METHOD OF PRODUCTION OF A FRICTION REDUCER

Abstract

This invention is used in the field of inorganic and polymer chemistry, specifically in the field of pipeline transportation of petroleum and petroleum products. It is a method for preparing a reagent to reduce the hydrodynamic friction of turbulent flow of liquid hydrocarbons in pipelines, characterized by a high polymer content of at least 75% by weight. The method involves mixing a polymer of 0.1–1.5 mm, which reduces the hydrodynamic friction of turbulent flow of liquid hydrocarbons, with solvents that do not dissolve the polymer. The prepared product is a commercially available form of the reagent with a high polymer content of at least 75% by weight, used to reduce the hydrodynamic friction of liquid hydrocarbon flow in pipelines.The product prepared according to the described method is injected into the hydrocarbon fluid flow being transported through the pipeline using an injection apparatus that mechanically moves the product using a conveyor or screw feeder. The technical result of the invention is to prepare a product, containing a large amount of active substance, that is stable and can be injected into pipelines for transporting high-pressure oil or gas condensate. This reduces friction in the flow of pumped oil or gas condensate, as well as the cost of the product and the cost of transporting the oil and gas condensate.

Description

METHOD FOR PREPARING FRICTION REDUCING AGENTS CONTAINING A LARGE AMOUNT OF AN ACTIVE BASE AND METHOD FOR INJECTING THEM INTO THE FLOW OF A HYDROCARBON FLUID TRANSPORTED THROUGH A PIPELINE FIELD OF INVENTION This invention is used in the petroleum and petrochemical industries for the pipeline transport of liquid hydrocarbons, namely, to reduce hydrodynamic drag during transport. The proposed invention relates to friction-reducing agents (FRAs), which reduce the hydrodynamic friction of turbulent flow of hydrocarbon fluids in pipelines; specifically, fast-dissolving, water-soluble dry dispersions (DDDRAs) of high and ultra-high molecular weight (UHMW) (co)polymers, which reduce hydrodynamic drag in pipelines and contain complex anti-caking agents and other additives. BACKGROUND OF THE INVENTION There is a method for producing a fine-grained polymer that is soluble in carbonaceous liquids. The polymer is synthesized by (co)polymerization of higher α-olefins under the action of a Ziegler-Natta catalyst. The (co)polymer of higher α-olefins used is a casting-type polymerization product. A fine dispersion of the polymer is obtained by thermal reprecipitation of the polymer in a liquid that is not a solvent for the polymer at room temperature but is capable of dissolving it at a higher temperature (see RU 2481357 C1 dtd. 10.05.2013). The disadvantages of this method for producing a polymer are the low productive capacity of the product form, the significant energy costs, the loss of spatial structure when a polymer is dissolved at high temperatures, and the need for a higher dosage of the agent prepared in this way to preserve optimal efficiency. There is a method for producing a non-aqueous suspension that reduces hydrocarbon friction in pipelines (see EA 001538 dtd. 15.10).1996), whose method consists of forming a non-aqueous, thermosetting suspension of a solid hydrocarbon-soluble polyolefin friction-reducing agent formed from olefins capable of reducing friction in hydrocarbons flowing through pipelines, comprising: (a) finely partitioning (at low temperature) said solid polyolefin in the presence of a partitioning agent to provide a free-flowing polyalphaolefin material coated with said partitioning agent, (b) dispersing the coated polyalphaolefin particles in a substantially non-aqueous suspension medium selected from the group consisting of alcohols (<14 carbon atoms), glycols (<14 carbon atoms), and dipropylene glycol methyl ether, tripropylene glycol methyl ether, tetrapropylene glycol methyl ether, or glycol ethyl ethers, wherein the partitioning agent is a fatty acid wax. Mixtures of simple glycol ethers may be used as suspension agents. The most similar method in nature and technical outcome is a method for producing a hydrodynamic drag-reducing agent for a hydrocarbon stream (see RU 2599986 dtd. 20.10.2016), which is a stabilized high molecular weight polyalphaolefin powder. The method involves the polymerization of higher alpha-olefins in a fluorinated organic compound medium using a titanium-magnesium catalyst modified with an electron-donating compound, followed by the extraction of the polyalphaolefin powder and its stabilization by the addition of an anti-caking agent. The electron-donating compound is glycol ethers or italic acid esters. The synthesis is carried out using a given ratio of system components. The hydrodynamic drag-reducing agent is characterized by the weight percentage of its components: polyalphaolefin 80–90%, and the anti-caking powder 10–20%. The disadvantage of this method and its analogues is its low energy efficiency, as the polymerization process is interrupted once an average conversion of 40–95% is reached. This is due to the addition of a dispersion medium, including an anti-caking agent, decantation of the polyalphaolefin suspension, washing of the (co)polymer suspension using filter media, and vacuum drying at 40–60 °C to remove unreacted monomer and residual halogenated organic solvents. The prepared material cannot be used to inject liquid hydrocarbons into a pipeline flow without a carrier fluid. The essential difference is the use of a finely dispersed polymer powder with a particle size of 10 to 1500 pm, and its treatment with auxiliary materials from the group of monofunctional heteroatomic organic compounds, preferably higher fatty alcohols, and bifunctional heteroatomic organic compounds, preferably glycol derivatives, with a carbon skeleton value of 3 to 16 units with the following ratio of the components, % by weight: Finely dispersed polyalphaolefin powder - 75 to 90 Release agent (anti-caking agent) - 2 to 15 Monofunctional heteroatomic organic compound with a carbon skeleton value of 3 to 16 units: from 1 to 10, Bifunctional heteroatomic organic compound with a carbon skeleton value of 3 to 16 units: 1 to 10. The product prepared in this way has satisfactory mechanical properties and can be used for the injection of a hydrocarbon fluid transported through a pipeline using an apparatus for injecting powdered polymeric materials. z / frfrLn / zznz / B / YiAi BRIEF DESCRIPTION OF THE INVENTION The object of the invention is to prepare a reagent (friction reducing agent) containing a large amount of an active base to reduce the hydrodynamic friction of the flow of liquid hydrocarbons, a reagent that can be dosed in powder form. The technical result of the invention is to prepare a product, which has 75% by weight of active substance which is an ultra-high molecular weight polyalphaolefin, which is stable and can be injected into the pipeline for the transport of oil or gas condensate at high pressure using any powder injection apparatus, which allows reducing the friction of the flow of pumped oil or gas condensate, as well as reducing the cost of transporting oil and gas condensate. The object and the technical result are achieved by preparing a reagent for reducing the hydrodynamic friction of a turbulent flow of liquid hydrocarbons in pipes, which is a drag-reducing agent with a large amount of an active base, at least 75% by weight of polymer content, by mixing a polymer that has the properties of reducing the hydrodynamic friction of the turbulent flow of liquid hydrocarbons of 10-1500 microns in size, prepared according to any known method, with solvents that do not dissolve it, subject to the following ratio of the components, % by weight: Finely dispersed polyalphaolefin powder - 75 to 90 Release agent (anti-caking agent) - 2 to 15 Monofunctional heteroatomic organic compound with a carbon skeleton value of 3 to 16 units: from 1 to 10, Bifunctional heteroatomic organic compound with a carbon skeleton value of 3 to 16 units: 1 to 10. The polymer is mixed with non-dissolving polymer solvents, preferably using any polymer powder mixing equipment. In the case of the specific modality, the polymer powder is mixed with a mixture of glycol from 2 to 12 carbon atoms and fatty alcohol from 4 to 16 carbon atoms in the ratio of polymer powder / glycol and fatty alcohol mixture: 85 parts by weight / 15 parts by weight. The product prepared according to the described method is preferably injected into the hydrocarbon fluid flow conveyed through the pipeline using the injection apparatus that mechanically moves the product through the conveyor or screw feeder, for example, a screw extruder for polymeric materials, either directly into the flow of a hydrocarbon fluid or into an intermediate container to mix the material with the liquid flow and then flow the prepared mixture into the main flow of the pipeline. BRIEF DESCRIPTION OF THE FIGURE FIG. 1 shows a dosage scheme of modality 8 of the present invention. z / bfri η / ζζηζΒ / γίΛΐ DETAILED DESCRIPTION OF THE INVENTION This section describes the main embodiment of the invention, which, however, does not limit other possible embodiments explicitly described in the application materials and evident to a person skilled in the art. The method for preparing a reagent that reduces the hydrodynamic friction of a turbulent flow of liquid hydrocarbons in pipes is carried out according to the following main procedure. This method includes the use of a primary polymer that reduces the hydrodynamic friction of the flow of liquid hydrocarbons, which is prepared, for example, according to a method described in patent RU 2648079 C1 (published on 22.03.2018, journal No. 9), in which a polymer (UHMPAO) with a molecular weight of 1-107-2-107a.mu is preparedMolecular weight distribution less than 1.5, conversion greater than 90% by weight, allowing for a reduction in energy costs related to grinding, for example, in liquid nitrogen at a temperature not exceeding -65°C nor lower than -120°C, in the process of preparing dry polymer dispersions with a concentration of more than 75% by weight in a mixture with polymer solvents that do not dissolve for friction-reducing agents, protecting the polymer against oxidative degradation during storage, significantly reducing the cost price of hydrodynamic friction-reducing reagents for petroleum and petroleum products prepared according to the proposed method and transported through pipelines. The polymer blocks prepared according to patent RU 2648079 C1 are ground to the required size using suitable cryogenic grinding equipment and then mixed with non-dissolving polymer solvents, preparing a product with a polymer content of at least 75% by weight, which is fed into the hydrocarbon fluid flow pumped through the pipeline using an injection apparatus adapted for polymer powders. C6-C14 alpha-olefins, preferably hex-1-ene, oct-1-ene, dec-1-ene, dodec-1-ene, tetradec-1-ene, and mixtures thereof, even more preferably hex-1-ene, dec-1-ene, dodec-1-ene and mixtures thereof containing at least 70% by weight of basic alpha-olefin, are used as monomers to prepare the polymer building blocks. Mixtures of a monofunctional heteroatomic organic compound (MHOC) and a bifunctional heteroatomic organic compound (BHOC) are used as solvents that do not dissolve the polymer, in which the organic compounds containing oxygen, nitrogen as a heteroatom can be used as the MHOC which are isomers of propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, isomers of tripropylamine, tributylamine, tripentylamine, trihexylamine, triheptylamine, trioctylamine, trinonylamine, tridecylamine, triundecylamine, tridodecylamine, tritridecylamine, tritetradecylamine, tripentadecylamine, trihexadecylamine; Organic compounds containing oxygen, nitrogen, sulfur, phosphorus as a heteroatom can be used as z / frfrLn / zznz / B / YiAi BHOC, which is tripropyl phosphate, tributyl phosphate, tripentyl phosphate, propylene glycol, butylene glycol, butyl CELLOSOLVE™, hexylene glycol, ethyl CELLOSOLVE™, texanol, diethylene glycol, triethylene glycol, isophorone, morpholine, dioxane, dimethyl sulfoxide, dimethylformamide. For the mechanical mixing of polymer powder with solvents that do not dissolve the polymer, any polymer powder mixer can be used, for example, Pallmann Maschinenfabrik GmbH & Co KG (Germany), OOO Sibprommash (Russian Federation, Novosibirsk). To dose a product containing a large amount of polymer, not less than 75% by weight, an injection apparatus can be used that mechanically moves the product through a conveyor or screw feeder manufactured by Kinematica AG (Switzerland), IKA-WERKE GmbH & Co. KG (Germany), Krauss Maffei Berstorff AG (Germany) extruders or similar. The method for preparing a reagent to reduce the hydrodynamic friction of a liquid hydrocarbon flow in pipelines is illustrated by, but not limited to, the modalities given below. Mode 1 (similar to RU2599986) Heat a 250 ml three-necked flask fitted with an argon vacuum line and a mechanical vacuum stirrer for 5-10 minutes. Place into an ice-water cooled flask at 12-14 °C, 40 ml (71.37 g) of perfluoromethylcyclohexane, 80 ml (54.24 g) of hexene-1, 0.5 ml of TIBA (4M), and 0.2 ml of the catalyst prepared according to the following procedure: place 5 g (44 mmol) of magnesium ethylate, 40 ml of absolute toluene, 10 ml of titanium tetrachloride, and 0.95 ml (0.80 g, 5 mmol) of 2,2-diethylpropanediol-1,3 dimethyl ether into a 100 ml flask with a magnetic stirrer in an argon stream. Heat the mixture to 115 °C (external temperature in the bath) for 2 hours with stirring. Then decant the liquid layer and wash the precipitate with 2 x 40 mL of toluene at 40 °C. After washing, place 40 mL of absolute toluene and 8 mL of titanium tetrachloride in the flask and heat the mixture to 115 °C for 1.5 hours with stirring.Next, wash the precipitate with 10 x 40 ml of 70 / 100 petroleum ether at 55 °C and suspend the precipitate in 40 ml of 70 / 100 petroleum ether. Prepare 50 ml of a catalyst suspension with a titanium concentration of 0.06 mol / L. Stir the mixture for 4 hours, then warm it to room temperature (5 min) and add a suspension of 4.5 g of calcium stearate in 41 g of butyl CELLOSOLVE™. Stir the mixture vigorously for 20 minutes, stop stirring, and decant the perfluoromethylcyclohexane precipitate over 10 minutes. Distill the perfluoromethylcyclohexane residue and monomer under vacuum. Then wash the product twice with 20 mL of acetone, filter, and dry. The mass of the prepared polymer powder is 41.68 g (69% conversion). The polymer mass fraction is 89.2%. Mode 2 The polymer is prepared according to the following procedure of RU 2648079 C1. Load hex-1-ene in an amount of 75 wt%, dec-1-ene in an amount of 10 wt%, decalin (ζ / M?ιη / ζζηζ / B / γΐΛΐ) with a purity of not less than 99.8 wt% in an amount of 11.91 wt%, and cyclooctadecane with a purity of not less than 99.8 wt% in an amount of 3.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a supply of nitrogen gas with a purity of 99.9 wt%. Cool the mixture in the reactor in a nitrogen stream to a temperature of ± 10 ± 2 °C by stirring with a stirrer and supplying coolant to the reactor jacket.Next, feed the catalyst activator to the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum chloride in a 1:1 mass ratio, at a concentration of 0.077 wt% (0.0385 wt% each). The catalyst is titanium trichloride at a concentration of 0.013 wt% in the form of a suspension with a concentration of 40 wt% in heptane. Stir the reactor contents, maintaining the temperature between +8 and +12 °C, for 1 hour. Then, discharge the reaction mass into a nitrogen stream into gas-tight, polyethylene-lined containers, ensuring the mass layer height does not exceed 250 mm, or discharge into similar polymer containers, seal tightly, and maintain the containers at a temperature of 15 ± 5 °C for at least 15 days without access to an air atmosphere.The resulting polymer blocks are then fragmented into particles of 50 ± 40 mm, 3 ± 2 mm, and 0.8 ± 0.7 mm using a cascade of blade mills. The final milling is carried out in a medium consisting of liquid nitrogen and 15 wt% calcium stearate. A polymer-insoluble solvent, consisting of a mixture of isopropanol and ethylene glycol in an 8:2 wt ratio, is added to the prepared polymer powder to prepare a reagent for reducing the hydrodynamic resistance of oil and petroleum products in pipelines—a stable fine dispersion with a polymer content of 80 ± 5 wt%. Mode 3 The polymer is prepared according to the following procedure of RU 2648079 C1. Load hex-1-ene in an amount of 84 wt%, tetradecene-1 in an amount of 5 wt%, dodecane with a purity of not less than 99.8 wt% in an amount of 5.91 wt%, and cyclooctane with a purity of not less than 99.8 wt% in an amount of 5.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a nitrogen gas supply with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of more than 10 ± 2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket.Next, feed the catalyst activator to the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum chloride in a 1:1 mass ratio at a concentration of 0.077 wt% (0.0385 wt% each), and the catalyst is titanium trichloride at a concentration of 0.013 wt% in the form of a suspension with a concentration of 40 wt% in heptane. Stir the reactor contents, maintaining the temperature in the range of +8 to +12 °C for 1 hour. Next, discharge the reaction mass into a nitrogen stream into gas-tight polyethylene-lined containers so that the height of the mass layer does not exceed 250 mm, or hermetically seal and keep in similarly sized polymer containers at a temperature of 15 ± 5 °C for at least 15 days without access to an air atmosphere.The resulting polymer blocks are then fragmented into particles of 50±40 mm, 3±2 mm, and 0.8±0.7 mm using a cascade of blade mills. The final milling is carried out in a medium consisting of liquid nitrogen and 15 wt% calcium stearate. A polymer-insoluble solvent, consisting of a mixture of butyl CELLOSOLVE™ and ethylene glycol in a 6:4 wt ratio, is added to the prepared polymer powder, preparing a reagent for reducing the hydrodynamic resistance of oil and petroleum products in pipelines—a stable, fine dispersion with a polymer content of 80±5 wt%. Mode 4 The polymer is prepared according to the following procedure of RU 2648079 C1. Load hex-ene in an amount of 80 wt%, dec-ene in an amount of 5 wt%, decalin with a purity of not less than 99.8 wt% in an amount of 14.81 wt%, and cyclooctadecylcyclooctadecane with a purity of not less than 99.8 wt% in an amount of 0.1 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and nitrogen gas supply with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of ±10 ± 2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket.Next, feed the catalyst activator to the reactor as a mixture of diethylaluminum chloride and triisobutylaluminum chloride in a 10:1 mass ratio at a concentration of 0.077 wt% (0.07 wt% and 0.007 wt%, respectively). The catalyst is titanium trichloride at a concentration of 0.013 wt% in the form of a suspension with a concentration of 40 wt% in heptane. Stir the reactor contents, maintaining the temperature between +8 and +12 °C for 1 hour. Then, discharge the reaction mass into a nitrogen stream into gas-tight, polyethylene-lined vessels such that the mass layer height does not exceed 250 mm, or hermetically seal polymer containers of similar size and maintain them at a temperature of 15 ± 5 °C for at least 15 days without access to an air atmosphere.The resulting polymer blocks are then fragmented into particles of 50±40 mm, 3±2 mm, and 0.8±0.7 mm using a cascade of blade mills. Final milling is performed in a medium consisting of liquid nitrogen and 15 wt% calcium stearate. A polymer-insoluble solvent, consisting of a 5:5 wt mixture of ethyl CELLOSOLVE™ and propylene glycol, is added to the prepared polymer powder, preparing a reagent for reducing the hydrodynamic resistance of oil and petroleum products in pipelines—a stable, fine dispersion with a polymer content of 80±5 wt%. Mode 5 z / frfrLn / zznz / B / YiAi The polymer is prepared according to the following procedure of RU 2648079 C1. Load hex-1-ene in an amount of 80 wt%, dec-1-ene in an amount of 5 wt%, decane with a purity of not less than 99.8 wt% in an amount of 12.91 wt%, and cyclohexadecane with a purity of not less than 99.7 wt% in an amount of 2.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a supply of nitrogen gas with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of ±10±2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket.Next, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum chloride with a mass ratio of 1:10 in an amount of 0.077 wt% (0.007 wt% and 0.07 wt%, respectively), and the catalyst is titanium trichloride in the amount of 0.013 wt% in the form of a suspension with a concentration of 40 wt% in heptane. Stir the reactor contents, maintaining the temperature in the range of +8 to +12 °C, for 1 h. Next, discharge the reaction mass into a nitrogen stream into gas-tight containers lined with polyethylene so that the height of the mass layer does not exceed 250 mm, or discharge into similar polymer containers, seal tightly and keep the containers at a temperature of 15±5 °C for at least 15 days without access to an air atmosphere.The resulting polymer blocks are then fragmented into particles of 50±40 mm, 3±2 mm, and 0.8±0.7 mm using a cascade of blade mills. The final milling is carried out in a medium consisting of liquid nitrogen and 15 wt% calcium stearate. A polymer-insoluble solvent, consisting of a mixture of octanol and ethylene glycol in an 8:2 wt ratio, is added to the prepared polymer powder, preparing a reagent for reducing the hydrodynamic resistance of oil and petroleum product flow in pipelines—a stable fine dispersion with a polymer content of 80±5 wt%. Modality 6 The polymer is prepared according to the following procedure of RU 2648079 C1. Load octene-1 in an amount of 80 wt%, hexene-1 in an amount of 15 wt%, decane with a purity of not less than 99.8 wt% in an amount of 2.91 wt%, and cyclotetradecylcyclohexadecane with a purity of not less than 99.8 wt% in an amount of 2.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a supply of nitrogen gas with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of ±10±2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket.Next, feed the catalyst activator to the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum chloride in a 1:1 mass ratio at a concentration of 0.077 wt% (0.0385 wt% each), and the catalyst is titanium trichloride at a concentration of 0.013 wt% in the form of a suspension with a concentration of 40 wt% in heptane. Stir the reactor contents, maintaining the temperature in the range of +8 to +12 °C, for 1 h. z / frfrLn / zznz / B / YiAi Next, discharge the reaction mass into a nitrogen stream into gas-tight, polyethylene-lined containers, ensuring the mass layer height does not exceed 250 mm, or discharge into similar polymer containers, seal tightly, and maintain at 15 ± 5 °C for at least 15 days without access to an air atmosphere. Then, fragment the resulting polymer blocks into particles of 50 ± 40 mm, 3 ± 2 mm, and 0.8 ± 0.7 mm using a cascade of blade mills. Carry out the final milling in a medium consisting of liquid nitrogen and 15 wt% calcium stearate.Add to the prepared polymer powder, a solvent that does not dissolve the polymer consisting of a mixture of phosphonobutane and ethylene glycol in the ratio of 4:6 by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and petroleum products in pipelines - a stable fine dispersion with a polymer content of 80±5% by weight. Modality 7 The polymer is prepared according to the following procedure of RU 2648079 C1. Charge hex-1-ene in an amount of 70 wt%, dodec-1-ene in an amount of 5 wt%, hexadecane with a purity of not less than 99.8 wt% in an amount of 19.908 wt%, and cyclooctane with a purity of not less than 99.8 wt% in an amount of 5.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a supply of nitrogen gas with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of ±10 ± 2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket. Next, feed the catalyst activator to the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum with a mass ratio of 1:1 in an amount of 0.077% by weight (at 0.0385% by weight each) and the catalyst is titanium chloride in the amount of 0.015% by weight in the form of a suspension with a concentration of 40% by weight in heptane.Stir the reactor contents, maintaining the temperature between +8 and +12 °C, for 1 hour. Then, discharge the reaction mass into a nitrogen stream into gas-tight, polyethylene-lined containers, ensuring the mass layer height does not exceed 250 mm, or discharge into similar polymer containers, seal tightly, and maintain at 15 ± 5 °C for at least 15 days without access to air. Subsequently, fragment the resulting polymer blocks into particles of 50 ± 40 mm, 3 ± 2 mm, and 0.8 ± 0.7 mm using a cascade of blade mills. Carry out the final milling in a medium consisting of liquid nitrogen and 15 wt% calcium stearate.Add to the prepared polymer powder, a solvent that does not dissolve the polymer consisting of a mixture of n-butanol and ethylene glycol in the ratio of 8:2 by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and petroleum products in pipelines - a stable fine dispersion with a polymer content of 80±5% by weight. z / frfrLn / zznz / B / YiAi Modality 8 The polymer is prepared according to the following procedure of RU 2648079 C1. Load dodec-1-ene in an amount of 90 wt%, dec-1-ene in an amount of 5 wt%, decane with a purity of not less than 99.8 wt% in an amount of 2.92 wt%, and cyclohexadecane with a purity of not less than 99.8 wt% in an amount of 2.00 wt% into a jacketed reactor equipped with a stirrer, thermocouple, pressure gauge, and a supply of nitrogen gas with a purity of 99.9 wt%. Cool the mixture in the reactor to a temperature of ±10±2 °C by stirring with a stirrer and applying cold coolant to the reactor jacket. Next, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminum chloride and triisobutylaluminum with a mass ratio of 1:1 in an amount of 0.077% by weight (0.0385% by weight each) and a catalyst, titanium trichloride, in the amount of 0.003% by weight in the form of a suspension with a concentration of 40% by weight in heptane.Stir the reactor contents, maintaining the temperature between +8 and +12 °C, for 1 hour. Then, discharge the reaction mass into a nitrogen stream into gas-tight, polyethylene-lined containers, ensuring the mass layer height does not exceed 250 mm, or discharge into similar polymer containers, seal tightly, and maintain at 15 ± 5 °C for at least 15 days without access to air. Subsequently, fragment the resulting polymer blocks into particles of 50 ± 40 mm, 3 ± 2 mm, and 0.8 ± 0.7 mm using a cascade of blade mills. Carry out the final milling in a medium consisting of liquid nitrogen and 15 wt% calcium stearate.Add to the prepared polymer powder, a non-dissolving solvent consisting of a mixture of 1-hexanol and propylene glycol in a 5:5 weight ratio, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and petroleum products in pipelines: a stable fine dispersion with a polymer content of 80 ± 5% by weight. The method of injecting a friction-reducing agent with a large amount of an active base into the hydrocarbon fluid flow transported through the pipeline is carried out according to the following main procedure. Feed the reagent (DRA) prepared according to the above method into a hopper mixer 101 equipped with an agitator and a loading unit on the screw feeder 102. Then feed the reagent (DRA) from the hopper mixer 101 to the screw feeder 102, ensuring the feed of the reagent to the preparation tank 103, in which the prepared reagent is dissolved. There is a hydrocyclone mixing unit (hydrocyclone mixer 104) for mixing the reagent with a hydrocarbon fluid and a check valve 105 before the preparation tank 103. As it passes through the hydrocyclone mixer 104, the reagent is mixed with the hydrocarbon fluid supplied from the pipe 106 through the valve 107, the inlet flow meter 108, and the pressure reducing valve 109. The reagent is then dissolved in the preparation tank 103 until it is homogeneous.The prepared slurry is supplied from the preparation tank 103 through the supply flow meter 110 to the pipeline using the in-line gear pump 111. To prevent backflow of the hydrocarbon fluid from the pipeline to the preparation tank 103 in case of pump shutdown or station repairs, the supply line is equipped with a back-end valve 112 and a valve 113. The reagent dosage is regulated by rotating the screw feeder 102 and controlled by the mass difference of the liquids passing through the inlet flow meter 108 and the supply flow meter 110. The above dosage scheme is given in Figure 1 (Fig. 1). Evaluate the efficiency of the prepared products in a laboratory turborheometer (see Table). The friction reduction (DR) of the petroleum solvent flow in the capillary by the reagent was calculated according to the formula: 40~^o _ *0 ~tP DR= *6 ; where λ is a liquid drag coefficient; t is a flow time of 330 cm3 of the petroleum solvent through the capillary oyp are indices related to the pure solvent and the reagent solution, respectively. The product passes the test if the DR value is at least 30% at the reagent concentration in the petroleum solvent that makes 2.5 ppm. Z / fcfrl O / ZZOZ E / YIAI Board Mode No. Conversion, wt. % Polymer concentration in reagent, wt. % DR value, %, to the reagent concentration in petroleum solvent that makes 2.5 ppm Pour point of reagent, °C (GOST 20287) Mode 1, analog 69.0 30 42.0 -60 Mode 2 98.5 78 41.0 -85 Mode 3 98.0 75 40.0 -85 Mode 4 97.0 80 44.0 -85 Mode 5 98.5 78 41.0 -85 Mode 6 98.0 81 44.0 -85 Mode 7 99.0 79 43.0 -85 Mode 8 98.5 77 42.0 -85 As can be seen from the above modalities and table, it can be concluded that the claimed method, when compared with analogues, including the closest, makes it possible to prepare a reagent that is the most effective for reducing the hydrodynamic friction of a turbulent flow of liquid hydrocarbons in pipelines and, as a result, ensures the increase and reduction of the transport costs of a hydrocarbon fluid.

Claims

NOVELTY OF THE INVENTION Having described the present invention, the following claims are considered novel and are therefore claimed as property: CLAIMS 1. A method for preparing a reagent for reducing the hydrodynamic friction of a turbulent flow of liquid hydrocarbons in pipelines, characterized by a high polymer content of at least 75% by weight, comprising mixing a polyalphaolefin powder that reduces the hydrodynamic resistance of a turbulent flow of liquid hydrocarbons with solvents that do not dissolve the polymer and a separating agent (anti-caking agent), wherein the non-solvent polymer solvents are a mixture of a monofunctional heteroatomic organic compound with carbon atoms from 3 to 16, and a bifunctional heteroatomic organic compound with carbon atoms from 2 to 16, with the following component ratio,% by weight: Polyalphaolefin powder 75 to 90 Separating agent (anti-caking agent) 2 to 15 Monofunctional heteroatomic organic compound with the number of carbon atoms from 3 to 16 from 1 to 10, Bifunctional heteroatomic organic compound with the number of carbon atoms from 2 to 16 from 1 to 10.

2. The method of claim 1, wherein the powder polymer is mixed with a glycol mixture containing a number of carbon atoms from 2 to 12 and fatty alcohol having a number of carbon atoms from 4 to 16.

3. The method of claim 2, wherein the polymer powder and the glycol and fatty alcohol mixture are taken in a ratio of 85 parts by weight / 15 parts by weight.

4. A powdered reagent that reduces the hydrodynamic friction of a turbulent flow of liquid hydrocarbons in pipelines comprising the following components, % by weight: Polyalphaolefin powder from 75 to 90; Separating agent (anti-caking agent) from 2 to 15; Monofunctional heteroatomic organic compound with the number of carbon atoms from 3 to 16 from 1 to 10; Bifunctional heteroatomic organic compound with the number of carbon atoms from 2 to 16 from 1 to 10.

5. The reagent of claim 4, wherein the monofunctional heteroatomic organic compound is at least one of the isomers of propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, tripropylamine isomers, tributylamine, tripentylamine, trihexylamine, triheptylamine, trioctylamine, trinonylamine, tridecylamine, triundecylamine, tridodecylamine, tritridecylamine, tritetradecylamine, tripentadecylamine, trihexadecylamine.

6. The reagent of claim 4, wherein the bifunctional heteroatomic organic compound is at least one of tripropyl phosphate, tributyl phosphate, tripentyl phosphate, propylene glycol, butylene glycol, butyl CELLOSOLVE™, hexylene glycol, ethyl CELLOSOLVE™, texanol, diethylene glycol, triethylene glycol, isophorone, morpholine, dioxane, dimethyl sulfoxide, dimethylformamide.

7. The reagent of claim 4, wherein the monofunctional heteroatomic organic compound is a fatty alcohol having a number of carbon atoms from 4 to 16.

8. The reagent of claim 4, wherein the bifunctional heteroatomic organic compound is glycol with a number of carbon atoms from 2 to 12.

9. A method for reducing the hydrodynamic friction of turbulent flow of liquid hydrocarbons in pipelines comprising injecting the reagent of claim 4 into the hydrocarbon fluid flow conveyed through the pipeline, wherein the injection of the reagent is carried out by means of a polymer powder injection apparatus.

10. The method of claim 9, wherein the reagent is dissolved in the hydrocarbon fluid in a suspended state before injecting it into the pipeline.

11. A method for injecting the reagent of claim 4 into the flow of a hydrocarbon fluid conveyed through a pipeline, wherein the reagent is fed into the hopper mixer, then the reagent with the hydrocarbon fluid, which is supplied from the pipeline through a valve, flow meter, and a pressure reducing valve, goes from the screw feeder through a hydrocyclone mixer and a back valve to the preparation tank to dissolve the prepared reagent in the suspension state, then the prepared suspension is fed through the flow meter using a gear pump back into the pipeline.