Negative carbon emission technology is an innovative approach aligned with net-zero goals,aimed at reducing atmospheric CO2 concentrations,and is a crucial component of China's carbon-neutral technology system.Negative carbon emission solutions constitute a multifaceted and complex system,among which Direct Air Carbon Capture and Storage(DACCS)and Bioenergy with Carbon Capture and Storage(BECCS)are key technologies closely integrated with geological storage to achieve permanent emission reductions.Both of these technologies rely on mature geological storage techniques to securely sequester captured CO2 underground,preventing its re-entry into the atmosphere and ensuring permanent reductions.This paper details the latest research progress and application status of the rapidly developing DACCS and BECCS technologies.Regarding DACCS,it primarily introduces the two major technologies in DAC—liquid absorption and solid adsorption—focusing on key materials and process technologies.It also analyzes the current application and economic feasibility of DAC technology,summarizes major operational and planned DAC demonstration projects both domestically and internationally,and forecasts the key research directions for DAC in the future,as well as the feasibility of large-scale DAC deployment.In terms of BECCS,the paper outlines the main components of the BECCS technology chain and its basic process flow.It emphasizes the development status of various BECCS technology pathways,including biomass thermochemical conversion and biomass biochemical conversion technologies closely related to fuel products,as well as biomass combustion technology commonly used for power generation.The paper explores the feasibility of deploying BECCS in different biomass energy utilization scenarios,summarizes the current application status of BECCS technology,and lists major BECCS demonstration projects both domestically and abroad.Additionally,it analyzes the economic viability of the technology in connection with the production of green methanol.Based on the actual situation of China's biomass resources,the paper also provides an outlook on the future development of BECCS technology.
negative carbon technologiesdirect air capturebio-energy with carbon capture and storageCCUS
维普
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