Abstract:
The present invention pertains to a reactor tube comprising a fixed bed of Fischer-Tropsch catalyst particles, wherein the catalyst particles in 5% to 40% of the fixed bed volume at the upstream end have an average outer surface to volume ratio (S/V) in the range of between 3.0 to 4.5 mm -1 , and the catalyst particles in the remaining fixed bed volume have an average outer surface to volume ratio (S/V) in the range of between 4.5 to 8.0 mm -1 , and wherein the difference between the average S/V of the particles at the upstream end and the average S/V of the particles in the remaining fixed bed volume is at least 0.5 mm -1 .
Abstract:
A process for regenerating one or more deactivated cobalt comprising Fischer-Tropsch catalyst particle (s) in situ in a reactor tube, said process comprising the steps of : (i) oxidising the catalyst particle(s) at a temperature between 20 and 400 °C; (ii) treating the catalyst particle (s) for more than 5 minutes with a solvent, (iii) drying the catalyst particle (s); and (iv) optionally reducing the catalyst with hydrogen or a hydrogen comprising gas. This process may be preceded by a step in which Fischer-Tropsch product is removed from the catalyst particle(s).
Abstract:
The invention concerns a process for preparing a chlorine comprising catalyst using one or more metal salts of chloride, hydrochloric acid (HCl), one or more organic chloride compounds, or a combination thereof. The prepared catalyst preferably comprises 0.13 –3weight percent of the element chlorine. The invention further relates to the prepared catalyst and its use.
Abstract:
The invention relates to a method to start up a Fischer-Tropsch process. A catalyst with a latent activity is used. The catalyst comprises titania, cobalt, promoter, and chlorine. The catalyst comprises more than 0.7 and less than 4 weight percent of the element chlorine, calculated on the total weight of the catalyst.
Abstract:
The invention relates to a method for preparing a catalyst or catalyst precursor comprising a catalytically active material and a carrier material. The invention relates to a catalyst particle and catalyst precursor thereof obtainable by said method. The catalyst may be used in a process for synthesising hydrocarbons.
Abstract:
The invention concerns a process for preparing a chlorine comprising catalyst by (a) providing a Fischer-Tropsch catalyst comprising titania and at least 5 weight percent cobalt; (b) impregnating the catalyst with a solution comprising chloride ions;and (c) heating the impregnated catalyst at a temperature in the range of between 100 and 500 °C for at least 5 minutes up to 2 days. The prepared catalyst preferably comprises 0.13 –3 weight percent of the element chlorine. The invention further relates to the prepared catalyst and its use.