发明授权
- 专利标题： Method for production of acrylic acid
- 专利标题（中）： 丙烯酸生产方法
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申请号： US10859025申请日： 2004-06-02
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公开(公告)号： US07151194B2公开(公告)日： 2006-12-19
- 发明人: Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
- 申请人： Kouji Ueno , Harunori Hirao , Naoki Serata , Takeshi Yokogoshiya
- 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： Mathews, Shepherd, McKay & Bruneau, P.A.
- 优先权： JP2003-160772 20030605
- 主分类号： C07C51/16
- IPC分类号： C07C51/16 ; C07C51/42
摘要：
A method for producing acrylic acid from an acrylic acid-containing solution of high concentration without performing azeotropic distillation is provided. This method of producing acrylic acid comprises steps of absorbing acrylic acid-containing gas, distilling the acrylic acid-containing solution without using an azeotropic solvent thereby obtaining crude acrylic acid as a column bottom stream and/or a column side stream, and supplying the crude acrylic acid to a crystallizing step and melt crystallizing the crude acrylic acid thereby obtaining purified acrylic acid.
公开/授权文献
- US20040249201A1 Method for production of acrylic acid 公开/授权日：2004-12-09