Kinetic study of coal steam and CO2 gasification: A new method to reduce interparticle diffusion

Characterization of coal char gasification with steam in a micro-fluidized bed reaction analyzer

“…The preceding char gasification behavior in MFBRA exhibited an obvious difference with those from the literature reports using TGA [26][27][28][29]. The latter reported usually that the reaction rate at the beginning was very low, and the peak reaction rate appears in the conversion range of 0.3-0.7.…”

Deployment of Underground Coal Gasification in India

“…Chemical composition of coal: Volatile matter, moisture and ash content have the primary effect on gasification reaction [16][17][18][19] . Several studies have been published on coal analysis (see for example refs 20, 21).…”

“…Studies considering the reaction kinetics and source terms while dealing with the seam as porous media using a single-step decomposition method and analysing the role of frequency factors and activation energies of several reactions have been undertaken 26,27 . Recently even the pyrolysis and the use of CO 2 as a gasifying agent have been tested in sub-bituminous coal as well as lignite [28][29][30][31] . Even the modelling of species diffusion for CO 2 gasification in the UCG context, for single particle basis using TGA study of CO 2 gasification has been studied and reported 32 .…”

Coke Reactivity in Simulated Blast Furnace Shaft Conditions

“…[42] A coke mass of 50 mg was used in each test with a size below 90 lm, a particle size which has been considered safe for coal gasification to rule out intra-particle diffusion. [43] Inter-particle diffusion control was ruled out by performing tests at 1050°C with 50, 100, and 150 mg of material with both H 2 O and CO 2 , in which no difference in conversion rate was observed compared to from sample mass. The carbon conversion curves are depicted in Figure 6.…”