CN201689079U - Gas chromatography analysis device of natural gas compositions - Google Patents
Gas chromatography analysis device of natural gas compositions Download PDFInfo
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- CN201689079U CN201689079U CN201020140016XU CN201020140016U CN201689079U CN 201689079 U CN201689079 U CN 201689079U CN 201020140016X U CN201020140016X U CN 201020140016XU CN 201020140016 U CN201020140016 U CN 201020140016U CN 201689079 U CN201689079 U CN 201689079U
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- analysis device
- way valve
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Abstract
The utility model relates to a gas analysis device, in particular to a natural gas composition analysis device. A gas chromatography analysis device of natural gas compositions comprises a first unit which comprises a carrier gas control system, an auxiliary gas control system, a ten-way valve and a first six-way valve control system, a quantitative pipe, a sample inlet, a 5A chromatographic column, a Porapak-Q chromatographic column, a thermal conductivity cell detector TCD, a signal amplifier and a data processing system thereof. The gas chromatography analysis device further comprises a second unit which comprises the carrier gas control system, the signal amplifier and the data processing system thereof shared with the first unit, a second six-way valve control system, a quantitative pipe, a sample inlet, a AL2O3 chromatographic column and a flame ionization detector FID, wherein the quantitative pipe of the second unit is connected with the quantitative pipe of the first unit in series. The gas chromatography analysis device can rapidly and accurately analyze the compositions of natural gas.
Description
Technical field
The utility model relates to a kind of gas analyzing apparatus, relates in particular to a kind of gas component analytical equipment.
Background technology
Rock gas is one of important energy source in the iron and steel enterprise, and it can mix use with the gas of other recovery, for each production line provides the energy, and the smooth and cutting as Wide and Thick Slab, cold-reduced sheet annealing, oven dry, coating, silicon steel continuous annealing line, the gas turbine of power plant etc.Its component is the important foundation that fuel gases calorific value calculates in energy sector.Therefore the component and the thermal value measurement of rock gas and air mixture are to satisfy the requirement of iron and steel enterprise to energy utilization.
Gas component is mainly with methane (CH
4) be main, also contain H
2, O
2, N
2, CO
2, C
2H
6, C
3H
8, and a spot of C
2H
4, CO, i-C
4H
10, n-C
4H
10With micro-C
5Hydrocarbon.Because different on gas source and the purposes, the content difference is big between the each component, and nature difference is little between some component.The high score that utilizes vapor-phase chromatography separates and the component tested in the rock gas is the method for relatively making earnest efforts in recent years from characteristic (wide bore capillary column).
Vapor-phase chromatography is a kind of technology of discrete testing efficiently, its principle is, utilizing different material to have different partition factor (or solubleness) at a certain temperature in different two-phase (stationary phase and moving phase) separates, when moving phase during by stationary phase two-phase do relative motion, mixed gas repeatedly distributes (absorption and desorption, dissolving and volatilization) repeatedly in two-phase, even those partition factors have only the component of fine difference like this, also can produce very big separating effect, thereby it is different components are separated fully, and quantitative in addition.Therefore reasonably designing gas chromatographic valve road flow process and switching point is key point accurate, that effectively test mixed gass such as rock gas fast.
At present, the gc analysis rock gas is generally taked programmed temperature method, carries out separation determination with four valves, five posts (chromatography column) dual-detector (2 thermal conductivity detector (TCD)s).These methods have tangible weak point.
The weak point that programmed temperature method is analyzed rock gas is:
(1) unstability of base line is fixed, has drift, disturbs normally to go out the peak, and influence is unfavorable for the integration of chromatographic peak to the judgement of chromatogram peak base.
(2) when analyze to finish the back by high-temperature reply to initial analysis temperature (general gas analysis, column temperature is about 50 ℃), need the wait long period, after baseline stability, carry out next sample analysis again, see Table 1.
Table 1 finishing temperature be returned to initial temperature must stabilization time (min)
(3) when initial temperature rises to 100 ℃ or 180 ℃, on the P-Q chromatographic column, have a very big water peak and flow out, perhaps strengthen baseline wander, especially there is bigger baseline wander in interference analysis on the signal of TCD detecting device;
(4) programmed temperature method rises to high temperature by low temperature, can produce nameless peak in this process, be referred to as ghost peak, this is because have the part high boiling substance to adsorb or to be dissolved in the chromatographic column behind the sample analysis at ordinary times, and these high boiling substances can discharge in high temperature, the interference colour analysis of spectrum.
The weak point that adopts four valves, five posts (chromatography column) dual-detector (2 thermal conductivity detector (TCD) TCD) to carry out the separation determination rock gas is:
(1) post of packed column effect is low, and complex component is difficult to separate;
(2) packed column is also undesirable to the separation of low content or microcomponent;
(3) used TCD detecting device is more much lower than the sensitivity with fid detector among the present invention in the method;
(4) the TCD detecting device is totally unfavorable to the analysis of microcomponent;
(5) analysis process is loaded down with trivial details, and valve switches frequent, and test can increase with valve, and chromatographic column increases and difficulty is increasing, causes valve to switch to be difficult to correct assurance in time, can't separation component be cut with holding water; Its switching flow sees Table 2;
(6) analytical cycle is long, reaches 50 minutes, does not satisfy the monitoring of energy sector and the application requirements of technology.
Table 2 switching flow
Summary of the invention
The utility model is intended to address the above problem, and a kind of gas chromatographic analysis device of natural gas composition is provided.The utility model can analyze gas component rapidly and accurately.
The utility model is achieved in that a kind of gas chromatographic analysis device of natural gas composition, it comprises the first module that is made of carrier gas control system, auxiliary gas control system system, ten-way valve and the first six-way valve control system, quantity tube, injection port, 5A chromatographic column, Porapak-Q chromatographic column, thermal conductivity cell detector TCD, signal amplifier and data handling system thereof, it also comprises by carrier gas control system, signal amplifier and the data handling system thereof shared with first module, and the second six-way valve control system, quantity tube, injection port, AL
2O
3Unit second that chromatographic column and flame ionization ditector FID constitute, the quantity tube of described Unit second and the series connection of the quantity tube of first module.
The utility model the utility model vapor-phase chromatography valve road switching flow makes it compared with prior art owing to adopted above technical scheme, has the following advantages and characteristics:
Rock gas foreshortened to 20 minutes by 50 minutes analysis time.
The reliability of rock gas analysis obviously improves, and the relative standard deviation of methane component is lower than 0.2% of bibliographical information less than 0.1%, can be to be deployed into energy mix in proportion the authentic data basis is provided.
Owing to improved reliability and the analysis speed of analyzing data, help the energy accurately to allocate, energy savings satisfies the demand of smelter lean production.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is the utility model synoptic diagram;
Embodiment
As shown in Figure 1: designed single injected sampling, used three root chromatogram columns, three transfer valves switch with precise time point, the analysis process of dual-detector (thermal conductivity detector (TCD) TCD and flame ionization ditector FID) test.The analysis process figure of rock gas as shown in Figure 1, concrete summary of the invention is as follows:
This flow process is made up of two unit: first module has carrier gas control system 1, auxiliary gas control system system 2, ten-way valve 3 and six-way valve 41, quantity tube 51, injection port 61, two root chromatogram columns (5A, Porapak-Q chromatographic column) 7,8, thermal conductivity cell detector (TCD) 9, signal amplifier 101 and data handling system 11 thereof.There are carrier gas control system 1, six-way valve 42, quantity tube 52, injection port 62, a root chromatogram column (AL in Unit second
2O
3Chromatographic column) 12, flame ionization ditector (FID) 13, signal amplifier 102 and data handling system 11 thereof.
For single injected sampling is finished analysis task, two quantity tubes 51,52 in two unit are together in series, then at a certain temperature sample behind quantity tube, drive sample by carrier gas and enter the first module analytic system, by the switching time that ten-way valve 3 and six-way valve 42 come operation valve, 5A molecular sieve chromatography post is isolated H earlier like this
2, O
2, N
2, CH
4, CO.
Ten-way valve 3, six-way valve 41 and six-way valve control system 42 are defined as the 1#2#3# valve.
2. Porapak-Q chromatogram 8 posts are isolated CO
2, C
2H
4, C
2H
6, obtain component content through TCD detecting device 9 and signal amplifier and 101 its data handling systems 11.
3. sample enters the second element analysis system, and by the switching time that six-way valve system 42 comes operation valve, sample is through AL
2O
3 Chromatographic column 12 separation of C H
4, C
2H
6, C
2H
4, C
3H
8, i-C
4H
10, n-C
4H
10With micro-C5 hydrocarbon, obtain component content through fid detector 13 and signal amplifier 102 and data handling system 11 thereof.
4. the component of last rock gas is H
2, O
2, N
2, CH
4, CO, CO
2, C
2H
4, C
2H
6, C
3H
8, i-C
4H
10, n-C
4H
10With micro-C5 hydrocarbon.
This programme has designed accurate switching time of the point of three valves.See Table 3
Illustrate:
1) valve control system was set in the time of 0.01 minute, and six-way valve is opened, AL
2O
3The aluminium oxide chromatographic column is carried out CH
4, C
2H
6, C
2H
4, C
3H
8, n-C
4H
10, i-C
4H
10Separate with micro-C5 hydrocarbon etc.
2) in the time of 0.01 minute, the 2# ten-way valve is opened, run to 3.50 fens kinds after the 2# valve close, this moment, the 5A molecular sieve column carried out H
2, O
2, N
2, CH
4, CO separates, when these peaks separate finish after, be 12.00 minutes this moment, 2# valve and 3# valve are opened simultaneously so, the outflow and separating in the Porapak-Q chromatographic column again of remaining sample, these components are CO
2, C
2H
4, C
2H
6
3) after running to 20.00 minutes, close No. 1 valve, No. 2 valves, No. 3 valves, analyze and finish.
Table 3: three valve point switching time designs
Claims (1)
1. the gas chromatographic analysis device of a natural gas composition, it comprises the first module that is made of carrier gas control system, auxiliary gas control system system, ten-way valve and the first six-way valve control system, quantity tube, injection port, 5A chromatographic column, Porapak-Q chromatographic column, thermal conductivity cell detector TCD, signal amplifier and data handling system thereof, it is characterized in that: it also comprises by carrier gas control system, signal amplifier and the data handling system thereof shared with first module, and the second six-way valve control system, quantity tube, injection port, AL
2O
3Unit second that chromatographic column and flame ionization ditector FID constitute, the quantity tube of described Unit second and the series connection of the quantity tube of first module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020140016XU CN201689079U (en) | 2010-03-24 | 2010-03-24 | Gas chromatography analysis device of natural gas compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020140016XU CN201689079U (en) | 2010-03-24 | 2010-03-24 | Gas chromatography analysis device of natural gas compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201689079U true CN201689079U (en) | 2010-12-29 |
Family
ID=43377359
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|---|---|---|---|
| CN201020140016XU Expired - Fee Related CN201689079U (en) | 2010-03-24 | 2010-03-24 | Gas chromatography analysis device of natural gas compositions |
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|---|---|
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Cited By (12)
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| CN102636598A (en) * | 2012-04-10 | 2012-08-15 | 黎明化工研究院 | Gas chromatography valve path system for analyzing multiple high-purity fluorine-containing electronic gases and using method of system |
| CN102928401A (en) * | 2012-10-16 | 2013-02-13 | 中昊光明化工研究设计院有限公司 | Device and method for detecting total sulfur/sulfur dioxide in carbon dioxide for food |
| CN102937627A (en) * | 2012-10-19 | 2013-02-20 | 苏州金宏气体股份有限公司 | Online analysis method for gas components in natural gas hydrogen production process |
| CN102980949A (en) * | 2012-11-01 | 2013-03-20 | 苏州金宏气体股份有限公司 | Detection method for content of total butylene hydrocarbons in natural gas |
| US8531422B2 (en) | 2011-09-12 | 2013-09-10 | Siemens Aktiengesellschaft | Intrinsically safe touch screen for process equipment |
| CN103472179A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | System for sampling and component analysis of truck loaded finished liquefied natural gas |
| CN103472180A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | Sampling and component-analyzing system of natural gas dewatered by molecular sieve |
| CN103604897A (en) * | 2013-10-31 | 2014-02-26 | 陕西延长石油(集团)有限责任公司研究院 | On-line multidimensional gas chromatographic analysis device universal for low carbon catalytic conversion reaction |
| 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 |
| CN107271597A (en) * | 2017-08-09 | 2017-10-20 | 西南化工研究设计院有限公司 | A kind of Gas Components rapid analysis method and its chromatographic analysis systems |
| CN111948327A (en) * | 2019-05-15 | 2020-11-17 | 新疆新业能源化工有限责任公司 | Analysis method for trace oxygen, argon, nitrogen, carbon monoxide, methane and carbon dioxide in industrial hydrogen |
| CN115326967A (en) * | 2022-08-16 | 2022-11-11 | 成都蓝湖科技有限公司 | Sample pretreatment system for on-line chromatographic analyzer for measuring natural gas components |
-
2010
- 2010-03-24 CN CN201020140016XU patent/CN201689079U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8531422B2 (en) | 2011-09-12 | 2013-09-10 | Siemens Aktiengesellschaft | Intrinsically safe touch screen for process equipment |
| CN102636598A (en) * | 2012-04-10 | 2012-08-15 | 黎明化工研究院 | Gas chromatography valve path system for analyzing multiple high-purity fluorine-containing electronic gases and using method of system |
| CN102928401A (en) * | 2012-10-16 | 2013-02-13 | 中昊光明化工研究设计院有限公司 | Device and method for detecting total sulfur/sulfur dioxide in carbon dioxide for food |
| CN102937627A (en) * | 2012-10-19 | 2013-02-20 | 苏州金宏气体股份有限公司 | Online analysis method for gas components in natural gas hydrogen production process |
| CN102980949B (en) * | 2012-11-01 | 2015-06-10 | 苏州金宏气体股份有限公司 | Detection method for content of total butylene hydrocarbons in natural gas |
| CN102980949A (en) * | 2012-11-01 | 2013-03-20 | 苏州金宏气体股份有限公司 | Detection method for content of total butylene hydrocarbons in natural 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 |
| 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 |
| CN103472179A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | System for sampling and component analysis of truck loaded finished liquefied natural gas |
| CN103472180A (en) * | 2013-09-29 | 2013-12-25 | 中国寰球工程公司 | Sampling and component-analyzing system of natural gas dewatered by molecular sieve |
| CN103604897A (en) * | 2013-10-31 | 2014-02-26 | 陕西延长石油(集团)有限责任公司研究院 | On-line multidimensional gas chromatographic analysis device universal for low carbon catalytic conversion reaction |
| CN107271597A (en) * | 2017-08-09 | 2017-10-20 | 西南化工研究设计院有限公司 | A kind of Gas Components rapid analysis method and its chromatographic analysis systems |
| CN107271597B (en) * | 2017-08-09 | 2018-12-25 | 西南化工研究设计院有限公司 | A kind of Gas Components rapid analysis method and its chromatographic analysis systems |
| CN111948327A (en) * | 2019-05-15 | 2020-11-17 | 新疆新业能源化工有限责任公司 | Analysis method for trace oxygen, argon, nitrogen, carbon monoxide, methane and carbon dioxide in industrial hydrogen |
| CN115326967A (en) * | 2022-08-16 | 2022-11-11 | 成都蓝湖科技有限公司 | Sample pretreatment system for on-line chromatographic analyzer for measuring natural gas components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20160324 |