Carbon dioxide storage system

The invention provides a carbon dioxide storage system. The carbon dioxide storage system comprises a carbon dioxide tail gas capturing part, a carbon dioxide solid-state storage cabin, a gaseous carbon dioxide pipeline, a heat exchanger, an LNG liquid cargo pipeline and a refrigerant circulating pipeline. Heat exchange is carried out through LNG in the LNG liquid cargo storage cabin, so that the carbon dioxide solid-state storage cabin is cooled, storage of carbon dioxide is facilitated, a cold energy source is provided through LNG cargoes, and equipment investment is reduced. Carbon dioxide is stored in a solid state, the carbon dioxide solid-state storage cabin adopts a normal-pressure design, a high-pressure environment is not needed, the cabin structure can be matched with the shape of a ship body structure, the existing space is fully utilized, and the carbon dioxide is stored. 本申请提供一种二氧化碳储存系统，包括二氧化碳尾气捕捉部、二氧化碳固态储存舱、气态二氧化碳管路、换热器、LNG液货管路、冷媒循环管路。通过利用LNG液货储存舱内的LNG进行热交换，以使二氧化碳固态储存舱进行冷却，便于二氧化碳的储存，冷能来源通过LNG货物提