63results about How to "High Hydrodenitrogenation Activity" patented technology

The invention is a method for producing catalytic reforming raw material, cutting secondary gasoline raw material into light gasoline fraction, medium gasoline fraction and heavy gasoline fraction, where the medium gasoline fraction, optional virgin naphtha and hydrogen gas contact with first hydrofining catalyst to make alkene saturated reaction, the resultant effluent is not separated but directly contacts with second hydrofining catalyst to make hydrodesulfurization and hydro- denitrogenation reactions, and the extracted hydrogen-enriched gas is recycled and the extracted liquid enters a distillation dehydrating tower and is purified to obtain naphtha. And it can process secondary gasoline with high sulfur, nitrogen and alkene contents, and provides qualified raw material with sulfur and nitrogen contents both less than 0.5 mug / g for catalytic reforming.

The process of treating hydrogenation catalyst before application includes introducing organic solvent and sulfur containing matter into the hydrogenation catalyst in oxide state, and the subsequent treating in dynamic heating equipment under certain conditions. The hydrogenation catalyst with introduced sulfur containing matter, such as element sulfur, has raised sulfur containing matter utilization rate, smooth temperature raising in the catalyst bed, raised catalyst activity and other features. The method of the present invention may be applied for various kinds of hydrogenation catalyst.

The present invention relates to hydrocarbon hydrocracking process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrocracking catalyst contains organic nitrogen compound in 0.5-20 wt% of the catalyst, simple substance sulfur in the amount of 30-150 % of the theoretical sulfur demand of the catalyst, and organic solvent in 0.1-50 wt% of the catalyst. Thehydrocracking catalyst with the common action of organic nitrogen compound, sulfur and organic solvent has high sulfur holding rate in activation, less concentrated heat release, lowered temperature rise in the catalyst bed and high activity. It may be applied in various kinds of hydrocarbon hydrocracking process.

The invention relates to a processing method before the application of hydrogenation catalyst, comprising the detailed process as follows: organic solvent and elemental sulfur are introduced in hydrogenation catalyst in oxidation state; subsequently, heating pre-processing is carried out under a certain condition; and the heating processing is carried out under the existence of water vapor. The processing method before the application of the hydrogenation catalyst loads the sulfur-contained matter such as elemental sulfur on the hydrogenation catalyst; a certain interaction is generated and little heat is discharged; and the added water vapor adjusts the interaction of the sulfur and the active composition of the catalyst, and improves the use performance of the catalyst. Compared with theprior art, the catalyst obtained by the method has the advantages of high utilization ratio of the sulfur-contained matter, gradual increment of the temperature of the catalyst bed and high activityof the catalyst when the activation is applied. The method can be used for processing before the application of various hydrogenation catalysts.