C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 253/34 (2006.01) C07C 253/24 (2006.01) C07C 253/26 (2006.01) C07C 255/03 (2006.01)
Patent
CA 2415395
A method for the purification of crude acetonitrile comprising distilling the crude acetonitrile in a first fractional distillation column at below atmospheric pressure, withdrawing a first side draw fraction comprising acetonitrile, distilling the first side draw fraction in a second fractional distillation column at super atmospheric pressure, and withdrawing from the second distillation a second side draw fraction comprising purified acetonitrile.
L'invention concerne un procédé de purification d'actéonitrile brut consistant à distiller l'acétonitrile brut dans une première colonne de distillation fractionnée à une pression inférieure à la pression atmosphérique, à retirer une première fraction soutirée latérale, à distiller ladite première fraction dans une seconde colonne de distillation fractionnée à une pression supérieure à la pression atmosphérique et à retirer de la seconde distillation une seconde fraction soutirée latérale renfermant l'acétonitrile purifié.
Gowling Lafleur Henderson Llp
Ineos Usa Llc
The Standard Oil Company
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