| 摘要 |
Preparation of at least one final product by partial oxidation and/or ammoxidation of propylene, comprises subjecting a purified propane to dehydrogenation; separating optionally the gas mixture containing propane and propylene, and simultaneously producing a propane and propylene containing gas mixture (II); subjecting the gas mixtures in heterogeneous catalyzed gasphase-partial oxidation, where a gas mixture (III) containing at least one final product is obtained; separating the gas mixture (III) and leading back at least propane in the remainder gas in the first reaction step. Preparation of at least one final product by partial oxidation and/or ammoxidation of propylene, comprises subjecting a propane, which is first purified in a first reaction step in the presence and/or absence of oxygen, to dehydrogenation comprising homogeneous dehydrogenation, heterogeneously catalyzed dehydration, homogeneous oxide-hydrogenation and heterogeneously catalyzed oxide-hydrogenation, where the non-reacted propane and formed propylene containing gas mixture (I) is obtained; separating optionally the total quantity or partial quantity of the gas mixture containing propane and propylene of different components and/or changing into other compounds, and simultaneously producing a propane and propylene containing gas mixture (II); subjecting the gas mixture (I) or (II), or a gas mixture, which is a mixture of formed gas mixture (II) and remained gas mixture (I) in heterogeneous catalyzed gasphase-partialoxidation and/or partial gasphase-ammoxidation of the gas mixture (I) and/or (II), where a gas mixture (III) containing at least one final product is obtained; and separating the gas mixture (III) and leading back at least propane in the remainder gas in the first reaction step, where the propane is pre-purified from raw propane, which contains >=90 wt.% of propane, =99 wt.% of propane and propylene, >=100 wt.% of 2C-hydrocarbon and >=100 wt.% of 4C-hydrocarbon, with the standard, that the raw propane leads to rectification column and takes place over the supply place of the purified propane, where the concentration of 2C-hydrocarbon of propane contained in the purified propane amounts to not more than 80 wt.% based on the content of raw propane and the concentration of 4C-hydrocarbon of propane contained in the purified propane amounts to a maximum of 50% based on the content of the raw propane. |
