Katalytisches Verfahren zur Herstellung von flüssigen Kohlenwasserstoffen aus Erdgas.

摘要

Process for the production of liquid hydrocarbons from natural gas, characterised in that: a) the natural gas is separated in (2) into at least two fractions, a first fraction of the gas enriched in methane and a second fraction enriched in C2<+> alkanes, b) the methane is selectively oxidised (7a) by molecular oxygen in the presence of a catalyst for the oxidising coupling of the methane, c) the fraction enriched in C2<+> alkanes is mixed, at least in part, with the effluent from the selective oxidation stage when at least 80 % of the molecular oxygen introduced in Stage (b) has already been consumed in Stage (b), d) the mixture resulting from Stage (c) is pyrolysed in (7b), e) after having brought the temperature of the mixture from Stage (d) to a temperature between 300 DEG C and 750 DEG C and more particularly between 450 DEG C and 600 DEG C, the olefins are converted in (11d) and/or (11c), at least in part, to aromatic compounds in the presence of an aromatisation catalyst.