue gas, and the purified flue gas is discharged through the outlet 14. The packing layer 4 can adsorb and filter particulate matter, sulfur dioxide, nitrogen oxides and other substances in the flue gas. At the same time, water vapor can also be removed when passing through the packing layer 4, thereby reducing the water vapor content of the flue gas discharged from the outlet 14.

[0030] In the integrated pre-washing tower for dust removal, cooling, and dehydration of the sleeve type in this embodiment of the invention, the flue gas can come into gas-liquid contact with the spray water of the spray component 3 when it flows through the spray chamber 121, thereby cooling and removing dust from the flue gas. After the flue gas enters the desulfurization chamber 122, it can pass through the packing layer 4, thereby adsorbing and removing particulate matter, sulfur dioxide, nitrogen oxides and other substances in the flue gas. At the same time, the flue gas will flow back and forth in the spray chamber 121 and the desulfurization chamber 122, prolonging the flow path of the flue gas in the pre-washing tower, changing the flow direction of the flue gas, and preventing the flue gas from directly carrying water vapor and being discharged from the outlet 14. It can dehydrate the flue gas to a certain extent during the flow of the flue gas through the desulfurization chamber 122 and improve the pre-washing effect of the flue gas.

[0031] In this embodiment, after the flue gas is pretreated by the integrated pre-washing tower for dust removal, cooling and dehydration, the contents of water vapor, sulfur dioxide, nitrogen oxides and particulate matter inside are effectively removed, which has little impact on the subsequent carbon capture device, can ensure the normal and stable operation of the carbon capture device and improve the carbon capture effect.

[0032] In some embodiments, a baffle 16 is provided inside the desulfurization chamber 122 to form a reversal channel within the desulfurization chamber 122. The reversal channel includes a first section 1221 and a second section 1222. A plurality of guide plates 18 are provided in the first section 1221 to form a serpentine flow path within the first section 1221, and a packing layer 4 is disposed in the second section 1222. The baffle 16 is disposed inside the desulfurization chamber 122, thereby dividing the desulfurization chamber 122 into a reversal channel for flue gas reversal flow, which can extend the flow path of the flue gas and improve the flue gas treatment effect.

[0033] The reversing channel in this embodiment includes a first section 1221 and a second section 1222. A guide plate 18 is provided in the first section 1221, which can form a serpentine flow channel. When the flue gas flows in the serpentine flow channel, it can contact and collide with the baffle 16, the central sleeve 2 and the guide plate 18, so that water vapor condenses on the wall surface and flows down the wall surface, which can achieve preliminary dehydration.

[0034] After the flue gas flows into the second section 1222, the particulate matter, sulfur dioxide, nitrogen oxides and other substances in the flue gas are removed by the packing layer 4 arranged in the second section 1222, thereby improving the purification effect.

[0035] Furthermore, the flue gas in the first section 1221 flows from top to bottom, and the flue gas in the second section 1222 flows from bottom to top. In this embodiment, the partition 16 can be a sleeve that is substantially coaxial with the central sleeve 2. Thus, the first section 1221 is an annular channel for flue gas to flow from top to bottom, and the second section 1222 is an annular channel for flue gas to flow from bottom to top.

[0036] In this embodiment, the upper end of the central sleeve 2 has an upper cover plate. In order to realize the communication between the spray chamber 121 in the middle of the central sleeve 2 and the channel of the first section 1221, a flow hole can be opened on the side wall of the upper end of the central sleeve 2.

[0037] The upper end of the first section 1221 is connected to the upper part of the spray chamber 121, the lower end of the first section 1221 is connected to the lower end of the second section 1222, and the upper end of the second section 1222 is connected to the air outlet 14.

[0038] In some embodiments, the first section 1221 is located between the partition 16 and the central sleeve 2. Parts of a plurality of guide plates 18 are fixed to the partition 16, and other parts of the guide plates 18 are fixed to the central sleeve 2. The projections of the guide plates 18 on the partition 16 and the guide plates 18 on the central sleeve 2 on the horizontal plane overlap. When flue gas flows through the first section 1221, the collision and contact effect between the flue gas and the guide plates 18, the sidewalls of the partition 16, and the sidewalls of the central sleeve 2 is improved. This facilitates the condensation of water vapor in the flue gas after contacting the guide plates 18 and the corresponding sidewalls, allowing it to slide downwards for easy collection. The guide plates 18 on the partition 16 and the guide plates 18 on the central sleeve 2 are staggered and partially overlapped, thereby preventing the flue gas from flowing straight up and down, allowing it to frequently zigzag within a small area, thus improving the condensation effect of water vapor.

[0039] In some embodiments, a first filter element 61 is provided at the connection between the air inlet chamber 11 and the spray chamber 121, and a second filter element 62 is provided at the bottom of the desulfurization chamber 122. The pore size of the second filter element 62 is smaller than that of the first filter element 61. The first filter element 61 may include a first filter screen disposed at the connection between the air inlet chamber 11 and the spray chamber 121. The first filter screen can filter large particulate impurities and ensure the connection between the air inlet chamber 11 and the spray chamber 121, facilitating the flow of flue gas from the air inlet chamber 11 into the spray chamber 121. The second filter element 62 is located at the bottom of the desulfurization chamber 122. This allows water condensed in the desulfurization chamber 122 to flow into the air inlet chamber 11 after reaching the bottom of the desulfurization chamber 122. The second filter element 62 may include a baffle and a second filter screen. The baffle is located at the bottom of the desulfurization chamber 122 to isolate most of the area between the desulfurization chamber 122 and the air inlet chamber 11. A through hole may be provided in the middle of the baffle, and the second filter screen is located at the through hole. This allows water at the bottom of the desulfurization chamber 122 to flow into the air inlet chamber 11 through the second filter screen. To prevent the air inlet chamber 11 and the desulfurization chamber 122 from being directly connected through the through hole, the aperture of the second filter screen or the aperture size of the through hole can be controlled. This ensures that there is always a certain amount of water at the bottom of the desulfurization chamber 122, ensuring that the gas flow can be blocked at this position, allowing the liquid to flow down.

[0040] In some embodiments, a flow guide 21 is provided at the top of the spray chamber 121. The flow guide 21 is used to guide the flue gas at the top of the spray chamber 121 into the desulfurization chamber 122. The flow guide 21 includes a body portion. The lower end of the outer surface of the body portion is located in the middle of the central sleeve 2, and the upper end of the outer surface of the body portion is inclined toward the inner wall of the central sleeve 2.

[0041] In this embodiment, the diversion component 21 can guide the flue gas in the spray chamber 121 to flow to the surrounding areas and then into the desulfurization chamber 122, reducing the air resistance of the flue gas and ensuring the smooth flow of the flue gas.

[0042] The main body of the drainage component 21 can be inverted cone shape, and the cross-sectional dimensions of the main body gradually increase from top to bottom.

[0043] In some embodiments, the spray assembly 3 includes a water tank 31, a pump 32, and a spray head 33. The water tank 31 is connected to the air inlet chamber 11 so that fluid flowing into the air inlet chamber 11 can flow into the water tank 31. The spray head 33 is located at the upper part of the spray chamber 121. The water inlet end of the pump 32 is connected to the water tank 31, and the water outlet end of the pump 32 is connected to the spray head 33. The water tank 31 is connected to the air inlet chamber 11, so water flowing into the air inlet chamber 11 from the treatment chamber 12 can flow into the water tank 31, or the lower part of the air inlet chamber 11 can be used as the water tank 31. When the water tank 31 and the air inlet chamber 11 are arranged separately, a filter component and a treatment component can be provided between the water tank 31 and the air inlet chamber 11 to filter and condition the water in the air inlet chamber 11 before it flows into the water tank 31, preventing impurities or harmful substances from re-entering the spray chamber 121 through the spray head 33.

[0044] In this embodiment, spray pipes can be arranged in the spray chamber 121, and multiple spray heads 33 can be arranged on each spray pipe. Multiple sets of spray pipes are arranged in different horizontal planes. Each set of spray pipes includes multiple spray pipes arranged side by side in the same horizontal plane to ensure that the spray water in the spray chamber 121 is uniform and consistent. The spray head 33 can be an atomizing spray head 33, which can make the liquid spray downward in a mist, thereby improving the atomization spraying effect.

[0045] In some embodiments, the side wall of the tower body 1 is provided with an opening 17, which corresponds to the desulfurization chamber 122. The packing layer 4 is detachably connected to the opening 17, so that the packing layer 4 can be removed from or installed into the desulfurization chamber 122 through the opening 17. In this embodiment, the packing layer 4 can be a modular design, or a drawer-type packing layer 4, which can be pulled out to be installed into or removed from the desulfurization chamber 122. The outside of the packing layer 4 is detachably connected to the tower body 1, for example, by means of fasteners or bolts.

[0046] This embodiment allows for easy replacement of the packing layer 4, which can be an activated carbon packing layer 4.

[0047] In this embodiment, there are multiple packing layers 4, which are arranged sequentially along the flue gas flow direction in the desulfurization chamber 122, thereby achieving multi-stage filtration and removal of flue gas and improving the flue gas treatment effect.

[0048] In some embodiments, the upper part of the tower body 1 is provided with an exhaust chamber 15, which is connected to the exhaust port 14 and the desulfurization chamber 122. The exhaust chamber 15 is provided with a gas-liquid separation component 7, which is used to remove water from the purified flue gas.

[0049] The gas-liquid separation component 7 may include multiple bent plates arranged side by side, with a flow gap formed between adjacent bent plates. When flue gas flows through the flow gap, the internal water vapor condenses, thereby achieving gas-liquid separation. A cooling component can also be arranged to cool the flue gas and improve the water vapor condensation efficiency. Alternatively, an air-cooled pipe can be arranged, passing through the outlet chamber 15. An air pump 32 drives the gas flow within the air-cooled pipe, thereby utilizing the external atmosphere to cool the gas in the outlet chamber 15. The cooling component or air-cooled pipe can be located on the air inlet side of the gas-liquid separation component 7 to facilitate the cooled flue gas entering the flow gap between the bent plates.

[0050] In this embodiment, the gas-liquid separation component 7 can work with the return channel and the packing layer 4 to dehydrate the gas, thereby reducing the water vapor content in the flue gas and preventing the water vapor from diluting the adsorption solution during the subsequent carbon capture process, thus ensuring the sustainable and stable operation of carbon capture.

[0051] Optionally, the tower body 1 is provided with an observation window 5, which is used to observe the status inside the spray chamber 121 and / or the desulfurization chamber 122, so as to make it convenient to observe the working conditions inside the spray chamber 121 and the desulfurization chamber 122 intuitively. A camera device can be installed at the observation window 5 to transmit the internal image information to the display screen for convenient remote viewing.

[0052] The carbon capture system of this invention includes a pre-washing tower with integrated dust removal, cooling, and dehydration as described in any of the above embodiments. The carbon capture system also includes a carbon capture device, such as an absorption tower and a regeneration tower. The flue gas first passes through the integrated pre-washing tower with integrated dust removal, cooling, and dehydration, and then enters the absorption tower for carbon capture. The flue gas entering the absorption tower has low levels of particulate matter and other harmful gases, which will not pollute the adsorption solution, reduce the loss of the adsorption solution, and ensure the effectiveness and efficiency of carbon dioxide capture.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature 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 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 that the first feature is at a lower horizontal level than the second feature.

[0057] 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.

[0058] Although embodiments of the present invention have been shown and described above, 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 sleeve-type integrated dust removal, cooling, and dehydration pre-washing tower, characterized in that, include: The tower body has an air inlet and an air outlet. The inner cavity of the tower body includes an air inlet chamber and a processing chamber that are connected to each other. The air inlet is connected to the air inlet chamber, and the processing chamber is connected to the air outlet. A central sleeve is disposed within the processing chamber to divide the processing chamber into a spray chamber and a desulfurization chamber. The middle part of the central sleeve is configured as the spray chamber, the inlet end of the spray chamber is connected to the air inlet chamber, the outer wall of the central sleeve and the inner wall of the tower body are configured as the desulfurization chamber, and the outlet end of the desulfurization chamber is connected to the air outlet. A spray assembly is provided at the upper part of the spray chamber, and the lower part of the spray chamber is connected to the air inlet chamber; A packing layer is provided in the desulfurization chamber. Flue gas flows into the desulfurization chamber after passing through the air inlet chamber and the spray chamber. The packing layer is used to purify the flue gas, and the purified flue gas is discharged through the air outlet.

2. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 1, characterized in that, The desulfurization chamber is equipped with a baffle to form a reversal channel within the desulfurization chamber. The reversal channel includes a first section and a second section. The first section is equipped with multiple guide plates to form a serpentine flow channel within the first section. The packing layer is disposed within the second section.

3. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 2, characterized in that, The flue gas in the first section flows from top to bottom, while the flue gas in the second section flows from bottom to top. And / or, the upper end of the first section is connected to the upper part of the spray chamber, the lower end of the first section is connected to the lower end of the second section, and the upper end of the second section is connected to the air outlet.

4. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 2, characterized in that, The first section is located between the partition and the central sleeve. Parts of the plurality of guide plates are fixed on the partition, and other parts of the guide plates are fixed on the central sleeve. The projections of the guide plates on the partition and the guide plates on the central sleeve on the horizontal plane overlap.

5. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 1, characterized in that, A first filter element is provided at the connection between the air inlet chamber and the spray chamber, and a second filter element is provided at the bottom of the desulfurization chamber. The pore size of the second filter element is smaller than that of the first filter element.

6. The integrated pre-washing tower for dust removal, cooling, and dehydration according to any one of claims 1 to 5, characterized in that, The top of the spray chamber is provided with a flow guiding component, which is used to guide the flue gas at the top of the spray chamber into the desulfurization chamber. The flow guiding component includes a body part, the lower end of the outer surface of the body part is located in the middle of the central sleeve, and the upper end of the outer surface of the body part is inclined towards the inner wall of the central sleeve.

7. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 1, characterized in that, The spray assembly includes a water tank, a pump, and spray heads. The water tank is connected to the air inlet chamber so that the fluid flowing into the air inlet chamber can flow into the water tank. The spray heads are located at the top of the spray chamber. The water inlet of the pump is connected to the water tank, and the water outlet of the pump is connected to the spray heads.

8. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 1, characterized in that, The tower body has an opening on its side wall, which corresponds to the desulfurization chamber. The packing layer is detachably connected to the opening so that the packing layer can be removed from the opening or installed into the desulfurization chamber from the opening. And / or, there are multiple packing layers, and the multiple packing layers are arranged sequentially along the flue gas flow direction in the desulfurization chamber.

9. The integrated pre-washing tower for dust removal, cooling, and dehydration as described in claim 1, characterized in that, The upper part of the tower body is provided with an exhaust chamber, which is connected to the exhaust port and the desulfurization chamber. The exhaust chamber is provided with a gas-liquid separation component, which is used to remove water from the purified flue gas. And / or, the tower body is provided with an observation window, which is used to observe the state of the spray chamber and / or the desulfurization chamber.

10. A carbon capture system, characterized in that, The included casing-type integrated dust removal, cooling, and dehydration pre-washing tower according to any one of claims 1 to 9.

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