Air inlet device for molecular sieve adsorption experiment

Abstract

The utility model relates to an air inlet device for a molecular sieve adsorption experiment. The gas inlet device comprises a device frame, a plurality of gas tank fixing structures for fixing gas tanks are arranged on the device frame, a first gas path and a second gas path are arranged on the device frame, the first gas path comprises a first pipeline, the first pipeline is provided with a first gas outlet and more than two first gas inlets, and the second gas path comprises a second pipeline. The second pipeline is provided with a second air outlet and more than two second air inlets, and each air inlet is provided with a control valve. More than two gas tanks, such as a nitrogen gas tank, can be connected through the first gas path; more than two gas tanks, such as a carbon dioxide gas tank, can be connected through the second gas path. Each gas path can be connected with more than two gas tanks, and the gas tanks do not need to be replaced frequently, so that the problem of inaccurate detection result caused by unstable gas pressure in the gas paths due to replacement of the gas tanks is avoided. And the time is saved, the gas tank does not need to be replaced frequently, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular sieve adsorption testing, in particular to an air intake device for molecular sieve adsorption experiments. Background Art

[0002] Molecular sieve is a synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. It has high adsorption capacity, strong selectivity, and high temperature resistance. It is widely used in organic chemical industry and petrochemical industry. It is also an excellent adsorbent for coal gas dehydration. At present, it is also increasingly valued in waste gas purification.

[0003] When testing molecular sieves, carbon dioxide gas and nitrogen are often used to test the molecular sieve's adsorption capacity for carbon dioxide, and the molecular sieve is regenerated with nitrogen to test the performance of the molecular sieve. Experimental equipment and gas sources are used in the test process. Both the carbon dioxide gas source and the nitrogen gas source use compressed gas cylinders and are placed together with the experimental equipment. During the test, after a gas cylinder is used up, it is necessary to replace the next gas cylinder, which leads to the need to frequently replace the gas cylinder, especially when the gas cylinder needs to be replaced during the experiment. This causes large fluctuations in the gas pressure in the experimental device, affecting the detection structure of the experiment. Frequent replacement of gas cylinders is not only cumbersome, but also increases the risk of leakage, making it inconvenient to use. Utility Model Content

[0004] The utility model aims to provide an air intake device for molecular sieve adsorption experiments, so as to solve the problems in the prior art that the gas cylinder needs to be frequently replaced, resulting in gas pressure fluctuations that affect the experimental results and are inconvenient to use.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an air intake device for molecular sieve adsorption experiment, including a device frame, on which a gas tank fixing structure for fixing multiple gas tanks is arranged, and a first gas path and a second gas path are arranged on the device frame. The first gas path includes a first pipeline, and the first pipeline has a first gas outlet and more than two first gas inlets. The second gas path includes a second pipeline, and the second pipeline has a second gas outlet and more than two second gas inlets, and a control valve is arranged at each gas inlet.

[0006] The gas tank fixing structure comprises an upper arc plate and a lower arc plate which are arranged on the device frame at an upper and lower interval. The upper and lower arc plates have openings facing the gas tank and are used to accommodate the gas tank. Chains for fixing the gas tank are arranged on the upper arc plate and / or the lower arc plate.

[0007] Both ends of each upper arc-shaped plate are provided with connecting columns extending upwards for the chain to connect to fix the gas tank.

[0008] Any two adjacent upper arc-shaped plates share an end portion, on which the connecting column is arranged.

[0009] The device frame comprises an upper fixing frame and a lower fixing frame, the upper fixing frame and the lower fixing frame are separately arranged up and down, the upper arc plate is arranged on the upper fixing frame, and the lower arc plate is arranged on the lower fixing frame.

[0010] The upper fixing frame includes an upper fixing plate and a lower fixing plate which are spaced apart from each other, a rear beam is fixedly connected between the upper fixing plate and the lower fixing plate, a fixing frame is arranged on the upper fixing plate, a front beam is arranged on the front side of the fixing frame, the lower end of the front beam is connected to the rear beam through an intermediate beam, and the first gas path and the second gas path are both fixedly arranged on the front beam.

[0011] The first gas circuit and the second gas circuit are both provided with a pressure stabilizing valve.

[0012] The beneficial effects of the utility model are as follows: more than two gas cylinders, such as nitrogen gas cylinders, can be connected through the first gas circuit; more than two gas cylinders, such as carbon dioxide gas cylinders, can be connected through the second gas circuit. The advantage of such a setting is that more than two gas cylinders can be connected to each gas circuit, and the gas cylinders can be switched through the control valve and the valve on the upper end of the gas cylinder, without the need to frequently replace the gas cylinders, thus avoiding the problem of inaccurate detection results caused by unstable air pressure in the gas circuit due to replacement of the gas cylinders. It also saves time, and does not need to frequently replace the gas cylinders, and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of an air intake device for molecular sieve adsorption experiment of the utility model;

[0014] Figure 2 yes Figure 1 A schematic diagram of the structure at another angle;

[0015] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0017] It should be noted that, unless otherwise defined, the technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0018] An embodiment of an air intake device for molecular sieve adsorption experiment of the utility model is as follows Figure 1-Figure 3 As shown, it includes a device frame 1, on which a plurality of gas tank fixing structures for fixing gas tanks are arranged. Specifically, the gas tank fixing structure includes an upper arc plate 2 and a lower arc plate 3 which are arranged on the device frame at upper and lower intervals. The upper and lower arc plates have openings facing the gas tank and are used to accommodate the gas tank (not shown in the figure). In order to better fix the gas tank, a chain for fixing the gas tank is arranged on the upper arc plate (not shown in the figure). Both ends of each upper arc plate are provided with upwardly extending connecting columns 4 for the chain to connect to fix the gas tank. The chain fixes the corresponding gas tank by connecting to the connecting columns on both sides of the gas tank. In order to place more gas tanks, any two adjacent upper arc plates 2 share an end, and the above-mentioned connecting column is arranged on the end.

[0019] In this embodiment, a first gas circuit 5 and a second gas circuit 6 are provided on the device frame 1, and the first gas circuit includes a first pipeline, and the first pipeline has a first gas outlet 7 and more than two first gas inlets 8. The second gas circuit includes a second pipeline, and the second pipeline has a second gas outlet 9 and more than two second gas inlets 10. In this embodiment, the number of first gas inlets is two, and the number of second gas inlets is five. A control valve 11 is provided at each gas inlet. A pressure regulating valve 12 is provided on the first gas circuit and the second gas circuit. The first gas inlet of the first gas circuit can be connected to a nitrogen gas tank, and the second gas inlet of the second gas circuit can be connected to a carbon dioxide gas tank. Nitrogen and carbon dioxide can be used to test the adsorption capacity and regeneration capacity of the molecular sieve through the experimental device.

[0020] The device frame 1 includes an upper fixing frame and a lower fixing frame 16, which are separated from each other up and down, an upper arc plate 2 is arranged on the upper fixing frame, and a lower arc plate 3 is arranged on the lower fixing frame 16. Specifically, the upper fixing frame includes an upper fixing plate 13 and a lower fixing plate 14 which are arranged at intervals up and down, and a rear beam 17 is fixedly connected between the upper fixing plate and the lower fixing plate. The upper fixing plate, the lower fixing plate and the lower fixing frame are all provided with connection holes, which can be connected to the wall by bolts. A fixing frame 15 is provided on the upper fixing plate 13, and a front beam 18 is provided on the front side of the fixing frame. The lower end of the front beam is connected to the rear beam 17 through an intermediate beam 19, and the first gas path 5 and the second gas path 6 are both fixedly arranged on the front beam 18. The advantage of such a setting is that the first gas path and the second gas path can be kept at a certain distance from the wall, which is convenient for the installation and replacement of the first gas path and the second gas path, as well as the installation and replacement of the control valve and the pressure regulating valve.

[0021] When in use, two nitrogen cylinders are connected to the two first air inlets of the first gas circuit, and five carbon dioxide cylinders are connected to the five second air inlets of the second gas circuit. Nitrogen is transported by the first gas circuit for standby use, and carbon dioxide gas is transported by the second gas circuit for standby use. Each gas circuit adopts parallel air intake. When switching gas cylinders, you only need to open the corresponding control valve. There is no need to frequently replace gas cylinders. It is not only convenient and quick, but also can ensure pressure stability, and ensure the reliability and accuracy of the experiment.

[0022] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0023] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0024] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0025] In other embodiments of the utility model, the number of the first air inlets and the number of the second air inlets can be adjusted according to actual needs; the chain can also be replaced by a rope; any two adjacent upper arc plates can also be arranged at intervals, and in this case, connecting columns are provided at both ends of each upper arc plate; a chain can also be provided on the lower arc plate.

Claims

1. An air intake device for molecular sieve adsorption experiment, characterized in that: The device frame includes a gas tank fixing structure for fixing multiple gas tanks, the device frame includes a first gas circuit and a second gas circuit, the first gas circuit includes a first pipeline, the first pipeline has a first gas outlet and more than two first gas inlets, the second gas circuit includes a second pipeline, the second pipeline has a second gas outlet and more than two second gas inlets, and each gas inlet is provided with a control valve.

2. The air intake device for molecular sieve adsorption experiment according to claim 1 is characterized in that: The gas tank fixing structure comprises an upper arc plate and a lower arc plate which are arranged on the device frame at an upper and lower interval. The upper and lower arc plates have openings facing the gas tank and are used to accommodate the gas tank. Chains for fixing the gas tank are arranged on the upper arc plate and / or the lower arc plate.

3. The air intake device for molecular sieve adsorption experiment according to claim 2 is characterized in that: Both ends of each upper arc-shaped plate are provided with connecting columns extending upwards for the chain to connect to fix the gas tank.

4. The air intake device for molecular sieve adsorption experiment according to claim 3 is characterized in that: Any two adjacent upper arc-shaped plates share an end portion, on which the connecting column is arranged.

5. The air intake device for molecular sieve adsorption experiment according to any one of claims 2 to 4, characterized in that: The device frame comprises an upper fixing frame and a lower fixing frame, the upper fixing frame and the lower fixing frame are separately arranged up and down, the upper arc plate is arranged on the upper fixing frame, and the lower arc plate is arranged on the lower fixing frame.

6. The air intake device for molecular sieve adsorption experiment according to claim 5, characterized in that: The upper fixing frame includes an upper fixing plate and a lower fixing plate which are spaced apart from each other, a rear beam is fixedly connected between the upper fixing plate and the lower fixing plate, a fixing frame is arranged on the upper fixing plate, a front beam is arranged on the front side of the fixing frame, the lower end of the front beam is connected to the rear beam through an intermediate beam, and the first gas path and the second gas path are both fixedly arranged on the front beam.

7. The air intake device for molecular sieve adsorption experiment according to claim 1 is characterized in that: The first gas circuit and the second gas circuit are both provided with a pressure stabilizing valve.

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