脱硫剂羟基氧化铁中硫磺的回收研究

摘要

以四氯乙烯为溶剂，采用溶剂法从脱硫剂羟基氧化铁中回收硫磺。考察了浸取温度、浸取时间、液-固比和溶剂重复使用等因素对硫磺回收率的影响，并对羟基氧化铁和产物硫磺进行了 XRD 表征。结果表明：在羟基氧化铁20 g、浸取温度为80℃、浸取时间60 min、液-固比8：1的条件下，硫磺的回收率为97.5%；XRD表征结果证实了该产物为硫磺。%Sulfur was recovered from hydroxyl iron oxide desulfurizer containing 25.0% sulfur by solvent method in tetrachloroethylene solvent. The influence of reaction temperature,reaction time,liquid-solid ratio and reusing times of organic solution on sulfur recovery was investigated. The hydroxyl iron oxide desulfurizer and the product were characterized by X-ray diffraction (XRD) technology. The results show that, when the liquid-solid ratio of tetrachloroethylene to desulfurizer hydroxyl iron oxide containing 25.0% sulfur is 8:1, leaching temperature is 80 ℃, leaching time is 60 min, hydroxyl iron oxide is 20 g, the recovery of sulfur can be over 97.5%. The XRD characterization result has proved that recovered product is sulfur.