The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2009
Filed:
Apr. 07, 2006
Shuhei Yada, Tokyo, JP;
Yasushi Ogawa, Yokkaichi, JP;
Yoshiro Suzuki, Yokkaichi, JP;
Kenji Takasaki, Yokkaichi, JP;
Shuhei Yada, Tokyo, JP;
Yasushi Ogawa, Yokkaichi, JP;
Yoshiro Suzuki, Yokkaichi, JP;
Kenji Takasaki, Yokkaichi, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A decomposition reaction apparatus or distillation apparatus for acrylic acid in which a column bottom liquid heated in a reboiler () is supplied from a supply port () provided on a side wall of a column body () having: a top plate () above the supply port (); and an impingement plate () provided vertically to the top plate (), for preventing scattering of the column bottom liquid to a supply direction. The top plate () is provided such that the top face of the top plate () is inclined downward from a base end to a tip end. The present invention allows: suppression of formation of a polymerized product due to flowing of a liquid or gas heated in a reboiler into a column with a simple structure; and a stable continuous operation of column equipment over a long period of time.