Device for measuring catalytic efficiency of ammonia decomposition catalyst

Abstract

The utility model relates to the technical field of ammonia decomposition detection, and discloses an ammonia decomposition catalyst catalytic efficiency measuring device which comprises a reaction tank assembly, a controller is arranged on the outer side of the reaction tank assembly, the lower end of the reaction tank assembly is fixedly connected with a support, and the upper end of the reaction tank assembly is fixedly connected with an air inlet pipe. According to the device for measuring the catalytic efficiency of the ammonia decomposition catalyst, flow monitoring can be carried out through the gas inlet valve and the gas inlet flow meter when ammonia gas passes through the gas inlet pipe, the gas inlet valve is closed by the controller when the test quantity is reached, the test accuracy is conveniently controlled, and the catalyst can be heated through the heater to enable ammonia to react and decompose; when the test time is up, the decomposed mixed gas can be quantitatively pumped into the measuring tank assembly through the gas outlet valve, the gas outlet flow meter and the gas pump, and the nitrogen concentration and hydrogen concentration of the decomposed mixed gas can be detected through the nitrogen concentration sensor and the hydrogen concentration sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia decomposition detection, and specifically relates to a device for measuring the catalytic efficiency of an ammonia decomposition catalyst. Background Technique

[0002] Ammonia decomposition is an important reaction, which usually involves using a catalyst to decompose ammonia into nitrogen and hydrogen. This reaction has extensive applications in industry and laboratories. In order to improve the efficiency and selectivity of the ammonia decomposition reaction, a large amount of research and development has been carried out to improve the performance of the catalyst. This includes selecting and optimizing different types of catalysts, such as iron, nickel, platinum, titanium, etc., to increase the rate and selectivity of ammonia decomposition. Measurement is required when improving the test of catalytic efficiency.

[0003] Chinese Utility Model Patent Publication No.: CN218202205U, discloses: an ammonia decomposition hydrogen production device, which solves the problem that the airway of the currently used ammonia decomposition hydrogen production device is very short, the fluidity of ammonia is very fast, resulting in a short reaction time of ammonia in the decomposition chamber and a short contact time with the catalyst, incomplete reaction, and waste of resources. This ammonia decomposition hydrogen production device is not convenient for detecting the catalytic efficiency. Content of the Utility Model

[0004] Technical problems to be solved: Aiming at the deficiencies of the prior art, the utility model provides a device for measuring the catalytic efficiency of an ammonia decomposition catalyst to solve the problems proposed in the above background.

[0005] Technical Solution

[0006] To achieve the above object, the utility model provides the following technical solution: A device for measuring the catalytic efficiency of an ammonia decomposition catalyst, including a reaction tank assembly, a controller is arranged outside the reaction tank assembly, a support is fixedly connected to the lower end of the reaction tank assembly, an inlet pipe is fixedly connected to the upper end of the reaction tank assembly, an inlet valve is arranged outside the inlet pipe, an inlet flowmeter is arranged outside the inlet pipe, an outlet pipe is fixedly connected to the outside of the reaction tank assembly, an outlet valve is arranged outside the outlet pipe, an outlet flowmeter is arranged outside the outlet pipe, an air pump is fixedly connected to the end of the outlet pipe far away from the reaction tank assembly, a connecting pipe is fixedly connected to the left side of the air pump, and a measuring tank assembly is fixedly connected to the upper end of the connecting pipe;

[0007] The reaction tank assembly includes a reaction tank body, a support column, a heater and a catalyst. A support column is fixedly installed inside the reaction tank body, a heater is fixedly installed outside the support column, and a catalyst is installed at the upper end of the heater;

[0008] The measurement tank assembly includes a measurement tank body, a top cover, a support plate, a nitrogen concentration sensor, and a hydrogen concentration sensor. A top cover is provided at the upper end of the measurement tank body. A support plate is fixedly connected to the lower end of the top cover. A nitrogen concentration sensor is fixedly installed on the left side of the support plate, and a hydrogen concentration sensor is fixedly installed on the right side of the support plate.

[0009] Preferably, a plurality of supports are fixedly connected to the lower end of the reaction tank assembly, and the intake valve is located in front of the intake flowmeter.

[0010] Through the above technical solution, it is possible to prevent the remaining gas after the intake valve is closed from not being detected by the intake flowmeter, which is more accurate.

[0011] Preferably, two catalysts are fixedly connected to the outside of the support column, and catalysts are fixedly installed at both the upper and lower ends of the heater.

[0012] Through the above technical solution, the two catalysts can accelerate the reaction time of ammonia decomposition and improve the efficiency.

[0013] Preferably, the support column is located at the central position of the reaction tank body, and the outlet pipe is fixedly connected between the reaction tank assembly and the air pump.

[0014] Through the above technical solution, the air pump can accelerate the gas flow rate.

[0015] Preferably, the outlet valve is located to the left of the outlet flowmeter, and the connecting pipe is fixedly connected between the air pump and the measurement tank assembly.

[0016] Through the above technical solution, it is convenient to pump the decomposed mixed gas into the measurement tank assembly for detection.

[0017] Preferably, the heater, the intake valve, the intake flowmeter, the outlet valve, the outlet flowmeter, the air pump, the gas concentration sensor, and the hydrogen concentration sensor are all electrically connected to the controller.

[0018] Through the above technical solution, it is convenient for the controller to control each component.

[0019] Preferably, the reaction tank assembly and the measurement tank assembly are both on the same plane, and the measurement tank assembly is located to the left of the reaction tank assembly.

[0020] Through the above technical solution, the measurement tank assembly being located to the left of the reaction tank assembly is convenient for storing the decomposed mixed gas for detection.

[0021] Compared with the prior art, the utility model provides a device for measuring the catalytic efficiency of an ammonia decomposition catalyst, which has the following beneficial effects: the device for measuring the catalytic efficiency of the ammonia decomposition catalyst can monitor the flow rate when ammonia passes through the inlet pipe through the inlet valve and the inlet flowmeter, and when the test volume is reached, the controller closes the inlet valve, which is convenient for controlling the accuracy of the test. The catalyst can be heated by the heater to decompose ammonia. When the test time is reached, the decomposed mixed gas can be quantitatively pumped into the measuring tank assembly through the outlet valve, the outlet flowmeter and the air pump. The nitrogen concentration and hydrogen concentration of the decomposed mixed gas can be detected by the nitrogen concentration sensor and the hydrogen concentration sensor, so as to facilitate understanding the performance and efficiency of the catalyst for improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic three-dimensional structure of the present utility model Figure 1 ;

[0023] Figure 2 Schematic three-dimensional structure of the present utility model Figure 2 ;

[0024] Figure 3 Front view structure schematic diagram of the present utility model;

[0025] Figure 4 Schematic sectional structure of the present utility model Figure 1 ;

[0026] Figure 5 Schematic sectional structure of the present utility model Figure 2 .

[0027] Wherein: 1. Reaction tank assembly; 101. Reaction tank body; 102. Support pillar; 103. Heater; 104. Catalyst; 2. Controller; 3. Support; 4. Inlet pipe; 5. Inlet valve; 6. Inlet flowmeter; 7. Outlet pipe; 8. Outlet valve; 9. Outlet flowmeter; 10. Air pump; 11. Connecting pipe; 12. Measuring tank assembly; 1201. Measuring tank body; 1202. Top cover; 1203. Support plate; 1204. Nitrogen concentration sensor; 1205. Hydrogen concentration sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment 1: AsFigures 1-5 As shown in the figure, a device for measuring the catalytic efficiency of an ammonia decomposition catalyst provided by the present utility model includes a reaction tank assembly 1. A controller 2 is arranged outside the reaction tank assembly 1. A support 3 is fixedly connected to the lower end of the reaction tank assembly 1. An inlet pipe 4 is fixedly connected to the upper end of the reaction tank assembly 1. An inlet valve 5 is arranged outside the inlet pipe 4. An inlet flowmeter 6 is arranged outside the inlet pipe 4. An outlet pipe 7 is fixedly connected to the outside of the reaction tank assembly 1. An outlet valve 8 is arranged outside the outlet pipe 7. An outlet flowmeter 9 is arranged outside the outlet pipe 7. One end of the outlet pipe 7 far from the reaction tank assembly 1 is fixedly connected to an air pump 10. A connecting pipe 11 is fixedly connected to the left side of the air pump 10. The upper end of the connecting pipe 11 is fixedly connected to a measuring tank assembly 12;

[0030] The reaction tank assembly 1 includes a reaction tank body 101, a support column 102, a heater 103 and a catalyst 104. A support column 102 is fixedly installed inside the reaction tank body 101. A heater 103 is fixedly installed outside the support column 102. A catalyst 104 is installed at the upper end of the heater 103;

[0031] The measuring tank assembly 12 includes a measuring tank body 1201, a top cover 1202, a support plate 1203, a nitrogen concentration sensor 1204 and a hydrogen concentration sensor 1205. A top cover 1202 is arranged at the upper end of the measuring tank body 1201. A support plate 1203 is fixedly connected to the lower end of the top cover 1202. A nitrogen concentration sensor 1204 is fixedly installed on the left side of the support plate 1203. A hydrogen concentration sensor 1205 is fixedly installed on the right side of the support plate 1203.

[0032] Specifically, a plurality of supports 3 are fixedly connected to the lower end of the reaction tank assembly 1. The inlet valve 5 is located in front of the inlet flowmeter 6. The advantage is that it can prevent the remaining gas after the inlet valve 5 is closed from not being detected by the inlet flowmeter 6, making it more accurate.

[0033] Specifically, two catalysts 104 are fixedly connected to the outside of the support column 102. Catalysts 104 are fixedly installed at both the upper and lower ends of the heater 103. The advantage is that the two catalysts 104 can accelerate the reaction time of ammonia decomposition and improve the efficiency.

[0034] Specifically, the support column 102 is located at the central position of the reaction tank body 101. The outlet pipe 7 is fixedly connected between the reaction tank assembly 1 and the air pump 10. The advantage is that the air pump 10 can accelerate the gas flow rate.

[0035] Example 2: As Figures 2-5 shown, as an improvement to the previous example.

[0036] Specifically, the air outlet valve 8 is located to the left of the air outlet flowmeter 9, and the connecting pipe 11 is fixedly connected between the air pump 10 and the measuring tank assembly 12. The advantage is that it is convenient to pump the decomposed mixed gas into the measuring tank assembly 12 for detection.

[0037] Specifically, the heater 103, the intake valve 5, the intake flowmeter 6, the outlet valve 8, the outlet flowmeter 9, the air pump 10, the nitrogen concentration sensor 1204, and the hydrogen concentration sensor 1205 are all electrically connected to the controller 2. The advantage is that it is convenient for the controller 2 to control each component.

[0038] Specifically, the reaction tank assembly 1 and the measuring tank assembly 12 are both on the same plane, and the measuring tank assembly 12 is located to the left of the reaction tank assembly 1. The advantage is that the measuring tank assembly 12 being located to the left of the reaction tank assembly 1 is convenient for storing the decomposed mixed gas for detection.

[0039] Working principle: During use, the intake valve 5 and the intake flowmeter 6 can monitor the flow rate when ammonia passes through the intake pipe 4. When the test volume is reached, the controller 2 closes the intake valve 5 to facilitate controlling the test accuracy. The heater 103 can heat the catalyst 104 to decompose ammonia. When the test time is up, the decomposed mixed gas can be quantitatively pumped into the measuring tank assembly 12 through the outlet valve 8, the outlet flowmeter 9, and the air pump 10. The nitrogen concentration sensor 1204 of the HS660-N2 model and the hydrogen concentration sensor 1205 of the H2 model can detect the nitrogen concentration and hydrogen concentration of the decomposed mixed gas, so as to facilitate understanding the performance and efficiency of the catalyst 104 for improvement.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ammonia decomposition catalyst catalytic efficiency measuring device, comprising a reaction tank assembly (1), characterized in that: A controller (2) is provided on the outer side of the reaction tank assembly (1). A support (3) is fixedly connected to the lower end of the reaction tank assembly (1). An inlet pipe (4) is fixedly connected to the upper end of the reaction tank assembly (1). An inlet valve (5) is provided on the outer side of the inlet pipe (4). An inlet flowmeter (6) is provided on the outer side of the inlet pipe (4). An outlet pipe (7) is fixedly connected to the outer side of the reaction tank assembly (1). An outlet valve (8) is provided on the outer side of the outlet pipe (7). An outlet flowmeter (9) is provided on the outer side of the outlet pipe (7). One end of the outlet pipe (7) far from the reaction tank assembly (1) is fixedly connected to an air pump (10). A connecting pipe (11) is fixedly connected to the left side of the air pump (10). The upper end of the connecting pipe (11) is fixedly connected to a measuring tank assembly (12). The reaction tank assembly (1) includes a reaction tank body (101), a support column (102), a heater (103) and a catalyst (104). A support column (102) is fixedly installed inside the reaction tank body (101). A heater (103) is fixedly installed on the outer side of the support column (102). A catalyst (104) is installed at the upper end of the heater (103). The measuring tank assembly (12) includes a measuring tank body (1201), a top cover (1202), a support plate (1203), a nitrogen concentration sensor (1204) and a hydrogen concentration sensor (1205). A top cover (1202) is provided at the upper end of the measuring tank body (1201). A support plate (1203) is fixedly connected to the lower end of the top cover (1202). A nitrogen concentration sensor (1204) is fixedly installed on the left side of the support plate (1203). A hydrogen concentration sensor (1205) is fixedly installed on the right side of the support plate (1203).

2. The catalytic efficiency measurement device of an ammonia decomposition catalyst according to claim 1, wherein: A plurality of supports (3) are fixedly connected to the lower end of the reaction tank assembly (1). The inlet valve (5) is located in front of the inlet flowmeter (6).

3. The measuring device for the catalytic efficiency of an ammonia decomposition catalyst according to claim 1, wherein: Two catalysts (104) are fixedly connected to the outer side of the support column (102). Catalysts (104) are fixedly installed at both the upper and lower ends of the heater (103).

4. The catalytic efficiency measuring device for an ammonia decomposition catalyst according to claim 1, characterized in that: The support column (102) is located at the central position of the reaction tank body (101). The outlet pipe (7) is fixedly connected between the reaction tank assembly (1) and the air pump (10).

5. The measuring device for the catalytic efficiency of an ammonia decomposition catalyst according to claim 1, characterized in that: The outlet valve (8) is located to the left of the outlet flowmeter (9). The connecting pipe (11) is fixedly connected between the air pump (10) and the measuring tank assembly (12).

6. The catalytic efficiency measuring device for an ammonia decomposition catalyst according to claim 1, characterized in that: The heater (103), the inlet valve (5), the inlet flowmeter (6), the outlet valve (8), the outlet flowmeter (9), the air pump (10), the gas concentration sensor (1204) and the hydrogen concentration sensor (1205) are all electrically connected to the controller (2).

7. An ammonia decomposition catalyst catalytic efficiency measuring device according to claim 1, characterized in that: The reaction tank assembly (1) and the measuring tank assembly (12) are both located on the same plane. The measuring tank assembly (12) is located to the left of the reaction tank assembly (1).

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