Spatial distribution and source-sink matching of stationary CO₂ emissions in Zhejiang Province

Authors

ZHU Qianlin, Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Xuzhou 221008, ChinaFollow
CHEN Dongbao, Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Xuzhou 221008, China
LIU Hanxiao, Key Laboratory of Coal Fired Flue Gas Purification Equipment Research of Zhejiang Province, Feida Environmental Protection Technology Co., Ltd., Zhuji 311800, China
LU Shijian, Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Xuzhou 221008, China
CHEN Fu, School of Public Administration, Hohai University, Nanjing 211100, China

Abstract

Objective Carbon capture, utilization, and storage (CCUS) is supposed to become an essential technology for the consumption of fossil fuels under the background of achieving carbon neutrality. Delving into the spatial distribution of regional CO₂ stationary sources and the source-sink matching characteristics will contribute to more rational decision-making in CCUS deployment and promote the development of carbon sequestration technology. Methods This study investigated the spatial distribution of CO₂ stationary sources in Zhejiang Province and, using the carbon emission factor method, assessed their CO₂ emissions based on their scales. Furthermore, it analyzed the geological features of both onshore and offshore basins in the province and evaluated the conditions and potential for CO₂ sequestration of possible target basins. The cluster division of CO₂ stationary sources in the province was conducted through cluster analysis. Using the minimal transportation cost as the objective function, the optimal source-sink matching was explored under the assumption that coastal transfer hubs were available for onshore-offshore CO₂ pipeline transportation. [Results and Conclusions] There existed 198 CO₂ stationary sources in Zhejiang Province in 2024, including thermal power plants, steel mills, cement plants, and synthetic ammonia plants, with total annual CO₂ emissions of approximately 297 39.73 × 10⁴ t. Among these, thermal power plants released 82.96% of CO₂ emissions. These sources included 21 CO₂ stationary sources with annual emissions exceeding 500 × 10⁴ t, accounting for 63.87% of the total annual emissions, and 157 sources with annual emissions exceeding 10 × 10⁴ t, totaling about 29512.52 × 10⁴ t per year. In Zhejiang Province, onshore basins are characterized by limited areas and poor conditions for CO₂ sequestration. In contrast, the offshore East China Sea Shelf Basin exhibits favorable sequestration conditions, a high degree of hydrocarbon exploration, and considerable potential for CO₂ sequestration, capable of storing the CO₂ emissions of 196 years in the province. In this offshore basin, the Yangtze, Qiantang, and Oujiang sags, located near coasts, can collectively offer a sequestration capacity of the CO₂ emissions of 54 years in the province. The matched CO₂ sources and sinks show a parallel distribution overall. Under varying distance thresholds for the cluster division of CO₂ sources, shifts in cluster centers or the proximity of CO₂ sources to multiple carbon sinks might cause a CO₂ source to match different carbon sinks. The results of this study will provide a theoretical basis for scientific decision-making and rational planning of CCUS in Zhejiang Province in the future, thereby contributing to the low-carbon utilization of fossil fuels and the achievement of carbon neutrality in the province.

Keywords

CO2 stationary source, sequestration potential, source-sink matching, Zhejiang Province, East China Sea Shelf Basin

DOI

10.12363/issn.1001-1986.25.06.0423

Recommended Citation

ZHU Qianlin, CHEN Dongbao, LIU Hanxiao, et al. (2025) "Spatial distribution and source-sink matching of stationary CO₂ emissions in Zhejiang Province," Coal Geology & Exploration: Vol. 53: Iss. 12, Article 11.
DOI: 10.12363/issn.1001-1986.25.06.0423
Available at: https://cge.researchcommons.org/journal/vol53/iss12/11

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