Shell Oil Comapny

Dirk Coenraad Engel

Bharat Lajjaram Bhatt

Edward Clyde Heydorn

Geert Van Der Honing

Matthijis Maria Gerardus Senden

The present invention concerns a process for the preparation of liquid hydrocarbons which process comprises contacting synthesis gas with a slurry of solid catalyst particles and a liquid in a reactor vessel by introducing the synthesis gas at a low level into the slurry at conditions suitable for conversion of the synthesis gas into liquid hydrocarbons, the solid catalyst particles comprising a catalytic active metal selected from cobalt or iron on a porous refractory oxide carrier, preferably selected from silica, alumina, titania, zirconia or mixtures thereof, the catalyst being present in an amount between 10 and 40 vol. percent based on total slurry volume liquids and solids, and separating liquid material from the solid catalyst particles by using a filtration system comprising an asymmetric filtration medium (the selective side at the slurry side), in which filtration system the average pressure differential over the filtration medium is at least 0.1 bar, in which process the particle size distribution is such that at least a certain amount of the catalyst particles is smaller than the average pore size of the selective layer of the filtration medium. The invention also comprises an apparatus to carry out the process described above.

Process for the production of liquid hydrocarbons

The present invention relates to a method for separating liquid from a slurry of solid particles and liquid contained in a vessel in the presence of a gas, which comprises degasifying the slurry and passing the degasified slurry through a cross-flow filter, and separating the degasified slurry into the liquid and a concentrated slurry. The present invention further relates to a process for the preparation of heavy hydrocarbons, which process comprises contacting a synthesis gas in a reactor vessel with a slurry of solid catalyst particles and a liquid, thereby producing heavy hydrocarbons, and separating the liquid containing heavy hydrocarbons from the slurry by the said method.

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Amsterdam, Netherlands

Dirk Coenraad Engel