A method and device for testing equivalence of monolithic catalysts and particulate catalysts

Abstract

The present application belongs to the field of catalyst testing, and particularly relates to a monolithic catalyst and granular catalyst equivalent testing method and device, wherein the method comprises the following steps: S1, obtaining a monolithic catalyst and a granular catalyst with the same active ingredient load; S2, obtaining a full equivalent granular catalyst; S3, testing the catalytic performance of the monolithic catalyst and the full equivalent granular catalyst, and comparing the performance of the monolithic catalyst and the granular catalyst. The monolithic catalyst and granular catalyst equivalent testing method obtains a full equivalent granular catalyst with the same active ingredient load, flow resistance, filling height and substrate contact time as the monolithic catalyst through the above steps, and finally compares the performance of the full equivalent granular catalyst and the monolithic catalyst, so that the performance of the monolithic catalyst and the granular catalyst can be evaluated under the same conditions.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of catalyst testing, and particularly relates to a monolithic catalyst and granular catalyst equivalent testing method and device. BACKGROUND

[0002] When the catalytic performances of the granular catalyst and the monolithic catalyst are compared, due to the inconsistent carrier forms, there are great differences in the filling height, porosity and other aspects of the two types of catalysts filled in the catalytic testing device, which further causes problems such as the gas pressure drop generated by the test gas in the different bed layers, the contact time with the active ingredients, and the like, and the lack of a unified evaluation standard cannot evaluate the catalytic efficiency of the two types of catalysts.

[0003] Specifically, if the active metal mass is taken as the unified standard, under the condition of consistent loading, due to the closer arrangement of the granular catalyst, the height after the arrangement of the particles is much lower than that of the monolithic catalyst, the contact time is shortened, and the airflow resistance is also increased due to the close arrangement; if the same filling height is taken as the standard, the amount of the granular catalyst will be much higher than that of the monolithic catalyst.

[0004] Therefore, for the comparison of the catalytic efficiency of different types of catalysts, there are still certain difficulties, and there is still a lack of a method for evaluating the efficiency of the two types of catalysts under equal conditions. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a monolithic catalyst and granular catalyst equivalent testing method and device for testing the monolithic catalyst and the granular catalyst under equal conditions.

[0006] The present application provides a monolithic catalyst and granular catalyst equivalent testing method, which comprises the following steps:

[0007] S1, obtaining a monolithic catalyst and a granular catalyst with the same active ingredient loading;

[0008] S2, obtaining a full equivalent granular catalyst;

[0009] S21, testing the flow resistance of the monolithic catalyst using a flow resistance testing device to obtain the flow resistance of the monolithic catalyst;

[0010] S22, placing the granular catalyst into the inner cavity of a catalyst mounting sleeve with the same size as the outer shape of the monolithic catalyst, and adding hollow filling bodies and solid filling bodies into the inner cavity of the catalyst mounting sleeve until the granular catalyst, the hollow filling bodies and the solid filling bodies fill the catalyst mounting sleeve, and the catalyst mounting sleeve, the granular catalyst, the hollow filling bodies and the solid filling bodies form a size equivalent granular catalyst;

[0011] S23, testing flow resistance of the size equivalent particle type catalyst using the flow resistance testing device, adjusting the proportion of the hollow filler and the solid filler until the flow resistance of the size equivalent particle type catalyst is consistent with the flow resistance of the monolithic catalyst, obtaining a full equivalent particle type catalyst;

[0012] S3, testing catalytic performance of the monolithic catalyst and the full equivalent particle type catalyst, and comparing the performance of the monolithic catalyst and the particle type catalyst.

[0013] Further, the S21 further comprises:

[0014] placing the monolithic catalyst into the inner cavity of the catalyst mounting sleeve with the inner cavity size consistent with the size of the monolithic catalyst;

[0015] obtaining the flow resistance of the monolithic catalyst including the flow resistance of the catalyst mounting sleeve.

[0016] Further, the S23 further comprises:

[0017] obtaining the flow resistance of the catalyst mounting sleeve;

[0018] the flow resistance of the size equivalent particle type catalyst is the total flow resistance minus the flow resistance of the catalyst mounting sleeve.

[0019] Further, the obtaining of the monolithic catalyst and the particle type catalyst with the same active ingredient load includes:

[0020] calculating the active ingredient load of the monolithic catalyst according to the mass of the monolithic catalyst and the load rate;

[0021] calculating the mass of the particle type catalyst according to the load rate of the individual particles in the particle type catalyst and the active ingredient load of the monolithic catalyst;

[0022] The particle type catalyst with the mass has the same active ingredient load as the monolithic catalyst.

[0023] Further, the testing of the catalytic performance of the monolithic catalyst and the full equivalent particle type catalyst includes:

[0024] performing N2O decomposition testing on the monolithic catalyst and the full equivalent particle type catalyst.

[0025] The application also provides a monolithic catalyst and particle type catalyst equivalent testing device for performing the monolithic catalyst and particle type catalyst equivalent testing method, which comprises a catalyst mounting sleeve, a hollow filler, a solid filler, a flow resistance testing device, and a catalytic performance testing device.

[0026] Further, the inner cavity of the catalyst mounting sleeve is hollow, and the size of the inner cavity is consistent with the size of the monolithic catalyst.

[0027] At least one end wall of the catalyst mounting sleeve is provided with a mesh plate for air permeation.

[0028] Further, the size of the hollow filler and the solid filler is consistent with the size of the single particle of the granular catalyst.

[0029] Further, the hollow filler comprises two oppositely arranged annular rings and a plurality of connecting columns arranged between the two annular rings and connecting the two annular rings.

[0030] Further, the catalytic performance testing device comprises a reactor for mounting the monolithic catalyst or the fully equivalent granular catalyst, and the reactor is provided with a gas supply device on one side and a gas chromatograph on the other side.

[0031] The beneficial effects of the present application are that the equivalent testing method of the monolithic catalyst and the granular catalyst can obtain the fully equivalent granular catalyst with consistent active ingredient load, flow resistance, filling height and substrate contact time compared with the monolithic catalyst through the above steps, and finally compare the performance of the fully equivalent granular catalyst and the monolithic catalyst, so as to realize the performance evaluation of the monolithic catalyst and the granular catalyst under the same conditions. The problem that there is no method for evaluating the performance of the monolithic catalyst and the granular catalyst under the same conditions is solved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a flowchart of the testing method in the present application; Figure 1 Figure 2 is a schematic diagram of the catalytic performance testing device in the present application;

[0033] Figure 3 is a structural schematic diagram of the monolithic catalyst in the present application; Figure 2 Figure 4 is a front view of the monolithic catalyst in the present application (the size unit in the figure is mm);

[0034] Figure 5 is a structural schematic diagram of the catalyst mounting sleeve in the present application; Figure 3 Figure 6 is a front view of the catalyst mounting sleeve in the present application (the size unit in the figure is mm);

[0035] Figure 7 is a front view of the catalyst mounting sleeve in the present application (the size unit in the figure is mm) Figure 4 Figure 8 is a front view of the catalyst mounting sleeve in the present application (the size unit in the figure is mm)

[0036] Figure 5 Figure 9 is a structural schematic diagram of the catalyst mounting sleeve in the present application;

[0037] Figure 10 is a front view of the catalyst mounting sleeve in the present application (the size unit in the figure is mm) Figure 6 Figure 11 is a front view of the catalyst mounting sleeve in the present application (the size unit in the figure is mm)

[0038] Figure 7 ​​It is a structure schematic view of the hollow filling body in the present application.

[0039] Attached Figure 8 It is a top view of the hollow filling body in the present application (the size unit in the figure is mm).

[0040] Attached Figure 9 It is a front view of the hollow filling body in the present application (the size unit in the figure is mm).

[0041] Attached Figure 10 It is a structure schematic view of the solid filling body or particle in the present application.

[0042] Attached Figure 11 It is a top view of the solid filling body or particle in the present application (the size unit in the figure is mm).

[0043] Attached Figure 12 It is a front view of the solid filling body or particle in the present application (the size unit in the figure is mm).

[0044] Attached Figure 13 It is a schematic view of the whole catalyst after the catalyst is installed into the catalyst installation sleeve in the present application.

[0045] Attached Figure 14 It is a schematic view of the full equivalent particle type catalyst in the present application.

[0046] Attached Figure 15 It is a comparison chart of N2O catalytic decomposition performance of the whole catalyst, the full equivalent particle type catalyst, the pure filler and the non-loaded whole catalyst with temperature change.

[0047] In the figure, 1-catalyst installation sleeve; 11-mesh plate; 2-hollow filling body; 21-circular ring; 22-connecting column; 3-solid filling body; 4-catalytic performance testing device; 41-gas cylinder; 42-flow meter; 43-reactor; 44-gas chromatograph; 45-heating furnace; 46-computer; 5-whole catalyst; 6-particle type catalyst; 61-particle. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0049] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly.

[0050] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0051] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection, or physical connection or wireless communication connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0053] As shown in the accompanying drawings Figure 1 -attached Figure 15 The present application provides a monolithic catalyst and equivalent test method of granular catalyst, comprising the following steps:

[0054] S1, obtaining monolithic catalyst 5 and granular catalyst 6 with the same active ingredient load, wherein the granular catalyst 6 is composed of a plurality of particles 61;

[0055] S2, obtaining a full equivalent granular catalyst, the active ingredient load, flow resistance, filling height and substrate contact time of the full equivalent granular catalyst and the monolithic catalyst 5 are consistent, so as to realize the catalytic efficiency test and comparison of different types of catalysts under the same conditions and the same standard, and facilitate the performance evaluation of different types of catalysts under the same conditions;

[0056] Obtaining a full equivalent granular catalyst comprises the following steps:

[0057] S21, test the flow resistance of the monolithic catalyst 5 using a flow resistance testing device to obtain the flow resistance of the monolithic catalyst 5;

[0058] S22, place the particulate catalyst 6 into the inner cavity of the catalyst mounting sleeve 1 whose inner cavity size is consistent with the outer shape size of the monolithic catalyst 5. Since the volume of the particulate catalyst 6 is much smaller than that of the monolithic catalyst 5 under the same active component load, there is still a lot of space left in the inner cavity after the particulate catalyst 6 is filled into the inner cavity. At this time, hollow filler 2 and solid filler 3 are added into the inner cavity of the catalyst mounting sleeve 1 until the particulate catalyst 6, hollow filler 2 and solid filler 3 fill the catalyst mounting sleeve 1. The catalyst mounting sleeve 1, particulate catalyst 6, hollow filler 2 and solid filler 3 form a size equivalent particulate catalyst. The hollow filler 2 and solid filler 3 are used to supplement the space in the inner cavity, and the particles 61 of the particulate catalyst 6 can be uniformly distributed in the inner cavity after mixing with the particulate catalyst 6. This ensures that the particulate catalyst 6 has the same active component load, filling height and substrate contact time as the monolithic catalyst 5. In addition, the ratio of the hollow filler 2 and solid filler 3 can be adjusted to ensure that their flow resistances are consistent. At this time, the size equivalent particulate catalyst and the monolithic catalyst 5 have the same active component load, filling height, substrate contact time, and the flow resistance may also be different;

[0059] S23, test the flow resistance of the size equivalent particulate catalyst using a flow resistance testing device. At this time, if the flow resistance of the size equivalent particulate catalyst is significantly different from that of the monolithic catalyst 5, adjust the ratio of the hollow filler 2 and solid filler 3 until the flow resistance of the size equivalent particulate catalyst is consistent with that of the monolithic catalyst 5, i.e. the catalyst mounting sleeve 1, particulate catalyst 6 and specific ratio of hollow filler 2 and solid filler 3 form a full equivalent particulate catalyst. At this time, the full equivalent particulate catalyst and the monolithic catalyst 5 have the same active component load, flow resistance, filling height and substrate contact time, and their standards are consistent;

[0060] S3, test the catalytic performance of the monolithic catalyst 5 and the full equivalent particulate catalyst, compare the performance of the monolithic catalyst 5 and the particulate catalyst 6, and then evaluate the efficiency of the monolithic catalyst 5 and the particulate catalyst 6 under the same conditions.

[0061] It should be noted that the flow resistance of the size equivalent particle type catalyst is preferably completely equal to the flow resistance of the monolithic catalyst 5, but it is difficult to adjust the flow resistance of the size equivalent particle type catalyst to be consistent with the flow resistance of the monolithic catalyst 5 in actual experiments, so when the flow resistance of the size equivalent particle type catalyst is within a set value of the flow resistance of the monolithic catalyst 5, it is considered that the flow resistances of the two are consistent, and the full equivalent particle type catalyst is obtained.

[0062] The monolithic catalyst and particle type catalyst equivalent test method of the present application obtains a full equivalent particle type catalyst which has consistent active ingredient loadings, flow resistances, filling heights, and substrate contact times compared with the monolithic catalyst 5 through the above steps, and finally compares the performance of the full equivalent particle type catalyst and the monolithic catalyst, so that the performance evaluation of the monolithic catalyst 5 and the particle type catalyst 6 under the same conditions is realized. The problem that there is currently a lack of a method for evaluating the performance of the monolithic catalyst 5 and the particle type catalyst 6 under the same conditions is solved.

[0063] Since the full equivalent particle type catalyst needs to be supported by the catalyst mounting sleeve 1, and the mesh plate 11 on the catalyst mounting sleeve 1 needs to hold the particle type catalyst 6, the hollow filler 2 and the solid filler 3 while providing air permeability, the flow resistance of the catalyst mounting sleeve 1 is included when obtaining the flow resistance of the full equivalent particle type catalyst. In order to avoid the flow resistance of the mesh plate 11 on the catalyst mounting sleeve 1 interfering with the consistency of the experimental conditions.

[0064] In one embodiment, the S21 further includes:

[0065] The monolithic catalyst 5 is placed in the inner cavity of the catalyst mounting sleeve 1 whose inner cavity size is consistent with the size of the monolithic catalyst 5;

[0066] The flow resistance of the monolithic catalyst 5 includes the flow resistance of the catalyst mounting sleeve 1. At this time, the flow resistance of the monolithic catalyst 5 also includes the flow resistance of the mesh plate 11 on the catalyst mounting sleeve 1, so that the flow resistance of the full equivalent particle type catalyst is consistent with the flow resistance of the monolithic catalyst 5, and the test conditions are consistent. In this embodiment, when the catalytic performance of the monolithic catalyst 5 is tested, the monolithic catalyst 5 is also installed in the catalyst mounting sleeve 1.

[0067] In another embodiment, the monolithic catalyst 5 is not used with the catalyst mounting sleeve 1 when the flow resistance is tested and the catalytic performance is tested, and at this time, the S23 further includes:

[0068] The flow resistance of the catalyst mounting sleeve 1 is obtained;

[0069] The flow resistance of the size equivalent particle type catalyst is the total flow resistance minus the flow resistance of the catalyst mounting sleeve 1, wherein the total flow resistance is the flow resistance of the particle type catalyst 6, the hollow filler 2 and the solid filler 3 plus the flow resistance of the catalyst mounting sleeve 1. In this embodiment, by subtracting the flow resistance of the catalyst mounting sleeve 1, the flow resistance of the full equivalent particle type catalyst is consistent with the flow resistance of the monolithic catalyst 5, ensuring consistent test conditions.

[0070] In one embodiment, the monolithic catalyst 5 and the particle type catalyst 6 with the same active ingredient load include:

[0071] According to the mass of the monolithic catalyst 5 and the load rate, wherein the mass can be directly weighed to obtain, and the load rate is a known amount, the active ingredient load of the monolithic catalyst 5 is calculated, specifically, the mass of the monolithic catalyst 5 multiplied by the load rate is equal to the active ingredient load;

[0072] According to the load rate of the single particle 61 in the particle type catalyst 6 and the active ingredient load of the monolithic catalyst 5, wherein the active ingredient load of the monolithic catalyst 5 is calculated in the previous step, and the load rate of the single particle 61 is a known amount, the mass of the particle type catalyst 6 is calculated, specifically, the mass of the particle type catalyst 6 is equal to the active ingredient load of the monolithic catalyst 5 divided by the load rate;

[0073] The mass of the particle type catalyst 6 is the same as the active ingredient load of the monolithic catalyst 5. It should be noted that when obtaining the particle type catalyst 6 with the same active ingredient load as the monolithic catalyst 5, there is a certain error between the mass of the running particle type catalyst 6 and the theoretically required mass.

[0074] In one embodiment, the catalytic performance test of the monolithic catalyst 5 and the full equivalent particle type catalyst includes:

[0075] The N2O decomposition test is performed on the monolithic catalyst 5 and the full equivalent particle type catalyst, and then the N2O decomposition rate of the monolithic catalyst 5 and the particle type catalyst 6 can be obtained.

[0076] The present application also provides a monolithic catalyst and particle type catalyst equivalent test device for performing the above-mentioned monolithic catalyst and particle type catalyst equivalent test method, which includes a catalyst mounting sleeve 1, a hollow filler 2, a solid filler 3, a flow resistance test device and a catalytic performance test device 4.

[0077] In one of the embodiments, the inner cavity of the catalyst mounting sleeve 1 is hollow, and the size of the inner cavity is consistent with the size of the monolithic catalyst 5, and the monolithic catalyst 5 is preferably in a cylindrical structure, and the inner cavity is preferably a cylindrical cavity, so that the inner cavity is adapted to the monolithic catalyst 5.

[0078] At least one end wall of the catalyst mounting sleeve 1 is provided with a mesh plate 11 for air permeability, and the mesh plate 11 is used to hold the monolithic catalyst 5 or the granular catalyst 6, the hollow filler 2 and the solid filler 3, so as to prevent them from sliding out of the end of the catalyst mounting sleeve 1.

[0079] In one of the embodiments, the size of the hollow filler 2 and the solid filler 3 is consistent with the size of the single particle 61 of the granular catalyst 6, and thus arranged, on the one hand, it can facilitate the mixing of the hollow filler 2, the solid filler 3 and the particle 61 of the granular catalyst 6, so that several particles 61 of the granular catalyst 6 are uniformly distributed in the inner cavity of the catalyst mounting sleeve 1, and on the other hand, it can effectively simulate the spacing between the particles 61, and also can ensure the size, so as to facilitate the accuracy of the flow resistance adjustment.

[0080] In one of the embodiments, the hollow filler 2 includes two oppositely arranged annular rings 21 and a plurality of connecting columns 22 arranged in a ring array between the two annular rings 21 and connecting the two annular rings 21, and thus arranged, the hollow filler 2 can effectively flow the gas, while ensuring the simple structure.

[0081] In one of the embodiments, the flow resistance testing device includes an inner hollow cylinder, one end of the cylinder is provided with a gas injection device, and the other end is provided with a gas outlet, and a pressure sensor is arranged at the gas outlet, when testing the flow resistance of the monolithic catalyst 5, the monolithic catalyst 5 is embedded and placed in the hollow, and the gas injection device is used for gas injection, the pressure sensor detects the pressure at the gas outlet, and finally the flow resistance of the monolithic catalyst 5 can be calculated according to the pressure difference between the pressure of the gas injection device and the pressure sensor, and when testing the flow resistance of the size equivalent granular catalyst, the catalyst mounting sleeve 1 of the size equivalent granular catalyst is embedded and placed in the hollow, and the gas injection device is used for gas injection, the pressure sensor detects the pressure at the gas outlet, and finally the flow resistance of the size equivalent granular catalyst can be calculated according to the pressure difference between the pressure of the gas injection device and the pressure sensor.

[0082] In one of the embodiments, the catalytic performance testing device 4 comprises a reactor 43 for mounting the monolithic catalyst 5 or the full equivalent granular catalyst, the reactor 43 is used to form a gas decomposition site, the reactor 43 is internally provided with a gas flow channel, the monolithic catalyst 5 or the full equivalent granular catalyst is detachably arranged in the gas flow channel, one side of the reactor 43 is provided with a gas supply device for injecting gas, such as N2O, into one end of the flow channel, and the other side is provided with a gas chromatograph 44 for detecting the residual content of the gas, such as the residual content of N2O, so as to test the decomposition performance of the monolithic catalyst 5 or the full equivalent granular catalyst on N2O, and obtain the catalytic performance of the monolithic catalyst 5 and the granular catalyst 6.

[0083] Preferably, the gas supply device comprises a gas cylinder 41 for providing the test gas, such as N2O, and a flow meter 42 for controlling the gas flow. Preferably, the reactor 43 is arranged in a heating furnace 45 for heating the reactor 43 to decompose the gas. Preferably, the gas chromatograph 44 is connected with a computer 46 for processing the test data.

[0084] The following takes the N2O decomposition test as an example for testing:

[0085] The size of the monolithic catalyst 5 is as shown in Figure 4 , the mass thereof is 1.4538g, the loading rate is 2.93%, and the calculated loading amount is 0.0422g; the flow resistance of the monolithic catalyst 5 is 3.87Kpa tested by the flow resistance testing device.

[0086] The size of the granular catalyst 6 is as shown in Figure 10 and Figure 11 , the loading rate is 15.04%, the loading amount of the monolithic catalyst 5 is 0.0422g, and the calculated mass required for the granular catalyst 6 is 0.2806g.

[0087] The actual mass of the granular catalyst 6 is 0.2695g, and finally 0.2014g of the hollow filler 2 and 0.2076g of the solid filler 3 are integrally added into the catalyst mounting sleeve 1, and finally the flow resistance of the full equivalent granular catalyst is 3.59Kpa. The size of the hollow filler 2 is as shown in Figure 8 and Figure 9 , the size of the solid filler 3 is as shown in Figure 11 and Figure 12 , and the size of the catalyst mounting sleeve 1 is as shown in Figure 6 .

[0088] The gas flow of the gas supply device is 20L / min.

[0089] The full equivalent granular catalyst and the monolithic catalyst 5 are respectively tested by the catalytic performance testing device 4, and the N2O catalytic decomposition performance data of the monolithic catalyst, the full equivalent granular catalyst, the pure filler and the non-loaded monolithic catalyst with temperature change are obtained. Figure 15

[0090] The above is only the embodiment of the present application, and does not limit the present application. Any person skilled in the art can make many possible changes, modifications or modifications to the technical solutions of the present application without departing from the scope of the technical solutions of the present application, and the equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall fall within the scope of protection of the technical solutions of the present application.​

Claims

1. A method for testing an integrated catalyst equivalent to a particulate catalyst, characterized by, The method comprises the following steps: S1, obtaining a monolithic catalyst (5) and a granular catalyst (6) with the same active ingredient load; S2, obtaining a full equivalent granular catalyst; S21, testing the flow resistance of the monolithic catalyst (5) using a flow resistance testing device to obtain the flow resistance of the monolithic catalyst (5); S22, placing the granular catalyst (6) into the inner cavity of a catalyst mounting sleeve (1) with the same size as the monolithic catalyst (5), and adding hollow fillers (2) and solid fillers (3) into the inner cavity of the catalyst mounting sleeve (1) until the granular catalyst (6), the hollow fillers (2) and the solid fillers (3) fill the catalyst mounting sleeve (1), and the catalyst mounting sleeve (1), the granular catalyst (6), the hollow fillers (2) and the solid fillers (3) form a size equivalent granular catalyst; S23, testing the flow resistance of the size equivalent granular catalyst using the flow resistance testing device, adjusting the proportion of the hollow fillers (2) and the solid fillers (3) until the flow resistance of the size equivalent granular catalyst is consistent with that of the monolithic catalyst (5), and obtaining a full equivalent granular catalyst; S3, testing the catalytic performance of the monolithic catalyst (5) and the full equivalent granular catalyst, and comparing the performance of the monolithic catalyst (5) and the granular catalyst (6).

2. The method of claim 1, wherein the bulk catalyst is equivalent to the particulate catalyst. The S21 further comprises: placing the monolithic catalyst (5) into the inner cavity of the catalyst mounting sleeve (1) with the same size as the monolithic catalyst (5); obtaining the flow resistance of the monolithic catalyst (5) comprises the flow resistance of the catalyst mounting sleeve (1).

3. The method of claim 1, wherein the bulk catalyst is equivalent to the particulate catalyst. The S23 further comprises: obtaining the flow resistance of the catalyst mounting sleeve (1); the flow resistance of the size equivalent granular catalyst is the total flow resistance minus the flow resistance of the catalyst mounting sleeve (1).

4. The method for testing equivalence of a monolithic catalyst to a particulate catalyst according to any one of claims 1 to 3, wherein the monolithic catalyst is a catalyst for purifying exhaust gas of an internal combustion engine. The obtaining of the monolithic catalyst (5) and the granular catalyst (6) with the same active ingredient load comprises: calculating the active ingredient load of the monolithic catalyst (5) according to the mass and the loading rate of the monolithic catalyst (5); calculating the mass of the granular catalyst (6) according to the loading rate of a single particle (61) in the granular catalyst (6) and the active ingredient load of the monolithic catalyst (5); the mass of the granular catalyst (6) has the same active ingredient load as the monolithic catalyst (5).

5. The method of testing a monolithic catalyst equivalent to a particulate catalyst according to any one of claims 1 to 3, wherein the monolithic catalyst is a honeycomb catalyst. The testing of the catalytic performance of the monolithic catalyst (5) and the full equivalent granular catalyst comprises: performing N2O decomposition test on the monolithic catalyst (5) and the full equivalent granular catalyst.

6. An apparatus for testing the equivalence of a monolithic catalyst to a particulate catalyst, characterized by, The method for testing the equivalence of the monolithic catalyst and the granular catalyst according to any one of claims 1-5 comprises a catalyst mounting sleeve (1), hollow fillers (2), solid fillers (3), a flow resistance testing device and a catalytic performance testing device (4).

7. The integrated catalyst versus particulate catalyst equivalent testing apparatus of claim 6 wherein, The catalyst mounting sleeve (1) is internally hollow and has an inner cavity with the same size as the monolithic catalyst (5). At least one end wall of the catalyst mounting sleeve (1) is provided with a mesh plate (11) for air permeation.

8. The integrated catalyst versus particulate catalyst equivalent testing apparatus of claim 7, wherein, The hollow filling body (2) and the solid filling body (3) have the same outer dimension as that of a single particle (61) of the particulate catalyst (6).

9. The integrated catalyst versus particulate catalyst equivalent testing apparatus of claim 8, wherein, The hollow filling body (2) comprises two oppositely arranged annular rings (21) and a plurality of connecting columns (22) arranged between the two annular rings (21) and connecting the two annular rings (21) in a ring array.

10. The monolithic catalyst versus particulate catalyst equivalent testing apparatus of any one of claims 6-9, wherein, The catalytic performance testing device (4) comprises a reactor (43) for mounting the monolithic catalyst (5) or a full equivalent particulate catalyst, one side of the reactor (43) is provided with a gas supply device, and the other side is provided with a gas chromatograph (44).

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