Modular fixed bed desulfurization and denitrification treatment device and flue gas treatment equipment
By using a modular fixed-bed design and a distributed layout for the desulfurization and denitrification equipment, the problems of inconvenient expansion and high maintenance costs of existing equipment have been solved, achieving efficient purification and flexible expansion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI ZHONGKE LANGBO ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-23
AI Technical Summary
Existing desulfurization and denitrification equipment is not easy to expand and standardize for mass production, and it suffers from problems such as bulky equipment, easy clogging, uneven airflow distribution, and high maintenance costs.
It adopts a modular fixed bed design, which includes independent desulfurizing agent layer and denitrifying agent layer. Combined with louver structure and horizontal partition cavity design, the distributed layout of the main flue gas pipeline and branch pipelines enables independent installation and replacement of desulfurization and denitrification units, supports flexible configuration and expansion, reduces maintenance costs, and enhances system stability and purification efficiency.
It achieves efficient purification in the desulfurization and denitrification process, allows for flexible expansion, reduces maintenance costs, improves production adaptability and equipment utilization, and solves the problems of poor adaptability and high operation and maintenance costs of traditional equipment.
Smart Images
Figure CN224388495U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of desulfurization and denitrification, and more specifically, it relates to a modular fixed-bed desulfurization and denitrification treatment device. This utility model also relates to a flue gas treatment device. Background Technology
[0002] Flue gas desulfurization and denitrification technology is a boiler flue gas purification technology applied in the chemical industry, which generates nitrogen oxides and sulfur oxides. Nitrogen oxides and sulfur oxides are among the main sources of air pollution.
[0003] Desulfurization and denitrification technologies are mainly classified into the following categories: Wet desulfurization and denitrification: These utilize water as the reaction medium, commonly including the limestone-gypsum method and the ammonia method. Wet technologies are mature and have high desulfurization efficiency, typically exceeding 90%, but they generate liquid waste that is relatively complex to treat. Dry desulfurization and denitrification: These do not use water, reducing environmental impact. Common methods include activated carbon adsorption and electron beam radiation. Dry technologies have relatively simple equipment and low operating costs, but their desulfurization efficiency may be lower than that of wet methods. Semi-dry desulfurization and denitrification: These combine the advantages of wet and dry methods, typically using spray technology, which can reduce wastewater generation to some extent while maintaining high desulfurization efficiency.
[0004] The above methods require complex and costly equipment for denitrification and desulfurization of flue gas, and are not suitable for standardized mass production and expansion based on flue gas processing volume, thus requiring urgent improvement. Utility Model Content
[0005] The purpose of this invention is to provide a modular fixed-bed desulfurization and denitrification treatment device to solve the technical problem that existing desulfurization and denitrification equipment is not easy to expand and to carry out standardized mass production.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a modular fixed-bed desulfurization and denitrification treatment device, comprising:
[0007] Smoke inlet duct;
[0008] Smoke exhaust duct;
[0009] The loading and unloading assembly includes a loading pipeline and a unloading pipeline. The loading pipeline includes a desulfurizing agent loading pipeline and a denitrifying agent loading pipeline, and the unloading pipeline includes a desulfurizing agent unloading pipeline and a denitrifying agent unloading pipeline.
[0010] The processing module includes a housing and a desulfurization mechanism and a denitrification mechanism disposed within the housing. The housing has a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to the flue gas inlet pipe, and the flue gas outlet is connected to the flue gas outlet pipe. The desulfurization mechanism includes a desulfurizing agent layer and a first fixed shell. The denitrification mechanism includes a denitrification agent layer and a second fixed shell. Both the desulfurizing agent layer and the denitrification agent layer are disposed within the housing, and the thickness directions of the desulfurizing agent layer and the denitrification agent layer are perpendicular to the flue gas flow direction. The top of the first fixed shell is connected to the desulfurizing agent feeding pipe, and the bottom of the first fixed shell is provided with a first discharge valve connected to the desulfurizing agent discharging pipe. The top of the second fixed shell is connected to the denitrification agent feeding pipe, and the bottom of the second fixed shell is provided with a second discharge valve connected to the desulfurizing agent discharging pipe.
[0011] In one feasible implementation, the first fixed shell includes a first louver and a second louver, both disposed within the shell. The thickness direction of the first louver and the second louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the first louver and the second louver gradually decreases. A desulfurization space for filling the desulfurizing agent layer is formed between the first louver and the second louver.
[0012] The second fixed shell includes a third louver and a fourth louver, both disposed within the shell. The thickness direction of the third louver and the fourth louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the third louver and the fourth louver gradually decreases. A denitrification space for filling the denitrification agent layer is formed between the third louver and the fourth louver.
[0013] In one feasible implementation, the housing has a flue gas inlet chamber, a flue gas upward displacement chamber, and a flue gas outlet chamber. A transverse partition is provided inside the housing, and the transverse partition has a vent hole at the location of the flue gas upward displacement chamber. The flue gas inlet is located at the bottom of the housing and below the transverse partition, and the flue gas outlet is located at the top of the housing and above the transverse partition. Along the direction away from the flue gas inlet, a desulfurizing agent layer and a denitrifying agent layer are sequentially arranged inside the housing. The flue gas upward displacement chamber is formed by the denitrifying agent layer and the side wall of the housing. The flue gas flows along its own movement path from the flue gas inlet through the flue gas inlet chamber, the desulfurizing agent layer below the transverse partition, the denitrifying agent layer below the transverse partition, and the flue gas upward displacement chamber, and flows out from the flue gas outlet.
[0014] In one feasible implementation, the smoke inlet pipe includes a main smoke inlet pipe and multiple branch smoke inlet pipes all connected to the main smoke inlet pipe; the smoke exhaust pipe includes a main smoke exhaust pipe and multiple branch smoke exhaust pipes all connected to the main smoke exhaust pipe; there are multiple processing modules; each branch smoke inlet pipe is connected to a flue gas inlet on each of the housings; and each branch smoke exhaust pipe is connected to a branch smoke exhaust pipe on each of the housings.
[0015] In one feasible implementation, the denitrification agent feeding pipe includes a first feeding main pipe and a plurality of first feeding branch pipes, each connected to the first feeding main pipe, and the outlet of each first feeding branch pipe corresponds to the desulfurization space in each of the shells.
[0016] The desulfurizing agent feeding pipe includes a second feeding main pipe and a plurality of second feeding branch pipes, each connected to the second feeding main pipe. The outlet of each second feeding branch pipe corresponds to the desulfurization space in each of the shells.
[0017] In one feasible implementation, the modular fixed-bed desulfurization and denitrification treatment device further includes a fixed support, on which the flue gas inlet pipe, the flue gas outlet pipe, the loading and unloading assembly, and each of the treatment modules are all located.
[0018] In one feasible implementation, a first hopper is provided between the bottom of the first fixed shell and the first discharge valve, and a second hopper is provided between the bottom of the second fixed shell and the second discharge valve.
[0019] Compared with existing technologies, the modular fixed-bed desulfurization and denitrification treatment device provided by this utility model has the following advantages:
[0020] Firstly, by setting up independent desulfurizing and denitrifying agent layers, the flue gas fully contacts the desulfurizing and denitrifying agents during its flow, improving reaction efficiency. Combined with modularly designed processing modules, the desulfurization and denitrification units can be installed and replaced independently relative to the flue gas conveying pipeline, solving the bulky problem caused by the integrated structure of traditional devices. The loading and unloading components, through separate desulfurization / denitrification agent pipelines, achieve separate management and cyclic replenishment of the two catalysts, reducing maintenance costs and achieving flexible configuration and efficient purification. When flue gas treatment is required, the processing modules can be directly connected to the inlet and outlet flue gas pipelines. The number of processing modules can be flexibly set according to the flue gas processing capacity, thus solving the technical problems of existing desulfurization and denitrification equipment being inconvenient to expand and standardize for mass production.
[0021] Secondly, the louver structure, while fixing the catalyst, reduces pressure drop loss and enhances system stability, solving the technical problems of easy clogging and uneven airflow distribution in traditional fixed beds. The diaphragm and chamber structure (flue gas inlet chamber, flue gas upward chamber, and flue gas outlet chamber), combined with the sequential arrangement of the desulfurizing agent and denitrifying agent layers, force the flue gas to pass through the two-stage treatment zones sequentially, achieving efficient stepwise removal of sulfur and nitrates. The added diaphragms and the ventilation holes in them are adapted to the automatic upward movement path of the high-temperature flue gas, optimizing the flue gas upward path, avoiding turbulence interference, and forming secondary desulfurization and denitrification, thereby improving overall purification efficiency.
[0022] Furthermore, through the distributed layout of the main inlet and branch pipes, the main outlet and branch pipes, and the branched structure of the desulfurization / denitrification agent feeding pipes, multiple processing modules can be integrated in parallel to form a scalable modular system. This design solves the problem of limited capacity of a single processing unit, supports flexible addition or reduction of the number of modules according to the flue gas volume, and enables independent control and maintenance of each module, significantly improving production adaptability and equipment utilization. Meanwhile, the introduction of fixed supports integrates pipelines, processing modules, and other components onto a unified support structure, enhancing the overall integrity and ease of transportation of the device. This solves the problems of complex modular system assembly and low on-site installation efficiency, providing a standardized foundation for industrial-scale mass production.
[0023] Furthermore, the setup of the first and second hoppers, together with the discharge valve, forms a controllable discharge buffer space, which can prevent the catalyst from directly impacting the valve and causing wear. At the same time, it ensures the continuity and sealing of the discharge process, solving the technical problems of easy leakage and low efficiency when changing catalysts in traditional fixed beds.
[0024] Another objective of this utility model is to provide a flue gas treatment device, including the modular fixed bed desulfurization and denitrification treatment device mentioned above.
[0025] Compared with the prior art, the flue gas treatment equipment of this utility model has all the advantages of the above-mentioned modular fixed bed desulfurization and denitrification treatment device, which will not be elaborated here. In addition, by integrating the above-mentioned modular fixed bed desulfurization and denitrification treatment device, the flue gas treatment equipment of this utility model has the advantages of high efficiency purification, flexible expansion and easy maintenance, and is suitable for industrial scenarios of different scales. It solves the technical pain points of poor adaptability and high operation and maintenance costs caused by the rigid structure of traditional equipment. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0027] Figure 1 This is a front view of the modular fixed-bed desulfurization and denitrification treatment device provided by this utility model;
[0028] Figure 2 This is a schematic diagram of the internal structure of the treatment module in the modular fixed-bed desulfurization and denitrification treatment device of this utility model;
[0029] Figure 3 This is a schematic diagram of the structure of the first fixed shell and the second fixed shell in this utility model.
[0030] In the picture:
[0031] 1. Smoke inlet pipe; 11. Main smoke inlet pipe; 12. Branch smoke inlet pipe;
[0032] 2. Smoke exhaust duct; 21. Main smoke exhaust duct; 22. Branch smoke exhaust duct;
[0033] 3. Loading and unloading assembly; 31. Loading pipeline; 32. Unloading pipeline;
[0034] 4. Processing module; 41. Housing; 411. Flue gas inlet; 412. Flue gas outlet; 42. Desulfurization mechanism; 421. Desulfurizing agent layer; 422. First fixed housing; 43. Denitrification mechanism; 431. Denitrification agent layer; 432. Second fixed housing. Detailed Implementation
[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0036] In the description of this utility model, it should be noted that if terms such as "upper", "lower", "inner", "back" or indicating orientation or positional relationship appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.
[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0039] Please refer to the following: Figures 1 to 3 The modular fixed-bed desulfurization and denitrification treatment device provided by this utility model is described below. This modular fixed-bed desulfurization and denitrification treatment device includes an inlet pipe 1, an outlet pipe 2, a loading and unloading assembly 3, and a treatment module 4. The loading and unloading assembly 3 includes a loading pipe 31 and a unloading pipe 32. The loading pipe 31 includes a desulfurizing agent loading pipe and a denitrifying agent loading pipe, and the unloading pipe 32 includes a desulfurizing agent unloading pipe and a denitrifying agent unloading pipe. The treatment module 4 includes a housing 41 and a desulfurization mechanism 42 and a denitrification mechanism 43 disposed within the housing 41. The housing 41 has a flue gas inlet 411 and a flue gas outlet 412. The flue gas inlet 411 is connected to the inlet pipe 1, and the flue gas outlet 412 is connected to the outlet pipe 2. The desulfurization mechanism 43... 2 includes a desulfurizing agent layer 421 and a first fixed shell 422. The denitrification mechanism 43 includes a denitrification agent layer 431 and a second fixed shell 432. The desulfurizing agent layer 421 and the denitrification agent layer 431 are both disposed inside the shell 41. The thickness direction of the desulfurizing agent layer 421 and the thickness direction of the denitrification agent layer 431 are both perpendicular to the flue gas flow direction. The top of the first fixed shell 422 is connected to the desulfurizing agent feeding pipe, and the bottom of the first fixed shell 422 is provided with a first discharge valve connected to the desulfurizing agent discharging pipe. The top of the second fixed shell 432 is connected to the denitrification agent feeding pipe, and the bottom of the second fixed shell 432 is provided with a second discharge valve connected to the desulfurizing agent discharging pipe.
[0040] Compared to existing technologies, this embodiment, by setting up independent desulfurizing agent layer 421 and denitrifying agent layer 431, allows the flue gas to fully contact the desulfurizing and denitrifying agents during the flow process, thereby improving reaction efficiency. Combined with the modularly designed processing module 4, the desulfurization and denitrification units can be installed and replaced independently relative to the flue gas conveying pipeline, solving the bulky problem caused by the integrated structure of traditional devices. The loading and unloading assembly 3, by separating the desulfurization / denitrification agent pipelines, achieves separate management and cyclic replenishment of the two catalysts, reducing maintenance costs and achieving flexible configuration and efficient purification. When flue gas needs treatment, the processing module 4 can be directly connected to the inlet and outlet flue gas pipelines 2. The number of processing modules 4 can be flexibly set according to the flue gas processing volume, thus solving the technical problems of existing desulfurization and denitrification equipment being inconvenient to expand and standardize for mass production.
[0041] In addition to the above embodiments, in a feasible implementation, the first fixed shell 422 includes a first louver and a second louver evenly disposed within the shell 41. The thickness direction of the first louver and the second louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the first louver and the second louver gradually decreases. A desulfurization space for filling the desulfurizing agent layer 421 is formed between the first louver and the second louver. The second fixed shell 432 includes a third louver and a fourth louver evenly disposed within the shell 41. The thickness direction of the third louver and the fourth louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the third louver and the fourth louver gradually decreases. A denitrification space for filling the denitrification agent layer 431 is formed between the third louver and the fourth louver. With this configuration, the louver structure can reduce pressure drop loss and enhance the stability of system operation while fixing the catalyst, allowing the flue gas to pass through the reaction layer evenly, thus solving the technical problems of easy clogging and uneven airflow distribution in traditional fixed beds.
[0042] More specifically, the casing 41 has a flue gas inlet chamber, a flue gas upward displacement chamber, and a flue gas outlet chamber. A transverse partition is provided inside the casing 41, with ventilation holes located in the flue gas upward displacement chamber. A flue gas inlet 411 is located at the bottom of the casing 41 below the partition, and a flue gas outlet 412 is located at the top of the casing 41 above the partition. Along the direction away from the flue gas inlet 411, a desulfurizing agent layer 421 and a denitrifying agent layer 431 are sequentially arranged inside the casing 41. The flue gas upward displacement chamber is formed by the denitrifying agent layer 431 and the sidewalls of the casing 41. The flue gas flows sequentially from the flue gas inlet 411 through the flue gas inlet chamber along its own movement path. The flue gas flows out from the flue gas outlet 412 through the cavity, the desulfurizing agent layer 421 below the diaphragm, the denitrifying agent layer 431 below the diaphragm, and the flue gas upward displacement cavity. The diaphragm and the cavity structure (flue gas inlet cavity, flue gas upward displacement cavity, flue gas outlet cavity), in conjunction with the sequential arrangement of the desulfurizing agent layer 421 and the denitrifying agent layer 431, force the flue gas to pass through the two-stage treatment areas in sequence, achieving stepwise and efficient removal of sulfur and nitrate. The added diaphragm and the ventilation holes opened in the diaphragm can be adapted to the automatic upward movement path of the high-temperature flue gas, optimizing the upward path of the flue gas, avoiding turbulence interference, forming secondary desulfurization and denitrification, thereby helping to improve the overall purification efficiency.
[0043] In addition to the feasible implementation methods described above, another more preferred implementation method is proposed. Specifically, the flue gas inlet pipe 1 includes a main flue gas inlet pipe 11 and multiple branch flue gas inlet pipes 12 all connected to the main flue gas inlet pipe 11. The exhaust pipe 2 includes a main exhaust pipe 21 and multiple branch exhaust pipes 22 all connected to the main exhaust pipe 21. There are multiple processing modules 4. Each branch flue gas inlet pipe 12 is connected to the flue gas inlet 411 on each housing 41, and each branch exhaust pipe 22 is connected to the exhaust pipe 22 on each housing 41. Furthermore, the denitrification agent feeding pipe includes a first feeding main pipe and multiple first feeding branch pipes all connected to the first feeding main pipe. The outlet of each first feeding branch pipe corresponds to the desulfurization space in each housing 41. The desulfurization agent feeding pipe includes a second feeding main pipe and multiple second feeding branch pipes all connected to the second feeding main pipe. The outlet of each second feeding branch pipe corresponds to the desulfurization space in each housing 41. Meanwhile, the modular fixed-bed desulfurization and denitrification treatment device also includes a fixed support, on which the flue gas inlet pipe 1, flue gas outlet pipe 2, loading and unloading assembly 3, and each treatment module 4 are all mounted. In this way, the above embodiment can integrate multiple treatment modules 4 in parallel to form a scalable modular system through the distributed layout of the main flue gas inlet pipe 11 and branch pipes, the main flue gas outlet pipe 21 and branch pipes, and the branch structure of the desulfurization / denitrification agent loading pipe. This design solves the problem of limited capacity of a single treatment unit, supports flexible addition or reduction of the number of modules according to the flue gas volume, and enables independent control and maintenance of each module, significantly improving production adaptability and equipment utilization. Furthermore, the introduction of the fixed support integrates the pipes, treatment modules 4, and other components onto a unified support structure, enhancing the overall integrity and transportation convenience of the device, solving the problems of complex modular system assembly and low on-site installation efficiency, and providing a standardized basis for industrial mass production.
[0044] In one feasible implementation, a first hopper is provided between the bottom of the first fixed shell 422 and the first discharge valve, and a second hopper is provided between the bottom of the second fixed shell 432 and the second discharge valve, so as to form a controllable discharge buffer space in conjunction with the discharge valve. This can prevent the catalyst from directly impacting the valve and causing wear, while ensuring the continuity and sealing of the discharge process, thus solving the technical problems of easy leakage and low efficiency when replacing catalyst in traditional fixed beds.
[0045] Based on the same inventive concept, this utility model also proposes a flue gas treatment device, which includes the modular fixed bed desulfurization and denitrification treatment device mentioned above.
[0046] Compared with the prior art, the flue gas treatment equipment of this utility model has all the advantages of the above-mentioned modular fixed bed desulfurization and denitrification treatment device. In addition, by integrating the above-mentioned modular fixed bed desulfurization and denitrification treatment device, the flue gas treatment equipment of this utility model has the advantages of high efficiency purification, flexible expansion and easy maintenance, and is suitable for industrial scenarios of different scales. It solves the technical pain points of poor adaptability and high operation and maintenance costs caused by the rigid structure of traditional equipment.
[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular fixed-bed desulfurization and denitrification treatment device, characterized in that, include: Smoke inlet duct; Smoke exhaust duct; The loading and unloading assembly includes a loading pipeline and a unloading pipeline. The loading pipeline includes a desulfurizing agent loading pipeline and a denitrifying agent loading pipeline, and the unloading pipeline includes a desulfurizing agent unloading pipeline and a denitrifying agent unloading pipeline. The processing module includes a housing and a desulfurization mechanism and a denitrification mechanism disposed within the housing. The housing has a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to the flue gas inlet pipe, and the flue gas outlet is connected to the flue gas outlet pipe. The desulfurization mechanism includes a desulfurizing agent layer and a first fixed shell. The denitrification mechanism includes a denitrification agent layer and a second fixed shell. Both the desulfurizing agent layer and the denitrification agent layer are disposed within the housing, and the thickness directions of the desulfurizing agent layer and the denitrification agent layer are perpendicular to the flue gas flow direction. The top of the first fixed shell is connected to the desulfurizing agent feeding pipe, and the bottom of the first fixed shell is provided with a first discharge valve connected to the desulfurizing agent discharging pipe. The top of the second fixed shell is connected to the denitrification agent feeding pipe, and the bottom of the second fixed shell is provided with a second discharge valve connected to the desulfurizing agent discharging pipe.
2. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 1, characterized in that, The first fixed shell includes a first louver and a second louver, both disposed within the shell. The thickness direction of the first louver and the second louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the first louver and the second louver gradually decreases. A desulfurization space for filling the desulfurizing agent layer is formed between the first louver and the second louver. The second fixed shell includes a third louver and a fourth louver, both disposed within the shell. The thickness direction of the third louver and the fourth louver is perpendicular to the flue gas flow direction. From top to bottom, the spacing between the blades of the same height in the third louver and the fourth louver gradually decreases. A denitrification space for filling the denitrification agent layer is formed between the third louver and the fourth louver.
3. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 1, characterized in that, The housing has a flue gas inlet chamber, a flue gas upward displacement chamber, and a flue gas outlet chamber. A horizontal partition is provided inside the housing. The horizontal partition has a vent hole at the part of the flue gas upward displacement chamber. The flue gas inlet is located at the bottom of the housing and below the horizontal partition. The flue gas outlet is located at the top of the housing and above the horizontal partition. Along the direction away from the flue gas inlet, a desulfurizing agent layer and a denitrifying agent layer are arranged sequentially inside the housing. The flue gas upward displacement chamber is formed by the denitrifying agent layer and the side wall of the housing. The flue gas flows along its own movement path from the flue gas inlet through the flue gas inlet chamber, the desulfurizing agent layer below the horizontal partition, the denitrifying agent layer below the horizontal partition, and the flue gas upward displacement chamber, and flows out from the flue gas outlet.
4. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 1, characterized in that, The smoke inlet pipeline includes a main smoke inlet pipeline and multiple branch smoke inlet pipelines, each connected to the main smoke inlet pipeline. The smoke exhaust pipeline includes a main smoke exhaust pipeline and multiple branch smoke exhaust pipelines, each connected to the main smoke exhaust pipeline. There are multiple processing modules. Each branch smoke inlet pipeline is connected to a flue gas inlet on each of the housings, and each branch smoke exhaust pipeline is connected to a branch smoke exhaust pipeline on each of the housings.
5. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 4, characterized in that, The denitrification agent feeding pipe includes a first feeding main pipe and a plurality of first feeding branch pipes that are all connected to the first feeding main pipe. The outlet of each first feeding branch pipe corresponds to the desulfurization space in each of the shells. The desulfurizing agent feeding pipe includes a second feeding main pipe and a plurality of second feeding branch pipes, each connected to the second feeding main pipe. The outlet of each second feeding branch pipe corresponds to the desulfurization space in each of the shells.
6. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 5, characterized in that, The modular fixed-bed desulfurization and denitrification treatment device also includes a fixed support, on which the flue gas inlet pipe, the flue gas outlet pipe, the loading and unloading assembly and each of the treatment modules are located.
7. The modular fixed-bed desulfurization and denitrification treatment device as described in claim 1, characterized in that, A first hopper is provided between the bottom of the first fixed shell and the first discharge valve, and a second hopper is provided between the bottom of the second fixed shell and the second discharge valve.
8. A flue gas treatment device, characterized in that, It includes a modular fixed-bed desulfurization and denitrification treatment device as described in any one of claims 1 to 7.