Modeling and Simulation of N-Butane Adsorption/Desorption in a Carbon Canister

Abstract

As a part of developing automotive fuel vapor emission control, a two dimensional, time-accurate simulation capability for adsorption/desorption in a carbon canister has been developed. Dubinin-Polanyi adsorption potential model has been used for n-butane (a surrogate for gasoline vapor) adsorption at ambient pressure on activated carbon adsorbent of Westvaco product BAX 950, and nitrogen was chosen as the carrier gas. Linear driving force model is used for heat and mass transfer rates. The impacts of different n-butane concentration on the adsorption phenomena and different initial carbon bed equilibrium adsorption states on desorption phenomena are studied. Results such as adsorption breakthrough curve, desorption curve, adsorption amount, n-butane mole fraction and temperature profiles are provided. Comparisons with results from previous work are made to verify the current model.

Meeting Name

SAE 2004 World Event Congress & Exposition

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Simulation and Modeling; Mathematical Models; Emissions Control; Spark Ignition Engines

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Society of Automotive Engineers, All rights reserved.

Publication Date

01 Jan 2004

Link to Full Text

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