Recently, the Technical Appraisal Meeting for the project Key Technology and Application of Coal-Fired Power CO2 Mineralization with Multi-Solid Waste to Produce Green Building Materials, jointly developed by CHN Energy Jinjie Company, National Institute of Clean-and-Low-Carbon Energy, and Zhejiang University, was held in Beijing. The Chinese Society for Electrical Engineering rated the project as internationally leading level, with strong prospects for wide application.
After reviewing technical documents, listening to project presentation, and holding detailed discussions and inquiries, the Appraisal Committee unanimously agreed that the project had successfully addressed common industry challenges, with high technological maturity, remarkable results in application demonstrations, significant technological innovation and industrial application value.
Leveraging the 150,000-tonne/year carbon capture facility at CHN Energy Jinjie Company, the project has established China's first 10,000-tonne-scale demonstration project for coal-fired power CO2 mineralization using multi-solid waste to produce green building materials. With a carbon fixation capacity of 20,000 tonnes/year, the facility achieves a CO2 conversion and utilization rate of over 98%, 100% substitution of cementitious materials with solid waste, and a heavy metal leaching inhibition rate of over 90%. The project has developed an integrated process route for CO2 mineralization and blocks moulding using fly ash, covering capture, pipeline transport, gas distribution, and maintenance. The resulting lightweight concrete products meet the national standard MU15, demonstrating the high-value and efficient utilization of coal-based solid waste and wastewater, as well as the permanent storage of CO2.
Currently, the project's research outcomes have been commercialized. The carbon-sequestered green building material products have been applied in several key projects in Xi'an, Shanghai, and Hangzhou, providing solutions for the large-scale resource utilization of industrial solid waste and underpinning the green and low-carbon transition of China's energy industry.
