İsmet MULLİQİ, Avni TERZİQİ, Milaim SADİKU, Blerim BARUTİ, Fisnik OSMANİ, Sadija KADRİU

Performance Devolatilization Model of Lignite during Combustion in PP “Kosova B”

ISSN: 1307-0428
Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 2006
Yayıncı: Selçuk Üniversitesi

In this paper, a mathematical model for the removal of volatiles from lignite grains is presented. Total amount of volatiles in the dry lignite, experimentally determined, is 44.53%.Such high presence of volatiles makes the lignite reach its ignition temperature very quickly. Methodology of this research is based on laboratory research and the designing of the model for devolution, based on famous equations of different authors, and the programs Microsoft Excel and Mathlab. Results of the simulation are generated for grains with varying activation energy. Distribution function is continuous (E) with f(E)dE which represents the fraction of possible released volatiles Wj,lim with activation energy within E and E+dE.

Keywords:

Devolatilization model, lignite, global kinetic, activation energy,

PDF

___

Anthony DB, Howard J, (1976) Rapid Devolatilization and Hydrogasification of Bituminous Coal, AIChE J. 22.

Arenillas A, Rubiera F, Pevida C, Pis JJ, (2001) A comparison of different methods for predicting coal devolatilization kinetics. J. Analytical and Applied Pyrolysis. Shërbimiianalizave- Gjenerimi /Inxhinjering -KEK. AnalyCen, EDT/EHM, 2007.

Mulliqi I, (2012) Kontributnëmodelimin e kinetikëssëprocesittëdjegiessëlinjititnëkaldajat e TC “Kosova B”, Punimdoktorate, UniversitetiiPrishtinës, Kosovë.

Pitt GJ, (1962) The kinetics of the evolution of volatile products from coal fuel.

Saxena SC, (1990) Devolatilization and Combustion Characteristics of Coal Particles, Prog.Energy Combust.