CN218553676U

CN218553676U - Pressure loss inhibition type tail gas purification and denitration device for biogas generator set

Info

Publication number: CN218553676U
Application number: CN202222455656.5U
Authority: CN
Inventors: 杨松力; 吴俊杰; 陈祖岳; 赵逸勋; 卢耀耀; 占建荷; 吴建芬
Original assignee: Hangzhou Tianziling Power Generation Co ltd
Current assignee: Hangzhou Tianziling Power Generation Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-03-03
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses a restrain pressure loss type biogas generating set tail gas purification denitrification facility, container type biogas generating set's exhaust emission pipeline intercommunication has vertical flaring type purification denitrifier, vertical flaring type purification denitrifier includes the import flue, flaring type purification denitrifier body and export flue, flaring type purification denitrifier body includes flaring frustum casing, square tube casing and throat frustum casing, the inside toper divertor that sets up of flaring frustum casing, the inside interval of square tube casing sets up rectification grid and rectangle catalyst module, a plurality of flat catalyst module of triangle-shaped and zigzag catalyst module looks gomphosis form rectangle catalyst module, a plurality of V-arrangement honeycomb catalyst layer group dock side by side and form zigzag catalyst module. The device is difficult for appearing the sinuous flow at the exhaust purification denitration treatment in-process, effectively slows down exhaust flow velocity, keeps exhaust flow velocity homogeneous, effectively suppresses the pressure loss increase, helps improving purification denitration efficiency.

Description

Pressure loss inhibition type tail gas purification and denitration device for biogas generator set

Technical Field

The utility model relates to a biogas power generation technical field, in particular to restrain pressure loss type biogas generating set tail gas purification denitrification facility.

Background

The biogas power plant is an enterprise for collecting landfill gas of a household garbage landfill and kitchen waste fermentation gas to generate power. Along with the dilatation demand of engineering, the plant planning design is rationally carried out, on the basis of the factory building type generator set of the existing fixed building, a container type biogas generator set is built to meet the increasing biogas power generation dilatation demand, and along with this, the tail gas purification denitration and emission problems of the container type biogas generator set are one of the main research topics facing at present, in the existing tail gas purification denitration treatment process, the tail gas in the purification denitration device is easy to appear the turbulence, the tail gas flow velocity is not uniform, the pressure loss is large, the purification denitration treatment efficiency is reduced, and the normal production order of biogas power generation is influenced.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, the technical problem that solve provides an restrain pressure loss type biogas generating set exhaust purification denitrification facility, in container type biogas generating set's exhaust purification denitration treatment process, the indiscriminate flow is difficult for appearing, effectively slows down exhaust flow velocity, keeps exhaust flow velocity homogeneous, effectively restrains the pressure loss increase, help improving purification denitration efficiency, be favorable to maintaining the normal production order of long period biogas power generation.

The present application solves the above-mentioned problems by the following technical solutions.

The tail gas exhaust pipeline of the container type biogas generator set is communicated with a vertical flaring type purification denitrator, the vertical flaring type purification denitrator comprises an inlet flue, a flaring type purification denitrator body and an outlet flue, the flaring type purification denitrator body comprises a flaring frustum shell, a square barrel shell and a necking frustum shell which are sequentially butted from an air inlet end to an air outlet end, a conical fluid director is arranged inside the flaring frustum shell, a rectifying grid and rectangular catalyst modules are sequentially arranged inside the square barrel shell at intervals along the flow direction of flue gas, a plurality of triangular flat plate type catalyst modules and sawtooth type catalyst modules are embedded to form the rectangular catalyst modules, and a plurality of V-shaped honeycomb type catalyst modules are butted side by side to form the sawtooth type catalyst modules.

Preferably, the V-shaped included angle of the V-shaped honeycomb catalyst layer group is an acute angle.

Preferably, the conical fluid director is a structure formed by sleeving a plurality of conical tubes coaxially and at intervals.

Preferably, the distance between the conical flow deflector and the rectifying grid is greater than the distance between the finishing grid and the rectangular catalyst module.

Preferably, the distance between the conical flow deflector and the rectifying grid is one tenth to one quarter of the length of the square cylinder shell.

Preferably, the distance between the rectifying grating and the rectangular catalyst module is one twentieth to one fifth of the length of the square cylinder shell.

Preferably, the container type methane generator set is an open screw expander generator set.

Preferably, the triangular flat-plate catalyst module adopts a stainless steel pore plate which is coated with a titanium dioxide carrier and the surface of which is loaded with a platinum catalyst.

Preferably, the inlet flue, the flaring purification denitrator body and the outlet flue are of stainless steel structures.

Preferably, the outlet flue is sequentially butted with a stainless steel corrugated pipe, a smoke silencer and an exhaust chimney.

The beneficial effect of this application:

optimize flaring type purification denitrator body structure and be flaring frustum casing, square tube casing and throat frustum casing, increase the toper divertor at flaring frustum casing inside, disperse the water conservancy diversion in advance to the tail gas that comes from the exhaust emission pipeline for tail gas flow velocity is more even, effectively avoids taking place indiscriminate flow phenomenon, and rethread rectification grid rectifies the back, further adjusts the tail gas flow direction, is of value to the homogeneity that improves tail gas flow velocity and distributes. Adopt the triangle-shaped flat catalyst module of rectangle catalyst module for optimal design and zigzag catalyst module looks gomphosis structure, the air inlet department of rectangle catalyst module is the planar structure of triangle-shaped flat catalyst module, be favorable to improving the homogeneity of tail gas flow velocity distribution, it is homogeneous to keep tail gas flow velocity, and triangle-shaped flat catalyst module helps slowing down tail gas flow velocity, it increases to restrain the pressure loss, the effective area under the zigzag catalyst module unit volume is bigger, save the catalyst quantity, the flue gas treatment flow is bigger, be favorable to improving denitration efficiency, prolong the catalyst life-span, energy-concerving and environment-protective, be favorable to maintaining long period biogas power generation normal production order.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

FIG. 1 is a perspective schematic view of an embodiment of the present application;

fig. 2 isbase:Sub>A schematic sectional view taken along the directionbase:Sub>A-base:Sub>A in fig. 1.

In the figure: the device comprises a vertical flaring type purification denitrator, a 2-inlet flue, a 3-flaring type purification denitrator body, a 4-outlet flue, a 5-flaring frustum shell, a 6-square barrel shell, a 7-necking frustum shell, an 8-conical fluid director, a 9-rectifying grid, a 10-rectangular catalyst module, a 11-triangular flat plate type catalyst module, a 12-sawtooth type catalyst module and a 13-V-shaped honeycomb type catalyst layer group.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

Referring to fig. 1 and 2, in the tail gas purification and denitration device for a pressure loss suppression type biogas generator set according to the embodiment of the present application, a tail gas discharge pipeline of a container type biogas generator set is communicated with a vertical flared purification and denitration device 1, and the container type biogas generator set is an open screw expander generator set. Vertical flaring type purifies denitrator 1 includes import flue 2, flaring type purifies denitrator body 3 and export flue 4, import flue 2 flaring type purifies denitrator body 3 with export flue 4 is stainless steel texture. The outlet flue 4 is in butt joint with a stainless steel corrugated pipe, a smoke silencer and an exhaust chimney (not shown in the figure) in sequence. The flaring type purification denitrator body 3 comprises a flaring frustum shell 5, a square barrel shell 6 and a necking frustum shell 7 which are sequentially butted from an air inlet end to an air outlet end. The flaring frustum shell 5 is internally provided with a conical fluid director 8, and specifically, the conical fluid director 8 is a structure formed by sleeving a plurality of conical bobbins coaxially and at intervals. The square tube shell 6 is internally provided with a rectification grid 9 and a rectangular catalyst module 10 at intervals in sequence along the flue gas flow direction, specifically speaking, the interval distance between the conical fluid director 8 and the rectification grid 9 is greater than the interval distance between the arrangement grid 9 and the rectangular catalyst module 10, and further, the interval distance between the conical fluid director 8 and the rectification grid 9 is one tenth to one quarter of the length of the square tube shell 6. The distance between the rectifying grating 9 and the rectangular catalyst module 10 is one twentieth to one fifth of the length of the square cylinder shell 6. The triangular flat plate catalyst modules 11 and the zigzag catalyst modules 12 are embedded to form the rectangular catalyst module 10. Specifically, the triangular flat plate catalyst module 11 is a stainless steel pore plate coated with a titanium dioxide carrier and having a platinum catalyst supported on the surface. A plurality of V-shaped honeycomb catalyst layer groups 13 are butted side by side to form the zigzag catalyst module 12, and further, a V-shaped included angle of the V-shaped honeycomb catalyst layer group 12 is an acute angle.

The above description is only a part of the embodiments and implementations of the present invention, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. Restrain pressure loss type marsh gas generating set tail gas clean-up denitrification facility, characterized by: the tail gas discharge pipeline of the container type biogas generator set is communicated with a vertical flaring type purification denitrator (1), the vertical flaring type purification denitrator (1) comprises an inlet flue (2), a flaring type purification denitrator body (3) and an outlet flue (4), the flaring type purification denitrator body (3) comprises a flaring frustum shell (5), a square tube shell (6) and a necking frustum shell (7) which are sequentially butted from an air inlet end to an air outlet end, a conical fluid director (8) is arranged inside the flaring frustum shell (5), a rectifying grating (9) and a rectangular catalyst module (10) are sequentially arranged inside the square tube shell (6) at intervals along the flow direction of flue gas, a plurality of triangular flat plate type catalyst modules (11) and a plurality of zigzag catalyst modules (12) are embedded to form the rectangular catalyst module (10), and a plurality of V-shaped honeycomb catalyst layer groups (13) are butted side by side to form the zigzag catalyst modules (12).

2. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the V-shaped included angle of the V-shaped honeycomb catalyst layer group (13) is an acute angle.

3. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the conical fluid director (8) is a structure formed by sleeving a plurality of conical bobbins at intervals coaxially.

4. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the spacing distance between the conical fluid director (8) and the rectifying grid (9) is greater than the spacing distance between the rectifying grid (9) and the rectangular catalyst module (10).

5. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the interval distance between the conical flow guider (8) and the rectifying grating (9) is one tenth to one fourth of the length of the square cylinder shell (6).

6. The tail gas purification and denitration device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the interval distance between the rectifying grating (9) and the rectangular catalyst module (10) is one twentieth to one fifth of the length of the square barrel shell (6).

7. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the container type biogas generator set is an open type screw expander generator set.

8. The tail gas purification and denitration device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the triangular flat plate type catalyst module (11) adopts a stainless steel pore plate coated with a titanium dioxide carrier and loaded with a platinum catalyst on the surface.

9. The tail gas purifying and denitrifying device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the inlet flue (2), the flaring type purification denitrator body (3) and the outlet flue (4) are of stainless steel material structures.

10. The tail gas purification and denitration device for the pressure loss inhibition type biogas generator set according to claim 1, which is characterized in that: the outlet flue (4) is sequentially butted with a stainless steel corrugated pipe, a smoke silencer and an exhaust chimney.