损耗
钙环
吸附剂
煅烧
中试装置
磨损(机械)
矿物学
粒径
钙
材料科学
化学工程
化学
冶金
复合材料
吸附
工程类
物理化学
催化作用
牙科
医学
生物化学
作者
Mónica Alonso,B. Arias,José R. Fernández,Olivier Bughin,J.C. Abanades
标识
DOI:10.1016/j.powtec.2018.06.011
摘要
The attrition of CaO-based solids operating in calcium looping (CaL) post-combustion CO2 capture systems is an important factor to consider when limestones are selected as sorbent precursors. In this work, four commercial natural limestones with similar chemical compositions but with very different mechanical properties were tested in a 30kWth calcium looping pilot plant. The main attrition mechanisms that act upon the limestones (i.e. fragmentation, decrepitation and abrasion) were identified on the basis of the evolution of their particle size distributions during the start-up and the first calcination of each batch. Great differences in the performance of the selected limestones were observed, which confirms the suitability of the experimental procedure employed for sorbent screening purposes in these high-velocity, high-temperature pilot plants. Several attrition indexes reported in the literature were tested to conclude that the Total Particle Generated Index (TPGI) and the Maximum Diameter of Particles Generated (MDPG) indexes are the most useful for quantifying attrition phenomena and rank limestones.
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