CN201637728U - Device for rapidly detecting constituents of hydrogen - Google Patents

Device for rapidly detecting constituents of hydrogen Download PDF

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Publication number
CN201637728U
CN201637728U CN2010201192754U CN201020119275U CN201637728U CN 201637728 U CN201637728 U CN 201637728U CN 2010201192754 U CN2010201192754 U CN 2010201192754U CN 201020119275 U CN201020119275 U CN 201020119275U CN 201637728 U CN201637728 U CN 201637728U
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CN
China
Prior art keywords
valve
chromatographic column
pipeline
oxygen adsorber
gas
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Expired - Fee Related
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CN2010201192754U
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Chinese (zh)
Inventor
陈代勇
刘雪峰
曹灼
辛佳鹏
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SHENYANG HONGSHENG GAS CO Ltd
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SHENYANG HONGSHENG GAS CO Ltd
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Priority to CN2010201192754U priority Critical patent/CN201637728U/en
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Abstract

The utility model provides a device for rapidly detecting constituents of hydrogen, which comprises a carrier gas bottle, a pressure reducer, a depth purifier, a sample feeding six-way valve, an oxygen adsorber, a chromatographic column, a helium ionization detector, a sample gas standard gas steel bottle and pipelines for joining the devices; the carrier gas bottle is connected with the pressure reducer, the pressure reducer is connected with the depth purifier, the depth purifier and the sample gas standard gas steel bottle are connected with the oxygen adsorber through the sample feeding six-way valve, the oxygen adsorber is connected with the chromatographic column, the chromatographic column is connected with the helium ionization detector, and the pipeline in front of the oxygen adsorber is provided with a four-way switching valve; by switching the four-way switching valve, the carrier gas with the sample gas,enters the chromatographic column or enters the chromatographic column after passing through the oxygen adsorber; the pipeline behind the chromatographic column is provided with a pre-cutting valve, so by switching the pre-cutting valve, the regular effluent constituent is cut so as to prevent the unwanted constituents from entering the helium ionization detector.

Description

A kind of device of quick detection hydrogen component
Technical field: present technique relates to the gas analysis field, relates in particular at the high-purity hydrogen analysis.
Background technology: at present, hydrogen fully shows self many-sided advantage at energy field.Electronics, organic synthesis, quartzy processing and other fields also propose higher requirement to hydrogen purity, are used to prepare the raw material such as the table 1 of hydrogen at present.
Table 1
Hydrogen feedstock Number percent %
Rock gas 48
Oil 30
Coal 18
Electrolysis 4
Mainly there is the impurity as table 2 in hydrogen product in above production technology after purifying.
GB/T7445-1995
Table 2
In to the impurity analysis process, the especially analysis of the above purity level of High Purity Hydrogen is had higher requirement to the detectability of instrument.The gas analysis mode that present industry generally adopts is:
The principle of oxygen (argon) and nitrogen analysis is to adopt alternating temperature absorption concentration technique, detects with thermal conductivity detector (TCD).At first make in the sample gas the quantitatively absorption on the evaporating column under the liquid nitrogen temperature of tested component, desorption by heating then, thereby it is dense that tested component is carried in advance, separates the back through chromatographic column again and detect.Tested component is introduced into conductance cell and causes that the variation of bridge flow resistance value and its content are proportional, can determine oxygen (argon) and nitrogen content thus.
Carbon monoxide, carbon dioxide, methane content measuring principle are to adopt alternating temperature to concentrate transformation technology, measure with hydrogen flame detector.At first carry tested component dense through evaporating column, separate through chromatographic column then, again with wherein carbon monoxide, carbon dioxide are converted into methane through catalytic hydrogenation, enter chamber successively, in flame, generate ion, because number of ions and tested component concentration are in direct ratio, thereby can measure carbon monoxide, carbon dioxide and methane content.
Above detection technique exists not enough: 1, this detection method need be applied to two instruments or two kinds of detecting devices, should use inconvenience, and cost of investment is also higher.2, all need alternating temperature to concentrate in the test process, concentration process can bring a lot of troubles as: device structure complexity, need liquid nitrogen as low-temperature receiver bring economic expenditure and unsafe factor (frostbite), need sample gas, standard is large-minded, analysis operation process time long (needing 60-120 minute to providing data from sample introduction), test result can be introduced than mistake etc. because of the personnel operation factor.
How can in analytic process, avoid above problem, and can provide in time continuous production, the data of safety, science, become problem demanding prompt solution.
Summary of the invention:
Goal of the invention: the utility model provides a kind of device of quick detection hydrogen component, its objective is the following problem that solution was installed in the past: 1, use inconvenience, cost of investment height; 2, the analysis operation process time is long, and test result can be introduced than mistake because of the personnel operation factor.
Technical scheme: the utility model is achieved through the following technical solutions:
A kind of device of quick detection hydrogen component comprises carrier gas bottle, decompressor, deep purifying device, sample introduction six-way valve, oxygen adsorber, chromatographic column, helium ionization detector, sample gas gas steel cylinder and connects their pipeline; Carrier gas bottle is connected to decompressor, decompressor is connected to the deep purifying device, deep purifying device and sample gas gas steel cylinder are connected to the oxygen adsorber by the sample introduction six-way valve, the oxygen adsorber is connected to chromatographic column, chromatographic column is connected to helium ionization detector, it is characterized in that: the pipeline before the described oxygen adsorber is provided with selection and carries the four-way switching valve whether carrier gas of sample gas passes through the oxygen adsorber, and four-way switching valve also is connected to chromatographic column by pipeline; Also be provided with precut valve on the pipeline between described chromatographic column and the helium ionization detector, the deep purifying device is connected to precut valve by pipeline.
The internal diameter of described four-way switching valve is 2mm, institute's connecting line internal diameter is 2mm, pipeline between oxygen adsorber and the chromatographic column is provided with first solenoid valve, and the pipeline between four-way switching valve and the chromatographic column is provided with second solenoid valve with the first solenoid valve synchro control.
The internal diameter of described precut valve is 2mm, is 2mm with its connecting line internal diameter.
Advantage and effect: the utility model provides a kind of device of quick detection hydrogen component, comprises carrier gas bottle, decompressor, deep purifying device, sample introduction six-way valve, oxygen adsorber, chromatographic column, helium ionization detector, sample gas gas steel cylinder and connects their pipeline; Carrier gas bottle is connected to decompressor, decompressor is connected to the deep purifying device, deep purifying device and sample gas, gas steel cylinder are connected to the oxygen adsorber by the sample introduction six-way valve, the oxygen adsorber is connected to chromatographic column, chromatographic column is connected to helium ionization detector, pipeline before the described oxygen adsorber is provided with four-way switching valve, and four-way switching valve makes the carrier gas band sample gas by switching or enters chromatographic column or enter chromatographic column again behind the oxygen adsorber; Pipeline after the described chromatographic column is provided with precut valve, and precut valve excises prevention by switching to the component that regularly flows out does not need component to enter helium ionization detector.
The total analysis of oxygen (argon), nitrogen, carbon monoxide, carbon dioxide, methane during this utility model provides and realized hydrogen on an instrument.Do not need sample is carried out pre-concentration, save time and gas sample gas consumption is little, analysis result is introduced because of personnel operation error reduces greatly.The analytical test process does not have unsafe factor.It is more accurately reliable to analyze data, only needs 10 minutes from sample introduction to providing data.
This utility model is reequiped on original high purity oxygen analyser basis.The high purity oxygen analyser is equipped with helium ionization detector, and this detecting device all has good detection limit to each impurity in the High Purity Hydrogen.Specifically mainly the instrument air-channel system is reequiped, behind sampling valve, add a cover four-way valve before the oxygen adsorber.When carrying out using oxygen adsorber gas circuit when high purity oxygen is analyzed, when carrying out using the hydrogen gas circuit when hydrogen is analyzed.After chromatographic column, add a cover precut column, the hydrogen component that flows out is earlier excised, allow other flow out component then and enter detecting device.
Description of drawings:
Fig. 1 is the original structure synoptic diagram.
Fig. 2 is a structural representation of the present utility model.
Embodiment: the utility model is described further below in conjunction with accompanying drawing:
As shown in Figure 2, the utility model provides a kind of device of quick detection hydrogen component, comprises carrier gas bottle 1, decompressor 2, deep purifying device 3, sample introduction six-way valve 4, oxygen adsorber 5, chromatographic column 6, helium ionization detector 7, sample gas gas steel cylinder 8 and connects their pipeline; Carrier gas bottle 1 is connected to decompressor 2, decompressor 2 is connected to deep purifying device 3, deep purifying device 3 and sample gas gas steel cylinder 8 are connected to oxygen adsorber 5 by sample introduction six-way valve 4, oxygen adsorber 5 is connected to chromatographic column 6, chromatographic column 6 is connected to helium ionization detector 7, pipeline before the described oxygen adsorber 5 is provided with four-way switching valve 9, and whether four-way switching valve 9 carries the carrier gas of sample gas by oxygen adsorber 5 by the Action Selection of valve own; Also be provided with precut valve 10 on the pipeline between described chromatographic column 6 and the helium ionization detector 7, deep purifying device 3 is connected to precut valve 10 by pipeline.Precut valve 10 carries out the selectivity cutting by valve self action to the material after separating through chromatographic column 6, and unwanted component excision back is blown down being cut component by the carrier gas in the pipeline between deep purifying device 3 and the precut valve 10.
The internal diameter of described four-way switching valve 9 is 2mm, and institute's connecting line internal diameter is 2mm; Pipeline between oxygen adsorber 5 and the chromatographic column 6 is provided with first solenoid valve, also is provided with second solenoid valve with the first solenoid valve synchro control on the pipeline between four-way switching valve 9 and the chromatographic column 6; And the internal diameter of described precut valve 10 is 2mm, and institute's connecting line internal diameter is 2mm, can guarantee the efficient stable of this device like this.
This device in use is chosen in four-way switching valve 9 and precut valve 10 the solid line B position among Fig. 2 when needs are analyzed high purity oxygen, second closed electromagnetic valve at this moment, and whole bypass system is in closed state.Carrier gas is being carried sample gas and is being flowed through after four-way valve 9 enters oxygen adsorber 5 by sample introduction six-way valve 4, flow into chromatographic column 6 by first solenoid valve of opening, sample gas flows into detecting device 7 through precut valve 10 solid line B positions and detects after carrying out the component separation through chromatographic column 6.Four-way switching valve 9 is threaded to dotted line A position by the B position when needs are analyzed High Purity Hydrogen, and (solid line is valve interconnecting tube road, can with tie point UNICOM) be first closed electromagnetic valve at this moment, and whole oxygen adsorber 5 systems are in closed state.Carrier gas is being carried the hydrogen sample gas and is directly being entered chromatographic column 6 by sample introduction six-way valve 4 four-way valve 9 of flowing through by second solenoid valve of opening, after sample gas is carried out the component separation through chromatographic column 6, be threaded to dotted line A position by solid line B position rapidly when precuting valve 10 during 0.9min behind the sample introduction, when sample injection time to 2.5 minute, will precut valve 10 and be threaded to solid line B position by dotted line A position, so just major constituent hydrogen is excised, make it not to produce and influence such as cover the impurity chromatographic peak, by the time all chromatographic peaks of 13min are once analyzed and are finished after rolling.
This utility model utilizes original high purity oxygen analyser to reequip, and the analyser air-channel system is transformed, and making it to be fit to analytic sample increases, and has not only reduced investment outlay but also simplified analytical approach also to make analysis result more in time reliable simultaneously.

Claims (3)

1. quick device that detects hydrogen component comprises carrier gas bottle (1), decompressor (2), deep purifying device (3), sample introduction six-way valve (4), oxygen adsorber (5), chromatographic column (6), helium ionization detector (7), sample gas gas steel cylinder (8) and connects their pipeline; Carrier gas bottle (1) is connected to decompressor (2), decompressor (2) is connected to deep purifying device (3), deep purifying device (3) and sample gas gas steel cylinder (8) are connected to oxygen adsorber (5) by sample introduction six-way valve (4), oxygen adsorber (5) is connected to chromatographic column (6), chromatographic column (6) is connected to helium ionization detector (7), it is characterized in that: the preceding pipeline of described oxygen adsorber (5) is provided with selection and carries the four-way switching valve (9) whether the carrier gas of sample gas passes through oxygen adsorber (5), and four-way switching valve (9) also is connected to chromatographic column (6) by pipeline; Also be provided with precut valve (10) on the pipeline between described chromatographic column (6) and the helium ionization detector (7), deep purifying device (3) is connected to precut valve (10) by pipeline.
2. the device of a kind of quick detection hydrogen component according to claim 1, the internal diameter that it is characterized in that described four-way switching valve (9) is 2mm, institute's connecting line internal diameter is 2mm, pipeline between oxygen adsorber (5) and the chromatographic column (6) is provided with first solenoid valve, and the pipeline between four-way switching valve (9) and the chromatographic column (6) is provided with second solenoid valve with the first solenoid valve synchro control.
3. the device of a kind of quick detection hydrogen component according to claim 1 is characterized in that: the internal diameter of described precut valve (10) is 2mm, is 2mm with its connecting line internal diameter.
CN2010201192754U 2010-02-26 2010-02-26 Device for rapidly detecting constituents of hydrogen Expired - Fee Related CN201637728U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103134875A (en) * 2011-12-01 2013-06-05 中国科学院大连化学物理研究所 On-line pretreatment device of aquatic volatile organic compounds
CN103424490A (en) * 2013-08-23 2013-12-04 上海华爱色谱分析技术有限公司 Gas chromatograph with plasma emission detector
CN103983799A (en) * 2014-05-26 2014-08-13 中国科学技术大学 Pulse sampling device for gas, pulse sampling method, and application of method
CN104713975A (en) * 2015-02-09 2015-06-17 沈阳石蜡化工有限公司 Method for simultaneously detecting contents of hydrocarbon impurities and nitrogen impurity in hydrogen
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103134875A (en) * 2011-12-01 2013-06-05 中国科学院大连化学物理研究所 On-line pretreatment device of aquatic volatile organic compounds
CN103424490A (en) * 2013-08-23 2013-12-04 上海华爱色谱分析技术有限公司 Gas chromatograph with plasma emission detector
CN103983799A (en) * 2014-05-26 2014-08-13 中国科学技术大学 Pulse sampling device for gas, pulse sampling method, and application of method
CN104713975A (en) * 2015-02-09 2015-06-17 沈阳石蜡化工有限公司 Method for simultaneously detecting contents of hydrocarbon impurities and nitrogen impurity in hydrogen
CN104713975B (en) * 2015-02-09 2017-05-03 沈阳石蜡化工有限公司 Method for simultaneously detecting contents of hydrocarbon impurities and nitrogen impurity in hydrogen
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

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C17 Cessation of patent right
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Granted publication date: 20101117

Termination date: 20130226