发明授权
US08592627B2 Process for producing (meth)acrylic acid and crystallization system
有权
制备(甲基)丙烯酸和结晶体系的方法
- 专利标题: Process for producing (meth)acrylic acid and crystallization system
- 专利标题(中): 制备(甲基)丙烯酸和结晶体系的方法
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申请号: US13266983申请日: 2010-05-07
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公开(公告)号: US08592627B2公开(公告)日: 2013-11-26
- 发明人: Takashi Sugimoto
- 申请人: Takashi Sugimoto
- 申请人地址: JP Osaka
- 专利权人: Nippon Shokubai Co., Ltd.
- 当前专利权人: Nippon Shokubai Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2009-119162 20090515; JP2009-119163 20090515
- 国际申请: PCT/JP2010/057808 WO 20100507
- 国际公布: WO2010/131603 WO 20101118
- 主分类号: C07C51/43
- IPC分类号: C07C51/43
摘要:
A process for producing (meth)acrylic acid comprising the steps of: supplying a cooling medium to a crystallizer (1) from a heat source device (4A), thereby crystallizing (meth)acrylic acid from a crude (meth)acrylic acid solution; discharging the cooling medium from the crystallizer (1) and returning the cooling medium to the heat source device (4A); supplying a heating medium to the crystallizer (1) from a heat source device (4B), thereby melting the (meth)acrylic acid; and discharging the heating medium from the crystallizer (1) and returning the heating medium to the heat source device (4B); wherein temperature of the cooling medium returned to the heat source device (4A) is maintained constant by utilizing a first buffer tank (5); and temperature of the heating medium returned to the heat source device (4B) is maintained constant by utilizing a second buffer tank (6).
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