CN202383115U - Multifunctional gas chromatography detection system for gas analysis - Google Patents
Multifunctional gas chromatography detection system for gas analysis Download PDFInfo
- Publication number
- CN202383115U CN202383115U CN2011204268533U CN201120426853U CN202383115U CN 202383115 U CN202383115 U CN 202383115U CN 2011204268533 U CN2011204268533 U CN 2011204268533U CN 201120426853 U CN201120426853 U CN 201120426853U CN 202383115 U CN202383115 U CN 202383115U
- Authority
- CN
- China
- Prior art keywords
- interface
- way valve
- chromatographic column
- gas
- detection system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model discloses a multifunctional gas chromatography detection system for gas analysis, which comprises a first ten-way valve, a second ten-way valve, a first chromatographic column, a second chromatographic column, a third chromatographic column, a fourth chromatographic column, a first gas quantitative tube, a second gas quantitative tube, a nickel reformer, a first hydrogen flame ionization detector, a second hydrogen flame ionization detector and a thermal conductivity cell detector. The multifunctional gas chromatography detection system for gas analysis is capable of detecting all of O2, N2, CH4, total hydrocarbons with at least two carbon atoms (C2+), major or trace CO and CO2 in a gas sample, therefore, three gases in a device for hydrogen production by pressure swing adsorption can be analyzed by a same apparatus, and component contents of all impurities in each sample can be quickly measured through only one sample injection.
Description
Technical field
The utility model relates to a kind of multifunctional gas-chromatograph detection system that is used for gas analysis.
Background technology
Thermal conductivity cell detector (TCD) and flame ionization ditector (FID) are two kinds of topmost chromatographic detectors.TCD has the advantage that various materials is all had response, but sensitivity is not high, is fit to macro-analysis; FID have good stability, response rapidly, to advantages such as organic sensitivity height, but it does not respond dead matter.Trace C0 and CO
2On TCD, can't detect, can in the nickel reburner, be converted into methane, on highly sensitive FID, detect with hydrogen reaction.
Gas (hereinafter to be referred as PSA gas) in the transformation absorption device for producing hydrogen comprises unstripped gas, separates gassing and product gas (high-purity H
2) three kinds, the impurity composition that unstripped gas is conciliate gassing comprises O2, N
2, CH
4, C
2+, constant CO and CO
2, the impurity composition of product gas comprises O
2, N
2, CH
4, trace amounts of CO and CO
2The composition of PSA gas is the significant data that instructs technological operation, especially CO and the CO in the product gas
2Content must strictly be controlled less than 20ppm, otherwise will cause the activity of hydrocatalyst loss.
A lot of with gas like the PSA gas in the industry, like refinery gas, rock gas and flue gas, relevant chromatogram analysis method has multiple, but does not have a kind of method can on a chromatograph, accomplish the analysis of PSA gas.Rock gas analytical approach ASTM D1945 and refinery gas analytical approach UOP 539 adopt five valves/seven posts/2-TCD/FID detecting device, can analyze the O in the PSA gas
2, N
2, CH
4, C
2+, constant CO and CO
2, but owing to do not dispose the nickel reburner, thereby can not detect trace amounts of CO and CO
2(＜50ppm).The Analysis of Gases of High Purity appearance 7890-0304 of U.S. Agilent company adopts single valve/2-analytical column/nickel reburner/FID, can analyze the CH in the PSA gas
4, trace amounts of CO and CO
2, but owing to adopt single channel, do not dispose molecular sieve column and TCD detecting device, thereby can not analyze O
2And N
2Current for the analysis of PSA gas is to adopt two chromatographs, can cause so not only that cost increases, operation is loaded down with trivial details, and because the gaseous tension in the quantity tube during two chromatograph sample introductions is not quite identical, causes error to increase.
The utility model content
The technical matters to be solved of the utility model provides a kind of multifunctional gas-chromatograph detection system that is used for gas analysis; This multifunctional gas-chromatograph detection system that is used for gas analysis all can detect the above total hydrocarbon of O2, N2, CH4, C2 (C2+), constant or trace amounts of CO and the CO2 of gaseous sample; Three kinds of gases in the transformation absorption device for producing hydrogen can be analyzed on same instrument, and each sample only need single injected sampling just can measure all dirt component content fast.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of multifunctional gas-chromatograph detection system that is used for gas analysis comprises first ten-way valve, second ten-way valve, first chromatographic column, second chromatographic column, the 3rd chromatographic column, the 4th chromatographic column, the 5th chromatographic column, the first gasometry pipe, the second gasometry pipe, nickel reburner, first flame ionization ditector, second flame ionization ditector and thermal conductivity cell detector;
The two ends of the first gasometry pipe connect the 1st interface and the 8th interface of first ten-way valve respectively;
The two ends of first chromatographic column connect the 2nd interface and the 5th interface of first ten-way valve respectively;
Nitrogen connects the 4th interface and the 7th interface of first ten-way valve;
The 6th interface of one termination, first ten-way valve of second chromatographic column, the other end joins through the nickel reburner and first flame ionization ditector;
The 9th interface of first ten-way valve and the 10th interface of second ten-way valve join;
The 10th interface of first ten-way valve is an appearance gas inlet;
The two ends of the second gasometry pipe connect the 1st interface and the 8th interface of second ten-way valve respectively;
The two ends of the 3rd chromatographic column connect the 2nd interface and the 5th interface of second ten-way valve respectively;
The 3rd interface of second ten-way valve connects second flame ionization ditector;
Hydrogen connects the 4th interface and the 7th interface of second ten-way valve;
The 6th interface of second ten-way valve connects the 5th interface of six-way valve through the 4th chromatographic column;
The 9th interface of second ten-way valve is the outlet of appearance gas;
[damping provides the resistance close with the 5th chromatographic column, and gas flow is stable when switching with the assurance six-way valve to be connected to damping between the 1st interface of six-way valve and the 6th interface.】
The 2nd interface of six-way valve connects thermal conductivity cell detector;
The two ends of the 5th chromatographic column connect the 3rd interface and the 4th interface of six-way valve respectively.
The nickel reburner also has a hydrogen input end.
First chromatographic column and the 3rd chromatographic column all adopt the Porapak Q of 1m* φ 3mm, and (styrene and divinylbenzene copolymerization obtain porous polymer beads, are called Porapak abroad, the domestic GDX that is called.Change polymerization technique, can change its polarity and aperture, make the porous polymer beads of various performances, Porapak Q wherein is the very good gas-solid chromatography (GSC) stationary phase of a kind of chromatographic separation performance.) packed column; Second chromatographic column and the 4th chromatographic column all adopt the Porapak Q packed column of 2m* φ 3mm; The 13X molecular sieve packed column of the 5th chromatographic column adopting 3m* φ 3mm.
The beneficial effect of the utility model:
The multifunctional gas-chromatograph detection system that is used for gas analysis of the utility model; From forming by three streams in logic; Wherein stream 1 comprises successively first chromatographic column, first ten-way valve, second chromatographic column, nickel reburner and first flame ionization ditector (FID1) that links to each other, with nitrogen as carrier gas.Stream 2 comprises successively the 3rd chromatographic column, second ten-way valve, the 4th chromatographic column, six-way valve, the 5th chromatographic column and the thermal conductivity cell detector (TCD) that links to each other, with hydrogen as carrier gas.Stream 3 comprises that the interface of second ten-way valve is to second flame ionization ditector (FID2).On two interfaces of first ten-way valve, connect two-way nitrogen, connect two-way hydrogen on two interfaces of second ten-way valve, respectively as carrier gas or blowback air.Ten-way valve on stream 1 and the stream 2 respectively carries a gasometry pipe, links to each other through ten-way valve, under programmed control, realizes sample introduction simultaneously, analyzes simultaneously.Said constant CO of the utility model and CO
2Be meant greater than 50ppm a trace amounts of CO and a mouthful CO
2Be meant less than 50ppm.
Owing to adopted above design, compared with prior art, the utility model is easy and simple to handle, saves the hardware investment cost, has improved analysis speed and analytical accuracy.
Description of drawings
Fig. 1 is a quantity tube sampling flowsheet synoptic diagram
Fig. 2 is ten-way valve sample introduction and the positive wind drift journey of six-way valve synoptic diagram
Fig. 3 is ten-way valve blowback and six-way valve blowback schematic flow sheet.
Label declaration: 1-first ten-way valve, 2-second ten-way valve, 3-second chromatographic column, 4-first chromatographic column; The 5-drain, the 6-first gasometry pipe, the 7-second gasometry pipe, 9-the 4th chromatographic column; 10-the 3rd chromatographic column, 11-the 5th chromatographic column, 12-six-way valve; The 14-damping, FID1 representes that first flame ionization ditector, TCD represent thermal conductivity cell detector, FID2 representes second flame ionization ditector.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Embodiment 1:
Shown in Fig. 1-3, embodiment 1: the analysis of unstripped gas
Contain 60% the hydrogen of having an appointment in the unstripped gas, impurity mainly is O
2, N
2, micro-C
2+ and the CH of constant
4, CO and CO
2, its analysis process is following:
(1), the analysis process of stream 1: the first ten-way valve sample introduction, sample gets into first chromatographic column, CO, CH
4, CO
2Get into second chromatographic column successively through initial gross separation, work as CO
2After getting into second chromatographic column, first ten-way valve switches, and compares CO
2Heavy component is by blowback emptying, CO, CH
4, CO
2In second chromatographic column, continue to separate, after nickel reburner entering FID1 is to be detected.
(2), the analysis process of stream 2 and stream 3: the second ten-way valve sample introduction, sample gets into the 3rd chromatographic column, nitrogen oxygen, CO, CH
4, CO
2Successively flow out the 3rd chromatographic column and get into the 4th chromatographic column, work as CO
2After getting into the 4th chromatographic column, second ten-way valve switches, and compares CO
2Heavy C
2+ gone out the 3rd chromatographic column by blowback, get into FID2 through second ten-way valve, it is to be detected to close the peak as one.Nitrogen oxygen, CO, CH
4After flowing into the 5th chromatographic column from the 4th chromatographic column, six-way valve switches, and their are caught on the 5th chromatographic column, lets CO simultaneously
2Walk around the 5th chromatographic column and get into TCD.Work as CO
2After the outflow, six-way valve switches back original passage again, lets O
2, N
2, CO, CH4 flow out from the 5th chromatographic column, it is to be detected to get into TCD.
With external standard method the each component in 3 streams is carried out quantitative Analysis, 100 deduct each component percentage composition be the percentage composition of hydrogen.
The 3rd interface of first ten-way valve among Fig. 1 is a drain.
Embodiment 2: the analysis of product gas
Contain 99% above hydrogen in the product gas, impurity mainly is O
2, N
2, and the trace CH
4, CO and CO
2, do not contain C
2+, its analysis process and instance 1 are basic identical, and stream 1 can detect the CH of trace
4, CO and CO
2, stream 2 can detect O
2And N
2, difference only is: because the CH in the product gas
4, CO, CO
2And C
2+ content is too low, and these materials can not detect on stream 2 and stream 3.
Embodiment 3: the analysis of separating gassing
Separate and contain 35% the hydrogen of having an appointment in the gassing, impurity mainly is O
2, N
2, micro-C
2+ and the CH of constant
4, CO and CO
2, the content of each impurity composition all a bit than unstripped gas height, its analysis process and unstripped gas (embodiment 1) are identical.
CO in sample, CH
4Or CO
2Content is during greater than 50ppm, and these several kinds of materials can both detect on stream 1 and stream 2, and the analysis result on two streams can be verified mutually, improves the reliability of analysis result.All greater than the sample (for example separating gassing) of 50ppm, ten-way valve that also can stream 1 is set to not sample introduction, makes CO, CH for these three kinds of content of material
4, CO
2Only on stream 2, detect.
Claims (3)
1. multifunctional gas-chromatograph detection system that is used for gas analysis; It is characterized in that, comprise first ten-way valve, second ten-way valve, first chromatographic column, second chromatographic column, the 3rd chromatographic column, the 4th chromatographic column, the 5th chromatographic column, the first gasometry pipe, the second gasometry pipe, nickel reburner, first flame ionization ditector, second flame ionization ditector and thermal conductivity cell detector;
The two ends of the first gasometry pipe connect the 1st interface and the 8th interface of first ten-way valve respectively;
The two ends of first chromatographic column connect the 2nd interface and the 5th interface of first ten-way valve respectively;
Nitrogen connects the 4th interface and the 7th interface of first ten-way valve;
The 6th interface of one termination, first ten-way valve of second chromatographic column, the other end joins through the nickel reburner and first flame ionization ditector;
The 9th interface of first ten-way valve and the 10th interface of second ten-way valve join;
The 10th interface of first ten-way valve is an appearance gas inlet;
The two ends of the second gasometry pipe connect the 1st interface and the 8th interface of second ten-way valve respectively;
The two ends of the 3rd chromatographic column connect the 2nd interface and the 5th interface of second ten-way valve respectively;
The 3rd interface of second ten-way valve connects second flame ionization ditector;
Hydrogen connects the 4th interface and the 7th interface of second ten-way valve;
The 6th interface of second ten-way valve connects the 5th interface of six-way valve through the 4th chromatographic column;
The 9th interface of second ten-way valve is the outlet of appearance gas;
Be connected to damping between the 1st interface of six-way valve and the 6th interface;
The 2nd interface of six-way valve connects thermal conductivity cell detector;
The two ends of the 5th chromatographic column connect the 3rd interface and the 4th interface of six-way valve respectively.
2. the multifunctional gas-chromatograph detection system that is used for gas analysis according to claim 1 is characterized in that the nickel reburner also has a hydrogen input end.
3. the multifunctional gas-chromatograph detection system that is used for gas analysis according to claim 1 and 2 is characterized in that, first chromatographic column and the 3rd chromatographic column all adopt the Porapak Q packed column of 1m* φ 3mm; Second chromatographic column and the 4th chromatographic column all adopt the Porapak Q packed column of 2m* φ 3mm; The 13X molecular sieve packed column of the 5th chromatographic column adopting 3m* φ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204268533U CN202383115U (en) | 2011-11-01 | 2011-11-01 | Multifunctional gas chromatography detection system for gas analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204268533U CN202383115U (en) | 2011-11-01 | 2011-11-01 | Multifunctional gas chromatography detection system for gas analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383115U true CN202383115U (en) | 2012-08-15 |
Family
ID=46631609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204268533U Expired - Lifetime CN202383115U (en) | 2011-11-01 | 2011-11-01 | Multifunctional gas chromatography detection system for gas analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383115U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879490A (en) * | 2012-09-21 | 2013-01-16 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | One-time sample introduction analytic method for Ar+O2, N2, CH4, CO2 and N2O through gas chromatographic method |
| CN103792299A (en) * | 2013-06-05 | 2014-05-14 | 中国石油天然气股份有限公司 | Gas chromatography analysis method and device for components of oilfield fireflood produced gas |
| CN103837629A (en) * | 2013-12-06 | 2014-06-04 | 重庆川仪分析仪器有限公司 | Device and detection method for chromatography of CO, CH4 and CO2 ingredients in gas |
| CN103913519A (en) * | 2013-01-05 | 2014-07-09 | 中国地质科学院矿产资源研究所 | Gas chromatography system for natural gas hydrate and detection method for components of natural gas hydrate |
| CN104678034A (en) * | 2013-11-27 | 2015-06-03 | 上海宝钢工业技术服务有限公司 | Analysis system for determining impurity components in highly pure gases, and determination method thereof |
| CN105510492A (en) * | 2015-12-31 | 2016-04-20 | 上海正帆科技股份有限公司 | Analysis device and method of electronic-grade hydrogen chloride |
| CN105510503A (en) * | 2015-12-31 | 2016-04-20 | 上海正帆科技股份有限公司 | Analysis device and method of electronic-grade chlorine gas |
| CN107436322A (en) * | 2016-05-17 | 2017-12-05 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN107884494A (en) * | 2017-11-13 | 2018-04-06 | 阳泉煤业（集团）有限责任公司 | Methanol ammonoxidation product gas phase on-line chromatographic analysis method |
| CN110146609A (en) * | 2019-05-06 | 2019-08-20 | 北京水木滨华科技有限公司 | A kind of the qualitative and quantitative analysis analytical equipment and method of gas component |
| CN111220742A (en) * | 2020-03-23 | 2020-06-02 | 中国工程物理研究院材料研究所 | Micro sample gas automatic sampling system for gas chromatography |
| CN111380988A (en) * | 2020-03-17 | 2020-07-07 | 中国测试技术研究院化学研究所 | Gas chromatograph for measuring content of impurities in hydrogen and detection method |
| CN112378954A (en) * | 2020-12-10 | 2021-02-19 | 江阴金属材料创新研究院有限公司 | Online circulating hydrogen analysis detector |
| CN114428121A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Containing high concentration H2Quantitative detection device and method for all components of natural gas of S |
| CN114813978A (en) * | 2021-01-19 | 2022-07-29 | 中国石油化工股份有限公司 | Gas chromatographic analysis equipment and gas chromatographic analysis method for mixed butene hydroformylation reaction product |
| CN114965828A (en) * | 2022-06-13 | 2022-08-30 | 北京高麦克仪器科技有限公司 | Electronic grade hydrogen chloride analysis method |
| CN115774068A (en) * | 2022-11-27 | 2023-03-10 | 易安蓝焰煤与煤层气共采技术有限责任公司 | Device and method for accurately detecting trace carbon monoxide, ethylene and acetylene gas components in coal mine gas sample in laboratory |
-
2011
- 2011-11-01 CN CN2011204268533U patent/CN202383115U/en not_active Expired - Lifetime
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879490A (en) * | 2012-09-21 | 2013-01-16 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | One-time sample introduction analytic method for Ar+O2, N2, CH4, CO2 and N2O through gas chromatographic method |
| CN103913519A (en) * | 2013-01-05 | 2014-07-09 | 中国地质科学院矿产资源研究所 | Gas chromatography system for natural gas hydrate and detection method for components of natural gas hydrate |
| CN103913519B (en) * | 2013-01-05 | 2015-09-09 | 中国地质科学院矿产资源研究所 | Gas chromatography system for natural gas hydrate and detection method for components of natural gas hydrate |
| CN103792299A (en) * | 2013-06-05 | 2014-05-14 | 中国石油天然气股份有限公司 | Gas chromatography analysis method and device for components of oilfield fireflood produced gas |
| CN103792299B (en) * | 2013-06-05 | 2016-08-10 | 中国石油天然气股份有限公司 | Gas chromatography analysis method and device for components of oilfield fireflood produced gas |
| CN104678034A (en) * | 2013-11-27 | 2015-06-03 | 上海宝钢工业技术服务有限公司 | Analysis system for determining impurity components in highly pure gases, and determination method thereof |
| CN103837629A (en) * | 2013-12-06 | 2014-06-04 | 重庆川仪分析仪器有限公司 | Device and detection method for chromatography of CO, CH4 and CO2 ingredients in gas |
| CN103837629B (en) * | 2013-12-06 | 2016-01-20 | 重庆川仪分析仪器有限公司 | For CO, CH in gas 4and CO 2the device of component color analysis of spectrum and detection method thereof |
| CN105510492A (en) * | 2015-12-31 | 2016-04-20 | 上海正帆科技股份有限公司 | Analysis device and method of electronic-grade hydrogen chloride |
| CN105510503A (en) * | 2015-12-31 | 2016-04-20 | 上海正帆科技股份有限公司 | Analysis device and method of electronic-grade chlorine gas |
| CN107436322A (en) * | 2016-05-17 | 2017-12-05 | 株式会社堀场制作所 | Gas analyzing apparatus |
| CN107884494A (en) * | 2017-11-13 | 2018-04-06 | 阳泉煤业（集团）有限责任公司 | Methanol ammonoxidation product gas phase on-line chromatographic analysis method |
| CN110146609A (en) * | 2019-05-06 | 2019-08-20 | 北京水木滨华科技有限公司 | A kind of the qualitative and quantitative analysis analytical equipment and method of gas component |
| CN111380988A (en) * | 2020-03-17 | 2020-07-07 | 中国测试技术研究院化学研究所 | Gas chromatograph for measuring content of impurities in hydrogen and detection method |
| CN111380988B (en) * | 2020-03-17 | 2023-06-06 | 中国测试技术研究院化学研究所 | Gas chromatograph for measuring impurity content in hydrogen and detection method |
| CN111220742A (en) * | 2020-03-23 | 2020-06-02 | 中国工程物理研究院材料研究所 | Micro sample gas automatic sampling system for gas chromatography |
| CN114428121A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Containing high concentration H2Quantitative detection device and method for all components of natural gas of S |
| CN114428121B (en) * | 2020-09-09 | 2024-04-09 | 中国石油化工股份有限公司 | High-concentration H 2 S-type natural gas full-component quantitative detection device and method |
| CN112378954A (en) * | 2020-12-10 | 2021-02-19 | 江阴金属材料创新研究院有限公司 | Online circulating hydrogen analysis detector |
| CN114813978A (en) * | 2021-01-19 | 2022-07-29 | 中国石油化工股份有限公司 | Gas chromatographic analysis equipment and gas chromatographic analysis method for mixed butene hydroformylation reaction product |
| CN114965828A (en) * | 2022-06-13 | 2022-08-30 | 北京高麦克仪器科技有限公司 | Electronic grade hydrogen chloride analysis method |
| CN114965828B (en) * | 2022-06-13 | 2023-09-05 | 北京高麦克仪器科技有限公司 | Electronic grade hydrogen chloride analysis method |
| CN115774068A (en) * | 2022-11-27 | 2023-03-10 | 易安蓝焰煤与煤层气共采技术有限责任公司 | Device and method for accurately detecting trace carbon monoxide, ethylene and acetylene gas components in coal mine gas sample in laboratory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202383115U (en) | Multifunctional gas chromatography detection system for gas analysis | |
| CN2886567Y (en) | Gas chromatograph for complete gas analysis | |
| CN111380988B (en) | Gas chromatograph for measuring impurity content in hydrogen and detection method | |
| CN101923098B (en) | Continuous on-line analysis device of benzene, total hydrocarbons, methane and CO in carbon dioxide | |
| CN204359757U (en) | A kind of New type coal methanol project special-purpose gas chromatograph | |
| CN201440135U (en) | Multifunctional gas chromatograph gas path flow | |
| CN103604897B (en) | On-line multidimensional gas chromatographic analysis device universal for low carbon catalytic conversion reaction | |
| CN101887051B (en) | Online chromatographic analysis method | |
| CN201803991U (en) | Gas channel switching system for natural gas component analysis | |
| CN1924573A (en) | Gas chromatograph apparatus for detecting gas component with single and double columns switch mode in series | |
| CN101887052B (en) | Online chromatographic analysis device | |
| CN2443375Y (en) | Refinery gas analyzer | |
| CN201945580U (en) | Online analysis chromatograph for gas in insulating oil | |
| CN201765237U (en) | Continuous online analysis device for analyzing benzene, total hydrocarbons, methane and carbon monoxide in carbon dioxide | |
| CN202305489U (en) | Chromatographic instrument for detecting failure of SF6 electric equipment | |
| CN203745437U (en) | Separation and analysis device for light components in coal-bed methane | |
| CN205861632U (en) | A kind of gas chromatogram carrier gas system | |
| CN201311413Y (en) | Gas phase chromatographic system of oil for single-way analysis transformer | |
| CN203422358U (en) | Analysis device for gases in 5N high-purity carbon dioxide | |
| CN201083726Y (en) | Underground fluid various gas separation module | |
| CN116068107A (en) | Device and method for separating components of dissolved gas in high-precision transformer oil | |
| CN102788851B (en) | Gas in Oil of Transformer single-column one pin sample introduction chromatogram analysis method | |
| CN204188578U (en) | For single injection port gas chromatograph that insulating oil is analyzed | |
| CN1172187C (en) | Gas chromatographic analysis process of micro and trace CO and CO2 | |
| CN104458936B (en) | For single injection port gas chromatograph that insulating oil is analyzed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |