CN113996140A - Magnetic gas separation device, application thereof and magnetic gas separation method - Google Patents
Magnetic gas separation device, application thereof and magnetic gas separation method Download PDFInfo
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- CN113996140A CN113996140A CN202010739711.6A CN202010739711A CN113996140A CN 113996140 A CN113996140 A CN 113996140A CN 202010739711 A CN202010739711 A CN 202010739711A CN 113996140 A CN113996140 A CN 113996140A
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- gas separation
- oxygen
- chromatographic column
- gases
- magnetic
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 59
- 238000000926 separation method Methods 0.000 title claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 88
- 239000001301 oxygen Substances 0.000 claims abstract description 38
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 38
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000005298 paramagnetic effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000012159 carrier gas Substances 0.000 claims abstract description 7
- 230000005294 ferromagnetic effect Effects 0.000 claims description 7
- 238000004587 chromatography analysis Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000027734 detection of oxygen Effects 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005408 paramagnetism Effects 0.000 description 1
- 238000001179 sorption measurement 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/14—Preparation by elimination of some components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/18—Noble gases
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The application discloses magnetic gas separation device, its application and magnetic gas separation method, magnetic gas separation device include chromatographic column pipeline and strong magnet group, strong magnet group locates chromatographic column pipeline inner wall can form the magnetic field that is weakened by axle center to the inner wall by intensity in the chromatographic column pipeline. The detected gas enters the chromatographic column pipeline along with the carrier gas, because the oxygen has the paramagnetic characteristic, the oxygen stays at the strongest position of the central magnetic field of the chromatographic column pipeline after passing through a strong magnetic field and flows at a slower speed, and other gases respectively flow out at a faster speed near the pipeline wall of the chromatographic column pipeline with a weaker magnetic field, so that the oxygen and other gases are clearly separated, and the oxygen and other gases after separation are respectively detected by adopting a detection device. By adopting the scheme, the detection of oxygen and other gases is simple and convenient, and the possibility of absorbing or adsorbing other gases in the detection process is eliminated.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a magnetic gas separation device, application thereof and a magnetic gas separation method.
Background
The gas chromatograph is used for blowing quantitative mixed gas into a chromatographic column by using carrier gas, separating the mixed gas into single gas, sequentially flowing out of the chromatographic column and entering a detector, and realizing the measurement of each component of the mixed gas. The chromatographic column is used to separate mixed components based on the adsorption, desorption and interaction between the chromatographic column and the separated component molecules.
Separation of oxygen from other gases is currently a difficult task, for example, separation of oxygen and argon is difficult. Therefore, when the purity of some gases is measured, oxygen and argon are generally combined for measurement, and a deoxygenation trap and a carbon molecular sieve packed chromatographic column are used for separation, but the method can absorb or adsorb other components simultaneously, so that the measurement of other components is difficult.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a magnetic gas separation device, applications thereof, and a magnetic gas separation method.
In order to overcome the defects of the prior art, the technical scheme provided by the invention is as follows:
in a first aspect, the present invention provides a magnetic gas separation apparatus, including a chromatography column conduit and a strong magnet set, where the strong magnet set is disposed on an inner wall of the chromatography column conduit, and is capable of forming a magnetic field in the chromatography column conduit, the magnetic field having a strength weakened from an axial center to the inner wall.
In one embodiment, the set of magnets comprises two rows of magnets distributed along different generatrices of the column tubing, the opposing sides of the two rows of magnets being oppositely magnetized.
In one embodiment, each column of ferromagnetic bodies comprises a plurality of ferromagnetic bodies arranged in a line, a plurality of said ferromagnetic bodies being distributed from one end of the chromatography column conduit to the other.
In one embodiment, the strong magnet is a permanent magnet or an electromagnet.
In one embodiment, the permanent magnet is trapezoidal in shape.
In a second aspect, the present invention provides a use of the magnetic gas separation device described above for gas detection.
In a third aspect, the present invention provides a magnetic gas separation method implemented using the magnetic gas separation apparatus described above, the method comprising:
carrying the measured gas with the carrier gas with constant flow rate to be conveyed into a chromatographic column pipeline together;
under the action of a strong magnetic field generated by a strong magnet group, paramagnetic oxygen is retained in the pipeline at a first speed, and non-paramagnetic other gases flow at a second speed, wherein the second speed is higher than the first speed, so that the oxygen and the other gases are separated to measure the content of the oxygen and the other gases.
Compared with the prior art, the invention has the beneficial effects that:
according to the technical scheme that this application embodiment provided, including chromatographic column pipeline and strong magnet group, strong magnet group locates chromatographic column pipeline inner wall can form the magnetic field that is weakened by the axle center to the inner wall by intensity in the chromatographic column pipeline. The detected gas enters the chromatographic column pipeline along with the carrier gas, because the oxygen has the paramagnetic characteristic, the oxygen stays at the strongest position of the central magnetic field of the chromatographic column pipeline after passing through a strong magnetic field and flows at a slower speed, and other gases respectively flow out at a faster speed near the pipeline wall of the chromatographic column pipeline with a weaker magnetic field, so that the oxygen and other gases are clearly separated, and the oxygen and other gases after separation are respectively detected by adopting a detection device. By adopting the scheme, the detection of oxygen and other gases is simple and convenient, and the possibility of absorbing or adsorbing other gases in the detection process is eliminated.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a magnetic gas separation device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a magnetic gas separation method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a magnetic gas separation device according to an embodiment of the present invention applied to gas detection.
In the figure: 1-chromatographic column pipeline, 2-strong magnet, 3-oxygen, 4-other gases, 5-sampling device and 6-detection device.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As mentioned in the background, separation of oxygen from other gases is currently difficult, for example, separation of oxygen from argon is difficult. Therefore, when the purity of some gases is measured, oxygen and argon are generally combined for measurement, and a deoxygenation trap and a carbon molecular sieve packed chromatographic column are used for separation, but the method can absorb or adsorb other components simultaneously, so that the measurement of other components is difficult.
Therefore, it would be an improvement in the present application to eliminate the possibility of absorbing or adsorbing other gases during the detection process, and to simply and accurately detect oxygen and other gases. In view of the above, the present application provides a magnetic gas separation device, applications thereof, and a magnetic gas separation method.
The magnetic element with special design is adopted to form the magnetic gas separation device, and the oxygen is clearly separated from other gases in the magnetic gas separation device by utilizing the paramagnetism of the oxygen, so that a deoxidation trap and a carbon molecular sieve chromatographic column can be replaced, and the measurement deviation of other components can not be caused.
Fig. 1 shows a structure of a magnetic gas separation device provided in an embodiment of the present application.
As shown in fig. 1, the magnetic gas separator includes a column tube 1 and a ferromagnetic member group disposed on an inner wall of the column tube 1, and is capable of forming a magnetic field whose strength decreases from an axial center to the inner wall in the column tube 1.
Because the oxygen 3 has paramagnetic characteristics, the oxygen stays at the strongest position of the central magnetic field of the chromatographic column pipeline 1 after passing through a strong magnetic field and flows at a slower speed, and other gases 4 flow out at a faster speed near the pipe wall of the chromatographic column pipeline 1 with a weaker magnetic field respectively, so that the oxygen 3 and other gases 4 are clearly separated.
The strong magnet group comprises two lines of strong magnets 2 distributed along different buses of the chromatographic column pipeline 1, and the opposite sides of the two lines of strong magnets 2 are opposite in magnetism.
Further, each row of strong magnets 2 comprises a plurality of strong magnets 2 arranged on a straight line, and the strong magnets 2 are distributed to the other end from one end of the chromatographic column pipeline 1. The plurality of strong magnets 2 are arranged at intervals, and the interval distance is adjusted according to the magnetic field intensity required in the gas separation process.
Specifically, the distance between two rows of strong magnets 2 is the diameter of the chromatographic column pipeline 1, the two rows of strong magnets 2 both include an N pole and an S pole, and if one side of one row of strong magnets 2 close to the axis of the chromatographic column pipeline 1 is the N pole, the other side of the other row of strong magnets 2 close to the axis of the chromatographic column pipeline 1 is the S pole.
In order to ensure that the magnetic field with the strength weakened from the axis to the inner wall is formed in the chromatographic column tube 1, the permanent magnet is in the shape of a trapezoid, so that the magnetic field formed from the N pole of one row of strong magnets 2 to the S pole of the other row of strong magnets 2 just meets the requirement.
The strong magnet 2 adopts a permanent magnet or an electromagnet. The permanent magnet may be a magnet and the electromagnet may be an energized helical coil.
In the present embodiment, the magnetic gas separation device described above is mainly applied to gas detection, and the detected gas is separated to ensure that the oxygen 3 and the other gas 4 are clearly separated.
Fig. 2 shows a specific flow of a magnetic gas separation method provided in an embodiment of the present application. As shown in fig. 2, the method includes:
and 20, under the action of a strong magnetic field generated by the strong magnet group, paramagnetic oxygen 3 is retained in the pipeline at a first speed, and non-paramagnetic other gases 4 flow at a second speed, wherein the second speed is higher than the first speed, so that the oxygen 3 and the other gases 4 are separated to measure the content of the oxygen 3 and the other gases 4.
Fig. 3 is a schematic diagram illustrating an application of the magnetic gas separation device in gas detection, and as shown in fig. 3, the application process includes:
the carrier gas with constant flow carries the measured gas to a magnetic gas separation device through a sampling device 5;
under the action of a strong magnetic field generated by a strong magnet group, paramagnetic oxygen 3 is retained in the pipeline at a first speed, and non-paramagnetic other gases 4 flow at a second speed, wherein the second speed is higher than the first speed, so that the oxygen 3 and the other gases 4 are separated;
the contents of the oxygen 3 and the other gases 4 are respectively analyzed, the other gases 4 enter another separation chromatographic column through switching, and the contents of the other gases 4 are measured through a detection device corresponding to the separation chromatographic column.
If the oxygen content needs to be measured, the oxygen 3 is switched according to the time sequence and enters the detection device 6 for measurement. If the oxygen content does not need to be measured, oxygen is blown out.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. The magnetic gas separation device is characterized by comprising a chromatographic column pipeline and a strong magnet group, wherein the strong magnet group is arranged on the inner wall of the chromatographic column pipeline and can form a magnetic field with the strength weakened from an axis to the inner wall in the chromatographic column pipeline.
2. The magnetic gas separation device of claim 1, wherein the set of magnets comprises two rows of magnets distributed along different generatrices of the conduit of the chromatography column, the opposing sides of the two rows of magnets being oppositely magnetized.
3. The magnetic gas separation device of claim 2, wherein each column of ferromagnetic bodies comprises a plurality of ferromagnetic bodies arranged in a line, the plurality of ferromagnetic bodies being distributed from one end of the conduit of the chromatography column to the other end.
4. The magnetic gas separation device of claim 3, wherein the strong magnet is a permanent magnet or an electromagnet.
5. A magnetic gas separation device according to claim 3, characterized in that the permanent magnet is trapezoidal in shape.
6. Use of a magnetic gas separation device according to any of claims 1 to 5 for gas detection.
7. A magnetic gas separation method implemented using the magnetic gas separation device according to any one of claims 1 to 5, characterized in that the method comprises:
carrying the measured gas with the carrier gas with constant flow rate to be conveyed into a chromatographic column pipeline together;
under the action of a strong magnetic field generated by a strong magnet group, paramagnetic oxygen is retained in the pipeline at a first speed, and non-paramagnetic other gases flow at a second speed, wherein the second speed is higher than the first speed, so that the oxygen and the other gases are separated to measure the content of the oxygen and the other gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739711.6A CN113996140A (en) | 2020-07-28 | 2020-07-28 | Magnetic gas separation device, application thereof and magnetic gas separation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739711.6A CN113996140A (en) | 2020-07-28 | 2020-07-28 | Magnetic gas separation device, application thereof and magnetic gas separation method |
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| Publication Number | Publication Date |
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| CN113996140A true CN113996140A (en) | 2022-02-01 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704139A (en) * | 1985-09-11 | 1987-11-03 | Hitachi, Ltd. | Method and apparatus for separating gases |
| CN2215352Y (en) * | 1994-05-15 | 1995-12-20 | 苏斌 | Air magnetic separator |
| JP2005118731A (en) * | 2003-10-20 | 2005-05-12 | Shunji Nishi | Oxygen enrichment device |
| US20050258354A1 (en) * | 2004-05-24 | 2005-11-24 | Hitachi High-Technologies Corporation | Mass spectrometer |
| CN1762792A (en) * | 2005-08-17 | 2006-04-26 | 北京科技大学 | Device and method for enriching oxygen in air using magnetic force |
| CN1837030A (en) * | 2006-04-18 | 2006-09-27 | 三峡大学 | Paramagnetic laminar-flow self-aggregation type oxygen enrichment device |
| CN101219321A (en) * | 2007-10-08 | 2008-07-16 | 北京科技大学 | Device and method for implementing oxygen concentration in air by using magnetic conduction heel piece to reinforcing laminated magnet array |
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| CN207271421U (en) * | 2017-07-25 | 2018-04-27 | 中国大唐集团科学技术研究院有限公司华北分公司 | Aeromagnetic separates oxygenerator |
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-
2020
- 2020-07-28 CN CN202010739711.6A patent/CN113996140A/en active Pending
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| CN2215352Y (en) * | 1994-05-15 | 1995-12-20 | 苏斌 | Air magnetic separator |
| JP2005118731A (en) * | 2003-10-20 | 2005-05-12 | Shunji Nishi | Oxygen enrichment device |
| US20050258354A1 (en) * | 2004-05-24 | 2005-11-24 | Hitachi High-Technologies Corporation | Mass spectrometer |
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| CN1837030A (en) * | 2006-04-18 | 2006-09-27 | 三峡大学 | Paramagnetic laminar-flow self-aggregation type oxygen enrichment device |
| CN101219321A (en) * | 2007-10-08 | 2008-07-16 | 北京科技大学 | Device and method for implementing oxygen concentration in air by using magnetic conduction heel piece to reinforcing laminated magnet array |
| CN101502739A (en) * | 2009-02-09 | 2009-08-12 | 河南省中分仪器有限公司 | Nti-pollution chromatographic column for separating oxygen and nitrogen |
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