公开(公告)号：US20080182996A1

公开(公告)日：2008-07-31

申请号：US11572711

申请日：2006-06-30

申请人： Gunther Windecker ,  Alexander Weck ,  Michael Steiniger ,  Jan Peter Bredehoft ,  Bianca Bender ,  Peter Knappik ,  Dany Vanden Hautte ,  Bernard Pierre ,  Beatrix Haffner

发明人： Gunther Windecker ,  Alexander Weck ,  Michael Steiniger ,  Jan Peter Bredehoft ,  Bianca Bender ,  Peter Knappik ,  Dany Vanden Hautte ,  Bernard Pierre ,  Beatrix Haffner

IPC分类号： C07D307/33 ,  C07C27/06

CPC分类号： B01D53/1487 ,  B01D3/343 ,  B01D53/1418 ,  B01D53/1425

摘要： The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

摘要翻译： 本发明涉及从包含马来酸酐的气流中分离马来酸酐的方法，其中a）包含马来酸酐的气流与包含至少一种用于马来酸的高沸点惰性吸收介质的液体吸收相接触 酸酐和b）通过用含氢气体作为柱中的汽提介质汽提将马来酸酐与所得的液体吸收相分离，其中在柱上的两点加料汽提介质是至少一个理论塔板 分开