Reaction and mass transfer in model coke agglomerates

流体焦化是油砂沥青改质的重要工艺，液体进料通过与热颗粒接触而加热裂化。将液体喷洒到颗粒床中会形成固体和液体的湿团聚，这些固体和液体会逐渐发生反应并在反应器中分解。这项研究将利用缩比物理模型的居里点加热来研究模型焦炭中的传质和焦炭产率之间的关系。这些实验将确定高液体饱和度下焦炭结块中液膜厚度的作用，沸腾对结块膨胀的作用，以及进料循环在其反应性和焦炭产率中的作用。这些实验将集中在测量焦炭产率和直接观察居里点反应器中的液体和固体行为。该项目将与卡尔斯鲁厄理工学院合作，帮助制造一系列使用居里点合金的物理模型来支持这项研究。

Fluid coking is an important process for upgrading of oilsands bitumen, wherein liquid feed is heated and cracked by contacting it with hot particles. Spraying of liquid into a bed of particles forms wet agglomerates of solid and liquid, which gradually react and break up in the reactor. The proposed research would investigate the relationship between mass transfer and coke yield in model coke agglomerates using Curie-point heating of scaled physical models. These experiments will define the role of liquid film thickness in coke agglomerates at high liquid saturation, the role of boiling in expanding agglomerates, and the role of feed recycle in its reactivity and coke yield. The experiments would focus on measurement of coke yield and direct observation of liquid and solid behaviour in Curie-point reactors. The project will involve collaboration with Karlsruhe Institute of Technology to help fabricate a range of physical models using Curie-point alloy to support the study.