Online analysis pretreatment device for trace hydrogen isotopes in natural gas
A micro-trace and isotope technology, applied in the field of analytical chemistry, can solve the problems of labor-intensive operation, time-consuming, and inconvenient testing in the processing process, so as to improve the analysis efficiency and avoid the effect of the pre-treatment process
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[0044] Such as figure 1 and figure 2 As shown, a pretreatment device for on-line analysis of micro-trace hydrogen isotopes in natural gas, including:
[0045] Sample chamber 103, six-way valve 109, adsorption cold trap 105, pre-enrichment cold trap 107 and enrichment cold trap 111,
[0046] The sample chamber 103 is connected to an adsorption cold trap 105, and the adsorption cold trap 105 is connected to a six-way valve 109. Connect the column,
[0047] The six-way valve 109 is respectively connected to the helium pressure regulating valve B108 and the gas path venting valve D110;
[0048] The inlet and outlet of the sample chamber 103 are provided with an air vent valve A101 and an air vent valve B102;
[0049] A gas path vent valve C106 is provided between the adsorption cold trap 105 and the six-way valve 109;
[0050] When the six-way valve 109 is placed in the sampling state, the adsorption cold trap 105 and the pre-enrichment cold trap 107 are connected in series,...
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