| 发明名称 | Process for obtaining acrylic acid | ||
| 摘要 | A process for obtaining acrylic acid, comprising (a) providing a liquid stream S7 comprising acetic acid and acrylic acid, where the molar ratio of acetic acid to acrylic acid in stream S7 is greater than 1:1, (b-1) crystallizing a portion of the acetic acid present in stream S7 to obtain solid crystallized acetic acid in its mother liquor, (b-2) separating the mother liquor from the acetic acid crystallized in (b-1) to obtain the solid crystallized acetic acid and a liquid stream S8 comprising acrylic acid and acetic acid, (c) separating stream S8 into at least one stream S10 depleted of acrylic acid compared to S8 and a stream S11 enriched in acrylic acid compared to S8. | ||
| 申请公布号 | US9458080(B2) | 申请公布日期 | 2016.10.04 |
| 申请号 | US201514958207 | 申请日期 | 2015.12.03 |
| 申请人 | BASF SE | 发明人 | Woerz Nicolai Tonio;Schulz Lukas;Blaschke Tim;Hartmann Marco;Ruether Feelly;Li Yan |
| 分类号 | C07C51/43;C07C57/04;C07C67/343;C07C51/47 | 主分类号 | C07C51/43 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A process for obtaining acrylic acid, comprising (a) providing a liquid stream S7 comprising acetic acid and acrylic acid, where the molar ratio of acetic acid to acrylic acid in stream S7 is greater than 1:1, (b-1) crystallizing a portion of the acetic acid present in stream S7 to obtain solid crystallized acetic acid in its mother liquor, (b-2) separating the mother liquor from the acetic acid crystallized in (b-1) to obtain the solid crystallized acetic acid and a liquid stream S8 comprising acrylic acid and acetic acid, (c) separating stream S8 into at least one stream S10 depleted of acrylic acid compared to S8 and a stream S11 enriched in acrylic acid compared to S8. | ||
| 地址 | Ludwigshafen am Rhein DE | ||