Reporters learned from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences that a research team at the institute has recently made new breakthroughs in clean hydrogen sulfide treatment technology. Technical verification was completed today (the 6th), offering a new solution for the green transformation of the chemical industry.

Hydrogen sulfide is a highly toxic compound generated as an associated or by‑product in natural‑gas extraction, oil refining and coal‑chemical processes. Complete elimination and resource‑oriented utilization of hydrogen sulfide has long posed a major challenge for the chemical sector. After more than 20 years of research, Chinese scientists have explored unconventional approaches such as photo‑ and electro‑driven hydrogen sulfide decomposition. They have successfully resolved engineering‑scale‑up obstacles for large‑scale hydrogen sulfide decomposition and developed proprietary‑intellectual‑property‑based technologies independently developed in China.

The technology has been deployed in an industrial demonstration project within the coal‑chemical industry for the elimination and resource utilization of 100 000 cubic meters of hydrogen sulfide per year. Operational data show that hydrogen sulfide conversion reaches nearly 100 %, yielding high‑purity sulfur and high‑purity hydrogen.

This technology delivers an innovative pathway for thorough elimination and resource recycling of hydrogen sulfide. It maximizes clean disposal of pollutants including hydrogen sulfide while generating dual resource benefits from hydrogen‑ and sulfur‑production. It expands production routes for clean low‑carbon hydrogen in industrial settings and plays a positive role in advancing China’s hydrogen‑energy industry and low‑carbon‑energy‑system development.