24results about How to "High viscosity index" patented technology

The invention belongs to the technical field of hydraulic oil, and particularly discloses super-lubricity energy-saving anti-wear hydraulic oil and a preparation method thereof. The super-lubricity energy-saving anti-wear hydraulic oil is prepared from the following components in parts by weight: 75 to 90 parts of composite base oil, 5 to 7 parts of viscosity index improver, 3 to 5 parts of friction improver, 1 to 3 parts of pour point depressant, 0.005 to 2 parts of anti-rust preservative, 0.003 to 0.02 part of demulsifying agent, 0.01 to 0.03 part of anti-foaming agent, 0.05 to 1 part of clearing agent, 0.05 to 2 parts of antioxidant and 0.05 to 1.5 parts of metal deactivator, the composite base oil is composed of coal base oil, second-class base oil and alkyl naphthalene base oil according to the mass ratio of 5: 4: 1. The super-lubricity energy-saving anti-wear hydraulic oil provided by the invention is high in viscosity index, excellent in shear stability, excellent in oxidation stability, excellent in low-temperature performance and small in friction coefficient, the service life of a product is greatly prolonged, the super-lubricity energy-saving and environment-friendly performance requirements are met, and the super-lubricity energy-saving anti-wear hydraulic oil has a wide application prospect.

The invention relates to the technical field of lubrication of gearboxes of wind generating sets, in particular to lubricating oil for a yaw variable-pitch speed reducer of a wind generating set and a preparation method of the lubricating oil. The lubricating oil is prepared from 49 to 53 parts of metallocene poly-alpha olefin, 23 to 28 parts of functional fluid containing a low-viscosity and low-volatility poly-alpha olefin base material, 15 to 20 parts of alkyl naphthalene, 2.5 to 3.0 parts of a composite additive bag, 2 to 5 parts of an oiliness agent, 0.005 to 0.01 part of a demulsifying agent, 0.02 to 0.03 part of a de-foaming agent and 0.005 to 0.01 part of a pour point depressant. The lubricating oil for the yaw variable-pitch speed reducer of the wind generating set has excellent high and low temperature performance, oxidation resistance, additive sensitivity and foam stability; in addition, the transmission energy efficiency is higher, and the excellent energy-saving effect is achieved.

The invention discloses a preparation method of environment-friendly plant-based transformer oil, and belongs to the technical field of high-temperature transformer oil. The lubricating oil comprises the following raw materials in percentage by mass: 1-8% of a viscosity index improver, 2-5% of an antioxidant, 0.05-0.2% of a demulsifying agent, 0.1-0.3% of an acid capturing agent and the balance of improved castor oil base oil. Various additives are added, so that the viscosity index and the oil-water separation capacity of the transformer oil can be improved, and hydrolysis can be inhibited; the castor oil is used as base oil, the transformer oil is endowed with degradability, and the castor oil base oil is improved, so that the flash point and breakdown voltage of the transformer oil can be improved; wherein the antioxidant and various groups in molecules can achieve a synergistic effect, so that the oxidation resistance of the transformer oil is remarkably enhanced; therefore, the prepared transformer oil is excellent in comprehensive performance, good in flash point, breakdown voltage and oxidation resistance and degradable, and has important application value in the technical field of high-temperature transformer oil.

The invention provides a synthetic lubricating oil composition and application thereof, and belongs to the technical field of lubricating oil. The synthetic lubricating oil composition comprises base oil, a pour point depressant and a composite additive, the base oil comprises synthetic ester base oil; the synthetic ester base oil consists of low-viscosity synthetic ester and high-viscosity synthetic ester. The composition has ultrahigh viscosity index and low-temperature performance, is diesel engine lubricating oil with very excellent low-temperature performance, passes a graphite flake friction characteristic test and a THOT oxidation test required by TES 439 specifications, and can meet the lubrication requirements of an engine and a transmission system.

The present invention relates to the technical field of lubrication of wind turbine gearboxes, and in particular to a lubricating oil for a yaw-pitch speed reducer of a wind turbine and a preparation method thereof. The lubricating oil comprises, by weight, 49-53 parts of metallocene polyalphaolefin, 23-28 parts of a functional fluid containing a low-viscosity and low-volatility polyalphaolefin base material, 15-20 parts of alkyl naphthalene, 2.5-3.0 parts of a composite additive package, 2-5 parts of an oiliness agent, 0.005-0.01 parts of a demulsifier, 0.02-0.03 parts of a defoamer, and 0.005-0.01 parts of a pour point depressant. The lubricating oil for a yaw-pitch speed reducer of a wind turbine according to the present invention has excellent high and low temperature performance, antioxidant performance, additive sensitivity, and foam stability; and the transmission energy efficiency is higher, and has an excellent energy-saving effect.

The invention relates to a hydrocracking catalyst and a preparation method and application thereof, and the method comprises the following steps: S1, carrying out molding treatment on a Y-type molecular sieve rich in mesopores to obtain a carrier; and S2, loading a metal active component on the carrier. When the catalyst prepared by the method is used for hydrocracking reaction of hydrocarbon raw oil, relatively high activity can be obtained.

The invention discloses a waste mineral oil multistage coupling heat exchange and gradient cooling energy-saving cooperative treatment method, which belongs to the technical field of heat energy engineering and energy conservation, and comprises the steps of pretreatment refining, fractionation cutting, molecular distillation, hydrofining, gradient cooling and intelligent control. By constructing a multi-stage coupling heat exchange network, hydrofining high-temperature waste heat is used for preheating fractionation feed, and fractionating tower top steam waste heat is used for preheating molecular distillation feed; cooling the high-temperature material flow according to the temperature by stages through a three-stage gradient cooling system, and recycling the low-temperature cold energy of the molecular distillation unit for a pretreatment process; and dynamically optimizing heat exchange and cooling operation based on an energy balance model through the central control system. According to the method, the technical problems of energy utilization splitting and serious waste heat waste in a waste mineral oil regeneration process are solved, the yield and the quality of a base oil product are greatly improved while the system energy consumption and the cooling water consumption are remarkably reduced, and an innovative solution is provided for efficient regeneration of the waste mineral oil.

This invention relates to viscosity index improver concentrates for use in lubricating oils, and particularly to a viscosity index improver concentrate (a concentrate of a star-shaped hydrogenated styrene (S)-isoprene (I)-butadiene (B) terpolymer viscosity index improver) prepared in situ in low-viscosity base oils, and its preparation method. The star-shaped viscosity index improver is synthesized by polymerization, hydrogenation, and deashing in low-viscosity base oils at a monomer concentration of 5wt%-15wt%, directly yielding the viscosity index improver concentrate. This invention's method for in-situ synthesis of star-shaped viscosity index improvers in low-viscosity base oils reduces the steps of solvent removal, solvent recovery, product drying, and redissolution required in traditional viscosity index improver synthesis methods, thereby lowering production costs and ensuring product quality. This invention also provides a method for preparing the viscosity index improver concentrate prepared in situ in low-viscosity base oils.

The present application relates to a molecular sieve composition, a preparation method thereof and application thereof. The molecular sieve composition of the present application comprises a mosaic molecular sieve of a TON structure molecular sieve and a 5A type molecular sieve. The molecular sieve composition of the present application has a dual function of adsorption and hydroisomerization.

The invention relates to a lubricating oil composition containing a base oil (A) that satisfies the requirements (A-1) to (A-4) and a polymer (B) that satisfies the requirements (B-1) and (B-2), where the requirements (A-1) to (A-4) and the requirements (B-1) and (B-2) are as described in the description.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a catalytic synthesis method of functional special polyether with narrow molecular weight distribution. The method comprises the following steps: by taking C1-C12 alcohol as an initiator, carrying out polymerization reaction with epoxide under the action of an organic catalyst, so as to prepare the functional special polyether with narrow molecular weight distribution. According to the invention, by designing an organic catalyst with a molecular structure containing phosphorus-boron (P-B) double active centers, not only is efficient catalytic ring-opening polymerization of alkylene oxide realized under a low-temperature condition, but also a special polyether product with high molecular weight and narrow molecular weight distribution is prepared. Meanwhile, by using the organic catalyst, the problems that a commercial DMC system is prone to inactivation, complex in mechanism and metal residues exist in ethylene oxide polymerization can be solved, and the application range of PAG in the fields of cosmetics, medicine and food-grade oil is widened.

A polymer composition, wherein the differential distribution value in the differential molecular weight distribution curve of the polymer composition measured by gel permeation chromatography satisfies the following formula 1, and the size q of the scattering vector of the small angle X-ray scattering of a 35wt% solution of the following base oil of the polymer composition at 25°C is 0.07nm ‑1 Above and 2nm ‑1 The maximum value of the normalized backscatter intensity within the range below 40 cm ‑1 above.

This invention provides a method for producing lubricating oil base oil from heavy feedstock and the resulting lubricating oil base oil. The method includes: cutting the heavy feedstock to obtain a light component, a middle fraction, and a bottom wax; wherein the boiling point ranges of the light component, the middle fraction, and the bottom wax are 170-300℃, 300-500℃, and >500℃, respectively; subjecting the bottom wax to a first isomerization reaction under the catalysis of a first isomerization catalyst to obtain a first isomerization product; subjecting the first isomerization product and the middle fraction to a second isomerization reaction under the catalysis of a second isomerization catalyst to obtain a second isomerization product; subjecting the second isomerization product to hydrorefining; and then fractionating the obtained refined product to obtain the lubricating oil base oil. The lubricating oil base oil produced by this method has high yield, low pour point, low cloud point, and high viscosity index, making it a high-quality lubricating oil base oil.

The invention relates to the technical field of coal chemical industry, and discloses a method for preparing lubricant base oil from Fischer-Tropsch hydrogenation tail oil. The method comprises the following steps: carrying out a first-stage reaction, a second-stage reaction and a third-stage reaction on the Fischer-Tropsch hydrogenation tail oil and hydrogen in sequence, and rectifying the reacted material, the first-stage reaction is carried out in the presence of a first hydroisomerization catalyst, and the second-stage reaction is carried out in the presence of a second hydroisomerization catalyst; the total acid amount of the first hydroisomerization catalyst is larger than that of the second hydroisomerization catalyst, and the specific surface area and pore volume of the first hydroisomerization catalyst are smaller than those of the second hydroisomerization catalyst; the temperature of the first-stage reaction is less than or equal to the temperature of the second-stage reaction, and the hydrogen partial pressure of the first-stage reaction is less than or equal to the hydrogen partial pressure of the second-stage reaction. According to the method, the Fischer-Tropsch hydrogenation tail oil full fraction can be applied, and it can be guaranteed that the prepared lubricating oil base oil has excellent quality.

The invention provides PAO base oil and a preparation method thereof. The preparation method of the PAO base oil comprises the following steps: reacting alpha-olefin at 80-100 DEG C for 4-8 hours under the action of a metallocene compound and a cocatalyst to obtain the PAO base oil, the cocatalyst comprises organic aluminum; the metallocene compound has a structure as shown in a formula I or a formula II: in the formula I, M is selected from Zr or Ti, and Cp is selected from cyclopentadienyl, substituted cyclopentadienyl, indene or substituted indene; r1 is selected from alkylene of C2-C4 and derivatives thereof; r2 is selected from C1-C4 alkyl groups and derivatives thereof; the molar ratio of aluminum in the cocatalyst to M in the metallocene compound is 180 to 400. The prepared PAO base oil has the characteristics of low viscosity and high viscosity index.

The present invention relates to a viscosity index improver containing a copolymer (A) that contains, as essential constituent monomers, a fluorine atom-containing monomer (a) represented by the following formula (1) and a monomer (b) represented by the following formula (2), wherein the copolymer (A) has a solubility parameter of 8.1 to 10.0 (cal / cm3)1 / 2, and a mass ratio (b / a) of the monomer (b) to the monomer (a) in the monomers constituting the copolymer (A) is 0.01 to 42: wherein R1 represents a hydrogen atom or a methyl group; R2 is a C2-C4 alkylene group; p is an integer of 0 or 1; q is an integer from 0 to 20, each R2 may be the same as or different from each other when q is 2 or greater; and Y is a monovalent group in which one or more or all of hydrogen atoms in a C1-C40 hydrocarbon group are replaced by fluorine atoms, and wherein R3 represents a hydrogen atom or a methyl group; - X1- is a group represented by -O- or -NH-; R4 is a C2-C4 alkylene group; r is an integer of 0 or 1; s is an integer from 0 to 20, and each R4 may be the same as or different from each other when s is 2 or greater; and R5 is a C1-C40 hydrocarbon group.

The present invention relates to the technical field of non-ferrous metal casting, and in particular to an environmentally friendly demoulding agent for aluminum ingot casting and a preparation method thereof. The demoulding agent comprises 45-75 parts of trimethylolpropane stearate, 15-45 parts of synthetic saturated hydrocarbon polymers, 1.5-5 parts of antioxidants, 0.05-5 parts of anti-wear agents, and 0.02-0.2 parts of non-ferrous metal corrosion inhibitors, in parts by weight. The weight ratio of the trimethylolpropane stearate to the synthetic saturated hydrocarbon polymer is (1-5): 1. The demoulding agent of the present invention has excellent wetting, spreading, and permeability, excellent anti-wear performance, high ignition point, low oil smoke, low coking tendency, and excellent hydrolysis resistance, and can greatly reduce the influence of cooling water on demoulding quality, and can also effectively control the pollution of cooling water, and the demoulding agent also has a high biodegradability, can ensure the surface quality of the ingot, improve casting efficiency, and reduce pollution.

The invention discloses ultralow-temperature zinc-free hydraulic oil for engineering machinery, which is prepared from the following raw material components in percentage by mass: 57 to 85 percent of II-type base oil, 5 to 30 percent of III-type base oil, 9 to 18 percent of viscosity index improver and 0.4 to 2.7 percent of other additives, and the sum of the contents of the raw materials is 100 percent. The kinematic viscosity of the zinc-free hydraulic oil at 40 DEG C is 41.4-50.6 mm < 2 > / s, the viscosity index is higher than 200, the pour point is lower than-45 DEG C, and the zinc-free hydraulic oil can provide excellent startability, high-temperature detergency, wear resistance and winter-summer universality for an engineering machinery hydraulic system in a low-temperature environment in winter.

The application belongs to the technical field of lubricating oil, and particularly relates to an environmentally-friendly biodegradable lubricating oil for a hydraulic retarder and a preparation method thereof. The environmentally-friendly biodegradable lubricating oil for the hydraulic retarder comprises the following components in parts by mass: base oil 80-90 parts, cleaning agent 1-3 parts, dispersant 1-3 parts, viscosity index improver 1-2 parts, anti-wear agent 0.5-2 parts, antioxidant 0.3-1.5 parts, anti-foaming agent 0.1-0.5 parts, and pour point depressant 0.1-0.3 parts. The antioxidant comprises a hindered phenolic ester, an aromatic amine and a zinc salt of a sulfur phosphoric acid in a mass ratio of 3-6:2-5:1. The environmentally-friendly biodegradable lubricating oil for the hydraulic retarder is biodegradable, has excellent high-temperature oxidation resistance and low-temperature resistance, and has a longer oil change period.

The invention relates to the technical field of lubricating oil, and discloses lubricating oil with high and low temperature viscosity-temperature performance and a preparation method and application thereof.The lubricating oil is prepared from, on the basis of the total amount of a lubricating oil composition, 60-90 wt% of ester base oil, 10-40 wt% of silicone oil base oil, 1-5 wt% of an antioxidant, 1-3 wt% of a phosphorus-containing anti-wear agent, 0.01-0.1 wt% of a corrosion inhibitor and 1-10 ppm of a defoaming agent, the lubricating oil composition can simultaneously meet high and low temperature requirements (-40 DEG C to 230 DEG C) of lubricating oil, the kinematic viscosity at 250 DEG C is not lower than 1.0 mm < 2 > / s, the kinematic viscosity at 100 DEG C is not lower than 6.0 mm < 2 > / s, and the kinematic viscosity at-40 DEG C is not higher than 17000 mm < 2 > / s.

The invention relates to the field of lubricating oil, and discloses a base oil light stabilizer which comprises 74-76% of base oil; 4 to 6% of zinc dialkyl dithiophosphate; 2-4% of an ethylene-propylene copolymer; 4 to 6 percent of polyalkoxy polyamine; 1-3% of an imidazoline derivative; 4 to 6% of polymethacrylate; and 4 to 6% of polyisobutylene bis-succinimide. The light stability of the oil product is improved by adjusting the ratio of the base oil to the light stabilizer, the transparency and ultraviolet resistance are enhanced by mixing 500N and PAO in a ratio of 1: 1, the antioxidant effectively inhibits oxidation caused by illumination and keeps the oil product clear, and the light stabilizer improves the dispersion stability, prevents aggregation of oxidation products and ensures long-term stability of the oil product. The antioxidant synergistically prolongs the oxidation induction period of the base oil, improves the anti-aging performance under high temperature and oxidation conditions, maintains the physical and chemical properties of the oil product, and has stronger durability.

The invention discloses a base oil production method, which comprises the following steps: mixing a raw material with hydrogen, feeding the mixture into a grading filling hydroisomerization dewaxing reactor, sequentially flowing through a protective agent layer and a catalyst layer to carry out hydroisomerization reaction, obtaining a catalytic product, and carrying out boiling point cutting to obtain base oil with a fraction of more than 340 DEG C. Along the material flow direction, the total acid amount of the catalyst is firstly increased and then reduced, and the molar percentage content of # imgabs0 # acid in the total acid amount is firstly increased and then reduced; the reaction temperature of the protective agent layer is lower than that of the catalyst layer, and the reaction temperature in the catalyst layer is firstly increased and then kept or reduced. According to the method, the hydroisodewaxing reactor filled in a specific grading manner is used and matched with temperature setting of different areas to produce the base oil, so that the yield of the base oil is higher, the content of sulfur and nitrogen is lower, the low-temperature performance (pour point and cloud point) indexes of the base oil can be effectively reduced, the viscosity index of the base oil is higher, and the service life of the base oil is prolonged. The quality of the base oil is effectively improved.

The invention relates to the technical field of chemical lubricating base oil, in particular to polyester poly-alpha-olefin base oil as well as a preparation method and application thereof. The preparation method of the polyester poly-alpha-olefin base oil comprises the following steps: firstly, mixing dibutyl itaconate and an initiator to obtain a mixed solution; then, dropwise adding the mixed solution into alpha-olefin, and carrying out free radical addition polymerization reaction on carbon-carbon double bonds of dibutyl itaconate and carbon-carbon double bonds of alpha-olefin under the action of an initiator, so as to obtain the polyester poly-alpha-olefin base oil. The preparation method provided by the invention not only has the characteristics of mild reaction conditions, easiness in control, easily available raw materials, environmental protection and no pollution, but also effectively solves the problem that the quality of the existing polyester poly-alpha-olefin base oil is reduced due to self-polymerization of (methyl) acrylate, and the polyester poly-alpha-olefin base oil can be applied as the lubricating oil base oil.

The invention provides a method for producing lubricating oil base oil from a heavy raw material and the obtained lubricating oil base oil, and the method comprises the following steps: cutting the heavy raw material to obtain a light component, a middle fraction and tower bottom wax; wherein the boiling point ranges of the light component, the middle fraction and the tower bottom wax are 170-300 DEG C, 300-500 DEG C and gt respectively; 500 DEG C; performing a first isomerization reaction on the middle fraction under the catalytic action of a first isomerization catalyst to obtain a first isomerization reaction product; carrying out a second isomerization reaction on the tower bottom wax under the catalytic action of a second isomerization catalyst to obtain a second isomerization reaction product; and mixing the first isomerization reaction product and the second isomerization reaction product, performing hydrofining, and performing fractionation cutting on the obtained refined product to obtain the lubricant base oil. The lubricating oil base oil product produced by the method provided by the invention is high in yield, low in condensation point and high in viscosity index, and is high-grade lubricating oil base oil.