CN104597156B - Dual column system gas chromatograph - Google Patents

Dual column system gas chromatograph Download PDF

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Publication number
CN104597156B
CN104597156B CN201510019909.6A CN201510019909A CN104597156B CN 104597156 B CN104597156 B CN 104597156B CN 201510019909 A CN201510019909 A CN 201510019909A CN 104597156 B CN104597156 B CN 104597156B
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Prior art keywords
transfer valve
number interface
valve
chromatographic column
transfer
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CN201510019909.6A
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CN104597156A (en
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庄鸿涛
郁光
方华
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SHANGHAI HUAAI CHROMATOGRAPHIC ANALYSIS CO Ltd
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SHANGHAI HUAAI CHROMATOGRAPHIC ANALYSIS CO Ltd
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Abstract

The present invention is a kind of dual column system gas chromatograph, it is characterized in that: the first transfer valve of described gas chromatograph is provided with the first quantity tube and the second quantity tube; The second transfer valve is provided with the first chromatographic column and the second chromatographic column; The 3rd transfer valve is provided with the first needle-valve, the second needle-valve and PDD helium ionization detector. The present invention adopts two root chromatogram columns, by the independent analysis of two root chromatogram columns and common analysis are realized to characteristic research and the contrast experiment to chromatographic column better.

Description

Dual column system gas chromatograph
Technical field
The present invention relates to a kind of gas chromatograph, particularly disclose a kind of dual column system gas chromatograph, to gas productsAnalysis adopt two root chromatogram columns, the independent analysis by two root chromatogram columns and common analysis realize the spy to chromatographic column betterJournal of Sex Research and contrast experiment.
Background technology
Along with industrial high speed development, the application of various gases is also more extensive. Increasing gas need to divideAnalyse detection. Piece-rate system is the core of gas-chromatography, is mainly made up of chromatographic column. For different gas analyses, need differenceChromatographic column separate. The analytical method of current many gases is international and domesticly have many imperfections, a lot of special gasDo not have good chromatographic column to separate yet. Seek corresponding chromatographic column and analytical method imperative.
Summary of the invention
The object of the invention is to address the deficiencies of the prior art, design a kind of dual column system gas chromatograph, adopt twoChromatographic column, on a chromatograph, can realize quickly and easily independent analysis to the first chromatographic column, the second chromatographic column andThe analysis that two chromatographic columns are common. The present invention studies by the independence to different chromatographic columns and the analysis that mutually combines, canBright and clear separating effect and the contrast effect of various chromatographic columns to gas of finding out directly perceived, to realize better the characteristic to chromatographic columnResearch.
The present invention is achieved in that a kind of dual column system gas chromatograph, it is characterized in that: described gas chromatographThe first transfer valve is provided with the first quantity tube and the second quantity tube; The second transfer valve is provided with the first chromatographic column and the second chromatogramPost; The 3rd transfer valve is provided with the first needle-valve, the second needle-valve and PDD helium ionization detector.
As preferably, the first carrier gas gas circuit is connected with the 8. number interface of the first transfer valve, the second carrier gas gas circuit and first is cutThe 4. number interface that changes valve connects; Sample inlet is connected with the 2. number interface of the first transfer valve, sample export and the first transfer valve1. number interface connects; First quantity tube one end is connected with the 10. number interface of the first transfer valve, the other end and the first transfer valve 7.Number interface connects; Second quantity tube one end is connected with the 3. number interface of the first transfer valve, the other end and the first transfer valve 6. numberInterface connects; 5. number interface of the first transfer valve and the 6. number interface of the second transfer valve with pipeline be connected, the first transfer valve 9.2. number interface of number interface and the second transfer valve is connected with pipeline.
As preferably, the 1. number interface of the second described transfer valve is connected with first chromatographic column one end, the second transfer valve4. number interface is connected with the first chromatographic column other end; 5. number interface of the second transfer valve is connected with second chromatographic column one end, and the 3rd6. number interface of transfer valve is connected with the second chromatographic column other end; 3. number interface of the second transfer valve and the 3rd transfer valve 2. numberInterface connects with pipeline.
As preferably, the 3. number interface of the 3rd described transfer valve is connected with the first needle-valve, 5. number the connecing of the 3rd transfer valveMouth is connected with the second needle-valve; 1. number interface of the 3rd transfer valve is connected with PDD helium ionization detector.
As preferably, the first described transfer valve is ten logical pneumatic transfer valve, the second described transfer valves and the 3rd of purgingTransfer valve is the pneumatic transfer valve of six logical purgings.
The invention has the beneficial effects as follows: the present invention utilizes the switching of the first transfer valve, the second transfer valve, the 3rd transfer valve to changeChange system gas circuit, realizes the independent analysis to the first chromatographic column and the second chromatographic column, can be also the common analysis to both, canJointly analyze to find out intuitively the independent analysis of the first chromatographic column or the second chromatographic column and the first chromatographic column and the second chromatographic columnDifference, can be also the contrast experiment who does the first chromatographic column and the second chromatographic column. Also can pass through in actual applicationsThe present invention analyzes gas like multiple types.
Brief description of the drawings
Fig. 1 is sample introduction analysis process schematic diagram of the present invention.
Fig. 2 is the schematic flow sheet that in the present invention, analytical gas enters the first chromatographic column and the second chromatographic column.
Fig. 3 is the schematic flow sheet that analytical gas of the present invention enters separately the second chromatographic column.
Fig. 4 is the schematic flow sheet that analytical gas of the present invention enters separately the first chromatographic column.
In figure: 1, the first transfer valve; 2, the second transfer valve; 3, the 3rd transfer valve; 4, the first carrier gas; 5, second yearGas; 6, the first quantity tube; 7, the second quantity tube; 8, sample inlet; 9, sample export; 10, PDD helium ionization detector;11, the first chromatographic column; 12, the second chromatographic column; 13, the first needle-valve; 14, the second needle-valve.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail.
With reference to the accompanying drawings 1~4, a kind of dual column system gas chromatograph of the present invention, it is first quantitative that its first transfer valve 1 is provided withPipe 6 and the second quantity tube 7; The second transfer valve 2 is provided with the first chromatographic column 11 and the second chromatographic column 12; The 3rd transfer valve 3 is provided withThe first needle-valve 13, the second needle-valve 14 and PDD helium ionization detector 10. 8. number connecing of the first carrier gas 4 gas circuits and the first transfer valve 1Mouth connects, the second carrier gas 5 gas circuits are connected with the 4. number interface of the first transfer valve 1; Sample inlet 8 and the first transfer valve 1 2. numberInterface connects, sample export 9 is connected with the 1. number interface of the first transfer valve 1; First quantity tube 6 one end and the first transfer valve 110. number interface connection, the other end are connected with the 7. number interface of the first transfer valve 1; Second quantity tube 7 one end and the first transfer valve 13. number interface connection, the other end are connected with the 6. number interface of the first transfer valve 1; 5. number interface and second of the first transfer valve 1 is cutChange the connection of 6. number interface pipeline, the 9. number interface of the first transfer valve 1 and the 2. pipe for number interface of the second transfer valve (2) of valve 2Road connects. 1. number interface of the second transfer valve 2 is connected with first chromatographic column 11 one end, the 4. number interface of the second transfer valve 2 andOne chromatographic column 11 other ends connect; 5. number interface of the second transfer valve 2 is connected with second chromatographic column 12 one end, the 3rd transfer valve 36. number interface be connected with second chromatographic column 12 other ends; 3. 2. number connecing of number interface of the second transfer valve 2 and the 3rd transfer valve 3Mouth connects with pipeline. 3. number interface of the 3rd transfer valve 3 is connected with the first needle-valve 13, the 5. number interface of the 3rd transfer valve 3 andTwo needle-valves 14 connect; 1. number interface of the 3rd transfer valve 3 is connected with PDD helium ionization detector 10. The first transfer valve 1 is ten logicalPurge pneumatic transfer valve, the second transfer valve 2 and the 3rd transfer valve 3 are the pneumatic transfer valve of six logical purgings.
Embodiment:
The first chromatographic column adopting PorapakQ chromatographic column in the present invention, the second chromatographic column adopting 5A molecular sieve chromatography post,The pure helium standard sample of one bottle height is analyzed, and impurity is H2、O2、N2、CH4, CO, impurity concentration is at 5ppm.
Concrete sample introduction and the course of work are as follows:
A: as shown in Figure 1, sample inlet 8 accesses standard sample, the first transfer valve 1 starts sample introduction. Switch second simultaneouslyTransfer valve 2, as shown in Figure 3, the second carrier gas 5 enters 5A molecular sieve chromatography post with the sample of the second quantity tube 7, then entersPDD helium ionization detector, realizes the analysis for the second chromatographic column.
B: as shown in Figure 1, sample inlet 8 accesses standard sample, the first transfer valve 1 starts sample introduction. As shown in Figure 2,The second carrier gas 5 is introduced into PorapakQ chromatographic column with the sample of the second quantity tube 7, then enters 5A molecular sieve chromatography post, lastEnter PDD helium ionization detector, realize for the first chromatographic column and the common analysis of the second chromatographic column.
C: as shown in Figure 1, sample inlet 8 accesses standard sample, the first transfer valve 1 starts sample introduction. As shown in Figure 4,The first carrier gas 4 enters PorapakQ chromatographic column with the sample of the first quantity tube 6, then enters PDD helium ionization detector, realNow for the analysis of the first chromatographic column.
The above is simple embodiment of the present invention, and protection of the present invention is as the criterion with described in the claims in the present invention, allThe equivalent variations of doing according to the present invention and replacement, all should belong to the protection domain of patent of the present invention.

Claims (3)

1. a dual column system gas chromatograph, is characterized in that: first transfer valve (1) of described gas chromatograph is provided withCertain buret (6) and the second quantity tube (7); The second transfer valve (2) is provided with the first chromatographic column (11) and the second chromatographic column (12);The 3rd transfer valve (3) is provided with the first needle-valve (13), the second needle-valve (14) and PDD helium ionization detector (10); The first carrier gas (4)Gas circuit is connected with the 8. number interface of the first transfer valve (1), the 4. number interface of the second carrier gas (5) gas circuit and the first transfer valve (1) connectsConnect; Sample inlet (8) is connected with the 2. number interface of the first transfer valve (1), sample export (9) and the first transfer valve (1) 1. numberInterface connects; The first quantity tube (6) one end is connected with the 10. number interface of the first transfer valve (1), the other end and the first transfer valve (1)7. number interface connect; The second quantity tube (7) one end is connected with the 3. number interface of the first transfer valve (1), the other end and first is cutThe 6. number interface that changes valve (1) connects; 6. number interface pipeline of the 5. number interface of the first transfer valve (1) and the second transfer valve (2)Connection, the 9. number interface of the first transfer valve (1) and the 2. number interface of the second transfer valve (2) are connected with pipeline; Described second cutsThe 1. number interface that changes valve (2) is connected with the first chromatographic column (11) one end, 4. number interface and first chromatographic column of the second transfer valve (2)(11) other end connects; 5. number interface of the second transfer valve (2) is connected with the second chromatographic column (12) one end, the 3rd transfer valve (3)6. number interface be connected with the second chromatographic column (12) other end; 3. number interface of the second transfer valve (2) and the 3rd transfer valve (3)2. number interface connects with pipeline.
2. dual column system gas chromatograph according to claim 1, is characterized in that: the 3rd described transfer valve (3)3. number interface be connected with the first needle-valve (13), the 5. number interface of the 3rd transfer valve (3) is connected with the second needle-valve (14); The 3rd cutsThe 1. number interface that changes valve (3) is connected with PDD helium ionization detector (10).
3. dual column system gas chromatograph according to claim 1, is characterized in that: described the first transfer valve (1)Be the pneumatic transfer valve of ten logical purgings, described the second transfer valve (2) and the 3rd transfer valve (3) are the pneumatic transfer valve of six logical purgings.
CN201510019909.6A 2015-01-15 2015-01-15 Dual column system gas chromatograph Active CN104597156B (en)

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CN105572281B (en) * 2015-12-15 2017-07-07 武汉钢铁(集团)公司 The gas chromatographic analysis device and its analysis method of a kind of high purity oxygen gas
CN106771305A (en) * 2017-01-20 2017-05-31 浙江赛鹭鑫仪器有限公司 A kind of gas automatic sampling device

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CN103913519A (en) * 2013-01-05 2014-07-09 中国地质科学院矿产资源研究所 Natural gas hydrate gas chromatography system and method for detecting components of natural gas hydrate
CN103645253A (en) * 2013-11-19 2014-03-19 苏州丹百利电子材料有限公司 Ultrapure phosphine analysis method and apparatus thereof
CN103675140A (en) * 2013-12-13 2014-03-26 上海华爱色谱分析技术有限公司 Helium ionized gas chromatographic analyzer for analyzing trace impurities in high-purity germane gas
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