TH3735B - Process for the production of hydrocarbons - Google Patents

Abstract

To prepare hydrocarbons from synthetic gas on Co/Zr/SiO2 catalysts. The figure is prepared by diffusion and/or kneading the catalyst into a stationary bed, providing a given relationship between the external (Se) and internal (Si) surfaces in order to have C+5. high selectivity Bed catalysts should have Se (between 5 and 70 m²/mL) and Si (between 10 and 400 m²/mL), as given the following relation: 106 less than Se2 x Si > 2.5 x 104.

Claims (9)

1. Process for the preparation of hydrocarbons by catalytic reactions of carbon monoxide with hydrogen. that exhibits the nature of exposing the carbon oxide and hydrogen mixture to the catalyst at high temperature and pressure. Catalysts have 3-60 cobalt. section by weight and at least one other metal selected from 0.1-100 parts by weight of cherconium, titanium and chromium per silica, alumina or silica-alumina. This catalyst was prepared by kneading and/or diffusion indicating that the catalyst exists as a stationary bed. and that bed catalysts have an outer surface area (Se) between 5 and 70 square centimeters/mm. and internal surface area (Si) between 10 and 400 square meters/ml. As the relation 106 > Se2 x Si > 2.5 x 104 2. The process as claimed in Claim 1, showing that the bed catalyst has a Se between 10 and 50 sq cm/mL and a Si between 15 and 200 sq m/mL. As to give a relation 2.5 x 105 is less than Se2 x Si > 3 x 104. 3. The process as claimed in claims 1 or 2 characterizing that the catalyst gives a relationship (chemical formula) L = total amount of cobalt present on the catalyst. expressed in milligrams of Co/mL, Si = internal surface area of the catalyst, expressed in square meters/mL, and R = weight ratio between the amount of cobalt administered to the catalyst by massage. and the total amount of cobalt present on the catalyst 4. Processes as claimed in one of Claims 1-3 that characterize that the catalyst contains 15-50 parts by weight of cobalt per 100 parts by weight of the substrate. and other metals 0.1-5 parts by weight If in preparation, cobalt is added first and then another metal or another metal is 5-40 parts by weight. If in preparation, another metal is added first and then cobalt. 5. The process as claimed in one of Claims 1-4 that characterizes the catalyst as having zirconium as another metal and silica as a backing. 6. Processes as claimed in one of Claims 1-5 that characterize that the process is performed at 125-350 °C and at a pressure of 5-100 bar. 7. The process, as claimed in one of Claims 1-6, characterizing that the H2/CO mixture has a molar ratio of H2/CO between 1.75 and 2.25. 8. A process as claimed in one of Claims 1-7 that characterizes the preparation of a centralized distillate from a product prepared on at least that part of the cobalt catalyst where It has an initial boiling point higher than the final boiling point of the heaviest central distillate intended to be the end product. It is subjected to hydrocracking by exposing this part to the catalyst here, one or more noble metals of Group VIII on a substrate at high temperature and pressure. 9. The process, as claimed in Claim 8, characterizing that in the hydrocracking process, catalysts containing one or more noble metals of group VIII0.1-2% are used by Weight 1 0. The process as claimed in one of Claims 8-9 that characterizes that in the hydrocracking process uses a platinum-containing catalyst. or palladium is a noble metal of group VIII and silica-alumina is a supporting agent.