解锁“地下宝藏”，破解氢能储存“卡脖子”难题

Core Insights - The "Large-Scale Salt Cavern Hydrogen Storage" project marks a significant step in China's hydrogen storage capabilities, initiated by China Salt Group and Tsinghua University in Changzhou [1][3][4] - The project aims to develop a complete technology system for salt cavern hydrogen storage, enhancing the hydrogen energy industry's safety, integrity, and autonomy [2][3][9] Project Overview - The project is part of a national key research and development plan, involving multiple institutions including China University of Geosciences and the Chinese Academy of Sciences [2] - Salt caverns are man-made underground cavities formed by dissolving rock salt, providing ideal conditions for storing gases like hydrogen due to their excellent sealing and stability [2][3] Technical Aspects - The project will create two new salt caverns with hydrogen injection and extraction wells, focusing on testing hydrogen storage performance [4] - Salt cavern hydrogen storage is considered the best method for large-scale underground hydrogen storage, with individual caverns capable of storing between 200,000 to 400,000 cubic meters of hydrogen [3][4] Regional Advantages - Jiangsu province, particularly Changzhou, has a rich history in salt cavern utilization, making it an ideal location for this project due to its abundant salt resources and established infrastructure [4][5][6] - The salt layer in Changzhou is thick and of high quality, providing a stable environment for hydrogen storage [5][6] Safety Measures - The project incorporates a unique constant pressure storage method to mitigate risks associated with hydrogen's flammability and explosiveness, ensuring safe storage conditions [7][8] - A multi-dimensional safety defense system is being established throughout the project's design, construction, and operational phases [7] Future Implications - As technology advances, salt cavern hydrogen storage is expected to lower storage costs and facilitate the expansion of hydrogen energy systems across China [8] - The project aims to create a comprehensive technology standard for hydrogen storage, providing a model for other regions in the country [9]