减压馏程
After revamping, the distillation range of the forth-side vacuum stream was 74 ° C. the colority was less than 4. 5, supplying superior lube-stock for the downstream units.
改造后的减四线油的馏程宽度为74°C,色度小于4.5号,为下游装置提供了较好的润滑油料。
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