NOVELTY - Liquid methanol condensate is produced from gaseous carbon monoxide (CO) and hydrogen (H2) feed or gaseous carbon dioxide (CO2), CO, and H2 feed involves producing liquid condensate in reactor having greater than or equal to 1 reaction zones and greater than or equal to 1 condensation zones in which condensation zones are operated at lower temperature than reaction zones, and there is convective mass exchange between reaction zones and condensation zones.    USE - Production of liquid methanol condensate from gaseous carbon monoxide and hydrogen feed or gaseous carbon dioxide, carbon monoxide, and hydrogen (claimed).    ADVANTAGE - The gaseous feed can be fully converted into liquid product containing methanol with high selectivity of reactants towards methanol. The process can be operated in continuous or semi-continuous way without purging part of the gaseous mixture inside the reactor to the environment, ensuring near complete carbon efficiency with only minor losses due to reactants dissolved in the liquid methanol and water condensate or in the liquid methanol condensate. Capital and operational costs are reduced because convective mass exchange by natural convection does not require a part for forced circulation.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for reactor (1) for preparation of liquid condensate product from gaseous mixture comprising housing (2); inlet (3) for feeding gaseous mixture to housing; greater than or equal to 1 reaction zones (4) inside the housing covering only part of the cross-sectional area of plane (5) perpendicular to vertical axis (6) of the housing and greater than or equal to 1 tubes (7) covering at least part of cross-sectional area of the plane not covered by reaction zones, where reaction zones and tubes are separated by walls (8) parallel to vertical axis of the housing, and the walls (8) do not reach to the top (9) and bottom (10) of the housing; greater than or equal to 1 condensation zones (11) inside the housing which are connected to reaction zones and tubes for convective mass exchange between reaction zones and tubes via condensation zones; recycling zone (12) inside the housing which is connected to reaction zones and tubes for convective mass exchange between tubes and reaction zones via recycling zone; catalyst bed (13) positioned in each of reaction zones; cooling part (14) positioned in each of condensation zones for producing liquid condensate product; receptacles (15) for collecting liquid condensate product and are positioned in the housing such that liquid condensate product formed by condensation in condensation zones cannot contact the catalyst bed; outlet (16) for removal of liquid product from receptacles inside the housing; and optionally, purge (17) for removal of gaseous components from the housing.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of schematic diagram of a reactor comprising more than one reaction zones and more than one condensation zones suitable for convective mass exchange by natural convection.    Reactor (1)    Housing (2)    Inlet for feeding gaseous mixture to housing (3)    Reaction zones (4)    Plane perpendicular to vertical axis (5)    Vertical axis (6)    Tubes covering the housing (7)    Walls (8)    Top of housing (9)    Bottom of housing (10)    Condensation zones (11)    Recycling zone (12)    Catalyst bed (13)    Cooling part (14)    Receptacles (15)    Outlet for removal of liquid product from receptacles (16)    Purge (17)