Patent ID: 7037411
Filing Date: 2006-05-02
Classification: B01D,B01J,C07C,Y10S,Y10T

Abstract:
1. An apparatus for handling an easily polymerizable substance, comprising: a decompressor for handling under reduced pressure a liquid containing the easily polymerizable substance; a liquid extraction pipe for extracting the liquid from said decompressor, said liquid extraction pipe having an upstream end that opens in said decompressor; a pump in a mid-section of said liquid extraction pipe; a first strainer connected to said liquid extraction pipe on an upstream side of said pump; a second strainer connected to said liquid extraction pipe on the upstream side of said pump, said second strainer being in parallel with said first strainer; a first valve on an upstream side of said first strainer; a second valve on a downstream side of said first strainer; a third valve on a upstream side of said second strainer; a fourth valve on a downstream side of said second strainer; a first exhaust device for exhausting air from a part between said first valve and said second valve; a second exhaust device for exhausting air from a part between said third valve and said fourth valve; and a branch pipe connecting said part between said first and second valves and said part between said third and fourth valves with a part of said liquid extraction pipe on a downstream side of said pump, wherein said decompressor comprises a device for distilling under reduced pressure an easily polymerizable polymer selected from the group consisting of acrylic acid, methacrylic acid, and esters thereof.