关键词: 热化学储热, 钙循环, 改性方法, 钙基热载体, 反应器设计

Abstract: This article reviews the research progress on the cyclic modification and strengthening of thermochemical thermal storage calcium. Firstly, the physicochemical properties of calcium based heat carriers were introduced, including their main types, physical and chemical characteristics. Then, a detailed review was conducted on the modification methods of calcium based heat carriers, including physical modification (such as particle size control and carrier addition) and chemical modification (such as doping metal oxides and surface coatings). Subsequently, the types and designs of calcium cycling thermal storage reactors and systems were discussed, including fixed bed reactors, fluidized bed reactors, and other reactors. Finally, the conclusions and prospects of calcium cycling thermochemical thermal storage technology were summarized, pointing out its potential in solving the intermittency problem of renewable energy and coupling CO₂ capture, while also facing challenges such as deactivation, wear, and system efficiency.

Key words: Thermochemical thermal storage, Calcium cycle, Modification method, Calcium based heat carrier, Reactor design