TY - JOUR
T1 - Role of Water Vapor in Oxidative Decomposition of Calcium Sulfide
AU - Wu, Shengji
AU - Uddin, Md A.
AU - Nagamine, Shinsuke
AU - Sasaoka, Eiji
N1 - Funding Information:
This work was supported by the Ministry of Education, Science, Sport and Culture of Japan through the Grant-in-Aid on Priority-Area Research (Region No.737, Grant No.11218207).
PY - 2003/3
Y1 - 2003/3
N2 - In gasifiers of coal, decomposition of limestone into CaO and CO2 depend on the concentration and pressure of CO2 and the temperature. The basic characters of the oxidative decomposition of CaS were studied using reagent grade CaS to determine a method for perfect conversion of CaS formed from a natural lime to CaSO4. The role of H2O in the oxidative decomposition of CaS carried out using a flow-type thermogravimetric apparatus at 1 atm was studied. At 900°C, the presence of H2O drastically accelerated the decomposition of CaS with O2. CaS directly reacted with H2O at 800°-1000°C and formed CaO, SO2, and H2. The evolution of SO2 in the 10% H2O-1% O2-He system indicated that there is a synergistic effect of H2O and O2 on the oxidative decomposition of CaS. H2O played an important role in the oxidative decomposition of CaS even if the O2 concentration was high.
AB - In gasifiers of coal, decomposition of limestone into CaO and CO2 depend on the concentration and pressure of CO2 and the temperature. The basic characters of the oxidative decomposition of CaS were studied using reagent grade CaS to determine a method for perfect conversion of CaS formed from a natural lime to CaSO4. The role of H2O in the oxidative decomposition of CaS carried out using a flow-type thermogravimetric apparatus at 1 atm was studied. At 900°C, the presence of H2O drastically accelerated the decomposition of CaS with O2. CaS directly reacted with H2O at 800°-1000°C and formed CaO, SO2, and H2. The evolution of SO2 in the 10% H2O-1% O2-He system indicated that there is a synergistic effect of H2O and O2 on the oxidative decomposition of CaS. H2O played an important role in the oxidative decomposition of CaS even if the O2 concentration was high.
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M3 - Conference article
AN - SCOPUS:0344984408
VL - 48
SP - 405
EP - 406
JO - ACS Division of Fuel Chemistry, Preprints
JF - ACS Division of Fuel Chemistry, Preprints
SN - 0569-3772
IS - 1
T2 - Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference
Y2 - 10 March 2003 through 12 March 2003
ER -