公开(公告)号：US20020198428A1

公开(公告)日：2002-12-26

申请号：US10184888

申请日：2002-07-01

Applicant: SNAMPROGETTI S.p.A.

Inventor： Rodolfo Iezzi ,  Andrea Bartolini ,  Franco Buonomo

IPC: C07C005/327 ,  C07C005/32 ,  C07C005/333

CPC classification number: B01J23/96 ,  B01J8/0055 ,  B01J8/26 ,  B01J23/62 ,  C07C5/3337 ,  Y02P20/584 ,  C07C11/02

Abstract: A process for preparing light olefins from corresponding paraffins consists of reacting said paraffins in a reactor, operating at a temperature of between 450 and 800null C., a pressure of between 0.1 and 3 atm absolute and a GHSV of between 100 and 10000 hnull1, with a catalytic system containing gallium, platinum, possibly one or more alkaline or alkaline-earth metals, and a support consisting of alumina in delta or theta phase or in deltanulltheta or thetanullalpha or deltanullthetanullalpha mixed phase, modified with silica, the gallium, expressed as Ga2O3, being in a quantity of between 0.1 and 33.6 wt %, the platinum being in a quantity of between 1 and 99 ppm, the alkaline or alkaline-earth metals, expressed as oxide, being in a quantity of between 0 and 5 wt %, and the silica being in a quantity of between 0.08 and 3 wt %, the rest to 100% being alumina, and regenerating said catalytic system in a regenerator by burning off the coke which has deposited on its surface, without subsequently reducing it.

Abstract translation: 从相应的链烷烃制备轻质烯烃的方法包括在反应器中使所述链烷烃反应，在450-800℃的温度下操作，绝对压力为0.1至3atm，GHSV为100至10000h- 1，含有镓，铂，可能一种或多种碱金属或碱土金属的催化体系，以及由δ或θ相中的氧化铝或δ+θ或θ+α或δ+θ+α混合相组成的载体 ，用二氧化硅改性，以Ga 2 O 3表示的镓的量为0.1至33.6重量％，铂的量为1至99ppm，碱或碱土金属以氧化物表示，为 其量为0至5重量％，二氧化硅的量为0.08至3重量％，其余为100重量％的氧化铝，并通过烧掉已沉积的焦炭在再生器中再生所述催化体系 在其表面，没有随后减少 把它。