Non-equilibrium alcohol flooding model for immiscible phase remediation: 1. Equation development |
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| Authors: | Stanley Reitsma Bernard H Kueper |
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| Institution: | Department of Civil Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6 |
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| Abstract: | The equations for a compositional model for simulation of a two-phase, three-component system with inter-phase mass transfer are developed. Emphasis is placed on development of inter-phase mass transfer equations for incorporation of rate-limited inter-phase mass transfer. Due to the nature of the three-component systems considered, a single-film model may be inadequate and a two-film model must be utilized. A two-film model accounts for the simultaneous transfer of components in both directions across phase interfaces. The effect of interaction between components on diffusion is considered using a general form of Fick's Law. A Hand Plot representation of ternary phase behavior is chosen since it allows for straightforward calculation of miscibility of bulk phases under conditions of local non-equilibrium. The developed set of equations form the basis for a numerical model to simulate the enhanced removal of non-aqueous phase liquids (NAPLs) from porous media using single-component alcohol floods. |
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| Keywords: | alcohol flooding non-equilibrium multicomponent mass transfer DNAPL compositional model two-phase |
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