201results about How to "High aromatic content" patented technology

The invention relates to a method for preparing mesophase asphalt by coal liquefaction residue. In the method, the coal liquefaction residue is ground, screened and dried, and is extracted at certain temperature for certain time by using organic solvent as extracting solvent; the extracted mixed liquor is filtered, purified and evaporated; the extracting solvent in the extract liquor is evaporatedto obtain refined coal liquefaction oil asphalt, thus obtaining the mesophase asphalt by charring for 4-10 hours in a high-pressure autoclave under the conditions of 410-460 DEG C, 3-4MPa of constantpressure and stirring. The method has simple process and convenient and safe operation, the mesophase asphalt with high quality is prepared and can be used as raw materials of high power and ultra high power graphite electrode, carbon fiber and the like.

This invention is a preparation method of basic oil of lubricating oil. This method includes: a) in the hydro-treatment reacting area, the hydro-pressure is more than 11-30 MPa, under 320-430deg.C contact a hydrocarbon oil filler with hydro-treating catalyst; b) in a dewaxing area, the hydro-pressure is more than 11-30 MPa, under 320-430deg.C contact hydro-treated oil with a dewaxing catalyst; c) in a hydro-refining area, the hydro-pressure is more than 11-30 MPa, under 170-320deg.C contact the dewaxing oil with a hydro-catalyst containing SiO2/alumina, platinum and Pd metal to prepare the basic oil of the lubricating oil.

A stable distillate fuel blend useful as a fuel or as a blending component of a fuel that is suitable for use in an internal combustion engine, said fuel blend prepared from at least one highly paraffinic distillate fuel component and at least one highly aromatic petroleum-derived distillate fuel component and a process for preparing same involving the blending of at least two components having antagonistic properties with respect to one another.

The invention discloses a preparation method of a hydrocracking catalyst. The method comprises: first selecting a solution containing a hydrogenation active metal and an organic reagent to dip mixed powder of a molecular sieve and alumina, conducting drying, then subjecting the obtained material and a peptizing agent or a binder together to rolling, molding, drying and roasting, thus obtaining the catalyst. Only through one time high temperature roasting can the catalyst product be obtained. The preparation method is simple, and the preparation cost is obviously reduced. In addition, the hydrogenation activity center and the cracking activity center of the catalyst coordinate, so that the catalyst has very high catalytic activity. Also with a large specific surface area and pore volume, the hydrocracking catalyst is more suitable for a catalytic process of treating high dry point inferior vacuum distillate oil by hydrocracking for high production of naphtha.

A hydrocracking process for increasing the output of intermediate fractional oil to maximum features that the hydrorefined heavy petroleum hydrocarbon is contacted first with the beta-zeolite hydrocracking catalyst for cracking the most of raw material and then with the Y-zeolite hydrocracking catalyst for cracking the rest of raw material. Its advantages are high selectivity and low content of olefin in intermediate fractional oil.

The invention relates to a technology for producing coal-series needle coke by taking middle-temperature and low-temperature coal tar asphalt as a raw material. The technology mainly comprises the following steps: carrying out decompression and distillation, and extraction and removal on middle-temperature and low-temperature coal tar; combining hydrogenation treatment, thermal polymerization andcalcining technologies under the action of a non-metal homogeneous mild-hydrogenation catalyst to prepare the coal-series needle coke with good performance and relatively high yield. The non-metal homogeneous mild-hydrogenation catalyst is mainly prepared from the following raw materials in percentage by mass: 55 weight percent to 79 weight percent of semi-coke, 20 weight percent to 40 weight percent of coke and 1 weight percent to 5 weight percent of graphene. According to the technology provided by the invention, after the raw material is subjected to combined pre-treatment, a refined asphalt raw material is reasonable in constitution and has a few of impurities; the catalyst has excellent modification performance and does not need to be separated subsequently; the graphene component also can be used for promoting a middle phase in a thermal polymerization process to form a wide-area and ordered fibrous structure and a high-performance needle coke product is easy to form.

The invention discloses a pretreatment method for producing needle coke raw material from catalytic slurry oil. The method includes the following steps: filtering the catalytic oil slurry and subjecting the catalytic oil slurry to a mild hydrogenation treatment; introducing 20-50 wt% of the oil produced by hydrogenation into a vacuum distillation device with the operation conditions of pressure of 5-100 mmHg and temperature of 300-450 DEG C; and mixing the hydrogenation light distillates and the rest oil produced by hydrogenation and using the mixture as the raw material for production of needle coke. The method is applicable to production of needle coke raw material from the catalytic slurry oil rich in aromatic hydrocarbons.

The invention discloses a catalyst for deep desulfuration and octane number increase for gasoline and preparation and application methods thereof. The functional catalyst comprises NiM/ZnO-ZSM-5. The preparation method comprises the steps of: firstly, synthesizing nanometer zinc oxide with high specific surface by using a low-temperature solid-phase method, then respectively steeping nickel and auxiliary metal, in the form of ions, onto the surface of the zinc oxide by using a steeping method, drying, roasting, and reducing in hydrogen to obtain a nanometer composite of the nickel, the auxiliary metal and the zinc oxide, wherein the nickel and the auxiliary metal are bonded in an alloy manner and uniformly disperse on crystalline phases of the zinc oxide. The catalyst has the reaction conditions that the reaction temperature is 350-450 DEG C, the pressure is 0.5-1.6MPa, the hydrogen-oil volume ratio is 100-300 and the air speed is 2<-10>h<-1>. By using the catalyst disclosed by the invention to treat straight-run gasoline, the deep desulfuration and the aromatization of alkane and olefin are performed at the same time, so that the octane number of a product gasoline is obviously increased.

The invention discloses a hydrotreatment and catalytic cracking combined method for residuum. The hydrotreatment and catalytic cracking combined method for residuum comprises the following steps that a residuum raw material and at least part of a catalytically cracked diesel fraction undergo a hydrotreatment reaction in the presence of hydrogen and a hydrotreatment catalyst in a hydrotreatment device; a hydrotreatment reaction effluent is subjected to gas-liquid separation; a gas phase is circularly used for a hydrotreatment reaction and a liquid phase directly enters into a catalytic cracking device without passing through a fractionation device and then undergoes a catalytic cracking reaction; a catalytic cracking reaction effluent is treated by the fractionation device so that dry gas, liquefied gas, a catalytically cracked gasoline fraction, a catalytically cracked diesel fraction, catalytically cracked recycle oil and catalytically cracked slurry are separated out; a part or all of the catalytically cracked diesel fraction is fed back to the hydrotreatment device and then undergoes a hydrotreatment reaction; and the catalytically cracked recycle oil is fed back to the catalytic cracking device and then undergoes a catalytic cracking reaction. Compared with the prior art, the hydrotreatment and catalytic cracking combined method for residuum can realize maximum-yield production of gasoline, save an equipment investment, fully utilize reaction heat and reduce production energy consumption.

The present invention provides a hydrocracking catalyst and a preparation method thereof, and a hydrocracking reaction method. The hydrocracking catalyst comprises a carrier and active components loaded on the carrier, wherein the active components comprise three components such as molybdenum, cobalt and nickel, the molybdenum content is 3-20 wt%, the cobalt content is 0.5-5 wt% and the nickel content is 0.1-1.5 wt% by adopting the total weight of the hydrocracking catalyst as the reference (calculated as the oxide), a molar ratio of cobalt atoms to nickel atoms in the active components is 1-10:1, the carrier contains a solid acid component and an inorganic heat-resistant oxide, and the solid acid component comprises at least two components selected from amorphous silicon-aluminum, a macroporous zeolite molecular sieve and a mesoporous zeolite molecular sieve. The hydrocracking catalyst of the present invention does not easily produce carbon deposition, can obtain the hydrocracking product having the high aromatic hydrocarbon content, and has great industrial application prospects.

Polish formulations are provided which comprise:a) an aliphatic hydrocarbon solvent comprising 0-10% aromatic hydrocarbons;b) an acrylic resin; andc) a wax product that is thermoplastic, transparent, a solid at room temperature and has a melting/softening point of about 60° to about 90° C.; wherein wt:wt ratio of said acrylic resin and wax is about 1:3 to about 1:8 and the wt:wt ratio of said resin and wax to said solvent is about 1:1 to about 1:9. The formulations function as surface polishes that can be used on any hard surface including wood, metal, stone, and other non-porous surfaces.

The invention discloses environmental-friendly rubber filling oil and a preparation method thereof. The method comprises the following steps of: (1) hydrotreating a vacuum cut 3 distillate to obtain hydrotreating oil; (2) extracting the hydrotreating oil in an extraction tower for the first time to obtain raffinate at the tower top of the extraction tower, and recycling a solvent to obtain primary refined oil; preparing extract at the tower bottom of the extraction tower, and recycling the solvent to obtain primary extract oil; (3) extracting the primary refined oil into the extraction tower for the second time to obtain the raffinate at the tower top of the extraction tower, and recycling the solvent to obtain secondary refined oil; preparing extract at the tower bottom of the extraction tower, and recycling the solvent to obtain secondary extract oil, that is to say, environmental-friendly rubber filling oil. The environmental-friendly rubber filling oil, provided by the invention, has the advantages of high aromatic hydrocarbon content, good compatibility with the rubber and excellent processing performance, the mass percentage composition of the aromatic hydrocarbon reaches 19-26%, the environmental-friendly rubber filling oil can be used in a tire manufacturing process, and excellent performances such as good wet traction and the like can be given.

A process for the production of aromatics through the reforming of a hydrocarbon stream is presented. The process utilizes the differences in properties of components within the hydrocarbon stream to increase the energy efficiency. The differences in the reactions of different hydrocarbon components in the conversion to aromatics allows for different treatments of the different components to reduce the energy used in reforming process.

The invention discloses a method for carrying out regeneration treatment on useless lubricating oil, and belongs to the technical field of an oil product quality improving technological process in a petroleum processing technology. The method comprises a solvent treatment step, a membrane separation step, a hydrogenation modification step, an adsorption, supplementation and purification step and a normal-pressure fractionation step. According to the method disclosed by the invention, most of metal and polar additives can be removed by adopting a solvent treatment method and a membrane separation method, aromatic hydrocarbon, heteroatoms, undissolved matters and most of residual carbon and residual metal can be removed through the hydrogenation modification step of a stationary bed, and residual polar additives can be further removed through the adsorption, supplementation and purification step, so that the light stability and the thermal stability of a product are increased, high-quality lubricating oil base oil can be produced, and byproducts of high-quality naphtha and high-quality diesel can be produced.

The invention discloses a method for preparing aromatic rubber oil, which comprises: fully contacting raw material oil and an extract solvent to obtain first extract ad first raffinate, wherein the raw material oil is solvent refining extract oil, the extract solvent mainly comprises a primary solvent and a first counter solvent, and the primary solvent content in the extract solvent is higher than the content of first counter solvent in the extract solvent; fully contacting the first extract with a second counter solvent to obtain second raffinate and second extract; and recovering second raffinate from the second raffinate to obtain the aromatic rubber oil. The total content of eight polycyclic aromatic hydrocarbons (PAHs) in the aromatic rubber oil prepared by the method provided by the invention is low and meets the requirement of 2005/69/EC instruction of the European Union, the mass content of polycyclic aromatic hydrocarbon (PCA) is less than 3 percent, and because of the low saturated hydrocarbon content, the pour point of the aromatic rubber oil is low.

The present invention is industrial method of reusing waste plastics to produce gasoline and diesel oil. Waste plastics including polyethylene, polypropylene and polystyrene in certain proportion are mixed and heated to liquefy and crack inside one reactor with double-screw stirrer inside it and molten salt inside sandwiched layer as heat conducting medium; the produced material is viscosity reducing cracked and the cracked gas is condensated into liquid fed to rectifying tower; molten plastic liquid is pumped from the reactor into one solid-liquid separator with separating molten salt liquid to separate residue and dirt; clean molten plastic is returned to the reactor while the separated residue and dirt is exhausted via screw extruder in the bottom of the separator; and decompression distillation is performed to produce oil. The present invention can produce oil with high quality in low cost and high conversion rate while tackling white pollution.

A MFI-structured molecular sieve containing phosphorus and metal components has a formula expressed in anhydrous form and on the basis of oxide weight, as follows: (0˜0.3) Na₂O (0.5˜5.5) Al₂O₃ (1.3˜10) P₂O₅ (0.7˜15) Ml_xO_y (0.01˜5) M2_mO_n (70˜97) SiO₂, wherein M1 is one of transition metals selected from the group consisting of Fe, Co and Ni, and M2 is any one of metals selected from the group consisting of Zn, Mn, Ga and Sn. Preparation processes and uses of the instant molecular sieve are also provided. The molecular sieve has an excellent performance for increasing the yield of lower olefins and increasing the aromatics content in gasoline, and can be used as a shape-selective active component for the catalytic cracking catalyst of petroleum hydrocarbons or its additives.

The invention provides a method for reducing sulfur content in gasoline. According to the invention, full-fraction gasoline is fractionated to obtain a light gasoline fraction, an intermediate gasoline fraction and a heavy gasoline fraction, wherein the light gasoline fraction is subjected to alkali washing and refining so as to remove mercaptan sulfur therein, the intermediate gasoline fraction enters into a first hydrogenation unit for catalytic reforming so as to obtain a reformed intermediate gasoline fraction with an increased octane number, the heavy gasoline fraction enters into a second hydrogenation unit and contacts with a selective hydrodesulfurization catalyst for selective hydrodesulfurization, and the refined light gasoline fraction, the reformed intermediate gasoline fraction and the hydrogenated heavy gasoline fraction are mixed to obtain a full-fraction gasoline fraction with ultra low content of sulfur. The obtained full-fraction gasoline product has total sulfur content of less than 10 mu g/g, and compared with a full-fraction gasoline raw material, loss of the octane number ROC of the full-fraction gasoline product is less than 1.0 unit.

The invention discloses a method for preparing aromatic hydrocarbon and hydrogen-rich fuel gas through catalytic thermal conversion of polyolefin waste plastics. The method comprises: feeding pretreated polyolefin waste plastics into a reaction container, and using a metal-loaded zeolite molecular sieve as a catalyst, wherein a mass ratio of the polyolefin waste plastics to the catalyst is 5-30:1;introducing nitrogen into the reaction container; after the initial nitrogen pressure in the reaction container reaches 1-30 bar, maintaining the reaction system closed, heating the reaction container to 320-500 DEG C, stopping the heating, and collecting a gas product and a solid-liquid product in the reaction container after the reaction container is cooled to a normal temperature, wherein thegas product is collected through a gas collecting tank, the solid-liquid product passes through a filter to collect the catalyst and the residue of the reaction raw material, and the obtained liquid product is further treated. According to the invention, the aromatic hydrocarbon compound is directionally prepared through catalytic thermal conversion by using the polyolefin waste plastics as the raw material, and is used as a chemical raw material for production processing, so that the method is an effective waste plastic resource utilization method.