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Hydrogen energy detector
The hydrogen used in hydrogen fuel cells requires a certain level of purity, and impurities such as sulfur, carbon, and ammonia in the hydrogen have a
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The hydrogen used in hydrogen fuel cells requires a certain level of purity, and impurities such as sulfur, carbon, and ammonia in the hydrogen have a serious impact on the service life of fuel cell proton exchange membranes and catalysts.
One According to the standard:
T/CCGA40001-2019 "Liquid Hydrogen"
Hydrogen fuel — Product specification ISO 14687-2
II Standard parameters:
| project name | T/CCGA40001-2019 "Liquid Hydrogen" | Hydrogen fuel — Product specification |
| ISO 14687-2 | ||
| Hydrogen purity (mole fraction) | ≥99.9999 % | 99.97% |
| Intermediate hydrogen (P-H2) | ≥95.0% | -- |
| Oxygen (O2)+Argon (Ar) | ＜0.1 ppm | -- |
| Nitrogen (N2) | ＜0.2 ppm | -- |
| Water (H2O) | 0.2ppm | 5PPM |
| Total hydrocarbons (calculated as methane) | ＜0.05 ppm | 2PPM |
| Oxygen (O2) | -- | 5PPM |
| Helium (He) | -- | 300PPM |
| Nitrogen (N2) and argon (Ar) | -- | 100PPM |
| Carbon dioxide (CO2) | ＜0.05 ppm | 2PPM |
| Carbon monoxide (CO) | ＜0.05 ppm | 0.2PPM |
| Total sulfur (calculated as H2S) | ＜0.004 ppm | 0.004PPM |
| Formaldehyde (HCHO) | ＜0.01 ppm | 0.01PPM |
| Formic acid (HCOOH) | ＜0.2 ppm | 0.2PPM |
| Ammonia (NH3) | ＜0.1 ppm | 0.1PPM |
| Total halogenated compounds (calculated by halide ions) | ＜0.05 ppm | 0.05PPM |
| Maximum particle concentration | -- | 1PPM |
Instrument configuration
GC-9560-PDD1 is equipped with a helium ion detector to detect formaldehyde, formic acid, and ammonia in liquid hydrogen
GC-9560-PDD2 is equipped with a helium ion detector to detect oxygen, argon, nitrogen, methane, carbon monoxide, and carbon dioxide in liquid hydrogen
GC-9560-FPD/TCD is equipped with FPD detector and TCD detector to detect total sulfur and secondary hydrogen in liquid hydrogen
Dew point meter is used to detect trace water content in liquid hydrogen
Ion chromatography is used to detect total halides in liquid hydrogen
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