摘要
磷石膏是高浓度磷肥工业排放的固体废弃物,采用HSC Chemistry 5热力学计算软件对焦炭、硫磺、氢气、一氧化碳与磷石膏还原反应进行了对比分析,探索如分解温度、平衡常数、耗能与还原介质的关系。结果表明,不论采用上述何种还原介质,CaSO4还原分解成CaS均比CaO容易进行。
Phosphogypsum was the solid waste discharged from the high concentration phosphate fertilizer industry. Thermodynamic calculation software HSC Chemistry 5 was used to contrast and analysis the reductive reaction of phosphogypsum with coke, sulfur, hydrogen and carbon monoxide. The relationships of reducing agent and decomposition temperature, equilibrium constant and energy consumption were explored. The results showed that with CO as reducing agent, the reducing reaction was easiest and the energy consumption was lowest; whether using the above reducing agent, it was easier for CaSO4 to be decomposed into CaS than into CaO.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第3期1128-1132,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(21166012)
关键词
磷石膏
热力学分析
还原
一氧化碳
phosphogypsum
thermodynamic analysis
reduction
carbon monoxide