Hexane oil co-production device and production method using co-production device

The invention provides a hexane oil co-production device. The hexane oil co-production device comprises a fractionating tower unit comprising a plurality of fractionating towers which are connected inparallel with each other, wherein the fractionating tower unit comprises a first fractionating tower, a second fractionating tower connected in series with the fractionating tower unit through a pipeline and a third fractionating tower connected in series with the second fractionating tower through a pipeline. The invention also provides a production method using the co-production device. The hexane oil co-production device is capable of improving the operation rate of the equipment, increasing the yield of hexane oil and improving the storage capability and the flexibility of the products, is also capable of producing a plurality of products such as n-hexane, isohexane, food additives and food-grade vegetable oil extraction solvents and the like and is highly efficient and reliable. 本发明提供了种己烷油联产装置，其包括：分馏塔组，其包括若干