有毒气体变宝藏

Core Viewpoint - The research team led by Academician Li Can from the Dalian Institute of Chemical Physics has developed a proprietary technology for the complete decomposition of hydrogen sulfide into hydrogen and sulfur, transforming a hazardous waste into valuable resources, achieving international leading standards in this field [1][4]. Group 1: Technology Overview - Hydrogen sulfide (H2S) is a toxic compound commonly produced in natural gas extraction, refining, and coal chemical processes, posing significant environmental and health risks [2]. - The traditional Claus process converts hydrogen sulfide into sulfur and water, which is seen as inefficient since it wastes the hydrogen component [2]. - The newly developed electrocatalytic technology allows for the separate recovery of both sulfur and hydrogen, effectively addressing the limitations of the Claus process [3]. Group 2: Implementation and Results - A pilot demonstration unit capable of processing 100,000 cubic meters of hydrogen sulfide annually has been established, achieving over 1,000 hours of stable operation with over 99.95% purity for sulfur and over 99.999% purity for hydrogen [4]. - This technology operates under mild conditions (room temperature and atmospheric pressure) without emitting carbon dioxide, making it suitable for various industries such as coal chemical, petrochemical, and oil and gas extraction [4]. Group 3: Economic and Environmental Impact - The International Hydrogen Association predicts that by 2030, China's green hydrogen production capacity will reach approximately 1.8 million tons, with the new technology potentially recovering about 730,000 tons of green hydrogen from the annual processing of 8 billion cubic meters of hydrogen sulfide, contributing significantly to carbon neutrality goals [5]. - The electrocatalytic technology's operational costs for hydrogen production are expected to be half that of current water electrolysis methods, with further cost reductions anticipated as the technology matures, benefiting the hydrogen energy industry and low-carbon energy systems [5].