Method for producing a reagent to decrease hydrodynamic resistance of turbulent flow of liquid hydrocarbons in pipelines

A technology of fluid mechanics and liquid hydrocarbons, applied in pipeline systems, liquid carbon-containing fuels, gas/liquid distribution and storage, etc., can solve problems such as low monomer conversion rate, low polymer concentration, and wide molecular weight distribution

Inactive Publication Date: 2019-08-02
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTJU MIRRIKO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The significant disadvantages of this method are: it needs to be processed with a large amount of catalyst at a high polymerization rate; the detachable reactor used has a complicated structure, requires careful preparation, and it is difficult to collect and add monomer; compared with the method of the present invention, The conversion rate of monomer is low
[0008] This method has the disadvantages of producing a solution with a low polymer concentration, energy-intensive separation of the polymer from the solution, and large amounts of waste
[0014] This method has the following disadvantages: a large amount of catalyst and cocatalyst are used, the molecular weight distribution is wide, the monomer conversion rate is general, and there are low 1-5×10 6 A polymer fraction with a molecular weight in atomic mass units that results in the presence of a large amount of reduced adhering powder and an added amount of highly polar non-solvents (water and methanol) as dispersion medium, preferably using cryogenic grinding

Method used

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  • Method for producing a reagent to decrease hydrodynamic resistance of turbulent flow of liquid hydrocarbons in pipelines
  • Method for producing a reagent to decrease hydrodynamic resistance of turbulent flow of liquid hydrocarbons in pipelines
  • Method for producing a reagent to decrease hydrodynamic resistance of turbulent flow of liquid hydrocarbons in pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 (similar to RU 2599245)

[0043] Jacketed reactor with mixer, thermocouple, pressure gauge, nitrogen delivery 99.9% w / w filled with 90% w / w amount of hexane-1, 5% w / w amount of tetradecane The ene-1, 4.91% w / w amount of dodecane with a purity of not less than 99.8% w / w. The mixture in the reactor was cooled to +10±2°C by mixing with a mixer and feeding the coolant into the jacket of the reactor. The catalyst activator was then delivered in the form of a mixture of diethylaluminum chloride and triisobutylaluminum in an amount of 0.077% w / w (0.0338% w / w each) in a weight ratio of 1:1 and the catalyst was delivered to Titanium trichloride in an amount of 0.013% w / w was fed into the reactor, ie as a suspension with a concentration of 40% w / w in heptane. The contents of the reactor were mixed, maintaining the temperature in the range of +8°C to +12°C for 1 hour. Then, the reaction mass was discharged in a nitrogen stream into an airtight container or a polymer c...

Embodiment 2

[0045] Jacketed reactor with mixer, thermocouple, pressure gauge, nitrogen delivery 99.9% w / w filled with 75% w / w amount of hexane-1, 10% w / w amount of decene- 1. Decalin with a purity of not less than 99.8% w / w in an amount of 11.91% w / w, and cyclooctadecane with a purity of not less than 99.8% w / w in an amount of 3.00% w / w. The mixture in the reactor was cooled to +10±2°C in a stream of nitrogen by mixing with a mixer and feeding the coolant into the jacket of the reactor. The catalyst activator was then delivered in the form of a mixture of diethylaluminum chloride and triisobutylaluminum in an amount of 0.077% w / w (0.0338% w / w each) in a weight ratio of 1:1 and the catalyst was delivered to the Titanium trichloride was fed in an amount of 0.013% w / w in the reactor, ie in the form of a suspension with a concentration of 40% w / w in heptane. The contents of the reactor were mixed, maintaining the temperature in the range of +8°C to +12°C for 1 hour. Then, the reaction mass ...

Embodiment 3

[0047]Jacketed reactor with mixer, thermocouple, pressure gauge, nitrogen delivery 99.9% w / w filled with 84% w / w amount of hexane-1, 5% w / w amount of tetradecane ene-1, dodecane with a purity of not less than 99.8% w / w in an amount of 5.91% w / w, cyclooctane with a purity of not less than 99.8% w / w in an amount of 5.00% w / w. The mixture in the reactor was cooled to +10±2°C by mixing with a mixer and feeding the coolant into the jacket of the reactor. The catalyst activator was then delivered in the form of a mixture of diethylaluminum chloride and triisobutylaluminum in an amount of 0.077% w / w (0.0338% w / w each) in a weight ratio of 1:1 and the catalyst was delivered to the Titanium trichloride was fed in an amount of 0.013% w / w in the reactor, ie in the form of a suspension with a concentration of 40% w / w in heptane. The contents of the reactor were mixed, maintaining the temperature in the range of +8°C to +12°C for 1 hour. Then, the reaction mass was discharged in a nitrog...

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Abstract

The invention relates to inorganic and polymer chemistry, and more specifically to the transport of oil and petroleum products via pipelines. A method for producing a reagent to decrease hydrodynamicflow resistance of liquid hydrocarbons in pipelines comprises polymerization of alpha-olefins C6-C14 in the presence of a catalyst and a catalyst activator. Furthermore, the polymerization of alpha-olefins C6-C14 is performed in a monomer medium with the addition of 0.1 to 5 mass percent of saturated alicyclic hydrocarbon composition C8-C32 and a saturated aliphatic hydrocarbon composition C6-C18with monomer conversion of 96.0 to 99.5 mass percent, wherein microspherical titanium trichloride is used as the catalyst, and a mixture of diethylaluminum chloride and triisobutylaluminum in a mass ratio of 1:10 to 10:1 is used as the catalyst activator. A polymer is then produced with a molecular mass of more than 107 amu with a narrow molecular mass distribution of no more than 1.5 with the specified component ratio. The polymer is then ground, thereby obtaining the commodity form of the reagent for decreasing hydrodynamic flow resistance of liquid hydrocarbons in pipelines. The technical result of the invention consists in producing a reagent that provides a decrease in the hydrodynamic resistance of the flow of liquid hydrocarbons in pipelines and, as a result, increases the throughput capacity of a pipeline and decreases the cost of transport.

Description

technical field [0001] The present invention relates to inorganic and polymeric chemicals, ie to the pipeline transportation of petroleum and petroleum products. Background technique [0002] According to the well-known prior art, polymer materials, when added to the turbulent flow of pipeline crude oil or liquid hydrocarbons (such as petroleum or diesel), form a temporary high-viscosity near-wall layer on the inner surface of the pipeline, which can reduce the turbulence in the area of ​​the pipeline, thereby increasing the capacity of the pipeline and reducing the energy cost of transportation. Due to very small amount (10-50mln -1 ), which are the most efficient and most commonly used in the industry, can exhibit these properties in liquid hydrocarbons. The polymer is delivered to the transfer line in the form of a high concentration (20-50% w / w) suspension with a dispersed particle size in the range of 50-500 μm in a solvent (as the dispersion medium) that does not dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/02C08F10/14C08F4/64F17D1/17
CPCC08F2/02C08F2/22C08F110/14C10L1/1641C10L10/08C10L2250/06C10L2270/10C08F4/642C08F4/64C08F10/14C08J3/12C08J2323/20
Inventor 鲁斯兰·弗拉基米罗维奇·帕利伊戈·亚历山德罗维奇·马立钦
Owner OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTJU MIRRIKO
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