Lubricating-type decompression and deep drawing-type decompression
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Dear experts in vacuum distillation: Is there any significant difference between lubricant-type vacuum distillation units and deep drawing-type vacuum distillation units? By the way, can the wax oil obtained through deep drawing vacuum distillation be used as a raw material for lubricant hydrogenation?
The uses of the extracted wax oil vary, which in turn results in different quality requirements; as a consequence, the equipment and methods of operation also differ. After deep extraction, depressurize several side streams to see which one can meet the raw material requirements for lubricant hydrogenation.
Deep vacuum distillation is mainly used for catalytic feedstocks, where requirements regarding boiling range and color are not stringent. In contrast, lubricant vacuum distillation imposes strict requirements on aspects such as the boiling range width and color of the product; therefore, products obtained through deep vacuum distillation generally cannot be used as raw materials for lubricants.