Desulfurization, dust removal and denitration integrated equipment
The integrated desulfurization, dust removal, and denitrification equipment solves the problems of large footprint, high investment, and high energy consumption caused by independent equipment in existing technologies. It achieves compact and efficient flue gas treatment, improves space utilization and denitrification efficiency, and reduces operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING BAOTA SANJU ENERGY SCI & TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-26
AI Technical Summary
In existing flue gas treatment equipment, desulfurization, denitrification and dust removal devices are set up independently, which occupy a large area, have high investment, low space utilization, and complex connections between devices, increasing steel consumption and operating energy consumption.
Design an integrated desulfurization, dust removal, and denitrification equipment. The equipment is divided into upper, middle, and lower layers by a supporting and partitioning structure, and further divided into a middle area and an outer area in the horizontal direction. It integrates a denitrification chamber, a desulfurization filtration chamber, and an exhaust port. The flue gas flows from bottom to top and is directly connected to the desulfurization filtration chamber and the denitrification chamber, reducing the number of connecting pipelines between equipment. Modularly designed dust collector bags and catalyst modules are adopted.
The integrated design of the equipment saves floor space and investment, improves space utilization, reduces inlet and outlet pressure difference and flue gas temperature drop, improves denitrification efficiency, reduces steel usage and operating energy consumption, and simplifies maintenance and processing.
Smart Images
Figure CN224404647U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue gas treatment in the air pollution control industry, specifically to an integrated desulfurization, dust removal, and denitrification equipment. Background Technology
[0002] Flue gas treatment mainly includes desulfurization, denitrification, and dust removal processes. These three process units are often independent of each other, arranged separately, and connected by flue gas ducts.
[0003] Currently, the most commonly used dust removal equipment is the baghouse dust collector, which occupies a large area. Three separate units require an even larger area, resulting in low space utilization, high steel consumption, and significant investment. This is especially problematic for existing factories adding new flue gas purification devices, which often lack sufficient space. Utility Model Content
[0004] I. Technical problems to be solved
[0005] This invention aims to solve at least partially one of the aforementioned technical problems.
[0006] II. Technical Solution
[0007] This utility model provides an integrated desulfurization, dust removal, and denitrification device. The integrated desulfurization, dust removal, and denitrification device includes: a supporting and partitioning structure that vertically divides the device into upper, middle, and lower layers; and horizontally into a middle area and an outer area; a denitrification chamber located in the middle area of the middle layer; an exhaust port located in the middle area of the middle layer, below the denitrification chamber; an air inlet located in the middle area of the lower layer, below the exhaust port; and N desulfurization filter chambers arranged symmetrically. Located in the middle outer area of the integrated desulfurization, dust removal, and denitrification equipment, around the denitrification chamber and exhaust port, where N≥2 and N is an even number; S ash hoppers are located in the lower outer area of the integrated desulfurization, dust removal, and denitrification equipment. For each ash hopper, its upstream side is connected to the air inlet through an air inlet branch pipe, and its downstream side is connected upward to the desulfurization filter chamber, where S≥2 and S is an even number; the upper air chamber is located in the upper area of the integrated desulfurization, dust removal, and denitrification equipment, connecting the N desulfurization filter chambers in the outer area and the denitrification chamber in the middle area.
[0008] In some embodiments of this utility model, the flue gas mixed with desulfurizing agent enters from the air inlet, diffuses outward through the air inlet branch pipe into S ash hoppers, then enters upward into N desulfurization filter chambers, and then enters the denitrification chamber in the middle area through the upper chamber at the top of the desulfurization filter chamber, and finally exits through the exhaust port.
[0009] In some embodiments of this utility model, S ash hoppers are symmetrically arranged around the air inlet, where S = N, and each desulfurization filter chamber corresponds to one ash hopper; or, n × S = N, and n desulfurization filter chambers correspond to the same ash hopper, where n is an integer and n ≥ 2.
[0010] In some embodiments of this utility model, an air inlet valve is provided on the air inlet branch pipe between the air inlet and the ash hopper; and / or, a lift valve is provided between the upper air chamber and the denitrification chamber.
[0011] In some embodiments of this utility model, a rain shelter is also included, disposed above the supporting partition structure and covering the lifting valve.
[0012] In some embodiments of this utility model, S is selected from: 2, 4, 6, 8, 10, 16, 20, 30; S ash hoppers are symmetrically arranged around the denitrification chamber and the exhaust port.
[0013] In some embodiments of this utility model, the denitrification chamber is provided with M layers of catalyst support frame along the vertical direction, where M≥2; each layer of catalyst support frame is provided with a denitrification catalyst module.
[0014] In some embodiments of this utility model, each desulfurization filter chamber is provided with T dust collector bags, where T≥2; the outer side of the dust collector bags is connected to the ash hopper; the inner side of the dust collector bags is connected upward to the upper chamber; and the upper chamber above the dust collector bags is provided with a jet cleaning system.
[0015] In some embodiments of this utility model, the supporting partition structure includes: a steel bracket and a wall panel.
[0016] In some embodiments of this utility model, the beams and columns are steel columns, and the wall panels are steel plates.
[0017] III. Beneficial Effects
[0018] As can be seen from the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art:
[0019] (1) Integrated design, small footprint, saving investment.
[0020] (2) The integrated design makes the structure compact, the airflow smooth, the inlet and outlet pressure difference small, and the flue gas temperature drop small, which helps to improve the denitrification efficiency.
[0021] (3) Replace the third-level equipment with the first-level equipment to reduce the expansion asynchrony between the equipment by setting up compensators.
[0022] (4) The air inlet is located at the bottom of the steel frame, making full use of the lower space.
[0023] (5) The desulfurization, dust removal and denitrification integrated equipment has a denitrification chamber in the flue gas chamber between two dust collectors. The desulfurization filtration chamber and the denitrification chamber share the same wall panels and beams and columns, which saves steel and space.
[0024] (6) The filter bag chamber can both desulfurize and filter. The filter bag and its dust layer can both increase the desulfurization efficiency and intercept and filter dust.
[0025] (7) The dust removal and denitrification chambers are directly connected by a lift valve, without any connecting pipeline between the two equipment, which saves steel, reduces flue gas resistance, and saves operating energy consumption.
[0026] (8) The desulfurization filter chamber adopts a modular design, which makes it easy to replace the dust collector bags online. It has a high degree of operational flexibility and is easy to process and manufacture, thereby improving work efficiency and reducing processing costs. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the integrated desulfurization, dust removal, and denitrification equipment according to an embodiment of the present invention. Detailed Implementation
[0028] This utility model provides an integrated desulfurization, dust removal and denitrification equipment, which has the advantages of high space utilization, small footprint, low investment and low energy consumption.
[0029] To more clearly illustrate the purpose, technical solution, and advantages of this utility model, the following detailed description will be provided in conjunction with specific embodiments and with reference to the accompanying drawings.
[0030] This utility model provides an integrated desulfurization, dust removal, and denitrification equipment. Figure 1 This is a schematic diagram of the integrated desulfurization, dust removal, and denitrification equipment according to an embodiment of this utility model. Figure 1 As shown, the integrated desulfurization, dust removal, and denitrification equipment in this embodiment includes:
[0031] The supporting partition structure divides the integrated desulfurization, dust removal and denitrification equipment into three layers (upper, middle and lower) in the vertical direction; and into a middle area and an outer area in the horizontal direction.
[0032] The denitrification chamber 20 is located in the middle area of the middle layer of the integrated desulfurization, dust removal and denitrification equipment;
[0033] The exhaust port 30 is located in the middle area of the middle layer of the integrated desulfurization, dust removal and denitrification equipment, below the denitrification chamber;
[0034] The air inlet 40 is located in the lower middle area of the integrated desulfurization, dust removal and denitrification equipment, below the exhaust port;
[0035] Two desulfurization filter chambers 50 are symmetrically arranged in the middle outer area of the integrated desulfurization, dust removal and denitrification equipment, around the denitrification chamber and the exhaust port;
[0036] Two ash hoppers 60 are set in the lower outer area of the integrated desulfurization, dust removal and denitrification equipment. For each ash hopper, the upstream side is connected to the air inlet through the air inlet branch pipe, and the downstream side is connected to the desulfurization filter chamber.
[0037] The upper chamber 70 is located in the upper area of the integrated desulfurization, dust removal and denitrification equipment, and connects the N desulfurization filter chambers in the outer area and the denitrification chamber in the middle area.
[0038] The following is a detailed description of each component of the integrated desulfurization, dust removal, and denitrification equipment in this embodiment.
[0039] In this embodiment, the supporting partition structure vertically divides the integrated desulfurization, dust removal, and denitrification equipment into three layers: upper, middle, and lower. The middle layer is designed to be taller than the upper and lower layers to ensure the rationality of the equipment structure. The supporting partition structure includes a steel bracket 11 and a wall panel 12. The wall panel 12 is made of steel plate. However, this invention is not limited to this. In other embodiments of this invention, other suitable materials can be used to fabricate the supporting partition structure, and the same invention can be achieved.
[0040] It is particularly noteworthy that the denitrification chamber is cleverly positioned within the flue gas cavity between the two dust collectors and the desulfurization filter chamber. By sharing wall panels and steel supports, not only is the use of steel reduced, but space is also effectively saved. Simultaneously, the integrated design of the equipment minimizes its footprint and saves investment. This integrated design results in a compact structure, smooth airflow, small inlet and outlet pressure difference, and minimal flue gas temperature drop, thereby improving denitrification efficiency. Furthermore, this invention replaces the three-stage equipment with a single-stage device, reducing the need for compensators required for asynchronous expansion between equipment stages.
[0041] Please refer to Figure 1 In this embodiment, the integrated desulfurization, dust removal, and denitrification equipment further includes a rainproof canopy 80, which is disposed above the supporting partition structure and covers the lifting valve. The rainproof canopy facilitates operation for personnel and also prevents corrosion and damage to the lifting valve 72.
[0042] In this embodiment, the air inlet 40 is moved from its position between the desulfurization and filtration chambers to the lower middle area, increasing the upper space to facilitate the installation of the denitrification chamber. This design effectively utilizes the natural upward flow of flue gas, optimizes space utilization, and facilitates the rational arrangement of each module.
[0043] In this embodiment, an ammonia injection device 41 is provided inside the air inlet 40. When the flue gas mixed with desulfurizing agent enters from the air inlet 40, the ammonia injection device 41 will inject ammonia.
[0044] Please refer to Figure 1 In this embodiment, the flue gas enters through the inlet and connects to the ash hopper 60 via the inlet manifold 42 and inlet valve 43. The desulfurization filter chamber 50 is equipped with dust collector bags 51. The upper chamber 70 is equipped with a pulse-jet system 71 and a lifting valve 72.
[0045] In this embodiment, two desulfurization filter chambers 50 are configured, symmetrically arranged on both sides of the denitrification chamber and the exhaust port. Of course, the design of this invention is not limited to this specific configuration. In other embodiments of this invention, the desulfurization filter chambers can be modularly designed according to the amount of flue gas and available space, and the number of desulfurization filter chambers on both sides or around the denitrification chamber should be symmetrically arranged.
[0046] In this embodiment, there should be at least two ash hoppers, and the number should be even. Preferably, S is selected from an even number: such as 2, 4, 6, 8, 10, 16, 20, 30, etc.; the S ash hoppers are symmetrically arranged around the denitrification chamber and the exhaust port.
[0047] In this embodiment, the number of ash hoppers is the same as the number of desulfurization filter chambers, meaning each desulfurization filter chamber corresponds to one ash hopper. This arrangement improves the modularity of the equipment and facilitates installation and maintenance.
[0048] However, this utility model is not limited thereto. In other embodiments of this utility model, multiple desulfurization filter chambers may correspond to the same ash hopper, i.e., n×S=N, where N is the number of desulfurization filter chambers, S is the number of ash hoppers, and n is an integer, n≥2. Such variations can also realize this utility model and are also within the protection scope of this utility model.
[0049] In this embodiment, each desulfurization filter chamber is equipped with T dust collector bags 51, where T ≥ 2; the outer side of the dust collector bags is connected to the ash hopper 60; the inner side of the dust collector bags is connected upwards to the upper air chamber 70. A pulse-jet cleaning system 71 is provided above the dust collector bags 51.
[0050] In this embodiment, the desulfurization filter chamber serves both desulfurization and filtration functions. The filter bags and their dust layer can both increase desulfurization efficiency and intercept and filter dust. The dust layer on the dust collector bags will increase with the extension of working time, which can increase the desulfurization and dust removal efficiency. However, once it reaches a certain thickness, the resistance will exceed the design requirements, and a portion of the dust layer must be removed by jet cleaning through a pulse-jet system.
[0051] It is worth noting that in this embodiment, the desulfurization filter chamber adopts a modular design. This design not only improves the flexibility and maintainability of the equipment but also facilitates online replacement of filter bags, thereby enhancing operational flexibility. Furthermore, the application of modular design significantly improves manufacturing efficiency and effectively reduces processing costs.
[0052] In this embodiment, the denitrification chamber 20 is arranged in the flue gas chamber between the two dust collectors, and is arranged in two layers. Each layer has a catalyst support beam, and the denitrification catalyst 21 is placed on the catalyst support beam. The support beam is connected to the middle box column on both sides.
[0053] Please refer to Figure 1 In this embodiment, the desulfurization filter chamber 50 and the denitrification chamber 20 are directly connected by the upper gas chamber 70 and the lifting valve 72, eliminating the need for connecting pipelines between the two devices. This saves on steel costs and reduces the flow resistance of flue gas, thereby reducing operating energy consumption.
[0054] The following describes the working process of the integrated desulfurization, dust removal, and denitrification equipment in this embodiment: During operation, desulfurizing agent is sprayed into the flue gas main pipe. After the flue gas containing dust and desulfurizing agent enters the ash hopper 60 through the air inlet 40, the cross-section suddenly expands. Under the action of gravity, the dense dust particles are deposited in the ash hopper. The small-sized desulfurizing agent and dust particles enter the desulfurization filter chamber 50. Through the combined effects of inertia, collision, sieving, interception, and electrostatics on the surface of the dust collector bag 51, the desulfurizing agent and flue gas can be fully contacted and mixed, and the dust can be settled on the outer surface of the dust collector bag to form a dust layer. The desulfurized and purified gas enters the upper chamber 70 and enters the denitrification chamber 20 through the lifting valve 72. After denitrification by the denitrification catalyst, the purified flue gas enters the exhaust port and is discharged by the induced draft fan.
[0055] This concludes the description of all embodiments of this utility model. Based on the above description, those skilled in the art should have a clear understanding of this utility model.
[0056] It should be noted that for some implementation methods, if they are not key contents of this utility model and are well known to those skilled in the art, they are not described in detail in the accompanying drawings or text due to space limitations. In such cases, relevant prior art can be referred to for understanding.
[0057] The directional terms used in this utility model, such as "center," "lateral," "longitudinal," "top," "bottom," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," indicate only the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplification, 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. Furthermore, throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Also, the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but only illustrate the content of embodiments of this utility model.
[0058] The terms "connected" and "linked" used in this utility model should be interpreted broadly unless otherwise explicitly specified and limited. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection of a portion of two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0059] The above specific embodiments have provided a detailed description of the purpose, technical means, and beneficial effects of this utility model. It should be understood that the above detailed description is intended to help those skilled in the art to better understand this utility model, rather than to limit its application scope. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An integrated desulfurization, dust removal, and denitrification equipment, characterized in that, include: The supporting partition structure divides the integrated desulfurization, dust removal and denitrification equipment into three layers in the vertical direction: upper, middle and lower. It is divided into a middle area and an outer area in the horizontal direction; The denitrification chamber is located in the middle area of the middle layer of the integrated desulfurization, dust removal and denitrification equipment; The exhaust port is located in the middle area of the middle layer of the integrated desulfurization, dust removal and denitrification equipment, below the denitrification chamber; The air inlet is located in the lower middle area of the integrated desulfurization, dust removal and denitrification equipment, below the exhaust outlet; N desulfurization filter chambers are symmetrically arranged in the middle outer area of the integrated desulfurization, dust removal and denitrification equipment, around the denitrification chamber and the exhaust port, where N≥2; S ash hoppers are located in the lower outer area of the integrated desulfurization, dust removal and denitrification equipment. For each ash hopper, its upstream side is connected to the air inlet through an air inlet branch pipe, and its downstream side is connected to the desulfurization filter chamber. Wherein, S≥2 and S is an even number. The upper chamber is located in the upper area of the integrated desulfurization, dust removal and denitrification equipment, and connects the N desulfurization filtration chambers in the outer area and the denitrification chamber in the middle area.
2. The integrated desulfurization, dust removal, and denitrification equipment according to claim 1, characterized in that, The flue gas mixed with desulfurizing agent enters through the inlet, diffuses outward through the inlet manifold into S ash hoppers, then enters N desulfurization filter chambers, and then enters the denitrification chamber in the middle area through the upper chamber at the top of the desulfurization filter chamber, and finally exits through the exhaust port.
3. The integrated desulfurization, dust removal, and denitrification equipment according to claim 2, characterized in that, S ash hoppers are symmetrically arranged around the air inlet, among which, S=N, each desulfurization filter chamber corresponds to one ash hopper; Alternatively, n×S=N, where n desulfurization filter chambers correspond to the same ash hopper, where n is an integer and n≥2.
4. The integrated desulfurization, dust removal, and denitrification equipment according to claim 2, characterized in that, An air intake valve is installed on the air intake branch pipe between the air inlet and the ash hopper. And / or, a lift valve is provided between the upper gas chamber and the denitrification chamber.
5. The integrated desulfurization, dust removal, and denitrification equipment according to claim 4, characterized in that, Also includes: A rain shelter is installed above the supporting partition structure and covers the lifting valve.
6. The integrated desulfurization, dust removal, and denitrification equipment according to claim 1, characterized in that, S is selected from: 2, 4, 6, 8, 10, 16, 20, 30; S ash hoppers are symmetrically arranged around the denitrification chamber and the exhaust port.
7. The integrated desulfurization, dust removal, and denitrification equipment according to claim 1, characterized in that, The denitrification chamber is provided with a catalyst support frame of M layers along the vertical direction, where M≥2; Each catalyst support frame is equipped with a denitrification catalyst module.
8. The integrated desulfurization, dust removal, and denitrification equipment according to claim 1, characterized in that, Each desulfurization filtration chamber is equipped with T dust collection bags, where T ≥ 2; The outer side of the dust collector bag is connected to the ash hopper; the inner side of the dust collector bag is connected upwards to the upper air chamber. The upper chamber above the dust collector bag is equipped with a jet cleaning system.
9. The integrated desulfurization, dust removal, and denitrification equipment according to any one of claims 1 to 8, characterized in that, The supporting partition structure includes: steel brackets and wall panels.
10. The integrated desulfurization, dust removal, and denitrification equipment according to claim 9, characterized in that, The wall panel is made of steel plate.