| 发明名称 |
Processes for producing acrylic acids and acrylates |
| 摘要 |
A process for producing an acrylate product. The process comprises the step of providing a crude product stream comprising the acrylate product and an alkylenating agent. The process further comprises the step of separating at least a portion of the crude product stream to form an alkylenating agent stream and an intermediate product stream. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate product. The separating is performed in at least one column at an operating pressure ranging from 40 kPa to 80 kPa. |
| 申请公布号 |
US8864950(B2) |
申请公布日期 |
2014.10.21 |
| 申请号 |
US201213345043 |
申请日期 |
2012.01.06 |
| 申请人 |
Celanese International Corporation |
发明人 |
Peterson Craig;Chapman Josefina;Gallacher Jonathan |
| 分类号 |
B01D3/14;C07C51/44;C07C57/04;C07C51/353;B01D3/36;C07C51/42;B01D3/34 |
主分类号 |
B01D3/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for producing an acrylate product, the process comprising the steps of:
(a) providing a crude product stream comprising: acrylate product comprising from 5 wt % to 50 wt % acrylic acid; from 0.5 wt % to 50 wt % of at least one alkylenating agent comprising formaldehyde and/or precursors thereof; from 5 wt % to 50 wt % acetic acid; and from 1 wt % to 60 wt % water; (b) separating at least a portion of the crude product stream to form an alkylenating agent stream comprising at least 1 wt % alkylenating agent, and an intermediate acrylate product stream comprising acrylate product, and (c) separating the intermediate product stream to form a finished acrylate product stream comprising at least 85 wt % acrylic acid, wherein step (b) is performed in at least one column having an operating pressure ranging from 40 kPa to 80 kPa. |
| 地址 |
Dallas TX US |
