Title:
DEVICE FOR CRYSTALLIZING ACRYLIC ACID AND METHOD FOR CRYSTALLIZING ACRYLIC ACID USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/001887
Kind Code:
A1
Abstract:
A crystallization device is provided with which it is possible to efficiently obtain purified acrylic acid having high purity.
The crystallization device is for separating an acrylic-acid-containing solution into a mother liquor and purified acrylic acid, and comprises a crystallizer having a discharge port through which a mother liquor and purified acrylic acid are alternately taken out, a feed line through which the acrylic-acid-containing solution is fed to the crystallizer, and recovery lines which have been connected to the discharge port and through which the mother liquor and the purified acrylic acid are alternately recovered from the crystallizer, the recovery lines having, disposed therein, switch members each comprising a ball valve or gate valve.
Inventors:
SAKAMOTO, Kazuhiko (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
坂元 一彦 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
UENO, Koji (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
上野 晃嗣 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
坂元 一彦 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
UENO, Koji (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
上野 晃嗣 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
Application Number:
JP2010/060737
Publication Date:
January 06, 2011
Filing Date:
June 24, 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)
SAKAMOTO, Kazuhiko (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
坂元 一彦 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
UENO, Koji (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, 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)
SAKAMOTO, Kazuhiko (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
坂元 一彦 (〒82 兵庫県姫路市網干区興浜字西沖９９２番地の１ 株式会社日本触媒内 Hyogo, 〒6711282, JP)
UENO, Koji (992-1, Aza Nishioki, Okihama, Aboshi-ku, Himeji-sh, Hyogo 82, 〒6711282, JP)
International Classes:
C07C51/47; B01D9/02; C07C57/07
Attorney, Agent or Firm:
HATTA & ASSOCIATES (Dia Palace Nibancho, 11-9 Nibancho, Chiyoda-k, Tokyo 84, 〒1020084, JP)
Download PDF:
Previous Patent: ROTATION ANGLE DETECTING DEVICE FOR CAR DRIVING MOTOR, AND BEARING EQUIPPED WITH THE ROTATION ANGLE ...
Next Patent: STEERING DEVICE
Next Patent: STEERING DEVICE