Separation of 2,7 diisopropylnaphthalene from a feed mixture com

Details Separation of 2,7 diisopropylnaphthalene from a feed mixture com Separation of 2,7 diisopropylnaphthalene from a feed mixture com

1990-04-16

1991-04-30

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

585820, 585826, 585827, C07C 713

Patent

active

050120395

ABSTRACT:
A process for the separation of 2,7 DIPN from a hydrocarbon feed mixture comprising 2,7 DIPN and one or more other DIPN isomers, which process employs an adsorbent, comprising a type Y zeolite, dried to an LOI less than 10% which has been at least partially cation exchanged, at exchangeable sites, with potassium. The 2,7 DIPN thereafter is removed from the adsorbent by contacting it with an aromatic hydrocarbon desorbent material, comprising a xylene, e.g., para-xylene, benzene or toluene at desorbent conditions, and is recovered as an extract product stream. In a preferred embodiment, the process uses a simulated moving-bed countercurrent flow system.

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