Distillation apparatus for readily polymerizable compound
AssigneeMitsubishi Chemical Corporation
InventorsShuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Kenji Takasaki, Kiyoshi Takahashi
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Abstract
A distillation apparatus for subjecting a crude readily polymerizable compound to distillation under vacuum conditions to purify the same includes a distillation column and a vacuum generator, an exhaust gas conduit of the vacuum generator being connected to a connecting conduit therebetween through a pressure control valve. The purification method includes using the disclosed distillation apparatus and controlling the action of the pressure control valve based on a pressure of the distillation column, thereby controlling the amount of the exhaust gas to be introduced to control the pressure of the distillation column.
Claims14
A distillation apparatus for subjecting a crude readily polymerizable compound to distillation under vacuum conditions to purify the same, the apparatus comprising:
- a distillation column;
- a reflux tank having an inlet, an outlet and a vapor phase connecting port, the outlet being connected to the distillation column;
- a condenser having a condensing fluid inlet and a condensing fluid outlet, the condensing fluid inlet being supplied with fluid from the distillation column and the condensing fluid outlet being connected to the reflux tank inlet;
- a vacuum generator connected to the vapor phase connecting port of the reflux tank through an exhaust gas conduit of the vacuum generator;
- a pressure control valve connected to the exhaust gas conduit of the vacuum generator;
- and
- a pressure controller connected to the pressure control valve, the pressure controller having a pressure detection line.
Dependencies are inferred from the claim text.