关键词: 碳捕集、利用与封存（CCS/CCUS）, 集群项目, 规模化, 海上CCS/CCUS, 全产业链

Abstract: The global CCS/CCUS industry is still in its early stage of commercialization. Investment in this area has been accelerated in recent years. There is a trend for the CCS/CCUS industry to develop on a large scale and in clusters. It is of great significance for China to promote the full industrial chain demonstration projects of CCS/CCUS clusters, carry out the technological, commercial and policy feasibility study and estimation and accelerate the country’s large-scale technological R&D, demonstration and industrialized application to bring about the carbon peak and carbon neutrality goal. As compared to the “one to one” simple model (CO₂ transported from a capture facility to an injection site), the CCS/CCUS cluster projects will face more complicated carbon discharging sources and call for larger and more reliable places for storage, thus posing a great challenge for capture and purification processing and estimation of the selected zones. The offshore project are limited by a number of factors, such as small space, high investment and difficult maintenance in the later-on period. They are quite different from the onshore projects in technology and schemes for CO2 transportation, storage and monitoring. Currently, development of China’s CCS/CCUS cluster projects faces a series of challenge in the areas of technology, cost, policy, law and commercial model. This paper discusses the key issues concerning promotion of China’s large-scale offshore CCS/CCUS cluster projects and points out that the complexity of carbon discharging sources lead to more difficult carbon capture while selection of the sites hold the key to a large-scale carbon storage. In addition, the projects are ensured by the reliability and economic property of the technological schemes for the full industrial chain with realization of the value chain serving as the original power for execution of the projects.