Penetration curve testing device for carbon dioxide adsorption performance based on 13X zeolite molecular sieve

Abstract

The utility model relates to a penetration curve testing device for carbon dioxide adsorption performance based on a 13X zeolite molecular sieve, which comprises a testing box body and a gas source tank for supplying mixed gas of carbon dioxide and nitrogen to the testing box body, the gas source tank is connected with the gas flowmeter I through a pipeline; the heat exchanger is used for heating the gas source; the adsorption column I and the adsorption column II are filled with zeolite particles; a gas flowmeter II; provided is a carbon dioxide detector. The adsorption column I and the adsorption column II are filled with zeolite particles, and carbon dioxide gas flow with the concentration close to the actual concentration is introduced, so that the adsorption process in actual application can be simulated more truly, and the concentration of outlet gas is monitored in real time through a carbon dioxide detector, and a penetration curve is drawn; the adsorption rate, the adsorption capacity and the regeneration performance of the 13X zeolite molecular sieve can be accurately evaluated.

Description

Technical Field

[0001] This utility model relates to the field of gas adsorption performance testing technology, specifically a breakthrough curve testing device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve. Background Technology

[0002] 13X zeolite molecular sieves, as inorganic aluminosilicate crystals, possess a large specific surface area and a regular pore structure, making them widely used in gas separation and purification. Particularly in air separation, 13X zeolite molecular sieves can efficiently and selectively adsorb impurities such as carbon dioxide, moisture, and some hydrocarbons from the air, achieving deep purification of air. To accurately evaluate the adsorption performance of 13X zeolite molecular sieves, several devices exist on the market for testing their adsorption properties. However, most use powdered zeolite or ground zeolite particles with small filling volumes, failing to accurately simulate real-world application scenarios. These devices often cannot fully reflect the adsorption performance of zeolite molecular sieves in practical applications, especially when handling large volumes of gas or requiring long-term stable operation; their test results may exhibit significant deviations. Therefore, establishing a carbon dioxide breakthrough curve testing device that can simulate real-world application scenarios is particularly important. Utility Model Content

[0003] The technical problem to be solved by this invention is to address the shortcomings of the existing technology by providing a breakthrough curve testing device that can more accurately simulate actual application scenarios and evaluate the carbon dioxide adsorption performance of 13X zeolite molecular sieves.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution: a breakthrough curve testing device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve, which includes a test chamber and a gas source tank for supplying a mixture of carbon dioxide and nitrogen to the test chamber. The test chamber has the following features:

[0005] Gas flow meter I is installed on the side wall of the test chamber, and the gas source tank is connected to gas flow meter I through a pipeline;

[0006] A heat exchanger is installed on the pipeline between the gas source tank and the gas flow meter I to heat the gas source.

[0007] Adsorption column I and adsorption column II are installed on the inner wall of the test chamber. Gas flow meter I is connected to the bottom of adsorption column I and adsorption column II through pipes. Adsorption column I and adsorption column II are filled with zeolite particles for adsorbing carbon dioxide gas.

[0008] Gas flow meter II is installed on the top wall of the test chamber. The top of adsorption column I and adsorption column II are connected to gas flow meter II through pipes.

[0009] The carbon dioxide detector is installed on the top wall of the test chamber next to the gas flow meter II. Its inlet end is connected to the pipeline between the gas flow meter II and the adsorption column I and the adsorption column II via a pipeline.

[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the breakthrough curve test device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve described above is equipped with air flow cut-off valves at the top and bottom of adsorption column I and adsorption column II, as well as at the bottom of adsorption column I.

[0011] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the breakthrough curve test device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve described above, wherein the adsorption column I and adsorption column II are vertically installed on the inner wall of the test chamber.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows: by filling the adsorption column I and adsorption column II with zeolite particles and introducing a carbon dioxide gas flow close to the actual concentration, the adsorption process in actual applications can be simulated more realistically. By monitoring the outlet gas concentration in real time and plotting the breakthrough curve through a carbon dioxide detector, the adsorption rate, adsorption capacity and regeneration performance of 13X zeolite molecular sieve can be accurately evaluated. Moreover, the device has a compact structure, is easy to operate, and can quickly complete the test process, improving test efficiency. The data obtained from the test can provide strong support for the selection of zeolite molecular sieves, optimization of operating parameters and determination of replacement cycle in practical applications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0014] Attached reference numerals: 1. Test chamber; 2. Gas source tank; 3. Gas flow meter I; 4. Heat exchanger; 5. Adsorption column I; 6. Adsorption column II; 7. Gas flow meter II; 8. Carbon dioxide detector. Detailed Implementation

[0015] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0016] Example 1, referring to Figure 1 A breakthrough curve testing device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve includes a test chamber 1 and a gas source tank 2 for supplying a mixture of carbon dioxide and nitrogen to the test chamber 1. The test chamber 1 has the following features:

[0017] Gas flow meter I3 is an existing technology. Its specifications and models can be selected according to the usage requirements. It is installed on the side wall of the test chamber 1. The gas source tank 2 is connected to the gas flow meter I3 through a pipeline.

[0018] Heat exchanger 4 is an existing technology whose specifications and models can be selected according to the usage requirements. It is installed on the pipeline between gas source tank 2 and gas flow meter I3 to heat the gas source.

[0019] Adsorption columns I5 and II6 are roughly cylindrical in structure, and their dimensions can be selected according to usage requirements, such as a diameter of 30mm and a length of 450mm. They are installed on the inner wall of the test chamber 1. Gas flow meter I3 is connected to the bottom of adsorption columns I5 and II6 through pipes. Adsorption columns I5 and II6 are filled with zeolite particles for adsorbing carbon dioxide gas. The design can hold 100-300g of zeolite particles. Air flow control valves are installed at the top and bottom of adsorption columns I5 and II6, as well as at the bottom of adsorption column I5. Adsorption columns I5 and II6 are vertically installed on the inner wall of the test chamber 1.

[0020] Gas flow meter II7 is an existing technology. Its specifications and models can be selected according to the usage requirements. It is installed on the top wall of the test chamber 1. The top of adsorption column I5 and adsorption column II6 are connected to gas flow meter II7 through pipes.

[0021] Carbon dioxide detector 8 is an existing technology whose specifications and models can be selected according to usage requirements. It is installed on the top wall of test chamber 1 next to gas flow meter II7. Its inlet end is connected to the pipeline between gas flow meter II7 and adsorption column I5 and adsorption column II6 through a pipeline. It is used to monitor the gas concentration at the outlet of adsorption column in real time and draw breakthrough curves to evaluate the adsorption rate, adsorption capacity and regeneration performance of zeolite molecular sieve.

[0022] The beneficial technical effects obtainable by using this breakthrough curve testing device based on the carbon dioxide adsorption performance of 13X zeolite molecular sieve are as follows:

[0023] (1) Simulate actual working conditions: By filling a large number of zeolite particles and introducing a carbon dioxide gas flow close to the actual concentration, the adsorption process in actual applications can be simulated more realistically.

[0024] (2) Accurate performance evaluation: By monitoring the outlet gas concentration in real time and plotting the breakthrough curve, the adsorption rate, adsorption capacity and regeneration performance of 13X zeolite molecular sieve can be accurately evaluated.

[0025] (3) Improve testing efficiency: The device has a compact structure and is easy to operate, which can quickly complete the testing process and improve testing efficiency.

[0026] (4) Guiding practical applications: The data obtained through testing can provide strong support for the selection of zeolite molecular sieves, optimization of operating parameters and determination of replacement cycle in practical applications.

Claims

1. A breakthrough curve testing apparatus based on carbon dioxide adsorption performance of 13X zeolite molecular sieves, characterized in that: It includes a test box and a gas source tank for supplying carbon dioxide and nitrogen mixed gas to the test box, the test box is provided with; A gas flow meter I is installed on the side wall of the test box, and the gas source tank is connected with the gas flow meter I through a pipeline; A heat exchanger is sleeved on the pipeline between the gas source tank and the gas flow meter I to heat the gas source; Adsorption columns I and II are installed on the inner wall of the test box, and the gas flow meter I is connected with the bottom of the adsorption columns I and II through a pipeline, and the adsorption columns I and II are filled with zeolite particles for adsorbing carbon dioxide gas; A gas flow meter II is installed on the top wall of the test box, and the top of the adsorption columns I and II is connected with the gas flow meter II through a pipeline; A carbon dioxide detector is installed on the top wall of the test box beside the gas flow meter II, and the inlet end is connected to the pipeline between the gas flow meter II and the adsorption columns I and II through a pipeline.

2. The breakthrough curve testing apparatus based on carbon dioxide adsorption performance of 13X zeolite molecular sieves according to claim 1, characterized in that: Valves for air flow on-off are installed on the top and bottom of the adsorption columns I and II and the bottom of the adsorption column I.

3. The breakthrough curve testing apparatus based on carbon dioxide adsorption performance of 13X zeolite molecular sieves according to claim 1, characterized in that: The adsorption columns I and II are vertically installed on the inner wall of the test box.

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