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Mitigation Of Fluid Coker Cyclone Fouling With Consideration To Reactor Performance, Andrew J. Heaslip
Mitigation Of Fluid Coker Cyclone Fouling With Consideration To Reactor Performance, Andrew J. Heaslip
Electronic Thesis and Dissertation Repository
Fluid Coking is a continuous process to thermally upgrade heavy hydrocarbons into lighter, higher-value products. Fouling of the cyclones in commercial Fluid Coker reactors significantly reduces unit runtimes. The main objective of this thesis is to improve unit reliability by identifying process levers that can mitigate against this phenomenon while minimizing reductions in product quality. This thesis expanded a previous freeboard region model to consider vapour phase cracking and adsorption and developed a novel reactor region model to consider the impact of liquid and vapour phase cracking, vapour-liquid equilibrium, and residence time distribution on product composition. By changing the temperature …
Modeling Fluid Coker Cyclone Fouling, Erica Glatt
Modeling Fluid Coker Cyclone Fouling, Erica Glatt
Electronic Thesis and Dissertation Repository
Fluid CokingTM is a continuous process that thermally converts heavy hydrocarbons, such as oil-sands bitumen, to lighter and higher-value products by horizontal injection onto a fluidized bed of hot coke particles. The deposition of carbonaceous materials in the cyclone sections of commercial Fluid Cokers has been observed throughout each run. The main objective of this work is to improve unit reliability by proposing cyclone fouling mitigation strategies based on a localized phenomenological model using Aspen Plus®. The heavy ends condensation fouling mechanism was studied by incorporating vapour-liquid thermodynamics, thermal cracking reactions, and overall fluid dynamics in the Fluid Coker. …