Abstract The application of an ethanol pre-treatment step on biomass-templated calcium looping sorbents resulting in an improved pore structure for cyclic CO2 capture was investigated. Three ethanol solutions of varying concentrations were used with an improved pore and particle structure, and thermogravimetric analyser CO2 carrying capacity arising with the 70 vol% ethanol solution. The extent of attrition of these sorbents was tested within a fluidised bed reactor and compared against an untreated sorbent and a limestone base case. It found that despite the ethanol-treated sorbents displaying an admirable CO2 carrying capacity within the thermogravimetric analyser even under realistic post-combustion conditions, this was not translated equivalently in the fluidised bed. Attrition and elutriation of the biomass-templated sorbents was a significant issue and the ethanol pre-treatment step appeared to worsen the situation due to the roughened surface and mechanically weaker structure.

中文翻译：

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流化床反应器中用于捕获 CO 2 的乙醇处理 CaO 吸附剂的吸附剂磨损和降解程度

摘要 研究了乙醇预处理步骤在生物质模板钙循环吸附剂上的应用，从而改善了用于循环 CO2 捕获的孔结构。使用了三种不同浓度的乙醇溶液，改进了孔和颗粒结构，热重分析仪的 CO2 承载能力随着 70 vol% 乙醇溶液的增加而增加。这些吸附剂的磨损程度在流化床反应器中进行测试，并与未处理的吸附剂和石灰石基础情况进行比较。结果发现，尽管乙醇处理的吸附剂在热重分析仪中显示出令人赞叹的 CO2 承载能力，即使在真实的燃烧后条件下，这在流化床中并没有得到等效转化。