Reaction and mass transfer in model coke agglomerates

流体焦化是油砂沥青提质的重要工艺，液体进料通过与热颗粒接触而加热裂解。将液体喷洒到颗粒床上，形成固体和液体的湿团块，它们在反应器中逐渐反应和分解。提出的研究将利用缩放物理模型的居里点加热来研究模型焦炭团块的传质与焦炭收率之间的关系。这些实验将确定高液体饱和度下液膜厚度对焦炭结块的作用，沸腾对扩大结块的作用，以及饲料循环对其反应性和焦炭产量的作用。实验将集中在测量焦炭产量和直接观察居里点反应器的液体和固体行为。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.