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

A hydrogenation method for producing high-quality diesel oil and high-quality reforming materials comprises the following steps of: mixing diesel oil and/or a light wax oil material with hydrogen gas, and sequentially contact-reacting with a hydrorefining catalyst and a hydrocracking catalyst without middle separation, cooling the reaction result, and separating to obtain a light naphtha fraction, a heavy naphtha fraction, a kerosene fraction, a diesel oil fraction and a tail oil fraction, wherein the kerosene fraction and/or the tail oil fraction can be directly extracted or partially or completely recycled back to the reaction system. By adopting single-stage once-through process and a non-noble metal catalyst, the invention can produce the reforming materials with high aromatic content and the diesel oil fraction with high cetane number, wherein the yield of the reforming material is larger than 20wt%, and the cetane number of the diesel oil fraction can be improved by more than 15 units. The method provided by the invention has high operation flexibility and can flexibly adjust the technical scheme according to different raw materials and different product scheme requirements.

The process of treating hydrogenation catalyst before application includes making the hydrogenation catalyst in oxide state to support organic acid and/or organic nitrogen compound, organic solvent and element sulfur and treating in dynamic heating equipment. The hydrogenation catalyst with supported 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.

A process for treating the hydrocatalyst before it is used features that the organic solvent and sulfur-contained substance are introduced to the oxidation-state hydrocatalyst for higher activity.

The invention provides a catalyst for hydro-denitrification of inferior heavy distillate oil and a preparation method and application of the catalyst. The preparation method comprises the following steps of: performing surface acid treatment on aluminum oxide and an HY molecular sieve separately; mechanically compounding the aluminum oxide subjected to the acid treatment and the HY molecular sieve subjected to the acid treatment into a carrier; dipping steeping liquid containing catalyst active components to load the catalyst active components; and drying to obtain the catalyst for hydro-denitrification of heavy distillate oil. In the carrier, the content of the HY molecular sieve subjected to the acid treatment is 5 to 20 percent, the active components comprise Mo and/or W, and Co and/or Ni, the steeping liquid also comprises a complexing agent, the Mo and/or W oxide content of the catalyst is 10 to 30 percent, and the Co and/or Ni oxide content of the catalyst is 1 to 10 percent. The catalyst has the characteristics of reasonable acidic distribution, a large number of active metal stacking piles and complete metal vulcanization, has a high hydro-denitrification activity to the inferior heavy distillate oil, and has high hydro-desulfurization performance.

The invention relates to a processing method before the application of hydrogenation catalyst, comprising the detailed process as follows: organic solvent, elemental sulfur and water are introduced in oxidated hydrogenation catalyst; subsequently, heating predisposal is carried out under a certain condition. The processing method before the application of the hydrogenation catalyst loads the sulfur-contained substance such as the elemental sulfur to the hydrogenation catalyst; a certain interaction is generated and little heat is discharged; and the water vapor which is generated during the heat disposal process of the added water adjusts the interaction of the sulfur and the catalyst and reduces the heat discharging degree during the heat disposal process. Compared with the prior 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 activity of the catalyst when the activation is applied. The method can be used for processing before the application of various hydrogenation catalysts.

The invention discloses a preparation method of a modified aluminium oxide-based carrier. The preparation method comprises following steps: water soluble silicone oil and a soluble aluminum-containing compound are introduced into an aluminium oxide-based carrier successively or simultaneously, and the modified aluminium oxide-based carrier is obtained via heat treatment. The preparation method is capable of adjusting distribution of acid centers and hydrogenation active centers, achieving coordination effects, and improving catalyst performance; and the modified aluminium oxide-based carrier is suitable to be taken as a hydrogenation catalyst carrier.

The invention discloses a method used for preparing a hydrogenation catalyst. The method comprises steps of preparation of an aluminium oxide-based carrier containing silicon and magnesium, and loading of a hydrogenation active metal; in the step of preparation of the aluminium oxide-based carrier containing silicon and magnesium, water soluble silicone oil and a soluble magnesium-containing compound are introduced into an aluminium oxide-based carrier successively or simultaneously, and the aluminium oxide-based carrier containing silicon and magnesium is obtained via heat treatment. The method is capable of adjusting distribution of acid centers and hydrogenation active centers, achieving coordination effects, and improving comprehensive performance of the hydrogenation catalyst.

The invention discloses a preparation method of a hydrotreatment catalyst. The preparation method comprises the following steps: preparing a carbon-containing modified alumina-based carrier; loading the carrier with hydrogenation active metal component by using an impregnation process; and carrying out drying to obtain the hydrotreatment catalyst. A preparation method for the carbon-containing modified alumina-based carrier comprises the following steps: sequentially or simultaneously introducing water-soluble silicon oil, a soluble aid and a carbon precursor into an alumina-based carrier and carrying out heat treatment so as to obtain the carbon-containing modified alumina-based carrier. The method can adjust the distribution of an acid center and a hydrogenation active center to make the acid center and the hydrogenation active center coordinate with each other, thereby improving the comprehensive performance of the hydrotreatment catalyst.

The present invention relates to hydrocarbon hydrotreating process including the steps of loading catalyst into the reactor, activating, reaction, etc. The hydrotreating 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. The hydrotreating 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 hydrotreating process.

The invention discloses a method used for preparing a hydrogenation catalyst. The method comprises steps of preparation of an aluminium oxide-based carrier containing silicon and boron, and loading of a hydrogenation active metal; in the step of preparation of the aluminium oxide-based carrier containing silicon and boron, water soluble silicone oil and a soluble boron-containing compound are introduced into an aluminium oxide-based carrier successively or simultaneously, and the aluminium oxide-based carrier containing silicon and boron is obtained via heat treatment. The method is capable of adjusting distribution of acid centers and hydrogenation active centers, achieving coordination effects, and improving comprehensive performance of the hydrogenation catalyst.

The invention discloses a preparation method of a hydrogenation catalyst. The preparation method comprises a step of preparation of the modified aluminium oxide-based carrier, and a step of loading of hydrogenation active metals. According to the preparation method, water soluble silicone oil and a soluble aluminum-containing compound are introduced into an aluminium oxide-based carrier successively or simultaneously, and the modified aluminium oxide-based carrier is obtained via heat treatment. The preparation method is capable of adjusting distribution of acid centers and hydrogenation active centers, achieving coordination effects, and improving comprehensive performance of the hydrogenation catalyst.

The invention discloses a hydrodenitrification catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, a molybdenum element, a group VIII metal element, an electronic auxiliary agent and a surfactant, at least part of the molybdenum element exists in the catalyst in the form of phosphomolybdenum blue, and the electronic auxiliary agent is a soluble nitrogen-containing compound containing lone pair electrons. And the surfactant is one or more of long-chain fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyoxyethylene fatty acid ester, polyoxyethylene alkylamine, polyoxyethylene alkylolamides and polyether. The hydrodenitrogenation catalyst is used in a heavy oil hydrotreating process, can deeply remove nitrogen-containing compounds in heavy oil, and has good stability.