272 results about "Pour point" patented technology

The invention discloses high-performance anti-wear engine lubricating oil as well as a preparation method and application thereof. The high-performance anti-wear engine lubricating oil is prepared from the following raw materials: self-developed lubricating oil base oil, poly-alpha-olefin, zinc dialkyl dithiophosphate, calcium sulfonate, polyisobutylene succinimide, an antioxidant, polymethacrylate, an organic molybdenum complex, a de-foaming agent and a pour point depressant. The preparation method comprises the following steps: 1) synthesizing 9, 10-bis (2-tert-butyl-4-methylphenoxy) trimethylolethane stearate as base oil of the lubricating oil; and 2) mixing the base oil with other assistants to obtain the high-performance anti-wear engine lubricating oil. According to the preparation method, novel-like synthetic ester oil is firstly prepared, a phenol group and a large steric hindrance substituent group are introduced into a polymer, the anti-oxidation function is directly built in base oil molecules, meanwhile, super-strong heat resistance is achieved, and finally the high-performance anti-wear engine lubricating oil is obtained and can be applied to high-end application scenes such as aero-engines or gas turbines.

The invention relates to a pour point depressing paraffin inhibitor and a preparation method thereof. The pour point depressing paraffin inhibitor is prepared from the following raw material components: graphene oxide, acrylic acid, a dispersing agent, a catalyst and a solvent, wherein the content of the graphene oxide is 4%-14.5% by mass, the content of the acrylic acid is 38%-76% by mass, the content of the dispersing agent is 4%-6% by mass, and the content of the catalyst is 1%-2% by mass. The graphene oxide is introduced into the pour-point depressing paraffin inhibitor provided by the invention, the size nanocrystallization is easy to prevent the formation of wax crystals in crude oil, the pour-point depressing effect is good, and the crude oil is conveniently exploited from a shaft and transported by a crude oil pipeline.

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

The invention relates to the technical field of lubricating oil, and discloses a low-temperature-resistant lubricating oil composition and a preparation method thereof. Mineral oil, modified polymethacrylate, a dispersing agent, an antioxidant and an oil defoaming agent are stirred and mixed and then filtered, and the low-temperature-resistant lubricating oil composition is obtained. The cross-linking agent enables polymethacrylate to form a light cross-linked structure, and stress can be dispersed during shearing; nitrogen atoms in triazinyl, pyridyl, pyrrolidone and Mannich base structures serve as hydrogen bond receptors, the hydrogen bond interaction with hydroxyl on a polymethacrylate molecular chain is enhanced, a physical cross-linked network is formed, and the shear resistance is further improved; in the modified low-temperature-resistant monomer, the glass-transition temperature can be remarkably reduced by high flexibility of silicon oxygen bonds in long straight-chain alkyl and silane groups, so that a molecular chain can still move at a low temperature, and the low-temperature fluidity of the lubricating oil is improved; the cyclic structure of cyclohexyl can effectively interfere with the ordered arrangement of wax crystals, reduce the pour point of the lubricating oil and improve the low-temperature fluidity.

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 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 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 invention belongs to the technical field of petrochemical engineering, and particularly relates to a method for producing transformer oil and bright stock from non-naphthenic oil. The method for producing transformer oil and bright stock from non-naphthenic oil comprises the following steps: raw oil firstly enters a first hydrogenation unit for hydrofining and hydrocracking reaction, then enters a second hydrogenation unit, and sequentially passes through an isomerization pour point depressing reactor, an isomerization cracking reactor and a finishing reactor to obtain secondary hydrogenated oil; and finally fractionating to obtain the transformer oil and bright stock. According to the method for producing the transformer oil and the bright stock from the non-naphthenic oil, the low-value non-naphthenic oil is taken as a raw material, and high-selectivity isodewaxing and cracking of the hydrocracking tail oil are realized by virtue of two hydrogenation units, so that the pour point lt can be obtained; and meanwhile, the high-quality bright stock is produced, and the economic benefit of the product is high.

This invention belongs to the field of petroleum processing technology, and specifically relates to a production apparatus and method for low-pour-point base oil for aviation hydraulic oil. The production apparatus and method for low-pour-point base oil for aviation hydraulic oil includes the following steps: Hydrorefining of the oil, where the feedstock oil undergoes hydrodesulfurization and dearomatization in a two-stage series process to produce hydrorefined oil with <1% aromatics and <1 mg / kg sulfur content; Fine fractionation of the oil, specifically: the hydrorefined oil is finely fractionated in a fractionation tower to obtain hydrorefined distillate oil at 230℃~280℃; Molecular sieve dewaxing, specifically: the 230℃~280℃ hydrorefined distillate oil is subjected to deep removal of n-alkanes using a 5A molecular sieve, lowering the oil's pour point to below -75℃, producing low-pour-point, low-aromatic aviation hydraulic oil base oil. This invention uses a combined process of "low-pressure hydrorefining-molecular sieve dewaxing" to produce a low-sulfur, low-aromatic, low-pour-point base oil with less than 1% aromatics. The production method has the advantages of low investment and ease of implementation.

This invention provides a method for preparing a wax-inhibiting pour point depressant and the wax-inhibiting pour point depressant itself, relating to the field of petroleum extraction technology. The method for preparing the wax-inhibiting pour point depressant provided by this invention includes the following steps: dissolving long-chain α-olefins, long-chain acrylates, and maleic anhydride separately in an organic solvent, and adding a polymerization initiator to the organic solvent to carry out a polymerization reaction, forming a target polymer after the reaction; mixing the target polymer with a sodium hydroxide solution to carry out a hydrolysis reaction, obtaining the wax-inhibiting pour point depressant after the reaction. This invention provides a method for preparing a wax-inhibiting pour point depressant and the wax-inhibiting pour point depressant itself. The wax-inhibiting pour point depressant prepared by this method can improve crude oil production efficiency and reduce production costs.

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 invention relates to the technical field of liquid cooling, in particular to an insulating coolant and an immersed coolant, and provides the insulating coolant and a preparation method thereof, the insulating coolant has environmental protection property and high performance, and the performance bottleneck of the prior art is broken through by adopting a brand new technical process and route: the combination of a low pour point and a high flash point is realized to adapt to an extreme temperature scene; the heat dissipation efficiency and the equipment safety are improved by optimizing the heat conductivity and the insulativity, and finally the core problems of environmental pollution, poor low-temperature fluidity, flammability and explosion, insufficient chemical stability and the like of the traditional cooling liquid are solved. A fluorine-containing group is introduced into a [(CF3) 2SiO] structural unit molecule, so that the chemical structure and physicochemical properties of liquid are changed, for example, the surface energy is reduced, the hydrophobicity is improved, the chemical corrosion resistance is enhanced and the like, and the requirement of the liquid as an insulating coolant can be met.

The application belongs to the technical field of shock absorber oil, and particularly relates to a silicon-based shock absorber oil for racing cars and a preparation method thereof. The silicon-based shock absorber oil for racing cars comprises, by mass percentage, 50-60 parts of silicone oil, 40-50 parts of base oil, 3-6 parts of a viscosity index improver, 0.2-0.5 parts of an extreme pressure anti-wear agent, 0.2-0.5 parts of a pour point depressant, and 0.2-0.5 parts of an antioxidant. The extreme pressure anti-wear agent comprises thiazolyl disulfide dimers and poly-methyl acrylate modified nanoscale spherical boron nitride. The silicon-based shock absorber oil for racing cars has excellent viscosity-temperature performance, shear stability, heat resistance, wear resistance, corrosion resistance and high-temperature foam resistance.

A method for preparing an environmental-friendly rubber oil, including: conducting extraction in an extraction tower, where a primary extraction solvent is introduced into an upper section of the extraction tower, a raw oil is introduced into a middle-lower section of the extraction tower, and a secondary extraction solvent is introduced into a lower section of the extraction tower; subjecting a material at a bottom of the extraction tower to solvent recovery to obtain a secondary extract oil; mixing a substance flowing out from a top of the extraction tower, a solubilizer and a part of the primary extraction solvent, cooling to −15° C. to 10° C., and filtering to obtain a wax paste and a filtrate; subjecting the wax paste to heating evaporation and solvent recovery to obtain a wax; and subjecting the filtrate to heating evaporation and solvent recovery, obtaining the environmental-friendly rubber oil.

The invention belongs to the technical field of lubricating oil, and particularly relates to a lubricating oil composition with a long oil change period as well as a preparation method and application thereof. The lubricating oil composition disclosed by the invention is prepared from the following components based on the total weight of the lubricating oil composition: 0.8 to 1.8 percent of a metal detergent, 1.5 to 2.5 percent of an ashless dispersant, 0.5 to 1.3 percent of an antioxidant and antiwear agent, 0.1 to 0.8 percent of an auxiliary antioxidant, 5 to 10 percent of a viscosity index improver, 0.2 to 0.5 percent of a pour point depressant, 0.001 to 0.01 percent of an anti-foaming agent and the balance of base oil. The lubricating oil composition disclosed by the invention passes a program IIIE engine bench test in the SJ standard requirement, the performance meets the SJ index requirement, the test time is prolonged by 40% compared with the standard time, and the lubricating oil composition has excellent volatile resistance and less engine oil consumption and meets the requirement of a gasoline engine generator for a long oil change period of 150h in the actual use process.

This invention discloses a method for producing base oil. The raw material is mixed with hydrogen and then fed into a graded hydroisomerization dewaxing reactor. The mixture sequentially passes through a protective agent layer and a catalyst layer for hydroisomerization. The resulting catalytic product undergoes boiling point trimming to obtain base oil with a fraction exceeding 340°C. Along the flow path, the total acid content of the catalyst first increases and then decreases, and the molar percentage of acid in the total acid content also first increases and then decreases. The reaction temperature of the protective agent layer is lower than that of the catalyst layer, and the reaction temperature within the catalyst layer first increases and then remains constant or decreases. This invention, by using a specifically graded hydroisomerization dewaxing reactor and setting different temperature zones, produces base oil with higher yields, lower sulfur and nitrogen content, and effectively reduces the low-temperature performance (pour point and cloud point) of the base oil, resulting in a higher viscosity index and improved base oil quality.

This invention belongs to the field of coolant technology, specifically relating to a coolant and its application in an immersion liquid-cooled energy storage system. The coolant, by weight, comprises 80-95 parts base oil, 1-5 parts thermally conductive nanoparticles, 0.5-2 parts composite dispersant, 0.3-1 part composite corrosion inhibitor, 0.1-0.5 parts antioxidant, 0.2-0.5 parts pour point depressant, and 0.01-0.05 parts defoamer. The base oil is a mixture of polyalphaolefin and synthetic ester, and the composite dispersant is a compound of polyisobutylene succinimide and Mannich base dispersant. Aging tests show that this coolant exhibits high thermal conductivity retention, low acid value increase, and low corrosion rate. The coolant of this invention can effectively maintain the dispersion stability of nanoparticles in the environment of precipitates from sealing materials, extending the fluid change cycle.

The invention belongs to the technical field of lubricating oil, and particularly relates to an energy-saving engine oil composition and application thereof. The engine oil composition is prepared from the following raw material components: base oil, a clearing agent, an ashless dispersant, a phenolic ester type amine antioxidant, an anti-wear agent, a viscosity index improver, a pour point depressant, an ionic liquid additive and an anti-foaming agent, wherein the ionic liquid additive is a quaternary ammonium salt-containing ester anti-wear agent, and the chemical structural formula of the ionic liquid additive is as follows: the composition is prepared by selecting an engine oil complexing agent, a viscosity index improver styrene copolymer, a pour point depressant and ionic liquid from the base oil which is III type base oil, PAO type base oil or a mixture of the III type base oil and the PAO type base oil. The catalyst has the characteristics of low phosphorus, low sulfur and low ash content. The normal lubrication working condition of the engine oil is met, the abrasion resistance of the engine oil is improved, and a good energy-saving effect is achieved.

The invention discloses a crude oil flow modifier and a preparation method thereof, and belongs to the technical field of oilfield development. An active component in the crude oil flow modifier is a quadripolymer generated through reaction of octadecyl acrylate, maleic anhydride, cardanol and acrylamide, alkyl long chains in octadecyl acrylate and cardanol can prevent wax crystals from forming a three-dimensional network structure through adsorption and eutectic effects, and the purpose of dispersing the wax crystals is achieved; oxygen atoms in octadecyl acrylate and maleic anhydride, benzene rings and hydroxyl in cardanol and acylamino in acrylamide can hinder asphaltene aggregation through the effects of pi-pi conjugation, hydrogen bonds, steric hindrance and the like, so that the effect of dispersing asphaltene is achieved, and finally viscosity reduction and pour point depression of the high-wax and high-asphaltene crude oil are achieved.

A wetting agent composition for drilling a borehole includes a wetting agent including unsaturated fatty acids and at least some saturated fatty acids, and a wax inhibitor formulated and configured to inhibit the formation of wax crystals that agglomerate and gel in the wetting agent composition, wherein the wetting agent composition exhibits a pour point lower than about 0°C. Related methods of forming a borehole and related drilling fluids are also disclosed.

The present invention relates to a specific combination of esters, a composition comprising it, and its uses as a lubricant and / or liquid dielectric coolant.

The invention relates to the technical field of cutting oil, and discloses titanium alloy trace cutting oil and a preparation method thereof.The titanium alloy trace cutting oil comprises synthetic base oil, an extreme pressure anti-wear agent, an antioxidant, a copper corrosion inhibitor, an oil mist resisting agent and a pour point depressant; the viscosity of the synthetic base oil at 40 DEG C is 2-8 cSt; the viscosity of the titanium alloy trace cutting oil at 40 DEG C is 8-12 cSt. By selecting the low-viscosity synthetic base oil and adding the high-molecular flowability improver, the overall viscosity of the oil product is remarkably reduced, the low-temperature flowability and the atomization performance of the oil product are improved, and the oil product can smoothly pass through a fine spray head and a pipeline in a minimal quantity lubrication system; and the problem of nozzle blockage caused by high viscosity and poor flowability of the oil product is effectively solved.

The application discloses a hydrogen fuel engine oil composite additive composition, which comprises 3.0-5.0% high-alkali-value magnesium sulfonate, 12.0-20.0% low-alkali-value calcium sulfonate, 3.0-4.0% high-alkali-value calcium sulfide alkyl phenol, 2.0-5.0% amine type antioxidant, 2.0-5.0% phenol type antioxidant, 2.0-5.0% alpha-naphthylamine, 1.5-3.0% dibutyl dithiocarbamic acid ester, 1.5-3.0% anti-wear agent, 0.2-0.5% fatty amide, and the rest is ashless dispersant. The application further discloses a hydrogen fuel engine oil composition, which comprises 14.4-15.5% composite additive composition, 7.0-9.0% tackifier, 0.2-0.5% pour point depressant, and the rest is base oil. The composite additive improves the demulsification performance of the hydrogen fuel engine oil under high-temperature and high-pressure conditions, and further improves the water separation property and other comprehensive use performances of the oil product.

The invention relates to the technical field of diesel additives, and particularly discloses a multi-effect composite diesel additive and a preparation method thereof. The additive comprises the following components in parts by weight: 7-11 parts of an anti-wear agent, 5-8 parts of a cetane number improver, 4-6 parts of a clearing agent, 2-3 parts of an antioxidant, 3-4 parts of a solubilizer, 3-4 parts of a pour point depressant, 1-2 parts of a preservative and 4-7 parts of a multifunctional additive. The invention also provides a preparation method of the composition. All the components act together to achieve the multiple effects of improving the combustion quality, reducing emission, strengthening lubrication and the like, in addition, the prepared auxiliary agent integrates multiple functions, and the oil phase adaptability and the functional strength can be guaranteed.

A working oil composition for shock absorbers, which contains the following components (A) and (B): (A) an ester base oil having a pour point of-45 DEG C or less and a 10% distillation temperature of 300 DEG C or more as determined by the gas chromatography distillation test method specified in JIS K 2254: 1998; and (B) zinc dialkyl dithiophosphate.

The invention relates to the field of lubricating oil, in particular to an anti-wear ionic liquid additive, a lubricating oil composition and preparation and application of the lubricating oil composition. The lubricating oil composition is prepared from the following components in parts by mass: 2.2 to 3.8 parts of a magnesium salt detergent, 3 to 4.2 parts of an anti-wear ionic liquid additive, 1.8 to 3 parts of an amine antioxidant, 1 to 1.5 parts of a phenol antioxidant, 4.8 to 5.8 parts of a dispersing agent, 0.8 to 1.5 parts of an anti-rust agent, 0.2 to 0.7 part of a pour point depressant, 0.02 to 0.06 part of a composite anti-foaming agent and 78.0 to 85.5 parts of base oil, wherein the anti-wear ionic liquid additive is prepared by mixing N-trioctyl hexadecyl ammonium and 1-sulfonic acid hexyl succinate. The lubricating oil composition provided by the invention can improve the knocking phenomenon existing in the hydrogen engine.

The invention provides a polymer type anti-wax pour point depressant and a preparation method thereof.The preparation method comprises the steps that long-carbon-chain alpha-olefin, short-carbon-chain acrylics, maleimide and 4-allyl anisole are dissolved in a solvent, then an initiator is added for a reaction, and the polymer type anti-wax pour point depressant is obtained; the prepared polymer type paraffin and pour point depressant can effectively act on wax crystals, such as a long carbon chain, an imide group, an ether bond, an ester group and the like, and has more acting groups and stronger acting effect compared with a conventional paraffin inhibitor, and the prepared polymer type paraffin and pour point depressant solves the problems of poor paraffin inhibition effect, poor pour point depression effect and high toxicity of a common oil-based polymer paraffin and pour point depressant.

The invention relates to wide-temperature-range modified natural ester insulating oil and a molecular structure design method thereof, and the molecular structure of the wide-temperature-range modified natural ester insulating oil with different ester chain structures is obtained by converting natural ester into mixed fatty acid methyl ester with the chain length of C8-C18, then blending the proportion and introducing groups for molecular modification. According to the design method, natural ester insulating oil molecules with different ester chain structures are constructed, and the influence rule of the fatty acid methyl ester carbon chain length proportion, the C = C double bond number and the modification group on the flash point and pour point of the natural ester insulating oil is obtained; the obtained wide-temperature-range modified natural ester insulating oil not only keeps the high flash point of the natural ester insulating oil, but also has the characteristic of low pour point, so that the working temperature range of the natural ester insulating oil is widened, and the defect that a natural ester insulating oil transformer operates under high-altitude, cold regions and extreme weather conditions is overcome; the preparation process is simple, reaction conditions are mild, the environment is not polluted, and batch production is easy.

The invention relates to the technical field of coal anti-freezing solutions, in particular to a novel environment-friendly railway coal transportation anti-freezing agent. The novel environment-friendly anti-freezing agent comprises the following raw materials in percentage by mass: 20-30% of glycerol, 17-24% of a pour point depressant, 4-7% of a corrosion inhibitor and the balance of water. Compared with a traditional anti-freezing solution, the raw materials of the anti-freezing solution are cheap and easy to obtain, and the anti-freezing solution can be prepared in a normal-temperature state; the corrosion to metal is small, and high-toxicity and environment-harmful substances are not contained; the anti-freezing agent is stable in property, moderate in viscosity and lasting in anti-freezing effect, and does not need to be supplemented during transportation and storage; and the freezing point can reach-43 DEG C to-55 DEG C.

The present invention relates to a composition comprising specific esters and its uses as a lubricant and / or a liquid dielectric coolant.