Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-06-17
2000-05-30
Wilson, James O.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568694, 568699, C07C 4100
Patent
active
060692847
ABSTRACT:
A process to separate diisopropyl ether from a mixture of diisopropyl ether, isopropyl alcohol, and water has been developed. The process begins with distilling, in a distillation column, the mixture into a bottoms stream containing water and isopropyl alcohol and an overhead stream containing an azeotrope of diisopropyl ether, isopropyl alcohol, and water. The overhead stream is condensed and allowed to form an aqueous phase enriched in isopropyl alcohol and water and an organic phase enriched in diisopropyl ether with some water and isopropyl alcohol in an overhead receiver. The aqueous phase is recycled to the distillation column. The organic phase is passed to a drier to form a bottoms product stream containing at least 99 mole percent diisopropyl ether and a drier overhead stream containing an azeotrope of diisopropyl ether, isopropyl alcohol, and water. The drier overhead stream is condensed and introduced to the overhead receiver described earlier to combine with the condensed overhead stream from the distillation column and to form the aqueous phase and an organic phase discussed above. The bottoms diisopropyl ether product stream from the drier is collected.
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Leet William A.
Luebke Charles P.
Maas Maryann
Molinaro Frank S.
Tolomei John G.
UOP LLC
Wilson James O.
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