@article{ART002217890},
author={Min Shin, and Jong-Won Yoon and Chang-Sam Kim},
title={Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2017},
volume={27},
number={2},
pages={99-104},
doi={10.6111/JKCGCT.2017.27.2.099}
TY - JOUR
AU - Min Shin,
AU - Jong-Won Yoon
AU - Chang-Sam Kim
TI - Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2017
VL - 27
IS - 2
PB - The Korea Association Of Crystal Growth, Inc.
SP - 99
EP - 104
SN - 1225-1429
AB - Refractories used in low-rank coal gasification reactors are usually exposed in a highly corrosive H2S gas at less than 1000 o C, and their mechanical properties such as erosion resistance and fracture strength decline with the exposure time. However, the cause of the degradation of the mechanical properties has little reported yet. In this paper, two kinds of castable refractories with different refractoriness had been exposed in a H2O/N2/H2S mixed gas with high H2S content for 100 hours at 900 o C, and the changes of microstructure, crystalline phases and erosion resistance were compared before and after the corrosion test. The weight of the refractories decreases due to the elution of silica in the specimens after the corrosion test. The capillary porosities of the samples are reduced, but the erosion resistance of the samples is fatally weakened after the corrosion test. There also are changes in constituent phases; dmitryivanovite (CaAl2O4) and amorphous silica (SiO2) disappear, and gypsum (CaSO4·2H2O) and kaolinite (Al2Si2O5(OH)4) newly appear after the corrosion test. It is obvious that the phase change from dmitryivanovite that works as a binding agent in the castable refractory to gypsum is the main reason of the degradation of the erosion resistance, because the mechanical properties of gypsum are much poorer than those of dmitryivanovite.
KW - Coal gasification;Refractory;H2S;Corrosion;Erosion resistance
DO - 10.6111/JKCGCT.2017.27.2.099
ER -
Min Shin,, Jong-Won Yoon and Chang-Sam Kim. (2017). Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃. Journal of the Korean Crystal Growth and Crystal Technology, 27(2), 99-104.
Min Shin,, Jong-Won Yoon and Chang-Sam Kim. 2017, "Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃", Journal of the Korean Crystal Growth and Crystal Technology, vol.27, no.2 pp.99-104. Available from: doi:10.6111/JKCGCT.2017.27.2.099
Min Shin,, Jong-Won Yoon, Chang-Sam Kim "Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃" Journal of the Korean Crystal Growth and Crystal Technology 27.2 pp.99-104 (2017) : 99.
Min Shin,, Jong-Won Yoon, Chang-Sam Kim. Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃. 2017; 27(2), 99-104. Available from: doi:10.6111/JKCGCT.2017.27.2.099
Min Shin,, Jong-Won Yoon and Chang-Sam Kim. "Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃" Journal of the Korean Crystal Growth and Crystal Technology 27, no.2 (2017) : 99-104.doi: 10.6111/JKCGCT.2017.27.2.099
Min Shin,; Jong-Won Yoon; Chang-Sam Kim. Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃. Journal of the Korean Crystal Growth and Crystal Technology, 27(2), 99-104. doi: 10.6111/JKCGCT.2017.27.2.099
Min Shin,; Jong-Won Yoon; Chang-Sam Kim. Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃. Journal of the Korean Crystal Growth and Crystal Technology. 2017; 27(2) 99-104. doi: 10.6111/JKCGCT.2017.27.2.099
Min Shin,, Jong-Won Yoon, Chang-Sam Kim. Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃. 2017; 27(2), 99-104. Available from: doi:10.6111/JKCGCT.2017.27.2.099
Min Shin,, Jong-Won Yoon and Chang-Sam Kim. "Corrosion of castable refractory in H2O/N2/H2S mixed gas at 900℃" Journal of the Korean Crystal Growth and Crystal Technology 27, no.2 (2017) : 99-104.doi: 10.6111/JKCGCT.2017.27.2.099
