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Device and method for rapid and accurate detection of impurities in high-purity hydrogen for hydrogen fuel cells

A fuel cell and high-purity hydrogen technology, which is applied in fuel cells, measuring devices, circuits, etc., can solve the problems of being unsuitable for hydrogen fuel cell hydrogen stations, inaccurate characterization, and long analysis time, achieving excellent qualitative analysis capabilities and improving detection performance , the effect of cost reduction

Active Publication Date: 2022-03-18
北京中计新科仪器有限公司 +1
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Problems solved by technology

[0005] The detection method of impurities in high-purity hydrogen for hydrogen fuel cells is based on chromatography, including TCD gas chromatography with variable temperature concentration and injection, HID gas chromatography, discharge gas chromatography, sulfur chemiluminescence detector (SCD), etc., which can be accurately quantified, but not precisely
Internationally, the method of using high-performance GC-MS equipped with a complex sampling system can be accurately identified and quantified, but the system is complex, expensive, and takes a long time to analyze, so it is not suitable for wide application in hydrogen stations for hydrogen fuel cells

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  • Device and method for rapid and accurate detection of impurities in high-purity hydrogen for hydrogen fuel cells
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  • Device and method for rapid and accurate detection of impurities in high-purity hydrogen for hydrogen fuel cells

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Embodiment Construction

[0061] Attached below Figure 1-2 And the following specific embodiments describe the present invention in detail.

[0062] Such as figure 1 As shown, the present invention discloses a rapid and accurate detection device for impurities in high-purity hydrogen used in hydrogen fuel cells, including an ion source-mass spectrometer for quadrupole hydrogen detection (hereinafter referred to as "EI (ion source) - quadrupole hydrogen detection mass spectrometer) Instrument") 161, six-way valve 101, first gas mass flow controller 111, second gas mass flow controller 132, capillary column for gas analysis and insulation system 141, hydrogen gas injection channel, sample gas injection channel, standard gas injection Channel and gas quantitative loop 121;

[0063] The two pipelines of the gas quantitative loop 1211 communicate with the two interfaces of the six-way valve 101 respectively, the hydrogen injection channel communicates with one interface of the six-way valve 101, and one ...

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Abstract

The invention provides a device and method for quickly and accurately detecting impurities in high-purity hydrogen used in hydrogen fuel cells. The present invention adopts the direct sample injection method, avoids complex sample pretreatment, greatly reduces cost and system complexity; quantitative sample injection with high-purity hydrogen as carrier gas, and standard gas as reference to realize accurate quantification; special mass spectrometer for hydrogen detection The device greatly improves the low-end mass resolution, detection stability and sensitivity, and its system stability is significantly better than that of general-purpose chromatography-mass spectrometry; the dedicated control software system includes automatic mass axis calibration, high-purity carrier gas automatic measurement, and standard gas quantitative automatic measurement , Sample quantitative automatic measurement, automatic calculation of impurity gas in the sample software module, built-in algorithm to realize measurement and control automation. These characteristics will be beneficial to the rapid and accurate determination of high-purity hydrogen impurities in hydrogen fuel cell hydrogen stations.

Description

technical field [0001] The invention relates to the field of rapid and accurate detection of impurities in high-purity hydrogen for hydrogen fuel cells, in particular to a device and method for rapid and accurate detection of impurities in high-purity hydrogen for hydrogen fuel cells based on mass spectrometry direct sample injection analysis technology. Background technique [0002] With the continuous development of science and technology and high requirements for environmental protection, the national economy's demand for clean energy is becoming more and more extensive. Hydrogen energy is recognized as a clean energy source and is emerging as a low-carbon and zero-carbon energy source. my country, the United States, Japan, Canada, the European Union, etc. have all formulated hydrogen energy development plans, and currently my country has made many progresses in the field of hydrogen energy, and is expected to become one of the leading countries in hydrogen energy technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/00H01J49/04H01M8/0444G01N27/62
CPCH01J49/0031H01J49/0036H01J49/0422H01M8/0444G01N27/62Y02E60/50
Inventor 熊行创刘震何文魁
Owner 北京中计新科仪器有限公司
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