| 摘要 |
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-butan e 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 secon d 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.
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