公开(公告)号：US20160168307A1

公开(公告)日：2016-06-16

申请号：US14965571

申请日：2015-12-10

申请人： Dongfang Hongsheng New Energy Application Technology Research Institute Co., Ltd ,  Jiangsu Kaimao Chemical Technology Co., Ltd ,  China University Of Petroleum (Eastern China)

发明人： Hongyan SHANG ,  Zhengpeng HONG ,  Zimao YE ,  Jiayong XIANG ,  Zhenzhen XUE

IPC分类号： C08G16/02

CPC分类号： C08G2/04 ,  C08G2/06 ,  C08G2/08 ,  C08G2/34

摘要： The present invention pertains to the technical field of energy resource chemical industry, and in particular relates to a process for producing polyoxymethylene dimethyl ethers by directly using concentrated formaldehyde aqueous solution as feedstock to catalytically react with methanol and/or methylal in a fixed bed reactor. The method of the present invention uses concentrated formaldehyde aqueous solution with a concentration of over 80% by weight to react with methanol and/or methylal, in the presence of an acidic catalyst, to produce the required polyoxymethylene dimethyl ethers. As compared with using paraformaldehyde powder as feedstock, the method of the present invention accelerates the depolymerization process of paraformaldehyde, thus significantly reduces the time required for product synthesis and makes the synthesis reaction able to be carried out in a fixed bed reactor; meanwhile, as compared with using formaldehyde aqueous solution with a low concentration as feedstock, the method of the present invention also significantly increases the yield rate of the target product.

摘要翻译： 本发明涉及能量化学工业的技术领域，特别涉及通过直接使用浓缩甲醛水溶液作为原料在固定床反应器中与甲醇和/或甲缩醛进行催化反应来生产聚甲醛二甲醚的方法。 本发明的方法使用浓度超过80重量％的浓甲醛水溶液与甲醇和/或甲缩醛在酸性催化剂存在下反应，生成所需的聚甲醛二甲醚。 与使用多聚甲醛粉末作为原料相比，本发明的方法加速了多聚甲醛的解聚过程，从而显着减少了产物合成所需的时间，使合成反应能够在固定床反应器中进行; 同时，与使用低浓度的甲醛水溶液作为原料相比，本发明的方法也显着提高了目标产物的产率。