Method for recovering oxidation function of oxidizing furnace packing in methane enrichment analyzer

An oxidation furnace and analyzer technology, which is applied to the field of restoring the oxidation function of the packing used in the oxidation furnace of the methane enrichment analyzer, can solve the problems of weakening oxidation ability, affecting the sample conversion rate and analysis accuracy, etc., and achieves the restoration of oxidation ability and good use. And the effect of promoting value and saving test costs

Inactive Publication Date: 2015-01-28
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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Problems solved by technology

With the increase of the number of samples to be tested, the consumption of copper oxide in the oxidation furnace increases, and the oxidation ability weakens, which affects the conversion rate and analysis accuracy of the sample. It is necessary to replace the (quartz) reaction tube and filling consumables at the same time to solve the problem.

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  • Method for recovering oxidation function of oxidizing furnace packing in methane enrichment analyzer

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Embodiment Construction

[0011] Below, in conjunction with accompanying drawing, this method is further described:

[0012] Such as figure 1 As shown, the method for recovering the oxidation function of the oxidation furnace filler in the methane enrichment analyzer mainly includes: sample tube 1, sample tube valve 2, sample guide valve 3, oxygen injection valve 4, chemical trap 5, pre-freezing cold trap 6. Water trap 7, enrichment cold trap 8, transfer cold trap 9, adsorption water trap 10, oxidation furnace 11, Cr reaction furnace 12, chromatographic column 13, gas stable isotope ratio mass spectrometer (MS) 14, six channels Eight contacts of valve B and eight-way valve C: c1, c2, c3, c4, c5, c6, c7, c8.

[0013] While the gas sample contained in the sample tube 1 enters the chemical trap 5 through the sample tube valve 2, the He carrier gas with a flow rate of 12ml / min is introduced from the sample guide valve 3, and after passing through the chemical trap 5 and the pre-freezing cold trap 6, the ...

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Abstract

The invention discloses a method for recovering the oxidation function of oxidizing furnace packing in a methane enrichment analyzer. According to the method, a mode that oxygen is automatically replenished to the oxidizing furnace in time is mainly adopted to maintain the oxidation property of an oxidant CuO in the oxidizing furnace. By adopting the method, repeated use of an oxidation (quartz) tube and packing copper oxide can be achieved simultaneously, so that the cost is reduced, and the analysis testing efficiency is improved.

Description

technical field [0001] The present invention relates to a method for restoring the oxidation function of packing used in an oxidation furnace of a methane enrichment analyzer. Background technique [0002] Atmospheric methane is one of the most important greenhouse gases affecting global climate change. The methane enrichment analyzer is an instrument used to detect the stable isotope ratio of carbon and hydrogen in methane samples. Its main principle is: introduce greenhouse gas samples under He carrier gas, and remove CO in the air by chemical traps and pre-frozen cold traps. and other miscellaneous gases, and then enter the oxidation furnace for oxidation, and the CO generated after oxidation 2 Enter the gas isotope mass spectrometer to complete the detection of the carbon stable isotope ratio in methane; the generated H 2 O is released from the water-collecting cold trap and enters the Cr reactor to react to generate H 2 , and then introduced into a gas isotope mass s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/08G01N30/72
Inventor 王肖波孙维贞
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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