The raw natural gas extracted from the well head contains many impurities. These may cause corrosion within the tubes of reformers and are known to poison the catalyst, therefore must be removed in natural gas reforming plants.
Within natural gas reforming plants, heavy non-methane hydrocarbons and impurities, such as mercury and nitrogen, are removed from the raw natural gas. The result, is a pipeline quality natural gas containing mostly methane, which can now be processed in the presence of a catalyst in the production of hydrogen, methanol and ammonia.