CN114797367A - Device and method for testing and evaluating low-temperature adsorption performance of adsorbent - Google Patents
Device and method for testing and evaluating low-temperature adsorption performance of adsorbent Download PDFInfo
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- CN114797367A CN114797367A CN202210282049.5A CN202210282049A CN114797367A CN 114797367 A CN114797367 A CN 114797367A CN 202210282049 A CN202210282049 A CN 202210282049A CN 114797367 A CN114797367 A CN 114797367A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 100
- 239000003463 adsorbent Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 title claims description 14
- 230000008929 regeneration Effects 0.000 claims abstract description 72
- 238000011069 regeneration method Methods 0.000 claims abstract description 72
- 239000002156 adsorbate Substances 0.000 claims abstract description 18
- 238000011056 performance test Methods 0.000 claims abstract description 8
- 238000011156 evaluation Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 92
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 238000003795 desorption Methods 0.000 claims description 9
- 239000001307 helium Substances 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000000746 purification Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940110728 nitrogen / oxygen Drugs 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/416—Further details for adsorption processes and devices involving cryogenic temperature treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
A low-temperature adsorption performance test and evaluation device for an adsorbent comprises an adsorption gas source, a regeneration gas source, a precooling Dewar, an adsorption heater, an adsorber, a reheater, a regeneration heater and an analyzer which are connected with one another through pipelines, wherein the adsorption gas source is sequentially connected with the precooling Dewar, the adsorption heater, the adsorber, the reheater and the analyzer, and a tail gas treatment system is arranged behind the reheater; the regeneration gas source is sequentially connected with the regeneration heater, the adsorber, the cooler and the analyzer, a tail gas treatment system is arranged behind the cooler, and the adsorber is also provided with a vacuum pump for vacuum regeneration of the adsorber. The method has the advantages of simple flow, convenient operation, capability of being closer to the actual industrial situation than a static adsorption experiment, capability of easily realizing the adjustment of the types, the types and the content of the adsorbates, the adsorption temperature and the regeneration temperature, and wide application range.
Description
Technical Field
The invention relates to a device and a method for testing low-temperature adsorption performance of an adsorbent, and belongs to the field of low-temperature adsorption.
Background
Adsorption purification is one of the most widely used purification methods in industry, and includes pressure swing adsorption and temperature swing adsorption. At present, the adsorption and purification in practical industrial application is mainly limited to normal temperature or high temperature adsorption, but has the defects of low adsorption quantity, large adsorbent consumption, difficulty in removing nitrogen and methane impurities and the like. Low temperature adsorption is a novel adsorption purification mode for adsorption at very low temperature. Under the low temperature state, the adsorbent can obviously promote the adsorption capacity of the impurity gas, and more importantly, the adsorbent can adsorb impurities such as nitrogen, methane and the like which can not be removed at normal temperature. Because the popularization and application of the low-temperature adsorption are still in the initial stage, related researches are few, especially the low-temperature adsorption performance of the adsorbent is quite lack of determination and evaluation, and a means for evaluating the low-temperature adsorption performance of the adsorbent is urgently needed to be established.
The invention introduces a device and a method for testing and evaluating the low-temperature adsorption performance of an adsorbent, which can determine data such as dynamic adsorption curves and dynamic adsorption quantity of various adsorbents to an adsorption gas source with specified adsorbate content at specified low temperature, deeply evaluate the application potential of the adsorbents in an actual industrial scene, and lay a foundation for popularization of low-temperature adsorption industrial application. The method has the advantages of simple flow, convenient operation, capability of being closer to the actual industrial situation than a static adsorption experiment, capability of easily realizing the adjustment of the types, the types and the content of the adsorbates, the adsorption temperature and the regeneration temperature, and wide application range.
Disclosure of Invention
The invention aims to provide a device for testing and evaluating low-temperature adsorption performance of an adsorbent. The device can be used for measuring data such as dynamic adsorption curves and dynamic adsorption capacity of various adsorbents to an adsorption gas source with specified adsorbate content at specified low temperature, deeply evaluating the application potential of the adsorbents in an actual industrial scene, and providing data support and guidance for industrial application of the adsorbents.
In order to realize the purpose, the invention adopts the following technical scheme to realize the purpose: the invention discloses a low-temperature adsorption performance test and evaluation device for an adsorbent, which comprises an adsorption gas source, a regeneration gas source, a precooling dewar, an adsorption heater, an adsorber, a reheater, a regeneration heater and an analyzer, which are connected with each other through pipelines, wherein the adsorption gas source is sequentially connected with the precooling dewar, the adsorption heater, the adsorber, the reheater and the analyzer, and a tail gas treatment system is arranged behind the reheater; the regeneration air source is connected with the regeneration heater, the adsorber, the cooler and the analyzer in sequence, and a tail gas treatment system is arranged behind the cooler, the tail gas treatment system can adopt high-point emptying, high-point combustion and harmless treatment, the adsorber is also provided with a vacuum pump outside and is used for vacuum regeneration of the adsorber, an adsorption air source outlet is provided with a pressure gauge and a flow meter, a liquid level meter is arranged in the precooling dewar, a thermometer, a pressure gauge and a differential pressure meter are arranged at an inlet and an outlet of the adsorber, the regeneration air source outlet is provided with a pressure gauge and a flow meter, and a thermometer is arranged at an outlet of the regeneration heater. Preferably, the method comprises the following steps: the adsorption gas source is a mixed gas consisting of two or more adsorbates, and the regeneration gas source is selected from nitrogen, argon and helium. Preferably, the method comprises the following steps: the pre-cooling Dewar comprises a Dewar tank and a pre-cooling coil, and the adopted pre-cooling medium can be one of liquid nitrogen, liquid argon, liquid oxygen, liquid neon, liquid hydrogen, liquid helium and mixed refrigerant according to different temperature requirements. Preferably, the method comprises the following steps: the outside parcel heat insulating material of adsorber avoids cold volume loss, and this heat insulating material detachable installs in the outside of adsorber, conveniently dismantles and changes, can fill one or more adsorbent in this adsorber simultaneously.
A use method of the device for testing and evaluating the low-temperature adsorption performance of the adsorbent comprises the following specific steps: 1) And an adsorption gas source and a regeneration gas source are configured according to the performance test requirements of the adsorbent, and the adsorber is filled with the adsorbent and then is installed at the corresponding position of the device. The initial composition of the adsorbed gas source was detected and recorded with an analyzer. 2) An adsorption process: the adsorption gas source is cooled to low temperature by low-temperature medium in the precooling dewar, the low-temperature gas is adjusted to the required temperature by the adsorption heater and then enters the adsorber, the low-temperature gas is re-heated to normal temperature by the reheater after being adsorbed by the adsorbent in the adsorber, most of the low-temperature gas enters the tail gas treatment system, and a small part of the low-temperature gas enters the analyzer for component analysis. The analyzer samples once every certain time, records and observes the adsorption condition of the adsorbent, and considers that the adsorbent is adsorbed and saturated when the tail gas composition is consistent with the initial composition of the adsorbed gas source. The adsorption performance and the dynamic adsorption capacity of the adsorbent can be obtained through a dynamic adsorption curve. 3) And (3) a regeneration process: after the adsorbent is saturated, the adsorbent needs to be regenerated. The adsorbent regeneration can adopt temperature swing regeneration and pressure swing regeneration. When temperature-changing regeneration is adopted, a regeneration gas source is heated to a specified temperature through a regeneration heater, hot regeneration gas reversely enters from an outlet of an adsorber to complete desorption of adsorbate and bring the adsorbate out of the adsorber, and after regeneration tail gas is cooled to normal temperature through a cooler, most of the regeneration tail gas enters a tail gas treatment system, and a small part of the regeneration tail gas enters an analyzer for component analysis. When pressure swing regeneration is adopted, the valves of the outlet of the adsorber and the outlet of the adsorption heater are closed, the vacuum pump is opened to vacuumize the adsorber, and the analyzer is used for detecting and recording the tail gas composition change of the vacuum pump. The analyzer samples once every certain time, records and observes the desorption condition of the adsorbent, and considers that the adsorbent is completely regenerated when the adsorbate can not be detected in the tail gas. The regeneration performance of the adsorbent can be obtained through a dynamic desorption curve. 4) After the test is finished, the gas in the device needs to be evacuated and replaced by nitrogen or argon, so that the safety of the device is ensured.
According to the invention, through the low-temperature adsorption performance test and evaluation device of the adsorbent, data such as dynamic adsorption curves and dynamic adsorption capacity of various adsorbents at specified low temperature to an adsorption gas source with specified adsorbate content can be determined, and the application potential of the adsorbent in an actual industrial scene can be deeply evaluated.
The method has the advantages of simple flow, convenient operation, capability of being closer to the actual industrial situation than a static adsorption experiment, capability of easily realizing the adjustment of the types, the types and the content of the adsorbates, the adsorption temperature and the regeneration temperature, and wide application range.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be described in detail below with reference to the following figures: the invention will be described in detail below with reference to the following drawings: as shown in fig. 1, an adsorbent low-temperature adsorption performance test evaluation device includes an adsorption gas source 1, a regeneration gas source 2, a precooling dewar 3, an adsorption heater 4, an adsorber 5, a reheater 6, a regeneration heater 7, and an analyzer 8, which are connected with each other through a pipeline, wherein the adsorption gas source 1 is connected with the precooling dewar 3, the adsorption heater 4, the adsorber 5, the reheater 6, and the analyzer 8 in sequence, and a tail gas treatment system is arranged behind the reheater 6; the regeneration air source 2 is sequentially connected with a regeneration heater 7, an adsorber 5, a cooler 9 and an analyzer 8, a tail gas treatment system is arranged behind the cooler 9, the tail gas treatment system can adopt modes such as high-point emptying, high-point combustion, innocent treatment and the like, the adsorber 5 is also provided with a vacuum pump 10 for vacuum regeneration of the adsorber 5, an outlet of the adsorption air source 1 is provided with a pressure gauge and a flow meter, a liquid level meter is arranged in the precooling dewar 3, a thermometer, a pressure gauge and a pressure difference meter are arranged at an inlet and an outlet of the adsorber 5, an outlet of the regeneration air source 2 is provided with a pressure gauge and a flow meter, and an outlet of the regeneration heater 7 is provided with a thermometer. The adsorption gas source 1 is a mixed gas composed of two or more adsorbates, and the regeneration gas source 2 is selected from nitrogen, argon, helium and the like.
In this embodiment, the adsorption gas source 2 is preferably hydrogen containing ppm of one or more adsorbates of methane/nitrogen/oxygen, and the regeneration gas source 2 is preferably argon. The temperature of the adsorption gas source 2 from the pre-cooling Dewar 3 is about 80K, and the adsorption heater 4 is not started.
The precooling dewar 3 comprises a dewar tank and a precooling coil, and the adopted precooling medium can be one of liquid nitrogen, liquid argon, liquid oxygen, liquid neon, liquid hydrogen, liquid helium and mixed refrigerant according to different temperature requirements. The heat-insulating material is wrapped outside the absorber 5, so that the loss of cold energy is avoided, the heat-insulating material is detachably arranged outside the absorber, the disassembly and the replacement are convenient, and one or more adsorbents can be filled in the absorber 5 at the same time.
A use method of the device for testing and evaluating the low-temperature adsorption performance of the adsorbent comprises the following specific steps: 1) An adsorption gas source 1 and a regeneration gas source 2 are configured according to the performance test requirements of the adsorbent, and an adsorber 5 is filled with the adsorbent and then is installed at the corresponding position of the device. The initial composition of the adsorbed gas source is detected and recorded by analyzer 8. 2) An adsorption process: the adsorption gas source 1 is cooled to a low temperature by a low-temperature medium in the precooling dewar 3, the low-temperature gas is adjusted to a required temperature by an adsorption heater and then enters an adsorber, the low-temperature gas is adsorbed by an adsorbent in the adsorber and then is reheated to a normal temperature by a reheater, most of the low-temperature gas enters a tail gas treatment system, and a small part of the low-temperature gas enters an analyzer 8 for component analysis. The analyzer samples once every certain time, records and observes the adsorption condition of the adsorbent, and considers that the adsorbent is adsorbed and saturated when the tail gas composition is consistent with the initial composition of the adsorbed gas source. The adsorption performance and the dynamic adsorption capacity of the adsorbent can be obtained through a dynamic adsorption curve. 3) And (3) a regeneration process: after the adsorbent is saturated, the adsorbent needs to be regenerated. The adsorbent regeneration can adopt temperature swing regeneration and pressure swing regeneration. When temperature-changing regeneration is adopted, a regeneration gas source 2 is heated to a specified temperature through a regeneration heater, hot regeneration gas reversely enters from an outlet of an adsorber 5 to complete desorption of adsorbates and bring the adsorbates out of the adsorber, after regeneration tail gas is cooled to normal temperature through a cooler 9, most of the regeneration tail gas enters a tail gas treatment system, and a small part of the regeneration tail gas enters an analyzer for component analysis. When pressure swing regeneration is adopted, the valve of the outlet of the adsorber 5 and the outlet of the adsorption heater 4 are closed, the vacuum pump 10 is opened to vacuumize the adsorber 5, and the analyzer 8 is used for detecting and recording the tail gas composition change of the vacuum pump. The analyzer 8 samples once at regular intervals, records and observes the desorption condition of the adsorbent, and considers that the adsorbent is completely regenerated when the adsorbent cannot be detected in the tail gas. The regeneration performance of the adsorbent can be obtained through a dynamic desorption curve. 4) After the test is finished, the gas in the device needs to be evacuated and replaced by nitrogen or argon, so that the safety of the device is ensured.
The above description is only for the preferred embodiment of the present invention, but the 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 also included in the scope of the present invention.
Claims (5)
1. The utility model provides an adsorbent low temperature adsorption performance test evaluation device, includes adsorption air supply, regeneration air supply, precooling dewar, adsorption heater, adsorber, double heater, regeneration heater, analysis appearance, is connected through the pipeline each other, its characterized in that: the adsorption gas source is sequentially connected with the precooling dewar, the adsorption heater, the adsorber, the reheater and the analyzer, and a tail gas treatment system is arranged behind the reheater; the regeneration air source is connected with the regeneration heater, the adsorber, the cooler and the analyzer in sequence, and a tail gas treatment system is arranged behind the cooler, the tail gas treatment system can adopt high-point emptying, high-point combustion and harmless treatment, the adsorber is also provided with a vacuum pump outside and is used for vacuum regeneration of the adsorber, an adsorption air source outlet is provided with a pressure gauge and a flow meter, a liquid level meter is arranged in the precooling dewar, a thermometer, a pressure gauge and a differential pressure meter are arranged at an inlet and an outlet of the adsorber, the regeneration air source outlet is provided with a pressure gauge and a flow meter, and a thermometer is arranged at an outlet of the regeneration heater.
2. The apparatus for testing and evaluating low-temperature adsorption performance of an adsorbent according to claim 1, wherein: the adsorption gas source is a mixed gas consisting of two or more adsorbates, and the regeneration gas source is selected from nitrogen, argon and helium.
3. The apparatus for testing and evaluating low-temperature adsorption performance of an adsorbent according to claim 1, wherein: the pre-cooling Dewar comprises a Dewar tank and a pre-cooling coil, and the adopted pre-cooling medium is one of liquid nitrogen, liquid argon, liquid oxygen, liquid neon, liquid hydrogen, liquid helium and mixed refrigerant according to different temperature requirements.
4. The apparatus for testing and evaluating low-temperature adsorption performance of an adsorbent according to claim 1, wherein: the outside parcel heat insulating material of adsorber avoids cold volume loss, and this heat insulating material detachable installs in the outside of adsorber, conveniently dismantles and changes, can fill one or more adsorbent in this adsorber simultaneously.
5. The use method of the device for testing and evaluating the low-temperature adsorption performance of the adsorbent according to claims 1 to 4 comprises the following specific steps:
1) configuring an adsorption gas source and a regeneration gas source according to the performance test requirements of the adsorbent, filling the adsorbent in an adsorber, installing the adsorber to a corresponding position of the device, and detecting and recording the initial composition of the adsorption gas source by using an analyzer;
2) an adsorption process: an adsorption gas source is cooled to a low temperature by a low-temperature medium in a precooling dewar, low-temperature gas is adjusted to a required temperature by an adsorption heater and then enters an adsorber, the low-temperature gas is adsorbed by an adsorbent in the adsorber and then is reheated to a normal temperature by a reheater, most of the low-temperature gas enters a tail gas treatment system, a small part of the low-temperature gas enters an analyzer for component analysis, the analyzer samples once at regular intervals, the adsorption condition of the adsorbent is recorded and observed, when the tail gas composition is consistent with the initial composition of the adsorption gas source, the adsorbent is considered to be adsorbed and saturated, and the adsorption performance and the dynamic adsorption capacity of the adsorbent are obtained through a dynamic adsorption curve;
3) and (3) a regeneration process: after the adsorbent is saturated, the adsorbent needs to be regenerated, the adsorbent can be regenerated by adopting temperature swing regeneration and pressure swing regeneration, when the temperature swing regeneration is adopted, the regeneration gas source is heated to a designated temperature by the regeneration heater, the hot regeneration gas reversely enters from the outlet of the adsorber to complete the desorption of the adsorbate and bring the adsorbate out of the adsorber, the regeneration tail gas is cooled to normal temperature by the cooler, most of the tail gas enters a tail gas treatment system, and the small part of the tail gas enters an analyzer for component analysis, when pressure swing regeneration is adopted, closing valves of an outlet of the adsorber and an outlet of the adsorption heater, opening a vacuum pump to vacuumize the adsorber, detecting and recording the composition change of tail gas of the vacuum pump by using an analyzer, sampling once by the analyzer at regular intervals, recording and observing the desorption condition of the adsorbent, when the adsorbate cannot be detected in the tail gas, the adsorbent is considered to be completely regenerated, and the regeneration performance of the adsorbent is obtained through a dynamic desorption curve;
4) after the test is finished, the gas in the device needs to be evacuated and replaced by nitrogen or argon, so that the safety of the device is ensured.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN116626246A (en) * | 2023-07-24 | 2023-08-22 | 四川空分设备(集团)有限责任公司 | Low-temperature adsorption testing device and testing method thereof |
CN116699079A (en) * | 2023-08-08 | 2023-09-05 | 四川空分设备(集团)有限责任公司 | Ultralow-temperature gas experiment platform and working method thereof |
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CN107930340A (en) * | 2017-11-29 | 2018-04-20 | 西南化工研究设计院有限公司 | Test the temperature swing adsorption system and method for volatile organic matter adsorbance and desorption quantity |
CN113264506A (en) * | 2021-06-24 | 2021-08-17 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Hydrogen low-temperature adsorber regeneration process of hydrogen liquefaction device |
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CN201110847Y (en) * | 2007-12-14 | 2008-09-03 | 重庆大学 | Adsorbing agent voltage transformation adsorptive separation performance test and infiltration flow experimental device |
CN105136922A (en) * | 2015-08-16 | 2015-12-09 | 常州大学 | Adsorbent performance dynamic detection device |
CN107930340A (en) * | 2017-11-29 | 2018-04-20 | 西南化工研究设计院有限公司 | Test the temperature swing adsorption system and method for volatile organic matter adsorbance and desorption quantity |
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CN116626246A (en) * | 2023-07-24 | 2023-08-22 | 四川空分设备(集团)有限责任公司 | Low-temperature adsorption testing device and testing method thereof |
CN116626246B (en) * | 2023-07-24 | 2023-10-20 | 四川空分设备(集团)有限责任公司 | Low-temperature adsorption testing device and testing method thereof |
CN116699079A (en) * | 2023-08-08 | 2023-09-05 | 四川空分设备(集团)有限责任公司 | Ultralow-temperature gas experiment platform and working method thereof |
CN116699079B (en) * | 2023-08-08 | 2023-11-24 | 四川空分设备(集团)有限责任公司 | Ultralow-temperature gas experiment platform and working method thereof |
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