Comparison of structural models for high-ash char gasification

G.Q.Lu G.Q.LuG.Q.Lu G.LuG. Q.https://api.elsevier.com/content/author/author_id/7403460602 (1994) Comparison of structural models for high-ash char gasification. Carbon, 32 2: 247-263. doi:10.1016/0008-6223(94)90188-0


Author G.Q.Lu G.Q.LuG.Q.Lu G.LuG. Q.https://api.elsevier.com/content/author/author_id/7403460602
Title Comparison of structural models for high-ash char gasification
Journal name Carbon   Check publisher's open access policy
ISSN 0008-6223
Publication date 1994-01-01
Year available 1994
Sub-type Article (original research)
DOI 10.1016/0008-6223(94)90188-0
Open Access Status Not yet assessed
Volume 32
Issue 2
Start page 247
End page 263
Total pages 17
Place of publication OXFORD
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Language eng
Subject 1600 Chemistry
Abstract Structural models for the gasification of high-ash char are developed from different approaches to the depiction of the char pore structure. The description of the pore structure of a high-ash char particle is based on the structural characteristics of high-ash containing coal reject char. A finite overlapping grain model (FOG), modified random pore model (MRP) and a model based on the percolation theory on Bethe lattice (PBL) are formulated. These models take into account the effect of ash content by considering it as an inactive inclusion. Comparisons of these models are present based on the parametric simulation results. It has been shown that both the MRP and PBL models can predict similar behavior of high-ash char gasification. The effect of ash content on the surface area and reaction rate evolution is shown to be significant. The percolation model has an advantage in that it can describe the closed pore evolution and predict particle fragmentation.
Keyword gas-solid reaction
High-ash char
pore structural models
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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