58 results about "Pour point" patented technology

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.

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

This invention relates to the field of lubricating oil technology, and more particularly to an engine oil composition with improved water resistance and its preparation method. The engine oil composition includes a complexing agent, a base oil, a viscosity index improver, and a pour point depressant. The complexing agent is a mixture of detergent, dispersant, zinc dialkyl dithiophosphate, antioxidant, friction improver, emulsifier retainer, and corrosion inhibitor. The emulsifier retainer is a polymethacrylate with an N-vinylpyrrolidone branched structure and / or a styrene-maleic anhydride polymer. The engine oil composition of this invention, by employing a specific complexing agent and mixing it with other functional additives, exhibits excellent formulation balance and compatibility, and can well meet the requirements of automobile manufacturers for the water resistance, fuel economy, and emission performance of hybrid engine oils.

The present application relates to the technical field of petroleum chemical catalyst, in particular to a hydrogenation shape selective cracking catalyst and its application method.The hydrogenation shape selective cracking catalyst comprises a carrier and an active metal component, the carrier comprises SAPO-11 molecular sieve, ZSM-23 molecular sieve and low-sodium small-pore pseudo-boehmite powder, and the active metal component comprises palladium, nickel, lanthanum and cerium;the content of SAPO-11 molecular sieve is 40-50 wt%, the content of ZSM-23 molecular sieve is 7-8.5 wt%, the content of palladium is 0.2-1.5 wt%, the content of nickel is 0.5-5.5 wt%, the content of cerium is 0.6-4%, the content of lanthanum is 2-7%, and the rest is low-sodium small-pore pseudo-boehmite powder, based on the total weight of the catalyst.The present application can produce transformer oil with a pour point less than-50 DEG C and high-quality bright oil products with a viscosity index greater than 110 and being transparent and free of flocculation at 15 DEG C.

The invention relates to a composition comprising a pyrolysis oil and a polymeric additive for reducing the pour point, viscosity, or both, of the pyrolysis oil. The invention also relates to a method of manufacturing said composition and to the use of a polymeric additive for reducing the pour point, viscosity, or both, of the pyrolysis oil. Furthermore, the invention relates to a method for transporting or storing a pyrolysis oil.

The application is suitable for the technical field of materials, and provides a modified polymethyl methacrylate type pour point depressant and a preparation method thereof, which comprises the following steps: dissolving polymethyl methacrylate in an organic solvent, adding a long-chain alkyl modifier, and fully reacting under stirring to obtain a modified liquid; adding an initiator to the modified liquid, and reacting at a temperature of 65-75 DEG C for 3-4 h, and then performing cooling, water precipitation, separation and drying treatment to obtain the product. The long-chain alkyl structure in the application can form a loose network by acting on crude oil hydrocarbon molecules, can reduce intermolecular forces to improve low-temperature fluidity, and can improve the oiliness to improve the physical properties of crude oil and reduce the freezing point. The synthesis process is mild and low in consumption, the molecular weight and distribution of the product can be accurately controlled, the use of harmful solvents is reduced, the green chemistry principle is met, the application is not only suitable for crude oil pour point depression, but also can be used for modification of other petroleum products, and the solid form is convenient for storage and transportation, has low leakage risk, is convenient to add, and can quickly respond to the pour point depression demand of oil fields.

A method for removing contaminants from a waste plastics pyrolysis stream containing the contaminants by introducing an effective amount of an additive thereto and separating the contaminants from the stream by a physical process, where suitable additives include, but are not necessarily limited to, crude oil demulsifiers, crude oil wax control additives, crude oil pour point reducers, dispersants / antifoulants, nanoscale metallic oxides, overbased metal oxide carbonates, and combinations thereof.

The present invention provides lubricant base oil and a preparation method therefor. The preparation method comprises: subjecting Fischer-Tropsch wax having a distillation range of 400-550°C to a hydroisomerization reaction under the action of a hydroisomerization catalyst, and then to a hydrofining reaction under the action of a hydrofining catalyst and rectification to obtain lubricant base oil, wherein the preparation of the hydroisomerization catalyst comprises the steps of: ZSM-48 seed crystal synthesis, ZSM-48 molecular sieve preparation, carrier forming, noble metal ion loading, calcining, etc. The hydroisomerization catalyst exhibits relatively high isomerization selectivity for Fischer-Tropsch wax having a distillation range of 400-550°C. Under the action of the hydroisomerization catalyst, the Fischer-Tropsch wax can be used to prepare lubricant base oil having a high viscosity index, a low pour point, and a low cloud point. The method for preparing the lubricant base oil not only has the advantages of high yield and a simple preparation process flow, but also can simultaneously produce 4cSt base oil and 6cSt base oil of relatively high quality.

The present application relates to the technical field of lubricating oil, and particularly relates to a special lubricating oil composition for gear box of port machinery equipment and a preparation method thereof.The preparation method of the present application comprises the following steps: preparing a graphene oxide lubricating additive by using graphene oxide and part of base oil; stirring uniformly extreme pressure anti-wear agent, rust inhibitor, antioxidant, demulsifier, pour point depressant, viscosity index modifier and the remaining part of base oil, then adding the graphene oxide lubricating additive and anti-foaming agent, continuing to stir and mixing uniformly to obtain the special lubricating oil composition for gear box of port machinery equipment.The lubricating oil composition prepared by the preparation method of the present application has excellent load-carrying and anti-wear performance, unique anti-micro-pitting performance, excellent oxidation resistance, low-temperature fluidity and water separation performance and the like, and is suitable for gear box lubrication working under harsh working conditions such as heavy load, impact load and low-temperature environment.

The application discloses a catalyst for producing low-haze lubricating oil base oil and a preparation method and application thereof. The catalyst contains hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve, and the mass content of the ZSM-22 molecular sieve in the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve is 10-95%, preferably 15-90%. The preparation method of the catalyst comprises the following steps: (1) preparing hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve; (2) mixing, shaping, drying and calcining the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve prepared in the step (1), macroporous alumina and a binder to obtain a carrier; and (3) introducing noble metal active components into the carrier obtained in the step (2) and obtaining the final catalyst after drying and calcining. The catalyst prepared by the method has high weak acid content and appropriate strong acid content, can improve the liquid yield, and greatly reduces the haze point of the lubricating oil base oil.

The present application relates to the field of industrial explosive, and discloses a porous granular ammonium oil explosive and a preparation method thereof.The porous granular ammonium oil explosive comprises an ammonium oil phase and porous granular ammonium nitrate, and the content of the ammonium oil phase is 4-7 wt% based on the weight of the porous granular ammonium oil explosive; the ammonium oil phase comprises Fischer-Tropsch synthesis liquid paraffin, Fischer-Tropsch cracking minus one-line oil, Fischer-Tropsch hydrogenation heavy oil and optional pour point depressant; the Fischer-Tropsch hydrogenation heavy oil is selected from one or two or more of Fischer-Tropsch cracking minus two-line oil, Fischer-Tropsch cracking minus three-line oil and Fischer-Tropsch hydrogenation cracking tail oil; the total weight of the ammonium oil phase is 100 wt%, the content of the Fischer-Tropsch synthesis liquid paraffin is 60-95 wt%, the content of the Fischer-Tropsch cracking minus one-line oil is 2-30 wt%, the content of the Fischer-Tropsch hydrogenation heavy oil is 2-5 wt%, and the content of the pour point depressant is 0-0.5 wt%.The porous granular ammonium oil explosive has high flash point, low pour point and low freezing point, is safer and has longer storage time.

The application relates to a preparation method of a poly-alpha-olefin pour point depressant, which comprises the following steps: obtaining a mixed hydrocarbon component by distillation cutting and refining Fischer-Tropsch synthesis oil, the average carbon number of alpha-olefins in the mixed hydrocarbon component being 10.2-16.5, and then polymerizing to obtain the poly-alpha-olefin pour point depressant under the catalysis of a metallocene catalyst system. The application also relates to a poly-alpha-olefin pour point depressant. The preparation method has the advantages of high polymerization activity, small catalyst consumption, simple post-treatment, environmental protection and the like; and the prepared pour point depressant has the characteristics of moderate molecular weight, narrow molecular weight distribution and good pour point depressing effect.

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

The present invention relates to a composition comprising pyrolysis oil and a polymer additive for reducing the pour point, the viscosity, or both the pour point and the viscosity of the pyrolysis oil. The present invention further relates to a method of manufacturing said composition, the use of a polymer additive for reducing the pour point, the viscosity, or both the pour point and the viscosity of the pyrolysis oil. The present invention further relates to a method of transporting or storing pyrolysis oil.

This invention discloses a gear oil composition and its preparation method. The gear oil composition of this invention comprises an antioxidant, an extreme pressure anti-wear agent, a metal corrosion inhibitor, a rust inhibitor, a pour point depressant, and a lubricating oil base oil. The lubricating oil base oil comprises a phenolic ester derivative and a mineral base oil. The structure of the phenolic ester derivative is shown in formula (I), wherein the definitions of each group are provided in the specification. The gear oil composition of this invention exhibits excellent lubrication performance, oxidation resistance, and low-temperature flow performance, meeting the requirements of GL-5 and above extreme pressure heavy-duty gear oils.

The present invention relates to the technical field of petroleum exploitation and provides a preparation method for a wax inhibitor and pour point depressant, and a wax inhibitor and pour point depressant. The preparation method for a wax inhibitor and pour point depressant provided by the present invention comprises the following steps: separately dissolving a long-chain α-olefin, a long-chain acrylate, and maleic anhydride into an organic solvent, and adding a polymerization initiator to the organic solvent to perform a polymerization reaction to form a target polymer; and mixing the target polymer with a sodium hydroxide solution to perform a hydrolysis reaction to obtain the wax inhibitor and pour point depressant. The present invention provides a preparation method for a wax inhibitor and pour point depressant, and a wax inhibitor and pour point depressant. The wax inhibitor and pour point depressant prepared by means of the method can improve crude oil production efficiency and reduce production costs.

The invention provides pentaerythritol ester base oil and a preparation method thereof. The preparation method comprises the following steps: S1, mixing pentaerythritol, mixed acid and a decolorizing agent, and carrying out autocatalytic esterification under a negative pressure condition to obtain a pentaerythritol ester base oil crude product; s2, filtering the pentaerythritol ester base oil crude product, and then performing deacidification and dehydration treatment to obtain pentaerythritol ester base oil; wherein the mixed acid is composed of monobasic fatty acid, dibasic fatty acid and aromatic acid in a molar ratio of (50-70): 1: (2-5); the molar ratio of the pentaerythritol to the mixed acid is 1: (3.8-5.2). The pentaerythritol ester base oil provided by the invention has a high flash point, a low pour point and a wide use temperature range.

This invention provides a lubricating oil and its application. The lubricating oil includes a base oil, detergent, antioxidant, dispersant, friction reducer, pour point depressant, and viscosity index improver. The friction reducer includes a carbamate and a phosphate ester as shown in Formula 1. The carbamate includes dibutyl dithiocarbamate, with a mass percentage of 0.2% to 0.5% for the dibutyl dithiocarbamate and a mass percentage of 0.1% to 0.3% for the phosphate ester. This lubricating oil possesses excellent high-temperature detergency, soot dispersibility, oxidation resistance, wear resistance, and low friction characteristics, and can simultaneously meet the lubrication requirements of engines and transmission systems, thus achieving standardization of oils used in engines and transmission systems.

The invention discloses a method for preparing a paraffin hydrocarbon shape-selective isomerization catalyst. The method comprises the following steps: 1) active ingredients are loaded to a macropore pore-forming agent, then the active ingredients are dried to obtain a modified pore-forming agent; and 2) a TON-type small grain molecular sieve, a refractory oxide, the modified pore-forming agent, a peptizing agent and water are mixed, a mixture is shaped, dried, and calcinated to obtain the catalyst product. The method has the advantages of simple process flow and low cost, and the catalyst product used in a paraffin hydrocarbon shape-selective hydrocarbon reaction has the characteristics of high target product yield and low pour point.

1. Name of the product in this design: Automatic Pour Point Tester for Petroleum. 2. Application of this design: This design is used for the automatic detection and analysis of the pour point and freezing point of petroleum and petroleum products. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a high-freeze-resistant liquid lubricating oil and its preparation method, comprising the following ingredients by weight percentage: 70-82 wt% synthetic base oil, 5-10 wt% modified mineral oil, 8-15 wt% composite low-temperature resistant additive, and 3-7 wt% auxiliary functional additive; wherein the synthetic base oil is a compound of polyalphaolefin (PAO-4), pentaerythritol ester, and polyether polyol; the composite low-temperature resistant additive is composed of a modified pour point depressant, a novel viscosity index improver, and a low-temperature flow promoter; and the auxiliary functional additive is composed of an anti-wear agent, an antioxidant, a dispersant, and a defoamer. Through innovative ingredient compounding design, the technical pain points of limited antifreeze effect and poor ingredient synergy in existing low-temperature resistant lubricating oils are solved. By using ternary synthetic base oil, graphene-modified mineral oil, and ternary composite low-temperature resistant additive, a synergistic balance of ultra-low pour point, high compatibility, strong dispersibility, and low cost is achieved.

This invention belongs to the field of petroleum extraction technology and discloses a crude oil pour point testing device, testing system, and testing method. The crude oil pour point testing device includes a shell, a float assembly, a temperature control assembly, and an excitation output assembly. The shell has a sealed cavity configured to hold the oil sample to be tested. The float assembly includes a float body, an inertial sensing element, and a temperature sensing element. The inertial sensing element is integrated inside the float body, which is placed inside the cavity and floats on the surface of the oil sample. The inertial sensing element can detect the motion response of the float body in the oil sample. The temperature sensing element is connected to the float body and can extend into the oil sample to measure its temperature. The temperature control assembly is connected to the shell and can adjust the temperature of the oil sample inside the cavity. The excitation output assembly is connected to the shell and outputs rotational excitation to the shell. This crude oil pour point testing device has a simple structure, precise temperature control, high testing efficiency, and high detection accuracy.

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