Herein disclosed is a system for producing an organic, the system including at least one high shear mixing device having at least one rotor and at least one stator separated by a shear gap, wherein the shear gap is the minimum distance between the at least one rotor and the at least one stator; a pump configured for delivering a fluid stream comprising liquid medium and light gas to the at least one high shear mixing device, wherein the at least one high shear mixing device is configured to form a dispersion of the light gas in the liquid medium; and a reactor comprising at least one inlet and at least one outlet, wherein the at least one inlet of the reactor is fluidly connected to the at least one high shear mixing device, and wherein the at least one outlet is configured for extracting the organic therefrom.

Herein disclosed is a system for producing an organic, the system including at least one high shear mixing device having at least one rotor and at least one stator separated by a shear gap, wherein the shear gap is the minimum distance between the at least one rotor and the at least one stator; a pump configured for delivering a fluid stream comprising liquid medium and light gas to the at least one high shear mixing device, wherein the at least one high shear mixing device is configured to form a dispersion of the light gas in the liquid medium; and a reactor comprising at least one inlet and at least one outlet, wherein the at least one inlet of the reactor is fluidly connected to the at least one high shear mixing device, and wherein the at least one outlet is configured for extracting the organic therefrom.

A micro-spherical iron-based catalyst and a preparation method thereof are disclosed. The catalyst contains a potassium promoter, and at least one transitional metal promoter M which is one or more kinds of metals selected from Cr, Cu, Mn and Zn. It also contains a structure promoter S, which is SiO.sub.2 and/or Al.sub.2O.sub.3, wherein both of SiO.sub.2 and Al.sub.2O.sub.3 are modified by MoO.sub.3, TiO.sub.2 and/or ZrO.sub.2. The weight ratio of components is Fe:M:K:S=100:3-50:1-8:3-50, in which the metal components are calculated based on metal elements, the structure promoter is calculated based on oxides. The catalyst is prepared by co-precipitation method.

Hydrocarbon oil obtained by Fischer-Tropsch (FT) synthesis reaction using a catalyst within a slurry bed reactor is fractionated into a distilled oil and a column bottom oil in a rectifying column, part of the column bottom oil is flowed into a first transfer line that connects a column bottom of the rectifying column to a hydrocracker, at least part of the column bottom oil is flowed into a second transfer line branched from the first transfer line and connected to the first transfer line downstream of the branching point, the amount of the catalyst fine powder to be captured is monitored while the catalyst fine powder in the column bottom oil that flows in the second transfer line are captured by a detachable filter provided in the second transfer line, and the column bottom oil is hydrocracked within the hydrocracker.