Sinopec and the Petroleum Research Institute have applied for patents related to the determination of hydrogen composition, enabling the simultaneous detection of trace sulfur and carbon compounds in hydrogen with a single sample insertion

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According to reports from the 2nd of the month, **information from the Intellectual Property Office shows that Sinopec Corporation and Sinopec Research Institute of Petroleum Chemistry have filed a patent application for a system and method titled “A system and method for simultaneously and continuously detecting trace sulfur-containing compounds and carbon-containing compounds in hydrogen.” Application publication number: CN121933665A; Application number: CN202411513646.X. Publication date: April 28, 2026; Application date: October 28, 2024. Inventors: Zhang Yiwei, Wang Yamin. Patent agency: Beijing Yingchuang Jiayou Intellectual Property Agency Co., Ltd. Patent agent: Cheng Yuqing. Classification codes: G01N30/16, G01N30/60, G01N30/64. The patent abstract indicates that this disclosure relates to a system and method for simultaneously and continuously measuring trace sulfur-containing compounds and carbon-containing compounds in hydrogen. The system includes a sample inlet, as well as a carbon-containing compound detection unit and a sulfur-containing compound detection unit connected in parallel to said sample inlet ； The carbon-containing compound detection unit includes a first controller, a first sampler, a quantification loop, a first chromatography column, and a first enhanced plasma discharge detector that are connected in sequence ； The sulfur-containing compound detection unit includes a second controller, a second sampler, a capture trap, a second chromatographic column, and a second enhanced plasma discharge detector connected in sequence. The system disclosed herein can simultaneously perform qualitative and quantitative analysis of trace sulfur-containing compounds and carbon-containing compound impurities in the sample gas to be analyzed, using only one injection ； Furthermore, the system disclosed herein has a lower detection limit for sulfur-containing compounds and carbon-containing compounds, as well as smaller detection errors.