Title:
METHOD FOR PRODUCING (METH)ACRYLIC ACID AND CRYSTALLIZATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/131603
Kind Code:
A1
Abstract:
Provided is a method for producing (meth)acrylic acid, which comprises a step for feeding a cooling medium from a heat source (4A) to a crystallization unit (1) and crystallizing (meth)acrylic acid from a crude (meth)acrylic acid solution; a step for discharging the cooling medium from the crystallization unit (1) and returning said cooling medium to the heat source (4A); a step for feeding heating medium from a heat source (4B) to the crystallization unit (1) and melting the (meth)acrylic acid; and a step for discharging the heating medium from the crystallization unit (1) and returning said heating medium to the heat source (4B). The temperature of the cooling medium returned to the heat source (4A) is maintained within a fixed range using a first buffer tank (5), and the temperature of the heating medium returned to the heat source (4B) is maintained within a fixed range using a second buffer tank (6).
Inventors:
SUGIMOTO, Takashi (992-1, Aza Nishioki, Okinohama, Aboshi-ku, Himeji-sh, Hyogo 41, 〒6711241, JP)
Application Number:
JP2010/057808
Publication Date:
November 18, 2010
Filing Date:
May 07, 2010
Export Citation:
Assignee:
NIPPON SHOKUBAI CO., LTD. (1-1 Koraibashi 4-chome, Chuo-ku Osaka-sh, Osaka 43, 〒5410043, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 〒5410043, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 〒5410043, JP)
International Classes:
C07C51/43; B01D9/02; C07C57/07
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (Fujita-Toyobo Building 9th floor, 1-16 Dojima 2-chome, Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
Claims:
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