Apparatus and method for handling easily polymerizable...

Details Apparatus and method for handling easily polymerizable... Apparatus and method for handling easily polymerizable...

2006-05-02

2006-05-02

Manoharan, Virginia (Department: 1764)

Distillation: apparatus

Apparatus

Systems

C202S160000, C137S565230, C137S625280, C210S295000, C210S428000, C562S600000

Reexamination Certificate

active

07037411

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.

REFERENCES:
patent: 3797744 (1974-03-01), Smith
patent: 5148945 (1992-09-01), Geatz
patent: 5417346 (1995-05-01), Ferri et al.
patent: 6676808 (2004-01-01), Hamamoto et al.
patent: 6833056 (2004-12-01), Kamiya et al.
patent: 8-24528 (1996-01-01), None
patent: 2000-336162 (2000-12-01), None
English Translations of Japan 2000-336162 and JApan 8-24528.

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