1511 results about "Base oil" patented technology

The invention discloses a petroleum pipeline service life prediction system based on a 3D technology, and relates to the technical field of pipeline service life detection, and the system comprises a contour reconstruction module S11 which is used for obtaining the surface three-dimensional point cloud image data of a petroleum pipeline housing in an actual operation environment, and carrying out the surface contour reconstruction processing based on the three-dimensional point cloud image data, extracting space geometric structure data containing a local deformation defect area; the force-heat coupling analysis module S12 is used for constructing a finite element analysis grid according to the space geometric structure data and loading operation condition data into corresponding grid nodes to generate a force-heat coupling stress field, and the operation condition data comprises a periodic internal working pressure value, along-line temperature field data and an axial disturbance stress tensor; the feature extraction module S13 is used for calculating an equivalent stress distribution value of a defect area node based on a force-heat coupling stress field; according to the invention, accurate quantification of fatigue damage evolution of the defect area is realized.

The invention relates to the field of fire-resistant oil, in particular to phosphate-based fire-resistant oil with synergistically optimized flame resistance and stability and a preparation method of the phosphate-based fire-resistant oil. The fire-resistant oil comprises base oil and an additive, the base oil is a mixture obtained by esterification of mixed alkylphenol and phosphorus oxychloride; the molar percentage of the mixed alkylphenol is as follows: 4-6% of phenol; 11 to 14 percent of p-methylphenol; 22 to 26 percent of 2, 5-position dimethyl phenol; 0.8 to 1.5 percent of 2, 4-position dimethyl phenol; 2.5 to 4 percent of 2, 3-position dimethyl phenol; 0.4 to 0.6 percent of 4-ethyl phenol; 40 to 48 percent of 3, 5-position dimethyl phenol; 8 to 11% of 3-ethyl phenol; 3 to 5 percent of 3, 4-position dimethyl phenol; the additives comprise an antioxidant, a corrosion inhibitor, an anti-foaming agent and an anti-hydrolysis agent; the addition amount of the antioxidant is 0.05-5% of the total mass of the base oil; the addition amount of the corrosion inhibitor is 0.001%-0.08% of the total mass of the base oil; the addition amount of the anti-foaming agent is 0.001%-0.009% of the total mass of the base oil; the addition amount of the anti-hydrolysis agent is 0.001%-0.005% of the total mass of the base oil. The fire-resistant oil provided by the invention can be safely used under the working conditions of high temperature and extreme pressure.

The invention relates to the technical field of oil sludge resource regeneration, and discloses a water oil sludge resource regeneration device based on a composite ultrasonic field and application. The device comprises an oil sludge parameter acquisition module, a resonant frequency analysis module, a sound field coupling control module, a phase shift interference analysis module and a separation strengthening execution module. The oil sludge parameter acquisition module acquires a rheological characteristic data set of the oil-containing sludge in real time; the resonance frequency analysis module generates a dual-target resonance frequency parameter based on the data set; the sound field coupling control module drives the piezoelectric transducer array to generate a focused ultrasonic field, and a sound field coupling model is constructed; the phase shift interference analysis module corrects the phase offset of the model and outputs a multi-band sound energy injection sequence; and the separation strengthening execution module regulates and controls the rotating speed gradient of the mechanical centrifugal unit, triggers membrane stack pulse backwashing, and finally generates regenerated base oil and a purified water phase product. According to the device, efficient regeneration of water-oil sludge resources is realized through cooperation of multiple modules.

The invention relates to a water shutoff profile control agent and a preparation method thereof, and belongs to the technical field of oilfield chemicals. The water shutoff profile control agent is prepared by inverse emulsion polymerization reaction, and is prepared from the following raw materials: a water phase solution, an oil phase solution and an initiator, the water-phase solution comprises acrylamide, an anionic monomer, a cationic monomer, a temperature-resistant salt-resistant monomer, a cross-linking agent, a silane coupling agent modified carbon nanotube, a reinforcing agent, modified tannic acid and water; the oil phase solution comprises base oil and an emulsifier. The water shutoff and profile control agent prepared by adding the silane coupling agent modified carbon nanotubes, the reinforcing agent and the modified tannic acid in inverse emulsion polymerization is good in injectivity, high in strength after water absorption and swelling, controllable in swelling time, capable of achieving secondary crosslinking under the high-temperature and high-salt condition, and good in water shutoff and profile control effect. The plugging agent not only can be matched with oil layers with different permeability and heterogeneous stratums, but also can be well adapted to plugging of deep well ducts with higher pressure and higher depth, and the plugging effect is more excellent.

An integrated process having an ultra-low GHG footprint for converting Camelina based biomass to liquid fuels and lubricant base stocks in which a Camelina based biomass feed is converted to liquids by a multistep hydroprocessing method and the liquids are upgraded to produce premium hydrocarbon fuels and lubricants.

The invention relates to an oil-rich coal in-situ underground combustion and pyrolysis oil and gas recovery cooperative system based on high-temperature heat pipes. The system comprises a vertical shaft, a horizontal drill hole and a high-temperature heat pipe set. A high-temperature heat pipe set is arranged on the coal seam of the vertical shaft. A plurality of vertical wells are arranged with the vertical well as the center. Each vertical well is communicated with two parallel horizontal drill holes with different depths in the coal seam, the horizontal drill holes communicated with the adjacent vertical wells are not at the same depth of the coal seam, and four horizontal drill hole groups with different depths are arranged in the coal seam. Oxygen and carbon dioxide are mixed into oxygen-enriched gas, and combustion of coal in a certain horizontal drill hole is achieved. Flue gas generated by coal combustion is subjected to heat exchange through the high-temperature heat pipe set, and water vapor or carbon dioxide is heated. The high-temperature water vapor or carbon dioxide and the high-temperature flue gas after heat exchange enter the other two horizontal drill holes in the coal seam respectively, coal is pyrolyzed, and pyrolysis gas and tar are generated. According to the system, high-quality tar and high-calorific-value pyrolysis gas can be obtained, and only a small amount of energy needs to be provided from the outside.

The invention belongs to the technical field of asphalt pavement materials, and particularly relates to a high-permeability asphalt regenerant as well as a preparation method and application thereof, and the high-permeability asphalt regenerant is prepared from the following components in parts by weight: 100 parts of base oil, 20-50 parts of oil slurry, 5-20 parts of plasticizer and 5-15 parts of anti-aging agent. The high-permeability asphalt regenerant provided by the invention can effectively optimize the composition of old asphalt components, improve the interface fusion efficiency of new asphalt and old asphalt, and enable asphaltene to be better dispersed in aromatic components and saturated components by virtue of colloid to form a stable colloid structure; the indexes such as high and low temperature performance and water stability of the recycled asphalt mixture are improved, the temperature sensitivity of asphalt is reduced, the influence of external environment temperature on asphalt properties is reduced, and the recycled asphalt has excellent low temperature performance; the pavement performance of the RAP material is recovered, so that the performance of the aged asphalt is basically recovered to a non-aged level, and the service life of the asphalt material is prolonged.

The invention relates to the technical field of energy storage safety, and particularly discloses flame-retardant cooling liquid, a preparation method of the flame-retardant cooling liquid, an immersed energy storage device, a data center and electric equipment. According to the present invention, the base oil is at least one of the liquid halogenated alkane containing 2-6 carbon atoms, the liquid halogenated olefin, the liquid halogenated ketone and the liquid halogenated cycloalkane containing 3-6 carbon atoms, such that the high biodegradability of the base oil is maintained, the system viscosity is effectively reduced, the heat dissipation performance is improved, the insulating property of the base oil is significantly improved, and the service life of the base oil is prolonged. Meanwhile, the flame retardance is further enhanced. Therefore, the heat management efficiency of the cooling liquid is remarkably improved while environmental protection and safety are considered, and the cooling liquid has a good application prospect.

The invention discloses conductive lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease materials, the conductive lubricating grease comprises the following components by mass: 50-80 parts of base oil, 5-15 parts of a thickening agent, 3-10 parts of an additive, 5-20 parts of an oil soluble ionic liquid, and 1-10 parts of nanoscale conductive solid particles; the oil-soluble ionic liquid is prepared from trioctylamine, bromohexadecane and sodium di-tert-butyl phosphate. According to the conductive lubricating grease provided by the invention, the oil-soluble ionic liquid and the nanoscale conductive solid particles synergistically conduct electricity, so that the conductive lubricating grease has a tunnel conductive effect and excellent conductivity; besides, due to synergistic conduction of the oil-soluble ionic liquid and the nanoscale conductive solid particles, the addition amount of the conductive solid particles can be reduced, the anti-attrition effect of the conductive lubricating grease is further improved, meanwhile, the nanoscale conductive solid particles have a good anti-attrition effect, the solid size and the oil film thickness are both in nanoscale sizes, and the conductive lubricating grease has a good anti-attrition effect. Therefore, the conductive lubricating grease is excellent in overall anti-wear effect.

The invention belongs to the technical field of quenching oil, and discloses low-carbon steel quenching oil as well as a preparation method and application thereof, and the low-carbon steel quenching oil comprises the following components in percentage by mass: 88%-94% of base oil, 3%-7% of a cooling accelerant, 1.5%-2% of a dispersing agent, 0.5%-1.5% of a brightener and 1%-3% of a composite antioxidant, wherein the base oil comprises first base oil and second base oil in a mass ratio of 1: (1.8-2.2), the kinematic viscosity of the first base oil at 40 DEG C is 23 mm < 2 > / s-27 mm < 2 > / s, the kinematic viscosity of the second base oil at 40 DEG C is 86 mm < 2 > / s-90 mm < 2 > / s, and the flash points of the first base oil and the second base oil are both higher than 210 DEG C. According to the quenching oil, the industrial pain points that the cooling speed of traditional quenching oil is difficult to control, a workpiece is prone to deformation and cracking, and the performance is difficult to consider are precisely overcome, perfect balance of ultrahigh strength and excellent toughness is achieved on the basis that it is guaranteed that a material forms an ideal microstructure, and more reliable safety performance support is provided for an automobile anti-collision beam.

The invention belongs to the field of oil and gas exploitation, geothermal exploitation and deep ground engineering, and discloses an oil and gas shaft crack plugging pressure repair material and method based on microwave heating bismuth-based alloy, the material comprises 74%-86% of bismuth-based alloy powder, 10%-15% of Fe3O4-SiO2 core-shell magnetic particles, 3%-8% of a microwave sensitizer and 1%-3% of a wetting agent. The repairing material is conveyed to the position, where shaft crack plugging repairing needs to be conducted, in the oil and gas shaft, then the repairing material is melted in a microwave heating mode, then the melted alloy is filled in shaft crack plugging, and then a rotating gradient magnetic field is used for repairing the oil and gas shaft crack. And the liquid alloy is driven to directionally migrate to a target crack area along the magnetic line, and after alloy liquid is cooled and solidified, pressure repairing of the oil and gas shaft crack plugging target position is achieved. Precise positioning, efficient filling, phase change control and complete recovery of the repairing material can be achieved in the extremely deep environment, and therefore the high-quality repairing requirement for oil and gas shaft crack plugging pressure repairing achieved through efficient liquefaction of plugging metal can be met.

The invention discloses a lubricating grease composition I and a lubricating grease composition II, wherein the lubricating grease composition I is used as a raw material of the lubricating grease composition II. The lubricating grease composition I comprises 60-90 parts of base oil, 5-20 parts of a fatty acid composition, 2-5 parts of lithium hydroxide, 2-6 parts of modified nano boron nitride and 5-15 parts of an additive; wherein the viscosity of the base oil at 40 DEG C is 30-60 mm < 2 > / s, and the base oil is prepared by compounding and mixing 60%-90% w / w of poly-alpha-olefin synthetic oil (PAO) and the balance of synthetic ester (POE) belonging to V-type synthetic oil; the fatty acid composition is prepared from 12-hydroxystearic acid and unsubstituted C14-C20 saturated long-chain fatty acid, wherein the mass of the 12-hydroxystearic acid is 1 to 10 times that of the unsubstituted C14-C20 saturated long-chain fatty acid; the modified nano boron nitride is oleamide modified nano boron nitride; the additive is selected from at least one of an antioxidant, an anti-rust agent and an extrusion anti-wear agent. The invention also discloses application of the lubricating grease composition II as lubricating oil in lubrication of axle box bearings of high-speed railway trains with the speed of not less than 400km / h.

The invention relates to the technical field of power cables, in particular to antirust cable accessory insulation lubricating grease and a preparation method thereof.The antirust cable accessory insulation lubricating grease is prepared from, by weight, 100 parts of base oil, 8-25 parts of modified fumed silica, 0.01-3 parts of extreme pressure anti-wear agent and 0.1-1 part of antioxidant. According to the invention, a benzotriazole corrosion inhibition group and a diphenyl silane insulation barrier are synchronously constructed on the surface of fumed silica, so that integration of dual functions is realized. A triazole ring of benzotriazole is directionally exposed on the surface of the filler, a compact passivation film is formed through coordination of lone pair electrons and metal atoms, and an electrochemical corrosion path is blocked from the molecular level; and a rigid aromatic ring of diphenyl silane inhibits electron migration through a steric hindrance effect to form a high-energy barrier insulating layer. The two are stably combined through siloxane covalent bonds, so that the performance conflict caused by phase separation of an antirust agent and an insulating agent in a traditional physical mixing process is solved, and the lubricating grease is endowed with long-acting synergistic protection capability.

The invention belongs to the technical field of data center cooling, and discloses a narrow fraction mineral base oil single-phase immersed cooling liquid and a preparation method thereof in order to solve the problem of poor stability of the cooling liquid, and the preparation method comprises the following steps: preparing a dispersant; the preparation method comprises the following steps: adding an antioxidant and nano heat-conducting particles into narrow fraction mineral base oil, and stirring to obtain a product a; heating narrow fraction mineral base oil, adding a dispersing agent and an anti-rust agent, and stirring to obtain a product b; and finally mixing and stirring the product a and the product b. The cooling liquid provided by the invention takes the narrow fraction mineral base oil as a matrix, solves the problems of poor heat dissipation, weak oxidation resistance and low flash point of the traditional mineral oil through the synergistic effect of all the components, has low viscosity, high flash point, excellent electrical insulation and thermal conductivity, good compatibility and low volatilization rate, is suitable for immersed cooling systems such as a large computing power data center, and has wide application prospects. The high-efficiency heat dissipation and safe operation requirements of high-heat-density equipment can be met, the preparation process is simple, the cost is low, and the industrial application value is good.

The invention provides a formula of sleep-aiding essential oil containing cedar himalaya, relates to the technical field of sleep-aiding essential oil, and aims to solve the problems of single effect, poor stability and insufficient skin tolerance of existing sleep-aiding essential oil. The formula comprises the following components in parts by weight: 0.5-5 parts of Himalaya cedar essential oil, 80-95 parts of base oil, 1-10 parts of synergistic sleep-aiding essential oil, at least one of lavender essential oil, chamomile essential oil and sandalwood essential oil, and 0.1-1 part of optional antioxidant. During preparation, the components are ensured to be uniform through a process of stirring at a constant temperature of 25-35 DEG C and mixing at a rotating speed of 200-300rpm, the pH value of the product is 5.5-7.0, the retention rate of the active components is greater than or equal to 90% after the product is stored in a dark place at 25 DEG C for 6 months, and the use mode is that the product is smeared on wrists / necks / soles 1-2 hours before sleep, and 0.5-2mL of the product is smeared on each time. Tests show that the sleep time of insomnia people can be shortened to 15-22 min after the essential oil is continuously used for 28 days, the PSQI score is reduced by 40%-54%, the skin irritation is zero, the essential oil is suitable for preparing external sleep-aiding essential oil cream, ball bottles and other products, and a safe and efficient solution is provided for sleep disorder people.

The invention discloses a preparation method of high-temperature transformer oil, and belongs to the technical field of high-temperature transformer oil. Comprising the following steps: 1, carrying out hydrolysis reaction to obtain ricinoleic acid; step 2, carrying out first esterification reaction to obtain a ricinoleic acid esterification product; 3, performing epoxidation reaction to obtain an epoxidized ricinoleic acid esterification product; 4, carrying out ring-opening reaction to obtain ring-opened castor oil; 5, carrying out a second esterification reaction to obtain modified castor oil base oil; and 6, mixing the modified castor oil base oil, a viscosity index improver, an antioxidant, a demulsifying agent and an extreme pressure agent to obtain the high-temperature transformer oil. The invention provides modified castor oil and a preparation method thereof. The high-temperature antioxidant transformer oil prepared by using the modified castor oil as base oil has the characteristics of environmental protection, degradability, high flash point, high breakdown voltage and the like, and also has excellent oxidation stability.

The invention belongs to the technical field of hydraulic oil preparation, and particularly relates to anti-wear hydraulic oil and a production process thereof. The anti-wear hydraulic oil is prepared from the following raw materials in percentage by mass: 2 to 2.2 percent of an anti-wear complexing agent, 0.002 to 0.003 percent of a demulsifying agent, 0.001 to 0.0015 percent of an anti-foaming agent, 0.03 to 0.04 percent of an anti-rust agent, 0.1 to 0.3 percent of a pour point depressant, 0.3 to 0.5 percent of a dispersing agent and the balance of base oil. According to the anti-wear hydraulic oil disclosed by the invention, a mixture of 500N II type base oil, 100N III type base oil, CTL 4 base oil and trimethylolpropane trioleate is used as base oil, and an anti-wear complexing agent, a demulsifier, an anti-foaming agent, an anti-rust agent, a pour point depressant and a dispersing agent are added into the base oil; the prepared anti-wear hydraulic oil is ensured to have excellent extreme pressure property, thermal oxidation stability and wear resistance.

The invention provides polyether base oil and a preparation method and application thereof.According to the polyether base oil, a melt polycondensation method is adopted, a diester group-COO-R-COO-is introduced into a molecular structure through hydroxyl groups at the two ends of polyalkylene oxide, a polyether ester molecular chain with ether bonds and diester bonds distributed alternately is formed, and the polyether base oil is prepared. Then, carboxyl at the end group of a molecular chain is further subjected to an end-capping reaction with an amine compound, a unique amine double-end-capped polyether ester structure is obtained, and the polyether base oil has excellent viscosity-temperature performance, oxidation resistance, anti-rust performance and anti-wear and anti-friction performance.

The present invention relates to the technical field of waste lubricating oil treatment, and discloses a non-distillation regeneration apparatus and system, the non-distillation regeneration apparatus comprises: a high pollution lubricating oil pretreatment unit for removing water and other large particle impurities in waste oil; the electro-adsorption unit is used for capturing pollutants such as polar oxides and colloids in oil by adopting a porous conductive framework under the action of a direct-current electric field; the molecular filtering unit is used for carrying out cross-flow filtering by utilizing a ceramic membrane assembly and removing macromolecular non-ideal components; the deep purification unit is filled with a composite adsorbent to further purify the base oil, and the final product quality is ensured. By means of the innovative electro-adsorption refining filter and the multi-stage collaborative purification process, efficient regeneration of the waste lubricating oil under the non-distillation condition is achieved, high-quality base oil can be stably produced, and the method has the remarkable advantages of being energy-saving, environmentally friendly and high in automation degree.

The invention discloses driving oil for new energy hybrid power automobile power and a preparation method thereof, and particularly relates to the technical field of driving oil, the driving oil comprises 70-85% of base oil, 0.8-2.5% of a conductive inhibitor, 1-3% of a nanometer heat conduction agent, 4-8% of a viscosity index improver, 0.1-0.5% of an ion trapping agent, 3-5% of an anti-wear reagent at extreme pressure, 0.5-1.5% of an antioxidant and 0.001-0.01% of an anti-foaming agent. The preparation method comprises the following steps: S1, base oil pretreatment, S2, nano heat conduction agent in-situ modification, and S3, gradient temperature control compounding. Through compounding of the base oil in a specific proportion and the synergistic effect of multiple additives, the problems of insufficient insulativity, easy oxidation, poor viscosity stability, low heat conduction efficiency, poor material compatibility and the like of traditional oil in a hybrid power system are solved, effective protection of a motor and an electric control system is realized, the heat management efficiency is improved, and the service life of the hybrid power system is prolonged. And the service life of oil is prolonged, the maintenance cost is reduced, and the special requirements of power and driving systems of hybrid vehicles are met.

The invention provides an oil taking port recognition method and system based on vision, and the method comprises the steps: collecting an oil taking port image through a monocular camera on a mechanical arm after an oil taking robot moves to a specified oil taking position of a transformer; identifying a target area of the oil extraction port through a deep learning algorithm, extracting the target area of the oil extraction port for binarization processing, fitting the contour of the oil extraction port through a minimum enclosing rectangle, taking the central point of the minimum enclosing rectangle as the oil extraction port, and calculating the coordinate of the oil extraction port in the image; the relative distance between the tail end of the mechanical arm and the oil taking opening is measured through a laser displacement sensor; calculating the position of the oil taking port in a world coordinate system according to the coordinate of the oil taking port in the image, the relative distance from the mechanical arm to the oil taking port, the internal and external parameters of the camera and the calibration posture of the laser displacement sensor, and moving the oil taking pipe to the position of a target oil taking port by driving the mechanical arm according to the position of the oil taking port. Through the scheme, the oil extraction efficiency of the transformer can be improved, the labor cost is saved, and the safety of oil extraction operation is guaranteed.

The objective of the present invention is to provide technology for optically quantifying the physical properties of oil.　One aspect of the present invention provides a method for generating an estimation model for physical properties of oil using an information processing system comprising an input device, an output device, a processing device, and a storage device, wherein the information processing system is provided with an estimation model generating unit that generates a machine-trainable estimation model, and the estimation model generating unit accepts input of an absorption spectrum obtained by transmitting light including at least some wavelengths between 800 and 2500 nm through an oil that contains a base oil and an additive, and a value reflecting a physical property value of the oil, and generates the estimation model by machine learning using a value based on the absorption spectrum as an explanatory variable, and the value reflecting the physical property value of the oil as a dependent variable.

The invention provides a gas engine lubricating oil composition and a preparation method thereof. The gas engine lubricating oil composition of the present invention comprises: (A) an alkyl phosphate compound; (B) alkylated diphenylamine; (C) a polyisobutylene succinic acid pentaerythritol ester dispersing agent; (D) a salicylate and / or sulfonate; (E) zinc dialkyl dithiophosphate; (F) an oil-soluble organic molybdenum friction modifier; (G) a metal corrosion inhibitor; (H) a pour point depressant; (I) a major amount of a lubricating base oil. The gas engine lubricating oil composition disclosed by the invention has excellent high-temperature oxidation resistance, cleaning performance, extreme pressure anti-wear performance and anti-corrosion performance.

The application discloses a long-acting thixotropic rust-proof oil composition which is composed of the following components in mass fraction: base oil 70-95 parts, rust-proof agent 5-15 parts, auxiliary rust-proof agent 1-5 parts, antioxidant 0.1-1 part, thixotropic agent 1-20 parts and film forming agent 1-5 parts. The application also discloses a preparation method thereof, wherein after the components are weighed, the base oil is heated and stirred, and then added into the film forming agent to obtain mixture A; the mixture A is added into the thixotropic agent, the rust-proof agent, the auxiliary rust-proof agent and the antioxidant in sequence, and then constant-temperature stirring is conducted to obtain mixture B; after the mixture B is filtered, the filtrate is the composition of the application. The long-acting thixotropic rust-proof oil composition has a high thixotropic index, is not prone to flowing, and can keep a stable oil film thickness on the surface of a workpiece; under the conditions of damp heat and salt spray, the long-acting thixotropic rust-proof oil composition can exhibit more excellent rust-proof performance, and is suitable for harsh storage or transportation conditions such as sea transportation.

The invention discloses an oil tank liquid level real-time monitoring method and system based on an intelligent sensor, and the method comprises the following steps: S1, collecting and preprocessing oil tank liquid level data, and constructing a liquid level time sequence; s2, extracting a time sequence fragment in a sliding manner, analyzing a trend, calculating a change rate and an amplitude, and generating a trend feature vector; s3, constructing a prediction model for reasoning, performing transformation, gating and mapping on a result, and generating a trend prediction and abnormal probability sequence; s4, fusing the sequence to calculate a mean value and a standard deviation, and constructing a threshold value based on Z-score to identify an abnormal time step; s5, calculating an error between a predicted value and a reference value, and dynamically adjusting PID parameters to generate a control instruction; and S6, comparing predicted data with real-time data before control, and updating model parameters according to deviation. According to the method, intelligent sensor collection, BEMD decomposition, deep learning trend prediction and a PID control feedback mechanism are fused, and the prediction precision and the regulation response capability of oil tank liquid level monitoring are improved.

The present invention provides a grease composition and an axle bearing in which the grease composition is sealed.SOLUTION: The grease composition of the present invention contains a base oil, a thickener, and an additive, the additive contains an organic metal salt of a divalent metal and an inorganic metal salt of a divalent metal, the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 1.00% by mass or more based on the grease composition, and the metal content of the organic metal salt with respect to the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 0.20 or more on a mass basis.SELECTED DRAWING: None

This invention relates to a hydrogen-form ZSM-48 molecular sieve, its synthesis method, and its applications. The hydrogen-form ZSM-48 molecular sieve has an average mesopore size of 6 nm to 30 nm, a B / L acid ratio of 0.7 to 3.4, and a specific surface area of ​​100 m². 2 / g~500m 2 / g. The synthesis method of the hydrogen-form ZSM-48 molecular sieve includes the following steps: (1) Under contact conditions, silicon source, aluminum source, template agent and water are mixed evenly to obtain a gel; (2) The gel obtained in step (1) is subjected to hydrothermal crystallization treatment, and then washed, dried and calcined to obtain hydrogen-form ZSM-48 molecular sieve. The template agent in step (1) includes hexamethylammonium hydroxide and urea; preferably, the template agent also includes urease. The synthesis method controls the molecular sieve pore size and B / L acid ratio by introducing urease and using a two-stage hydrothermal treatment method, thereby realizing the control of molecular sieve properties according to the target reaction characteristics, which is beneficial to improving the yield of low-branched isoalkanes and improving the quality of lubricating oil base oil.

The invention relates to the technical field of waste mineral oil recycling, in particular to a waste mineral oil recycling process which comprises the following steps: feeding waste mineral oil into a settling tank, adding a modified PAC flocculant, stirring, standing, settling and separating; filtering the upper-layer oil phase through a ceramic membrane filter to obtain primary purified oil; feeding the oil into a flash evaporation-thin film evaporation coupling device to obtain dehydrated oil; feeding the dehydrated oil into a tubular heating furnace for heating, and feeding into a reduced pressure distillation tower to obtain rectified crude oil; extraction treatment: adding the rectified crude oil and a composite refining agent into an extraction tower, and carrying out counter-current extraction to obtain a refined solution and an extract; heating the refined liquid to enter a flash steam stripping tower to remove the residual compound refining agent, mixing the refined liquid with mixed hydrogen, and adding the mixture into a hydrogenation reactor; and purification treatment: carrying out high-temperature treatment and low-temperature treatment on the hydrotreated effluent in sequence to obtain refined base oil. According to the method, the purification efficiency of the waste mineral oil is improved, and meanwhile, unification of economical efficiency and environment friendliness is achieved through process coupling and material innovation.

The application belongs to the technical field of lubricating oil, and specifically provides a gas engine lubricating oil and a preparation method thereof.The gas engine lubricating oil comprises the following raw materials: ester base oil, anti-wear agent, dispersant, pour point depressant and antifoaming agent, wherein the ester base oil is prepared by esterification reaction of polyhydric alcohol and fatty acid; the preparation method of the anti-wear agent comprises the following steps: first, reacting acrylic acid with vinyl imidazole to prepare a modifier; then, polymeric phenol is obtained by polymerization of phenol under the action of a catalyst; finally, the polymeric phenol, boric acid and vegetable oil are reacted, the modifier is added after a certain time of reaction, and the reaction is continued to obtain the anti-wear agent.The preparation method of the gas engine lubricating oil of the application is that the raw material components are uniformly mixed according to the formula, and the gas engine lubricating oil of the application has good wear resistance, oxidation resistance, high-temperature detergency and thermal stability.

The present invention provides a method for lubricating a combustion engine that is suitable for improving at least one of the following: deposits, sludge, oxidation, and wear. [Solution] A method for lubricating a combustion engine comprises lubricating the combustion engine with a lubricating oil composition, wherein the lubricating oil composition comprises a base oil having a lubricating viscosity having more than about 90 weight percent saturated material, less than about 0.03 weight percent sulfur, and more than about 50 weight percent hydrogenated mineral oil having a viscosity index of less than or equal to about 120; a detergent system having less than about 5 weight percent metal from a non-sulfonate detergent and (ii) a total base number (TBN) of a specific value, giving about 60 to about 85 percent of the total lubricating oil composition TBN; an anti-wear system comprising one or more zinc dihydrocarbyl dithiophosphate compounds; and an antioxidant system comprising one or more phenolic antioxidant compounds, one or more amine antioxidant compounds, or a combination thereof.