Reaction system and process for preparing polymethoxy dimethyl ether
文献类型：专利
| 作者 | Chen J(陈静) ; Song HY(宋河远); Xia CG(夏春谷); Kang MR(康美荣)
|
| 发表日期 | 2015-10-27 |
| 专利国别 | 美国 |
| 专利号 | US 9168503 B2 |
| 专利类型 | 发明 |
| 权利人 | Suzhou OST Advanced Materials Co., Ltd ; Lanzhou Institute of Chemical Physics, Chinese Academy of Science |
| 英文摘要 | The invention relates to a reaction system and process for continuously preparing polymethoxy dimethyl ether (DMM3-8) by a continuous acetalization reaction between an aqueous formaldehyde solution or paraformaldehyde and methanol in the presence of a functionalized acidic ionic liquid as a catalyst. The reaction system of the invention preferably comprises a formaldehyde-concentrating unit, a vacuum-drying unit, an acetalization reaction unit, a product-separating unit and a catalyst-regenerating unit. The process of the invention uses aqueous formaldehyde solution as an initial raw material, which is concentrated in the formaldehyde-concentrating unit to a concentrated formaldehyde of 50.about.80 wt. %, and vacuum-dried to paraformaldehyde, or uses paraformaldehyde as raw material directly, then obtains DMM3-8 by an acetalization reaction. The raw materials of the reaction used in the invention are cheap and available easily, and the utilization rate of formaldehyde is high; an efficient separation between the catalyst and product, as well as the reuse of the catalyst and raw materials, are realized by a separation mode of combining extraction and rectification together. |
| 学科主题 | 物理化学与绿色催化 |
| 公开日期 | 2016-02-26 |
| 申请日期 | 2013-09-29 |
| 语种 | 英语 |
| 源URL | [http://210.77.64.217/handle/362003/19096]  |
| 专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
| 作者单位 | Lanzhou Institute of Chemical Physics, Chinese Academy of Science |
| 推荐引用方式 GB/T 7714 | Chen J,Song HY,Xia CG,et al. Reaction system and process for preparing polymethoxy dimethyl ether. US 9168503 B2. 2015-10-27. |
入库方式： OAI收割
来源：兰州化学物理研究所
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