CN221096640U - SCR system reaction device - Google Patents
SCR system reaction device Download PDFInfo
- Publication number
- CN221096640U CN221096640U CN202323363985.8U CN202323363985U CN221096640U CN 221096640 U CN221096640 U CN 221096640U CN 202323363985 U CN202323363985 U CN 202323363985U CN 221096640 U CN221096640 U CN 221096640U
- Authority
- CN
- China
- Prior art keywords
- shell
- reaction device
- scr system
- system reaction
- catalyst
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 239000003054 catalyst Substances 0.000 claims abstract description 51
- 239000004071 soot Substances 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses an SCR system reaction device which comprises a shell, wherein an air inlet and an air outlet are respectively arranged at two ends of the shell, a splitter plate is arranged in the shell and close to the air inlet, the number of the splitter plates is eight, the eight splitter plates are uniformly arranged at the air inlet, a plurality of rows of catalyst loaders for installing catalysts are uniformly distributed at one side of the splitter plate, an inner baffle plate and an outer baffle plate are arranged at two sides of each row of catalyst loaders, the inner baffle plate is welded in the shell, the outer baffle plate is in sliding connection with the interior of the shell, the inner baffle plate and the outer baffle plate are respectively arranged side by side in a fence structure, and a supporting plate is welded on the inner baffle plate and used for fixing the catalyst loaders.
Description
Technical Field
The utility model relates to the technical field of diesel engine tail gas treatment, in particular to an SCR system reaction device.
Background
The SCR reaction device is a device provided with a catalyst and is arranged on an exhaust pipe of the test bench, the main functions of the SCR reaction device are to catalyze the pyrolysis and hydrolysis of urea to form NH 3 and the rapid reduction reaction of NOx in exhaust gas to form harmless N 2 and H 2 O, and the SCR reaction device is used as a place where the reduction reaction of NOx in the exhaust gas occurs, is one of key parts of an SCR system, and directly influences the conversion efficiency of the NOx and the performance of the SCR system of the exhaust gas aftertreatment device.
The existing SCR reaction device cannot uniformly mix exhaust gas and a catalyst, so that reduction efficiency is low, exhaust gas is thrown away to reach the standard, and meanwhile, the whole device is poor in exhaust gas impact resistance, the inside of the device is easy to damage, and the stability of a catalytic reduction process is affected.
Disclosure of Invention
The utility model aims to overcome the existing defects, and provides the SCR system reaction device which can improve the space utilization rate, ensure the exhaust gas and the catalyst to be uniformly mixed, improve the internal strength of the device and effectively solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an SCR system reaction unit, includes the casing, the both ends of casing are provided with air inlet and gas vent respectively, the inside division board that is close to the air inlet end of casing, the quantity of division board is eight, and eight division boards evenly set up at the air inlet end, one side equipartition of division board has the multirow to be used for installing the catalyst loader of catalyst, and every row of catalyst loader's both sides all are provided with interior baffle and outer baffle, interior baffle welding is inside the casing, outer baffle and the inside sliding connection of casing, interior baffle and outer baffle are fence structure and arrange side by side respectively, the welding has the backup pad on the interior baffle for fixed catalyst loader.
As a preferable technical scheme of the utility model, the inside of the shell is symmetrically provided with the slide way, the slide way is in a dovetail groove shape, the end part of the outer baffle plate is in a hook-shaped structure, and the two ends of the outer baffle plate are slidably connected in the slide way.
As a preferable technical scheme of the utility model, the catalyst loader is arranged on each row of inner baffles in multiple layers.
As a preferable technical scheme of the utility model, the air inlet and the air outlet of the shell are symmetrical conical surfaces.
As a preferable technical scheme of the utility model, soot blowers are symmetrically arranged on one side of each row of catalyst loaders, the soot blowers are provided with nozzles corresponding to the positions and the number of the catalysts, and the nozzles are opposite to the center of the catalysts.
As a preferable technical scheme of the utility model, a connecting plate is arranged in the horizontal direction inside the shell, the soot blower is connected with the connecting plate through a bolt, a positioning pipe is arranged in the vertical direction inside the shell, and a positioning rod on the soot blower is matched with the positioning pipe.
As a preferable technical scheme of the utility model, a drain outlet is arranged at one side of the exhaust port end of the shell.
As a preferable technical scheme of the utility model, one side surface of the shell is connected with a disassembly cover plate through a screw, and a sealing gasket is arranged between the disassembly cover plate and the shell.
As a preferable technical scheme of the utility model, the shell consists of an outer shell and an inner shell, and aluminum silicate cotton is filled between the inner shell and the outer shell.
As a preferable technical scheme of the utility model, the inner shell and the outer shell are supported by an inclined bracket and a square pipe.
Compared with the prior art, the utility model has the beneficial effects that: this SCR system reaction unit compact structure, reasonable in design, convenient operation shunts the exhaust through being provided with the flow distribution plate at the air inlet end, weakens the impact force to the device inside, and at the inside multirow multilayer installation catalyst of device simultaneously, both can guarantee exhaust and catalyst misce bene, with the reasonable encapsulation of numerous catalyst monomers together and keep sufficient intensity again, improves shock resistance, guarantees the going on of catalytic reduction process stability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is a bottom view of FIG. 2;
fig. 5 is an enlarged view at B in fig. 4.
In the figure: the device comprises a shell body 1, an air inlet 2, an air outlet 3, an inner shell body 4, a splitter plate 5, a catalyst loader 6, a supporting plate 7, an inner baffle 8, an outer baffle 9, a slide way 10, a soot blower 11, a positioning pipe 12, a drain outlet 13, a disassembling and assembling cover plate 14, a screw 15, an inclined bracket 16, a square pipe 17 and a connecting plate 18.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a SCR system reaction unit, which comprises a housing, the casing comprises shell body 1 and inner shell body 4, shell body 1 adopts 3mm ordinary steel sheet to constitute, except that the interface of reserving adopts screw connection, all the other welded seals, inner shell body 4 adopts 3mm stainless steel sheet to constitute inner shell 18, except that the interface of reserving adopts screw connection, all the other welded seals, pack aluminum silicate cotton between inner shell body 4 and the shell body 1 and carry out thermal insulation and keep warm, support through inclined support 16 and square tube 17 between inner shell body 4 and the shell body 1, improve whole steadiness, the both ends of casing are provided with air inlet 2 and gas vent 3 respectively, the inside air inlet 2 end that is close to of casing is provided with splitter plate 5, the quantity of splitter plate 5 is eight, eight splitter plates 5 evenly set up at air inlet 2 end, carry out reasonable reposition of redundant personnel to the exhaust, guarantee exhaust and catalyst evenly mix reaction;
a plurality of rows of catalyst loaders 6 for installing catalysts are uniformly distributed on one side of the flow dividing plate 5, the catalyst loaders 6 are in a hierarchical structure, the catalyst loaders 6 are installed on each row of inner baffle plates 8 in a multi-layer mode, the layers are separated, the arrangement mode of the catalysts can be made into 4x4x1 or 5x6x2 (the number of transverse catalysts is multiplied by the number of longitudinal catalysts is multiplied by the number of catalyst layers) according to the exhaust requirements and the sizes of the catalysts, the inner baffle plates 8 and the outer baffle plates 9 are arranged on two sides of each row of the catalyst loaders 6, and the inner baffle plates 8 and the outer baffle plates 9 are respectively arranged side by side in a fence structure to firmly support the catalyst loaders 6;
The inner baffle plate 8 is welded inside the inner shell 4, the outer baffle plate 9 is in sliding connection with the inside of the inner shell 4, and the inner baffle plate 8 is welded with the support plate 7 for fixing the catalyst loader 6.
Further, the inside symmetry of inner shell 4 is provided with slide 10, and slide 10 is dovetail shape, and the tip of outer baffle 9 is hook structure, and the both ends sliding connection of outer baffle 9 can remove the dismouting in slide 10, the installation catalyst of being convenient for.
Furthermore, the air inlet 2 and the air outlet 3 of the shell are symmetrical conical surfaces, so that the exhaust gas can be conveniently and rapidly diffused and collected.
Further, soot blowers 11 are symmetrically arranged on one side of each row of catalyst loader 6, nozzles corresponding to the positions and the number of the catalysts are arranged on the soot blowers 11, the nozzles are opposite to the center of the catalysts, and attachments on the surfaces of the catalysts are regularly purged through the soot blowers 11, so that the influence on the catalytic reduction efficiency is avoided.
Further, a connecting plate 18 is arranged in the horizontal direction inside the shell, the soot blower 11 is connected with the connecting plate 18 through bolts, a positioning pipe 12 is arranged in the vertical direction inside the shell, and a positioning rod on the soot blower 11 is matched with the positioning pipe 12, so that the soot blower 11 can be installed quickly.
Further, a drain 13 is arranged on one side of the end of the exhaust port 3 of the shell, so that a large amount of accumulated dust particles in the reaction device are discharged, and internal blockage is avoided.
Further, one side of the shell is connected with a disassembly cover plate 14 through a screw 15, so that the catalyst is convenient to install, and a sealing gasket is arranged between the disassembly cover plate 14 and the shell to prevent air leakage.
When in use: the exhaust enters from the air inlet 2, is split by the splitter plate 5 and reacts with multiple rows and layers of catalysts, and the reducing gas is discharged through the air outlet 3 after the reaction is finished; blowing the attachments on the surface of the catalyst through a soot blower 11; the dust particles accumulated inside are discharged through the drain 13.
The utility model can resist a certain degree of impact without damage, can reasonably package a plurality of catalyst monomers together and maintain enough strength, improves internal supporting strength, has convenient catalyst packaging, higher space utilization rate and small exhaust resistance, ensures uniform mixing of exhaust gas and the catalyst, and improves conversion efficiency.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An SCR system reaction device, comprising a housing, characterized in that: the two ends of the shell are respectively provided with an air inlet (2) and an air outlet (3), the inside of the shell, which is close to the end of the air inlet (2), is provided with a plurality of flow dividing plates (5), the number of the flow dividing plates (5) is eight, the eight flow dividing plates (5) are uniformly arranged at the end of the air inlet (2), one side of the flow dividing plate (5) is uniformly provided with a plurality of rows of catalyst loaders (6) for installing catalysts, each row of both sides of catalyst loader (6) all are provided with interior baffle (8) and outer baffle (9), interior baffle (8) welding is inside the casing, outer baffle (9) and the inside sliding connection of casing, interior baffle (8) and outer baffle (9) are fence structure respectively and arrange side by side, the welding has backup pad (7) on interior baffle (8) for fixed catalyst loader (6).
2. An SCR system reaction device according to claim 1, wherein: the inside symmetry of casing is provided with slide (10), and slide (10) are the dovetail shape, the tip of outer baffle (9) is hook structure, the both ends sliding connection of outer baffle (9) is in slide (10).
3. An SCR system reaction device according to claim 1, wherein: the catalyst loader (6) is arranged on each row of inner baffles (8) in multiple layers.
4. An SCR system reaction device according to claim 1, wherein: the air inlet (2) and the air outlet (3) of the shell are symmetrical conical surfaces.
5. An SCR system reaction device according to claim 1, wherein: soot blowers (11) are symmetrically arranged on one side of each row of catalyst loaders (6), and the soot blowers (11) are provided with nozzles corresponding to the positions and the number of the catalysts, and the nozzles are opposite to the center of the catalysts.
6. An SCR system reaction device according to claim 5, wherein: the soot blower is characterized in that a connecting plate (18) is arranged in the horizontal direction inside the shell, the soot blower (11) is connected with the connecting plate (18) through bolts, a positioning pipe (12) is arranged in the vertical direction inside the shell, and a positioning rod on the soot blower (11) is matched with the positioning pipe (12).
7. An SCR system reaction device according to claim 1, wherein: a drain outlet (13) is arranged at one side of the exhaust port (3) end of the shell.
8. An SCR system reaction device according to claim 1, wherein: one side of the shell is connected with a disassembly cover plate (14) through a screw (15), and a sealing gasket is arranged between the disassembly cover plate (14) and the shell.
9. An SCR system reaction device according to claim 1, wherein: the shell consists of an outer shell (1) and an inner shell (4), and aluminum silicate cotton is filled between the inner shell (4) and the outer shell (1).
10. An SCR system reaction device according to claim 9, wherein: the inner shell (4) and the outer shell (1) are supported by an inclined bracket (16) and a square pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323363985.8U CN221096640U (en) | 2023-12-11 | 2023-12-11 | SCR system reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323363985.8U CN221096640U (en) | 2023-12-11 | 2023-12-11 | SCR system reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221096640U true CN221096640U (en) | 2024-06-07 |
Family
ID=91305963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323363985.8U Active CN221096640U (en) | 2023-12-11 | 2023-12-11 | SCR system reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221096640U (en) |
-
2023
- 2023-12-11 CN CN202323363985.8U patent/CN221096640U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |