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US4822476A Process for hydrodewaxing hydrocracked lube oil base stocks 失效
加氢脱硫加氢裂化润滑油基础油的工艺

Process for hydrodewaxing hydrocracked lube oil base stocks
Abstract:
We disclose a single stage, multilayered catalyst system capable of hydrodewaxing and hydrofinishing a solvent-dewaxed lube oil base stock. In the first layer we catalytically dewax the solvent-dewaxed stock. In the second layer we hydrofinish the catalytically dewaxed stock. Our invention also relates to a process for hydrodewaxing and hydrofinishing a solvent-dewaxed lube oil base stock.
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