A REACTION SYSTEM AND PROCESS FOR PREPARING POLYMETHOXY DIEMETHYL ETHER | |
Chen J(陈静); Song HY(宋河远); Xia CG(夏春谷); Kang MR(康美荣) | |
2016-05-10 | |
Rights Holder | SUZHOU OST ADVANCED MATERIALS CO., LTD., CN ; LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES, CN |
Date Available | 2015-03-29 |
Country | Canada |
Abstract | 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 50-80 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. |
Subject Area | 物理化学与绿色催化 |
Department | OSSO国家重点实验室 |
Application Date | 2014-03-18 |
Patent Number | CA 2847372 C |
Language | 英语 |
Status | 授权 |
Patent Agent | ROBIC |
Document Type | 专利 |
Identifier | http://ir.licp.cn/handle/362003/21702 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Affiliation | LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES, CN |
Recommended Citation GB/T 7714 | Chen J,Song HY,Xia CG,et al. A REACTION SYSTEM AND PROCESS FOR PREPARING POLYMETHOXY DIEMETHYL ETHER. CA 2847372 C[P]. 2016-05-10. |
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File Name/Size | DocType | Version | Access | License | ||
CA2847372C.pdf(1425KB) | 专利 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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