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OwnerThomas Hill, Mathias Haake +3inventors
InventorsThomas Hill, Mathias Haake, Ekkehard Schwab, Andrea Frenzel, Helmut Worz
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Alkynes, dienes, alkenynes and/or polyenes in an olefin-containing hydrocarbon stream are selectively hydrogenated catalytically in the gas phase in at least two reaction zones connected in series without introduction of part of this hydrocarbon stream between the penultimate reaction zone and the last reaction zone, wherein the hydrogen content in the reaction gas mixture upstream of the penultimate reaction zone and the degree of conversion in the penultimate reaction zone are set so that the reaction gas mixture contains at least 0.7% by volume of hydrogen at the outlet of the penultimate reaction zone.
A process for the selective catalytic gas-phase hydrogenation of alkynes, dienes, alkenynes and/or polyenes in an olefin-containing hydrocarbon stream in at least two reaction zones connected in series without introduction of part of this hydrocarbon stream between the penultimate reaction zone and the last reaction zone, wherein the hydrogen content in the reaction mixture upstream of the penultimate reaction zone and the degree of conversion in the penultimate reaction zone are set so that the reaction mixture contains at least 0.7% by volume of hydrogen at the outlet of the penultimate reaction zone.
Dependencies are inferred from the claim text.