公开(公告)号：US06262314B1

公开(公告)日：2001-07-17

申请号：US09286722

申请日：1999-04-06

申请人： Leonardo Escalante ,  Jose Castor Gonzalez ,  Zaida Hernandez

发明人： Leonardo Escalante ,  Jose Castor Gonzalez ,  Zaida Hernandez

IPC分类号： C07C4101

CPC分类号： B01D3/009 ,  C07C41/06 ,  C07C41/42 ,  Y02P20/127 ,  Y10S203/06 ,  C07C43/046

摘要： A process for preparing ethers includes the steps of: providing a feedstock containing iso-olefins selected from the group consisting of C5 iso-olefins, C6 iso-olefins and mixtures thereof; mixing the feedstock with alkyl alcohol so as to provide a reaction feedstock, feeding the reaction feedstock to a reactor zone in the presence of a first etherification catalyst whereby the alkyl alcohol reacts with the iso-olefins to form alkyl-tert-alkyl ethers so as to provide an intermediate feedstock containing the ethers and unreacted iso-olefins and alkyl alcohol; feeding the intermediate feedstock to a catalytic distillation column having a second etherification catalyst defining a catalytic zone; mixing additional alkyl alcohol to the intermediate feedstock so as to form azeotropes of the alkyl alcohol with the unreacted iso-olefins without forming azeotropes of the alkyl alcohol with the ethers whereby the catalytic zone is substantially free of the ethers and the unreacted iso-olefins react with said alkyl alcohol in the catalytic zone to form additional alkyl-tert-alkyl ethers.

摘要翻译： 制备醚的方法包括以下步骤：提供含有选自C5异烯烃，C6异烯烃及其混合物的异烯烃的原料; 将原料与烷基醇混合以提供反应原料，在第一醚化催化剂存在下将反应原料进料到反应器区域，由此烷基醇与异烯烃反应形成烷基 - 叔烷基醚，以便 提供含有醚和未反应的异烯烃和烷基醇的中间原料; 将中间原料进料到具有限定催化区的第二醚化催化剂的催化蒸馏塔; 将另外的烷基醇混合到中间体原料中，以便与未反应的异烯烃形成烷基醇的共沸物，而不形成烷基醇与醚的共沸物，由此催化区基本上不含醚，未反应的异烯烃反应 所述烷基醇在催化区中形成另外的烷基 - 叔烷基醚。