Integrated coupling device and flue gas system for denitrification and carbon monoxide removal
By setting up an independent channel in the flue gas flow pipe and isolating the catalyst, the problems of low carbon monoxide emission reduction efficiency and easy catalyst poisoning in the steel sintering industry were solved, achieving efficient removal of carbon monoxide and nitrogen oxides, extending catalyst life and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN LONGKING DSDN ENGINEERING CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, there is a lack of effective means to reduce carbon monoxide emissions in the steel sintering industry. Catalysts are difficult to install, have low efficiency, and are prone to poisoning, resulting in short equipment life and the inability to achieve efficient removal of carbon monoxide and nitrogen oxides.
Design an integrated coupling device for denitrification and carbon monoxide removal. By setting independent channels in the flue gas flow pipe, carbon monoxide removal catalysts and denitrification catalysts are installed separately and connected by support beams to achieve isolated installation of the catalysts. The flue gas flow is optimized by heating furnace and injection grid to reduce resistance.
It improves carbon monoxide removal efficiency, extends catalyst lifespan, reduces engineering costs, achieves compact equipment configuration and convenient maintenance, and solves site layout and cost issues.
Smart Images
Figure CN224285476U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of flue gas purification equipment technology, and in particular to an integrated coupling device and flue gas system for denitrification and carbon monoxide removal. Background Technology
[0002] Carbon monoxide (CO) emission reduction in the steel sintering industry has always been a major concern, but effective technological means for CO reduction in sintering flue gas are still lacking. Limited by the temperature characteristics of sintering flue gas and the concentration of CO emissions, catalytic oxidation processes are primarily used for CO reduction. Currently, in various flue gas treatment processes, for example, CO catalysts are installed in the inlet flue of an SCR (Selective Catalytic Reduction) system. However, due to the narrowness of the flue, sufficient catalyst cannot be installed, resulting in low CO removal efficiency. Furthermore, the high flue gas velocity in the flue leads to significant catalyst resistance. For instance, some CO catalysts are installed in SCR reactors. However, due to the inherent limitations of SCR reactors, only one layer of CO catalyst can typically be installed. More significantly, the presence of ammonia in SCR reactors reduces CO removal efficiency and can even lead to CO poisoning and deactivation, resulting in a short catalyst lifespan.
[0003] Therefore, there is an urgent need for an integrated coupling device for denitrification and carbon monoxide removal that can be adapted to different sites, save costs, and ensure carbon monoxide removal efficiency. Utility Model Content
[0004] This application provides an integrated coupling device for denitrification and carbon monoxide removal. It addresses the existing technology's urgent need for an integrated coupling device that can be adapted for different sites, saves costs, and ensures efficient carbon monoxide removal. The technical solution is as follows:
[0005] On one hand, an integrated coupling device for denitrification and carbon monoxide removal is provided, the integrated coupling device for denitrification and carbon monoxide removal comprising:
[0006] Flue gas flow pipe, catalyst assembly and support;
[0007] The flue gas flow pipe and the support are distributed along a first direction;
[0008] The flue gas flow pipe has a first channel and a second channel arranged along a second direction and interconnected with each other, at least a portion of the first channel extends along the first direction, at least a portion of the second channel extends along the first direction, and the second direction is perpendicular to the first direction;
[0009] The catalyst assembly includes a support beam, a carbon monoxide removal catalyst, and a denitrification catalyst. The support beam is fastened to the flue gas flow pipe and the bracket, respectively. The carbon monoxide removal catalyst is installed on the support beam and located in the inlet area of the first channel. The denitrification catalyst is installed on the support beam and located in the outlet area of the second channel. The flue gas flows through the carbon monoxide removal catalyst in the first channel to the denitrification catalyst in the second channel.
[0010] Optionally, the flue gas flow pipe includes: an outer shell and a partition, the partition being fixedly connected to the cavity of the outer shell to divide the cavity of the outer shell into the first channel and the second channel; the carbon monoxide removal catalyst and the denitrification catalyst are distributed on both sides of the partition;
[0011] The partition has an opening between its outer side and the inner wall of the outer shell cavity, which connects the first channel and the second channel.
[0012] Optionally, the flue gas flow pipe includes: a first outer shell and a second outer shell distributed along the second direction, the first outer shell having the first channel, the second outer shell having the second channel, and the first outer shell and the second outer shell being an integral structure.
[0013] Optionally, the flue gas flow pipe includes: a first outer shell, a third outer shell, a second outer shell, and a first partition plate. The first outer shell and the third outer shell are arranged and connected along the first direction, and the second outer shell is arranged with the first outer shell and the third outer shell along the second direction. A portion of the first partition plate is fixed between the second outer shell and the first outer shell and forms part of a first channel with the first outer shell. Another portion of the first partition plate is fixed between the second outer shell and the third outer shell. A first opening communicating with the third outer shell and the second outer shell is provided between one outer side of the first partition plate and the inner wall of the cavity of the second outer shell. The second outer shell and the first partition plate form a second channel. The third outer shell has another portion of the first channel, and the carbon monoxide removal catalyst is distributed inside the first outer shell.
[0014] The third outer shell has a first pipe segment connected to the first outer shell, and a second pipe segment connected to the first pipe segment and the second outer shell. The inner diameter of the first pipe segment gradually decreases in the direction away from the first outer shell and closer to the second pipe segment.
[0015] Optionally, the support beam includes two sets of frame beams that are separately arranged. One set of frame beams is connected to the first outer shell and the bracket respectively and is used to install the carbon monoxide removal catalyst; the other set of frame beams is connected to the second outer shell and the bracket respectively and is used to install the denitrification catalyst.
[0016] Optionally, the number of carbon monoxide removal catalysts is multiple sets, and the multiple sets of carbon monoxide removal catalysts are arranged in an array along the first direction; and / or, the number of denitrification catalysts is multiple sets, and the multiple sets of denitrification catalysts are arranged in an array along the first direction.
[0017] Optionally, the integrated coupling device for denitrification and carbon monoxide removal further includes a heating furnace and a spray grille, both of which are installed in the first channel, with the spray grille located on the side of the heating furnace away from the carbon monoxide removal catalyst and close to the denitrification catalyst.
[0018] Optionally, the integrated coupling device for denitrification and carbon monoxide removal further includes a flow equalization component installed in the second channel and located between the injection grid and the denitrification catalyst.
[0019] Optionally, the integrated coupling device for denitrification and carbon monoxide removal further includes: a GGH heat exchanger fixed on the support, the GGH heat exchanger having a first flue gas inlet and a first flue gas outlet connected to each other, and a second flue gas inlet and a second flue gas outlet connected to each other.
[0020] The first smoke outlet is connected to the inlet of the first channel, and the second smoke inlet is connected to the outlet of the second channel.
[0021] On the other hand, a flue gas system is provided, the flue gas system comprising: a desulfurization device and an integrated coupling device for denitrification and decarbon monoxide removal, wherein the desulfurization device is connected to the inlet of a first channel in the integrated coupling device for denitrification and decarbon monoxide removal, and the integrated coupling device for denitrification and decarbon monoxide removal is any of the integrated coupling devices for denitrification and decarbon monoxide removal given above.
[0022] The beneficial effects of the technical solutions provided in this application include at least the following:
[0023] By incorporating an integrated flue gas flow pipe into the combined denitrification and carbon monoxide removal device, the carbon monoxide removal catalyst and the denitrification catalyst are respectively isolated and placed in two channels within the flue gas flow pipe. This ensures smooth flue gas flow with low resistance, effectively preventing carbon monoxide catalyst deactivation due to poisoning. This not only guarantees carbon monoxide removal efficiency but also extends service life. Furthermore, the integrated flue gas flow pipe is mounted on the support beam simultaneously with the catalyst installation, achieving a compact configuration of the equipment space. This effectively solves the problem of tight site layout in engineering projects. At the same time, the integrated flue gas flow pipe structure significantly reduces structural and civil engineering costs, enabling more convenient system operation, maintenance, and repair. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of an integrated coupling device for denitrification and carbon monoxide removal provided in an embodiment of this application;
[0026] Figure 2 This is a schematic diagram of a support beam provided in an embodiment of this application;
[0027] Figure 3 This is a schematic diagram of another integrated coupling device for denitrification and carbon monoxide removal provided in an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the structure of another integrated coupling device for denitrification and carbon monoxide removal provided in the embodiments of this application;
[0029] Figure 5 This is a schematic diagram of the structure of another integrated coupling device for denitrification and carbon monoxide removal provided in the embodiments of this application;
[0030] Figure 6 This is a schematic diagram of the arrangement of support beams in a first channel provided in an embodiment of this application;
[0031] Figure 7 This is a structural block diagram of a flue gas system provided in an embodiment of this application.
[0032] The components include a flue gas flow pipe 100, a catalyst assembly 200, a support 300, a first channel 101, a second channel 102, a support beam 201, a carbon monoxide removal catalyst 202, a denitrification catalyst 203, an outer shell 110, a partition 120, an opening 103, a first outer shell 130, a second outer shell 140, a frame beam 201a, a heating furnace 400, a spray grille 500, and a GGH heat exchanger 700.
[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0036] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0037] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an integrated coupling device for denitrification and carbon monoxide removal provided in an embodiment of this application. The integrated coupling device for denitrification and carbon monoxide removal includes: a flue gas flow pipe 100, a catalyst assembly 200, and a support 300.
[0038] The flue gas flow pipe 100 and support 300 in the integrated coupling device for denitrification and decarbonization can be distributed along the first direction f1.
[0039] The flue gas flow pipe 100 in the integrated coupling device for denitrification and decarbonization can have a first channel 101 and a second channel 102 arranged along a second direction f2 and interconnected with each other. At least a portion of the first channel 101 can extend along the first direction f1, and at least a portion of the second channel 102 can extend along the first direction f1. The second direction f2 can be set perpendicular to the first direction f1.
[0040] The catalyst assembly 200 in the integrated denitrification and carbon monoxide removal coupling device may include: a support beam 201, a carbon monoxide removal catalyst 202, and a denitrification catalyst 203. The support beam 201 can be securely connected to the flue gas flow pipe 100 and the support 300, respectively. The carbon monoxide removal catalyst 202 can be installed on the support beam 201 and located in the inlet region of the first channel 101, and the denitrification catalyst 203 can be installed on the support beam 201 and located in the outlet region of the second channel 102. Flue gas can flow through the carbon monoxide removal catalyst 202 in the first channel of the flue gas flow pipe 100 to the denitrification catalyst 203 in the second channel 102. Here, both the carbon monoxide removal catalyst and the denitrification catalyst are structures formed after the catalyst materials are installed in the housing.
[0041] Please refer to Figure 2 , Figure 2 This is a schematic diagram of a support beam provided in an embodiment of this application. The support beam 201 can be a frame structure formed by the cross connection of multiple support plates 2011.
[0042] In this embodiment, by setting an integrated flue gas flow pipe in the integrated coupling device for denitrification and carbon monoxide removal, the carbon monoxide removal catalyst 202 and the denitrification catalyst 203 are respectively isolated and placed in two channels of the flue gas flow pipe 100. This ensures smooth flue gas flow and low resistance, effectively preventing the carbon monoxide removal catalyst from deactivating due to poisoning. This not only guarantees the carbon monoxide removal efficiency but also extends its service life. Furthermore, the integrated flue gas flow pipe 100 is installed on the support beam 201 simultaneously with the catalyst installation, achieving a compact configuration of the equipment space. This effectively solves the problem of compact site layout in engineering projects. At the same time, the integrated structure of the flue gas flow pipe significantly reduces structural and civil engineering costs, enabling more convenient system operation, maintenance, and repair.
[0043] In summary, this application provides an integrated coupling device for denitrification and carbon monoxide removal, which may include a flue gas flow pipe, a catalyst assembly, and a support frame. By incorporating an integrated flue gas flow pipe within the device, the carbon monoxide removal catalyst and the denitrification catalyst are respectively isolated and placed in two channels within the pipe. This ensures smooth flue gas flow with low resistance, effectively preventing the carbon monoxide catalyst from deactivating due to poisoning. This not only guarantees carbon monoxide removal efficiency but also extends the device's service life. Furthermore, the integrated flue gas flow pipe is mounted on the support frame simultaneously with the catalyst installation, achieving a compact configuration of the equipment space. This effectively solves the problem of arranging equipment in compact sites. Simultaneously, the integrated flue gas flow pipe structure significantly reduces structural and civil engineering costs, enabling more convenient system operation, maintenance, and repair.
[0044] Optionally, the integrated flue gas flow pipe in this application can be implemented in various ways. The following embodiments of this application illustrate two possible implementation methods as examples:
[0045] For the first optional implementation method, please refer to... Figure 3 , Figure 3 This is a schematic diagram of another integrated coupling device for denitrification and carbon monoxide removal provided in this application embodiment. The flue gas flow pipe 100 may include an outer shell 110 and a partition 120. The partition 120 can be fixedly connected to the cavity of the outer shell 110, dividing the cavity of the outer shell 110 into a first channel 101 and a second channel 102. Carbon monoxide removal catalyst 202 and denitrification catalyst 203 can be distributed on both sides of the partition 120. An opening 103 connecting the first channel 101 and the second channel 102 can be provided between one outer side of the partition 120 and the inner wall of the cavity of the outer shell 110. In this case, by providing an outer shell 110 with an opening and fixing the partition 120 to the cavity of the outer shell 110, the cavity of the outer shell 110 can be divided into two channels, and the opening of the outer shell 110 can be divided into the inlet of the first channel 101 and the outlet of the second channel 102. Thus, the flue gas flow pipe 100 has a simple structure and a high degree of integration, achieving a compact configuration of equipment space and effectively solving the problem of compact site layout in engineering projects. It should be noted that the partition can be fixedly connected to the outer shell by welding or other methods, or the partition and the outer shell can be an integral structure; this embodiment does not specifically limit this. It should also be noted that the support beam 201 can be an integral frame beam used to support the installation of the carbon monoxide removal catalyst 202 and the denitrification catalyst 203.
[0046] For the second optional implementation method, please refer to... Figure 4 , Figure 4This is a schematic diagram of another integrated coupling device for denitrification and carbon monoxide removal provided in this application embodiment. The flue gas flow pipe 100 may include: a first outer shell 130 and a second outer shell 140 distributed along a second direction. The first outer shell 130 has a first channel 101, and the second outer shell 140 may have a second channel 102. The first outer shell 130 and the second outer shell 140 are an integral structure. In this case, by setting the flue gas flow pipe 100 as an integrally formed first outer shell 130 and second outer shell 140, the structure of the flue gas flow pipe is kept simple and highly integrated, achieving a compact configuration of the equipment space and effectively solving the problem of compact site layout in engineering projects. It should be noted that the first outer shell 130 and the second outer shell 140 may each be tubular structures, and the first outer shell 130 and the second outer shell 140 may also be fixedly connected by welding or other methods. For example, the flue gas flow pipe 100 may also include: a transition connecting pipe 150 located between the first outer shell 130 and the second outer shell 140, and the flue gas flow pipe may be U-shaped.
[0047] In the embodiments of this application, such as Figure 4 As shown, the support beam 201 in the catalyst assembly 200 may include two separately arranged sets of frame beams 201a. One set of frame beams 201a can be connected to the first outer shell 130 and the bracket 300 respectively and is used to install the carbon monoxide removal catalyst 202; the other set of frame beams 201a can be connected to the second outer shell 140 and the bracket 300 respectively and is used to install the denitrification catalyst 203. In this way, by setting two sets of frame beams, the installation of the carbon monoxide removal catalyst 202 and the denitrification catalyst 203 can be conveniently realized, improving the assembly convenience of the integrated coupling device for denitrification and carbon monoxide removal.
[0048] For the second optional implementation method, please refer to... Figure 5 , Figure 5This is a schematic diagram of another integrated coupling device for denitrification and carbon monoxide removal provided in this application embodiment. The flue gas flow pipe 100 includes: a first outer shell 160, a third outer shell 170, a second outer shell 180, and a first partition 190. The first outer shell 160 and the third outer shell 170 are arranged and connected along a first direction f1, and the second outer shell 180 is arranged along a second direction f2 with the first outer shell 160 and the third outer shell 170. A portion of the first partition 190 is fixed between the second outer shell 180 and the first outer shell 160, forming a portion of a first channel 101 with the first outer shell 160. Another portion of the first partition 190 is fixed between the second outer shell 180 and the third outer shell 170, and a first opening 104 communicating between the third outer shell 170 and the second outer shell 180 is provided between one outer side of the first partition 190 and the inner wall of the cavity of the second outer shell 180. The second outer shell 180 and the first partition 190 form a second channel 102. The third outer shell 170 has another portion of the first channel 101, and the carbon monoxide removal catalyst 202 can be distributed within the first outer shell 160.
[0049] The third outer casing 170 has a first pipe section 171 connected to the first outer casing 160, and a second pipe section 172 connecting the first pipe section 171 and the second outer casing 180. The inner diameter of the first pipe section 171 gradually decreases in the direction away from the first outer casing 160 and closer to the second pipe section 172. Thus, by connecting the first outer casing 160 and the third outer casing 170 to form a first channel 101, the smoothness of flue gas flow within the first channel 101 is further improved. Here, the second pipe section 172 can be composed of a vertical pipe section, an arc-shaped pipe section, and a horizontal pipe section. The two ends of the arc-shaped pipe section are fixedly connected to one end of the vertical pipe section and one end of the horizontal pipe section, respectively. The other end of the vertical pipe section is fixedly connected to the first pipe section 171, and the other end of the horizontal pipe section is fixedly connected to the second outer casing 180. For example, the inner diameters of the vertical pipe section, the arc-shaped pipe section, and the horizontal pipe section in the second pipe section 172 can be the same.
[0050] It should be noted that the first outer shell 160 and the second outer shell 180 reuse a part of the first partition 190. The first outer shell 160, the third outer shell 170, the second outer shell 180 and the first partition 190 can be fixedly connected by welding, or the first outer shell 160, the third outer shell 170, the second outer shell 180 and the first partition 190 can be an integral structure.
[0051] Optionally, the number of carbon monoxide removal catalysts 202 in the catalyst assembly 200 can be multiple sets, and the multiple sets of carbon monoxide removal catalysts 202 can be arranged in an array along the first direction f1, and / or, the number of denitrification catalysts 203 can be multiple sets, and the multiple sets of denitrification catalysts 203 can be arranged in an array along the first direction f1.
[0052] For example, the number of carbon monoxide removal catalysts 202 in the catalyst assembly 200 can be multiple sets, and the multiple sets of carbon monoxide removal catalysts 202 can be equidistantly distributed along the first direction f1. Each set of carbon monoxide removal catalysts 202 contains multiple carbon monoxide removal catalysts 202. Thus, the integrated flue gas flow pipe 100 designed for the denitrification catalyst 203 and the carbon monoxide removal catalysts 202 allows for the placement of multiple layers of carbon monoxide removal catalysts 202 within the first channel 101 of the flue gas flow pipe 100, ensuring a good removal effect of carbon monoxide from the flue gas. For example, there can be two sets of carbon monoxide removal catalysts 202.
[0053] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the arrangement of support beams in a first channel according to an embodiment of this application. The catalyst assembly 200 can contain multiple sets of denitrification catalysts 203, which can be equidistantly distributed along a first direction f1. Each set of denitrification catalysts 203 contains multiple denitrification catalysts 203. Thus, by setting multiple layers of denitrification catalysts 203 in the second channel 102 of the flue gas flow pipe 100, a good removal effect of nitrogen oxides in the flue gas is ensured. It should be noted that when there are multiple sets of denitrification catalysts 203, a set of frame beams 201a corresponding to each denitrification catalyst 203 can have multiple frame beams 201a, and these multiple frame beams 201a are connected one-to-one with the multiple sets of denitrification catalysts 203.
[0054] In the embodiments of this application, such as Figure 3 , Figure 4 and Figure 5As shown, the integrated coupling device for denitrification and carbon monoxide removal can further include a heater 400 and a spray grille 500. Both the heater 400 and the spray grille 500 can be installed within the first channel 101 of the flue gas flow pipe 100, and the spray grille 500 can be located on the side of the heater 400 away from the carbon monoxide removal catalyst 202 and close to the denitrification catalyst 203. In this way, by placing the carbon monoxide removal catalyst 202 before the heater 400, sulfur poisoning and deactivation of the carbon monoxide removal catalyst 202 due to the heater is avoided, thus improving the service life and removal efficiency of the carbon monoxide removal catalyst 202. In the third implementation described above, the heater 400 can be installed in the first pipe section 171 within the third outer casing 170, and the spray grille 500 can be installed in the second pipe section 172. For example, the spray grille 500 can be installed in the horizontal section of the second pipe section 172.
[0055] Optional, such as Figure 3 , Figure 4 and Figure 5 As shown, the integrated coupling device for denitrification and carbon monoxide removal may further include a flow equalization component 600 installed within the second channel 102 of the flue gas flow pipe 100 and located between the injection grille 500 and the denitrification catalyst 203. Here, by providing the flow equalization component 600, the uniformity of the flue gas introduced to the denitrification catalyst 203 can be effectively improved, further enhancing the removal efficiency of nitrogen oxides from the flue gas by the denitrification catalyst 203.
[0056] In the embodiments of this application, such as Figure 3 , Figure 4 and Figure 5 As shown, the integrated coupling device for denitrification and carbon monoxide removal may further include a GGH heat exchanger 700 fixed on a support 300. The GGH heat exchanger 700 may have a first flue gas inlet k1 and a first flue gas outlet k2 that are interconnected, and a second flue gas inlet k3 and a second flue gas outlet k4 that are interconnected. The first flue gas outlet k2 of the GGH heat exchanger 700 may be connected to the inlet of the first channel 101 in the flue gas flow pipe 100, and the second flue gas inlet k3 of the GGH heat exchanger 700 may be connected to the outlet of the second channel 102 in the flue gas flow pipe 100. Here, the GGH heat exchanger 700 can be connected to the inlet of the first channel 101 and the outlet of the second channel 102 in the flue gas flow pipe 100 via two flues, respectively.
[0057] Here, the flue gas enters through the first inlet k1 and passes through the GGH heat exchanger 700 for heat exchange. It then enters the flue gas flow pipe 100 through the first outlet k2 and enters the carbon monoxide removal catalyst 202 to treat the carbon monoxide in the flue gas. The carbon monoxide removal catalyst 202 and the denitrification catalyst 203 are set separately in the device. The flue gas is heated by the heater 400 and ammonia is injected through the injection grid 500. The flue gas enters the denitrification catalyst 203 to treat the nitrogen oxides in the flue gas. It then returns to the GGH 700 through the second inlet k3 for flue gas heat exchange and finally flows out through the second outlet k4, the induced draft fan, and the chimney.
[0058] For example, such as Figure 3 , Figure 4 and Figure 5 As shown, the GGH heat exchanger 700 and the flue gas flow pipe 100 are arranged along the first direction f1. The support 300 may have a hollow cavity 301, and the GGH heat exchanger 700 can be fixed inside the hollow cavity 301 of the support 300. In this way, by setting a hollow cavity 301 in the support 300, the GGH heat exchanger 700 can be installed inside the hollow cavity 301, so as to further ensure the integration level of the denitrification and carbon monoxide removal integrated coupling device, solve the problem that a complete flue gas purification device cannot be configured in a compact plant area, and reduce investment costs at the same time.
[0059] This application also provides a flue gas system; please refer to [reference needed]. Figure 7 , Figure 7 This is a structural block diagram of a flue gas system provided in an embodiment of this application. The flue gas system may include: a desulfurization device 001 and an integrated coupling device for denitrification and carbon monoxide removal 000. The desulfurization device 001 may be connected to the inlet of the first channel 101 in the integrated coupling device for denitrification and carbon monoxide removal.
[0060] For example, after the sintering flue gas undergoes desulfurization treatment in the desulfurization unit 001, it passes through the GGH heat exchanger 700 for heat exchange, and then enters the flue gas flow pipe 100 to treat the carbon monoxide in the flue gas by the carbon monoxide removal catalyst 202. The carbon monoxide removal catalyst 202 and the denitrification catalyst 203 are set separately in the unit. The flue gas is heated by the heating furnace 400, and ammonia is injected through the injection grid 500. The flue gas then enters the denitrification catalyst 203 to treat the nitrogen oxides in the flue gas, and finally returns to the GGH 700 for flue gas heat exchange, and flows out by the induced draft fan and the chimney.
[0061] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.
[0062] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An integrated coupling device for denitrification and carbon monoxide removal, characterized in that, include: Flue gas flow pipe, catalyst assembly and support; The flue gas flow pipe and the support are distributed along a first direction; The flue gas flow pipe has a first channel and a second channel arranged along a second direction and interconnected with each other, at least a portion of the first channel extends along the first direction, at least a portion of the second channel extends along the first direction, and the second direction is perpendicular to the first direction; The catalyst assembly includes a support beam, a carbon monoxide removal catalyst, and a denitrification catalyst. The support beam is fastened to the flue gas flow pipe and the bracket, respectively. The carbon monoxide removal catalyst is installed on the support beam and located in the inlet area of the first channel. The denitrification catalyst is installed on the support beam and located in the outlet area of the second channel. The flue gas flows through the carbon monoxide removal catalyst in the first channel to the denitrification catalyst in the second channel.
2. The integrated coupling device for denitrification and carbon monoxide removal according to claim 1, characterized in that, The flue gas flow pipe includes: an outer shell and a partition plate, wherein the partition plate is fixedly connected to the cavity of the outer shell and divides the cavity of the outer shell into the first channel and the second channel; the carbon monoxide removal catalyst and the denitrification catalyst are distributed on both sides of the partition plate; The partition has an opening between its outer side and the inner wall of the outer shell cavity, which connects the first channel and the second channel.
3. The integrated coupling device for denitrification and carbon monoxide removal according to claim 1, characterized in that, The flue gas flow pipe includes: a first outer shell and a second outer shell distributed along the second direction, the first outer shell having the first channel, the second outer shell having the second channel, and the first outer shell and the second outer shell being an integral structure.
4. The integrated coupling device for denitrification and carbon monoxide removal according to claim 1, characterized in that, The flue gas flow pipe includes: a first outer shell, a third outer shell, a second outer shell, and a first partition. The first outer shell and the third outer shell are arranged and connected along the first direction, and the second outer shell is arranged along the second direction with the first outer shell and the third outer shell. A portion of the first partition is fixed between the second outer shell and the first outer shell and forms part of a first channel with the first outer shell. Another portion of the first partition is fixed between the second outer shell and the third outer shell. A first opening communicating between the third outer shell and the second outer shell is provided between one outer side of the first partition and the inner wall of the cavity of the second outer shell. The second outer shell and the first partition form a second channel. The third outer shell has another portion of the first channel. The carbon monoxide removal catalyst is distributed inside the first outer shell. The third outer shell has a first pipe segment connected to the first outer shell, and a second pipe segment connected to the first pipe segment and the second outer shell. The inner diameter of the first pipe segment gradually decreases in the direction away from the first outer shell and closer to the second pipe segment.
5. The integrated coupling device for denitrification and carbon monoxide removal according to claim 3, characterized in that, The support beam includes two sets of frame beams that are separately arranged. One set of frame beams is connected to the first outer shell and the bracket respectively and is used to install the carbon monoxide removal catalyst; the other set of frame beams is connected to the second outer shell and the bracket respectively and is used to install the denitrification catalyst.
6. The integrated coupling device for denitrification and carbon monoxide removal according to claim 1, characterized in that, The number of carbon monoxide removal catalysts is multiple, and the multiple groups of carbon monoxide removal catalysts are arranged in an array along the first direction, and / or the number of denitrification catalysts is multiple, and the multiple groups of denitrification catalysts are arranged in an array along the first direction.
7. The integrated coupling device for denitrification and carbon monoxide removal according to any one of claims 1-6, characterized in that, The integrated coupling device for denitrification and decarbon monoxide removal further includes a heating furnace and a spray grid, both of which are installed in the first channel, and the spray grid is located on the side of the heating furnace away from the decarbon monoxide removal catalyst and close to the denitrification catalyst.
8. The integrated coupling device for denitrification and carbon monoxide removal according to claim 7, characterized in that, The integrated coupling device for denitrification and carbon monoxide removal further includes a flow equalization component installed in the second channel and located between the injection grid and the denitrification catalyst.
9. The integrated coupling device for denitrification and carbon monoxide removal according to claim 7, characterized in that, The integrated coupling device for denitrification and carbon monoxide removal further includes: a GGH heat exchanger fixed on the support, the GGH heat exchanger having a first flue gas inlet and a first flue gas outlet connected to each other, and a second flue gas inlet and a second flue gas outlet connected to each other; The first smoke outlet is connected to the inlet of the first channel, and the second smoke inlet is connected to the outlet of the second channel.
10. A flue gas system, characterized in that, include: The desulfurization device and the integrated coupling device for denitrification and carbon monoxide removal as described in any one of claims 1-9, wherein the desulfurization device is connected to the inlet of the first channel in the integrated coupling device for denitrification and carbon monoxide removal.