Patent ID: 7144924

Claim:
A process for the continuous production of hydro-carbons from synthesis gas in a slurry reactors which comprises: a. continuously feeding to the bottom of a reactor for Fischer-Tropsch reactions, containing in suspension in the reaction product, a catalyst based on supported cobalt, and a synthesis gas comprising hydrogen and carbon monoxide; b. continuously discharging from a head of the reactor, a stream comprising light synthesis products in the vapour phase, and non-reacted reaction gas; c. continuously discharging from the reactor, a heavy reaction product comprising a liquid hydrocarbon phase; d. subjecting the heavy reaction product, before or after discharging, to a separation/filtration treatment using at least one filtration device consisting of a hydrocyclone over which there is a first hollow metal element, in which a second hollow element is situated, coaxial with the first, made of a material having a porous structure, with an average pore diameter ranging from 0.002 to 0.1 μm, suitable for micro/ultrafiltration to produce a filtered heavy reaction product; e. sending the filtered heavy reaction product, in liquid phase, having a content of fine or submicron particles lower than 5 ppm, to a subsequent treatment unit, or discharging it and cooling it to room temperature; f. recycling the solids coming from the separation/filtration step to the reactor.