Finite-volume method for industrial-scale temperature-swing adsorption simulations
Journal article, 2020

We formulate a mathematical model for temperature-swing adsorption systems. A finite-volume method is derived for the numerical solution of the model equations. We specifically investigate the influence of the choice of spatial discretization scheme for the convective terms on the accuracy, convergence rate and general computational performance of the proposed method. The analysis is performed with the nonlinear Dubinin-Radushkevich isotherm representing benzene adsorption onto activated carbon, relevant for gas cleaning in biomass gasification.

The large differences in accuracy and convergence between lower- and higher-order schemes for pure scalar advection are significantly reduced when using a non-linear isotherm. However, some of these differences re-emerge when simulating adsorption/desorption cycling. We show that the proposed model can be applied to industrial-scale systems at moderate spatial resolution and at an acceptable computational cost, provided that higher-order discretization is employed for the convective terms.

Discretization

Verification

Finite volume

Dispersion

Adsorption

Cyclic steady state

Author

Adam Jareteg

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Dario Maggiolo

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Srdjan Sasic

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Henrik Ström

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Chalmers, Space, Earth and Environment, Energy Technology

Computers and Chemical Engineering

0098-1354 (ISSN)

Vol. 138 106852

Optimization and increased energy efficiency in indirect gasification gas cleaning

Swedish Energy Agency, 2016-03-08 -- 2019-12-31.

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Chemical Process Engineering

Chemical Engineering

Fluid Mechanics and Acoustics

Areas of Advance

Energy

Roots

Basic sciences

DOI

10.1016/j.compchemeng.2020.106852

More information

Latest update

8/19/2020