公开(公告)号：US20090105512A1

公开(公告)日：2009-04-23

申请号：US11990401

申请日：2006-08-09

申请人： Zaiku Xie ,  Juntao Liu ,  Siqing Zhong ,  Wenwei Wu

发明人： Zaiku Xie ,  Juntao Liu ,  Siqing Zhong ,  Wenwei Wu

IPC分类号： C07C4/02

CPC分类号： C07C4/06 ,  C07C4/02 ,  Y02P20/52 ,  Y02P20/584 ,  C07C11/02 ,  C07C11/06 ,  C07C11/04

摘要： The present invention provides a process for producing lower olefins. The technical problem mainly addressed in the present invention is to overcome the defects presented in the prior art including high reaction pressure, high reaction temperature, low yield and selectivity of lower olefins as the target products, poor stability and short life of catalyst, and limited suitable feedstocks. The present process, which is carried out under the conditions of catalytic cracking olefins and adopts as a feedstock an olefins-enriched mixture containing one or more C4 or higher olefins and optionally an organic oxygenate compound, comprises the steps of: a) letting the feedstock contact with a crystalline aluminosilicate catalyst having a SiO2/Al2O3 molar ratio of at least 10, to thereby produce a reaction effluent containing lower olefins; and b) separating lower olefins from the reaction effluent; wherein, the reaction pressure is from −0.1 MPa to

摘要翻译： 本发明提供一种生产低级烯烃的方法。 本发明主要解决的技术问题是克服现有技术中存在的缺点，包括高反应压力，高反应温度，低产物和低级烯烃作为目标产物的选择性，稳定性差和催化剂寿命短等缺陷 合适的原料。 本发明方法在催化裂化烯烃的条件下进行，并采用含有一种或多种C 4或更高级烯烃和任选的有机含氧化合物的富含烯烃的混合物作为原料，包括以下步骤：a） 与SiO 2 / Al 2 O 3摩尔比为至少10的结晶硅铝酸盐催化剂接触，从而产生含有低级烯烃的反应流出物; 和b）从反应流出物中分离低级烯烃; 其中反应压力为-0.1MPa至<0MPa。 希望解决上述技术问题的本方法可用于低级烯烃的工业生产。