Tower and method for refining organic compound contg. easy-to-plug matter

Application Number: 00109006
Application Date: 2000.06.01
Publication Number: 1276253
Publication Date: 2000.12.13
Priority Information: 1999/6/3 JP 156655/1999
International: B01D3/22
Applicant(s) Name: Nippon Shokubai Co., Ltd.
Inventor(s) Name: Nishimura Takeshi;Matsumoto Yukihiro
Patent Agency Code: 11021
Patent Agent: wang huimin
Abstract In a purification tower wherein a shower contact type baffle plate is arranged, an opening part is formed on all faces of the shower. As an opening diameter of said opening part, 3-30 mm is desirable, and it is recommended that total area of the opening part is within a range of 10-50% to an upper part area of the baffle plate. When the purification tower is used, an organic compound such as methacrylic acid, methacrylate ester, phthalic acid, maleic acid, or the like, containing an easily blockable substance can be refined continuously over a long period of time.