Title:
シクロヘキサノンオキシムの蒸発方法
Document Type and Number:
Japanese Patent JP4223694
Kind Code:
B2
Abstract:
A method is provided for evaporating cyclohexanone oxime in which cyclohexanone oxime is evaporated using a falling-film evaporator with wetting the evaporation surface of the evaporator well with the cyclohexanone oxime at a pressure of less than about 1060 Torr with a falling rate of the cyclohexanone oxime of about 170 kg/hour or more per one meter around the circumference of evaporation surface at the lowest part of the evaporator. In this method, the cyclohexanone oxime is evaporated efficiently with little decomposition thereof, while preventing the plugging of the pipes of the evaporator and continuously carrying out the operation of the evaporator for a long period of time.
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Inventors:
Yasuki Shimazu
Kanji Kuwahara
Kitamura Masaru
Kanji Kuwahara
Kitamura Masaru
Application Number:
JP2001093361A
Publication Date:
February 12, 2009
Filing Date:
March 28, 2001
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
C07C249/14; B01D1/06; C07C251/44
Domestic Patent References:
JP6049015A | ||||
JP2025457A | ||||
JP2000256308A | ||||
JP2000256309A | ||||
JP53037641A | ||||
JP4154746A | ||||
JP60054349A | ||||
JP2001029718A |
Attorney, Agent or Firm:
Toshikazu Fukai