CN216484829U - Performance test platform for diesel vehicle tail gas treatment catalyst - Google Patents
Performance test platform for diesel vehicle tail gas treatment catalyst Download PDFInfo
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- CN216484829U CN216484829U CN202122648950.3U CN202122648950U CN216484829U CN 216484829 U CN216484829 U CN 216484829U CN 202122648950 U CN202122648950 U CN 202122648950U CN 216484829 U CN216484829 U CN 216484829U
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Abstract
A performance test platform for a diesel vehicle tail gas treatment catalyst comprises a filter, a gas mixing tank, a DOC (lateral oxidation catalyst) reaction furnace, a CDPF (continuous catalytic reduction) reaction furnace, an SCR (selective catalytic reduction) reaction furnace, a gas-liquid separator, a smoke probe installation pool and a smoke analyzer; the DOC reaction furnace, the CDPF reaction furnace and the SCR reaction furnace are connected through a first three-way valve, a second three-way valve and a third three-way valve, the gas-liquid separator is connected with the SCR reaction furnace, the smoke probe installation pool is connected with the gas-liquid separator, and a probe of the smoke analyzer is arranged in the smoke probe installation pool. The performance test platform provided by the utility model can be used for performing single performance test and integrated performance test, has the advantages of simple structure, convenience in manufacture and excellent performance, and is beneficial to popularization and use.
Description
Technical Field
The utility model relates to the technical field of diesel vehicle tail gas treatment, in particular to a performance test platform for a diesel vehicle tail gas treatment catalyst.
Background
Over the past few decades, diesel engines have found widespread use in heavy tools and trucks and the retention of diesel vehicles has increased due to their lower fuel consumption and higher thermal efficiency compared to gasoline engines. Diesel vehicles also emit a large amount of pollutants such as CO, HC, NOx, PM, etc., which cause serious pollution to the environment in which we live. At present, an exhaust gas treatment is mainly carried out by using a cylinder outside purification technology (DOC + DPF + SCR), and a catalyst is the core of the technology, and a platform is needed for carrying out performance evaluation on the prepared catalyst. In the prior art, a good test platform is not available to simultaneously complete the performance test of the DOC, the DPF and the SCR catalysts, so that a test platform is urgently needed to be provided for rapidly testing the performance of the diesel vehicle exhaust treatment catalyst.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a performance test platform for a diesel vehicle tail gas treatment catalyst, and aims to solve the technical problems.
In order to achieve the above object, the present invention provides a performance testing platform for a diesel vehicle exhaust treatment catalyst, comprising: the device comprises a filter, a gas mixing tank, a DOC (catalytic oxidation reactor), a CDPF (continuous catalytic reduction) reaction furnace, an SCR (selective catalytic reduction) reaction furnace and a flue gas analyzer; the filter is connected to the gas mixing tank through a pipeline, and an outlet of the gas mixing tank is connected with an inlet of the first three-way valve;
a first outlet of the first three-way valve is connected to the DOC reaction furnace through a pipeline; the DOC reaction furnace gas outlet end is connected with the inlet of the second three-way valve;
a first outlet of the second three-way valve is connected to the CDPF reaction furnace through a pipeline, and an air outlet end of the CDPF reaction furnace is connected with a first inlet of the third three-way valve;
a second outlet of the first three-way valve and an outlet of the third three-way valve are converged through a pipeline and then connected to the SCR reactor; a second outlet of the second three-way valve is connected with a second inlet of the third three-way valve through a pipeline; the realization device can perform single performance test and integrated performance test;
the gas outlet end of the SCR reaction furnace is connected to a gas-liquid separator, the gas-liquid separator realizes gas-liquid separation of reacted gas, the gas outlet end of the gas-liquid separator is connected to a smoke probe mounting pool, and a probe of a smoke analyzer is arranged in the smoke probe mounting pool;
the DOC reaction furnace, the CDPF reaction furnace and the SCR reaction furnace are respectively provided with a quartz reaction tube, and the quartz reaction tubes are used for providing reaction sites.
Preferably, the smoke probe installation pool is connected with a tail gas absorption bottle through a pipeline and used for collecting tail gas generated in the test.
Preferably, the filter is provided in plurality and is connected to the gas mixing tank through a pipe.
Preferably, a check valve is provided between the filter and the gas mixing tank.
Preferably, an electronic flowmeter is arranged between the filter and the one-way valve, and the electronic flowmeter is used for controlling the flow of the gas path.
Preferably, a gas switch valve is arranged behind the filter and used for independently controlling the gas path.
Preferably, a condensing device is provided on the gas-liquid separator.
Preferably, a needle valve is arranged at the liquid outlet end of the gas-liquid separator.
Preferably, the DOC reaction furnace, the SCR reaction furnace and the CDPF reaction furnace have the same size, and the quartz reaction tubes are convenient to mount and exchange due to the adoption of the same size.
Preferably, a pressure gauge is arranged between the gas mixing tank and the first three-way valve and used for detecting the outlet pressure of the gas mixing tank.
The utility model achieves the following beneficial effects: through the test platform provided by the utility model, after being mixed by the gas mixing tank, the first three-way valve is adjusted, so that the gas flows through the SCR reaction furnace and the gas-liquid separator which are not filled with the catalyst and then enters the smoke probe installation pool, the initial concentrations of various gases are analyzed, the gas switch valve is closed after the initial concentrations are obtained, then the catalyst is filled, the gases can respectively flow through the DOC reaction furnace, the CDPF reaction furnace and the SCR reaction furnace for reaction by adjusting the first three-way valve, the second three-way valve and the third three-way valve, the reacted tail gas enters the gas-liquid separator for gas-liquid separation, then the gases enter the smoke probe installation pool, and the concentrations of various gases after the reaction are detected by the smoke analyzer. The performance test platform provided by the utility model can be used for performing single performance test and integrated performance test, has the advantages of simple structure, convenience in manufacture and excellent performance, and is beneficial to popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a diesel exhaust treatment catalyst performance testing platform provided in the present invention;
the reference numbers illustrate: 1-a filter; 2-gas switching valve; 3-an electronic flow meter; 4-a one-way valve; 5-a gas mixing tank; 6-pressure gauge; 7-a first three-way valve; 8-quartz reaction tube; 9-DOC reaction furnace; 10-CDPF reactor; 11-SCR reactor; 12-a gas-liquid separator; 13-needle valve; 14-a second three-way valve; 15-a third three-way valve; 16-a smoke probe installation pool; 17-a flue gas analyzer; 18-tail gas absorption bottle; 19-condensation device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 shows a specific embodiment of a performance test platform for a diesel exhaust treatment catalyst provided in the present invention, the test platform includes: the device comprises a filter 1, a gas mixing tank 5, a DOC reaction furnace 9, a CDPF reaction furnace 10, an SCR reaction furnace 11 and a flue gas analyzer 17; the filter 1 is connected to a gas mixing tank 5 through a pipeline, and an outlet of the gas mixing tank 5 is connected with an inlet of a first three-way valve 7; a pressure gauge 6 is arranged between the gas mixing tank 5 and the first three-way valve 7 and is used for detecting the outlet pressure of the gas mixing tank;
a first outlet of the first three-way valve 7 is connected to the DOC reaction furnace 9 through a pipeline; the gas outlet end of the DOC reaction furnace 9 is connected with the inlet of a second three-way valve 14;
a first outlet of the second three-way valve 14 is connected to the CDPF reaction furnace 10 through a pipeline, and an outlet end of the CDPF reaction furnace 10 is connected with a first inlet of a third three-way valve 15;
a second outlet of the first three-way valve 7 and an outlet of the third three-way valve 15 are converged through a pipeline and then connected to the SCR reactor 11; a second outlet of the second three-way valve 14 is connected to a second inlet of a third three-way valve 15 via a conduit. The realization device can perform single performance test and integrated performance test;
the gas outlet end of the SCR reaction furnace 11 is connected to a gas-liquid separator 12, the gas outlet end of the gas-liquid separator 12 is connected to a smoke probe installation pool 16, and a probe of a smoke analyzer 17 is arranged in the smoke probe installation pool 16;
the DOC reaction furnace 9, the CDPF reaction furnace 10, and the SCR reaction furnace 11 are respectively provided with a quartz reaction tube 8, and the quartz reaction tube 8 is used to provide a reaction site. The DOC reaction furnace 9, the SCR reaction furnace 11 and the CDPF reaction furnace 10 are the same in size, and the quartz reaction tube 8 is convenient to mount and exchange by adopting the same size.
In this embodiment, the smoke probe installation pool 16 is connected with a tail gas absorption bottle 18 through a pipeline for collecting tail gas generated in the test.
In the present embodiment, the filter 1 is provided in plural numbers, and is connected to the gas mixing tank 5 through pipes, respectively. A one-way valve 4 is provided between each filter 1 and the gas mixing tank 5. An electronic flowmeter 3 is arranged between the filter 1 and the one-way valve 4 and used for controlling the flow of the gas path. An air switch valve 2 is arranged behind the filter 1, and the air switch valve 2 is used for independently controlling each air path.
In the present embodiment, the gas-liquid separator 12 is provided with a condensing device 19, and the liquid outlet end of the gas-liquid separator 12 is provided with a needle valve 13.
The working principle of the utility model is as follows:
during operation, gas firstly passes through each filter 1 and each gas switch valve 2, then the flow of each gas circuit is adjusted through the electronic flowmeter 3, the total flow is set to be 1L/min, and after the gas is mixed through the gas mixing tank 5, the first three-way valve 7 is adjusted, so that the gas flows through the SCR reaction furnace 11 and the gas-liquid separator 12 which are not filled with the catalyst and then enters the smoke probe installation pool 16, the initial concentration of each gas is analyzed, the gas switch valves 2 are closed after the initial concentration is obtained, and then the catalyst is filled.
By adjusting the first three-way valve 7, the second three-way valve 14, and the third three-way valve 15, the gas can be made to flow through the DOC reaction furnace 9, the CDPF reaction furnace 10, and the SCR reaction furnace 11, respectively, and then the heating jackets of the DOC reaction furnace 9, the CDPF reaction furnace 10, and the SCR reaction furnace 11 are controlled to be heated up, so that the catalytic reaction is performed at a certain temperature.
The reacted tail gas enters a gas-liquid separator 12 for gas-liquid separation, then the gas enters a flue gas probe installation pool 16, the concentration of various reacted gases is detected by a flue gas analyzer 17, and finally the tail gas is absorbed by a tail gas absorption bottle 18.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A performance test platform for a diesel vehicle exhaust treatment catalyst, comprising: the device comprises a filter (1), a gas mixing tank (5), a DOC reaction furnace (9), a CDPF reaction furnace (10), an SCR reaction furnace (11) and a flue gas analyzer (17); the filter (1) is connected to the gas mixing tank (5) through a pipeline, and an outlet of the gas mixing tank (5) is connected with an inlet of the first three-way valve (7);
a first outlet of the first three-way valve (7) is connected to the DOC reaction furnace (9) through a pipeline; the gas outlet end of the DOC reaction furnace (9) is connected with the inlet of a second three-way valve (14);
a first outlet of the second three-way valve (14) is connected to the CDPF reaction furnace (10) through a pipeline, and an air outlet end of the CDPF reaction furnace (10) is connected with a first inlet of a third three-way valve (15);
a second outlet of the first three-way valve (7) and an outlet of the third three-way valve (15) are converged through a pipeline and then connected to the SCR reactor (11);
a second outlet of the second three-way valve (14) is connected with a second inlet of a third three-way valve (15) through a pipeline;
the gas outlet end of the SCR reaction furnace (11) is connected to a gas-liquid separator (12), the gas outlet end of the gas-liquid separator (12) is connected to a smoke probe installation pool (16), and a probe of a smoke analyzer (17) is arranged in the smoke probe installation pool (16);
the DOC reaction furnace (9), the CDPF reaction furnace (10) and the SCR reaction furnace (11) are respectively provided with a quartz reaction tube (8).
2. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: the smoke probe installation pool (16) is connected with a tail gas absorption bottle (18) through a pipeline.
3. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: the number of the filters (1) is multiple, and the filters are respectively connected to the gas mixing tank (5) through pipelines.
4. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: a one-way valve (4) is arranged between the filter (1) and the gas mixing tank (5).
5. The diesel vehicle exhaust treatment catalyst performance test platform of claim 4, wherein: an electronic flowmeter (3) is arranged between the filter (1) and the one-way valve (4).
6. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: a gas switching valve (2) is arranged behind the filter (1).
7. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: a condensing device (19) is provided on the gas-liquid separator (12).
8. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: a needle valve (13) is arranged at the liquid outlet end of the gas-liquid separator (12).
9. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: the DOC reaction furnace (9), the SCR reaction furnace (11) and the CDPF reaction furnace (10) are the same in size.
10. The diesel vehicle exhaust treatment catalyst performance test platform of claim 1, wherein: and a pressure gauge (6) is arranged between the gas mixing tank (5) and the first three-way valve (7).
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| CN202122648950.3U CN216484829U (en) | 2021-11-01 | 2021-11-01 | Performance test platform for diesel vehicle tail gas treatment catalyst |
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| CN202122648950.3U CN216484829U (en) | 2021-11-01 | 2021-11-01 | Performance test platform for diesel vehicle tail gas treatment catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060783A (en) * | 2022-08-16 | 2022-09-16 | 中国科学院地质与地球物理研究所 | Carbonate total oxygen isotope measuring system and measuring method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060783A (en) * | 2022-08-16 | 2022-09-16 | 中国科学院地质与地球物理研究所 | Carbonate total oxygen isotope measuring system and measuring method thereof |
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