A national-scale high-resolution CCUS-shared pipeline layout for retrofitting multisectoral plants via onshore-offshore geological storage

Kai Li; Yifan Mao; Jing-Li Fan; Jizhe Li; Xiangqian Li; Jiayu Li; Xiaojuan Xiang; Changwan Gu; Xian Zhang

doi:10.1016/j.isci.2024.110978

A national-scale high-resolution CCUS-shared pipeline layout for retrofitting multisectoral plants via onshore-offshore geological storage

iScience. 2024 Sep 16;27(10):110978. doi: 10.1016/j.isci.2024.110978. eCollection 2024 Oct 18.

Authors

Kai Li^{1

2}, Yifan Mao^{1

2}, Jing-Li Fan^{1

2}, Jizhe Li³, Xiangqian Li⁴, Jiayu Li^{1

2}, Xiaojuan Xiang^{1

2}, Changwan Gu^{1

2}, Xian Zhang⁵

Affiliations

¹ Centre for Sustainable Development and Energy Policy Research, School of Energy and Mining Engineering, China University of Mining & Technology, Beijing 100083, China.
² State Key Laboratory of Coal Resources and Safe Mining (China University of Mining and Technology), Beijing 100083, China.
³ Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing 100084, China.
⁴ School of Statistics, Capital University of Economics and Business, Beijing 100070, China.
⁵ The Administrative Centre for China's Agenda 21, Ministry of Science and Technology, Beijing 100038, China.

Abstract

Carbon capture utilization and storage (CCUS) is an indispensable process to mitigate climate change. However, a precise and feasible CCUS layout with realistic geospatial connectivity is essential to support the prospective deployment of multisectoral plants on a national scale. This study proposed an onshore-offshore CCUS source-sink matching model, distinguished by CO₂ source-sink dataset enhancement, realistic pipeline network optimization, and onshore-offshore geospatial connectivity to accurately map China's high-resolution CCUS layout. The findings showed that China's multisectoral CCUS supply potential of coal-fired power, steel, cement, and coal chemicals was approximately 1.75, 0.77, 0.56, and 0.23 Gt/a CO₂, respectively. A complete geospatial connectivity pattern was established by connecting 1186 multisectoral CO₂ sources with 307 onshore and 22 offshore storage sites via the shared pipeline network of 80,700 km, involving plant-level cost heterogeneity, industry competition, and CCUS cluster identification. This model can be applied to other countries or globally to enhance CCUS layout strategies.

Keywords: Earth sciences; Environmental engineering; Geology; Global carbon cycle.