| 专利名称 | Method for synthesizing polyoxymethylene dimethyl ethers catalyzed by an ionic liquid | 申请号 | US201113154359 | 专利类型 | US | 公开（公告）号 | US8816131(B2) | 公开（授权）日 | 2014.08.26 | 申请（专利权）人 | 中国科学院兰州化学物理研究所 | 发明（设计）人 | Chen Jing;Song Heyuan;Xia Chungu;Li Zhen | 主分类号 | C07C41/58 | IPC主分类号 | C07C41/58;C07C41/50;C07C41/56 | 专利有效期 | Method for synthesizing polyoxymethylene dimethyl ethers catalyzed by an ionic liquid 至Method for synthesizing polyoxymethylene dimethyl ethers catalyzed by an ionic liquid | 法律状态 | 说明书摘要 | It is related to a method for preparing polyoxymethylene dimethyl ethers by a continuous acetalation reaction of trioxymethylene and methanol or methylal catalyzed by an ionic liquid. The processing apparatus used in the method includes a reaction zone, a separation zone, a catalyst regeneration zone and a product dehydration zone. A manner of circulating tubular reaction is used, resulting in a high external heat exchange efficiency, a simple structure of design and a low investment. A film evaporator is used, realizing a rapid separation and recycling of the light component, with a high separation efficiency. The separation of the catalyst solution from the crude product is simple, thereby realizing the regeneration and recycling of the catalyst. |
1、源头对接，价格透明
2、平台验证，实名审核
3、合同监控，代办手续
4、专员跟进，交易保障