Clean Coal Technology

2022, v.28;No.142(06) 35-43

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Potential analysis of coal-biomass co-firing power generation in China based on a spatial analysis method

ZHENG Dingqian;TIAN Shanjun;MA Sining;CHANG Shiyan;Tsinghua University-University of Alberta Joint Research Center for Future Energy and Environment,Tsinghua University;School of Information Science and Engineering,Shandong Normal University;Institute of Energy,Environment and Economy,Tsinghua University;Tsinghua University-China Three Gorges Corporation Joint Research Center for Climate Governance Mechanism and Green Low-carbon Transformation Strategy,Tsinghua University;Tsinghua-Rio Tinto Join

Abstract:

Coal-biomass co-firing power generation(CBCP) can reduce CO_2 emissions and alleviate air pollution. Considering the low energy density of straw resources, the application potential of coal-fired coupled biomass power generation technology largely depends on the spatial matching between coal-fired power plants and straw resources. Therefore, from the perspective of spatial analysis, it is of great significance to study the potential of coal-fired coupled biomass power generation. The possible potential of coal-fired coupled power generation was evaluated by spatial matching method based on high-resolution coal-fired power plants and straw resource data. The research results show that coal-fired power plants are highly spatial matched with straw resources in China, with about 89% of the collectible straw located within a 100 km radius of coal-fired power plants. The amount of co-fired straw in coal-fired power plants is affected by the energy utilization ratio of straw and the co-firing level of straw in power plants. The higher the energy utilization of straw is and the higher the co-firing level in power plants is, the more straw is that can be co-firing in coal-fired power plants. Under the scenario of the high energy utilization rate of straw and 30% co-firing level, 1 066 power plants can find straw resources within a radius of 100 km, of which 52.6% of power plants can meet the 30% co-firing level. In this scenario, the power plant can absorb 384 million ton of straw and reduce CO_2 by about 511 million ton. The results can provide technical support for the formulation of technical support policies for coal-biomass co-firing power generation and straw resource utilization policies in China.

Key Words: coal-fired power plant;coal-biomass co-firing;straw;co-firing ratio;transport distance;energy utilization ratio of biomass

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Foundation: 国家自然科学基金资助项目(72140004;71673165)

Authors: ZHENG Dingqian;TIAN Shanjun;MA Sining;CHANG Shiyan;Tsinghua University-University of Alberta Joint Research Center for Future Energy and Environment,Tsinghua University;School of Information Science and Engineering,Shandong Normal University;Institute of Energy,Environment and Economy,Tsinghua University;Tsinghua University-China Three Gorges Corporation Joint Research Center for Climate Governance Mechanism and Green Low-carbon Transformation Strategy,Tsinghua University;Tsinghua-Rio Tinto Join

DOI: 10.13226/j.issn.1006-6772.CC22022801

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