| 摘要 |
<p>The invention relates to a method for the production of butadiene from n-butane comprising the steps: (a) preparation of a gas feedstream containing n-butane, (b) feeding the gas feedstream containing n-butane into a first dehydrogenation zone with non-oxidative catalytic dehydrogenation of n-butane to give 1-butene, 2-butene and optionally butadiene, whereby a first gas product stream comprising n-butane, 1-butene, 2-butene, optionally butadiene and optionally by-products is obtained, (c) feeding the first gas product stream comprising n-butane, 1-butene, 2-butene, optionally butadiene and optionally by-products into a second dehydrogenation zone with oxidative dehydrogenation of 1-butene and 2- butene to give butadiene, whereby a second gas product stream is obtained comprising butadiene, n-butane, steam and optionally by-products and (d) recovery of butadiene from the second gas product stream.</p> |
