Linde Aktiengesellschaft

Hans Jorg Zander

Anton Wellenhofer

Florian Winkler

Nicole Schodel

Roland Ritter

Karl Heinz Hofmann

Torsten Stoffregen

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

A process for removing impurities, in particular oxides of sulphur (SO) and/or oxides of nitrogen (NO) from oxygen-containing gas streams by scrubbing with at least one washing agent is described. In order to achieve effective gas purification in an economical manner even in the case of so-called large 'oxyfuel' furnaces which operate with oxygen as fuel gas, it is proposed to convert the impurities at an elevated pressure of at least 2 bar with at least one basic constituent of the washing agent into salts and to wash out said impurities as dissolved salts.

Method for removing impurities from gas flows comprising oxygen

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Munich, Germany

Hans Jorg Zander