CN211856490U - Multi-component competitive adsorption analyzer by static volumetric method - Google Patents
Multi-component competitive adsorption analyzer by static volumetric method Download PDFInfo
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- CN211856490U CN211856490U CN202020367383.7U CN202020367383U CN211856490U CN 211856490 U CN211856490 U CN 211856490U CN 202020367383 U CN202020367383 U CN 202020367383U CN 211856490 U CN211856490 U CN 211856490U
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 230000002860 competitive effect Effects 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002156 adsorbate Substances 0.000 abstract description 21
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 107
- 239000003463 adsorbent Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009849 vacuum degassing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The multi-component competitive adsorption analyzer adopting the static capacity method provided by the embodiment of the utility model enables the adsorbate gas to flow circularly through the gas circulating pump, eliminates the layering phenomenon of multi-component adsorbate gas, and effectively solves the influence of the layering of multi-component mixed gas on adsorption measurement; the concentration detector is utilized to accurately detect the concentration change of the multi-component gas before and after the multi-component gas is adsorbed, and the total adsorption quantity of the mixed gas is combined to obtain the adsorption quantity of each component in the mixed gas, so that the research on the adsorption performances such as competitive adsorption, synergistic effect and the like is facilitated.
Description
Technical Field
The utility model relates to a physical adsorption's instrument equipment field, concretely relates to static capacity method multicomponent competitiveness adsorbs analysis appearance.
Background
At present, the test and evaluation of adsorption performances such as adsorption capacity, adsorption rate, adsorption and desorption isotherms of adsorbents such as molecular sieves, activated carbon, MOFs and the like are generally completed by adopting a physical adsorption instrument. The principle of the existing physical adsorption instrument is that a static capacity method is adopted, namely the adsorption capacity, adsorption rate and other performances of the adsorbent on the adsorbate are calculated by testing the change of the gas pressure of the static non-flowing adsorbate before and after adsorption in a cavity with certain temperature and volume.
However, the existing physical adsorption instrument using static capacity method is only suitable for the condition that the adsorbate gas is a single component gas, when the adsorbate is a mixed gas, i.e. a multi-component gas, the total adsorption capacity of the adsorbent to the mixed gas can only be measured through the static capacity, and the adsorption capacity of the adsorbent to a certain component in the mixed gas can not be obtained; in addition, the layering phenomenon of multi-component gas exists in the mixed gas adsorption process, so that the adsorption amount of each component is not in consistent proportional relation with the initial concentration. Therefore, the existing physical adsorption instrument by the static capacity method is not suitable for the adsorption test of the multi-component mixed gas with the adsorbate.
However, because the mixed adsorbate has the phenomena of competitive adsorption effect, synergistic effect and the like among all components in the adsorption process, the test on the adsorption performance of all component gases in the mixed gas adsorbate has great value for researching multi-component competitive adsorption, synergistic effect and the like. Meanwhile, in the practical application of separation and purification of mixed gas, adsorption and purification of pollutant gas and the like, the adsorption of the multi-component mixed gas has more universal analysis and test values close to the practical working conditions.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that present static capacity method physical adsorption appearance can't satisfy the test of each component adsorption performance of adsorbent in to multi-component adsorbate gas, the utility model provides a static capacity method multicomponent competitiveness adsorbs analysis appearance.
The utility model provides a technical scheme that its technical problem adopted is: a static capacity method multi-component competitive adsorption analyzer comprising: the device comprises an automatic controller, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a mixed gas source, a reference cavity, a sample tube, a concentration detector, a gas circulating pump, a vacuum pump and a pressure sensor.
The automatic controller is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve, the mixed gas source, the gas circulating pump, the vacuum pump and the pressure sensor through leads, and the automatic controller automatically controls the above devices.
The gas outlet of the mixed gas source is connected with the reference cavity through a first gas guide pipeline, and a first electromagnetic valve is arranged on the first gas guide pipeline; the reference cavity is connected with the sample tube through a second air guide pipeline, and a second electromagnetic valve is arranged on the second air guide pipeline; the gas inlet of the gas circulating pump is connected with the reference cavity through a gas guide pipeline, the gas outlet of the gas circulating pump is respectively connected with the concentration detector and the bottom of the sample tube through the gas guide pipeline, the third electromagnetic valve is arranged on the gas guide pipeline connecting the gas outlet of the gas circulating pump with the sample tube, and the fourth electromagnetic valve is arranged on the gas guide pipeline connecting the gas outlet of the gas circulating pump with the concentration detector; the vacuum pump is connected with the reference cavity through an air guide pipeline, and the fifth electromagnetic valve is fixedly arranged on the air guide pipeline connecting the vacuum pump with the reference cavity; the pressure sensor is fixedly arranged on the reference cavity and used for detecting the pressure in the reference cavity.
The gas circulating pump has the capacity of bearing high-pressure gas and can work under the working condition of the high-pressure gas.
The concentration detector can be a mass spectrum detector, an infrared spectrum detector, a gas chromatograph and other concentration detectors.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides a static capacity method multicomponent competitiveness adsorbs the analysis appearance, and its beneficial effect is:
the adsorbate gas circularly flows through the gas circulating pump, so that the layering phenomenon of multi-component adsorbate gas is eliminated, and the influence of the layering phenomenon of multi-component mixed gas on adsorption measurement is effectively solved; the concentration detector is used for accurately detecting the concentration of the multi-component gas, so that the gas quantity absorbed by each component is obtained, and the research on the absorption performances of competitive absorption, synergistic effect and the like of the multi-component gas adsorbate is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a static capacity multi-component competitive adsorption analyzer.
In the figure, 1 is an automatic controller, 2 is a first electromagnetic valve, 3 is a mixed gas source, 4 is a first air guide pipeline, 5 is a reference cavity, 6 is a second electromagnetic valve, 7 is a second air guide pipeline, 8 is a sample tube, 9 is a circulating air outlet pipe, 10 is a third electromagnetic valve, 11 is a fourth electromagnetic valve, 12 is a fourth air guide pipeline, 13 is a concentration detector, 14 is a fifth air guide pipeline, 15 is a gas circulating pump, 16 is a sixth air guide pipeline, 17 is a vacuum pump, 18 is a seventh air guide pipeline, 19 is a fifth electromagnetic valve, and 20 is a pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 shows, the utility model provides a pair of multicomponent competitive adsorption analyzer of static capacity method, include: the device comprises an automatic controller 1, a first electromagnetic valve 2, a mixed gas source 3, a first gas guide pipeline 4, a reference cavity 5, a second electromagnetic valve 6, a second gas guide pipeline 7, a sample tube 8, a circulating gas outlet pipe 9, a third electromagnetic valve 10, a fourth electromagnetic valve 11, a fourth gas guide pipeline 12, a concentration detector 13, a fifth gas guide pipeline 14, a gas circulating pump 15, a sixth gas guide pipeline 16, a vacuum pump 17, a seventh gas guide pipeline 18, a fifth electromagnetic valve 19 and a pressure sensor 20. The automatic controller 1 is respectively connected with the first electromagnetic valve 2, the second electromagnetic valve 6, the third electromagnetic valve 10, the fourth electromagnetic valve 11, the fifth electromagnetic valve 19, the gas circulating pump 15, the vacuum pump 17 and the pressure sensor 20 through leads, and the automatic controller 1 automatically controls the devices to work according to a certain working process.
The mixed gas source 3 can be a steel cylinder filled with mixed gas or a gas distribution device. An air outlet of the air conditioner is connected with a reference cavity 8 through a first air guide pipeline 7, and a first electromagnetic valve 2 is arranged on the first air guide pipeline 7; the switch of the first electromagnetic valve 2 can control whether the mixed gas enters the reference cavity 8 or not according to a certain proportion of mixed gas provided by the mixed gas source 3.
The reference cavity 8 is connected with the sample tube 8 through a second air guide pipeline 7, a second electromagnetic valve 6 is arranged on the second air guide pipeline 7, and whether mixed gas in the reference cavity 8 enters the sample tube 8 or not is controlled through opening and closing of the second electromagnetic valve 6.
The gas inlet of the gas circulating pump 15 is connected with the reference cavity 5 through a sixth gas guide pipeline 16, the gas outlet of the gas circulating pump 15 is respectively connected with the gas inlet of the third electromagnetic valve 10 and the gas inlet of the fourth electromagnetic valve 11 through a fifth gas guide pipeline 14, and the gas circulating pump 15 has high-pressure bearing capacity and can normally work under high pressure; the gas outlet of the third electromagnetic valve 10 is connected with one end of the circulating gas outlet pipeline 14, and the gas outlet of the circulating gas outlet pipeline 14 is fixedly arranged at the bottom of the sample tube 8, so that no dead angle of all gas in the sample tube 8 is realized for circulating flow, and the gas in the sample tube 8 is prevented from being layered; the gas outlet of the fourth electromagnetic valve 11 is connected with a concentration detector 13 through the fourth gas guide pipeline 12, the fourth electromagnetic valve 11 is opened, so that the circulating gas enters the concentration detector 13 for concentration detection, and the fourth electromagnetic valve 11 is closed after the concentration detection is finished.
The vacuum pump 17 is connected with the reference cavity 5 through a seventh air guide pipeline 18, and the fifth electromagnetic valve 19 is fixedly arranged on the seventh air guide pipeline 18; the automatic controller 1 controls the vacuum pump 17 and the fifth electromagnetic valve 19 to be opened to vacuumize the reference cavity 5, and after the preset vacuum degree is reached, the automatic controller 1 controls the vacuum pump 17 and the fifth electromagnetic valve 19 to be closed to stop vacuuming. The pressure sensor 20 is fixedly arranged on the reference cavity 5 and used for detecting the pressure in the reference cavity 5.
The reference cavity 5, the gas circulating pump 15 and the sample tube 8 are connected with each other through a second air guide pipeline 7, a circulating air outlet pipe 9, a fifth air guide pipeline 14 and a sixth air guide pipeline 16 to form a gas circulating loop.
The concentration detector 13 may be a mass spectrometer, infrared, gas chromatograph, or the like.
The utility model discloses the during operation, the initial condition of all automatically controlled devices is in the closed condition. Firstly, the automatic controller 1 controls the vacuum pump 17 to start working, and simultaneously controls the fifth electromagnetic valve 19 and the second electromagnetic valve 6 to be opened, so as to carry out vacuum degassing treatment on the sample in the sample tube 8, after the vacuum degassing is finished, the automatic controller 1 controls the vacuum pump 17 to stop working, and simultaneously controls the fifth electromagnetic valve 19 and the second electromagnetic valve 6 to be closed. Then the automatic controller 1 controls the first electromagnetic valve 2 to open, the mixed gas in the mixed gas source 3 flows into the reference cavity 5 at a certain flow rate, the pressure sensor 20 monitors the pressure in the reference cavity 5, when the pressure reaches a preset pressure value, the automatic controller 1 controls the first electromagnetic valve 2 to close, and simultaneously controls the gas circulating pump 15, the second electromagnetic valve 6 and the third electromagnetic valve 10 to open, the gas circulating pump 15 drives the mixed adsorbate gas in the reference cavity 5 to circularly flow along the second gas guide pipeline 7, the circulating gas outlet pipe 9, the fifth gas guide pipeline 14 and the sixth gas guide pipeline 16, during the circulating flow of the mixed adsorbate gas, the adsorbent in the sample pipe 8 adsorbs the mixed adsorbate gas to reduce the pressure in the reference cavity 5, and when the pressure in the reference cavity 5 is in a stable state, the adsorbent and the adsorbate gas reach adsorption, And (3) desorbing dynamic balance, opening the fourth electromagnetic valve 11 to enable a certain amount of mixed adsorbate gas to flow into the concentration detector 13 for detecting the concentration of the mixed adsorbate gas so as to calculate the adsorption amount of the adsorbent to the mixed adsorbate gas, and then closing the second electromagnetic valve 6, the third electromagnetic valve 11, the fourth electromagnetic valve 11 and the gas circulating pump 15.
Then, the previous operation is repeated, mixed gas with a certain pressure is filled in the reference cavity 5, the gas circulation pump 15 controls the gas to flow circularly, and the concentration of the mixed adsorbate gas is detected by the concentration detector 13 after the pressure is stable. This is cycled through until the test is complete.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A static capacity method multi-component competitive adsorption analyzer comprising: the device comprises an automatic controller (1), a first electromagnetic valve (2), a mixed gas source (3), a first gas guide pipeline (4), a reference cavity (5), a second electromagnetic valve (6), a second gas guide pipeline (7), a sample tube (8), a circulating gas outlet pipe (9), a third electromagnetic valve (10), a fourth electromagnetic valve (11), a fourth gas guide pipeline (12), a concentration detector (13), a fifth gas guide pipeline (14), a gas circulating pump (15), a sixth gas guide pipeline (16), a vacuum pump (17), a seventh gas guide pipeline (18), a fifth electromagnetic valve (19) and a pressure sensor (20); the automatic control device is characterized in that the automatic controller (1) is respectively connected with the first electromagnetic valve (2), the second electromagnetic valve (6), the third electromagnetic valve (10), the fourth electromagnetic valve (11), the fifth electromagnetic valve (19), the gas circulating pump (15), the vacuum pump (17) and the pressure sensor (20) through leads, and the automatic controller (1) automatically controls the on and off of the first electromagnetic valve (2), the second electromagnetic valve (6), the third electromagnetic valve (10), the fourth electromagnetic valve (11), the fifth electromagnetic valve (19), the gas circulating pump (15), the vacuum pump (17) and the pressure sensor (20); the gas outlet of the mixed gas source (3) is connected with the reference cavity (5) through a first gas guide pipeline (4), and a first electromagnetic valve (2) is arranged on the first gas guide pipeline (4); the reference cavity (5) is connected with the sample tube (8) through a second air guide pipeline (7), and a second electromagnetic valve (6) is arranged on the second air guide pipeline (7); the gas inlet of the gas circulating pump (15) is connected with the reference cavity (5) through a sixth gas guide pipeline (16), the gas outlet of the gas circulating pump (15) is respectively connected with the gas inlet of a third electromagnetic valve (10) and the gas inlet of a fourth electromagnetic valve (11) through a fifth gas guide pipeline (14), and the gas outlet of the third electromagnetic valve (10) is connected with the sample tube (8) through a circulating gas outlet tube (9); the air inlet of the concentration detector (13) is connected with the air outlet of a fourth electromagnetic valve (11) through a fourth air guide pipeline (12); the vacuum pump (17) is connected with the reference cavity (5) through a seventh air guide pipeline (18), and the fifth electromagnetic valve (19) is fixedly arranged on the seventh air guide pipeline (18) through which the vacuum pump (17) is connected with the reference cavity (5); the pressure sensor (20) is fixedly arranged on the reference cavity (5).
2. The apparatus according to claim 1, wherein the reference chamber (5), the gas circulation pump (15), and the sample tube (8) are connected to each other through a second gas guide line (7), a circulation gas outlet line (9), a fifth gas guide line (14), and a sixth gas guide line (16) to form a gas circulation loop.
3. The apparatus according to claim 1, wherein the mixed gas source (3) is a steel cylinder or a gas distribution device filled with mixed gas.
4. The apparatus according to claim 1, wherein the gas circulation pump (15) has a high pressure-bearing capacity and is capable of circulating a high pressure gas.
5. The multi-component competitive adsorption analyzer according to claim 1, wherein the gas outlet of the circulation gas outlet pipe (9) is arranged at the bottom of the sample tube, so that the circulation of all the gas in the sample tube without dead angles is realized.
6. The apparatus according to claim 1, wherein the concentration detector (13) is a mass spectrometer or infrared spectrometer or gas chromatograph concentration detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020367383.7U CN211856490U (en) | 2020-03-23 | 2020-03-23 | Multi-component competitive adsorption analyzer by static volumetric method |
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| CN202020367383.7U CN211856490U (en) | 2020-03-23 | 2020-03-23 | Multi-component competitive adsorption analyzer by static volumetric method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175430A (en) * | 2020-03-23 | 2020-05-19 | 贝士德仪器科技(北京)有限公司 | Multi-component competitive adsorption analyzer by static volumetric method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175430A (en) * | 2020-03-23 | 2020-05-19 | 贝士德仪器科技(北京)有限公司 | Multi-component competitive adsorption analyzer by static volumetric method |
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