Rare gas chromatograph analysis system and detection method thereof

By utilizing a rare gas chromatography system with a redox catalytic reactor and a tandem 13X molecular sieve column, the problems of difficult oxygen-argon separation and poor separation degree in rare gas chromatography analysis have been solved, achieving efficient detection of multiple components and making it applicable to a wide range of fields.

CN116718719BActive Publication Date: 2026-06-19中天合创能源有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中天合创能源有限责任公司
Filing Date
2023-07-07
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing rare gas chromatographic analysis suffers from problems such as the inability to separate oxygen and argon, poor separation of helium and neon, limited analyzable items, insufficient detection sensitivity, and easy failure and regeneration difficulties of deoxygenation columns and dehydrogenators.

⚗Method used

A rare gas chromatography system is used, including a first hydrogen pipeline, a second hydrogen pipeline, a first argon pipeline, a second argon pipeline, a multi-way valve, a pre-separation column, and a detection pipeline. The system uses a redox catalytic reactor for deoxygenation, and combines a tandem column of 13X molecular sieve and coconut shell fixed carbon chromatography for component separation and detection.

🎯Benefits of technology

It enables simultaneous analysis of oxygen and argon components and efficient separation of helium and neon. It can quickly and accurately detect the content of multiple rare gas components in a gas with a single injection, has a wide range of applications, and has replaced some national standard methods.

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Abstract

This invention provides a chromatographic analysis system for determining rare gases using chemical deoxygenation coupled with gas chromatography and a 13X molecular sieve and coconut shell activated carbon column. The system includes two thermal conductivity detectors, two multi-port valves, two pre-separation columns, two analytical columns, and a redox catalytic reactor. The pre-separation columns separate CO2, hydrogen sulfide, and C2+ impurities from the vented sample gas. Oxygen in one analyte is removed by the redox catalytic reactor, allowing for the determination of argon content in the sample gas. Oxygen in the other analyte is detected using argon as a carrier gas, solving the problem of oxygen-argon separation. One analytical column uses a 13X molecular sieve and coconut shell activated carbon column in series, providing good separation of helium and neon. This system can rapidly and accurately detect the content of helium, neon, argon, krypton, xenon, hydrogen, oxygen, nitrogen, carbon monoxide, and methane in a single injection.
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