PROCESS AND PLANT FOR PRODUCING HYDROCARBONS FROM A GAS COMPRISING CO2

A process for producing a hydrocarbon stream comprising hydrocarbons boiling in the jet fuel range, said process comprising: a) passing a synthesis gas (syngas) stream comprising a carbon oxide and hydrogen over a fixed bed comprising a dual-function catalyst active in the conversion of syngas to the oxygenate(s) methanol (MeOH) and/or dimethyl ether (DME), and the conversion of said oxygenate(s) to an olefin product stream; wherein the dual-function catalyst comprises: a MeOH synthesis catalyst, in which the MeOH synthesis catalyst is a Cu and Cr-free catalyst comprising an oxide of Zn in combination with an oxide of any of: Zr, Al, Si, Ti, Ce, La, Ga, In, Mo, Mn, Mg, Y, or combinations thereof; and an oxygenate conversion catalyst comprising a zeolite with a framework having a 10-ring pore structure, in which the 10-ring pore structure comprises a unidimensional (1-D) pore structure selected from any of: *MRE (ZSM-48), MTT (ZSM-23), TON (ZSM-22), or combinations thereof; b) passing at least a portion of the olefin product stream through an oligomerization step over an oligomerization catalyst, and optionally subsequently conducting a separation step, for thereby producing an oligomerized stream; c) passing at least a portion of the oligomerized stream through a hydrogenation step over a hydrogenation catalyst, and optionally subsequently conducting a separation step, for thereby producing said hydrocarbon stream comprising hydrocarbons boiling in the jet fuel range, optionally also comprising hydrocarbons boiling in the diesel fuel range. The invention provides also a plant for conducting the process. La présente invention concerne un procédé de production d'un flux d'hydrocarbures comprenant des hydrocarbures dont le point d'ébullition se situe dans la plage de carburéacteur, ledit procédé comprenant les étapes consistant à : a) faire passer un flux de gaz de synthèse (syngaz) comprenant un oxyde de carbone et de l'hydrogène sur un lit fixe comprenant un catalyseur à double fonction actif dans la conversion de syngaz en composé(s) oxygéné(s) méthanol (MeOH) et/ou diméthyléther (DME), et convertir ledit ou lesdits composé(s) oxygéné(s) en un flux de produit oléfinique ; le catalyseur à double fonction comprenant : un catalyseur de synthèse MeOH, le catalyseur de synthèse MeOH étant un catalyseur exempt de Cu et de Cr comprenant un oxyde de Zn en combinaison avec un oxyde choisi parmi l'un quelconque de : Zr, Al, Si, Ti, Ce, La, Ga, In, Mo, Mn, Mg, Y ou d