Device and method for testing wear resistance of cement denitration catalyst

Abstract

This invention discloses a device and method for testing the wear resistance of cement denitrification catalysts, comprising: a blower for providing flowing air for simulated testing; a feeding unit including a hopper, a screw conveyor, and a solenoid valve, wherein the inlet of the screw conveyor is connected to the hopper, and the outlet of the screw conveyor is connected to the solenoid valve, and the hopper stores abrasive; a cyclone separator for separating and collecting the abrasive in the flowing air; a pipeline connected at both ends to the blower and the cyclone separator respectively, and the feeding unit connected to the middle of the pipeline, wherein a control chamber and a test chamber are respectively arranged on the pipeline; a detection unit for detecting the flowing gas; and a control unit electrically connected to the blower, the feeding unit, the cyclone separator, and the detection unit. By setting the control chamber and the test chamber in series, the problems of existing parallel-connected testing devices, such as difficulty in synchronizing operating conditions, complex operation, and additional errors introduced by dynamic changes in branch resistance, can be solved.

Description

Technical Field

[0001] This invention relates to the field of air pollutant control and monitoring technology, and in particular to a device and method for testing the wear resistance of cement denitrification catalysts. Background Technology

[0002] Compared with other industrial process waste gases, cement kiln flue gas is characterized by high dust content and small fly ash particle size. The high concentration of fly ash particles in the flue gas causes severe erosion and wear on SCR denitrification catalysts. Catalyst wear damages its physical structure and cannot be restored to its activity through regeneration, making wear resistance a crucial indicator of catalyst performance. Therefore, conducting accurate wear resistance tests on cement denitrification catalysts is of great significance for catalyst quality control and engineering selection.

[0003] Currently, SCR denitrification catalyst wear strength testing devices typically consist of main components such as a fan, airflow regulation device, automatic feeder, sample chamber, and wear agent collection device. In existing testing devices, the control sample chamber and the test sample chamber can be arranged in series or in parallel. The parallel testing method is widely used because it allows for simultaneous wear tests on both control and test samples. A typical parallel testing device includes at least one control airflow path and at least one test airflow path, with each testing device connected in parallel. However, the parallel testing method has the following significant drawbacks in practical applications: First, it is difficult to synchronize the operating conditions of the two independent air ducts. Parallel testing requires two independent air duct systems—a clean air duct and a sand-containing air duct. It is difficult to achieve complete consistency in the airflow, duct resistance, and internal vortex state of the two ducts, resulting in inconsistent airflow erosion benchmarks. This makes it impossible to accurately deduct the wear caused by pure airflow erosion on the catalyst, leading to large errors and poor repeatability in the wear resistance test results.

[0004] Secondly, the system is complex and difficult to control. Parallel testing requires two independent flow control valves, two heating and insulation systems, and two dust removal and filtration devices. The number of valves, pipelines, and instruments increases exponentially, making synchronous control of multiple parameters extremely difficult. During long-term operation, problems such as airflow drift and temperature deviation are prone to occur.

[0005] Third, the dynamic changes in branch resistance introduce additional errors. As the test progresses, wear and filter bag blockage in both samples will continuously change the resistance characteristics of their respective branches. Operators need to repeatedly adjust the valves in both branches to balance the airflow, which introduces additional errors due to human operation, resulting in high data dispersion for parallel samples in the same batch. Summary of the Invention

[0006] To address the above shortcomings, this invention provides a test device for the wear resistance of cement denitrification catalysts. By setting up a control chamber and a test chamber in series, it can solve the problems of difficulty in synchronizing the operating conditions of existing parallel test devices and the introduction of additional errors by dynamic changes in branch resistance. The specific technical solution is as follows: A test device for the wear resistance of cement denitrification catalyst, comprising: Blower, used to provide flowing air for simulation testing; The feeding unit includes a hopper, a screw conveyor, and a solenoid valve. The feed inlet of the screw conveyor is connected to the hopper, and the discharge outlet of the screw conveyor is connected to the solenoid valve. The hopper stores an abrasive. Cyclone separators are used to separate and collect abrasives in flowing air; The pipeline is connected to a blower and a cyclone separator at both ends, and the feeding unit is connected to the middle of the pipeline. A comparison chamber and a test chamber are respectively provided on the pipeline. The comparison chamber is located between the blower and the feeding unit, and the test chamber is located between the feeding unit and the cyclone separator. The solenoid valve is connected to the pipeline. The detection unit includes an anemometer, a pressure gauge, and a flow meter, all of which are installed on the pipeline for detecting flowing gas. The control unit is electrically connected to the blower, the feeding unit, the cyclone separator, and the detection unit.

[0007] Preferably, the comparison chamber and the test chamber are arranged in series on the pipeline.

[0008] Preferably, the flow meter is installed between the blower and the comparison chamber, the anemometer is installed between the comparison chamber and the feeding unit, and there are multiple pressure gauges, which are distributed at both ends of the comparison chamber and the test chamber.

[0009] Preferably, the comparison chamber has the same structure as the test chamber. The comparison chamber includes a chamber body, a chamber cover, and locking components. The chamber body has an air inlet and an air outlet at both ends that match the diameter of the pipeline. The air outlet and the air inlet are connected to the pipeline. The top of the chamber body has an opening for placing and removing samples. Multiple locking components are installed on the outer side walls of the horizontal sides of the chamber body. The chamber cover is fixed to the top of the chamber body by the locking components to close the opening.

[0010] Preferably, the control unit includes a control cabinet, and the control cabinet is equipped with a display screen, which is used to integrate and display the parameters of the blower, the feeding unit and the detection unit.

[0011] Preferably, the blower outputs an air velocity of 14.5±0.5m / s and an air volume of 90-350m³ / h, and the feeding unit has a feeding speed of 30-300g / min.

[0012] Preferably, the locking component includes a hinge, a pull rod, and a pressure block. One end of the pull rod is mounted on the outer wall of the compartment via the hinge, and the pressure block is threaded to the other end of the pull rod. Pressure plates are provided on both sides of the compartment cover, and grooves that cooperate with the pull rod are provided on the pressure plates.

[0013] Preferably, the control unit further includes an alarm, which is electrically connected to the blower, the feeding unit, and the detection unit. When the data signal electrically transmitted by the blower, the feeding unit, and the detection unit fails to reach the set value, the alarm will sound an alarm.

[0014] Preferably, the outer wall of the pipeline is covered with an insulation layer.

[0015] A method for testing the wear resistance of a cement denitrification catalyst, using the aforementioned abrasion resistance testing device for a cement denitrification catalyst: S1: Open the comparison chamber and the test chamber, put the comparison sample and the test sample into the comparison chamber and the test chamber respectively, and then close the comparison chamber and the test chamber; S2: Place abrasive in the hopper; S3: Set the blower speed and air volume, as well as the feeding speed of the feeding unit, on the control unit; S4: The blower, feeding unit and cyclone separator are started by the control unit, and the control unit automatically records and saves the data transmitted by the detection unit; S5: After the test is completed, the control unit shuts down the blower, feeding unit and cyclone separator, and then the comparison sample and test sample can be taken out for analysis and comparison.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In the testing process of this invention, the same airflow first passes through the blank control sample, generating only pure airflow erosion weight loss. The airflow then carries quartz sand and impacts the test sample. The total weight loss = airflow erosion + quartz sand particle abrasion. The wind speed, temperature, turbulence, and wind pressure of the two sets of samples are completely consistent. The only variable is whether or not they come into contact with quartz sand. The pure quartz sand particle abrasion amount can be obtained by directly subtracting the weight loss of the control sample from the weight loss of the test sample, and the abrasion resistance calculation has no systematic bias. This invention solves the defects of existing parallel design control and test chambers: two independent air ducts, clean air and sand-containing air, and airflow volume, pipe resistance, and eddy currents are difficult to synchronize completely. The airflow erosion benchmark is inconsistent, making it impossible to accurately deduct wind erosion, resulting in large errors and poor repeatability in the abrasion resistance test results.

[0017] 2. This invention consists of only one set of fan, one set of feeder, and one set of dust removal backend. Compared with the existing test devices with parallel design of comparison chamber and test chamber, it has fewer parts, thus reducing the complexity of system structure and the difficulty of multi-parameter coordinated control, and reducing the risk of leakage, blockage, drift and control failure caused by the increase in the number of parts. This improves the stability and reliability of long-term equipment operation, while reducing the cost of equipment manufacturing, maintenance and calibration.

[0018] 3. In this invention, the series-connected control chamber and test chamber form a single resistance loop with a constant fan load. Only single-point monitoring of flow rate and pressure is required, resulting in minimal parameter fluctuations during the test. In contrast, in existing parallel-connected control and test chambers, wear and filter bag blockage in the two sample paths continuously alter the branch resistance, necessitating repeated adjustments of the two valves to balance the airflow, introducing additional errors and resulting in high data dispersion for parallel samples in the same batch. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the testing device structure of the present invention; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a front view of the testing device of the present invention; Figure 4 This is a flowchart of the testing method of the present invention.

[0021] 1. Blower; 2. Feeding unit; 3. Cyclone separator; 4. Piping; 5. Comparison chamber; 51. Chamber body; 52. Chamber cover; 53. Hinge; 54. Tie rod; 55. Pressure block; 56. Pressure plate; 6. Test chamber; 7. Anemometer; 8. Pressure gauge; 9. Flow meter. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Next, refer to Figures 1 to 4 The working principle of this embodiment will be described in detail to enable those skilled in the art to better understand the present invention: A test device for the wear resistance of cement denitrification catalyst, comprising: Blower 1 is used to provide flowing air for the simulation test. It adopts a centrifugal blower with variable frequency adjustment, which can flexibly adjust the wind speed and flow rate of the output airflow according to the test requirements. It accurately simulates the working environment of flue gas carrying fly ash particles to wash over the catalyst in the actual production process of cement kiln, effectively ensuring the consistency between the test conditions and the actual application scenario, and improving the reliability and reference value of the test results.

[0026] Feeding unit 2 includes a hopper, a screw conveyor, and a solenoid valve. The screw conveyor's inlet is connected to the hopper, and its outlet is connected to the solenoid valve. The hopper stores abrasive. The screw conveyor can precisely control the output of abrasive per unit time according to the control unit settings. The solenoid valve controls the opening and closing of the feeding path, ensuring stable and uniform delivery of abrasive to test pipeline 4. This accurately simulates the actual working condition of continuous and uniform flow of fly ash particles in cement kiln flue gas, avoiding the impact of feeding speed fluctuations and uneven material distribution on the stability and accuracy of test results.

[0027] Cyclone separator 3 is used to separate and collect abrasives in flowing air. The separated abrasives can be centrally recovered through the bottom collection chamber, preventing dust pollution caused by abrasives being discharged with the airflow. Furthermore, it allows for the statistical analysis of the total amount of abrasives used in this test, providing a reference data for the subsequent quantitative calculation of catalyst wear. The outlet of cyclone separator 3 is also connected to a dust removal device to completely remove dust from the gas, preventing pollution to the control system.

[0028] Pipeline 4 is connected to blower 1 and cyclone separator 3 at both ends, and feeding unit 2 is connected to the middle of pipeline 4. A control chamber 5 and a test chamber 6 are respectively installed on pipeline 4, arranged in series. The series-connected control chamber 5 and test chamber 6 form a single resistance loop, with a constant blower load, requiring only single-point monitoring of flow rate and pressure, resulting in minimal parameter fluctuations during the test. In contrast, the existing parallel-connected control chamber 5 and test chamber 6 suffer from wear and filter bag blockage, which continuously alters the branch resistance, requiring repeated adjustment of the two valves to balance the airflow, introducing additional errors and resulting in high data dispersion for parallel samples in the same batch. Control chamber 5 is located between blower 1 and feeding unit 2, and test chamber 6 is located between feeding unit 2 and cyclone separator 3. A solenoid valve is connected to pipeline 4. Pipeline 4 is made of high-temperature resistant and wear-resistant metal tubing with a uniform inner diameter, ensuring stable airflow velocity inside pipeline 4 and preventing flow field disturbances caused by pipe diameter changes, which could interfere with the scouring effect and affect the accuracy of the test results.

[0029] The detection unit includes an anemometer 7 (H8120B), a pressure gauge 8 (SMC, ISE30A-01-FL), and a flow meter 9 (intelligent vortex flow meter 9, DN65 temperature and pressure compensated [4-20mA output / 24V power supply]). The anemometer 7, pressure gauge 8, and flow meter 9 are all installed on pipeline 4 to detect the flowing gas. Each detection element converts the real-time gas parameters collected in pipeline 4 into electrical signals and feeds them back to the control unit. This facilitates the control unit's monitoring of data changes and allows for real-time adjustment of the blower 1's output power and the feeding rate of the feeding unit 2 according to preset test conditions. This ensures that the airflow velocity and abrasive concentration in pipeline 4 remain stable within the set range during the test, preventing fluctuations in operating conditions from affecting the reliability of the test results. The anemometer 7 is used to monitor the actual flow velocity of the airflow inside the pipe 4, the pressure gauge 8 is used to collect the gas pressure change data inside the pipe 4, and the flow meter 9 is used to measure the total amount of gas flowing through the cross-section of the pipe 4 per unit time. Multiple parameters are cross-checked to accurately record the operating conditions throughout the test, providing accurate and reliable raw data support for subsequent calculations of cement denitrification catalyst wear and wear resistance rating. This invention uses only one fan, one feeder, and one dust removal backend. Compared to existing parallel design test devices with comparison chamber 5 and test chamber 6, it has fewer components, thus reducing system structural complexity and the difficulty of multi-parameter coordinated control. It also reduces the risk of leakage, blockage, drift, and control failure caused by the increased number of components, thereby improving the long-term stability and reliability of the equipment while reducing manufacturing, maintenance, and calibration costs.

[0030] The control system PLC of the control unit is an Omron controller. The control unit is electrically connected to blower 1, feeding unit 2, cyclone separator 3, and detection unit. It can receive multi-dimensional electrical signals such as gas velocity, pressure, and flow rate in pipeline 4 from the detection unit in real time, and dynamically control the working status of each unit based on preset operating parameter thresholds. At the same time, the control unit can synchronously record and store the operating status of each unit and all operating parameters collected by the detection unit throughout the entire test cycle, providing complete and traceable data support for subsequent catalyst wear calculation and wear resistance level evaluation. It can also automatically organize and generate standardized test data reports according to test requirements, effectively improving the efficiency and accuracy of test result analysis.

[0031] In the testing process of this invention, the same airflow first passes through the blank control sample, generating only pure airflow erosion weight loss. The airflow then carries quartz sand and impacts the test sample. The total weight loss = airflow erosion + quartz sand particle abrasion. Since the control sample has a very small obstruction effect on the flowing air, the wind speed, temperature, turbulence, and wind pressure of the two sets of samples are basically the same. The only variable is whether it comes into contact with quartz sand. The pure quartz sand particle abrasion amount can be obtained by directly subtracting the control sample weight loss from the test sample weight loss, and the abrasion resistance calculation has no systematic bias. This invention solves the defects of the existing parallel design of control chamber 5 and test chamber 6: two independent air ducts, the airflow of clean air and sand-containing air, the resistance of pipe 4, and the eddy current are difficult to synchronize completely, the airflow erosion benchmark is inconsistent, it is impossible to accurately deduct wind erosion, and the abrasion resistance test results have large errors and poor repeatability.

[0032] The flow meter 9 is installed between the blower 1 and the comparison chamber 5, the anemometer 7 is installed between the comparison chamber 5 and the feeding unit 2, and there are multiple pressure gauges 8, which are distributed at both ends of the comparison chamber 5 and the test chamber 6.

[0033] The control chamber 5 has the same structure as the test chamber 6. Control chamber 5 includes a chamber body 51, a cover 52, and locking components. The chamber body 51 has an air inlet and an air outlet at both ends, matching the diameter of the pipe 4, which are connected to the pipe 4. The top of the chamber body 51 has an opening for placing and removing samples. Multiple locking components are installed on the outer walls of the horizontal sides of the chamber body 51. The cover 52 is fixed to the top of the chamber body 51 by the locking components to close the opening. The locking components allow for quick opening and closing of the cover 52, facilitating sample access and effectively reducing test preparation time. The inner cavity of the chamber body 51 has a positioning groove that matches the contour of the sample to be tested, fixing the sample in a preset impact position to prevent displacement during testing. This ensures that the erosion angle and impact position always meet the test requirements, further improving test accuracy. A sealing rubber strip is embedded between the mating surfaces of the cover 52 and the opening of the chamber body 51 to prevent air leakage in the chamber body 51, prevent abnormal fluctuations in air pressure and air velocity in the pipeline 4, and ensure stable test environment conditions.

[0034] The control unit includes a control cabinet equipped with a display screen (Kunlun Tongtai Touch Screen, TPC1071Gt). The display screen integrates and displays parameters for blower 1, feeding unit 2, and the detection unit. Test personnel can uniformly input test parameters and adjust the operating status of each unit through the display screen, eliminating the need for separate debugging across multiple devices, effectively simplifying the operation process and improving parameter setting efficiency. The control cabinet integrates a data storage module that can record various test data throughout the testing process, such as wind speed, wind pressure, feeding speed, and catalyst quality changes. It supports data export and traceability, facilitating subsequent review and analysis of test results. Furthermore, the control unit is equipped with an alarm module. When abnormal conditions such as prolonged abnormal wind pressure, feeding interruption, or temperature deviation from the set range occur during testing, the alarm module will immediately trigger audible and visual alerts. It can also automatically adjust the operating status or cut off the power supply to the corresponding unit based on the fault level, preventing equipment damage or invalid tests, further improving the stability and reliability of the testing process.

[0035] The blower 1 outputs an air velocity of 14.5±0.5 m / s and an air volume of 90-350 m³ / h, while the feeding unit 2 has a feeding speed of 30-300 g / min. These parameter ranges accurately reproduce the wear environment under actual flue gas conditions in cement kilns, closely matching the actual stress and wear state of cement denitrification catalysts used on-site. This effectively ensures the consistency between test results and the actual service performance of the catalyst, significantly enhancing the reference value of the test results. Furthermore, the test parameters can be flexibly adjusted within the above range according to the type and specifications of the catalyst under test and the differences in operating conditions of the actual application scenario. This adapts to the wear resistance testing needs of cement denitrification catalysts with different structural types, such as honeycomb and plate types, broadening the applicability of the device.

[0036] The locking mechanism includes a hinge 53, a pull rod 54, and a pressure block 55. One end of the pull rod 54 is mounted on the outer wall of the compartment 51 via the hinge 53. The pressure block 55 is threadedly connected to the other end of the pull rod 54. Pressure plates 56 are provided on both sides of the compartment cover 52, and grooves on the pressure plates 56 are provided to mate with the pull rod 54. When it is necessary to fix the compartment cover 52 to the compartment 51, the operator can place the compartment cover 52 in the corresponding position on the compartment 51, then rotate the pull rod 54 until it is embedded in the groove, and then rotate and press it until it contacts the pressure plate 56 and generates a certain preload. At this point, the installation of the compartment cover 52 is completed. To remove the compartment cover 52, simply reverse the above steps.

[0037] The outer wall of the pipeline 4 is covered with an insulation layer to ensure that the temperature of the control chamber 5 and the test chamber 6 is consistent when they are subjected to airflow. This can reduce the interference of external ambient temperature fluctuations on the temperature of the test airflow in the pipeline 4 and avoid the wear rate deviation between the control chamber 5 and the test chamber 6 due to temperature difference.

[0038] A method for testing the wear resistance of a cement denitrification catalyst, using the aforementioned abrasion resistance testing device for a cement denitrification catalyst: S1: First, open the chamber cover 52 of the test device, and place the pre-prepared comparison sample and the test sample into the comparison chamber 5 and the test chamber 6 of the device respectively. After the sample placement is completed, use the locking device to firmly fix the chamber cover 52 to the top opening of the chamber body 51, and completely seal the opening of the chamber body 51 to prevent leakage during the test. S2: According to the dosage requirements of this test, put the abrasive used in the test into the hopper of the device to complete the material preparation work before the test; S3: On the control unit of the test device, according to the preset test standard requirements, the output wind speed and output air volume of the blower 1 and the feeding speed of the feeding unit 2 are set respectively. S4: After confirming that all parameters are correct, start blower 1, feeding unit 2 and cyclone separator 3 simultaneously through the control unit. During the test run, the control unit will automatically record and save all kinds of test data transmitted in real time by the detection unit. S5: After the preset test duration is reached and the test is completed, the control unit shuts down the blower 1, the feeding unit 2 and the cyclone separator 3. After the device has completely stopped running and the internal state has stabilized, the comparison sample and the test sample can be taken out to conduct an analysis and comparison of their wear conditions.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for testing the wear resistance of cement denitrification catalyst, characterized in that, include: Blower (1), used to provide flowing air for simulation testing; The feeding unit (2) includes a hopper, a screw conveyor and a solenoid valve. The feed inlet of the screw conveyor is connected to the hopper, and the discharge outlet of the screw conveyor is connected to the solenoid valve. The hopper stores abrasive. Cyclone separator (3) is used to separate and collect abrasives in flowing air; Pipeline (4), the two ends of which are connected to blower (1) and cyclone separator (3) respectively, feeding unit (2) is connected to the middle of pipeline (4), comparison chamber (5) and test chamber (6) are respectively provided on pipeline (4), comparison chamber (5) is located between blower (1) and feeding unit (2), test chamber (6) is located between feeding unit (2) and cyclone separator (3), and solenoid valve is connected to pipeline (4); The detection unit includes an anemometer (7), a pressure gauge (8), and a flow meter (9). The anemometer (7), pressure gauge, and flow meter (9) are all installed on the pipeline (4) for detecting the flowing gas. The control unit is electrically connected to the blower (1), the feeding unit (2), the cyclone separator (3), and the detection unit.

2. The abrasion resistance testing device for cement denitrification catalyst according to claim 1, characterized in that, The comparison chamber (5) and the test chamber (6) are arranged in series on the pipeline (4).

3. The abrasion resistance testing device for cement denitrification catalyst according to claim 1, characterized in that, The flow meter (9) is installed between the blower (1) and the comparison chamber (5), the anemometer (7) is installed between the comparison chamber (5) and the feeding unit (2), and there are multiple pressure gauges (8), which are distributed at both ends of the comparison chamber (5) and the test chamber (6).

4. The abrasion resistance testing device for cement denitrification catalyst according to claim 1, characterized in that, The comparison chamber (5) has the same structure as the test chamber (6). The comparison chamber (5) includes a chamber body (51), a chamber cover (52) and locking components. The two ends of the chamber body (51) are respectively provided with an air inlet and an air outlet that match the diameter of the pipeline (4). The air outlet and the air inlet are respectively connected to the pipeline (4). The top of the chamber body (51) is provided with an opening for placing samples. Multiple locking components are respectively installed on the outer side walls of the horizontal sides of the chamber body (51). The chamber cover (52) is fixed to the top of the chamber body (51) by the locking components to close the opening.

5. The abrasion resistance testing device for cement denitrification catalyst according to claim 1, characterized in that, The control unit includes a control cabinet, on which a display screen is provided. The display screen is used to integrate and display the parameters of the blower (1), the feeding unit (2), and the detection unit.

6. The abrasion resistance testing device for a cement denitrification catalyst according to claim 1, characterized in that, The blower (1) outputs a wind speed of 14.5±0.5m / s and an air volume of 90-350m³ / h, and the feeding unit (2) has a feeding speed of 30-300g / min.

7. The abrasion resistance testing device for a cement denitrification catalyst according to claim 4, characterized in that, The locking component includes a hinge (53), a pull rod (54), and a pressure block (55). One end of the pull rod (54) is mounted on the outer wall of the compartment (51) via the hinge (53). The pressure block (55) is threaded to the other end of the pull rod (54). Pressure plates (56) are provided on both sides of the compartment cover (52). The pressure plates (56) have grooves that cooperate with the pull rod (54).

8. The abrasion resistance testing device for cement denitrification catalyst according to claim 1, characterized in that, The control unit also includes an alarm, which is electrically connected to the blower (1), the feeding unit (2) and the detection unit. When the data signal electrically transmitted by the blower (1), the feeding unit (2) and the detection unit fails to reach the set value, the alarm will sound an alarm.

9. The abrasion resistance testing device for a cement denitrification catalyst according to claim 1, characterized in that, The outer wall of the pipeline (4) is covered with an insulation layer.

10. A method for testing the wear resistance of a cement denitrification catalyst, using the wear resistance testing device for a cement denitrification catalyst as described in any one of claims 1-9, characterized in that: S1: Open the comparison chamber (5) and the test chamber (6), put the comparison sample and the test sample into the comparison chamber (5) and the test chamber (6) respectively, and then close the comparison chamber (5) and the test chamber (6). S2: Place abrasive in the hopper; S3: Set the wind speed and air volume of the blower (1) and the feeding speed of the feeding unit (2) on the control unit; S4: The blower (1), feeding unit (2) and cyclone separator (3) are started by the control unit. The control unit automatically records and saves the data transmitted by the detection unit. S5: After the test is completed, the control unit shuts down the blower (1), the feeding unit (2) and the cyclone separator (3), and then the comparison sample and the test sample can be taken out for analysis and comparison.

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