Year: 2026
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide It is found that due to a simplification in the metaplast model, the original chemical percolation devolatilization (CPD) model does not ensure mass conservation. This is caused by the fact that evacuation of tar is only approximately accounted for in the underlying formulas derived from percolation theory. In this paper, a new version of the metaplast model is developed and implemented in a Julia-based solver. This correction also results in some corrections to the kinetic data for lignin, cellulose, and hemicellulose. The new Julia solver includes two versions, one for small particles where no spatial resolution is required and a spatially resolved version. The spatially resolved version is used to find that, even for pyrolyzing particles, a Biot number of unity is a sufficient criterion to determine when spatial models must be used.
Source: Energy & Fuels
Authors: Odd Andersen, Nils Erland L. Haugen
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
OpenAlex ID: W7128431066