关键词: 全能源系统, 煤层气, 煤炭地下气化, 煤制氢, CCUS, 多能融合, 煤基新材料

Abstract: Under the strategic guidance of "energy powerhouse" and "dual carbon goals",coal is transitioning from a fuel-centric system to a Whole Coal Energy System encompassing the synergistic properties of fuel,feedstock,and material. Grounded in the concept of "Integrated Whole-Energy System" combined with China’s coal-abundant resource endowment,this paper clarifies the connotation and strategic value of the Whole Coal Energy System. The results indicate that the Whole Coal Energy System consists of three major subsystems:coal-based primary energy,coal-derived energy,and coal-based new energy. Coal-based primary energy,derived from coal-bearing strata and associated layers and with coal and multi-layered coalbed methane as its core,serves functions of energy supply and security. Coal-derived energy is a secondary energy produced from coal (including both in-situ and above-ground conversion),advancing the transformation of fossil fuels to chemical energy carriers. Coal-based new energy refers to a functional material system that utilizes coal as a carbon/hydrogen source to form novel energy forms or energy carriers involved in energy storage,conversion,or transmission. The integrated advancement of three subsystems,combined with multi-energy integration including oil,gas,new energy sources,and other forms of energy,establishes a novel energy system that ensures energy security,environmental protection,and industrial upgrading. The formation and evolution of the Whole Coal Energy System represents a continuous process from deep-time carbon sequestration,modern conversion to future reengineering,embodying the coupling of the Earth’s carbon cycle and the engineered energy cycle. The realization and development of the Whole Coal Energy System should be grounded in coal-bearing primary energy,guided by the direction of new energy,balanced through energy storage,and empowered by new materials. This approach aims to promote low-carbon intelligence,systematic synergy,and continuous transformation,ultimately constructing a safe,efficient,intelligent,and low-carbon multi-energy synergy framework. It will provide strategic support for optimizing China’s energy structure and advancing the construction of an energy powerhouse.

Key words: Integrated Whole-Energy System, coalbed methane, underground coal gasification, coal-based hydrogen production, CCUS, multi-energy integration, coal-based new materials