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首页> 外文会议>Energy technology 2018: Carbon dioxide management and other technologies >Thermal Separation and Leaching of Valuable Elements from Waste-Derived Ashes
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Thermal Separation and Leaching of Valuable Elements from Waste-Derived Ashes

机译：废物灰烬中热元素的分离和珍贵元素的浸出

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摘要

Recovery of trace elements from different industrial waste streams is important in realizing the goals of the circular economy. Ash streams from waste combustion can contain high levels of both toxic and valuable trace elements. These elements can be separated during the combustion process based on volatilization and condensation, as well as being separated in post-combustion processes, through thermal or leaching treatment. In this study, an overview is given of the thermal methods for recovery of valuable elements from ash fractions derived from waste incineration. In addition, a case study is presented of the behaviour of ash-forming elements in combustion of MSW and demolition wood, with special focus on the elements Co, Cu, and Sb. In conclusion, it is shown that thermodynamic modeling of high temperature processes can be a useful tool to predict ash behavior both during combustion and in the post combustion treatment of the ash.
机译：从不同的工业废物流中回收微量元素对于实现循环经济的目标很重要。废物燃烧产生的灰烬流可能含有大量的有毒和有价值的微量元素。这些元素可以在燃烧过程中基于挥发和冷凝而分离，也可以在后燃烧过程中通过热处理或浸出处理分离。在这项研究中，概述了从废物焚烧产生的灰分中回收有价值元素的热方法。此外，还对灰分形成元素在城市固体废弃物和拆除木材燃烧中的行为进行了案例研究，重点研究了元素Co，Cu和Sb。总之，研究表明，高温过程的热力学模型可以作为预测灰烬燃烧过程中和燃烧后处理过程中灰烬行为的有用工具。

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