53results about How to "High base number" patented technology

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

The invention discloses special lubricating oil for a fuel gas engine of a public transport automobile. The special lubricating oil is prepared from blended base oil, binary ethylene-propylene rubber, polymethacrylate, alkylphenol calcium sulfide, high-base-number calcium alkylbenzenesulfonate, polyisobutylene succinimide, boronated polyisobutylene succinimide, alkylated phenyl-alpha-naphthylamine, p,p'-dioctyl diphenylamine, a hindered phenol type antioxidant, dialkyl molybdenum dithiocarbamate, copper nanoparticle anti-wear additives, methyl silicone oil and thiadiazole polysulfide. According to the lubricating oil composition oil product, the sulfate ash content is lower than 0.5%, the content of phosphorus is lower than 0.03%, and the base number is 3-8mgKOH/g. According to the special lubricating oil for the fuel gas engine of the public transport automobile, aiming at the special requirements of the public transport automobile on engine oil, different additive varieties and charging sequences are adopted, so that physical and chemical indicators and use performance of the special lubricating oil are better than natural gas engine lubricating oil of the same grade, and the special lubricating oil has excellent cleaning and dispersion properties, lubricating property, abrasion resistance and oxidation resistance.

The invention relates to a high-base number metal detergent and a preparation method thereof. The preparation method comprises the following steps of: mixing and performing a neutralization reaction on a hydrocarbon solvent, neutral oil, naphthenic acid, water, alkylphenol and calcium hydroxide and/or calcium oxide; and adding methanol and the calcium hydroxide and/or the calcium oxide; introducing carbon dioxide to perform a carbonation reaction twice; and obtaining a product through an aftertreatment process. The product has an ultra-high base number and better anti-oxidation stability.

The present invention provides a novel process for quenching heat, scrubbing, cleaning and neutralizing the hot and dirty fossil fuel fired flue gas liberated by a fossil fuel fired boiler using the high temperature and high pressure present in fossil fuel fired boiler blow-down comprising the steps of quenching the fossil fuel fired flue gas by evaporating sufficient quantity of water from sea water/scrubbing liquid and mixing vapors thus generated with hot and dirty flue gas; using the high temperature and high pressure present in fossil fuel fired boiler blow-down (waste water) for atomizing/spraying high alkalinity sea water/scrubbing liquid on said flue gas to neutralize the acidic substances in said flue gas.

The invention provides a high-base-number naphthenic acid composite calcium-magnesium detergent, a preparation method thereof and a lubricating oil composition comprising the detergent. The preparation method of the high-base-number naphthenic acid composite calcium-magnesium detergent comprises the steps of mixing naphthenic acid, calcium oxide and/or calcium hydroxide with a solvent to have neutralization reaction, then adding magnesium oxide and/or magnesium hydroxide, introducing the carbon dioxide to have the carbonation reaction, adding an accelerant in the neutralization reaction and/or carbonation reaction, and collecting products. Compared with the traditional metal detergent product of calcium salt and magnesium salt and the corresponding lubricating oil composition, the high-base-number naphthenic acid composition and the lubricating oil composition containing the detergent have lower ash content, higher base number and better acid neutralization capacity, different problems in the compounding of different metal salt detergents can be avoided, the detergent of different calcium/magnesium ratios can be obtained, and the requirement of the top-grade lubricating oil can be met.

The invention discloses a lubricating oil clearing agent and a preparation method, the clearing agent and comprises the following raw materials by mass ratio: 1-4 parts of mono(terephthalate)alcohol ester-12, 1-3 parts of cutback oil, 7-15 parts of calcium hydrate, 0.15-0.5 parts of calcium chloride, 12-30 parts of solvent, 0.15-1.5 parts of methanol, 0.2-0.8 parts of water and 0.2-1 part of carbon dioxide. A preparation method comprises the steps of high alkalinity reaction and neutralization reaction. The lubricating oil clearing agent has good clean dispersibility and extremely strong corrosive acid neutralization capability, calcium carbonate particles in the lubricating oil clearing agent are uniformly distributed; in the whole reaction process, the preparation and treatment processes are simple, a high temperature processing technology is not required, the synthetic method is easily realized, most raw materials can be regenerated and have high biodegradability, and the clearing agent and synthetic method accord with green environmental protection requirement.

The invention provides a composite catalyst and a preparation method of nonyldiphenylamine. The composite catalyst comprises active clay, p-toluenesulfonic acid and active zinc oxide according to a mass ratio of 100:(0.1-5):(0.1-5). The composite catalyst can catalyze the alkylation reaction of diphenylamine and nonene, so the obtained nonyldiphenylamine product has light color, high viscosity and high base value, the residual content of diphenylamine in the product is low, and the performances of the product are greatly improved.

The invention relates to a preparation method of a lubricating oil detergent, and belongs to the technical field of lubricating oil detergent preparation. The lauryl sodium sulfate preparation method comprises the steps that magnesium aluminum hydrotalcite is modified with lauryl sodium sulfate and then added into alkali liquor, modification is conducted with an ethylenediaminetetraacetic acid complexing agent, and then drying is conducted to obtain powder; rice and yeast powder are sealed to be fermented, and fermentation liquor is collected, concentrated and then mixed with xylene, calcium hydroxide powder and calcium oxide powder to obtain suspension liquor; the modified powder is mixed with the suspension liquor, and after the pH value is regulated with ammonia water, the lubricating oil detergent can be obtained. The lubricating oil detergent prepared through the method is high in compatibility with lipid lubricating oil, the lubricating oil detergent prepared from the modified magnesium aluminum hydrotalcite not only can achieve the good detergency and dispersibility, the extremely high capacity of neutralizing corrosive acid and the high antioxidant property, but also cannot influence the color, luster and properties of base oil of the lubricating oil and has the high base number advantage, wherein the base number is higher than 330 mgKOH/g.

The invention discloses a bacterial strain medium and a preparation method thereof. The bacterial strain medium solves the problems of soft and loose states of the traditional bacterial strain medium, improves base hardness and is convenient for transport and storage. Because of matrix change, physical vibration and temperature difference adaptability are improved. The traditional medium tissue structure is changed so that matrix permeability is improved and mycelia growth oxygen demands are greatly satisfied. The matrix components are changed so that a bacterial strain quality guarantee period is prolonged. The bacterial strain medium changes nutrition components of the traditional medium, has comprehensive and reasonable nutrition, improves medium base number and effectively inhibits infectious microbes. Through use of needlebush particles and sawdust, a raw material source and an application scope are widened. Inoculation efficiency is improved and a bacterial strain cost is about 1/5 that of the traditional PDA medium.

The invention relates to a method for preparing liquidized butyl diphenylamine/octyl diphenylamine. The method comprises the following steps: mixing diphenylamine with C8 alkene according to a mole ratio of 1:1.35-1:3.2, adding 5 to 25% of catalyst and polymerization inhibitor, carrying out alkylation reactions for 0.5 to 20 hours at a temperature of 80 to 165 DEG C under a reaction pressure of 0.25 to 0.5 MPa; wherein the addition amount of the polymerization inhibitor is 60 to 180 ppm; then adding ending alkene, wherein the adding amount of the ending alkene is 10 to 40% of the molar weight of the diphenylamine; heating the reaction product, filtering, then subjecting the filtrate to reduced pressure distillation, collecting the solid catalyst for cycle use, collecting and recovering the alkene, returning the collected alkene to the reaction system, and collecting the liquid namely the liquidized butyl diphenylamine/octyl diphenylamine. The color of obtained product is lightened, the product is clear and transparent, the base number reaches 140 to 180, the content of residual diphenylamine is less than 1%, the conversion of diphenylamine is increased, the performance of the product on controlling the viscosity increasing is excellent, the catalyst can be repeatedly used, and no wastewater is discharged.

The invention provides an N-(2-hydroxyethyl)diethylenetriamine Schiff base catalyst, a preparation method thereof, and an application of the catalyst in the preparation of beta-isophorone. The preparation method of the catalyst comprises the following steps: 1) reacting diethylenetriamine with aromatic aldehyde to prepare a bis-Schiff base; and 2) reacting the bis-Schiff base compound with ethylene oxide to obtain the N-(2-hydroxyethyl)diethylenetriamine Schiff base. The invention also provides a method for preparing beta-isophorone from alpha-isophorone through an isomerization reaction underthe action of the Schiff base. The catalyst is simple to prepare and easy to industrialize. The prepared N-(2-hydroxyethyl)diethylenetriamine Schiff base has the advantages of high selectivity and high yield for the reaction of isomerizing alpha-isophorone to generate beta-isophorone, low generation possibility of byproducts, easiness in industrial production, and no corrosion to equipment.

The invention belongs to the field of engine lubricating oil and discloses synthetic supercharged methanol engine oil as well as a preparation method and an application thereof. 95-97 parts of synthetic base oil is added to a three-mouth flask provided with a stirring device and a water bath device and subjected to a water bath at the constant temperature of 60 DEG C, then 0.5-1 part of an amine antioxidant, 1-1.5 parts of an extreme-pressure anti-wear agent, 0.2-0.5 parts of a metal passivator, 0.3-0.5 parts of a metal detergent, 0.1-0.5 parts of an ashless dispersant and 0.1-0.2 parts of an anti-foaming agent are added and stirred, and the synthetic supercharged methanol engine oil is obtained. The synthetic supercharged methanol engine oil has the advantages that the viscosity index is high, the shear performance is good, the low-temperature performance is good, the base number is large, the lubricity, the anti-oxidation and anti-corrosion performance and the cleaning and dispersing effect are good, a preparation process is simple, the cost is low, application range is wide, and the like.

The invention relates to a heavy-loading CNG natural gas engine oil complexing agent and a preparation method and application thereof. The raw materials of the complexing agent comprise base zinc saltof dioctyl thiophosphate, super-alkali-value synthesis calcium sulfonate, alkylated diphenylamine, amidogen thioester, super-alkali-value synthesis magnesium sulfonate, high-molecular-weight ashlessdispersing agent and single alkenyl succinimide. The method comprises the steps that the raw materials are weighed, added to a blending kettle, heated to 60-70 DEG C, stirred for 2-3 hours at normal pressure and filtered, and the heavy-loading CNG natural gas engine oil complexing agent is obtained. The heavy-loading CNG natural gas engine oil complexing agent and the preparation method and application thereof have the advantages that the preparation method is easy to operate and the agent is easy to prepare. The complexing agent can distinctly meet the requirements in the second, third and fourth type of oil and is suitable for meeting the performance requirement of large-sized fixed and large-power mobile CNG natural gas engines.

The invention discloses polyester lubricating oil and a blending process thereof. The polyester lubricating oil comprises the following components in percentage by mass: 18-25 percent of PAO4 base oil, 38-44 percent of PAO6 base oil, 12-16 percent of polyol ester base oil, 10-12 percent of a tackifier, 0.2-0.5 percent of a pour point reducer, 0.7-1.2 percent of a friction modifier and 11.30001-12.70003 percent of a complexing agent, wherein the complexing agent comprises 8.0-8.5 mass percent of high-alkali number petroleum calcium sulfonate, 2.0-2.5 mass percent of zinc butyl octyl dithiophosphate, 1.3-1.7 mass percent of zinc dialkyl dithiophosphate and 0.0001-0.0003 percent of methyl silicone oil ester. The polyester lubricating oil disclosed by the invention can meet the performance of the traditional lubricating oil, is high in stability, can achieve the effects of reducing pollution emission and energy consumption and automatically repairing abrasion equipment and has an environment-friendly effect.