摘要
简要介绍了磷石膏的组成、危害以及现状.利用高硫煤还原分解磷石膏进行了试验研究,得到了高硫煤还原分解磷石膏时,磷石膏在约1000℃时进行分解,并且在1 200℃达到最高的分解率与脱硫率.随着反应温度的升高,磷石膏的分解率与脱硫率在提高,同时磷石膏分解率达到97%的反应时间逐渐减少.利用高硫煤还原分解磷石膏,可以有效提高烟气中SO2的浓度,磷石膏与高硫煤摩尔比约为0.7时,SO2浓度达到最高约14%,增加了磷石膏再利用的经济效益.
The composition, damage and situation of phosphogypsum are briefly introduced. It is found out through the experimental study on reductive decomposition of phosphogypsum with high sulfur coal that phosphogypsum decomposes at 1 000 ℃. When the temperature reaches 1 200℃, the rate of decomposition and desulfu- rization is the highest. With the increase of the reaction temperature, the rate of decomposition and desulfurization increases while the reaction time is becoming less. The high sulfur coal improves the concentration of SO2 to 14% when the molar ratio of phosphogypsum to high sulfur coal is 0. 7. This study may increase economic benefit of phosphogypsum＇s reuse.
出处
《昆明理工大学学报（理工版）》
北大核心
2010年第3期100-103,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
国家高技术研究发展计划(863)项目(2007AA062321)
云南省教育厅项目(08Y0260)
关键词
高硫煤
磷石膏
还原分解
分解率
脱硫率
high sulfur coal
phosphogypsum
reductive decomposition
decomposition rate
desulfurization efficiency
