Viscosity-reducing additive for heavy oil fractions

FIELD: oil and gas industry.

SUBSTANCE: invention describes a viscosity-reducing additive for heavy oil fractions - tar oils, which is represented by sodium carboxylate being the waste of the vegetable oil production added to heavy oil fractions - tar oils in the quantity of 20-50 wt %.

EFFECT: reducing viscosity of heavy oil fractions - tar oils at addition of sodium carboxylate to them and increasing stability of the received mix.

3 tbl, 10 ex

 

The invention relates to the refining and allows to improve the quality of heavy oil fractions.

Known boiler fuel (RF patent No. 2139317) containing a mixture of oil and lighter fractions of the crude oil refining, as additives for reducing the viscosity, the mixture is subjected to hydrodynamic cavitation treatment.

The disadvantages of this structure is the high viscosity of the obtained product, low stability and the need for cavitation processing.

Known fuel for the boiler (patent of Russia №2459862) on the basis of heavy petroleum fractions, sludge and by-product processing shale oil - polymers of molecular weight 5000-7000, containing not more than 0.05% sulfur and soluble in tar, in the following ratio of components, wt. -%:

oil-slime30-70
polymers3-10
the heavy oil fractionrest

In this invention, additives which reduce the viscosity of heavy oil fractions, are slime and polymers of molecular weight 5000-7000.

The resulting fuel has a high viscosity, making it difficult to pump through pipelines, and iscoe stability.

The closest in technical essence is a boiler fuel (RF patent No. 2500792, C10L 1/08, 2013), containing the heavy oil fraction and a stabilizer - waste vegetable oil - carboxylate sodium in the following ratio of components, wt. -%:

the carboxylate sodium20-30
the heavy oil fractionrest

Disadvantages derived fuel are high viscosity, making it difficult to pump through pipelines, and low stability.

Such heavy fractions of oil, as the tars are the residue after distillation of oil fuel and oil fractions and are mainly used for obtaining bitumen. Heavy tars in the standard modes of oxidation of quality road bitumen cannot be obtained. In the oxidation of sulfurized tars obtained hard maloplastichnye bitumen.

The objective of the invention is to develop additives to reduce the viscosity of heavy oil fractions - tars, the amount added of the additive and achieve a high stability of the mixture.

The technical result is to reduce the viscosity of heavy oil fractions - tars adding to them the proposed Pris the DKI and improved stability of the mixture.

The technical result is achieved by the fact that additive to reduce the viscosity of heavy oil fractions - tars is a carboxylate sodium - waste production of vegetable oils, added to the heavy oil fractions - tars in the amount of 20-50% of the mass.

The carboxylate sodium is a sodium salt of fatty acids, obtained in the processing of alkaline wastes, which are formed during the processing of vegetable oils with caustic soda. This pasty substance is light brown or brown in color, containing not less than 25% fat, 9-28% Soaps and 0.2-0.4% free alkali.

Tar - thick resinous residue after distillation from oil fuel and oil fractions. In the case of shallow selection of oil fractions, the residue is called tar oil.

Adding carboxylate sodium to heavy oil fractions creates a stable emulsion with low viscosity and high stability. This allows to obtain high-quality bitumen, and dispose of waste vegetable oils.

Thus, the essential features set forth in the claims, provide the desired technical result, namely the viscosity reduction of heavy oil fractions - tars and increase the stability of the obtained mixture, which allows long-term storage in reservoirs and easy pumping through the pipeline is m

Superior heavy fraction oil - tars obtained by mixing carboxylate sodium and tar or tar oil. Components preheat: carboxylate sodium to 35-40°C and heavy fractions of oil - up to 60-70°C, the stirring is carried out at a temperature of 60-70°C until a stable emulsion for 30-40 minutes.

A mixture of carboxylate sodium and heavy fractions of oil - tar can be used for obtaining bitumen, as well as to improve the properties of the tar oil used as softener of rubber compounds or construction.

The quality of the resulting mixtures is illustrated in the examples below. As components used: heavy sulfurized tar from Arlan oil density 0,986 g/cm3containing 3.1 percent sulfur, with a pour point of 49°C and a flash point in an open crucible 302°C, tar Western-Siberian oil density 0,980 g/cm3containing 1.9 percent sulfur, with a pour point of 34°C and a flash point in an open crucible 340°C, and tar oil having a viscosity WU100=30-45 and a flash point in an open crucible 260°C, carboxylate sodium production of JSC "Krasnodarskogo".

From a mixture of tar and carboxylate sodium get high-quality road and roofing bitumen and the mixture of carboxylate sodium and tar oil is a good rubber softener cm is present and additive to road surfaces.

The mixture received at the pilot plant of the OJSC "Rosneft", equipped with high-speed stirrer (up to 3000 rpm), tanks and pumps. The mixtures were determined viscosity at 100°C in the viscometer brand VZ vom 868, sulfur content, the softening temperature and stability. From a mixture of tar and carboxylate sodium received bitumen on the installation of JSC "Rosneft" by air oxidation at a temperature of 260-270°C, 0.5 MPa and the air flow of 250 m3/t of raw materials. The bitumen was determined by the penetration depth of the needle according to GOST 11501, softening temperature (ring and ball) according to GOST 11506, viscosity according to GOST 11503, the flash temperature according to GOST 4333 and test coupling with marble or sand GOST 11508.

Example 1

20% of the mass. the carboxylate sodium is heated to 40°C and mixed with 80% of the mass. tar West Siberian oil, preheated to 70°C, in a tank equipped with a high-speed stirrer, and stirred at this temperature for 40 minutes. The resulting mixture is analyzed and sent to bitumen installation. The results of the analyses are presented in tables 1 and 2.

Example # 2

The mixture and bitumen is done according to example No. 1 with the difference that they take 40% of the mass. the carboxylate sodium and 60% of the mass. tar West Siberian oil. The resulting mixture is analyzed and sent to bitumen installation. The results of the analyses is redstavleny in tables 1 and 2.

Example # 3

The mixture and bitumen is done according to example No. 1 with the difference that they take 50% of the mass. the carboxylate sodium and 50 wt%. tar Arlan oil. The resulting mixture is analyzed and sent to bitumen installation. The results of the analyses are presented in tables 1 and 2.

Example No. 4

A mixture of 40% of the mass. the carboxylate sodium and 60% of the mass. tar oil get tar with low viscosity (see table 1) used as softener of rubber compounds and additives for road surfaces.

Sample No. 5 (comparative)

The mixture and bitumen is done according to example No. 1 with the difference that taking 60% of the mass. the carboxylate sodium and 40% of the mass. tar West Siberian oil. The resulting mixture is analyzed and sent to bitumen installation. The results of the analyses are presented in tables 1 and 2.

The presented results show a low viscosity and high stability of the resulting mixtures. These qualities make it easy to pump the mixture through pipelines and accelerate the process of loss of mechanical impurities. A mixture of carboxylate sodium with tar suitable for bitumen road liquid and roof, which are above the requirements of GOST. Oil road bitumen grades SG is obtained by liquefaction of viscous bitumen light petroleum products. The proposed invention eliminates this process, and ek is nomic petroleum products, intended for dilution. In addition, it should be noted that the use of this invention allows the use of waste vegetable oils that will solve the issue of disposing of it.

However, increasing the number of added carboxylate sodium stated above (No. 5) results in low-quality bitumen, and the reduction does not improve the properties of tar.

Furthermore, it should be noted that in the tar concentrate metals oil and the addition of carboxylate sodium can reduce their content in the produced bitumen.

Additive to reduce the viscosity of heavy oil fractions - tars, which represents a carboxylate sodium - waste production of vegetable oils, added to the heavy oil fractions - tars in the amount of 20-50 wt.%.



 

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SUBSTANCE: invention relates to a lead-free fuel composition which contains: (a) as its basic part a mixture of hydrocarbons in the petrol boiling range and (b) a small amount of a mixture of additives comprising (i) one or more compounds of p-alkoxy-N-alkylaromatic amine of general formula

I,

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8 cl, 2 dwg, 3 tbl, 5 ex

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FIELD: chemistry.

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1 tbl, 3 ex

FIELD: chemistry.

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2 cl, 4 ex

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4 cl, 3 dwg

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2 cl, 1 dwg, 1 ex

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9 tbl, 3 ex

FIELD: chemistry.

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15 cl, 2 tbl, 2 ex

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8 cl, 2 tbl

FIELD: chemistry.

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16 cl, 10 dwg, 7 ex, 6 tbl

FIELD: chemistry.

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4 cl, 1 tbl

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2 cl, 1 dwg, 4 tbl

FIELD: power engineering.

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3 cl

FIELD: engines and pumps.

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11 cl

FIELD: chemistry.

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EFFECT: claimed invention makes it possible to increase output of solid, liquid and gaseous fuel burning.

10 cl, 1 tbl, 4 ex

Rocket propellant // 2513850

FIELD: chemistry.

SUBSTANCE: invention relates to rocket propellants for liquid, solid fuel and hybrid rocket engines. Rocket propellant contains fuel, which represent borazine, and oxidant. In presence of bound nitrogen in oxidant fuel additionally contains boron or its compounds, for instance, diborane, tetraborane, decaborane, beryllium borohydride, metal borides. As one of versions, rocket propellant contains as fuel 62.65±15.0% of borazine and oxidant oxygen 37.35±15.0%. As another version rocket propellant contains 34.56±13.0% of borazine, 51.52±13.0% of oxygen and 13.02±13.0% of boron. In all cases the sum of component ratios must constitute 100%.

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4 cl

FIELD: chemistry.

SUBSTANCE: claimed invention relates to liquid fuel composition, which contains petrol, suitable for application in internal combustion engine with spark ignition; and one or more salt derivatives of amides of poly(hydroxycarboxylic acids) of formula (III): [Y-CO[O-A-CO]n-Zr-R+]mpXq-, where Y stands for hydrogen or optionally substituted hydrocarbyl group, A stands for bivalent optionally substituted hydrocarbyl group, n equals from 1 to 100, m equals from 1 to 4, q equals from 1 to 4 and p is an integer number on condition that pq=m; Z stands for optionally substituted bivalent bridging group, which is bound with carbonyl group via nitrogen atom, r equals 0 or 1, R+ stands for ammonium group and Xq- stands for anion. Invention also relates to method of exploitation of internal combustion engine with spark ignition, which includes introduction of claimed liquid fuel composition into combustion chamber of engine. Invention also describes application of claimed liquid fuel composition for improvement of lubricating ability, for improvement of engine purity, for improvement of fuel consumption economy and for improvement of technical characteristics of lubricating material in internal combustion engine with spark ignition, which operates on claimed liquid fuel composition, in comparison with engine, operating on petrol.

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14 cl, 7 tbl, 50 ex

FIELD: chemistry.

SUBSTANCE: motor petrol additive contains a multifunctional additive with detergent and anticorrosion properties - 1.0-10.0 wt %, a piperazine ethanamine colour stabiliser - 0.005-0.3 wt %, a hydrocarbon fraction with boiling point between 30°C and 330°C 20-50 wt % and an antiknock additive containing N-methyl aniline as a basic component - up to 100 wt %. Also disclosed is a fuel composition for an internal combustion engine based petrol, which contains said multifunctional fuel additive in amount of 0.3-4.0 wt %.

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2 cl, 3 tbl

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to addition of depressor additive to waxy oil with dissolving said additive in hydrocarbon solvent and mixing obtained solution with oil. Ultrathene is used as said additive while diesel fuel is used as hydrocarbon solvent. Dissolution of said additive is performed at diesel fuel heating to 65-75°C. Mixing of obtained solution with oil is effected at heating to 50-55°C. Note here that said additive is added to oil in amount of 25-35 g of ultrathene per 1 ton of oil.

EFFECT: flow characteristics of processed oil, higher process efficiency.

3 cl, 1 ex

FIELD: chemistry.

SUBSTANCE: described is a method of producing an anti-turbulent additive with monomer recycling, a method of producing an anti-turbulent additive, a method of producing higher poly-α-olefins for said methods and an anti-turbulent additive based thereon. The methods employ a substance with a boiling point higher than that of the starting monomer by not less than 73°C as a precipitation agent for the obtained polymer.

EFFECT: reduced monomer loss, low cost of the methods by preventing formation of azeotropic mixtures of the precipitation agent and the monomers while maintaining high degree of purity of the recycled monomers.

16 cl, 1 dwg, 2 tbl, 20 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a liquid fuel additive, which involves adding natural aluminosilicate to a residual oil product, adding water and mixing. The natural aluminosilicate used is mica, preferably ground vermiculite which is fired, followed by successive repeated holding in highly concentrated carboxylic acid solutions, preferably formic and acetic acid, a highly concentrated inorganic acid; after holding the mica in acids, the mica is filtered from the used acids; the residue of treated mica obtained after the last holding in acid is neutralised; the obtained mica is further mixed with finely ground olivinite, algae and a calcium-containing natural component, taken in the following amounts: olivinite 5-20 wt %, algae 10-20 wt %, calcium-containing component 5-15 wt % of the initial amount of vermiculite; the obtained composition of components is flooded with water, which is then evaporated to obtain a wet composite mixture; the latter is mixed with a residual oil product in form of kerosene in ratio of 1:5, held and then dispersed. The invention also relates to composition of an additive which contains natural aluminosilicate and a residual oil product.

EFFECT: reduced emission of toxic substances in exhaust gases, improved fuel combustion processes, reduced soot and smoke formation, fuel saving.

12 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: alumoplatinum catalyst with the platinum content of 0.6 wt % is used as a hydration catalyst. The hydration process is carried out under pressure to 4 MPa, temperature of 250-300°C, volume rate of the raw material supply of 0.5-1.0 h-1 and a ratio of hydrogen-containing gas/raw material to 1500 nm3/m3.

EFFECT: extension of the raw material resources for the production of scarce jet fuel for supersonic aircraft, simplification of the technological scheme of the process and an increased output of the target jet fuel.

3 cl, 2 ex

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