12 results about "Dispersit" patented technology

This invention discloses a composite unblocking agent for oil and gas fields and its preparation method, belonging to the field of chemical unblocking agent production technology in petrochemicals. This method aims to solve the technical problem of large batch-to-batch variations in product performance caused by the crude control of key parameters and reliance on manual experience in traditional preparation processes. The key to its technical solution lies in achieving precise preparation through step-by-step dynamic control: firstly, the chelating agent is pretreated with alkali in a first reactor while simultaneously controlling the temperature and stirring speed; then, the pretreated mixture is transferred to a second reactor, and a penetrant is added sequentially under controlled conditions to obtain a first mixture; next, a scale inhibitor and dispersant is added under controlled weight loss balance to obtain a second mixture; finally, a programmed segmented heating reaction is performed to obtain the final product. This method is mainly used for the efficient and stable preparation of a composite unblocking agent for removing inorganic scale from pipelines and equipment in oil and gas fields.

The application relates to the technical field of lubricating oil additives, and discloses a diesel engine oil additive with cleaning and dispersing effects and a preparation method thereof.The diesel engine oil additive comprises the following components in parts by weight: polyisobutylene succinic anhydride-based ashless dispersant 40-60, alkyl calcium salicylate detergent 20-30, organic molybdenum anti-wear agent 5-10, antioxidant 2-5, metal deactivator 1-3, and the like.The diesel engine oil additive is prepared by compounding the polyisobutylene succinic anhydride-based ashless dispersant and the alkyl calcium salicylate detergent, and combining the organic molybdenum anti-wear agent, the antioxidant and other additives, so that the soot, the carbon deposit and the oil sludge in the diesel engine can be efficiently cleaned and dispersed, the diesel engine oil has excellent antioxidant and anti-wear properties, the service performance of the diesel engine oil can be remarkably improved, and the service life of the engine is prolonged.The preparation method is simple in process, mild in reaction condition, does not need complicated equipment and harsh reaction condition, the production cost is controllable, and the method is suitable for industrial large-scale production.

The group of inventions relates to components of combined pour point depressant and dispersant additives for diesel fuel and to methods for producing same, and can be used in the chemical and oil refining industries. The group of inventions consists in a dispersant for a combined pour point depressant and dispersant additive and a method for producing said dispersant, wherein the dispersant is a 50 wt.% solution of two components, the first component being an alkyl phenol formaldehyde resin obtained by polycondensation of a mono-alkylphenol and formaldehyde, and the second component being the product of a reaction between a carboxylic acid and a mono- or dialkylamine, and the first and second components are present in a ratio of 1:[1-10]. The technical result toward which the group of inventions is directed is an improvement in the overall performance characteristics of diesel fuel when the proposed dispersant in used in a combined pour point depressant and dispersant additive.

This invention provides a carbon-free lubricating oil with sludge-removing function and its manufacturing method, comprising: a polyether base oil containing polyetheramine, polyalphaolefin (PAO), and ester oil; an ashless dispersant containing a polyisobutylene-based ashless dispersant with a number average molecular weight of 2000-3500; a molybdenum-containing friction modifier; a hindered phenolic antioxidant; and auxiliary functional additives. Through the synergistic effect between the components, metal detergents are eliminated, ash deposition is prevented from the source, and a clean lubrication system with ashless, low wear, and high oxidation resistance is constructed. Through a four-fold mechanism of "dissolution-dispersion-inhibition-repair," the system simultaneously achieves gentle removal of existing carbon deposits and sludge and strong prevention of new deposits, supports stable operation over ultra-long oil change intervals, and constructs a self-reinforcing cleaning ecosystem that becomes cleaner with use.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and an amount greater than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) at least one boronized polyisobutylene succinimide (PIBSA-PAM) dispersant in an amount of 0.25% to 8.0% by weight of the composition to provide the composition with 30 to 1000 ppm by weight of total boron, wherein the boronized PIBSA-PAM dispersant is selected from lower molecular weight PIBSA-PAM dispersants (Mn less than 1600 g / mol), higher molecular weight PIBSA-PAM dispersants (Mn 1600 g / mol or greater), and combinations thereof; iii) At least one over-alkaline metal-containing detergent having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500 and being contained at a treatment level providing the composition with total metals between 100 and 5000 ppm by weight and total soaps between 0.15% by weight and 8.0% by weight; and iv) the lubricating oil composition having a total sulfate ash content less than or equal to 2.5% by weight, a total phosphorus level less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, wherein X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) providing the HICE with hydrogen-containing fuel; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for undesirable combustion events in HICE are also provided.

The invention discloses an ultralow-density proppant based on drilling cutting solid waste filling and a preparation method thereof.The preparation method comprises the following steps that S1, drilling cutting solid waste is obtained and pretreated, and drilling cutting nano-particles are obtained; s2, performing hydrophobic modification on the drilling cutting nano-particles to obtain the drilling cutting nano-particles subjected to hydrophobic modification; s3, a water-phase solution and an oil-phase solution are prepared respectively, the water-phase solution comprises water and a dispersing agent, and the oil-phase solution comprises a monomer, an initiator, a cross-linking agent and the drilling cutting nano-particles subjected to hydrophobic modification; and S4, dropwise adding the oil phase solution into the water phase solution, heating to 80-90 DEG C, and reacting for 2-4 hours to obtain the ultralow-density proppant. The ultralow-density proppant can be prepared from the drilling cutting solid waste, the strength, temperature resistance and long-term service stability of the proppant can be synchronously improved through the ultralow-density proppant, and technical support is provided for development of unconventional oil and gas resources.

The application discloses a marine oil spill settlement prediction and layered treatment optimization method based on light regulation, and belongs to the technical field of marine biological water treatment. The application constructs a combined microbial culture system of marine photosynthetic microorganisms and heterotrophic oil-degrading bacteria, measures the polysaccharide and protein content of extracellular polymers under different light intensities, establishes a quantitative regulation model between light intensity and the yield of extracellular polymer components, measures the oil-particle aggregate settlement rate, combines the characteristic parameters of extracellular polymers and environmental parameters to train a settlement rate prediction model, determines the demarcation depth of the light transmission layer and the lightless layer, predicts the settlement rate of each layer, and differentially configures the dispersant application amount of different layers according to the settlement rate. The application takes light as a core regulation variable and introduces it into the oil spill settlement prediction system, significantly improves the prediction accuracy of the settlement rate, improves the oil spill treatment effect, and provides scientific and accurate technical support for marine oil spill emergency response.

This invention relates to the C10L9 / 10 field of IPC classification, and particularly to a coal-saving catalyst for thermal power plants and its preparation method. The coal-saving catalyst, by mass percentage, comprises the following raw materials: 5-20% gluconate, 10-20% diol, 5-13% citrate, 3-10% oxygen-containing free radical organic matter, 1-3% molasses, 0.1-1% dispersant, and deionized water to make up the balance. The coal-saving catalyst prepared in this application has excellent effects in promoting coal combustion, reducing burnout, improving combustion efficiency, and reducing pollutant emissions. It also effectively enhances the mutual wetting effect of the coal system and strengthens the penetration of the coal-saving catalyst within the coal system. It is suitable for promotion in the thermal power field and has broad development prospects.

This application provides a method for preparing a drilling fluid plugging and sealing agent based on oily sludge, comprising the following steps: reacting oily sludge, a crosslinking agent, and a catalyst in an inert gas atmosphere to obtain a crosslinking product; reacting the crosslinking product again in an air atmosphere to obtain a modified material; and mixing the modified material with a plugging and sealing material matrix and a dispersant to obtain the final product. This application also provides an oily sludge-based drilling fluid plugging and sealing agent and a drilling fluid. Using oily sludge as raw material, this application not only solves the environmental and safety problems caused by oily sludge treatment and realizes its high-value utilization, but also features a simple treatment process. The prepared oily sludge-based drilling fluid plugging and sealing agent provides retention properties for the plugging agent, helping to improve formation plugging efficiency and pressure bearing capacity. Experimental results show that the oily sludge-based drilling fluid plugging and sealing agent provided by this application has a pressure bearing capacity of over 6 MPa in clean water or white oil at 180–200℃.