Mixing and liquid-vapor equilibrium of dilbit-water-sand/clay slurries in the syncrude naphtha recovery unit

合成石脑油回收装置中稀释沥青-水-砂/粘土浆液的混合和液汽平衡

• 批准号: 515085-2017
• 负责人: DeLasa, Hugo
• 金额: $ 6.08万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618259
• 关键词: Mixing; liquid; vapor; equilibrium; dilbit

The goal of the present study is to develop a new thermodynamic model for the simulation of the saturationvapour pressure in Dilbit-water-sand/clay slurries, in proportions relevant to the NRU (Naphtha Recovery Unit)and using actual Syncrude NRU Feed samples. Experiments will be developed using a Recat LV Cell, whichhas been tested and implemented by Prof. de Lasa's team at the CREC(Chemical Reactor Engineering Centre)-UWO (University of Western Ontario) laboratories. The Recat LV Cell allows the quantification of the vapourpressure, as well as the identification of adequate mixing slurry conditions. In this respect, the proposed newresearch under combined NSERC CRD and Syncrude Canada sponsorship will involve enhancing the RecatLV Cell further. The patented CREC Optiprobes will be used for gas phase sampling as well as onlinemeasurement of droplets and particle sizes. It is anticipated that the use of this strategy will provide criticaldata for the identification of best mixing conditions and power input, for highly dispersedDilbit-water-sand/clay slurry phases and NRU feeds. Furthermore, a Computational Fluid Dynamic (CFD)model will be developed for this test cell. The proposed CFD model will be validated using data from the RecatLV Cell. This model will also use relevant fluid dynamic parameters for CFD simulation such as viscosity,surface tension and sand agglomerate sizes. This CFD model will provide a description of mixing patterns inthe Recat LV Cell and the best conditions required for achieving liquid-vapour equilibrium. These identifiedmixing conditions, as well of liquid-vapour thermodynamics will provide Syncrude valuable engineeringinformation for the efficient processing of their Froth Treatment tailings and fine tune their operation forminimizing solvent loss.

本研究的目标是开发一种新的热力学模型，用于模拟 Dilbit-水-砂/粘土浆料中的饱和蒸汽压，其比例与 NRU（石脑油回收装置）相关，并使用实际的 Syncrude NRU 进料样品。实验将使用 Recat LV Cell 进行开发，该电池已由 de Lasa 教授的团队在 CREC（化学反应器工程中心）-UWO（西安大略大学）实验室进行了测试和实施。 Recat LV Cell 可以量化蒸气压，以及识别适当的混合浆料条件。在这方面，在 NSERC CRD 和 Syncrude Canada 联合赞助下拟议的新研究将涉及进一步增强 RecatLV Cell。获得专利的 CREC Optiprobes 将用于气相采样以及液滴和颗粒尺寸的在线测量。预计该策略的使用将为高度分散的稀释沥青-水-砂/粘土浆相和 NRU 进料的最佳混合条件和功率输入的识别提供关键数据。此外，还将为此测试单元开发计算流体动力学（CFD）模型。拟议的 CFD 模型将使用 RecatLV Cell 的数据进行验证。该模型还将使用相关流体动力学参数进行 CFD 模拟，例如粘度、表面张力和砂团粒尺寸。该 CFD 模型将描述 Recat LV Cell 中的混合模式以及实现液汽平衡所需的最佳条件。这些确定的混合条件以及液-气热力学将为 Syncrude 提供有价值的工程信息，以便有效处理其泡沫处理尾矿并微调其操作以最大限度地减少溶剂损失。