Processo para remover contaminantes ácidos e hidrocarbonetos de uma corrente de alimentação gasosa, dispositivo, e, processo para liquefazer o gás natural.

摘要

The present invention concerns a process for removing acidic contaminants and C2+-hydrocarbons from a feed gas stream (1) containing methane and acidic contaminants and C2+-hydrocarbons, the process comprising cooling (2) the feed gas stream to a temperature at which solid acidic contaminants are formed and a liquid comprising C2+-hydrocarbons and acidic contaminants as well as a methane enriched gaseous phase, separating (3) a gaseous stream (5) from the solids and liquid, introducing solids and liquid in the upper part of a separation/washing zone (4), the separation/washing zone comprising a downwardly moving bed of solids and removing solids at the lower end of the separation/washing zone, separating liquid from the solids through one or more openings (9) at a position between the upper part and the lower end of the separation/washing zone, and introducing at a position below the one or more openings an upwardly moving washing liquid.