二氧化碳低温凝华捕集的实验研究

摘要

针对现有CO2低温凝华数据不足,低温凝华法碳捕集实验缺乏以及对气固分离的换热器研究很少的现状,采用可视化方法进行低温凝华法碳捕集的实验研究,对于不同初始浓度和流量下N2/CO2二元系中CO2在换热器中的温度分布及其凝华晶体生长形态进行了实验,获得了不同的CO2凝华状态信息.%Carbon capture and storage receives extensive concern in the background of global warming.Because of the huge costs and complex processes of traditional carbon capture technology in industrial applications,a novel carbon capture technology by cryogenic desublimation,which can be used for industrial cold recovery,has been studied in this article.Since the existing cryogenic carbon dioxide desublimation data is insufficient,a low temperature visualized experiment platform was setup to test and record temperature distributions and crystalline morphology in the heat exchanger for N2/CO2 binary system in different concentrations and flow rates.And different carbon dioxide desublimation states are recorded.