摘要
本文对稀土氧化物与ＳＯ２的气固相反应进行了系统的热力学计算研究，得到了系统化的含硫气体平衡分压曲线；研究表明，从热力学上讲，当温度低于２３７℃时，所有稀土氧化物都可作为烟道气干法脱硫的吸收剂；可以使用ＣｅＯ２通过干吸收生成Ｃｅ（ＳＯ４）２和热再生循环过程实现固体再生干法脱除烟气中的ＳＯ２，其吸收ＳＯ２和再生ＣｅＯ２的温度范围分别为１００～４４０℃和７１５～８６５℃。
The thermodynamic equilibrium of reactions between rare earth oxides and sulphur dioxide in the flue gas has been studied, and systematic equilibrium curves of sulphureous gases partial pressure with temperature have been obtained. The results show that it is thermodynamic probable that the most rare earth oxides could be used as dry desulphurization absorbent when the temperature below 237℃,and the cerium oxide (CeO 2) could be used as an acceptor in the regenerative dry flue gas desulphurization (FGD) process. The temperature of the sulfur dioxide absorption and the cerium oxide regeneration would be 100￣440℃ and 715￣865℃, respectively.
出处
《稀土》
EI
CAS
CSCD
北大核心
1997年第3期18-22,共5页
Chinese Rare Earths
基金
国家自然科学基金
