CN2354137Y - High-pressure quick-acting gas-phase chromatograph instrument - Google Patents
High-pressure quick-acting gas-phase chromatograph instrument Download PDFInfo
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- CN2354137Y CN2354137Y CN 98249058 CN98249058U CN2354137Y CN 2354137 Y CN2354137 Y CN 2354137Y CN 98249058 CN98249058 CN 98249058 CN 98249058 U CN98249058 U CN 98249058U CN 2354137 Y CN2354137 Y CN 2354137Y
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Abstract
The utility model discloses a chromatograph instrument, comprising a gas path system whose pressure is 0.4-3.0MPa, a split sample feeder whose proportion is 300-1000: 1, a chromatographic column and a detector. The chromatographic column is a super-resolution chromatographic column whose resolving ability is 5-11 times of the general chromatographic column, and the chromatographic column can be a super-resolution capillary column and can also be a super-resolution thin packed column. The chromatograph instrument is mainly used for the separation analysis of volatile organic compounds whose boiling points are less than 700DEG. C and the analysis of the mixture of inorganic and organic gas, the analysing speed of the chromatograph instrument is raised by 5-11 times, and the resolution of the chromatograph instrument is raised by 5-7 times.
Description
The utility model relates to a kind of analytical instrument, relates in particular to a kind of gas chromatograph.
Gas chromatograph is a kind of instrument in the analytical instrument, and it is mainly used in compartment analysis and inorganic and analysis organic gas potpourri of boiling point at the volatility organic mixture below 700 ℃.Therefore this instrument can be widely used in every field such as oil, petrochemical industry, environmental protection, medicine, legal medical expert, chemical industry and agricultural, has now become the medium analysis instrument that a kind of consumption is big, use is wide.
At present, the general gas chromatograph of manufacturer production all is that pressure is the low-voltage instrument of 0.001-0.40MPA both at home and abroad, and its main deficiency is that analysis time is long, and resolution is low.
The purpose of this utility model be to overcome above-mentioned deficiency and provide a kind of analysis speed fast, differentiate the high quick gas chromatograph of high pressure.
Mainly by adopting high-pressure gas circuit system and the such technological means of high pressure super-resolution chromatographic column to reach, concrete technical scheme is as follows for the purpose of this utility model.
The quick gas chromatograph of high pressure of the present utility model, it comprises air-channel system, injector, chromatographic column and detecting device, described air-channel system is that pressure is 0.4-3.0MPA high-pressure gas circuit system; Described injector is that pressure is that 0.4-3.0MPA, ratio are 300-1000: 1 high pressure vast scale split stream injector; Described chromatographic column is that resolution characteristic is a general chromatographic column 4-10 super-resolution chromatographic column doubly; Described high-pressure gas circuit system is made up of gas cylinder, reduction valve, high-voltage switch gear valve, tensimeter, high voltage stabilizing valve, high pressure flow stabilizing valve and electronic flow-meter, and high-purity pressure gas H wherein is housed in the gas cylinder
2Or He, and being connected with reduction valve, reduction valve divides two-way be linked in sequence high-voltage switch gear valve, tensimeter, high voltage stabilizing valve, high pressure flow stabilizing valve and electronic flow-meter, makes high-purity pressure gas H
2Or He enters described high pressure vast scale split stream injector, through them; Described injector comprises main body, respectively with main body on, upper cap nut that the lower end connects and following nut, place the last rubber dottle pin that disposes in turn from its upper end in the main body downwards, central authorities have the dottle pin supporter of through hole, the graphite pressure ring, the graphite pressure ring of internal lining pipe and lower end and the quartz column conduit that places the internal lining pipe lower central, one carrier gas inlet that is connected with the electronic flow-meter outlet of described high-pressure gas circuit system and the diverting valve that links to each other and communicate with its inside with the main body outer wall are arranged on the top wall of main body, there is an infundibulate sample inlet in central authorities at upper cap nut, there is a through hole in central authorities at the graphite pressure ring, in the central authorities that descend nut one cylindrical hole are arranged; Described chromatographic column is passed described cylindrical hole and is connected with following nut, and inserts the quartz column conduit; Described detecting device is high pressure or micro-detector.
The quick gas chromatograph of high pressure of the present utility model, the pressure of wherein said air-channel system are 0.8MPA; Described injector pressure is 0.8MPA, and ratio is 600: 1; The resolution characteristic of described chromatographic column is 5 times of general chromatographic column.
The quick gas chromatograph of high pressure of the present utility model, wherein the super-resolution chromatographic column is that internal diameter is 0.05-0.10mm, length is the super-resolution capillary column of the quartz capillary of 1-20m, its inwall has the coating of SE-54 or OV-1 stationary phase commonly used, and coating thickness is 0.1-1.0 μ m, and the post of generation is imitated and is 10000-50000 theoretical tray/m.
The quick gas chromatograph of high pressure of the present utility model, described internal diameter are 0.07mm, and length is 10m, and coating thickness is 0.2 μ m, and it is 15000 theoretical trays/m that the post of generation is imitated.
The quick gas chromatograph of high pressure of the present utility model, wherein the super-resolution chromatographic column is that internal diameter is 0.1-0.5mm, length is the quartz ampoule of 0.5-10m or the thin packed column of super-resolution of stainless-steel tube, is filled with granularity in its pipe and is less than or equal to the stationary phase chromosorb that 200 purposes scribble high temperature-resistant polymer organism or silicone.
The quick gas chromatograph of high pressure of the present utility model, described internal diameter are 0.3mm, and length is 2m, and granularity is 200 orders.
The quick gas chromatograph of high pressure of the present utility model, described macromolecule organic are OV-1 or OV-17; Described silicone is polymethyl siloxane or phenyl silicone.
The quick gas chromatograph of high pressure of the present utility model also is provided with miniature six-way valve on upper cap nut, and communicates with funnel-shaped hole on the upper cap nut.
The advantage of the quick gas chromatograph of high pressure of the present utility model is:
1. owing to adopted high-pressure gas circuit system and diameter than the thin 4-5 of existing chromatographic column high pressure super-resolution chromatographic column doubly, make analysis speed improve 4-10 doubly, resolution has improved 4-6 doubly, thereby has saved analysis time widely and improved resolution characteristic widely.
2. owing to improved work efficiency greatly, the quick gas chromatograph of available high pressure of the present utility model substitutes a large amount of gas chromatographs that use now, can obtain favorable economic benefit, thereby can become the main product in analytical instrument market, and then obtain the good social benefit.
Below in conjunction with drawings and embodiments the quick gas chromatograph of high pressure of the present utility model is further described.
Fig. 1 is the process flow diagram of the quick gas chromatograph of high pressure of the present utility model.
Fig. 2 is the high-pressure gas circuit system schematic of the quick gas chromatograph of high pressure of the present utility model.
Fig. 3 is the cross-sectional schematic of the high pressure vast scale split stream injector, in the quick gas chromatograph of high pressure of the present utility model.
As depicted in figs. 1 and 2, the quick gas chromatograph of high pressure of the present utility model is equipped with gas H in the high-pressure cylinder that its pressure outside Instrument shell is 0.8MPA
2(also available gas He).When with positive structure carbon dodecane when the blend sample of carbon tetracontane is carried out compartment analysis, open the reduction valve 2 that is connected with steel cylinder 1 in the high-pressure gas circuit system, gas H2 in the steel cylinder 1 divides the two-way sequential flow through high-voltage switch gear valve 3 through decompression, tensimeter 4, high voltage stabilizing valve 5, behind high pressure flow stabilizing valve 6 and the electronic flow-meter 7, from pressure shown in Figure 3 is 0.8MPA, ratio is that the carrier gas inlet 16 of 600: 1 high pressure vast scale split stream injector, enters this injector, enter the super-resolution chromatographic column by split ratio then, separate, detect with high pressure or micro-detector again, carry out data processing at last.
Referring to Fig. 3, described high pressure vast scale split stream injector, comprises main body 8, respectively with main body 8 on, upper cap nut 9 and following nut 10 that the lower end connects, place the last rubber dottle pin 11 that disposes in turn from its upper end in the main body 8 downwards, central authorities have the dottle pin supporter 12 of through hole, graphite pressure ring 13, the graphite pressure ring 13 of internal lining pipe 14 and lower end and the quartz column conduit 15 that places internal lining pipe 14 lower central, one carrier gas inlet 16 that is connected with electronic flow-meter 7 outlets of described high-pressure gas circuit system and the diverting valve 17 that links to each other and communicate with its inside with main body 8 outer walls are arranged on the top wall of main body 8, there is an infundibulate sample inlet in central authorities at upper cap nut 9, there is a through hole in central authorities at graphite pressure ring 13, in the central authorities that descend nut 10 one cylindrical hole are arranged; Described chromatographic column 18 is passed described cylindrical hole and is connected with following nut 10, and inserts quartz column conduit 15; Described detecting device is high pressure or micro-detector.
When carrying out compartment analysis with the quick gas chromatograph of high pressure of the present utility model, at first the said mixture sample is sucked micro syringe, then this syringe is inserted through infundibulate sample inlet, pass rubber dottle pin 11 and central authorities and have the middle part of the dottle pin supporter 12 of through hole to the quartz lining pipe 14 of band silica wool filler, inject the 0.02-0.10 microlitre, select the described blend sample of 0.4 microlitre for use.This sample is evaporation in being heated to 350 ℃ described internal lining pipe 14, enters super-resolution capillary chromatograph 18 by 600: 1 split ratios, separates, and detects with high pressure or micro-detector then, and remainder is through diverting valve 17 discharges.Handle with data input electronics amplification and data processor that detecting device detects.
Claims (10)
1, the quick gas chromatograph of a kind of high pressure, it comprises air-channel system, injector, chromatographic column and detecting device, it is characterized in that: described air-channel system is that pressure is 0.4-3.0MPA high-pressure gas circuit system; Described injector is that pressure is that 0.4-3.0MPA, ratio are 300-1000: 1 high pressure vast scale split stream injector; Described chromatographic column is that resolution characteristic is a general chromatographic column 4-10 super-resolution chromatographic column doubly; Described high-pressure gas circuit system is made up of gas cylinder (1), reduction valve (2), high-voltage switch gear valve (3), tensimeter (4), high voltage stabilizing valve (5), high pressure flow stabilizing valve (6) and electronic flow-meter (7), wherein in the gas cylinder (1) high-purity pressure gas H is housed
2Or He, and being connected with reduction valve (2), reduction valve (2) divides two-way be linked in sequence high-voltage switch gear valve (3), tensimeter (4), high voltage stabilizing valve (5), high pressure flow stabilizing valve (6) and electronic flow-meter (7), makes high-purity pressure gas H
2Or He enters described high pressure vast scale split stream injector, through them; Described injector comprises main body (8), respectively with main body (8) on, upper cap nut (9) and following nut (10) that the lower end connects, place the last rubber dottle pin (11) that disposes in turn from its upper end in the main body (8) downwards, central authorities have the dottle pin supporter (12) of through hole, graphite pressure ring (13), the graphite pressure ring (13) of internal lining pipe (14) and lower end and the quartz column conduit (15) that places internal lining pipe (14) lower central, one carrier gas inlet (16) that is connected with electronic flow-meter (7) outlet of described high-pressure gas circuit system and the diverting valve (17) that links to each other and communicate with its inside with main body (8) outer wall are arranged on the top wall of main body (8), there is an infundibulate sample inlet in central authorities at upper cap nut (9), there is a through hole in central authorities at graphite pressure ring (13), in the central authorities that descend nut (10) one cylindrical hole are arranged; Described chromatographic column (18) is passed described cylindrical hole and is connected with following nut (10), and inserts quartz column conduit (15); Described detecting device is high pressure or micro-detector.
2, according to the quick gas chromatograph of the high pressure of claim 1, it is characterized in that: the pressure of described air-channel system is 0.8MPA; Described injector pressure is 0.8MPA, and vast scale is 600: 1; The resolution characteristic of described chromatographic column is 5 times of general chromatographic column.
3, according to the quick gas chromatograph of the high pressure of claim 1 or 2, it is characterized in that: wherein super-resolution chromatographic column (14) is that internal diameter is 0.05-0.10mm, length is the super-resolution capillary column of the quartz capillary of 1-20m, its inwall has the coating of SE-54 or OV-1 stationary phase commonly used, and coating thickness is 0.1-1.0 μ m, and the post of generation is imitated and is 10000-50000 theoretical tray/m.
4, according to the quick gas chromatograph of the high pressure of claim 3, it is characterized in that: described internal diameter is 0.07mm, and length is 10m, and coating thickness is 0.2 μ m, and it is 15000 theoretical trays/m that the post of generation is imitated.
5, according to the quick gas chromatograph of the high pressure of claim 1 or 2, it is characterized in that: wherein super-resolution chromatographic column (14) is that internal diameter is 0.1-0.5mm, length is the quartz ampoule of 0.5-10m or the thin packed column of super-resolution of stainless-steel tube, is filled with granularity in its pipe and is less than or equal to the stationary phase chromosorb that 200 purposes scribble high temperature-resistant polymer organism or silicone.
6, according to the quick gas chromatograph of the high pressure of claim 5, it is characterized in that: described internal diameter is 0.3mm, and length is 2m, and granularity is 200 orders.
7, according to the quick gas chromatograph of the high pressure of claim 5, it is characterized in that: described macromolecule organic is OV-1 or OV-17; Described silicone is polymethyl siloxane or phenyl silicone.
8, according to the quick gas chromatograph of the high pressure of claim 6, it is characterized in that: described macromolecule organic is OV-1 or OV-17; Described silicone is polymethyl siloxane or phenyl silicone.
9, according to the quick gas chromatograph of the high pressure of claim 5, it is characterized in that: on upper cap nut (9), also be provided with miniature six-way valve, and communicate with funnel-shaped hole on the upper cap nut (9).
10, according to claim 6, the quick gas chromatograph of 7 or 8 described high pressure, it is characterized in that: on upper cap nut (9), also be provided with miniature six-way valve, and communicate with funnel-shaped hole on the upper cap nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249058 CN2354137Y (en) | 1998-11-25 | 1998-11-25 | High-pressure quick-acting gas-phase chromatograph instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98249058 CN2354137Y (en) | 1998-11-25 | 1998-11-25 | High-pressure quick-acting gas-phase chromatograph instrument |
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| Publication Number | Publication Date |
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| CN2354137Y true CN2354137Y (en) | 1999-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98249058 Expired - Fee Related CN2354137Y (en) | 1998-11-25 | 1998-11-25 | High-pressure quick-acting gas-phase chromatograph instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7257987B2 (en) | 2000-01-25 | 2007-08-21 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University | Method and apparatus for sample analysis |
| CN102103125A (en) * | 2010-11-23 | 2011-06-22 | 北京汇丰隆经济技术开发有限公司 | Biological aerosol mass spectrum high-temperature pyrolysis system |
| CN106066370A (en) * | 2016-06-20 | 2016-11-02 | 中国科学院兰州化学物理研究所 | Gas chromatogram bushing pipe |
| CN112834633A (en) * | 2020-12-28 | 2021-05-25 | 北京杰宇广谱科技有限公司 | Fast hydrocarbon composition analyzer |
-
1998
- 1998-11-25 CN CN 98249058 patent/CN2354137Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7257987B2 (en) | 2000-01-25 | 2007-08-21 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University | Method and apparatus for sample analysis |
| US7621171B2 (en) | 2000-01-25 | 2009-11-24 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University | Method and apparatus for sample analysis |
| US8347688B2 (en) | 2000-01-25 | 2013-01-08 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University | Method and apparatus for sample analysis |
| CN102103125A (en) * | 2010-11-23 | 2011-06-22 | 北京汇丰隆经济技术开发有限公司 | Biological aerosol mass spectrum high-temperature pyrolysis system |
| CN106066370A (en) * | 2016-06-20 | 2016-11-02 | 中国科学院兰州化学物理研究所 | Gas chromatogram bushing pipe |
| CN112834633A (en) * | 2020-12-28 | 2021-05-25 | 北京杰宇广谱科技有限公司 | Fast hydrocarbon composition analyzer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |