CN217112218U - Denitration catalyst testing arrangement - Google Patents
Denitration catalyst testing arrangement Download PDFInfo
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- CN217112218U CN217112218U CN202220381986.1U CN202220381986U CN217112218U CN 217112218 U CN217112218 U CN 217112218U CN 202220381986 U CN202220381986 U CN 202220381986U CN 217112218 U CN217112218 U CN 217112218U
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Abstract
The utility model relates to a denitration catalyst testing arrangement, including the gas distribution dish, be provided with first pipeline on the gas distribution dish, the other end and the blender of first pipeline are connected, still be provided with the second pipeline on the gas distribution dish, the other end setting of second pipeline is between blender and reactor, the output and the flue gas analyzer of reactor are connected, lead to the simulation flue gas in the first pipeline, lead to NH in the second pipeline 3 . The device satisfies the activity test of denitration catalyst, does benefit to its activity evaluation, has promoted the flue gas emission and has reached standard, is applicable to industrial production.
Description
Technical Field
The utility model belongs to the technical field of the denitration catalyst test, a denitration catalyst testing arrangement is related to.
Background
The activity of the corrugated gas denitration catalyst is an important performance index of the corrugated gas denitration catalyst, and the activity directly determines the quality of the corrugated gas denitration catalyst, so that the corrugated gas denitration catalyst is one of important means for evaluating the corrugated gas denitration catalyst.
The existing national standard activity test method of the denitration catalyst can only test the activity of the corrugated denitration catalyst for coal burning, but the corrugated gas denitration catalyst still has high activity under low denitration efficiency due to the fact that the actual condition surface speed is generally high, the quality of the catalyst cannot be directly evaluated, and the test of the activity of the corrugated gas denitration catalyst cannot be met. Is not beneficial to the activity evaluation of the corrugated gas denitration catalyst.
In case can't accurately evaluate corrugated gas denitration catalyst's activity, can cause different producers and laboratory to measure the result diverse, can't mark this corrugated gas denitration catalyst's good or bad in unison, cause can't evaluate whether corrugated gas denitration catalyst reaches the time that needs to be changed, and then lead to the not up to standard condition of flue gas emission to appear.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome above-mentioned prior art's shortcoming, a denitration catalyst testing arrangement is provided, structural design is simple, high efficiency is high, and the denitration catalyst is placed through the intercepting fritter and is tested in the reactor, the denitration catalyst has been avoided still can appear high active phenomenon under the low denitration efficiency that the face speed is general great causes, can be according to the quality of test result direct evaluation catalyst, the activity test of denitration catalyst has been satisfied, do benefit to its activity evaluation, it is up to standard to have promoted the fume emission, and the device is suitable for industrial production.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
denitration catalyst testing arrangement, its characterized in thatThe device comprises a high-pressure gas distribution disc, wherein a first pipeline is arranged on the high-pressure gas distribution disc, the other end of the first pipeline is connected with a mixer, a second pipeline is further arranged on the high-pressure gas distribution disc, the other end of the second pipeline is arranged between the mixer and a reactor, the output end of the reactor is connected with a flue gas analyzer, simulated flue gas is introduced into the first pipeline, and NH is introduced into the second pipeline 3 。
Further, the mixer is connected to a flow controller.
Furthermore, a water supply device is connected to the flow controller, and a balance is arranged at the bottom of the water supply device.
Further, the inlet end of the reactor is provided with a mass flow meter.
Further, an electric heater is arranged outside the reactor.
Further, a condenser and a dryer are sequentially connected between the reactor and the flue gas analyzer.
Further, an exhaust port is arranged on the flue gas analyzer.
Further, a filter is arranged between the flue gas analyzer and the exhaust port, and saturated NaHCO is filled in the filter 3 And (3) solution.
Further, the first pipeline comprises a plurality of gas conveying pipes.
Further, a single piece of catalyst is hermetically placed in the reactor, and the size of the catalyst is 2cm × 10 cm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a denitration catalyst testing arrangement, structural design is simple, and convenient for operation, place through the denitration catalyst of intercepting fritter and test in the reactor, avoided the denitration catalyst still can appear high active phenomenon because of the general great denitration efficiency that causes of face speed under, can be according to the quality of test result direct evaluation catalyst, satisfied the activity test of denitration catalyst, do benefit to its activity evaluation, promoted that the fume emission is up to standard, be applicable to industrial production.
In the present invention, other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a structural diagram of a denitration catalyst testing device of the present invention;
wherein: 1. a gas distribution plate; 2. a first pipeline; 3. a mixer; 4. a second pipeline; 5. a reactor; 6. a flue gas analyzer; 7. a flow controller; 8. a water supply device; 9. a balance; 10. an electric heater; 11. an exhaust port; 12. a condenser; 13. and (7) a dryer.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.
A denitration catalyst testing arrangement, includes gas distribution dish 1, is provided with first pipeline 2 on the gas distribution dish 1, the other end of first pipeline 2 with mixThe mixer 3 is connected, a second pipeline 4 is further arranged on the gas distribution plate 1, the other end of the second pipeline 4 is arranged between the mixer 3 and the reactor 5, the output end of the reactor 5 is connected with the flue gas analyzer 6, and the mixer 3 is connected with the flow controller 7. The gas distribution plate 1 is used as a pressure reducing device to convert gas in a high-pressure gas cylinder into low-pressure gas and then the low-pressure gas is introduced into a mixer 3, the first pipeline 2 comprises 5 pipelines which are respectively introduced with CO 2 、O 2 、N 2 、NO、SO 2 Wherein, the oxygen content is 2.5-3.5%, the carbon dioxide is 2.5-3.5%, the sulfur dioxide is 400-600 ppm, the nitrogen oxide is 150-200 ppm, the total gas amount is controlled to be 3000-4000 cc/min, a gas analyzer is arranged at the outlet of the first pipeline 2 of the gas distribution plate 1 for analyzing the flue gas parameters, the purpose is to simulate the flue gas by mixing five gases, and NH is introduced into the second pipeline 4 3 。
Further, a water supply device 8 is connected to the flow controller 7, a balance 9 is arranged at the bottom of the water supply device 8, and the amount of water introduced is controlled by the flow controller 7 and the balance 9.
Further, an electric heater 10 is provided outside the reactor 5, and the temperature inside the reactor 5 is heated to 350 ℃ by the electric heater 10.
Further, a condenser 12 and a dryer 13 are sequentially connected between the reactor 5 and the flue gas analyzer 6, so that test data are more accurate.
Further, an exhaust port 11 is arranged on the flue gas analyzer 6, a filter is arranged between the flue gas analyzer 6 and the exhaust port 11, and saturated NaHCO is filled in the filter 3 Solution, removal of SO from mixed gas 2 。
Specifically, a single piece of catalyst is sealingly placed in the reactor 5, said catalyst having dimensions of 2cm x 10 cm.
The denitration catalyst mainly acts as a main substance for reducing nitrogen monoxide of an atmospheric pollutant, and has the reaction principle that ammonia gas can be adsorbed on the surface of the catalyst and can react with the nitrogen monoxide under the action of the catalyst, wherein the chemical formula is as follows:
NO+NH 3 →N 2 +H 2 0
the main action principle of the device is to simulate the actual smoke conditions of different projects, namely H with different flow rates is introduced 2 0、CO 2 、O 2 、N 2 、NO、SO 2 . Mixing the gases, heating the gases in a reactor to a working condition of 350 ℃ (national standard temperature), loading a catalyst sheet of 2cm multiplied by 10cm into the reactor in advance, condensing and drying the flue gas at an outlet, and introducing the flue gas into a flue gas analyzer to measure the content of various gases, wherein the key point is the concentration of nitric oxide. When all indexes of the flue gas at the outlet of the reactor meet the requirements, NH3 is introduced at the inlet of the reactor, the molar ratio of ammonia to nitric oxide is controlled to be 1, and NO and NH are subjected to the action of a denitration catalyst 3 And (4) reacting, wherein the nitric oxide value in the flue gas analyzer is reduced, and the activity value of the denitration catalyst is calculated by calculating the reduced value of the nitric oxide.
The utility model carries out activity test for the corrugated gas denitration catalyst,
the activity formula is: k is AV Ln (1-eta)
In the formula: k-denitration catalyst Activity
AV-surface velocity of denitration catalyst
Eta, the denitration efficiency when the ammonia nitrogen molar ratio is 1.
According to the formula, the activity K of the corrugated gas denitration catalyst is in direct proportion to the surface speed of the AV denitration catalyst, the surface speed difference of the corrugated coal-fired denitration catalyst is not large, the influence on the activity is only the actual denitration efficiency, the surface speed of the corrugated gas denitration catalyst is generally high, the denitration efficiency is not high, but the activity is high, and the performance of the corrugated denitration catalyst cannot be truly reflected. The utility model discloses make corrugated gas denitration catalyst section into 2cm x 10 cm's monolithic in the reactor, the gas flow who gets into the micro reactor through mass flow meter control to monitor corrugated gas denitration catalyst's activity.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (10)
1. The utility model provides a denitration catalyst testing arrangement, its characterized in that, includes gas distribution dish (1), be connected with first pipeline (2) on gas distribution dish (1), the other end and the blender (3) of first pipeline (2) are connected, still be connected with second pipeline (4) on gas distribution dish (1), the other end of second pipeline (4) is fixed between blender (3) and reactor (5), the output and the flue gas analysis appearance (6) of reactor (5) are connected, lead to simulated flue gas in first pipeline (2), lead to NH in second pipeline (4) 3 。
2. The denitration catalyst testing apparatus according to claim 1, wherein the mixer (3) is connected to a flow controller (7).
3. The denitration catalyst testing device according to claim 2, wherein a water supply device (8) is connected to the flow controller (7), and a balance (9) is arranged at the bottom of the water supply device (8).
4. The denitration catalyst testing apparatus according to claim 1, wherein an inlet end of the reactor (5) is provided with a mass flow meter.
5. The denitration catalyst testing apparatus according to claim 1, wherein an electric heater (10) is provided outside the reactor (5).
6. The denitration catalyst testing device according to claim 1, wherein a condenser (12) and a dryer (13) are connected between the reactor (5) and the flue gas analyzer (6) in sequence.
7. The denitration catalyst testing device according to claim 1, wherein the flue gas analyzer (6) is provided with an exhaust port (11).
8. The denitration catalyst testing device of claim 7, wherein a filter is arranged between the flue gas analyzer (6) and the exhaust port (11), and saturated NaHCO is filled in the filter 3 And (3) solution.
9. The denitration catalyst testing apparatus according to claim 1, wherein the first pipe (2) comprises a plurality of gas delivery pipes.
10. The denitration catalyst testing apparatus according to claim 1, wherein a single piece of catalyst is hermetically placed in the reactor (5), and the size of the catalyst is 2cm x 10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220381986.1U CN217112218U (en) | 2022-02-24 | 2022-02-24 | Denitration catalyst testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220381986.1U CN217112218U (en) | 2022-02-24 | 2022-02-24 | Denitration catalyst testing arrangement |
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| CN217112218U true CN217112218U (en) | 2022-08-02 |
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| CN202220381986.1U Active CN217112218U (en) | 2022-02-24 | 2022-02-24 | Denitration catalyst testing arrangement |
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