Method for collecting (meth)acrolein or (meth)acrylic acid and collecting device for the same
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United States of America Patent
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Aug 31, 2010
Grant Date -
Sep 21, 2006
app pub date -
May 16, 2006
filing date -
Nov 28, 2003
priority date (Note) -
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Abstract
(Meth)acrolein or (meth)acrylic acid is collected by bringing a reaction gas (1) containing (meth)acrolein or (meth)acrylic acid obtained through a vapor-phase catalytic oxidation reaction into contact with an aqueous solution as a collecting solvent in a collecting tower main body (2). The reaction gas (1) is supplied to the collecting tower main body (2) from two nozzles (2c) facing each other, and is caused to collide in the collecting tower main body (2). According to the present invention, (meth)acrolein or (meth)acrylic acid can be efficiently collected from a gas containing (meth)acrolein or (meth)acrylic acid while preventing polymerization.
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