Gas adsorption capacity testing device

Abstract

The utility model discloses a gas adsorption capacity testing device which comprises a gas supply and outlet module, a sensor module, a gas tank module, a sample module and a control module, the gas supply and outlet module is respectively communicated with the sensor module and the gas tank module; the sensor module is communicated with the gas tank module; the sample module is communicated with the sensor module, the gas tank module and the gas supply and outlet module; the control module is used for controlling the gas supply and outlet module, the sensor module, the gas tank module and the sample module; three different pressure sensors and a total pressure controller are arranged, the three different sensors are the low sensor, the middle sensor and the high sensor, the total pressure controller is used for conducting PID pressure control on the device, the three different pressure sensors conduct feedback on the PID pressure control, and under the control of LabView software, the pressure of the device can be controlled through the LabView software. Accurate control on gas under low-pressure and high-pressure conditions can be achieved, and meanwhile stepping operation on pressure under logic control can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to gas adsorption and separation, and in particular to a gas adsorption amount testing device. Background Art

[0002] With the development of industrialization, energy utilization and industrial activities are highly active, the market demand for gas is greater, and the development of highly purified gas is greatly promoted. The traditional adsorption process is generally the gas compression, condensation liquefaction, heating and vaporization steps of the distillation process to achieve high-purity gas. This adsorption or purification will lose more energy and has great resistance to the realization of a green or low-carbon society. To this end, researchers summarize and compare the unique physical and chemical properties of different gases, select suitable adsorbents, and achieve gas adsorption separation or purification through the difference in the affinity of the adsorbent to the gas through periodic changes in pressure and temperature. At the same time, mass transfer, heat transfer and momentum transfer are involved in temperature increase and decrease, pressure increase and decrease, adsorption and separation, which can effectively further utilize this part of energy. Adsorption, as a very effective gas purification technology, has a broad application space in various industries.

[0003] Based on the above existing problems, our company proposed corresponding equipment technology transformation after sufficient comparison and demonstration, and developed and designed a gas adsorption test device. Utility Model Content

[0004] The utility model aims to provide a gas adsorption amount testing device to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a gas adsorption amount test device, a gas adsorption amount test device, including a gas supply and outlet module, a sensor module, a gas tank module, a sample module, and a control module;

[0006] The air supply and outlet modules are respectively connected to the sensor module and the gas tank module;

[0007] The sensor module is in communication with the gas tank module;

[0008] The sample module is in communication with the sensor module, the gas tank module and the gas supply and outlet module;

[0009] The control module controls the gas supply and outlet module, the sensor module, the gas tank module, and the sample module.

[0010] In a preferred embodiment, the air supply and outlet module comprises a first air inlet pipe, a second air inlet pipe, a third air inlet pipe, an air outlet pipe and a vacuum pipe; the first air inlet pipe, the second air inlet pipe, the third air inlet pipe, the air outlet pipe and the vacuum pipe are respectively arranged in parallel with each other; the first air inlet pipe, the second air inlet pipe, the third air inlet pipe, the air outlet pipe and the vacuum pipe are respectively provided with valve modules; the valve modules on the first air inlet pipe, the second air inlet pipe and the third air inlet pipe are also provided with pressure reducing valves and one-way valves on both sides respectively; a one-way valve is provided on one side of the valve module on the air outlet pipe, and another valve module is provided on one side of the one-way valve; a one-way valve is also provided on one side of the valve module on the vacuum pipe, and a vacuum pump is connected to one side of the one-way valve.

[0011] A preferred solution is that the sensor module includes a low pressure sensor, a medium pressure sensor, a high pressure sensor and a total pressure controller; the low pressure sensor, the medium pressure sensor and the high pressure sensor are respectively arranged in parallel with each other, and are arranged in series with the total pressure controller; the total pressure controller performs PID pressure control on the low pressure sensor, the medium pressure sensor and the high pressure sensor, and performs real-time feedback; the low pressure sensor, the medium pressure sensor, the high pressure sensor and the total pressure controller are all connected to a valve module.

[0012] In a preferred embodiment, the gas tank module includes a first gas tank, a second gas tank and an N2 gas cylinder; the first gas tank and the second gas tank are arranged in parallel and are respectively connected to a valve module; the N2 gas cylinder is connected to the gas supply and outlet module, the sensor module and the valve modules of the first gas tank and the second gas tank.

[0013] In a preferred solution, the sample module comprises a sample rod; the sample module is arranged on a lifting platform and is equipped with a heating device.

[0014] In a preferred solution, the control module is externally connected to a computer.

[0015] In a preferred solution, the valve modules are all pneumatic valves and are switched on and off by a solenoid valve.

[0016] In a preferred embodiment, both the gas tank module and the sample module are equipped with temperature sensors.

[0017] Due to the application of the above technical solution, the beneficial effects of the present application compared with the prior art are:

[0018] A gas adsorption capacity testing device of the present application is equipped with three different pressure sensors and a total pressure controller through the coordinated use of a gas supply and outlet module, a sensor module, a gas tank module, a sample module, and a control module. The three different sensors are low, medium, and high, respectively, and the total pressure controller. The device is PID pressure controlled by the total pressure controller, and the three different pressure sensors respectively provide feedback thereto. Under the control of LabView software, precise control of the gas under low and high pressure conditions can be achieved, and the pressure can also be stepped under logical control.

[0019] The gas supply and outlet module is equipped with three different gas inlets, which can realize the gas distribution operation of the device. After the gas distribution and adsorption are completed, the gas can be detected by a chromatograph through the gas outlet to obtain the separation coefficient of the adsorbent for this type or several types of gases; different gas types have different treatment methods. The adsorption amount of the adsorbent on the gas can be directly calculated for the single gas, and the separation coefficient of the mixed gas needs to be calculated through an external chromatograph. For samples that need to be desorbed, the device can also realize the calculation of its desorption curve and data; different gases are introduced into the sample rod of the equipment, and the changes in pressure and temperature are monitored to calculate the specific adsorption amount of the sample on the gas, and the gas adsorption curve can be drawn through the data table, such as the adsorption amount-pressure curve, time-pressure curve, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Attached Figure 1 It is a structural schematic diagram of a gas adsorption testing device of the utility model;

[0022] Attached Figure 2 It is a detailed schematic diagram of the gas adsorption test device of the utility model;

[0023] Among them: 1. Air supply and outlet module; 2. Sensor module; 3. Gas tank module; 4. Sample module; 5. Control module; 6. First air inlet pipe; 7. Second air inlet pipe; 8. Third air inlet pipe; 9. Air outlet pipe; 10. Vacuum tube; 11. Valve module; 12. Pressure reducing valve; 13. Check valve; 14. Vacuum pump; 15. Low pressure sensor; 16. Medium pressure sensor; 17. High pressure sensor; 18. Total pressure controller; 19. First air tank; 20. Second air tank; 21. N2 cylinder; 22. Heating device. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0028] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; 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 an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Embodiment 1

[0031] Attached Figure 1-2 A gas adsorption test device according to the utility model, a gas adsorption test device, comprises a gas supply and outlet module 1, a sensor module 2, a gas tank module 3, a sample module 4, and a control module 5;

[0032] The air supply and outlet module 1 is communicated with the sensor module 2 and the gas tank module 3 respectively;

[0033] The sensor module 2 is connected to the gas tank module 3;

[0034] The sample module 4 is in communication with the sensor module 2, the gas tank module 3 and the gas supply and outlet module 1;

[0035] The control module 5 controls the gas supply and outlet module 1 , the sensor module 2 , the gas tank module 3 , and the sample module 4 .

[0036] The air supply and outlet module 1 comprises a first air inlet pipe 6, a second air inlet pipe 7, a third air inlet pipe 8, an air outlet pipe 9 and a vacuum pipe 10, and can support up to three kinds of gases for gas distribution operation; the first air inlet pipe 6, the second air inlet pipe 7, the third air inlet pipe 8, the air outlet pipe 9 and the vacuum pipe 10 are respectively arranged in parallel with each other; the first air inlet pipe 6, the second air inlet pipe 7, the third air inlet pipe 8, the air outlet pipe 9 and the vacuum pipe 10 are respectively provided with a valve module 11; the valve modules 11 on the first air inlet pipe 6, the second air inlet pipe 7 and the third air inlet pipe 8 are also provided with pressure reducing valves 12 and one-way valves 13 on both sides to control the gas pressure and flow direction; a one-way valve 13 is provided on one side of the valve module 11 on the air outlet pipe 9, and another valve module 11 is provided on one side of the one-way valve 13; a one-way valve 13 is also provided on one side of the valve module 11 on the vacuum pipe 10, and a vacuum pump 14 is connected to one side of the one-way valve 13.

[0037] The sensor module 2 includes a low pressure sensor 15, a medium pressure sensor 16, a high pressure sensor 17 and a total pressure controller 18; the low pressure sensor 15, the medium pressure sensor 16 and the high pressure sensor 17 are respectively arranged in parallel with each other, and are arranged in series with the total pressure controller 18; the total pressure controller 18 performs PID pressure control on the low pressure sensor 15, the medium pressure sensor 16 and the high pressure sensor 17, and performs real-time feedback; the ranges of the three pressure sensors, the low pressure sensor 15, the medium pressure sensor 16 and the high pressure sensor 17, are -14.7-235.3psi, -14.7-985.3psi, and -14.7-2985.3psi respectively; the range of the total pressure controller 18 is 0-3000psi; the total pressure controller 18 can accurately adjust the pressure through three pressure sensors and programs, with an accuracy of up to 0.01psi; the low pressure sensor 15, the medium pressure sensor 16, the high pressure sensor 17 and the total pressure controller 18 are all connected to the valve module 11.

[0038] The gas tank module 3 includes a first gas tank 19, a second gas tank 20 and an N2 gas cylinder 21; wherein, the volume of the first gas tank 19 is 1000ml, the volume of the second gas tank 20 is 150ml, and the gas tank pressure resistance can reach 5000psi; the first gas tank 19 and the second gas tank 20 are arranged in parallel, and are respectively connected to a valve module 11; the N2 gas cylinder 21 is connected to the gas supply and outlet module 1, the sensor module 2 and the valve modules 11 of the first gas tank 19 and the second gas tank 20.

[0039] The sample module 4 includes a sample rod; the sample module 4 is arranged on a lifting platform and is equipped with a heating device 22; the height of the lifting platform is adjustable, the highest is 300mm, the lowest is 0mm, and the volume and height of the sample rod can be customized.

[0040] The control module 5 is externally connected to a computer, and all valve modules 11 and a total pressure controller 18 are connected to the computer, so that automatic operation, measurement and drawing of the device can be realized.

[0041] The valve modules 11 are all pneumatic valves and are switched on and off by a solenoid valve.

[0042] The gas tank module 3 and the sample module 4 are both equipped with temperature sensors to achieve accurate control of the test temperature.

[0043] The gas adsorption test device is equipped with three different pressure sensors, namely, a low pressure sensor 15, a medium pressure sensor 16 and a high pressure sensor 17. Each sensor can be automatically switched or manually switched when needed under different pressure setting conditions and valve action. The total pressure controller 18 is fed back through a more accurate pressure sensor and has three different gas inlets, namely, a first air inlet pipe 6, a second air inlet pipe 7 and a third air inlet pipe 8. Under the control of the total pressure controller 18, the gas tank module 3 in the device can be gas-distributed. After the pressure change is known through the pressure sensor, the gas adsorption amount is automatically calculated. The device can be heated and cooled through a heating device 22 configured on the lifting platform. The gas after adsorption is detected through the gas outlet of the air outlet pipe 9 to identify the gas adsorption amount of the adsorbent and obtain the separation coefficient of the adsorbent for different gases.

[0044] For specific case descriptions, see the attached Figure 2 ,

[0045] Case Description 1:

[0046] Purpose: Hydrogen adsorption performance of rare earth hydrogen absorbing alloys

[0047] Design: Place the hydrogen absorbing alloy in the sample rod, open valves PV10, 13, 8, 5, and 4, and charge the gas tank with hydrogen. After the operation is completed, close valve PV8, open valve PV3, charge the sample rod with hydrogen, and obtain the adsorption data.

[0048] Results: After automatic calculation by computer, it was found that the hydrogen absorption of the alloy at room temperature was 1.5%.

[0049] Case illustration 2:

[0050] Purpose: Adsorption and separation performance of zeolite A for CH4 and CO2

[0051] Design: Place type A zeolite in the sample rod, first open valves PV10, 13, 8, and 5, fill the hydrogen storage tank with a certain amount of CO2, close valve PV8, open valve PV12, evacuate the pipeline, close valve PV12, open valves PV11 and 8, fill with an equal amount of CH4, close valve PV8, open valve PV3, after the adsorption is completed, open valve PV12 to evacuate the pipeline, and then open valves PV8, 14, and 9 to pass the gas into the chromatograph.

[0052] Results: Chromatography revealed that the separation coefficient of type A zeolite for CO2 / CH4 was about 30.

[0053] Case illustration 3:

[0054] Purpose: Hydrogen release performance of rare earth hydrogen absorbing alloys

[0055] Design: Place the saturated hydrogen-absorbing alloy in the sample rod, open valves PV12, 13, 14, 8, 5, 4, and evacuate the gas tank. After the operation is completed, close valves PV8 and 12, open valve PV3, and use the sample rod to release hydrogen from the gas tank to obtain the hydrogen release data.

[0056] Result: After automatic calculation by computer, the hydrogen release of the alloy at room temperature is 1.2%

[0057] The present application is equipped with three different pressure sensors and a total pressure controller 18 through the coordinated use of an air supply and outlet module 1, a sensor module 2, a gas tank module 3, a sample module 4, and a control module 5. The three different pressure sensors are low, medium, and high, respectively, and the total pressure controller 18. The device is PID pressure controlled by the total pressure controller 18, and the three different pressure sensors provide feedback thereto respectively. Under the control of LabView software, precise control of the gas under low and high pressure conditions can be achieved, and the pressure can also be stepped under logical control.

[0058] The gas supply and outlet module 1 is equipped with inlets for three different gases, which can realize the gas distribution operation of the device. After the gas distribution and adsorption are completed, the gas can be detected by using a chromatograph through the gas outlet to obtain the separation coefficient of the adsorbent for this type or several types of gases; different treatment methods are used for different gas types. The adsorption amount of the adsorbent on the gas can be directly calculated for the single gas, and the separation coefficient of the mixed gas needs to be calculated through an external chromatograph. For samples that need to be desorbed, the device can also realize the calculation of its desorption curve and data; different gases are introduced into the sample rod of the equipment, and the changes in pressure and temperature are monitored to calculate the data on the specific adsorption amount of the sample on the gas, and the gas adsorption curve can be drawn through the data table, such as the adsorption amount-pressure curve, time-pressure curve, etc.

[0059] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas adsorption test device, characterized in that: It includes a gas supply and outlet module, a sensor module, a gas tank module, a sample module, and a control module; The air supply and outlet modules are respectively connected to the sensor module and the gas tank module; The sensor module is connected to the gas tank module; the sensor module includes a low pressure sensor, a medium pressure sensor, a high pressure sensor and a total pressure controller; The sample module is in communication with the sensor module, the gas tank module and the gas supply and outlet module; The control module controls the gas supply and outlet module, the sensor module, the gas tank module, and the sample module.

2. A gas adsorption test device as claimed in claim 1, characterized in that: The air supply and outlet module comprises a first air inlet pipe, a second air inlet pipe, a third air inlet pipe, an air outlet pipe and a vacuum pipe; the first air inlet pipe, the second air inlet pipe, the third air inlet pipe, the air outlet pipe and the vacuum pipe are respectively arranged in parallel with each other; the first air inlet pipe, the second air inlet pipe, the third air inlet pipe, the air outlet pipe and the vacuum pipe are respectively provided with valve modules; pressure reducing valves and one-way valves are respectively provided on both sides of the valve modules on the first air inlet pipe, the second air inlet pipe and the third air inlet pipe; a one-way valve is provided on one side of the valve module on the air outlet pipe, and another valve module is provided on one side of the one-way valve; a one-way valve is also provided on one side of the valve module on the vacuum pipe, and a vacuum pump is connected to one side of the one-way valve.

3. A gas adsorption test device as claimed in claim 2, characterized in that: The low pressure sensor, medium pressure sensor and high pressure sensor are respectively arranged in parallel with each other, and are arranged in series with the total pressure controller; the total pressure controller performs PID pressure control on the low pressure sensor, medium pressure sensor and high pressure sensor, and performs real-time feedback; the low pressure sensor, medium pressure sensor, high pressure sensor and total pressure controller are all connected to a valve module.

4. A gas adsorption test device as claimed in claim 3, characterized in that: The gas tank module includes a first gas tank, a second gas tank and an N2 gas cylinder; the first gas tank and the second gas tank are arranged in parallel and are respectively connected to valve modules; the N2 gas cylinder is connected to the gas supply and outlet module, the sensor module and the valve modules of the first gas tank and the second gas tank.

5. A gas adsorption test device as claimed in claim 1, characterized in that: The sample module comprises a sample rod; the sample module is arranged on a lifting platform and is equipped with a heating device.

6. A gas adsorption test device as claimed in claim 1, characterized in that: The control module is externally connected to a computer.

7. A gas adsorption test device according to any one of claims 2 to 4, characterized in that: The valve modules are all pneumatic valves and are switched on and off by a solenoid valve.

8. A gas adsorption test device as claimed in claim 1, characterized in that: The gas tank module and the sample module are both equipped with temperature sensors.

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