KINETIC MODELING OF PERCHLOROETHYLENE EXTRACTION DESULFURIZATION OF COALS

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The kinetic modeling of the perchloroethylene reaction-extraction process has been carried out on the basis of batch extraction data. In this paper, modeling results of both second order as well as the pseudo-first order model has been presented. Multiple parameter estimates have been found which minimize the model-data discrepancies. Novel methods have been devised to illustrate multiple estimates of the kinetic parameters. Ill-posedness of the kinetic modeling problem has been analyzed using the expression for extractability and the Hessian matrix of the model-data discrepancy function. Root Mean Square Errors (RMSE) for various types of coals have been evaluated to represent the model-data discrepancy function. It was found that the RMSE was between 2-8% of the estimated initial concentration of extractable organic sulfur, depending upon the type of coal. A novel method, called ''RMSE Contours'' has also been developed to present the sensitivity of parameters to the kinetic models. The second order model has been compared with the simpler pseudo-first order model. It has been successfully demonstrated that the organosulfur extractability of continuous processes can be consistently simulated regardless of the sensitivity of parameters to the model.
Publisher
MARCEL DEKKER INC
Issue Date
1994-02
Language
English
Article Type
Article
Keywords

SULFUR

Citation

FUEL SCIENCE TECHNOLOGY INTERNATIONAL, v.12, no.2, pp.351 - 370

ISSN
0884-3759
URI
http://hdl.handle.net/10203/67236
Appears in Collection
CBE-Journal Papers(저널논문)
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