Denitration and carbon monoxide removal integrated coupling device and flue gas system
By setting up an integrated coupling device for denitrification and decarbonization of carbon monoxide in the flue gas circulation pipe, the problems of low carbon monoxide emission reduction efficiency and catalysts are easily poisoned and inactivated in the sintered flue gas are solved, efficient removal and service life are achieved, while reducing costs and arrangement problems.
Patent Information
- Application Number
- CN202510496804.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-06-27
AI Technical Summary
In the prior art, carbon monoxide emission reduction in sintered flue gas lacks effective technical means, insufficient catalyst installation leads to low removal efficiency, and catalysts are prone to poisoning and inactivated, and have a short service life.
An integrated coupling device for denitrification and decarbonization of carbon monoxide was designed. By setting an integrated structure in the flue gas circulation pipe, the decarbonization catalyst and the denitrition catalyst are isolated and arranged in the two channels of the flue gas circulation pipe respectively. The flue gas flows smoothly and has low resistance to avoid catalyst poisoning and inactivation.
It achieves efficient removal of carbon monoxide in flue gas, extends the service life of the catalyst, and at the same time, through compact device design, the site layout problem is solved and the cost of structural civil engineering is reduced.
Smart Images
Figure CN120212756A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of flue gas purification equipment, and particularly to an integrated coupling device for denitrification and carbon monoxide removal and a flue gas system. Background Art
[0002] The reduction of carbon monoxide emissions in the iron and steel sintering industry has always been highly regarded. However, there is still a lack of effective technical means for reducing carbon monoxide emissions in sintering flue gas. Due to the temperature characteristics of sintering flue gas and the problem of carbon monoxide emission concentration, the catalytic oxidation process is mainly used for the treatment of carbon monoxide emission reduction. Currently, in different flue gas treatment processes, for example, a carbon monoxide catalyst is installed in the SCR inlet flue. Since the flue is relatively narrow, it is impossible to install a sufficient amount of catalyst, resulting in a low carbon monoxide removal efficiency. In addition, due to the high flue gas flow rate in the flue, the catalyst resistance is large. For example, a carbon monoxide catalyst is installed in the SCR reactor. Due to the limitations of the SCR reactor itself, generally only one layer of carbon monoxide catalyst can be installed. Particularly prominent is that because there is a large amount of ammonia in the SCR reactor, the removal efficiency of the carbon monoxide catalyst is reduced, and even problems such as poisoning and inactivation of the carbon monoxide catalyst occur, resulting in a short service life of the carbon monoxide catalyst.
[0003] Therefore, there is an urgent need for an integrated coupling device for denitrification and carbon monoxide removal that can achieve transformation and layout in different sites, save costs, and ensure the carbon monoxide removal efficiency. Summary of the Invention
[0004] An embodiment of the present application provides an integrated coupling device for denitrification and carbon monoxide removal. It can solve the problem in the prior art that there is an urgent need for an integrated coupling device for denitrification and carbon monoxide removal that can achieve transformation and layout in different sites, save costs, and ensure the carbon monoxide removal efficiency. The technical solution is as follows:
[0005] On the one hand, an integrated coupling device for denitrification and carbon monoxide removal is provided. The integrated coupling device for denitrification and carbon monoxide removal includes:
[0006] A flue gas circulation pipe, a catalyst assembly, and a bracket;
[0007] The flue gas circulation pipe and the bracket are distributed along a first direction;
[0008] The flue gas circulation pipe has a first channel and a second channel that are arranged along a second direction and communicate with each other. At least part of the first channel extends along the first direction, and at least part of the second channel extends along the first direction. The second direction is perpendicular to the first direction;
[0009] The catalyst assembly includes: a support beam, a carbon monoxide removal catalyst, and a denitration catalyst. The support beam is fixedly connected to the flue gas flow pipe and the support bracket respectively. The carbon monoxide removal catalyst is installed on the support beam and located in the inlet area of the first channel; the denitration 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 and then flows to the denitration catalyst in the second channel.
[0010] Optionally, the flue gas flow pipe includes: an outer shell and a partition. The partition is fixedly connected inside 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 denitration catalyst are distributed on both sides of the partition.
[0011] Wherein, there is an opening between one outer side edge of the partition and the inner wall of the cavity of the outer shell to communicate 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 has the first channel, the second outer shell has the second channel, and the first outer shell and the second outer shell are of an integral structure.
[0013] Optionally, the flue gas flow pipe includes: a first outer periphery shell, a third outer shell, a second outer periphery shell, and a first partition. The first outer periphery shell and the third outer shell are arranged and connected along the first direction, and the second outer periphery shell is arranged with the first outer periphery shell and the third outer shell along the second direction; a part of the first partition is fixed between the second outer periphery shell and the first outer periphery shell and encloses a part of the first channel with the first outer periphery shell, and another part of the first partition is fixed between the second outer periphery shell and the third outer shell. And there is a first opening between one outer side edge of the first partition and the inner wall of the cavity of the second outer periphery shell to communicate the third outer shell and the second outer periphery shell. The second outer periphery shell and the first partition enclose the second channel; the third outer shell has the other part of the first channel, and the carbon monoxide removal catalyst is distributed in the first outer periphery shell.
[0014] Wherein, the third outer shell has a first pipe section connected to the first outer periphery shell and a second pipe section connecting the first pipe section and the second outer periphery shell. The inner diameter of the first pipe section gradually decreases in the direction away from the first outer periphery shell and towards the second pipe section.
[0015] Optionally, the support beam includes two sets of frame beams arranged separately. One set of the frame beams is respectively connected to the first outer casing and the support and is used for installing the carbon monoxide removal catalyst; the other set of the frame beams is respectively connected to the second outer casing and the support and is used for installing the denitration catalyst.
[0016] Optionally, the number of the carbon monoxide removal catalysts is multiple groups, and the multiple groups of carbon monoxide removal catalysts are arranged in an array along the first direction, and / or the number of the denitration catalysts is multiple groups, and the multiple groups of denitration catalysts are arranged in an array along the first direction.
[0017] Optionally, the integrated coupling device for denitration and carbon monoxide removal further includes: a heating furnace and a spray grid. The heating furnace and the spray grid are both installed in the first channel, and the spray grid is located on the side of the heating furnace away from the carbon monoxide removal catalyst and close to the denitration catalyst.
[0018] Optionally, the integrated coupling device for denitration and carbon monoxide removal further includes: a flow equalizing component installed in the second channel and located between the spray grid and the denitration catalyst.
[0019] Optionally, the integrated coupling device for denitration and carbon monoxide removal further includes: a GGH heat exchanger fixed on the support. The GGH heat exchanger has a first flue gas inlet and a first flue gas outlet that communicate with each other, and a second flue gas inlet and a second flue gas outlet that communicate with each other;
[0020] Wherein, the first flue gas outlet communicates with the inlet of the first channel, and the second flue gas inlet communicates with the outlet of the second channel.
[0021] On the other hand, a flue gas system is provided. The flue gas system includes: a desulfurization device and an integrated coupling device for denitration and carbon monoxide removal. The desulfurization device is communicated with the inlet of the first channel in the integrated coupling device for denitration and carbon monoxide removal, and the integrated coupling device for denitration and carbon monoxide removal is the integrated coupling device for denitration and carbon monoxide removal given in any of the above.
[0022] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:
[0023] By setting up an integrated flue gas flow pipe in the integrated coupling device for denitrification and carbon monoxide removal, the carbon monoxide removal catalyst and the denitrification catalyst are separately isolated and arranged in two channels of the flue gas flow pipe. The flue gas flows smoothly with low resistance, effectively avoiding the inactivation of the carbon monoxide catalyst due to poisoning, not only ensuring the carbon monoxide removal efficiency but also increasing the service life. In addition, while installing the catalyst, the support beam installs the integrated flue gas flow pipe on the bracket, achieving a compact configuration of the equipment space, effectively solving the problem of layout in a compact engineering site. At the same time, through the setting of the integrated structure of the flue gas flow pipe, the costs of structure, civil engineering, etc. are greatly reduced, and more convenient system operation, maintenance and repair are realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0025] Figure 1 is a schematic structural diagram of an integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application;
[0026] Figure 2 is a schematic structural diagram of a support beam provided by an embodiment of the present application;
[0027] Figure 3 is a schematic structural diagram of another integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application;
[0028] Figure 4 is a schematic structural diagram of yet another integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application;
[0029] Figure 5 is a schematic structural diagram of still another integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application;
[0030] Figure 6 is a schematic layout diagram of the support beams in the first channel provided by an embodiment of the present application;
[0031] Figure 7 is a schematic block diagram of a flue gas system provided by an embodiment of the present application.
[0032] Among them, there are 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 denitration catalyst 203, an outer housing 110, a partition 120, an opening 103, a first outer housing 130, a second outer housing 140, a frame beam 201a, a heating furnace 400, a spray grid 500, and a GGH heat exchanger 700.
[0033] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Specific Embodiments
[0034] To make the objectives, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the drawings.
[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0036] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, the "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner.
[0037] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an integrated coupling device for denitration and carbon monoxide removal provided by an embodiment of the present application. The integrated coupling device for denitration 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 the support 300 in the integrated coupling device for denitration and carbon monoxide removal can be distributed along the first direction f1.
[0039] The flue gas flow pipe 100 in the integrated coupling device for denitrification and carbon monoxide removal may have a first channel 101 and a second channel 102 arranged along the second direction f2 and communicating with each other. At least part of the first channel 101 may extend along the first direction f1, at least part of the second channel 102 may extend along the first direction f1, and the second direction f2 may be perpendicular to the first direction f1.
[0040] The catalyst assembly 200 in the integrated coupling device for denitrification and carbon monoxide removal may include: a support beam 201, a carbon monoxide removal catalyst 202, and a denitrification catalyst 203. The support beam 201 may be fixedly connected to the flue gas flow pipe 100 and the support 300 respectively. The carbon monoxide removal catalyst 202 may be installed on the support beam 201 and located in the inlet area of the first channel 101, and the denitrification catalyst 203 may be installed on the support beam 201 and located in the outlet area of the second channel 102. Among them, the flue gas may flow through the carbon monoxide removal catalyst 202 in the first channel of the flue gas flow pipe 100 and then flow 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 material is carried in the installation shell.
[0041] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of a support beam provided by an embodiment of the present application. The support beam 201 may be a frame structure formed by cross-connecting a plurality of support plates 2011.
[0042] In the embodiment of the present application, 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 arranged in two channels of the flue gas flow pipe 100. The flue gas flows smoothly with low resistance, effectively avoiding the inactivation of the carbon monoxide removal catalyst due to poisoning, not only ensuring the carbon monoxide removal efficiency but also improving the service life. In addition, the support beam 201 installs the integrated flue gas flow pipe 100 on the support 300 while installing the catalyst, realizing a compact configuration of the equipment space, effectively solving the problem of difficult layout in a compact engineering site. At the same time, by setting the integrated structure of the flue gas flow pipe, the costs of structure and civil engineering are greatly reduced, and more convenient system operation, maintenance and overhaul are realized.
[0043] In summary, the embodiment of the present application provides an integrated coupling device for denitrification and carbon monoxide removal, which may include: a flue gas circulation pipe, a catalyst assembly, and a support. By providing an integrated flue gas circulation pipe in the integrated coupling device for denitrification and carbon monoxide removal, the carbon monoxide removal catalyst and the denitrification catalyst are separately arranged in two channels of the flue gas circulation pipe. The flue gas flows smoothly with low resistance, effectively avoiding the inactivation of the carbon monoxide catalyst due to poisoning, not only ensuring the carbon monoxide removal efficiency but also improving the service life. In addition, the support beam installs the integrated flue gas circulation pipe on the support while installing the catalyst, achieving a compact configuration of the equipment space, effectively solving the problem of difficult layout in compact engineering sites. At the same time, through the setting of the integrated structure of the flue gas circulation pipe, the costs of structure and civil engineering are greatly reduced, and more convenient system operation, maintenance, and repair are realized.
[0044] Optionally, there are various optional implementation manners for the integrated flue gas circulation pipe in the present application. The following embodiments of the present application will be schematically described by taking two optional implementation manners as examples:
[0045] For the first optional implementation manner, please refer to Figure 3 , Figure 3 which is a schematic structural diagram of another integrated coupling device for denitrification and carbon monoxide removal provided by the embodiment of the present application. The flue gas circulation pipe 100 may include: an outer shell 110 and a partition 120. The partition 120 may be fixedly connected inside the cavity of the outer shell 110 to divide the cavity of the outer shell 110 into a first channel 101 and a second channel 102. The carbon monoxide removal catalyst 202 and the denitrification catalyst 203 may be distributed on both sides of the partition 120. Among them, there may be an opening 103 between one outer side edge of the partition 120 and the inner wall of the cavity of the outer shell 110 to connect the first channel 101 and the second channel 102. In this case, by providing an outer shell 110 with an opening, after the partition 120 is fixed inside 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 is defined as the inlet of the first channel 101 and the outlet of the second channel 102. In this way, it is ensured that the structure of the flue gas circulation pipe 100 is simple and the degree of integration is relatively high, achieving a compact configuration of the equipment space and effectively solving the problem of difficult layout in compact engineering sites. It should be noted that the partition may be fixedly connected to the outer shell by welding or other means, or the partition and the outer shell may also be an integral structure. The embodiment of the present application does not make specific limitations on this. It should also be noted that the support beam 201 here may be an integral frame beam for supporting and installing the carbon monoxide removal catalyst 202 and the denitrification catalyst 203.
[0046] For the second optional implementation manner, please refer to Figure 4 , Figure 4It is a schematic structural diagram of another integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application. The flue gas circulation pipe 100 may include: a first outer casing 130 and a second outer casing 140 distributed along the second direction. The first outer casing 130 has a first channel 101, and the second outer casing 140 may have a second channel 102, and the first outer casing 130 and the second outer casing 140 are an integral structure. In this case, by setting the flue gas circulation pipe 100 as the integrally arranged first outer casing 130 and second outer casing 140, thus, it is ensured that the structure of the flue gas circulation pipe is simple and the integration degree is relatively high, realizing the compact configuration of the equipment space and effectively solving the problem of the layout of compact engineering sites. It should be noted that the first outer casing 130 and the second outer casing 140 may respectively be in a tubular structure, and the first outer casing 130 and the second outer casing 140 may also be fixedly connected by welding or other means. For example, the flue gas circulation pipe 100 may further include: a transition connecting pipe 150 located between the first outer casing 130 and the second outer casing 140, and the flue gas circulation pipe may be in a "U" shape.
[0047] In the embodiment of the present application, as Figure 4 shown, the support beam 201 in the catalyst assembly 200 may include two sets of frame beams 201a that are separately arranged. One set of frame beams 201a may be respectively connected to the first outer casing 130 and the support 300 and used for installing the carbon monoxide removal catalyst 202; the other set of frame beams 201a may be respectively connected to the second outer casing 140 and the support 300 and used for installing 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, and the assembly convenience of the integrated coupling device for denitrification and carbon monoxide removal is improved.
[0048] The second optional implementation manner, please refer to Figure 5 , Figure 5It is a schematic structural diagram of another integrated coupling device for denitrification and carbon monoxide removal provided by an embodiment of the present application. The flue gas flow pipe 100 includes: a first outer casing 160, a third outer casing 170, a second outer casing 180, and a first partition 190. The first outer casing 160 and the third outer casing 170 are arranged and connected along a first direction f1, and the second outer casing 180 is arranged with the first outer casing 160 and the third outer casing 170 along a second direction f2. A part of the first partition 190 is fixed between the second outer casing 180 and the first outer casing 160 and encloses a part of a first channel 101 with the first outer casing 160. Another part of the first partition 190 is fixed between the second outer casing 180 and the third outer casing 170, and there is a first opening 104 communicating the third outer casing 170 and the second outer casing 180 between an outer side edge of the first partition 190 and the inner wall of the cavity of the second outer casing 180. A second channel 102 is formed between the second outer casing 180 and the first partition 190. The third outer casing 170 has another part of the first channel 101, and the carbon monoxide removal catalyst 202 can be distributed in the first outer casing 160.
[0049] Wherein, 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 a direction away from the first outer casing 160 and close to the second pipe section 172. In this way, by arranging the first outer casing 160 and the third outer casing 170 to form the first channel 101 after connection, the smoothness of the flue gas flowing in the first channel 101 is further improved. Here, the second pipe section 172 can be composed of a vertical pipe section, an arc pipe section, and a horizontal pipe section. The two ends of the arc pipe section are respectively fixedly connected to one end of the vertical pipe section and one end of the horizontal pipe section. 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. Exemplarily, the inner diameters of the vertical pipe section, the arc pipe section, and the horizontal pipe section in the second pipe section 172 can be the same.
[0050] It should be noted that a part of the first partition 190 is reused by the first outer casing 160 and the second outer casing 180. The first outer casing 160, the third outer casing 170, the second outer casing 180, and the first partition 190 can be fixedly connected by welding, or the first outer casing 160, the third outer casing 170, the second outer casing 180, and the first partition 190 can be of an integral structure.
[0051] Optionally, the number of carbon monoxide removal catalysts 202 in the catalyst assembly 200 can be multiple groups, and the multiple groups of carbon monoxide removal catalysts 202 can be arranged in an array along the first direction f1, and / or, the number of denitration catalysts 203 can be multiple groups, and the multiple groups of denitration catalysts 203 can be arranged in an array along the first direction f1.
[0052] Exemplarily, the number of carbon monoxide removal catalysts 202 in the catalyst assembly 200 can be multiple groups, and the multiple groups of carbon monoxide removal catalysts 202 can be evenly distributed along the first direction f1. Each group of carbon monoxide removal catalysts 202 includes a plurality of carbon monoxide removal catalysts 202. In this way, for the integrated structure flue gas flow pipe 100 designed for the denitration catalyst 203 and the carbon monoxide removal catalyst 202, multiple layers of carbon monoxide removal catalysts 202 can be arranged in the first channel 101 of the flue gas flow pipe 100, ensuring a good removal effect on carbon monoxide in the flue gas. Exemplarily, the number of carbon monoxide removal catalysts 202 can be two groups.
[0053] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the arrangement of the support beams in the first channel provided by the embodiment of the present application. The number of denitration catalysts 203 in the catalyst assembly 200 can be multiple groups, and the multiple groups of denitration catalysts 203 can be evenly distributed along the first direction f1. Each group of denitration catalysts 203 includes a plurality of denitration catalysts 203. In this way, multiple layers of denitration catalysts 203 are arranged in the second channel 102 of the flue gas flow pipe 100, ensuring a good removal effect on nitrogen oxides in the flue gas. It should be noted that when there are multiple groups of denitration catalysts 203, there can be multiple frame beams 201a corresponding to one group of denitration catalysts 203, and the multiple frame beams 201a are connected to the multiple groups of denitration catalysts 203 in one-to-one correspondence.
[0054] In the embodiment of the present application, as Figure 3 , Figure 4 and Figure 5As shown in the figure, the integrated coupling device for denitrification and carbon monoxide removal may further include: a heating furnace 400 and a spray grid 500. Both the heating furnace 400 and the spray grid 500 may be installed in the first channel 101 of the flue gas flow pipe 100, and the spray grid 500 may be located on the side of the heating furnace 400 away from the carbon monoxide removal catalyst 202 and close to the denitrification catalyst 203. In this way, by arranging the carbon monoxide removal catalyst 202 in front of the heating furnace 400, the carbon monoxide removal catalyst 202 is prevented from being sulfur poisoned and deactivated due to the influence of the heating furnace, and the service life and removal efficiency of the carbon monoxide removal catalyst 202 are improved. In the above third implementation manner, the heating furnace 400 may be installed in the first pipe section 171 of the third outer casing 170, and the spray grid 500 may be installed in the second pipe section 172. For example, the spray grid 500 may be installed in the horizontal pipe section of the second pipe section 172.
[0055] Optionally, as Figure 3 , Figure 4 and Figure 5 shown in the figure, the integrated coupling device for denitrification and carbon monoxide removal may further include: a flow equalizing component 600 installed in the second channel 102 of the flue gas flow pipe 100 and located between the spray grid 500 and the denitrification catalyst 203. Here, by arranging the flow equalizing component 600, the flow equalization degree of the flue gas introduced to the denitrification catalyst 203 can be effectively improved, and the denitrification effect of the denitrification catalyst 203 on nitrogen oxides in the flue gas can be further improved.
[0056] In the embodiments of the present application, as Figure 3 , Figure 4 and Figure 5 shown in the figure, the integrated coupling device for denitrification and carbon monoxide removal may further include: a GGH heat exchanger 700 fixed on the bracket 300. The GGH heat exchanger 700 may have a first flue gas inlet k1 and a first flue gas outlet k2 that communicate with each other, and a second flue gas inlet k3 and a second flue gas outlet k4 that communicate with each other. Among them, the first flue gas outlet k2 in the GGH heat exchanger 700 may be communicated with the inlet of the first channel 101 in the flue gas flow pipe 100, and the second flue gas inlet k3 in the GGH heat exchanger 700 may be communicated with the outlet of the second channel 102 in the flue gas flow pipe 100. Here, the GGH heat exchanger 700 may 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 through two flue ducts respectively.
[0057] Here, the flue gas exchanges heat through the GGH heat exchanger 700 from the first flue gas inlet k1, enters the carbon monoxide removal catalyst 202 in the flue gas circulation pipe 100 through the first flue gas outlet k2 to process the carbon monoxide in the flue gas. The carbon monoxide removal catalyst 202 and the denitration catalyst 203 in the device are separately arranged. The flue gas is heated by the heating furnace 400, ammonia is injected at the injection grid 500, the flue gas enters the denitration catalyst 203 to process the nitrogen oxides in the flue gas, returns to the GGH 700 through the second flue gas inlet k3 for flue gas heat exchange, and finally flows out through the second flue gas outlet k4, the induced draft fan and the chimney.
[0058] Exemplarily, as Figure 3 、 Figure 4 and Figure 5 shown, the GGH heat exchanger 700 and the flue gas circulation pipe 100 are arranged along the first direction f1. The support 300 can have a hollow cavity 301, and the GGH heat exchanger 700 can be fixed in the hollow cavity 301 of the support 300. In this way, by arranging the hollow cavity 301 in the support 300, the GGH heat exchanger 700 can be installed in the hollow cavity 301 to further ensure the integration degree of the denitration 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 at the same time reduce the investment cost.
[0059] The embodiment of the present application also provides a flue gas system. Please refer to Figure 7 , Figure 7 which is a structural block diagram of a flue gas system provided by the embodiment of the present application. The flue gas system can include: a desulfurization device 001 and an integrated coupling device 000 for denitration and carbon monoxide removal. The desulfurization device 001 can be communicated with the inlet of the first channel 101 in the integrated coupling device for denitration and carbon monoxide removal.
[0060] Exemplarily, after the sintering flue gas is desulfurized by the desulfurization device 001, it exchanges heat through the GGH heat exchanger 700, enters the carbon monoxide removal catalyst 202 in the flue gas circulation pipe 100 to process the carbon monoxide in the flue gas. The carbon monoxide removal catalyst 202 and the denitration catalyst 203 in the device are separately arranged. The flue gas is heated by the heating furnace 400, ammonia is injected at the injection grid 500, the flue gas enters the denitration catalyst 203 to process the nitrogen oxides in the flue gas, and finally returns to the GGH 700 for flue gas heat exchange and flows out through the induced draft fan and the chimney.
[0061] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.
[0062] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. An integrated coupling device for denitration and carbon monoxide removal, characterized in that: include: Flue gas flow tubes, catalyst assemblies and brackets; The smoke flow pipe and the bracket are distributed along a first direction; The smoke flow pipe has a first channel and a second channel arranged along a second direction and connected to 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 decarbon monoxide catalyst and a denitrification catalyst. The support beam is tightly connected to the flue gas circulation pipe and the bracket respectively. The decarbon monoxide 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 passes through the decarbon monoxide catalyst in the first channel and flows to the denitrification catalyst in the second channel.
2. The integrated coupling device for denitration and carbon monoxide removal according to claim 1, characterized in that: The flue gas flow pipe comprises: an outer shell and a partition, wherein the partition is fixedly connected in 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 denitration catalyst are distributed on both sides of the partition; Wherein, an opening connecting the first channel and the second channel is provided between an outer side edge of the partition and the inner wall of the cavity of the peripheral shell.
3. The integrated coupling device for denitration and carbon monoxide removal according to claim 1, characterized in that: The smoke flow pipe includes: a first outer shell and a second outer shell distributed along the second direction, the first outer shell has the first channel, the second outer shell has the second channel, and the first outer shell and the second outer shell are an integrated structure.
4. The integrated coupling device for denitration and carbon monoxide removal according to claim 1, characterized in that: The flue gas circulation 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, the second outer shell and the first outer shell and the third outer shell are arranged along the second direction; a part of the first partition is fixed between the second outer shell and the first outer shell and forms a part of the first channel with the first outer shell, another part of the first partition is fixed between the second outer shell and the third outer shell, and an outer side of the first partition and the inner wall of the cavity of the second outer shell have a first opening connecting the third outer shell and the second outer shell, and the second outer shell and the first partition form a second channel; the third outer shell has another part of the first channel, and the carbon monoxide removal catalyst is distributed in the first outer shell; The third outer shell has a first pipe segment connected to the first outer shell, and a second pipe segment connecting the first pipe segment and the second outer shell, and the inner diameter of the first pipe segment gradually decreases in a direction away from the first outer shell and approaching the second pipe segment.
5. The integrated coupling device for denitration and carbon monoxide removal according to claim 3, characterized in that: The support beam includes two sets of frame beams which are separately arranged, one set of frame beams is respectively connected to the first outer shell and the bracket and is used to install the decarbon monoxide catalyst; the other set of frame beams is respectively connected to the second outer shell and the bracket and is used to install the denitrification catalyst.
6. The integrated coupling device for denitration and carbon monoxide removal according to claim 1, characterized in that: The number of the 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 the denitration catalysts is multiple, and the multiple groups of denitration catalysts are arranged in an array along the first direction.
7. The integrated coupling device for denitration and carbon monoxide removal according to any one of claims 1 to 6, characterized in that: The integrated coupling device for denitration and decarbon monoxide further includes: a heating furnace and an injection grid, wherein the heating furnace and the injection grid are both installed in the first channel, and the injection grid is located on a side of the heating furnace away from the decarbon monoxide catalyst and close to the denitration catalyst.
8. The integrated coupling device for denitration and carbon monoxide removal according to claim 7, characterized in that: The integrated coupling device for denitration and carbon monoxide removal further includes: a flow equalizing component installed in the second channel and located between the injection grid and the denitration catalyst.
9. The integrated coupling device for denitration and carbon monoxide removal according to claim 7, characterized in that: The integrated coupling device for denitration and carbon monoxide removal further comprises: a GGH heat exchanger fixed on the bracket, the GGH heat exchanger having a first smoke inlet and a first smoke outlet connected to each other, and a second smoke inlet and a second smoke outlet connected to each other; Wherein, the first smoke outlet is communicated with the inlet of the first channel, and the second smoke inlet is communicated with the outlet of the second channel.
10. A flue gas system, characterized in that: include: A desulfurization device and an integrated coupling device for denitrification and decarbon monoxide removal as claimed in any one of claims 1 to 9, wherein the desulfurization device is connected to the inlet of the first channel in the integrated coupling device for denitrification and decarbon monoxide removal.