深圳风采规则

怎样能得到高纯度的煤焦油

更新时间2018-06-13 10:04:29  点击次数:916次

煤沥青生产厂家谈谈煤焦油怎样可以得到高纯度,煤焦油与洗油利用减压蒸馏二次结晶的过程中,减压蒸馏先删除部分的β-甲基萘以及α-甲基萘馏分,得到纯度约70%浓缩联苯分数之前,进一步结晶去除杂质,如二甲基萘和吲哚获得高纯度的PCB产品。

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