CN108982724A - A kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis - Google Patents
A kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis Download PDFInfo
- Publication number
- CN108982724A CN108982724A CN201810916979.5A CN201810916979A CN108982724A CN 108982724 A CN108982724 A CN 108982724A CN 201810916979 A CN201810916979 A CN 201810916979A CN 108982724 A CN108982724 A CN 108982724A
- Authority
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- China
- Prior art keywords
- switching valve
- gas path
- path pipe
- interfaces
- interface
- 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.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000001301 oxygen Substances 0.000 title claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 16
- 238000004458 analytical method Methods 0.000 title claims abstract description 15
- 239000012535 impurity Substances 0.000 title claims abstract description 15
- HVTICUPFWKNHNG-UHFFFAOYSA-N iodoethane Chemical compound CCI HVTICUPFWKNHNG-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 46
- 239000001307 helium Substances 0.000 claims abstract description 9
- 229910052734 helium Inorganic materials 0.000 claims abstract description 9
- 238000010926 purge Methods 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000002161 passivation Methods 0.000 claims abstract description 3
- 239000012159 carrier gas Substances 0.000 claims description 13
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- UXPOJVLZTPGWFX-UHFFFAOYSA-N pentafluoroethyl iodide Chemical compound FC(F)(F)C(F)(F)I UXPOJVLZTPGWFX-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- GOFUXNCDNVHWEO-UHFFFAOYSA-N ICC.[F] Chemical compound ICC.[F] GOFUXNCDNVHWEO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/68—Flame ionisation detectors
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a kind of in-line analyzers for perfluor iodoethane trace impurity oxygen analysis, including the first switching valve and the second switching valve, chromatographic first chromatographic column and the second chromatographic column are connected with by gas path pipe in first switching valve, the chromatograph is transmitted to Central Control Room for data are analyzed；Second switching valve is connected with needle valve and helium ion detector by gas path pipe, each connecting pipe is all made of to be made by the stainless steel material that high temperature Passivation Treatment is crossed, ten-way valve and six-way valve of the VICI with purge gass is respectively adopted in first switching valve and second switching valve, the on-line continuous analysis of perfluor iodoethane trace impurity oxygen may be implemented in the present invention, safety and stability with higher, at the same also have the advantages that high sensitivity with it is reproducible.
Description
Technical field
The present invention relates to online monitoring instruments technical fields, specially a kind of for perfluor iodoethane trace impurity oxygen point
The in-line analyzer of analysis.
Background technique
Perfluor iodoethane (C2F5I) is colourless liquid or gas, is mainly used for telomerization and as fine chemical product
Raw material.In recent years, with the development of science and technology, production technology is also further improved, and the presence of oxygen impurities affects entirely
The optimization of fluorine iodoethane (C2F5I) manufacture craft, and then need on-line checking instrument to its Real Time Monitoring.
Summary of the invention
The problem of for background technique, the present invention provides one kind for perfluor iodoethane trace impurity oxygen point
The in-line analyzer of analysis.
To achieve the above object, the invention provides the following technical scheme: a kind of be used for perfluor iodoethane trace impurity oxygen
The in-line analyzer of analysis, including the first switching valve and the second switching valve pass through gas path pipe connection in first switching valve
Chromatographic first chromatographic column and the second chromatographic column, the chromatograph are transmitted to Central Control Room for data are analyzed；Second switching
Valve is connected with needle valve and helium ion detector by gas path pipe.
As a preferred technical solution of the present invention, No. 1 interface of first switching valve is connected with by gas path pipe
Sample inlet；No. 2 interfaces of first switching valve are connected with sample export by gas path pipe；First switching valve 3 connects
Mouth connect the quantity tube 3 of first switching valve with No. 10 interfaces by gas path pipe；No. 4 interfaces of first switching valve pass through gas
Road pipeline is connected with the first carrier gas port；No. 5 interfaces of first switching valve connect first switching valve 9 by gas path pipe and connect
Mouthful, first chromatographic column is connected on the gas path pipe；No. 6 interfaces of first switching valve by gas path pipe connect this
Two interfaces of switching valve 3, second chromatographic column are connected on the gas path pipe；No. 7 interfaces of first switching valve pass through gas
Road pipeline is connected with the second carrier gas port；No. 8 interfaces of first switching valve connect second switching valve 1 by gas path pipe
Interface.
As a preferred technical solution of the present invention, No. 2 interfaces of second switching valve by gas path pipe with it is described
The connection of helium ion detector, No. 4 interfaces of second switching valve are connect with the needle valve, No. 5 interfaces of second switching valve
No. 6 interfaces of second switching valve are connected by short circuit line.
As a preferred technical solution of the present invention, the short circuit line is all made of blunt by high temperature with each gas path pipe
Change processed stainless steel material to be made, VICI is respectively adopted with purge gass in first switching valve and second switching valve
Ten-way valve and six-way valve.
Compared with prior art, the beneficial effects of the present invention are: perfluor iodoethane trace impurity oxygen may be implemented in the present invention
The on-line continuous of gas is analyzed, safety and stability with higher, at the same also have the advantages that high sensitivity with it is reproducible.
Detailed description of the invention
Fig. 1 is overall structure diagram under sampling state of the present invention；
Fig. 2 is overall structure diagram under analysis state of the present invention；
In figure: the first switching valve of 1-；The second switching valve of 2-；3- quantity tube；The first chromatographic column of 4-；The second chromatographic column of 5-；6-
Needle valve；7- helium ion detector；8- sample inlet；9- sample export；The first carrier gas port of 10-；The second carrier gas port of 11-；12- is short
Adapter tube road.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis, including the first switching
Valve 1 and the second switching valve 2 are connected with chromatographic first chromatographic column 4 and second by gas path pipe in first switching valve 1
Chromatographic column 5, the chromatograph are transmitted to Central Control Room for data are analyzed；Second switching valve 2 is connected with needle by gas path pipe
Type valve 6 and helium ion detector 7.
No. 1 interface of specific first switching valve 1 is connected with sample inlet 8 by gas path pipe；Described first cuts
No. 2 interfaces for changing valve 1 are connected with sample export 9 by gas path pipe；No. 3 interfaces and No. 10 interfaces of first switching valve 1
The quantity tube 3 of first switching valve 1 is connected by gas path pipe；No. 4 interfaces of first switching valve 1 are connected by gas path pipe
It is connected to the first carrier gas port 10；No. 5 interfaces of first switching valve 1 are connect by No. 9 that gas path pipe connects first switching valve 1
Mouthful, first chromatographic column 4 is connected on the gas path pipe；No. 6 interfaces of first switching valve 1 are connected by gas path pipe
No. 3 interfaces of second switching valve 2, second chromatographic column 5 are connected on the gas path pipe；No. 7 of first switching valve 1
Interface is connected with the second carrier gas port 11 by gas path pipe；No. 8 interfaces of first switching valve 1 connect institute by gas path pipe
State No. 1 interface of the second switching valve 2.
No. 2 interfaces of second switching valve are connect by gas path pipe with the helium ion detector 7, second switching
No. 4 interfaces of valve 2 are connect with the needle valve 6, No. 5 interfaces of second switching valve 2 by short circuit line 12 connect this
No. 6 interfaces of two switching valves 2.
The short circuit line 12 is all made of with each gas path pipe to be made by the stainless steel material that high temperature Passivation Treatment is crossed, institute
It states the first switching valve 1 and ten-way valve and six-way valve of the VICI with purge gass is respectively adopted with second switching valve 2.
The course of work of the present invention is divided into two parts:
1, sampling process: as shown in Figure 1, sample enters No. 1 interface of the first switching valve 1 from sample inlet 8, then pass through
Quantity tube 3, then be transmitted to sample export 9 from 2 mouthfuls of interfaces of the first switching valve 1 and release；
2, analytic process: as shown in Fig. 2, the first switching valve 1 of switching, carrier gas 1 carry in quantity tube 3 from the first carrier gas port 10
Sample pass through the first chromatographic column 4；Carrier gas 2 is carried through the sample of the first chromatographic column 4 from the second carrier gas port 11, then passes through second
Chromatographic column 5 detects oxygen by helium ion detector 7；Other heavy constituents are carried when the first switching valve 1 is resetted by carrier gas 1
The needle valve 6 for being retained in No. 4 interface connection of the heavy constituent in the first chromatographic column 4 Jing Guo the second switching valve 2 is released.
Based on above-mentioned, present invention has the advantage that: perfluor iodoethane trace impurity oxygen may be implemented in the present invention
On-line continuous analysis, safety and stability with higher, at the same also have the advantages that high sensitivity with it is reproducible.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis, including the first switching valve (1) and second
Switching valve (2), it is characterised in that: chromatographic first chromatographic column is connected with by gas path pipe on first switching valve (1)
(4) and the second chromatographic column (5), the chromatograph are transmitted to Central Control Room for data are analyzed；Second switching valve (2) passes through gas circuit
Pipeline is connected with needle valve (6) and helium ion detector (7).
2. a kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis according to claim 1, special
Sign is: (1) No. 1 interface of first switching valve is connected with sample inlet (8) by gas path pipe；First switching valve
(1) No. 2 interface is connected with sample export (9) by gas path pipe；(1) No. 3 interface of first switching valve and No. 10 interfaces are logical
Cross the quantity tube (3) that gas path pipe connects first switching valve (1)；(1) No. 4 interface of first switching valve passes through gas path pipe
Connect the first carrier gas port (10)；(1) No. 5 interface of first switching valve connects first switching valve (1) 9 by gas path pipe
Interface, first chromatographic column (4) are connected on the gas path pipe；(1) No. 6 interface of first switching valve passes through gas path pipe
(2) No. 3 interfaces of second switching valve are connected, second chromatographic column (5) is connected on the gas path pipe；First switching valve
(1) No. 7 interface is connected with the second carrier gas port (11) by gas path pipe；(1) No. 8 interface of first switching valve passes through gas circuit pipe
Road connects described (2) No. 1 interfaces of second switching valve.
3. a kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis according to claim 2, special
Sign is: (2) No. 2 interfaces of second switching valve are connect by gas path pipe with the helium ion detector (7), and described second
(2) No. 4 interfaces of switching valve are connect with the needle valve (6), and (2) No. 5 interfaces of second switching valve pass through short circuit line (12)
Connect (2) No. 6 interfaces of second switching valve.
4. any a kind of on-line analysis for perfluor iodoethane trace impurity oxygen analysis in -3 according to claim 1
Instrument, it is characterised in that: the short circuit line (12) and each gas path pipe are all made of the stainless steel crossed by high temperature Passivation Treatment
Matter is made, and first switching valve (1) and second switching valve (2) are respectively adopted ten-way valve of the VICI with purge gass and six and lead to
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916979.5A CN108982724A (en) | 2018-08-13 | 2018-08-13 | A kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916979.5A CN108982724A (en) | 2018-08-13 | 2018-08-13 | A kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108982724A true CN108982724A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810916979.5A Pending CN108982724A (en) | 2018-08-13 | 2018-08-13 | A kind of in-line analyzer for perfluor iodoethane trace impurity oxygen analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108982724A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633057A (en) * | 2019-01-14 | 2019-04-16 | 朗析仪器（上海）有限公司 | The on-line analysis system of trace impurity in a kind of refrigerant |
| CN109633056A (en) * | 2019-01-14 | 2019-04-16 | 朗析仪器（上海）有限公司 | A kind of on-line analysis system for liquid chlorine Analysis of Micro-amount Impurities In Liquid |
| CN111398484A (en) * | 2020-04-27 | 2020-07-10 | 深圳供电局有限公司 | Used for detecting SF in transformer oil dissolved gas6Gas chromatograph |
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| CN204359757U (en) * | 2015-01-19 | 2015-05-27 | 大连中汇达科学仪器有限公司 | A kind of New type coal methanol project special-purpose gas chromatograph |
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| CN206450642U (en) * | 2016-10-31 | 2017-08-29 | 广东电网有限责任公司电力科学研究院 | A kind of recharging type sulfur hexafluoride decomposition product chromatogram on-line detector |
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2018
- 2018-08-13 CN CN201810916979.5A patent/CN108982724A/en active Pending
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| JPH07287001A (en) * | 1994-04-18 | 1995-10-31 | Kanto Denka Kogyo Co Ltd | Method and apparatus for analyzing impurity gas in fluorine gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633057A (en) * | 2019-01-14 | 2019-04-16 | 朗析仪器（上海）有限公司 | The on-line analysis system of trace impurity in a kind of refrigerant |
| CN109633056A (en) * | 2019-01-14 | 2019-04-16 | 朗析仪器（上海）有限公司 | A kind of on-line analysis system for liquid chlorine Analysis of Micro-amount Impurities In Liquid |
| CN109633056B (en) * | 2019-01-14 | 2023-12-22 | 朗析仪器（上海）有限公司 | On-line analysis system for analyzing trace impurities of liquid chlorine |
| CN111398484A (en) * | 2020-04-27 | 2020-07-10 | 深圳供电局有限公司 | Used for detecting SF in transformer oil dissolved gas6Gas chromatograph |
| CN111398484B (en) * | 2020-04-27 | 2022-04-08 | 深圳供电局有限公司 | Used for detecting SF in transformer oil dissolved gas6Gas chromatograph |
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Application publication date: 20181211 |