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New measurement method for fast vapor adsorption on particles
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NSTL
Elsevier
Conventional adsorbents for vapors are designed for high capacity and low-pressure drop, resulting in relatively slow vapor adsorption. Current adsorption measurement methods were, therefore, developed to characterize adsorption on a time scale of minutes. However, faster vapor adsorption is relevant for processes such as FLUID COKINGTM, where fouling within the cyclones can cause a shut-down. Hydrocarbon adsorption on hot coke particles could mitigate cyclone fouling. Therefore, a new measurement method was developed to characterize the fast adsorption of vapors on hot coke particles. It uses a vertically oscillating gas-solid contacting system to provide excellent particle-gas contact, well-mixed conditions, and well-controlled isothermal conditions. Equi-librium adsorption uptake of coke is more than an order of magnitude lower than for activated carbon. However, adsorption is much faster with coke, with an adsorption time constant of about 1 min. Significant adsorption of vapors on coke particles could, therefore, take place in Fluid Cokers.
Adsorption measurementAdsorption kinetics measurementJiggle bed reactorGAS-ADSORPTIONHYDROCARBON VAPORSEQUILIBRIADIFFUSIVITYDESORPTIONCARBON
Briens, Cedric、Toroudi, Erfan Pazoki、Pjontek, Dominic、McKnight, Craig、Wiens, Jason、Wormsbecker, Michael、McMillan, Jennifer
NSTL
Elsevier
