METHOD OF CONVERTING SYNTHESIS GAS USING COBALT CATALYST AT FIRST STEP AND SUPPORTED RUTHENIUM CATALYST AT SECOND STEP Russian patent published in 2015 - IPC C10G2/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of converting synthesis gas into hydrocarbons, which includes Fischer-Tropsch synthesis of hydrocarbons. A method of converting synthesis gas into hydrocarbons includes steps of: (i) passing synthesis gas including hydrogen and carbon monoxide through a cobalt catalyst at high temperature and pressure to produce a first reaction product mixture comprising hydrocarbons, steam, carbon monoxide and hydrogen, (ii) condensing and separating water from the first reaction product mixture to produce a dehydrated first reaction product mixture, (iii) passing the dehydrated first reaction product mixture containing hydrogen and carbon monoxide through a supported ruthenium catalyst at high temperature and pressure to produce a second reaction product mixture containing hydrocarbons, and (iv) recovering the hydrocarbons from the second reaction product mixture, where the first reaction step to obtain the first reaction product mixture is carried out temperature in the range of 210-225°C and pressure in the range of 1.0-3.0 MPa, and the second reaction step to obtain the second reaction product mixture is carried out at temperature in the range of 230-265°C and pressure in the range of 3.5-5.5 MPa.

EFFECT: C5+ hydrocarbon selectivity of 95% or higher, which characterises high output.

27 cl, 1 dwg, 1 tbl, 1 ex