Determination of the effects caused by different polymers on coal fluidity during carbonisation using high-temperature 1H NMR and rheometry

Casto Diaz, Miguel, Edeki, Lucky, Steel, Karen M., Patrick, John W. and Snape, Colin E. (2008) Determination of the effects caused by different polymers on coal fluidity during carbonisation using high-temperature 1H NMR and rheometry. Energy & Fuels, 22 1: 471-479. doi:10.1021/ef7004628


Author Casto Diaz, Miguel
Edeki, Lucky
Steel, Karen M.
Patrick, John W.
Snape, Colin E.
Title Determination of the effects caused by different polymers on coal fluidity during carbonisation using high-temperature 1H NMR and rheometry
Journal name Energy & Fuels   Check publisher's open access policy
ISSN 0887-0624
Publication date 2008-01
Sub-type Article (original research)
DOI 10.1021/ef7004628
Volume 22
Issue 1
Start page 471
End page 479
Total pages 9
Publisher American Chemical Society
Language eng
Subject 03 Chemical Sciences
0904 Chemical Engineering
Abstract The effects of blending polyethylene (PE), polystyrene (PS), poly(ethyleneterephthalate) (PET), a flexible polyurethane (FPU), and a car shredded fluff waste (CSF) on fluidity development of a bituminous coal during carbonization have been studied by means of high-torque, small-amplitude controlled-strain rheometry and in situ high-temperature H-1 NMR spectroscopy. The most detrimental effects were caused by PET and PS, which completely destroyed the fluidity of the coal. The CSF had a deleterious effect on coal fluidity similar to that of PET, although the deleterious effect on the viscoelastic properties of the coal were less pronounced than those of PET and PS. On the contrary, the addition of 10 wt % PE caused a slight reduction in the concentration of fluid hydrogen and an increase in the minimum complex viscosity, and the addition of 10 wt % FPU reduced the concentration of fluid hydrogen without changing the viscoelastic properties of the coal. Although these results suggest that these two plastics could potentially be used as additives in coking blends without compromising coke porosity, it was found that the semicoke strengths were reduced by adding 2 wt % FPU and 5 wt % PE. Therefore, it is unlikely that more than 2 wt % of a plastic waste could be added to a coal blend without deterioration in coke quality.
Keyword in-situ H-1-NMR
Plastic wastes
Polyethylene wastes
Coke production
Pyrolysis
Additives
Blends
Thermoplasticity
Combination
Generation
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 10 Jul 2009, 16:43:23 EST by Dr Karen Steel on behalf of Faculty Of Engineering, Architecture & Info Tech