CN1924573A - Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series - Google Patents
Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series Download PDFInfo
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- CN1924573A CN1924573A CN 200510097952 CN200510097952A CN1924573A CN 1924573 A CN1924573 A CN 1924573A CN 200510097952 CN200510097952 CN 200510097952 CN 200510097952 A CN200510097952 A CN 200510097952A CN 1924573 A CN1924573 A CN 1924573A
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- molecular sieve
- tcd
- thermal conductivity
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Abstract
This invention relates to single and double serial switch gas group phase chromatograph, which solves all component peak and totally separating of H2,O2, N2,CH4,CO,CO2 within once sampling through single and double column serial switching to realize one time measurement. The invention can use correction regression method to eliminate column temperature, pressure, speed and sampling volume.
Description
Technical field
The present invention relates to a kind of gas-detecting device, is a kind ofly to adopt single double column serial switching mode to measure the gas chromatograph of gas composition specifically.
Technical background
In synthetic ammonia, Coal Chemical Industry, petroleum chemical industry, the mensuration of gas composition is all very important to producing with safety at present.Owing to contain H in the conventional gas
2, O
2, N
2, CH
4, CO, CO
2Etc. gas componant, in the prior art, the mensuration of conventional gas gas composition is to adopt vapor-phase chromatography mostly, by 5A molecular sieve column and silicagel column (TDX-01 type) respectively sample introduction obtain all gases result, sample enters the 5A molecular sieve column and obtains H
2, O
2, N
2, CH
4, the CO peak because the molecular sieve column CO absorption
2, thereby can not get CO
2The peak, CO
2The peak is by obtaining at the silica gel column sample injection again, because use external standard method, factors such as column temperature, post pressure, column flow rate cause error bigger to analysis result, and by twice sample introduction analysis, cause the sample introduction analytical error twice, make errors of analytical results further increase.
Summary of the invention
The object of the present invention is to provide a kind of gas chromatograph of detecting gas component with single and double columns switch mode in series, can simply accurately measure and contain H in the conventional gas
2, O
2, N
2, CH
4, CO, CO
2Etc. gas componant.
The object of the present invention is achieved like this:
Single double column serial switching formula gas composition analyzer, comprise thermal conductivity detector (TCD) 1, TDX-01 post 2 and the 5A molecular sieve column 3 of being with thermal conductivity detector (TCD), wherein, with TDX-01 post the preceding and after the outlet 5 of 5A molecular sieve column by transfer valve 4 be connected in series, the other end of described 5A molecular sieve column with transport to chromatographic pipeline and be connected, another outlet 6 of described transfer valve 4 with transport to chromatographic pipeline and be connected.
The present invention can also be able to further realization by following prioritization scheme:
Single double column serial switching gas composition gas chromatograph, comprise thermal conductivity detector (TCD) 1, TDX-01 post 2 and 5A molecular sieve column 3, wherein, with TDX-01 post the preceding and after the outlet 5 of 5A molecular sieve column by transfer valve 4 be connected in series, the other end of described 5A molecular sieve column is connected with the pipeline of transporting to thermal conductivity detector (TCD), another outlet 6 of described transfer valve 4 is connected with the pipeline of transporting to thermal conductivity detector (TCD), and transfer valve 4 wherein is six direction changeover valves.
The present invention can also be able to further realization by following prioritization scheme:
Single double column serial switching gas composition gas chromatograph, comprise thermal conductivity detector (TCD) 1, silicagel column post 2 and molecular sieve column 3, wherein, with silicagel column the preceding and after the outlet 5 of molecular sieve column by transfer valve 4 be connected in series, the other end of described molecular sieve column is connected with the pipeline of transporting to thermal conductivity detector (TCD), another outlet 6 of described transfer valve 4 is connected with the pipeline of transporting to thermal conductivity detector (TCD) 1, export 6 with pipeline that thermal conductivity detector (TCD) is connected on a needle valve 7 is set.
Behind single-column, add a needle valve,, play the resistance identical with molecular sieve column by regulating needle valve, make switch before and after flow rate of carrier gas change little, thereby fluctuation is little before switching the back baseline and switching.
The advantage of the gas chromatograph of detecting gas component with single and double columns switch mode in series is:
(1) H in the mixed component of gas
2, O
2, N
2, CH
4, CO, CO
2Go out peak and separation fully by the single injected sampling all components, realize that the measurement of all components is once finished;
(2) can use the correction normalization method to calculate, the result is influenced not quite by column temperature, post pressure, column flow rate, sample size, and error is less;
(3) assembling is simple, easy to operate.
Description of drawings
Gas circuit repacking synoptic diagram when Fig. 1 flows through twin columns for the chromatographic column carrier gas.
Gas circuit repacking synoptic diagram when Fig. 2 flows through single-column for the chromatographic column carrier gas.
Fig. 3 analyzes the spectrogram example of synthetic ammonia gas for the present technique single injected sampling.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention and principle of work are elaborated.
Single double column serial switching gas composition gas chromatograph, comprise thermal conductivity detector (TCD) 1, silicagel column (TDX-01 type) 2 and 5A molecular sieve column 3, wherein, with silicagel column the preceding and after the outlet 5 of 5A molecular sieve column by transfer valve 4 be connected in series, the other end of described 5A molecular sieve column is connected with the pipeline of transporting to detecting device, another outlet 6 of described transfer valve 4 is connected with the pipeline of transporting to detecting device, on outlet 6 and pipeline that detecting device is connected a needle valve 7 is set, wherein said transfer valve is six direction changeover valves.
When transfer valve during at Fig. 1 state, carrier gas flow through successively silicagel column 2, the outlet 5 of six direction changeover valves and 5A molecular sieve column 3 enter thermal conductivity detector (TCD) 1, H
2, O
2, N
2, CO, CH
4Component successively goes out the peak, draws measurement result, and because of CO
2Be attracted to 5A molecular sieve column 3, can't be determined; When transfer valve switched to Fig. 2 state, carrier gas flow through successively outlet 6 of single-column TDX-01 post, transfer valve and needle valve entered thermal conductivity detector (TCD), measure CO
2Content.
Measurement result to a gas sample is as follows:
| The peak preface | The component name | Retention time [min] | Peak height [uV] | Peak area [uV*s] | Peak area % | Content [%] | The |
| 1 2 3 4 5 6 --- | H2 O2 N2 CO CH4 CO2 amounts to | 0.684 1.562 1.972 3.801 5.217 7.007 ------- | 1500 508 12689 3859 269 8897 27722 | 11115 4670 156369 97508 7697 126702 404062 | 2.75091 1.15587 38.69921 24.132 1.90499 31.35701 100 | 53.5271 0.39824 14.68516 9.44119 0.84766 21.10065 100 | BB BV VB BV VB BB --- |
Fig. 3 is for using the collection of illustrative plates of the measured knot of the single double column serial switching gas composition gas chromatograph of the present invention.
Embodiment
Single double column serial switching gas composition gas chromatograph, comprise thermal conductivity detector (TCD) 1, silicagel column 2 and 5A molecular sieve column 3, wherein, with silicagel column the preceding and after the outlet 5 of 5A molecular sieve column by transfer valve 4 be connected in series, the other end of described 5A molecular sieve column is connected with the pipeline of transporting to detecting device, another outlet 6 of described transfer valve 4 is connected with the pipeline of transporting to detecting device, on outlet 6 and pipeline that detecting device is connected a needle valve is set, wherein said transfer valve is six direction changeover valves.
Claims (3)
1, single double column serial switching gas composition gas chromatograph, comprise thermal conductivity detector (TCD) (1), silicagel column (2) and molecular sieve column (3), it is characterized in that, with silicagel column the preceding and after the outlet (5) of molecular sieve column by transfer valve (4) be connected in series, the other end of described molecular sieve column is connected with the pipeline of transporting to thermal conductivity detector (TCD), and the outlet (6) of described transfer valve (4) is connected with the pipeline of transporting to thermal conductivity detector (TCD).
2, single double column serial switching gas composition gas chromatograph as claimed in claim 1 is characterized in that described transfer valve (4) is six direction changeover valves.
3, single double column serial switching gas composition gas chromatograph as claimed in claim 1 or 2 is characterized in that, on the outlet (6) of transfer valve (4) and pipeline that thermal conductivity detector (TCD) is connected a needle valve (7) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510097952 CN1924573A (en) | 2005-09-02 | 2005-09-02 | Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510097952 CN1924573A (en) | 2005-09-02 | 2005-09-02 | Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924573A true CN1924573A (en) | 2007-03-07 |
Family
ID=37817300
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|---|---|---|---|
| CN 200510097952 Pending CN1924573A (en) | 2005-09-02 | 2005-09-02 | Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792299A (en) * | 2013-06-05 | 2014-05-14 | 中国石油天然气股份有限公司 | Method and device for analyzing components of gas produced in oilfield by flooding fire through gas chromatography |
| CN106124663A (en) * | 2016-07-29 | 2016-11-16 | 黑龙江省劳动安全科学技术研究中心 | A kind of detection method of Carbon Dioxide in Air content |
| CN106769355A (en) * | 2016-11-24 | 2017-05-31 | 山东省计量科学研究院 | A kind of multicomponent flue gas analyzer interference blanking unit and method |
| CN107515258A (en) * | 2017-07-19 | 2017-12-26 | 山西晋城无烟煤矿业集团有限责任公司 | It is a kind of to determine H in fermentation gas simultaneously2、CH4、CO2The method of concentration |
| CN109613160A (en) * | 2018-12-26 | 2019-04-12 | 同济大学 | It is a kind of to analyze solubilised state gas H in seawater simultaneously2/O2/N2/CH4Headspace gas chromatography system and method |
| CN112595791A (en) * | 2020-12-24 | 2021-04-02 | 中国科学院上海微系统与信息技术研究所 | Gas chromatography device based on automatic sample introduction of electromagnetic valve and detection method |
| CN113203769A (en) * | 2021-04-15 | 2021-08-03 | 电子科技大学 | High-air-tightness micro thermal conductivity detector and manufacturing method thereof |
-
2005
- 2005-09-02 CN CN 200510097952 patent/CN1924573A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792299A (en) * | 2013-06-05 | 2014-05-14 | 中国石油天然气股份有限公司 | Method and device for analyzing components of gas produced in oilfield by flooding fire through gas chromatography |
| CN103792299B (en) * | 2013-06-05 | 2016-08-10 | 中国石油天然气股份有限公司 | A kind of oilfield fireflood produces gas chromatography analysis method and the device of constituents |
| CN106124663A (en) * | 2016-07-29 | 2016-11-16 | 黑龙江省劳动安全科学技术研究中心 | A kind of detection method of Carbon Dioxide in Air content |
| CN106124663B (en) * | 2016-07-29 | 2019-04-02 | 黑龙江省劳动安全科学技术研究中心 | A kind of detection method of Carbon Dioxide in Air content |
| CN106769355A (en) * | 2016-11-24 | 2017-05-31 | 山东省计量科学研究院 | A kind of multicomponent flue gas analyzer interference blanking unit and method |
| CN107515258A (en) * | 2017-07-19 | 2017-12-26 | 山西晋城无烟煤矿业集团有限责任公司 | It is a kind of to determine H in fermentation gas simultaneously2、CH4、CO2The method of concentration |
| CN109613160A (en) * | 2018-12-26 | 2019-04-12 | 同济大学 | It is a kind of to analyze solubilised state gas H in seawater simultaneously2/O2/N2/CH4Headspace gas chromatography system and method |
| CN112595791A (en) * | 2020-12-24 | 2021-04-02 | 中国科学院上海微系统与信息技术研究所 | Gas chromatography device based on automatic sample introduction of electromagnetic valve and detection method |
| CN113203769A (en) * | 2021-04-15 | 2021-08-03 | 电子科技大学 | High-air-tightness micro thermal conductivity detector and manufacturing method thereof |
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