Linde Aktiengesellschaft

Karl Heinz Hofmann

Anton Wellenhofer

Nicole Schoedel

Axel Behrens

Hans Jorg Zander

Klaus Klapper

Roland Dittmeyer

Nicole SCHÖDEL

The invention relates to a process for preparing linear &#x3b1;-olefins, wherein ethyleneis conducted into the oligomerization reactorin the liquid phase. The oligomerization reactorhas a mechanical stirrerin order to ensure optimal mixing of the liquid ethylene and of the catalyst in the liquid phase. From the top of the oligomerization reactor, vaporized ethylene is drawn off together with light &#x3b1;-olefins and a small proportion of the organic solvent. The gas mixture drawn off from the top of the reactoris condensed together with gaseous fresh ethyleneby means of heat exchangerand separator. The liquid phase drawn off from the separatoris conducted by means of circulation pumpas liquid ethylene inputback into the oligomerization reactor. The liquid products of the oligomerization reaction are drawn offlaterally from the base of the reactor

Process for preparing linear &#x3b1;-olefins

The invention relates to a method and a device for generating hydrogen (), wherein an input () comprising carbon is fed longitudinally through a tube-shaped reaction chamber (Z), together with water steam (), and is thereby converted by steam reforming, and hydrogen () formed during steam reforming is continuously drawn off out of the reaction chamber (Z) through a separating wall (T), said wall being selectively hydrogen-permeable at least in segments, and at a pressure less than the pressure in the reaction chamber (Z) and greater than the ambient pressure, having greater purity than product (), characterized in that a separating wall (T) is used, the selectively hydrogen-permeability segments thereof being disposed such that a hydrogen partial pressure drop exists over the entire surface of each of such segments between the reaction chamber side and the hydrogen extraction side (W).

Method and device for generating hydrogen

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Germering, Germany

Karl Heinz Hofmann