绿氢制取与管道掺氢输送技术研究及展望OA

Under the backdrop of global low-carbon energy transition and China's"dual carbon"strategy advancement,green hydrogen has become the ultimate direction for the hydrogen energy industry.The technical characteristics and economic feasibility were systematically reviewed on mainstream green hydrogen production technologies,such as alkaline water electrolysis and proton exchange membrane electrolysis,and cost bottlenecks and cost-reduction pathways for large-scale hydrogen production were analyzed.The technical advantages and core challenges were focused on hydrogen-blended transportation in existing natural gas pipelines,and China's research progress and engineering experience in pipeline hydrogen blending were summarized by drawing on demonstration practices from oilfields like Daqing and Changqing.The findings indicate that green hydrogen production technologies are evolving toward lower costs and higher adaptability.Pipeline hydrogen blending stands as one of the optimal short-term pathways for large-scale,low-cost green hydrogen storage and transportation,yet still faces systemic challenges including hydrogen embrittlement,equipment compatibility,safety management,and standardization gaps.Finally,development recommendations are proposed from four perspectives,basic research,domestic equipment manufacturing,standard system construction,and demonstration project deployment to provide technical references for the industrial development of China's green hydrogen industry and the hydrogenation transformation of natural gas pipelines.