Title:
易重合性化合物または易重合性化合物含有液の蒸留方法
Document Type and Number:
Japanese Patent JP4080090
Kind Code:
B2
Abstract:
In distillation of a polymerizable compound such as (meth)acrylic acid or a liquid containing such a polymerizable compound with use of a distillation column equipped with a reboiler, (a) a vertical multi-tube reboiler whose outlet nozzle inside diameter (D1) is 0.2 to 1 time its reboiler shell inside diameter (D2) is used as the reboiler, (b) an outlet of an outlet nozzle of the reboiler to a gas-phase section of the distillation column is provided at a position such that a distance L from the top tubesheet of the reboiler to the lower end of the outlet of the outlet nozzle satisfies L=(0.4 to 3)xD1, and (c) a liquid level in the distillation column is maintained in a range such that a height H of the liquid level from the top tubesheet of the reboiler satisfies H=(0.1 to 0.8)xL.
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Inventors:
Takeshi Nishimura
Yukihiro Matsumoto
Yukihiro Matsumoto
Application Number:
JP4027599A
Publication Date:
April 23, 2008
Filing Date:
February 18, 1999
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01D3/00; C07C51/44; B01D3/32; B01D3/42; C07C57/07; C07C67/54; C07C69/54
Domestic Patent References:
| JP1087738A |
Other References:
化学工場における装置・機器取扱い法,株式会社 東京化学同人,1964年,第1版,第91-92頁
蒸留工学ハンドブック,株式会社 朝倉書店,1966年,第1版,第447-457頁
<工場操作シリーズ> 改訂増補・蒸留,株式会社 化学工業社,1981年,改訂増補版,第119-120頁
蒸留工学ハンドブック,株式会社 朝倉書店,1966年,第1版,第447-457頁
<工場操作シリーズ> 改訂増補・蒸留,株式会社 化学工業社,1981年,改訂増補版,第119-120頁