Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure
Reexamination Certificate
2007-10-09
2007-10-09
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
With measuring, testing or inspecting
Of temperature or pressure
C137S014000, C137S051000, C203S091000, C203SDIG016, C203SDIG016, C203SDIG021, C210S664000, C210S741000, C210S802000, C210S808000, C562S600000
Reexamination Certificate
active
11364336
ABSTRACT:
In an apparatus capable of distilling and refining an easily polymerizable substance, piping is performed so that when a strainer in action is switched to a backup strainer, the strainer can be switched after removing air in the backup strainer to replace air in the backup strainer with a discharge liquid of a pump. According to the apparatus, switching the strainers installed on an upstream side of the pump for extracting a liquid of a vacuum distillation column, which distills and refines the easily polymerizable substance, can be performed with no trouble during operation of the distillation column. When the apparatus includes a device for measuring a differential pressure between an upstream side and a downstream side of the strainer in action, two or more strainers installed in parallel can be switched at proper times and the easily polymerizable substance can be produced efficiently.
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Hosaka Hirochika
Nakamura Mitsuo
Ogawa Yasushi
Suzuki Yoshiro
Yada Shuhei
Manoharan Virginia
Mitsubishi Chemical Corporation
Wenderoth , Lind & Ponack, L.L.P.
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