Effect of H 2 O on the combustion characteristics of pulverized coal in O 2 /CO 2 atmosphere

Investigating the combustion characteristic temperature of 28 kinds of Chinese coal in oxy-fuel conditions

“…The characteristic temperatures of coal were obtained under various O 2 concentrations using the widely used non-isothermal TGA method [35][36][37]. The linear fitting method was used to investigate the effects of coal properties, including moisture, volatile matter, fixed carbon and ash, on the characteristic temperature.…”

Achievement of high CO2 concentration in the flue gas at slightly positive pressure during oxy-coal combustion in a 300kWth furnace

“…Laboratory-scale studies performed in universities and research facilities have been used to study the effects of oxy-fuel combustion characteristics. However, these laboratory-scale experiments [16][17][18][19][20][21][22][23] cannot properly simulate aspects such as the heat transfer phenomena for the radiative and convective section of the combustion chamber and the pollutant concentration in the flue gas, and thus cannot be used to determine how to efficiently treat these pollutants to generate a cleaner exhaust gas. Therefore, pilot-scale studies are more appropriate for a better understanding of the overall oxy-fuel combustion phenomena [23][24][25][26][27][28][29].…”

“…It was observed that the most important effect of CO 2 recirculation was the increase of the optimum temperature for SO 2 retention from 850°C (conventional air combustion) to 900-925°C. Yi et al [17] investigated the effect of H 2 O on pulverized coal combustion behavior in an O 2 /CO 2 atmosphere and found that the presence of H 2 O strongly affects the combustion characteristics of coal and coal char in an O 2 /CO 2 atmosphere, resulting in a delayed ignition time, faster burnout, and higher comprehensive combustion reactivity.…”

Combustion Characteristics of Densified Cattle Manure Briquette in an Isothermal Condition

“…To evaluate the combustion performance of fuel under various conditions, comprehensive combustibility index S was defined as follows (Wang et al 2011a(Wang et al , 2012Yi et al 2014),…”

“…Thermogravimetry (TG) is the most common method for analyzing the combustion characteristics of fuel (Wang et al 2011b;Yi et al 2014;Chen et al 2015;Hu et al 2015;Ridha et al 2015;Seo et al 2016;Yi et al 2016). However, most of the equipment can only be used for 5 mg to 10 mg samples, which is not suitable for the study of biomass briquettes.…”