公开(公告)号：US6019887A

公开(公告)日：2000-02-01

申请号：US195856

申请日：1998-11-19

申请人： Maria M. Ramirez de Agudelo ,  Julia T. Guerra ,  Douglaines L Marcano ,  Zaida Hernandez

发明人： Maria M. Ramirez de Agudelo ,  Julia T. Guerra ,  Douglaines L Marcano ,  Zaida Hernandez

IPC分类号： B01D15/00 ,  B01J20/18 ,  B01J20/34 ,  C07C7/12 ,  C10G25/00 ,  C10G25/03 ,  C10G25/05 ,  C10G25/12

CPC分类号： C07C253/34 ,  B01D15/00 ,  B01J20/183 ,  C10G25/05

摘要： An adsorption/desorption process for selectively removing nitriles from a hydrocarbon feedstock includes the steps of: (a) providing a hydrocarbon feedstock having a nitrile content of less than or equal to about 400 ppm; (b) providing an adsorbent for selective removal of nitrile from a hydrocarbon feedstock comprising a substantially homogeneous mixture of a cationic nonacidic zeolite and an inorganic oxide matrix, the zeolite having an accessibility index of between about 0.1 to about 0.4; (c) contacting the feedstock and the adsorbent at nitrile adsorption conditions whereby at least about 80% of the nitrile content is adsorbed by the adsorbent during contact with at least about 200 volumes of the feedstock per volume of the adsorbent so as to provide a used adsorbent having nitrile molecules adsorbed thereon; and (d) contacting the used adsorbent with a desorbent at desorption conditions so as to remove the nitrile molecules and provide a renewed adsorbent.

摘要翻译： 用于从烃原料中选择性除去腈的吸附/解吸方法包括以下步骤：（a）提供腈含量小于或等于约400ppm的烃原料; （b）提供用于从包含阳离子非酸性沸石和无机氧化物基质的基本均匀的混合物的烃原料中选择性除去腈的吸附剂，所述沸石的可接近指数为约0.1至约0.4; （c）在腈吸附条件下使原料和吸附剂接触，由此至少约80％的腈含量在与至少约200体积的原料/体积的吸附剂接触期间被吸附剂吸附，从而提供使用过的 吸附有腈分子的吸附剂; 和（d）在脱附条件下使用的吸附剂与解吸剂接触，以除去腈分子并提供更新的吸附剂。