Provided is a process for converting methane at a remote natural gas site
into ethylene and other products. Methane is converted into syngas which is converted
into a low-sulfur liquid hydrocarbon mixture containing less than 1 ppm sulfur
via Fischer-Tropsch (FT) syntheses. The low-sulfur Fischer-Tropsch liquids are
transferred from the remote site to an existing facility where a sulfur-containing
compound or a sulfur-containing hydrocarbon mixture is added to avoid coking problems.
The resultant blend of hydrocarbons which has a sulfur content of at least 1 ppm,
is fed to a naphtha cracking unit and ethylene recovered.