Tail gas purification and denitration device of container type biogas generator set
By employing a vertical flared-mouth denitrifier and a flat-plate catalyst layer with a specific flow direction design in the exhaust gas purification and denitrification device of the containerized biogas generator set, the problems of large space occupation and slow flow rate are solved, achieving efficient denitrification treatment and stable power generation.
Patent Information
- Application Number
- CN202423189447.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing containerized biogas generator set exhaust gas purification and denitrification devices suffer from large space occupation, high flue gas resistance, slow flow velocity, and small flow rate, which affect the purification and denitrification efficiency and make it difficult to guarantee long-term stable power generation.
It adopts a vertical flared-mouth purification and denitrification device, which has primary and secondary flat-plate catalyst layers inside. The catalyst layers have a wavy and Z-shaped staggered structure, and the flue gas flow direction is designed with a specific angle, replacing the traditional flat-plate and honeycomb catalyst layers and optimizing the catalyst composition structure.
It reduces flue gas resistance, increases flow rate and processing flow, increases contact area, improves denitrification efficiency, and ensures long-term stable power generation of containerized biogas generator sets.
Smart Images
Figure CN223602321U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of biogas power generation, in particular to a tail gas purification and denitration device for a container-type biogas generator set. BACKGROUND
[0002] As clean, environmentally friendly green energy, the large-scale development and utilization of renewable energy has become an important way to solve the problems of energy shortage, environmental pollution and greenhouse effect caused by fossil energy in the 21st century. The use of methane obtained by separation and purification of biogas to meet the energy needs of mankind is a main means for mankind to develop and utilize biogas. A biogas power plant is an enterprise that collects landfill gas from a domestic waste landfill site and fermentation gas from kitchen waste and kitchen waste to generate electricity. With the expansion demand of the project, reasonable planning and design of the plant area, on the basis of the existing fixed building plant-type generator set, a container-type biogas generator set is constructed to meet the increasing demand for biogas power generation expansion, and the tail gas purification and denitration and emission problems of the container-type biogas generator set are one of the main research topics currently faced. In the existing tail gas purification and denitration treatment process, the flat plate catalyst layer and the honeycomb catalyst layer are used, which occupies space, has large flue gas resistance, slow flow rate, the honeycomb catalyst layer is easy to cause turbulence, the flue gas treatment flow is small, and the purification and denitration treatment efficiency is greatly affected, which is not conducive to the long-period stable power generation of the container-type biogas generator set. CONTENT OF THE UTILITY MODEL
[0003] The application aims at the deficiencies of the prior art, and aims to provide a tail gas purification and denitration device for a container-type biogas generator set, which is applied to tail gas purification and denitration treatment of the container-type biogas generator set, has a more simple and compact overall structure, occupies less space, is not easy to cause turbulence, greatly reduces flue gas resistance, has a fast flow rate and a large treatment flow, helps to improve the purification and denitration efficiency, and ensures the long-period stable power generation of the container-type biogas generator set.
[0004] The application solves the above technical problems through the following technical scheme.
[0005] The tail gas purification and denitration device of the container type biogas generator set, a vertical flared type purification and denitration device is communicated with the tail gas discharge pipeline of the container type biogas generator set, the vertical flared type purification and denitration device comprises an inlet flue, a flared type purification and denitration device body and an outlet flue, a flue gas rectifier is arranged in the inlet flue, a primary flat plate type catalyst layer and a secondary flat plate type catalyst layer are arranged in the flared type purification and denitration device body along the flue gas flow direction, the primary flat plate type catalyst layer and the secondary flat plate type catalyst layer each comprise two groups of flat plate type catalyst groups arranged in parallel and a guide partition plate matched with the flat plate type catalyst groups for guiding the flue gas to flow, the flue gas flow direction of the primary flat plate type catalyst layer forms an angle of 30-75 degrees with the main flue gas flow direction of the flared type purification and denitration device body, the flue gas flow direction of the secondary flat plate type catalyst layer is opposite to that of the primary flat plate type catalyst layer, the flat plate type catalyst group comprises two to three box-shaped flat plate type catalyst units, the inside of the box body of the box-shaped flat plate type catalyst unit is a laminated structure of a plurality of catalyst layer plates, the catalyst layer plate is a corrugated plate structure and comprises a flat plate and a Z-shaped bent plate which are staggered and spliced into one body.
[0006] As preferred, the thickness of the catalyst layer plate is 0.3-1 mm.
[0007] As preferred, the catalyst layer plate is a stainless steel porous plate coated with a titanium dioxide carrier surface loaded platinum catalyst.
[0008] As preferred, the outlet flue is sequentially connected with a stainless steel corrugated pipe, a flue gas silencer and an exhaust chimney.
[0009] As preferred, the flue gas silencer is made of low alloy steel, and the flue gas silencer is provided with a drain.
[0010] As preferred, the inlet flue is communicated with a flue gas cooling system.
[0011] As preferred, the inlet flue, the flared type purification and denitration device body and the outlet flue are made of stainless steel.
[0012] As preferred, the container type biogas generator set is an open type screw expander generator set.
[0013] The beneficial effects of the present application are as follows:
[0014] 1. The flared type purification and denitration device body is adopted, two groups of flat plate type catalyst groups are adopted instead of the combination structure of flat plate type catalyst layers and honeycomb type catalyst layers, the box-shaped flat plate type catalyst unit greatly saves space, is beneficial to reducing flue gas resistance, improving flue gas flow rate, greatly improving denitration efficiency, and the flue gas treatment flow is larger, which is helpful for realizing purification discharge of flue gas, ensuring long-period stable power generation of the container type biogas generator set, and saving energy and protecting the environment.
[0015] 2. The structure of the two groups of flat plate catalyst groups is optimized, the flue gas flow direction of the primary flat plate catalyst layer forms an angle of 30-75 degrees with the flue gas main flow direction of the flared purification denitrator body, and the flue gas flow direction of the secondary flat plate catalyst layer is opposite to that of the primary flat plate catalyst layer, which helps to increase the contact area, delay the flue gas purification denitrification processing time, and improve the flue gas denitrification efficiency.
[0016] 3. The structure of the box-shaped flat plate catalyst unit is optimized, the catalyst layer plate is a wave-shaped plate body formed by interlaced splicing of flat plate bodies and Z-shaped bent plate bodies, which helps to improve the structural strength, prevent turbulence, increase the flue gas contact area and play a flow guiding role, improve the denitrification efficiency, and provide protection for the long-period stable power generation of the container-type biogas generator set. BRIEF DESCRIPTION OF DRAWINGS
[0017] The following drawings are intended to facilitate the description of the preferred embodiments and do not constitute a limitation on the scope of protection of the present application.
[0018] Figure 1 The structure of the present application is shown in the following schematic diagram;
[0019] Figure 2 The perspective structure of A in the middle is shown in the following schematic diagram; Figure 1
[0020] The structure of the box-shaped flat plate catalyst unit in the middle is shown in the following schematic diagram; Figure 3 Figure 2 The structure of the catalyst layer plate in the middle is shown in the following schematic diagram.
[0021] Figure 4 Figure 3 The structure of the catalyst layer plate in the middle is shown in the following schematic diagram.
[0022] In the figure: 1-Vertical flared purification denitrator, 2-Inlet flue, 3-Flared purification denitrator body, 4-Outlet flue, 5-Flue gas rectifier, 6-Primary flat plate catalyst layer, 7-Secondary flat plate catalyst layer, 8-Flat plate catalyst group, 9-Guide partition, 10-Box-shaped flat plate catalyst unit, 11-Catalyst layer plate, 12-Flat plate body, 13-Z-shaped bent plate body, 14-Stainless steel corrugated pipe, 15-Flue gas silencer, 16-Exhaust chimney. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.
[0024] As Figure 1 and Figure 2 As shown, the tail gas discharge pipeline of the container type biogas generator set of the embodiment of the application is communicated with a vertical flared type purification denitrator 1, and the container type biogas generator set is an open type screw expander generator set. The vertical flared type purification denitrator 1 comprises an inlet flue 2, a flared type purification denitrator body 3 and an outlet flue 4, and the outlet flue 4 is sequentially butt-jointed with a stainless steel corrugated pipe 14, a flue gas silencer 15 and an exhaust chimney 16. The flue gas silencer 15 is made of low alloy steel, and the flue gas silencer 15 is provided with a drain.
[0025] The inlet flue 2, the flared type purification denitrator body 3 and the outlet flue 4 are made of stainless steel structure. The inlet flue 2 is communicated with a flue gas cooling system. A flue gas rectifier 5 is arranged in the inlet flue 2, and a primary flat plate type catalyst layer 6 and a secondary flat plate type catalyst layer 7 are arranged in the flared type purification denitrator body 3 along the flue gas flow direction. The primary flat plate type catalyst layer 6 and the secondary flat plate type catalyst layer 7 each comprise two groups of flat plate type catalyst groups 8 arranged in parallel and a guide partition plate 9 matched with the flat plate type catalyst groups 8 for guiding the flue gas to flow. The flue gas flow direction of the primary flat plate type catalyst layer 6 forms an angle of 30 degrees to 75 degrees with the main flue gas flow direction of the flared type purification denitrator body 3, and the flue gas flow direction of the secondary flat plate type catalyst layer 7 is opposite to that of the primary flat plate type catalyst layer 6. The flat plate type catalyst group 8 comprises two to three box-shaped flat plate type catalyst units 10.
[0026] As shown in Figure 3 and Figure 4 As shown, the box body of the box-shaped flat plate type catalyst unit 10 is internally provided with a plurality of catalyst layer plates 11 in a stacked structure. The catalyst layer plate 11 is a corrugated plate structure and comprises a flat plate body 12 and a Z-shaped bent plate body 13 which are staggered and spliced into one body. The thickness of the catalyst layer plate 11 is 0.3mm to 1mm. The catalyst layer plate 11 is a stainless steel porous plate coated with a titanium dioxide carrier surface loaded with platinum catalyst.
[0027] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A containerized biogas generator set exhaust gas purification and denitrification device, characterized by: The tail gas exhaust pipeline of the container type biogas generator set is communicated with a vertical flared type purification denitrator (1), the vertical flared type purification denitrator (1) comprises an inlet flue (2), a flared type purification denitrator body (3) and an outlet flue (4), a flue gas rectifier (5) is arranged in the inlet flue (2), a primary flat plate type catalyst layer (6) and a secondary flat plate type catalyst layer (7) are arranged in the flared type purification denitrator body (3) along the flue gas flow direction, the primary flat plate type catalyst layer (6) and the secondary flat plate type catalyst layer (7) each comprise two groups of flat plate type catalyst groups (8) arranged in parallel and a guide partition (9) cooperating with the flat plate type catalyst groups (8) for guiding the flue gas to flow, the flue gas flow direction of the primary flat plate type catalyst layer (6) forms an angle of 30 degrees to 75 degrees with the main flue gas flow direction of the flared type purification denitrator body (3), the flue gas flow direction of the secondary flat plate type catalyst layer (7) is opposite to that of the primary flat plate type catalyst layer (6), the flat plate type catalyst group (8) comprises two to three box-shaped flat plate type catalyst units (10), the box body of the box-shaped flat plate type catalyst unit (10) is internally provided with a laminated structure of a plurality of catalyst layer plates (11), the catalyst layer plate (11) is a wave-shaped plate body structure and comprises a flat plate body (12) and a Z-shaped bent plate body (13) which are staggered and spliced into one body.
2. The container type biogas generator set tail gas purification and denitration device according to claim 1, characterized in that: The catalyst layer plate (11) has a thickness of 0.3mm to 1mm.
3. The container type biogas generator set tail gas purification and denitration device according to claim 1, characterized in that: The catalyst layer plate (11) is a stainless steel porous plate coated with a titanium dioxide carrier surface loaded platinum catalyst.
4. The exhaust gas purification and denitration apparatus for a container type biogas generator set according to claim 1, characterized in that: The outlet flue (4) is sequentially connected with a stainless steel corrugated pipe (14), a flue gas silencer (15) and an exhaust chimney (16).
5. The container type biogas generator set tail gas purification and denitration device according to claim 4, characterized in that: The flue gas silencer (15) is made of low alloy steel, and is provided with a drain port.
6. The container type biogas generator set tail gas purification and denitration device according to claim 1, characterized in that: The inlet flue (2) is communicated with a flue gas cooling system.
7. The container type biogas generator set tail gas purification and denitration device according to claim 1, characterized in that: The inlet flue (2), the flared type purification denitrator body (3) and the outlet flue (4) are made of stainless steel.
8. The container type biogas generator set tail gas purification and denitration device according to claim 1, characterized in that: The container type biogas generator set is an open type screw expander generator set.