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首页> 外文期刊>The Canadian Journal of Chemical Engineering >CHARACTERISING RAG-FORMING SOLIDS
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CHARACTERISING RAG-FORMING SOLIDS

机译：表征碎屑形成固体

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摘要

In oil sands froth treatment, an undesirable intermediate layer, often accumulates during the separation of water-oil emulsions. The layer referred to as rag layer is a complex mixture of water, oil, solids and interfacially active components. The presence of a rag layer has a detrimental impact on the separation of water and fine solids from diluted bitumen. The current study focuses on characterisation of solids from a rag layerforming stream of a naphthenic froth treatment plant in an attempt to understand the mechanism of rag layer formation. Through detailed characterisation of rag-forming and non-rag-forming solids, the mineralogy of solids and their contamination were shown to be critical to rag layer formation. The iron-based minerals such as siderite and pyrite were found to be enriched within the rag layer. Analysis of surface organic complexes confirms a high level of organic matter associated with these solids through the binding of carboxylic acid group with iron on solids, resulting in a surface hydrophobicity susceptible for rag layer formation.
机译：在油砂泡沫处理中，不希望有的中间层通常在水油乳液的分离过程中积聚。称为抹布层是水，油，固体和界面活性成分的复杂混合物。抹布层的存在对从稀释的沥青中分离出水和细固体有不利影响。当前的研究集中于对环烷泡沫处理厂的形成碎屑层的流中的固体进行表征，以试图了解碎屑层形成的机理。通过详细描述形成碎屑的和非形成碎屑的固体，固体的矿物学及其污染被证明对形成碎屑层至关重要。发现铁基矿物（如菱铁矿和黄铁矿）在碎布层中富集。对表面有机配合物的分析证实了通过羧酸基团与固体上铁的键合，与这些固体相关的有机物含量很高，导致表面疏水性易于形成抹布层。

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