Trace helium, neon and hydrogen gas analysis method and device

An analysis method and technology of hydrogen gas, which are applied in the direction of measurement device, analysis material, material separation, etc., to achieve the effect of shortening analysis time, avoiding influence, and stable separation and detection effect.

Inactive Publication Date: 2012-08-01
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The patent takes trace amounts of helium as the analysis target, and does not involve the separation and detection of trace amounts of helium-neon-hydrogen

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  • Trace helium, neon and hydrogen gas analysis method and device
  • Trace helium, neon and hydrogen gas analysis method and device
  • Trace helium, neon and hydrogen gas analysis method and device

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0032] A trace helium-neon-hydrogen gas analysis method, the method first separates the mixed gas sample for the first time, separates the helium-neon-hydrogen gas from other heavy gas components, and then separates the mixed gas components from other heavy gas components The gas sample is separated for the second time, and the three gas components of helium, neon and hydrogen are separated, and finally the three gas components of helium, neon and hydrogen are input into the thermal conductivity detector of the high-sensitivity gas chromatograph for detection; At the same time, the separated heavy gas components are emptied by backflushing method.

[0033] Such as Picture 1-1 and 1-2 As shown, a device for realizing the trace helium-neon-hydrogen gas analysis method, the device includes a gas chromatograph, a ten-way valve, a carrier gas inlet 101, a quantitative lo...

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Abstract

The invention provides a trace helium, neon and hydrogen gas analysis method and device, belonging to the field of separation and detection of helium, neon and hydrogen in natural gas. The method comprises the following steps: firstly carrying out a first separation on a mixed gas sample, separating helium, neon and hydrogen gases from other heavy gas components, then carrying out a second separation on the mixed gas sample without the other heavy gas components, separating helium, neon and hydrogen gases out respectively, and finally inputting the helium, neon and hydrogen one by one in a high-sensitivity gas chromatograph thermal conductivity detector for detection, and venting the separated heavy gas components by back flushing while conducting the detection. The device of the invention adopts a double-column series structure, and simultaneously optimizes chromatographic column packing materials and chromatographic analysis conditions. According to the invention, the effective separation and detection of trace helium, neon and hydrogen are realized, the analysis time is shortened, the analytical chromatographic columns are protected, and the service life of the chromatographic column is prolonged. The method can be continuously applied for trace helium, neon and hydrogen analysis of mass samples.

Description

technical field [0001] The invention belongs to the field of separation and measurement of trace amounts of helium-neon-hydrogen in natural gas, and specifically relates to a trace amount of helium-neon-hydrogen gas analysis method and device. The scope of application mainly includes surface oil and gas geochemical exploration, environmental investigation, geological unit division, certain metal mines exploration and earthquake prediction. Background technique [0002] As one of the geochemical exploration indicators for surface oil and gas, helium has been applied in the practice of oil and gas geochemical exploration. As non-hydrocarbon gas research has been paid more attention, the application range of helium index has also been expanded. It can not only be used in hydrocarbon-based oil and gas exploration, but also often used in non-hydrocarbon gas research. For natural gas reservoirs with methane as the main component and non-hydrocarbon gas reservoirs with carbon diox...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/66G01N30/46
Inventor 李吉鹏荣发准孙长青李武吴传芝
Owner CHINA PETROLEUM & CHEM CORP
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