Flue gas treatment device and flue gas treatment system

Abstract

The utility model discloses a flue gas treatment device, and belongs to the field of flue gas treatment equipment. According to the device, the mixing and flow equalizing part is arranged in the main path flue, under the condition that flue gas flows in the main path flue and the auxiliary path flue, two strands of flue gas are well mixed and equalized through the plurality of flow equalizing plates, so that a long distance does not need to be reserved for mixing the two strands of flue gas in the second part flue at the rear end; the manufacturing cost of the flue gas treatment device is effectively reduced, and it is guaranteed that the flue gas treatment effect of subsequent flue gas treatment equipment is good. And when the flue gas treatment device is integrated in the flue gas treatment system without the flue gas treatment device, the transformation difficulty of the flue gas treatment system is relatively low, the space occupied by the flue gas treatment system is relatively small, and the adaptability of the flue gas treatment device is improved. Besides, under the condition that the main flue or the auxiliary flue operates independently, the flow equalizing plate can play a good flow equalizing role on the flue gas in the flue, and it is guaranteed that the energy consumption of follow-up flue gas treatment equipment is small.

Description

Technical Field

[0001] The present application relates to the field of flue gas treatment equipment, and in particular to a flue gas treatment device and a flue gas treatment system. Background Art

[0002] In the field of flue gas treatment (for example, desulfurization and denitrification flue gas), certain flow equalization and / or mixing treatment is required before the flue gas is introduced into the external flue gas treatment equipment through the main flue and / or auxiliary flue to reduce the energy consumption of the flue gas treatment equipment.

[0003] However, there is an urgent need for a device that can perform preliminary treatment on flue gas. Utility Model Content

[0004] The embodiments of the present application provide a flue gas treatment device and a flue gas treatment system. This can solve the problem in the prior art of requiring a device capable of performing preliminary treatment of flue gas. The technical solution is as follows:

[0005] In one aspect, a flue gas treatment device is provided, comprising:

[0006] Main flue, auxiliary flue and mixing and equalizing components;

[0007] The main flue extends along a first direction and comprises a first portion and a second portion arranged along the first direction, the first portion having a first smoke inlet at one end facing away from the second portion, and the second portion having a first smoke outlet at one end facing away from the first portion;

[0008] The auxiliary flue is located on one side of the first part, the auxiliary flue extends along a second direction, a second smoke outlet of the auxiliary flue is connected to the first part, and the first direction is perpendicular to the second direction;

[0009] The mixing and equalizing element is located at the connection between the first part and the second part, and the mixing and equalizing element includes: a plurality of support plates and a plurality of equalizing plates, the plurality of support plates are distributed in a parallel array along the third direction, and two ends of each of the support plates are fixedly connected to the edge portion of the second smoke outlet and the inner side wall of the main flue opposite to the second smoke outlet respectively; the plurality of equalizing plates are distributed in a parallel array along the extension direction of the support plates between the plane where the second smoke outlet is located and the inner side wall of the main flue opposite to the second smoke outlet, each of the equalizing plates is fixedly connected to the plurality of support plates, the plane where the equalizing plates are located is parallel to the first direction and perpendicular to the second direction, and a smoke flow channel is enclosed between two adjacent equalizing plates and two adjacent support plates;

[0010] A side of the plurality of smoke flow ducts facing the first smoke inlet is the air inlet surface of the mixing and equalizing element, and a side of the plurality of smoke flow ducts facing the first smoke outlet is the air outlet surface of the mixing and equalizing element; the second smoke outlet and the first smoke inlet are both distributed on the same side of the air inlet surface, and when the mixing and equalizing element is tilted toward the first smoke inlet, the orthographic projection of the air inlet surface on the plane where the second smoke outlet is located covers at least a partial area of ​​the second smoke outlet;

[0011] The first part and at least one section of the auxiliary flue are connected to the second part through the mixing and equalizing element.

[0012] Optionally, a surface of the support plate facing the first smoke inlet is flush with a surface of the flow equalizer facing the first smoke inlet; a surface of the support plate facing the first smoke outlet is flush with a surface of the flow equalizer facing the first smoke outlet.

[0013] Optionally, a portion of the auxiliary flue connected to one end of the plurality of support plates has an arc-shaped guide plate, and the guide plate protrudes toward the second smoke outlet.

[0014] Optionally, the plurality of support plates are distributed at equal intervals, and the plurality of flow equalizing plates are distributed at equal intervals.

[0015] Optionally, the distance between each two adjacent current equalizing plates ranges from 0.05 meters to 1 meter; the distance between each two adjacent support plates ranges from 0.2 meters to 2.5 meters.

[0016] Optionally, when the mixing and equalizing element is tilted toward the first smoke inlet, the angle between the air inlet surface and the plane where the second smoke outlet is located is greater than or equal to 15 degrees and less than 90 degrees; or, the air inlet surface is perpendicular to the second smoke outlet.

[0017] Optionally, the ratio of the width of the flow equalizing plate along the first direction to the inner diameter of the auxiliary flue along the first direction ranges from 0.05 to 0.6.

[0018] Optionally, the main flue has a first switch component distributed in the first part, and the auxiliary flue has a second switch component distributed in the auxiliary flue.

[0019] In another aspect, a flue gas treatment system is provided, comprising:

[0020] A first flue gas treatment device, a second flue gas treatment device, a flue gas inlet channel and the flue gas treatment device, wherein the flue gas treatment device is any of the flue gas treatment devices given above;

[0021] The two ends of the smoke inlet channel are respectively connected to the smoke outlet of the first smoke treatment device and the smoke inlet of the second smoke treatment device;

[0022] The smoke outlet of the second flue gas treatment device is connected to the first smoke inlet of the main flue in the flue gas treatment device, and the first smoke outlet of the main flue in the flue gas treatment device is used to be connected to the chimney;

[0023] The second smoke inlet of the auxiliary smoke duct in the smoke treatment device is connected to the smoke introduction channel.

[0024] Optionally, the smoke inlet channel has a third switch component distributed between the second smoke inlet of the auxiliary smoke duct and the smoke inlet of the second smoke treatment device.

[0025] In another aspect, a flue gas treatment system is provided, comprising: a third flue gas treatment device, a second induced draft fan, and a flue gas treatment device, wherein the flue gas treatment device is any of the flue gas treatment devices given above;

[0026] The smoke inlet of the third flue gas treatment device is connected to the first smoke outlet of the main flue in the flue gas treatment device, and the smoke outlet of the third flue gas treatment device is connected to the smoke inlet of the second induced draft fan;

[0027] The second smoke inlet of the auxiliary flue in the flue gas treatment device is connected to the smoke outlet of the second induced draft fan, and the smoke outlet of the second induced draft fan is also used to be connected to the chimney.

[0028] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0029] A flue gas treatment device may include: a main flue, an auxiliary flue and a mixing and equalizing element. By arranging a mixing and equalizing element between the first part and the second part of the main flue, when flue gas flows in both the main flue and the auxiliary flue, the two flue gases can be well mixed and equalized through the multiple equalizing plates in the mixing and equalizing element, and thus there is no need to reserve a long distance in the second part of the flue at the rear end for mixing the two flue gases, which effectively reduces the manufacturing cost of the flue gas treatment device and ensures that the subsequent flue gas treatment equipment has a better treatment effect on the flue gas. Moreover, when the flue gas treatment device is integrated into a flue gas treatment system that does not have a flue gas treatment device, the modification difficulty of the flue gas treatment system is lower, and the space occupied by the flue gas treatment system is ensured to be smaller, thereby improving the adaptability of the flue gas treatment device. In addition, when the main flue or the auxiliary flue is operated alone, the mixing and equalizing element can play a good role in equalizing the flow of the flue gas in the flue, ensuring that the energy consumption of the subsequent flue gas treatment equipment is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a front view of a flue gas treatment device provided in an embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram of a flue gas treatment device provided in an embodiment of the present application;

[0033] Figure 3 is a front view of another flue gas treatment device provided in an embodiment of the present application;

[0034] Figure 4 yes Figure 3 An axonometric view of a flue gas treatment device is shown;

[0035] Figure 5 This is a partial structural front view of a flue gas treatment device provided in an embodiment of the present application;

[0036] Figure 6 This is a partial structural top view of a flue gas treatment device provided in an embodiment of the present application;

[0037] Figure 7 This is a structural diagram of a flue gas treatment system provided in an embodiment of the present application;

[0038] Figure 8 It is the velocity streamline diagram of the flue gas in the flue gas treatment system using the flue gas treatment device;

[0039] Figure 9 It is the velocity cloud diagram of the flue gas in the flue gas treatment system using the flue gas treatment device;

[0040] Figure 10 This is a structural diagram of a flue gas treatment system provided in an embodiment of the present application;

[0041] Figure 11 It is the velocity streamline diagram of the flue gas in the flue gas treatment system using the flue gas treatment device;

[0042] Figure 12 It is the velocity cloud diagram of the flue gas in the flue gas treatment system using the flue gas treatment device.

[0043] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0047] Please refer to Figure 1 and Figure 2 , Figure 1 This is a front view of a flue gas treatment device provided in an embodiment of the present application. Figure 2 Schematic diagram of a flue gas treatment device according to an embodiment of the present invention. The flue gas treatment device 000 may include: a main flue duct 100, an auxiliary flue duct 200, and a mixing and equalizing element 300.

[0048] The main flue 100 in the flue gas treatment device 000 can extend along the first direction f1, and the main flue 100 can include a first part 101 and a second part 102 arranged along the first direction f1. The end of the first part 101 in the main flue 100 away from the second part 102 can have a first smoke inlet a1, and the end of the second part 102 in the main flue 100 away from the first part 101 can have a first smoke outlet a2.

[0049] The auxiliary flue 200 in the flue gas treatment device 000 can be located on one side of the first portion 101 of the main flue 100. The auxiliary flue 200 can extend along a second direction f2. The second smoke outlet b1 of the auxiliary flue 200 can be connected to the first portion 101 of the main flue 100. The first direction f1 can be perpendicular to the second direction f2. Here, the auxiliary flue 200 also has a second smoke inlet b2 arranged opposite the second smoke outlet b1.

[0050] The mixing and equalizing element 300 in the flue gas treatment device 000 can be located at the connection between the first part 101 and the second part 102 in the main flue 100. The mixing and equalizing element 300 may include: a plurality of support plates 301 and a plurality of equalizing plates 302. The plurality of support plates 301 may be distributed in a parallel array along the third direction f3. The two ends of each support plate 301 may be fixedly connected to the edge portion of the second smoke outlet b1 of the auxiliary flue 200 and the inner side wall of the main flue 100 opposite to the second smoke outlet b1. The plurality of equalizing plates 302 may be distributed in a parallel array along the extension direction of the support plate 301 between the plane where the second smoke outlet b1 is located and the inner side wall of the main flue 100 opposite to the second smoke outlet b1. Each equalizing plate 302 may be fixedly connected to the plurality of support plates 301. The plane where each flow equalizing plate 302 is located is parallel to the first direction f1 and perpendicular to the second direction f2, and a flue gas flow channel A1 can be formed between two adjacent flow equalizing plates 302 and two adjacent support plates 301.

[0051] The side of the multiple flue gas flow channels A1 facing the first smoke inlet a1 of the main flue 100 can serve as the air inlet surface m1 of the mixing and equalizing component 300, and the side of the multiple flue gas flow channels A1 facing the first smoke outlet a2 of the main flue 100 can serve as the air outlet surface m2 of the mixing and equalizing component 300. The second smoke outlet b1 in the auxiliary flue 200 and the first smoke inlet a1 of the main flue 100 can both be located on the same side of the plane containing the air inlet surface m1 of the mixing and equalizing component 300. When the mixing and equalizing component 300 is tilted toward the first smoke inlet a1 of the main flue 100, the orthographic projection of the air inlet surface m1 of the mixing and equalizing component 300 on the plane containing the second smoke outlet b1 of the auxiliary flue 200 can cover at least a portion of the second smoke outlet b1.

[0052] In which, at least one section of the first portion 101 of the main flue 100 and the auxiliary flue 200 can be connected to the second portion 102 of the main flue 100 through the mixing and equalizing element 300 .

[0053] For example, a mixing and equalizing element 300 is provided at the connection between the first portion 101 and the second portion 102 of the main flue 100, and the first smoke inlet a1 of the main flue 100 and the second smoke outlet b1 of the auxiliary flue 200 are both distributed on the same side of the air inlet surface m1 of the mixing and equalizing element 300. In this way, when only the main flue 100 is in operation, the flue gas in the main flue 100 passes through the equalizing effect of the multiple equalizing plates 302 distributed along the first direction f1 in the mixing and equalizing element 300, and is then introduced into the subsequent flue gas treatment equipment through the multiple flue gas flow channels A1 and the first smoke outlet a2. When only the auxiliary flue 200 is in operation, the flue gas in the auxiliary flue 200 passes through the equalizing effect of the multiple equalizing plates 302 distributed along the first direction f1 in the mixing and equalizing element 300, and is then introduced into the subsequent flue gas treatment equipment through the multiple flue gas flow channels A1 and the first smoke outlet a2. When both the main flue 100 and the auxiliary flue 200 are in operation, the flue gas in the main flue 100 and the auxiliary flue 200 are mixed and equalized by the multiple equalizer plates 302 distributed along the first direction f1 in the mixing and equalizing element 300, and then introduced into the subsequent flue gas treatment equipment through the multiple flue gas flow channels A1 and the first smoke outlet a2. Here, equalization means making the flue gas flow more smoothly.

[0054] In the embodiment of the present application, by setting a mixing and equalizing element 300 between the first part 101 and the second part 102 of the main flue 100, when there is flue gas flowing in both the main flue 100 and the auxiliary flue 200, the two flue gases can be well mixed and equalized through the multiple equalizing plates 302 in the mixing and equalizing element 300, and thus there is no need to reserve a long distance in the second part of the flue at the rear end for mixing the two flue gases, which effectively reduces the manufacturing cost of the flue gas treatment device 000 and ensures that the subsequent flue gas treatment equipment has a good treatment effect on the flue gas. Moreover, when the flue gas treatment device 000 is integrated into a flue gas treatment system that does not have a flue gas treatment device, the modification difficulty of the flue gas treatment system is lower, and the space occupied by the flue gas treatment system is ensured to be smaller, thereby improving the adaptability of the flue gas treatment device. In addition, when the main flue 100 or the auxiliary flue 200 is operated alone, the mixing and equalizing element 300 can play a good equalizing role in the flue gas in the flue, ensuring that the energy consumption of the subsequent flue gas treatment equipment is low.

[0055] In summary, the embodiment of the present application provides a flue gas treatment device, which may include: a main flue, an auxiliary flue and a mixing and equalizing element. By arranging a mixing and equalizing element between the first part and the second part of the main flue, when flue gas flows in both the main flue and the auxiliary flue, the two flue gases can be well mixed and equalized through the multiple equalizing plates in the mixing and equalizing element, and thus there is no need to reserve a long distance in the second part of the flue at the rear end for mixing the two flue gases, which effectively reduces the manufacturing cost of the flue gas treatment device and ensures that the subsequent flue gas treatment equipment has a better treatment effect on the flue gas. And when the flue gas treatment device is integrated into a flue gas treatment system that does not have a flue gas treatment device, the modification difficulty of the flue gas treatment system is lower, and the space occupied by the flue gas treatment system is ensured to be smaller, thereby improving the adaptability of the flue gas treatment device. In addition, when the main flue or the auxiliary flue is operated alone, the mixing and equalizing element can play a good equalizing role in the flue gas in the flue, ensuring that the energy consumption of the subsequent flue gas treatment equipment is lower.

[0056] For examples, please refer to Figure 3 and Figure 4 , Figure 3 This is a front view of another flue gas treatment device provided in an embodiment of the present application. Figure 4 yes Figure 3 An axonometric view of a flue gas treatment device is shown. The main flue 100 in the flue gas treatment device 000 can be a square flue. For example, the main flue 100 can include: four first flue plates A2 connected end to end, the two ends of the four first flue plates A2 can respectively enclose a first smoke inlet a1 and a first smoke outlet a2, and one of the four first flue plates A2 can be arranged parallel to the second smoke outlet b1 of the auxiliary flue 200. The auxiliary flue 200 in the flue gas treatment device 000 can be a square flue. For example, the auxiliary flue 200 can include: four second flue plates A3 connected end to end, the two ends of the four second flue plates A3 can respectively enclose a second smoke inlet b2 and a second smoke outlet b1.

[0057] Optional, such as Figure 3As shown, the side of the support plate 301 facing the first smoke inlet a1 in the main flue 100 can be flush with the side of the equalizer plate 302 facing the first smoke inlet a1. The side of the support plate 301 facing the first smoke outlet a2 in the main flue 100 can be flush with the side of the equalizer plate 302 facing the first smoke outlet a2. In this case, by setting the side of the support plate 301 facing the first smoke inlet a1 to be flush with the side of the equalizer plate 302 facing the first smoke inlet a1, and the side of the support plate 301 facing the first smoke outlet a2 to be flush with the side of the equalizer plate 302 facing the first smoke outlet a2, the flow resistance of the mixing and equalizing element 300 to the flue gas can be reduced. For example, the sides of multiple support plates 301 facing the first smoke inlet a1 in the main flue 100 can all be flush, and the sides of multiple support plates 301 facing the first smoke outlet a2 in the main flue 100 can all be flush. The sides of the multiple flow equalizing plates 302 facing the first smoke inlet a1 in the main flue 100 may all be flush, and the sides of the multiple flow equalizing plates 302 facing the first smoke outlet a2 in the main flue 100 may all be flush.

[0058] In the embodiments of this application, Figure 3 and Figure 4 As shown, the portion of the auxiliary flue 200 that is fixedly connected to one end of the multiple support plates 301 can have an arc-shaped guide plate 201, and the guide plate 201 can protrude toward the second smoke outlet b1 in the auxiliary flue 200. In this case, by providing the guide plate 201 in the edge area of ​​the auxiliary flue 200 near the second smoke outlet b1, the guide plate 201 can smoothly guide the smoke in the auxiliary flue 200 to the multiple flow equalizers 302 in the mixing and equalizing element 300, further ensuring the mixing and equalizing effect of the mixing and equalizing element 300 on the smoke in the flue. It should be noted that in other possible implementations, the guide plate 201 can also be an inclined flat plate.

[0059] For example, when the guide plate 201 is an arc-shaped guide plate, the ratio of the radius of the arc-shaped guide plate 201 to the inner diameter D1 of the auxiliary flue 200 along the first direction f1 can be in the range of 0.05 to 0.8.

[0060] Optional, please refer to Figure 5 and Figure 6 , Figure 5 This is a partial structural front view of a flue gas treatment device provided in an embodiment of the present application. Figure 6It is a partial structural top view of a flue gas treatment device provided in an embodiment of the present application. The multiple support plates 301 in the mixing and equalizing flow element 300 can be distributed at equal intervals, and the multiple equalizing flow plates 302 in the mixing and equalizing flow element 300 can be distributed at equal intervals. In this case, by distributing the multiple support plates 301 at equal intervals, and the multiple equalizing flow plates 302 at equal intervals, it can be further ensured that the mixing and equalizing flow of the flue gas by the mixing and equalizing flow element 300 is better. It should be noted that in order to ensure that the mixing and equalizing flow element 300 has less resistance to the flue gas, the number of the multiple support plates 301 can be less than the number of the multiple equalizing flow plates 302.

[0061] For example, the distance d1 between each two adjacent current equalizing plates 302 can range from 0.05 meters to 1 meter. For example, the distance d1 between each two adjacent current equalizing plates 302 can range from 0.05 meters, 0.5 meters, or 1 meter. The distance d2 between each two adjacent support plates 301 can range from 0.2 meters to 2.5 meters. For example, the distance d2 between each two adjacent support plates 301 can range from 0.2 meters, 1 meter, 2 meters, or 2.5 meters.

[0062] In the embodiment of the present application, there are two optional implementations for the location of the mixing and equalizing element 300 in the flue gas treatment device 000. The following is a schematic description using the two optional implementations as examples:

[0063] The first optional implementation method is Figure 3 As shown, the mixing and equalizing element 300 can be tilted toward the first smoke inlet a1 in the main flue 100. The angle α between the air inlet surface m1 of the mixing and equalizing element 300 and the plane containing the second smoke outlet b1 in the auxiliary flue 200 can be greater than or equal to 15 degrees and less than 90 degrees. For example, the air inlet surface m1 and the air outlet surface m2 of the mixing and equalizing element 300 can be arranged parallel to each other along the first direction f1. For example, the angle between the air inlet surface m1 of the mixing and equalizing element 300 and the plane containing the second smoke outlet b1 in the auxiliary flue 200 can be 45 degrees.

[0064] In a second optional implementation, the air inlet surface m1 in the mixing and equalizing flow element 300 and the plane where the second smoke outlet b1 in the auxiliary flue 200 is located are perpendicular to each other.

[0065] Optionally, the ratio of the width D2 of the flow equalizer plates 302 in the mixing and equalizing member 300 along the first direction f1 to the inner diameter D1 of the auxiliary flue 200 along the first direction f1 can be in the range of 0.05 to 0.6. Here, the widths of the multiple flow equalizer plates 302 can be equal, and the widths of the multiple support plates 301 can be equal.

[0066] In the embodiments of this application, Figure 3As shown, the main flue 100 may have a first switch component 103 distributed in the first part, and the auxiliary flue 200 may have a second switch component 202 distributed in the auxiliary flue 200. It should be noted that the first switch component 103 and the second switch component 202 may be stop valves or the like.

[0067] For example, in a flue gas treatment system integrated with the flue gas treatment device 000, when only the main flue 100 is in operation, the first switch component 103 in the main flue 100 is in an open or closed state, and the second switch component 202 in the auxiliary flue 200 is in a closed state. The main flue gas is guided to the mixing and equalizing element 300 through the main flue 100. After the main flue gas passes through the equalizing effect of the multiple equalizing plates 302 in the mixing and equalizing element 300, it is introduced into the subsequent flue gas treatment equipment. When only the auxiliary flue 200 is in operation, the first switch component 103 in the main flue 100 is in a closed state, and the second switch component 202 in the auxiliary flue 200 is in an open or closed state. The auxiliary flue gas is guided to the mixing and equalizing element 300 through the auxiliary flue 200. After the main flue gas passes through the equalizing effect of the multiple equalizing plates 302 in the mixing and equalizing element 300, it is introduced into the subsequent flue gas treatment equipment. When the main flue 100 is turned on and in operation, and the auxiliary flue 200 is turned on and in operation (i.e., circulating flue gas needs to be supplemented to the main flue), the first switch component 103 in the main flue 100 and the second switch component 200 in the auxiliary flue 200 can both be in an open or closed state, and the main flue gas and the auxiliary flue gas are mixed and equalized by the mixing and equalizing component 300, and then introduced into the subsequent flue gas treatment equipment 000.

[0068] In summary, the embodiment of the present application provides a flue gas treatment device, which may include: a main flue, an auxiliary flue and a mixing and equalizing element. By arranging a mixing and equalizing element between the first part and the second part of the main flue, when flue gas flows in both the main flue and the auxiliary flue, the two flue gases can be well mixed and equalized through the multiple equalizing plates in the mixing and equalizing element, and thus there is no need to reserve a long distance in the second part of the flue at the rear end for mixing the two flue gases, which effectively reduces the manufacturing cost of the flue gas treatment device and ensures that the subsequent flue gas treatment equipment has a better treatment effect on the flue gas. And when the flue gas treatment device is integrated into a flue gas treatment system that does not have a flue gas treatment device, the modification difficulty of the flue gas treatment system is lower, and the space occupied by the flue gas treatment system is ensured to be smaller, thereby improving the adaptability of the flue gas treatment device. In addition, when the main flue or the auxiliary flue is operated alone, the mixing and equalizing element can play a good equalizing role in the flue gas in the flue, ensuring that the energy consumption of the subsequent flue gas treatment equipment is lower.

[0069] This application also provides a flue gas treatment system. Figure 7 , Figure 7This is a schematic diagram of the structure of a flue gas treatment system provided in an embodiment of the present application. The flue gas treatment system 00 may include: a first flue gas treatment device 001, a second flue gas treatment device 002, a flue gas inlet channel 003, and a flue gas treatment device 000. The flue gas treatment device 000 may be any of the flue gas treatment devices described above.

[0070] The two ends of the flue gas introduction channel 003 in the flue gas treatment system 00 can be connected to the smoke outlet of the first flue gas treatment device 001 and the smoke inlet of the second flue gas treatment device 002 respectively.

[0071] The smoke outlet of the second flue gas treatment device 002 in the flue gas treatment system 00 can be connected to the first smoke inlet a1 of the main flue 100 in the flue gas treatment device 000, and the first smoke outlet a2 of the main flue 100 in the flue gas treatment device 000 can be used to connect to the chimney B1.

[0072] The second smoke inlet b2 of the auxiliary flue 200 in the smoke treatment device 000 can be connected to the smoke introduction channel 003.

[0073] For example, when the auxiliary flue 200 in the flue gas treatment device 000 is not conductive and the main flue 100 is conductive, the flue gas introduced into the flue gas inlet channel 003 from the smoke outlet of the first flue gas treatment device 001 is introduced into the second flue gas treatment device 002. After being processed by the second flue gas treatment device 002, the flue gas is introduced into the main flue 100 from the smoke outlet of the second flue gas treatment device 002. The flue gas introduced into the main flue 100 is evenly distributed through the multiple flow equalizing plates 302 in the mixing and equalizing element 300 and then introduced into the chimney B1 from the first smoke outlet a2 of the main flue 100. In addition, when the flue gas introduced into the flue gas introduction channel 003 from the smoke outlet of the first flue gas treatment device 001 does not need to be further treated by the second flue gas treatment device 002, the flue between the flue gas introduction channel 003 and the second flue gas treatment device 002 is closed, and the first switch component 103 in the main flue 100 is closed, while the second switch component 202 in the auxiliary flue 200 is opened and closed. In this way, the flue gas introduced into the flue gas introduction channel 003 from the smoke outlet of the first flue gas treatment device 001 can be introduced into the mixing and equalizing element 300 through the auxiliary flue 200. After being equalized by the multiple equalizing plates 302 in the mixing and equalizing element 300, the flue gas is introduced into the chimney B1 through the first smoke outlet a2 of the main flue 100.

[0074] In the present application, the flue gas treatment system 00 may further include: a first induced draft fan 004 located between the first smoke outlet a2 of the main flue 100 and the chimney B1, and the first induced draft fan 004 may be used to provide negative pressure to introduce the flue gas into the chimney B1 for discharge.

[0075] In this embodiment of the present application, the flue gas inlet channel 003 may include a third switch component 003a located between the second smoke inlet b2 of the auxiliary flue 200 and the smoke inlet of the second flue gas treatment device 002. Thus, when the second flue gas treatment device is being repaired or when the flue gas does not need to be treated by the second flue gas treatment device, the third switch component 003a and the first switch component 103 may be closed, and the second switch component 202 may be opened.

[0076] When the above-mentioned flue gas treatment system is a desulfurization and denitrification flue gas treatment system, the first flue gas treatment equipment may include desulfurization equipment and dust removal equipment, and the second flue gas treatment equipment may be denitrification equipment.

[0077] The following is a simulation analysis of the desulfurization and denitrification flue gas treatment system equipped with a flue gas treatment device. Please refer to Figure 8 and Figure 9 , Figure 8 It is the velocity streamline diagram of the flue gas in the flue gas treatment system using the flue gas treatment device. Figure 9 It is the velocity cloud diagram of the flue gas in the flue gas treatment system using the flue gas treatment device. Figure 8 It can be seen that the velocity streamline of the flue gas treated by the flue gas treatment device is smooth. Figure 9 As can be seen from the figure, the flue gas velocity at the inlet section of the first induced draft fan 004 is well uniform, and the installation of the mixing and equalizing element does not significantly increase the resistance to flue gas flow. This shows that the installation of the mixing and equalizing element in the flue gas treatment device has a good effect on the uniform flow of the flue gas.

[0078] This application also provides a flue gas treatment system. Figure 10 , Figure 10 Schematic diagram of a flue gas treatment system according to an embodiment of the present application. The flue gas treatment system 00 may include: a third flue gas treatment device 005, a second induced draft fan 006 and a flue gas treatment device 000.

[0079] The smoke inlet of the third smoke treatment device 005 in the smoke treatment system 00 can be connected to the first smoke outlet a2 of the main flue 100 in the smoke treatment device 000, and the smoke outlet of the third smoke treatment device 005 can be connected to the smoke inlet of the second induced draft fan 006.

[0080] The second smoke inlet b2 of the auxiliary flue 200 in the flue gas treatment device can be connected to the smoke outlet of the second induced draft fan 006, and the smoke outlet of the second induced draft fan 006 can also be connected to the chimney B2. Here, the outlet of the second induced draft fan 006 and the auxiliary flue 200 are combined to form a circulating flue of the main flue 100.

[0081] For example, in the flue gas treatment system, when only the main flue 100 is operating, the second switch component 202 in the auxiliary flue 200 is closed, and the main flue gas is introduced into the mixing and equalizing element 300 through the main flue 100. After the flue gas passes through the equalizing effect of the equalizing plate 302 in the mixing and equalizing element 300, it is introduced into the third flue gas treatment equipment 005; after being processed by the third flue gas treatment equipment 005, the flue gas is introduced into the second induced draft fan 006.

[0082] When the circulating flue gas needs to be supplemented, the second switch component 202 in the auxiliary flue 200 is opened, and the circulating flue gas from the outlet of the second induced draft fan 006 is led to the mixing and equalizing component 300 through the auxiliary flue 200. The main flue gas and the circulating flue gas are mixed and equalized through multiple equalizing plates 302 and then introduced into the third flue gas treatment equipment 005.

[0083] When the flue gas treatment system is a desulfurization flue gas treatment system, the third flue gas treatment equipment may include desulfurization equipment and dust removal equipment. The desulfurization and dust removal system utilizes a circulating fluidized bed process. Flue gas is first introduced into the desulfurization and dust removal system through the desulfurization inlet flue (i.e., the main flue), and then discharged to the chimney via a secondary induced draft fan. When the main engine operating conditions fluctuate and the flue gas volume decreases, circulating flue gas must be replenished to ensure bed stability. This can be achieved through the auxiliary flue.

[0084] The following is a simulation analysis of the desulfurization flue gas treatment system equipped with a flue gas treatment device. Please refer to Figure 11 and Figure 12 , Figure 11 It is the velocity streamline diagram of the flue gas in the flue gas treatment system using the flue gas treatment device. Figure 12 It is the velocity cloud diagram of the flue gas in the flue gas treatment system using the flue gas treatment device. Figure 11 It can be seen that the velocity streamline of the flue gas treated by the flue gas treatment device is smooth. Figure 12 As can be seen from the figure, the flue gas velocity uniformity at the inlet section of the desulfurization equipment is good, and the installation of the mixing and equalizing device does not increase the resistance of the flue gas flow. Therefore, it can be seen that the installation of the mixing and equalizing device in the flue gas treatment device has a good effect on the uniform flow of the flue gas.

[0085] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0086] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A flue gas treatment device, characterized in that: include: Main flue, auxiliary flue and mixing and equalizing components; The main flue extends along a first direction and comprises a first portion and a second portion arranged along the first direction, the first portion having a first smoke inlet at one end facing away from the second portion, and the second portion having a first smoke outlet at one end facing away from the first portion; The auxiliary flue is located on one side of the first part, the auxiliary flue extends along a second direction, a second smoke outlet of the auxiliary flue is connected to the first part, and the first direction is perpendicular to the second direction; The mixing and equalizing element is located at the connection between the first part and the second part, and the mixing and equalizing element includes: a plurality of support plates and a plurality of equalizing plates, the plurality of support plates are distributed in a parallel array along the third direction, and two ends of each of the support plates are fixedly connected to the edge portion of the second smoke outlet and the inner side wall of the main flue opposite to the second smoke outlet respectively; the plurality of equalizing plates are distributed in a parallel array along the extension direction of the support plates between the plane where the second smoke outlet is located and the inner side wall of the main flue opposite to the second smoke outlet, each of the equalizing plates is fixedly connected to the plurality of support plates, the plane where the equalizing plates are located is parallel to the first direction and perpendicular to the second direction, and a smoke flow channel is enclosed between two adjacent equalizing plates and two adjacent support plates; A side of the plurality of smoke flow ducts facing the first smoke inlet is the air inlet surface of the mixing and equalizing element, and a side of the plurality of smoke flow ducts facing the first smoke outlet is the air outlet surface of the mixing and equalizing element; the second smoke outlet and the first smoke inlet are both distributed on the same side of the air inlet surface, and when the mixing and equalizing element is tilted toward the first smoke inlet, the orthographic projection of the air inlet surface on the plane where the second smoke outlet is located covers at least a partial area of ​​the second smoke outlet; Wherein, at least one section of the first part and the auxiliary flue is connected to the second part through the mixing and equalizing element.

2. The flue gas treatment device according to claim 1, characterized in that: The side of the support plate facing the first smoke inlet is flush with the side of the flow equalizer facing the first smoke inlet; the side of the support plate facing the first smoke outlet is flush with the side of the flow equalizer facing the first smoke outlet.

3. The flue gas treatment device according to claim 1, characterized in that: A portion of the auxiliary flue connected to one end of the plurality of support plates has an arc-shaped guide plate, and the guide plate protrudes toward the second smoke outlet.

4. The flue gas treatment device according to claim 1, characterized in that: The plurality of support plates are distributed at equal intervals, and the plurality of flow equalizing plates are distributed at equal intervals.

5. The flue gas treatment device according to claim 4, characterized in that: The distance between each two adjacent current equalizing plates is: The distance between each two adjacent support plates ranges from 0.2 meters to 2.5 meters.

6. The flue gas treatment device according to any one of claims 1 to 5, characterized in that: When the mixing and equalizing element is tilted toward the first smoke inlet, the angle between the air inlet surface and the plane where the second smoke outlet is located is greater than or equal to 15 degrees and less than 90 degrees; or, the air inlet surface and the second smoke outlet are perpendicular.

7. The flue gas treatment device according to any one of claims 1 to 5, characterized in that: The main flue has a first switch component distributed in the first part, and the auxiliary flue has a second switch component distributed in the auxiliary flue.

8. A flue gas treatment system, characterized in that: include: A first flue gas treatment device, a second flue gas treatment device, a flue gas inlet channel, and a flue gas treatment device according to any one of claims 1 to 7; The two ends of the smoke inlet channel are respectively connected to the smoke outlet of the first smoke treatment device and the smoke inlet of the second smoke treatment device; The smoke outlet of the second flue gas treatment device is connected to the first smoke inlet of the main flue in the flue gas treatment device, and the first smoke outlet of the main flue in the flue gas treatment device is used to be connected to the chimney; The second smoke inlet of the auxiliary smoke duct in the smoke treatment device is connected to the smoke introduction channel.

9. The flue gas treatment system according to claim 8, characterized in that: The smoke inlet channel has a third switch component distributed between the second smoke inlet of the auxiliary smoke duct and the smoke inlet of the second smoke treatment device.

10. A flue gas treatment system, characterized in that: include: A third flue gas treatment device, a second induced draft fan, and a flue gas treatment device according to any one of claims 1 to 7; The smoke inlet of the third flue gas treatment device is connected to the first smoke outlet of the main flue in the flue gas treatment device, and the smoke outlet of the third flue gas treatment device is connected to the smoke inlet of the second induced draft fan; The second smoke inlet of the auxiliary flue in the flue gas treatment device is connected to the smoke outlet of the second induced draft fan, and the smoke outlet of the second induced draft fan is also used to be connected to the chimney.

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