CN209911312U - On-line analysis system for analyzing trace impurities in liquid chlorine - Google Patents
On-line analysis system for analyzing trace impurities in liquid chlorine Download PDFInfo
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- CN209911312U CN209911312U CN201920055551.6U CN201920055551U CN209911312U CN 209911312 U CN209911312 U CN 209911312U CN 201920055551 U CN201920055551 U CN 201920055551U CN 209911312 U CN209911312 U CN 209911312U
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Abstract
The utility model discloses an online analytic system for liquid chlorine trace impurity analysis, including first diverter valve, second diverter valve and third diverter valve: the method comprises the following steps of (1) sampling and analyzing liquid chlorine gas by changing different channel forms; the first quantitative pipe and the second quantitative pipe: the device is used for quantitatively obtaining liquid chlorine gas to be detected; first, second, third, and fourth carrier gases: for driving the flow of the liquid chlorine gas in the pipeline; a first, second, third, and fourth chromatography column: used for separating different components in the liquid chlorine gas; first needle valve, second needle valve and third needle valve: for controlling the flow of gas when venting; a helium ion detector: be used for detecting impurity composition in the liquid chlorine gas, the utility model provides a system can have very high security and stability to the online continuous cycle analysis of trace impurity in the liquid chlorine, and the detectivity of this system is high and good reproducibility simultaneously.
Description
Technical Field
The utility model relates to an online analysis technical field specifically is an online analytic system for liquid chlorine trace impurity analysis.
Background
The liquid chlorine is liquid chlorine, is yellow green liquid, is a basic chemical raw material, can be used in metallurgy, textile, papermaking and other industries, and is also a raw material for synthesizing hydrochloric acid, polyvinyl chloride, plastics and pesticides. In recent years, with the development of science and technology, the purity requirement of liquid chlorine is higher and higher, and the presence of some trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, carbon dioxide and the like can influence the purity of the liquid chlorine, and the production process of the liquid chlorine is continuously produced on line. Therefore, an on-line detection instrument is needed to monitor and analyze the signal in real time.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the background art, the utility model provides an online analytic system for liquid chlorine trace impurity analysis.
In order to achieve the above object, the utility model provides a following technical scheme: an on-line analysis system for liquid chlorine trace impurity analysis, comprising:
first, second, and third switching valves: the method comprises the following steps of (1) sampling and analyzing liquid chlorine gas by changing different channel forms;
the first quantitative pipe and the second quantitative pipe: the gas path of the switching valve is communicated for quantitatively obtaining the liquid chlorine gas to be detected;
first, second, third, and fourth carrier gases: the liquid chlorine gas is introduced from an interface of the switching valve and is used for driving the liquid chlorine gas to flow in the pipeline;
a first, second, third, and fourth chromatography column: the liquid chlorine gas is obtained by communicating with the gas path of the switching valve, and different components in the liquid chlorine gas are separated;
first needle valve, second needle valve and third needle valve: the air channel of the switching valve is communicated with the air channel of the switching valve and is used for controlling the flow of the air during the air discharge;
a helium ion detector: and the gas path of the switching valve is communicated with the gas path of the switching valve, so that the impurity components in the liquid chlorine gas can be detected.
As an optimized technical scheme, the utility model also comprises an explosion-proof system, and the system is arranged in the explosion-proof cabinet.
As an optimized technical scheme of the utility model, be provided with the liquid chlorine alarm in the explosion-proof rack.
As a preferred technical scheme of the utility model, the No. 1 interface of the first switching valve is connected with a sample inlet gas circuit pipeline; the No. 2 interface of the first switching valve is connected with the No. 1 interface of the second switching valve through an air channel pipeline; the No. 3 interface and the No. 10 interface of the first switching valve are connected through a gas path pipeline, and the first quantitative pipe is arranged on the gas path pipeline; the No. 4 interface of the first switching valve is connected with the second carrier gas through a gas circuit pipeline; the No. 5 interface and the No. 9 interface of the first switching valve are connected through a gas path pipeline, and the first chromatographic column is arranged on the section of the gas path pipeline; the No. 6 interface of the first switching valve is connected with the No. 6 interface of the third switching valve through a gas path pipeline, and the second chromatographic column is arranged on the section of the gas path pipeline; the No. 7 interface of the first switching valve is connected with the first carrier gas through a gas path pipeline; and the No. 8 interface of the first switching valve is connected with the first needle valve through an air channel pipeline.
As a preferred technical solution of the present invention, the No. 2 interface of the second switching valve is connected to the sample outlet through the gas path pipeline; the No. 3 interface and the No. 10 interface of the second switching valve are connected through a gas path pipeline, and the second quantitative pipe is arranged on the gas path pipeline; the No. 4 interface of the second switching valve is connected with the fourth carrier gas through a gas circuit pipeline; the No. 5 and No. 9 interfaces of the second switching valve are connected through a gas path pipeline, and the third chromatographic column is arranged on the gas path pipeline; the No. 6 interface of the second switching valve is connected with the No. 2 interface of the third switching valve through a gas path pipeline, and the fourth chromatographic column is arranged on the section of the gas path pipeline; the No. 7 interface of the second switching valve is connected with the third carrier gas through a gas path pipeline; and the No. 8 interface of the second switching valve is connected with the second needle valve through an air pipeline.
As a preferred technical solution of the present invention, the interface No. 1 of the third switching valve is connected to the helium ion detector through a gas path pipeline; the No. 3 interface and the No. 5 interface of the third switching valve are connected through a gas path pipeline; and a No. 4 interface of the third switching valve is connected with the third needle valve through an air pipeline.
As an optimized technical proposal of the utility model, all the sections of gas circuit pipelines adopt Hastelloy pipelines.
As an optimal technical scheme of the utility model, first diverter valve adopts the ten way valve of VICI area purge gas with the second diverter valve, the third diverter valve adopts the six way valve of VICI area purge gas.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a system can have very high security and stability to the online continuous cycle analysis of trace impurity in the liquid chlorine, and the detectivity of this system is high and good reproducibility simultaneously.
Drawings
FIG. 1 is a schematic diagram of a sampling state of an on-line analysis system for analyzing trace impurities in liquid chlorine according to the present invention;
FIG. 2 is a schematic diagram of an analysis state of an on-line analysis system for analyzing trace impurities in liquid chlorine according to the present invention;
in the figure: 1-a first dosing tube; 2-a sample inlet; 3-a sample outlet; 4-a second dosing tube; 5-a first switching valve; 6-a second switching valve; 7-a third switching valve; 8-a first carrier gas; 9-a second carrier gas; 10-a third carrier gas; 11-a fourth carrier gas; 12-a first needle valve; 13-a second needle valve; 14-a third needle valve; 15-a first chromatography column; 16-a second chromatography column; 17-a third chromatography column; 18-fourth column; 19-helium ion detector; 20-an explosion-proof cabinet; 21-liquid chlorine alarm.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
the utility model provides an online analytic system for liquid chlorine trace impurity analysis, include:
first quantitative pipe 1 and second quantitative pipe 4: the gas path of the switching valve is communicated for quantitatively obtaining the liquid chlorine gas to be detected;
first carrier gas 8, second carrier gas 9, third carrier gas 10, and fourth carrier gas 11: the liquid chlorine gas is introduced from an interface of the switching valve and is used for driving the liquid chlorine gas to flow in the pipeline;
first, second, third and fourth chromatography columns 15, 16, 17, 18: the liquid chlorine gas is obtained by communicating with the gas path of the switching valve, and different components in the liquid chlorine gas are separated;
helium ion detector 19: and the gas path of the switching valve is communicated with the gas path of the switching valve, so that the impurity components in the liquid chlorine gas can be detected.
The concrete connection is as follows: the No. 1 interface of the first switching valve 5 is connected with the gas path pipeline of the sample inlet 2; the No. 2 interface of the first switching valve 5 is connected with the No. 1 interface of the second switching valve 6 through an air channel pipeline; the No. 3 interface and the No. 10 interface of the first switching valve 5 are connected through a gas path pipeline, and the first quantitative pipe 1 is arranged on the gas path pipeline; the No. 4 interface of the first switching valve 5 is connected with a second carrier gas 9 through a gas circuit pipeline; the No. 5 interface and the No. 9 interface of the first switching valve 5 are connected through a gas path pipeline, and the first chromatographic column 15 is arranged on the section of the gas path pipeline; the No. 6 interface of the first switching valve 5 is connected with the No. 6 interface of the third switching valve 7 through a gas path pipeline, and the second chromatographic column 16 is arranged on the section of the gas path pipeline; the No. 7 interface of the first switching valve 5 is connected with the first carrier gas 8 through a gas path pipeline; the No. 8 interface of the first switching valve 5 is connected with the first needle valve 12 through an air channel pipeline.
The No. 2 interface of the second switching valve 6 is connected with the sample outlet 3 through a gas pipeline; the No. 3 interface and the No. 10 interface of the second switching valve 6 are connected through a gas path pipeline, and the second quantitative pipe 4 is arranged on the gas path pipeline; the No. 4 interface of the second switching valve 6 is connected with the fourth carrier gas 11 through a gas circuit pipeline; the No. 5 and No. 9 interfaces of the second switching valve 6 are connected through a gas pipeline, and the third chromatographic column 17 is arranged on the gas pipeline; the No. 6 interface of the second switching valve 6 is connected with the No. 2 interface of the third switching valve 7 through a gas pipeline, and the fourth chromatographic column 18 is arranged on the gas pipeline; the No. 7 interface of the second switching valve 6 is connected with the third carrier gas 10 through a gas path pipeline; and the No. 8 interface of the second switching valve 6 is connected with the second needle valve 13 through an air pipeline.
The No. 1 interface of the third switching valve 7 is connected with the helium ion detector 19 through a gas pipeline; the No. 3 interface and the No. 5 interface of the third switching valve 7 are connected through a gas path pipeline; and a No. 4 connector of the third switching valve 7 is connected with the third needle valve 14 through an air pipeline.
As shown in fig. 1, during sampling, vaporized liquid chlorine enters port 1 of the first switching valve 5 from the sample inlet 2, passes through the first quantitative pipe 1, enters the second quantitative pipe 4 of the second switching valve 6 from port 2 of the first switching valve 5, and is discharged from port 2 of the second switching valve 6;
during the analysis, the first switching valve 5 is switched to the analysis state (as shown in fig. 2), and the second carrier gas 9 flows into the second chromatographic column 16 carrying the sample in the first quantitative tube 1 through the first chromatographic column 15; when methane completely enters the second chromatographic column 16, the first switching valve 5 is switched to reset to a sampling state (as shown in fig. 1), at this time, the first carrier gas 8 carries a sample passing through the first chromatographic column 15, after the sample is separated by the second chromatographic column 16, the helium ion detector 19 detects hydrogen, oxygen, nitrogen, methane and carbon monoxide therein, and at this time, the liquid chlorine gas in the first quantitative tube 1 is reset to the sampling state at the first switching valve and discharged through the first needle valve 12; the second switching valve 6 is switched to an analysis state (as shown in fig. 2), the fourth carrier gas 11 carries the sample in the second quantitative tube 4 to flow into the fourth chromatographic column 18 through the pre-analysis column and the third chromatographic column 17, impurities such as hydrogen, oxygen, nitrogen, methane and carbon monoxide separated from the fourth chromatographic column 18 are completely released by the third switching valve 7 and the third needle valve 14, the third switching valve 7 is switched to an analysis state (as shown in fig. 2) before the carbon dioxide comes out from the fourth chromatographic column 18, the carbon dioxide is further detected by the helium ion detector 19, and at this time, the liquid chlorine gas in the second quantitative tube 4 is released by the second needle valve 13 when the second switching valve 6 is reset to a sampling state (as shown in fig. 1).
In the specific implementation process, still include explosion-proof system, this system sets up in explosion-proof rack 20, be provided with liquid chlorine alarm 21 in the explosion-proof rack 20, can provide fine safeguard measure for this system through explosion-proof rack 20, utilize liquid chlorine alarm 21 can detect whether have liquid chlorine gas body to leak.
In the specific implementation process, all sections of gas circuit pipelines are Hastelloy pipelines, and the pipelines have strong corrosion resistance.
In a specific implementation process, the first switching valve 5 and the second switching valve 6 adopt a ten-way valve with VI CI purge gas, and the third switching valve 7 adopts a six-way valve with VI CI purge gas.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An on-line analysis system for analyzing trace impurities in liquid chlorine, comprising:
first, second, and third switching valves: the method comprises the following steps of (1) sampling and analyzing liquid chlorine gas by changing different channel forms;
the first quantitative pipe and the second quantitative pipe: the gas path of the switching valve is communicated for quantitatively obtaining the liquid chlorine gas to be detected;
first, second, third, and fourth carrier gases: the liquid chlorine gas is introduced from an interface of the switching valve and is used for driving the liquid chlorine gas to flow in the pipeline;
a first, second, third, and fourth chromatography column: the liquid chlorine gas is obtained by communicating with the gas path of the switching valve, and different components in the liquid chlorine gas are separated;
first needle valve, second needle valve and third needle valve: the air channel of the switching valve is communicated with the air channel of the switching valve and is used for controlling the flow of the air during the air discharge;
a helium ion detector: and the gas path of the switching valve is communicated with the gas path of the switching valve, so that the impurity components in the liquid chlorine gas can be detected.
2. The on-line analysis system for liquid chlorine micro-impurity analysis according to claim 1, characterized in that: the explosion-proof system is arranged in the explosion-proof cabinet.
3. The on-line analysis system for liquid chlorine micro-impurity analysis according to claim 2, characterized in that: and a liquid chlorine alarm is arranged in the explosion-proof cabinet.
4. The on-line analysis system for liquid chlorine micro-impurity analysis according to claim 1, characterized in that: the No. 1 interface of the first switching valve is connected with a sample inlet gas path pipeline; the No. 2 interface of the first switching valve is connected with the No. 1 interface of the second switching valve through an air channel pipeline; the No. 3 interface and the No. 10 interface of the first switching valve are connected through a gas path pipeline, and the first quantitative pipe is arranged on the gas path pipeline; the No. 4 interface of the first switching valve is connected with the second carrier gas through a gas circuit pipeline; the No. 5 interface and the No. 9 interface of the first switching valve are connected through a gas path pipeline, and the first chromatographic column is arranged on the section of the gas path pipeline; the No. 6 interface of the first switching valve is connected with the No. 6 interface of the third switching valve through a gas path pipeline, and the second chromatographic column is arranged on the section of the gas path pipeline; the No. 7 interface of the first switching valve is connected with the first carrier gas through a gas path pipeline; and the No. 8 interface of the first switching valve is connected with the first needle valve through an air channel pipeline.
5. The on-line analysis system for liquid chlorine micro-impurity analysis according to claim 4, characterized in that: the No. 2 interface of the second switching valve is connected with the sample outlet through a gas pipeline; the No. 3 interface and the No. 10 interface of the second switching valve are connected through a gas path pipeline, and the second quantitative pipe is arranged on the gas path pipeline; the No. 4 interface of the second switching valve is connected with the fourth carrier gas through a gas circuit pipeline; the No. 5 and No. 9 interfaces of the second switching valve are connected through a gas path pipeline, and the third chromatographic column is arranged on the gas path pipeline; the No. 6 interface of the second switching valve is connected with the No. 2 interface of the third switching valve through a gas path pipeline, and the fourth chromatographic column is arranged on the section of the gas path pipeline; the No. 7 interface of the second switching valve is connected with the third carrier gas through a gas path pipeline; and the No. 8 interface of the second switching valve is connected with the second needle valve through an air pipeline.
6. The on-line analysis system for liquid chlorine micro-impurity analysis according to claim 5, characterized in that: the No. 1 interface of the third switching valve is connected with the helium ion detector through a gas pipeline; the No. 3 interface and the No. 5 interface of the third switching valve are connected through a gas path pipeline; and a No. 4 interface of the third switching valve is connected with the third needle valve through an air pipeline.
7. An on-line analysis system for liquid chlorine micro-impurity analysis according to any one of claims 1 to 6, characterized in that: all the sections of gas circuit pipelines adopt Hastelloy pipelines.
8. An on-line analysis system for liquid chlorine micro-impurity analysis according to any one of claims 1 to 6, characterized in that: the first switching valve and the second switching valve adopt ten-way valves with VICI purge gas, and the third switching valve adopts six-way valves with VICI purge gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920055551.6U CN209911312U (en) | 2019-01-14 | 2019-01-14 | On-line analysis system for analyzing trace impurities in liquid chlorine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920055551.6U CN209911312U (en) | 2019-01-14 | 2019-01-14 | On-line analysis system for analyzing trace impurities in liquid chlorine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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