✦ LIBER ✦

The combustion of Loy Yang brown coal char

✍ Scribed by B.C. Young; I.W. Smith

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 598 KB
Volume: 76
Category: Article
ISSN: 0010-2180
DOI: 10.1016/0010-2180(89)90074-6

No coin nor oath required. For personal study only.

✦ Synopsis

Combustion rate measurements of Loy Yang brown coal char particles (88 #m median size) over the temperature range 940-1420 K yielded a chemical rate coefficient Re, expressed as Re= 12.6 expl-68.3/(RTp)] kg/m2s (kPa 02) °.4.

Particle size and density decreased with burn off, but in an unusual manner that requires further investigation. The value of the activation energy, the manner of change in size, and density of the particles during combustion, and the observed order in oxygen (0.4), suggest that the burning rate was controlled by the combined effects of pore diffusion and chemical reaction, with a tendency for chemical reaction to dominate.

📜 SIMILAR VOLUMES

The Influence of Volatiles on Combustion

The Influence of Volatiles on Combustion Rate of Loy Yang Coal Char in a Fluidised Bed Combustor

✍ Ross, D. P. ;Laurent, P. J. ;Schluter, G. B. ;Zhang, D. K. 📂 Article 📅 2008 🏛 Curtin University of Technology 🌐 English ⚖ 459 KB 👁 2 views

The porosity of brown-coal char

✍ D.G. Evans; J.A. Hermann 📂 Article 📅 1970 🏛 Elsevier Science 🌐 English ⚖ 522 KB

Characteristics of coal char combustion

✍ Reginald E. Mitchell 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 341 KB

The adsorption of oxygen on brown coal c

The adsorption of oxygen on brown coal char

✍ D.J. Allardice 📂 Article 📅 1966 🏛 Elsevier Science 🌐 English ⚖ 763 KB

The adsorption of oxygen on degassed brown coal char has been investigated gravimetrically in the temperature range 25"-200°C and at pressures up to 1 atm. The adsorption occurs by two separate processes, one reversible and the other irreversible. Methods have been devised to investigate these proce

Dynamic behavior of coal char particle c

Dynamic behavior of coal char particle combustion

✍ K. Reményi; V. Kertész; L. Vörös; F. Horváth 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 816 KB

A mathematical model is developed that represents a first approximation of the dynamics of the coal char combustion. The model determines a range of particle sizes and gas temperatures where oscillation can occur and propagating spherical waves surround the particle. It is also possible to compute t

Discrete simulation of cenospheric coal-

Discrete simulation of cenospheric coal-char combustion

✍ Ranajit Sahu; Richard C. Flagan; George R. Gavalas 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 582 KB

A phenomenological model of structural transformations during pulverized coal char combustion is presented. The random geometry of the voids is modeled realistically by means of a random assemblage of spheres in a spherical particle. Pore counectedn~s and growth are accounted for as the combustion p