Mathematical modeling of thermal decomposition of coal

Date

2004-06-01

Author

Guruz, GA
Uctepe, U
Durusoy, T

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

166
views

0
downloads

Pyrolysis, as a first step in all thermochemical coal conversion processes, has been investigated in detail over the years in order to evaluate the kinetic data and to establish reliable models for the complex reaction scheme. Since coal pyrolysis is not a single reaction but rather a multiplicity in different time intervals for isothermal pyrolysis, or in different time and temperature intervals for the case of heat-up, any set of parameters cannot be expected to represent data accurately over a wide range of conditions.

Subject Keywords

General Chemistry, General Chemical Engineering

URI

https://hdl.handle.net/11511/66339

Journal

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

DOI

https://doi.org/10.1016/j.jaap.2003.08.007

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Kinetic analysis of DSC and thermogravimetric data on combustion of lignite Kök, Mustafa Verşan (Springer Science and Business Media LLC, 1996-06-01) Thermal analysis increasingly being used to obtain kinetic data relating to sample decomposition. This work involves a comparative study of several methods used to analyse DSC and TG/DTG data obtained on the oxidation of Beypazari lignite. A general computer program was developed and the methods are compared with regard to their accuracy and the ease of interpretation of the kinetics of thermal decomposition. For this study, the ratio method was regarded as the preferred method, because it permits the estim...
Calculation of Detonation Properties of Gaseous Explosives Using Generalized Reduced Gradient Nonlinear Optimization Ulaş, Abdullah (Wiley, 2011-08-01) In this paper, a study on the development of a numerical modeling of the detonation of C-H-N-O-based gaseous explosives is presented. In accordance with the numerical model, a FORTRAN computer code named GasPX has been developed to compute both the detonation point and the detonation properties on the basis of Chapman-Jouguet (C-J) theory. The determination of the detonation properties in GasPX is performed in chemical equilibrium and steady-state conditions. GasPX has two improvements over other thermodyna...
EVALUATION OF SECOND VIRIAL COEFFICIENTS FROM SATURATION DATA Orbey, H.; Orbey, N. (Informa UK Limited, 1989-3) A data reduction technique is introduced for the evaluation of second virial coefficients of gases at subcritical temperatures. The method makes use of the vapor-liquid equilibrium data, i.e., temperature, saturation pressure, liquid and vapor molar volumes and can be used to obtain second virial coefficients of a wide variety of fluids including polar, associating and quantum gases. The calculated second virial coefficients are in good agreement with their counterparts from literature, which are obtained f...
Comparison of Fenitrothion and Trifluralin Adsorption on Organo-Zeolites and Activated Carbon. Part II: Thermodynamic Parameters and the Suitability of the Kinetic Models of Pesticide Adsorption LÜLE ŞENÖZ, Güzide Meltem; Atalay, Mustafa Ümit (Informa UK Limited, 2014-07-04) The suitability of two kinetic models and the thermodynamic parameters of pesticide adsorption were investigated based on obtained data of previous studies. Kinetic evaluation indicated that the pesticides adsorption on adsorbents followed the pseudo-second-order model. Gibbs free energy (Delta G degrees), enthalpy (Delta H degrees), and entropy (Delta S degrees) were calculated for thermodynamic parameters by using linearized Arrhenius equation. The results indicated that the sorption process of fenitrothi...
Thermal behaviour of some metal complexes of N,N-diethyl-N'-benzoyl thiourea Merdivan, M; Aygün, Rüveyde Sezer; Kulcu, N (Springer Science and Business Media LLC, 1997-06-01) The thermal behaviour of the complexes of N,N-diethyl-N'-benzoylthiourea (DEBT) with NI(II), Cu(II), Pt(II), Pd(II) and Ru(III) was studied using differential thermal analysis (DTA) and thermogravimetry (TG). These complexes undergo only a pyrolytic decomposition process. A gas chromatography-mass spectrometry combined system was used for the verification of the first decomposition product and X-ray diffraction method for the characterization of the final products of pyrolysis.

Citation Formats

G. Guruz, U. Uctepe, and T. Durusoy, “Mathematical modeling of thermal decomposition of coal,” JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, pp. 537–551, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66339.