Transport model for devolatilization of large nonplastic coal particles: the effect of secondary reactions

Autor:	Satish C. Saxena, Narasimhan Devanathan
Rok vydání:	1987
Předmět:	Hydrogen business.industry General Chemical Engineering Tar chemistry.chemical_element Thermodynamics General Chemistry Chemical reaction Industrial and Manufacturing Engineering Chemical kinetics chemistry Mass transfer Particle Organic chemistry Coal Particle size business
Zdroj:	Industrial & Engineering Chemistry Research. 26:539-548
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie00063a021
Popis:	A transport model has been developed for the devolatilization of large nonplastic coal particles taking into consideration heat and mass transport phenomena along with first-order kinetics for the pyrolysis reaction. The model considers the multicomponent system of volatiles. A numerical solution is obtained for a particular case of a three-component system involving hydrogen, tar, and ''gas'' comprising CO, CO/sub 2/, H/sub 2/O, CH/sub 4/, etc. The tar is assumed to undergo secondary reactions in the pores of the particle as it escapes. The effect of temperature, pressure, and particle size on the extent of secondary reaction, devolatilization time, and volatile yield is examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d25a47a3703350c64e4619c71deb6098 https://doi.org/10.1021/ie00063a021 Zobrazit plný text záznamu