白土精制是指利用活性白土在一定温度下处理油料,降低油品的残炭值及酸值(或酸度),改善油品的颜色及安定性。润滑油原料经过溶剂精制、溶剂脱蜡和脱沥青工艺处理后,油品中还含有少量未分离掉的溶剂,以及因回收溶剂被加热生成的大分子缩合物、胶质等。这些杂质的存在影响油品的安定性、颜色和残炭值等。利用白土精制的方法可以达到对润滑油原料进行补充精制的目的。
通过经济效益评估,加氢精制工艺明显优于白土精制工艺。
By evaluating economic profit, hydrofining obviously prefer to clay refining.
采用高选择性加氢脱烯烃技术处理连续重整生成油可取代传统的白土精制工艺。
The highly selective hydrogenation process for the removal of olefins can completely replace the conventional clay treating process for treating the reformate of CCR unit.
通过蒸发塔底泵和护进料泵两系统采用变频调速器的数据分析表明,它是提高白土精制装置自动化水平的有效途径。
Applying frequency governor to bottom pump of evaporation tower and feed pump of furnace, the result showed that it is the effective way to improve the automatic level in clay unit.
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