TY - GEN
T1 - The application of coal-water slurry technology to turkish bituminous coal
AU - Boylu, F.
AU - Atesok, G.
AU - Ozer, M.
PY - 2005
Y1 - 2005
N2 - Utilization of Turkish bituminous coals for the application of CWS (Coal-Water Slurry) technology is covered by this study. The factors related with slurry preparation and combustion, such as viscosity, stability, atomization and combustion properties of slurry were investigated on Turkish coal sample taken from Zonguldak-Armutçuk. The results of viscosity and stability experiments showed that the suitable coal water slurries were obtained using 0.3% PSS (Sodium Polly Strene Sulphonate) and 0.01 % CMC-Na (Carboxyl Methyl Cellulose, sodium salt) by weight as chemical additives to control the rheology and stability of CWSs. According to atomization studies, The effect of air flows rate on spray quality are more dominant compared to slurry flow rate. By increasing the air flow rates from 20 psi to 100 psi, the droplet size (D50) could be pull down from 100 micron to 50 micron for slurry therefore the slurry flow rate has no effect on spray quality and the finer atomization conditions. On the other hand the slurries are required the higher A/F ratios for fine atomization. At the end of this study, combustion experiments were performed with CWSs prepared from Zonguldak bituminous coal in pilot type down fired coal combustor. Combustion efficiency, and O2, CO, SO2, NO x emissions in the combustion medium and gas emissions in the flue gas were determined.
AB - Utilization of Turkish bituminous coals for the application of CWS (Coal-Water Slurry) technology is covered by this study. The factors related with slurry preparation and combustion, such as viscosity, stability, atomization and combustion properties of slurry were investigated on Turkish coal sample taken from Zonguldak-Armutçuk. The results of viscosity and stability experiments showed that the suitable coal water slurries were obtained using 0.3% PSS (Sodium Polly Strene Sulphonate) and 0.01 % CMC-Na (Carboxyl Methyl Cellulose, sodium salt) by weight as chemical additives to control the rheology and stability of CWSs. According to atomization studies, The effect of air flows rate on spray quality are more dominant compared to slurry flow rate. By increasing the air flow rates from 20 psi to 100 psi, the droplet size (D50) could be pull down from 100 micron to 50 micron for slurry therefore the slurry flow rate has no effect on spray quality and the finer atomization conditions. On the other hand the slurries are required the higher A/F ratios for fine atomization. At the end of this study, combustion experiments were performed with CWSs prepared from Zonguldak bituminous coal in pilot type down fired coal combustor. Combustion efficiency, and O2, CO, SO2, NO x emissions in the combustion medium and gas emissions in the flue gas were determined.
UR - http://www.scopus.com/inward/record.url?scp=84883121039&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84883121039
SN - 9781627480949
T3 - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
SP - 2763
EP - 2772
BT - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
T2 - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
Y2 - 12 September 2005 through 15 September 2005
ER -