Moving bed type flue gas cleaning device

Abstract

This utility model discloses a mobile bed-type flue gas purification device, comprising: a shell, with an air inlet on the lower surface and an air outlet on the upper surface; multiple partitions inside the shell dividing the space into multiple flue gas channels, each partition having a flue gas passage; two inlet and outlet channels, each flue gas channel being connected to the two inlet and outlet channels at its left and right ends via openable and closable flue gas channel valves; multiple flue gas purification modules, each flue gas channel containing multiple flue gas purification modules; multiple conveying devices, each disposed within one of the multiple flue gas channels; and two inlet and outlet devices, each disposed within one of the two inlet and outlet channels. The mobile bed-type flue gas purification device according to this utility model has advantages such as good purification effect, no need for downtime replacement, and adjustable purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification technology, and more specifically, to a mobile bed type flue gas purification device. Background Technology

[0002] The flue gas produced by burning fossil fuels contains a large number of pollutants.

[0003] The flue gas purification devices in related technologies use fixed-bed reactors to remove pollutants from flue gas. However, the flue gas purification effect of catalysts and adsorbents will decrease with the extension of the usage time. After long-term use, they need to be replaced. Replacement requires shutdown operation, which seriously affects the flue gas purification efficiency and the production efficiency of enterprises. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a mobile bed flue gas purification device, which has the advantages of good purification effect, no need to stop for replacement, and adjustable purification efficiency.

[0005] To achieve the above objectives, a moving bed type flue gas purification device is proposed according to an embodiment of this utility model. The moving bed type flue gas purification device includes: a housing, with an air inlet on the lower surface and an air outlet on the upper surface; multiple partitions spaced vertically and oriented horizontally along the length direction within the housing, dividing the space within the housing into multiple flue gas channels; each partition having a flue gas outlet, with one of two adjacent partitions having its flue gas outlet located on the left and the other on the right; and two inlet and outlet channels. Two inlet and outlet channels are respectively located on the left and right sides of the housing. The left and right ends of each flue gas channel are connected to the two inlet and outlet channels through openable and closable flue gas channel valves. Multiple flue gas purification modules are provided in each flue gas channel. Multiple conveying devices are respectively located in the multiple flue gas channels and are adapted to convey the flue gas purification modules to the inlet and outlet channels. Two inlet and outlet devices are respectively located in the two inlet and outlet channels and are adapted to convey the flue gas purification modules to the flue gas channels.

[0006] The mobile bed flue gas purification device according to the embodiments of this utility model has the advantages of good purification effect, no need to stop for replacement, and adjustable purification efficiency.

[0007] In addition, the mobile bed flue gas purification device according to the above embodiments of this utility model may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the conveying direction of each of the conveying devices is opposite to the flue gas flow direction in the flue gas channel.

[0009] According to one embodiment of the present invention, the conveying device includes a conveyor belt and a driving device. The driving device is adapted to drive the conveyor belt to move. The conveyor belt is mesh-like. A flexible sealing layer is provided between the conveyor belt and the partition below. A support mesh is provided inside the flue gas inlet.

[0010] According to one embodiment of the present invention, the flue gas purification module is fitted with the flue gas channel with a clearance.

[0011] According to one embodiment of the present invention, each flue gas passage is provided with a plurality of flue gas purification modules, and the plurality of flue gas purification modules in each flue gas passage are spaced apart in the left-right direction.

[0012] According to one embodiment of the present invention, the diameter of the flue gas inlet is greater than or equal to 1.5 times the side length of the flue gas purification module.

[0013] According to one embodiment of the present invention, each of the feeding and discharging devices includes: a lifting platform, which is movably disposed within the feeding and discharging channel; and a feeding and discharging conveyor belt device, which is disposed on the lifting platform and adapted to drive the flue gas purification module on the feeding and discharging conveyor belt device to move to the flue gas channel.

[0014] According to one embodiment of the present invention, the upper and lower ends of the inlet and outlet channels are provided with openable and closable inlet and outlet channel valves.

[0015] According to one embodiment of the present invention, a pollutant concentration detection device is provided at the air outlet.

[0016] According to one embodiment of the present invention, the flue gas purification module has a catalyst and / or adsorbent for purifying flue gas, and the types of catalysts and / or adsorbents of the flue gas purification modules in the plurality of flue gas channels are different.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a mobile bed flue gas purification device according to an embodiment of the present utility model.

[0020] Figure 2 This is a partial structural schematic diagram of a mobile bed flue gas purification device according to an embodiment of the present utility model.

[0021] Figure 3 This is a partial exploded view of the mobile bed flue gas purification device according to an embodiment of the present utility model.

[0022] Reference numerals: 1. Moving bed type flue gas purification device; 10. Shell; 11. Air inlet; 12. Air outlet; 13. Partition; 14. Flue gas passage; 15. Flue gas passage valve; 16. Material inlet / outlet passage; 20. Material inlet / outlet passage valve; 21. Flue gas purification module; 30. Conveyor belt; 41. Flexible sealing layer; 42. Support net; 43. Detailed Implementation

[0023] This application is based on the findings and understanding of the following facts and issues:

[0024] The flue gas purification devices in related technologies use fixed-bed reactors to remove pollutants from flue gas. However, the flue gas purification effect of catalysts and adsorbents will decrease with the extension of the usage time. After long-term use, they need to be replaced. Replacement requires shutdown operation, which seriously affects the flue gas purification efficiency and the production efficiency of enterprises.

[0025] In addition, the concentration of pollutants in flue gas will change with the fuel and load, and the purification effect of catalysts and adsorbents will gradually decrease over time. If the flue gas volume is large or the concentration is high enough to exceed the purification capacity of catalysts and adsorbents, it will be difficult to guarantee the purification effect.

[0026] Some flue gas purification devices in related technologies adopt a moving bed method, which achieves the adsorption and purification effect by allowing the adsorbent to fall freely from top to bottom and come into contact with the flue gas moving from bottom to top, and can realize the renewal of the adsorbent.

[0027] However, since the adsorbent moves downwards by free fall at a fixed and relatively fast speed, it is still difficult to guarantee the purification effect when the flue gas volume is large or the pollutant concentration is high.

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The following description, with reference to the accompanying drawings, describes a mobile bed-type flue gas purification device 1 according to an embodiment of the present invention.

[0032] like Figures 1-3 As shown, the mobile bed flue gas purification device 1 according to an embodiment of the present utility model includes a housing 10, two inlet and outlet channels 20, multiple flue gas purification modules 30, multiple conveying devices, and two inlet and outlet devices.

[0033] The lower surface of the housing 10 is provided with an air inlet 11 and the upper surface is provided with an air outlet 12 (as shown by the arrows in the figure in the vertical and horizontal directions). The housing 10 is provided with a plurality of partitions 13 that are spaced apart in the vertical direction and oriented in the horizontal direction along the length direction. The plurality of partitions 13 divide the space inside the housing 10 into a plurality of flue gas channels 14. Each partition 13 is provided with a flue gas outlet 15. The flue gas outlet 15 of one of the two adjacent partitions 13 is located at the left end and the flue gas outlet 15 of the other is located at the right end.

[0034] Two inlet and outlet channels 20 are respectively located on the left and right sides of the housing 10. The left and right ends of each flue gas channel 14 are connected to the two inlet and outlet channels 20 through openable and closable flue gas channel valves 16.

[0035] Each flue gas passage 14 is equipped with multiple flue gas purification modules 30.

[0036] The multiple conveying devices are respectively installed in multiple flue gas channels 14 and are adapted to convey the flue gas purification module 30 to the inlet and outlet channels 20.

[0037] The two feeding and discharging devices are respectively located in the two feeding and discharging channels 20 and are adapted to transport the flue gas purification module 30 to the flue gas channel 14.

[0038] Specifically, the flue gas purification module 30 has a catalyst and / or adsorbent for purifying flue gas. For example, the flue gas purification module 30 may be the catalyst and / or adsorbent itself, or the catalyst and / or adsorbent may be contained within a container.

[0039] Figure 1 The arrows in the image indicate the direction of flue gas flow, such as... Figure 1 As shown, after entering through the air inlet 11, the flue gas passes through the flue gas passage 14 and then through the flue gas outlet 15 into the next flue gas passage 14, until it passes through multiple flue gas passages 14 in sequence and is then discharged from the air outlet 12. As the flue gas passes through each flue gas passage 14, the flue gas purification module 30 within each flue gas passage 14 purifies the flue gas, ensuring that the flue gas is purified by multiple flue gas purification modules 30 within multiple flue gas passages 14 before being discharged through the air outlet 12.

[0040] When the purification effect of the flue gas purification module 30 decreases with the increase of usage time, the flue gas channel valve 16 of the corresponding flue gas channel 14 can be opened, and the old flue gas purification module 30 with poor purification effect can be transported to the inlet and outlet channel 20 through the conveying device, and the new flue gas purification module 30 with good purification effect can be transported to the flue gas channel 14 through the inlet and outlet device, so that the flue gas purification module 30 in the flue gas channel 14 can be replaced.

[0041] Since the concentration of pollutants in flue gas changes with the fuel and load, and the purification efficiency of catalysts and / or adsorbents gradually decreases over time, the overall purification efficiency of flue gas purification module 30 in flue gas channel 14 can be adjusted by adjusting the conveying efficiency of the conveying device and the feeding and discharging device, thereby enabling dynamic adjustment of purification efficiency according to changes in the concentration of pollutants in the flue gas.

[0042] For example, when the concentration of pollutants in the flue gas is high, the conveying efficiency of the conveying device and the feeding and discharging device can be accelerated, and new flue gas purification modules 30 with better purification effects can be added to the flue gas channel 14 in a timely manner to improve the overall purification effect; when the concentration of pollutants in the flue gas is low, the old flue gas purification modules 30 with poorer purification effects can also meet the purification effect, and the conveying efficiency of the conveying device and the feeding and discharging device can be slowed down to avoid wasting catalysts and / or adsorbents.

[0043] The flue gas passage valve 16 can be closed when the flue gas purification module 30 does not need to be replaced to prevent flue gas from entering the feed and discharge passages 20.

[0044] According to the embodiment of the present invention, the mobile bed type flue gas purification device 1 has multiple partitions 13 arranged inside the housing 10. The multiple partitions 13 divide the space inside the housing 10 into multiple flue gas channels 14. Each partition 13 is provided with a flue gas inlet 15. The flue gas inlet 15 of one of the two adjacent partitions 13 is located at the left end and the flue gas inlet 15 of the other is located at the right end. Compared with the flue gas purification devices in the related art where the flue gas flows in a straight line from bottom to top, this allows the flue gas to flow in an S-shaped meandering manner inside the housing 10, prolonging the time the flue gas stays in the housing 10, allowing the flue gas to fully contact the flue gas purification module 30, and improving the purification effect of the flue gas.

[0045] Furthermore, by setting up the inlet and outlet channels 20, the conveying device, and the inlet and outlet device, the old flue gas purification module 30 can be sent out of the flue gas channel 14 by the conveying device, and the new flue gas purification module 30 can be added into the flue gas channel 14 by the inlet and outlet device. Compared with the fixed bed flue gas purification device in related technologies, the flue gas purification module 30 can be updated in real time without the need for shutdown and replacement, which can ensure the flue gas purification efficiency and avoid affecting the production efficiency of enterprises.

[0046] Furthermore, by setting up conveying devices and feeding / discharging devices, the conveying efficiency of the conveying devices and feeding / discharging devices can be adjusted, thereby adjusting the replacement efficiency of the flue gas purification module 30. This, in turn, adjusts the ratio of new and old flue gas purification modules 30 within the flue gas channel 14, and adjusts the overall purification efficiency of the flue gas purification module 30 within the flue gas channel 14. Thus, the purification efficiency can be dynamically adjusted according to changes in the concentration of pollutants in the flue gas to adapt to different purification needs. Compared with flue gas purification devices in related technologies, this method can improve the flue gas purification effect when the concentration of pollutants in the flue gas is high, and can also reduce the replacement efficiency of the flue gas purification module 30 when the concentration of pollutants is low to avoid wasting the flue gas purification module 30.

[0047] Therefore, the mobile bed flue gas purification device 1 according to the present utility model has the advantages of good purification effect, no need to stop for replacement, and adjustable purification efficiency.

[0048] The following description, with reference to the accompanying drawings, describes a mobile bed-type flue gas purification device 1 according to a specific embodiment of the present invention.

[0049] In some specific embodiments of this utility model, such as Figures 1-3 As shown, the mobile bed flue gas purification device 1 according to an embodiment of the present utility model includes a housing 10, two inlet and outlet channels 20, multiple flue gas purification modules 30, multiple conveying devices, and two inlet and outlet devices.

[0050] Advantageously, the conveying direction of each of the conveying devices is opposite to the flue gas flow direction within the flue gas passage 14. Specifically, with Figure 2 For example, Figure 2 The flue gas flows from right to left, and the flue gas purification module 30 moves from left to right under the drive of the conveying device. This ensures that the moving direction of the flue gas purification module 30 is opposite to the flow direction of the flue gas, preventing the flue gas from not fully contacting the flue gas purification module 30 due to synchronous movement, thereby improving the purification effect of the flue gas purification module 30 on the flue gas.

[0051] Specifically, such as Figure 2 and Figure 3 As shown, the conveying device includes a conveyor belt 41 and a driving device. The driving device is adapted to drive the conveyor belt 41 to move. The conveyor belt 41 is mesh-like, and a flexible sealing layer 42 is provided between the conveyor belt 41 and the lower partition 13. A support mesh 43 is provided inside the flue gas inlet 15. Specifically, the flexible sealing layer 42 is provided on... Figure 2 In section AB, support net 43 is set up in Figure 2 In section BC, the flexible sealing layer 42 can be made of a high-temperature resistant material to prevent damage from high-temperature flue gas. The mesh conveyor belt 41 allows flue gas to pass through the flue gas inlet 15 while ensuring the transport of the flue gas purification module 30. The flexible sealing layer 42 seals the gap between the conveyor belt 41 and the partition 13, preventing flue gas from passing between the conveyor belt 41 and the partition 13 without passing through the flue gas purification module 30 on the conveyor belt 41. This allows as much of the flue gas as possible to pass through the flue gas purification module 30 to ensure the purification effect. The support mesh 43 supports the flue gas purification module 30 while allowing flue gas to pass through the flue gas inlet 15.

[0052] More specifically, the flue gas purification module 30 is fitted with the flue gas channel 14 with a gap. This reduces the amount of flue gas passing through the gap between the flue gas purification module 30 and the flue gas channel 14, allowing the flue gas to pass through the flue gas purification module 30 as much as possible, thus improving the purification effect of the flue gas.

[0053] Optionally, each flue gas passage 14 is provided with multiple flue gas purification modules 30, which are spaced apart in the left-right direction. This can improve the purification effect of the flue gas without increasing the resistance to the flue gas, allowing the flue gas to flow smoothly in the flue gas passage 14, so that the flue gas can pass smoothly through the multiple flue gas purification modules 30 for purification.

[0054] More advantageously, the diameter of the flue gas inlet 15 is greater than or equal to 1.5 times the side length of the flue gas purification module 30. Preferably, the diameter of the flue gas inlet 15 is equal to twice the side length of the flue gas purification module 30. This can prevent the flue gas purification module 30 from clogging the flue gas inlet 15 and ensure that the flue gas can pass through the flue gas inlet 15 smoothly.

[0055] In some embodiments, each of the feeding / discharging devices includes a lifting platform and a feeding / discharging conveyor belt device. The lifting platform is vertically movably disposed within the feeding / discharging channel 20. The feeding / discharging conveyor belt device is disposed on the lifting platform and is adapted to drive the flue gas purification module 30 on the feeding / discharging conveyor belt device to move to the flue gas channel 14. Specifically, the lifting device is adapted to stop at the height of any flue gas channel 14 so that the feeding / discharging conveyor belt device can transport the flue gas purification module 30 onto the conveyor belt 41 within the flue gas channel 14. This facilitates the transport of the flue gas purification module 30 within the feeding / discharging channel 20 and facilitates the replenishment of the flue gas purification module 30 into the flue gas channel 14.

[0056] Specifically, each infeed / outfeed channel 20 may be equipped with multiple infeed / outfeed devices to facilitate the simultaneous replacement of flue gas purification modules 30 in multiple flue gas channels 14.

[0057] Specifically, such as Figure 1 As shown, the inlet and outlet channels 20 are equipped with openable and closable inlet and outlet channel valves 21 at both ends. Specifically, the inlet and outlet channel valves 21 remain closed during periods other than when new flue gas purification modules 30 are added to the inlet and outlet channel 20 or when old flue gas purification modules 30 are cleaned. In particular, when the flue gas channel valve 16 is open, the inlet and outlet channel valves 21 remain closed. This prevents flue gas from leaking out of the inlet and outlet channel 20 and reduces the amount of flue gas entering the inlet and outlet channel 20 due to air pressure, thereby further preventing flue gas leakage. In this way, the inlet and outlet channel valves 21 can be opened when it is necessary to add or clean the flue gas purification modules 30 to facilitate the entry or exit of the flue gas purification modules 30, and can be closed when it is not necessary to add or clean the flue gas purification modules 30 to prevent flue gas leakage.

[0058] Advantageously, pollutant concentration detection devices are installed at the air outlets 12. Specifically, the pollutant concentration detection devices can be electrically connected to the conveying device and the infeed / discharge device to adjust the conveying efficiency of the conveying device and the infeed / discharge device according to the pollutant concentration detected by the detection device. For example, when the pollutant concentration detected by the detection device exceeds a predetermined value, the conveying efficiency of the conveying device and the infeed / discharge device is increased. This enables automatic adjustment of the replacement efficiency of the flue gas purification module 30 according to the pollutant concentration, achieving real-time automatic adjustment of the purification efficiency.

[0059] More specifically, the flue gas purification module 30 has a catalyst and / or adsorbent for purifying flue gas, and the types of catalysts and / or adsorbents in the multiple flue gas channels 14 are different. In this way, different types of flue gas purification modules 30 can be used to purify different types of pollutants, and the purification efficiency of different types of pollutants can be adjusted by combining the conveying device and the feeding and discharging device.

[0060] For example, the flue gas purification modules 30 within the multiple flue gas channels 14 can be used to purify nitrogen oxides, sulfur dioxide, carbon monoxide, and halides, respectively. When the sulfur content in the fuel is high, leading to an increase in sulfur dioxide content in the flue gas, the conveying efficiency of the flue gas purification module 30 used for purifying sulfur dioxide can be improved, thereby increasing the purification efficiency for sulfur dioxide.

[0061] Other components and operations of the mobile bed flue gas purification device 1 according to the embodiments of the present utility model are known to those skilled in the art and will not be described in detail here.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A moving bed flue gas cleaning device, characterized in that include: The housing has an air inlet on its lower surface and an air outlet on its upper surface. The housing has multiple partitions spaced apart vertically and oriented horizontally along its length. The multiple partitions divide the space inside the housing into multiple flue gas channels. Each partition has a flue gas outlet. The flue gas outlet of one of every two adjacent partitions is located at the left end and the flue gas outlet of the other is located at the right end. Two inlet and outlet channels are respectively located on the left and right sides of the housing. The left and right ends of each flue gas channel are connected to the two inlet and outlet channels through openable and closable flue gas channel valves. Multiple flue gas purification modules are provided in each flue gas channel; Multiple conveying devices are respectively disposed in multiple flue gas channels and are adapted to convey the flue gas purification module to the inlet and outlet channels; Two feeding and discharging devices are respectively located in the two feeding and discharging channels and are adapted to transport the flue gas purification module to the flue gas channel.

2. The moving bed flue gas cleaning device according to claim 1, characterized in that The conveying direction of each of the conveying devices is opposite to the flow direction of the flue gas in the flue gas channel.

3. The mobile bed flue gas purification device according to claim 1, characterized in that, The conveying device includes a conveyor belt and a driving device. The driving device is adapted to drive the conveyor belt to move. The conveyor belt is mesh-like. A flexible sealing layer is provided between the conveyor belt and the partition below. A support mesh is provided inside the flue gas inlet.

4. The moving bed flue gas cleaning device according to claim 1, characterized in that The flue gas purification module is fitted with the flue gas channel with a clearance.

5. The moving bed flue gas cleaning device according to claim 1, characterized in that Each flue gas passage is provided with multiple flue gas purification modules, which are spaced apart in the left-right direction.

6. The moving bed flue gas cleaning device according to claim 1, characterized in that The diameter of the flue gas inlet is greater than or equal to 1.5 times the side length of the flue gas purification module.

7. The moving bed flue gas cleaning device according to claim 1, characterized in that Each of the aforementioned feeding / discharging devices includes: A lifting platform, wherein the lifting platform is vertically and vertically mounted within the material inlet / outlet channel; An infeed / outfeed conveyor belt device is provided on the lifting platform and is adapted to drive the flue gas purification module on the infeed / outfeed conveyor belt device to move to the flue gas channel.

8. The moving bed flue gas cleaning device according to claim 1, characterized in that The inlet and outlet channels are equipped with openable and closable inlet and outlet channel valves at both the upper and lower ends.

9. The moving bed flue gas cleaning device according to claim 1, characterized in that The air outlet is equipped with a pollutant concentration detection device.

10. The moving bed flue gas cleaning device according to claim 1, characterized in that The flue gas purification module has a catalyst and / or adsorbent for purifying flue gas, and the types of catalysts and / or adsorbents of the flue gas purification modules in the multiple flue gas channels are different.

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