TH3222B - Process for preparing hydrocarbons - Google Patents

Abstract

Synthetic gas with a molar ratio of H2/CO between 0.75 and 1.75 is converted to hydrocarbons by giving it the same first contact with a special type of cobalt-containing finzertropps catalyst under such conditions. that the conversion is within a specified range that depends on the molar H2/CO ratio of the synthetic gas feed. and after After dehydrating and touching the components Active-containing catalysts for both hydrocarbon synthesis and CO(CO Shift), high H2+CO conversion in combination with high selectivity C5+. It can be obtained initially from synthetic gas with a molar ratio of H2/Co(F) between 0.75 and 1.75 by a two-step process as discussed above. Under conditions such that in the first step the relationship (chemical formula) is followed, where C is the change in molar H2+CO %.

Claims (1)

1. The process for preparing hydrocarbons by reacting using a carbon monoxide catalyst with hydrogen characterizing that the H2 and CO-containing feeders have a mole ratio of H2 / CO (F) in the range of 0.75 and 1.75. Touch the first step to a catalist containing 3-60 parts cobalt by weight. And at least one other metal selected from the group containing 0.1-100 parts zirconium, titanium and chromium Connect a substrate selected from 100 parts silica, alumina or silica-alumina by weight. The catalist is prepared by massage and / or diffusion. This exposure is made under conditions as it follows the correlation (formula) where C is the H2 + CO conversion expressed as% mole and where the product from the first step. After the resulting water has been removed at least H2 and CO which remains unchanged, are exposed in a second step to the catalyst or the catalyst aggregate, which, besides the active for Converting H2 and CO mixtures to hydrocarbons, there is also an activation for the conversion of H2 and CO mixtures to H2 and CO2 mixtures. 1st, showing the characteristic that at the first step a catalist is used, which is based on correlation (chemical formula) L = total amount of cobalt contained in the catalyst expressed in milligrams of CO / mL of the catalist C = surface area of the catalyst Shown in meters 2 / mL of catalyst R = weight ratio of the amount of cobalt attached to the substrate by massaging to the total amount of cobalt contained in the catalist 3. The process as claimed in Clause 1. Or 2, showing the characteristics that the first step uses a catalist consisting of 15-50 parts of cobalt by weight. And another metal 0.1-5 parts by weight If during the preparation the cobalt is attached first and the other metal is attached to it next. Or another metal, 5-40 parts by weight If, in preparation, another metal binds first and cobalt binds next to a support agent 100 by weight 4. The process, as it is, holds the right to any of the claims 1-3 that characterize. That in the first step, a catalyst containing zirconium was used as another metal. 5. The process, as it holds in one of Claims 1-4, characterizes that the product from the first step will be divided by cooling into the constituent parts. Gases mainly composed of H2 and non-CO, and hydrocarbons with less than four carbon atoms per hydrocarbon molecule (C4), and the liquid part that mainly contains hydrocarbons with a higher carbon atom count. 5 atoms per hydrocarbon molecule (C + 5) and water, and that the gaseous part will be used as a feeder for the second step.6.Process as it holds the rights to either of the claim No. 1. -5 showing the characteristic that in the second step the catalyst aggregate is used, where the activity for the conversion of H2 / CO mixtures to hydrocarbons is formed by cobalt catalyst, as described in Claim No. 1 7. Process, as it is, in Clause 6, characterizing that in the second step, two catalyst mixtures are used. One catalist is a cobalt catalist, as described in Clause 1, and another catalist is a copper and zinc-containing component with a Cu / Zn atomic ratio in the range of 0.1 and 10 8. Process, as claimed in Clause 7, characterizes that these two catalysts are contained in a catalyst mix. In the ratio that the atomic ratio (Cu + Zn) / CO in the catalyst mixtures is between 0.5 and 5. 9. The process, as provided by Claim No. 7 or 8, characterizes that Copper and zinc-containing components have a Cu / Zn atomic ratio in the range between 0.25 and 4 1 0. The process, as it assumes, is in one of the claims 1-9 that characterizes how the process performed. At a temperature of 125-350 C. And a pressure of 5-100 bar 1 1. Process hydrocarbons as described in Claims 1-10.