Kinetics of CO 2 and steam gasification of Victorian brown coal chars

Effect of operating parameters on coal gasification

“…Several researchers (Alvarez et al 1994;Ahn et al 2001;Zhang et al 2006;Cakal et al 2007;Liu et al 2008;Everson et al 2008;Fouga et al 2011;Tanner and Bhattacharya 2016;Wang et al 2015) have studied kinetic behavior of coal gasification using different kinetic models. They have used different raw materials and various operating conditions.…”

Effects of alkali-oxygen oxidation temperature on the structures and combustion properties of Shengli lignite

“…When the temperature of AOO was improved to 150-200 C, the peaks at 1100 cm À1 and 1030 cm À1 corresponding to SiO 2 were weakened, which may result from the reaction between SiO 2 and NaOH to generate Na 2 SiO 3 . When the temperature rose to 250-300 C, the sodium silicate hydrolysis reaction maybe occur (Na 2 SiO 3 + 2H 2 content of the aliphatic side chains decreased to the lowest level, and the carboxyl groups nearly disappeared, which proved further that the components with high reactivity decreased for the samples treated by AOO among 150-200 C.…”

“…Therefore, the ignition temperature of different coal samples were calculated using TG-DTG method. 2,56 The ignition temperature of raw coal was 310 C, and the value increased to 406 C for SL-RT sample. The ignition temperature of AOO samples moved from 310 C for raw coal to 740-760 C when the AOO was conducted within the range of 150-200 C. When the AOO temperatures fell into the range of 250-300 C, the ignition temperature decreased to 410-440 C, which was still higher than that of raw coal and SL-RT.…”

Performance Analysis on an Entrained‐Flow Gasifier by Coal Moisture

“…where k m is the reaction constant and ψ m is the structure parameter from a correlation with the random pore model . Since the reaction rate in Eq.…”