Model for estimation of coal self-ignition in stockpile

Abstract

Pojave samozagrevanja i samopaljenja su izuzetno važne pri skladištenju uglja jer mogu da dovedu do pogoršanja kvaliteta uglja i čitavog niza problema, pa čak i do prekida rada termoenergetskih postrojenja. Ove pojave se posebno proučavaju kod niskokaloričnih ugljeva koji pokazuju veću sklonost ka samopaljenju. U raduje dat pregled postojećih modela i za izabrani model izvršena je analiza uticaja karakteristika skladišta, karakteristika okoline i karakteristika uglja na pojavu samopaljenja.The phenomena of self-heating and self-ignition are very important during the coal storage in stockpile. They can have the influence on decrease of coal quality and cause some problems in the thermal power plant operation. These phenomena are the subject of numerous investigations, especially for low rank coals due to their higher tendency to self-ignition. In this paper, the review of models is presented and for the accepted model the influence of the stockpile, atmospheric conditions and coal characteristics on the self-ignition are analyzed

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