油脂脱色废白土焙烧-酸化法再生工艺条件研究  

Study on the technological conditions of regeneration of spent bleaching clay using calcine-acidification method

作　　者：郑彦芳[1] 魏安池[1] 赵凯艳[1] 宋海东[1] 

机构地区：[1]河南工业大学粮油食品学院,河南郑州450001

出　　处：《粮食与油脂》2014年第3期50-53,共4页Cereals & Oils

摘　　要：采用焙烧―酸化法对废白土进行再生,对焙烧温度以及酸化的工艺条件进行了探索。结果表明:废白土再生的最佳焙烧温度为500℃,响应面优化确定了酸化的工艺条件:硫酸体积分数为6.70%,酸化温度为55℃,液固比为3.2∶1,酸化时间为60 min,且在该条件下所得再生白土的脱色率为94.82%。Experiments were performed on the regeneration of spent bleaching clay using the method of calcine-acidification. The calcination temperature and acid activation conditions were investigated. Results showed that the optimum calcination temperature was 500 ℃. The response surface methodology determined the optimum conditions were as follows：sulfuric acid volume fraction 6.70%;acidification temperature 55 ℃;liquid-solid ratio 3.2∶1;acidification time 60min. Under these conditions,the bleaching efficiency of the regenerated clay was 94.82%.

关 键 词：脱色废白土 焙烧-酸化法 再生 脱色率 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程]