SU1227902A1 - Additive for lowering hydrodynamic friction of hydrocarbon liquids - Google Patents

Abstract

Use of polyhydroxodinaphthenate aluminum as an additive to reduce the hydrodynamic training of hydrocarbon fluids.

Description

The invention relates to additives effectively reducing the hydrodynamic friction of hydrocarbon liquids, including oil and oil products when pumping them through pipelines.

The aim of the invention is to increase the effectiveness and durability of the additive, which reduces the hydrodynamic friction in the pipeline when pumping hydrocarbon liquids.

This is achieved by using polyhydroxydinaphthenate aluminum having the formula

...

AND

where R is the naphthenic acid residue, and n varies depending on the concentration of the drawdown in the solution from 20 to 300.

Agoomini polyhydroxodinaphthenate (PGDNA) was used as a mineral oil thickener to obtain lubricating greases.

In the known methods of using HCnonb30BaJTOCb, the property of polyhydroxydinaphthenate aluminum to form in a solution at concentrations higher than 2-3% of the structural network with the formation of a gel.

The invention uses the flexibility of the macromolecular chain PGDN, namely, its property to stretch under the action of the turbulent flow vortices that occur and thus dissipate the energy of the flow, reducing the resistance to the flow of the liquid; in addition, the property of coordination bond in the PGDN molecule is used — to be restored after the removal of stress-destroying coordination bonds, and therefore, increase

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Example. B 1.0 l of toluene is dissolved with 0.005 g of polyhydroxydinaphthenate aluminum (PHA), mixed thoroughly, on a magnetic stirrer for 24 hours. The resulting solution is tested on a turbo meter by repeated (up to 25 times) pumping through the installation.

Example 2. As in Example 1, 0.01 g of PHA was dissolved in 1.0 toluene. The solution is tested on the installation.

Example 3. As in Example 1, 0.05 g of PHA was dissolved in 1.0 l of toluene.

Example 4. As in Example 1, 0.1 g of PHNA was dissolved in 1.0 l of toluene. The resulting solution is tested for a hydrodynamic effect.

Example 5. As in Example 1, in, 0 l of Samotlor oil, 0.05 g of the additive is dissolved. The resulting solution is tested for hydrodynamic efficiency.

Example 6. As in Example 1, 0.05 g of the additive is dissolved in i, 0 l of gasoline A-76. The resulting solution was tested for hydrodynamic efficiency,

Example 7. As in Example 1, 0.05 g of the additive was dissolved in 1.0 L of diesel fuel. The resulting solution

The effective time is tested for hydrodynamic efficiency.

Example 8. As in Example 1, 0.05 g of the additive is dissolved in 1.0 liter of TC-1 jet fuel. The resulting 55 solution is tested for hydrodynamic efficiency.

analysis Example 9. As in example 1, in 1.0 l of toluene is dissolved 0.05 g

cages.

The additive is a light brown, sticky substance, poorly soluble in water and highly soluble in hydrocarbons from 215 to 235 C. The indicated structure is confirmed by the results of elemental and IR spectroscopy.

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Elemental analysis:

Found,%: C 69.2; H 9.6; About 14.1.

It is calculated,%: C 69.0; H 9.5; About 14.0.

The IR spectra contain absorption bands corresponding to the stretching vibrations of the hydroxyl and ionized carboxyl groups, as well as the absorption bands corresponding to the change in the valence angle in the structural fragment M-0

M (band at 983 cm).

IR spectroscopy, cm

- (

VoH590 1600; Vg 1450 - 1A70; V 983-990.

Hydrodynamic properties of the additive were tested on a turbo meter in the 5 interval of Reynolds numbers from 510 to 2 10. The working unit is a tube 0.8 m long and with a diameter of 0.0014 m.

Example. B 1.0 l of toluene is dissolved with 0.005 g of polyhydroxydinaphthenate aluminum (PHA), mixed thoroughly, on a magnetic stirrer for 24 hours. The resulting solution is tested on a turbo meter by repeated (up to 25 times) pumping through the installation.

Example 2. As in Example 1, 0.01 g of PHA was dissolved in 1.0 toluene. The solution is tested on the installation.

Example 3. As in Example 1, 0.05 g of PHA was dissolved in 1.0 l of toluene.

Example 4. As in Example 1, 0.1 g of PHNA was dissolved in 1.0 l of toluene. The resulting solution is tested for a hydrodynamic effect.

Example 5. As in Example 1, in, 0 l of Samotlor oil, 0.05 g of the additive is dissolved. The resulting solution is tested for hydrodynamic efficiency.

Example 6. As in Example 1, 0.05 g of the additive is dissolved in i, 0 l of gasoline A-76. The resulting solution was tested for hydrodynamic efficiency,

Example 7. As in Example 1, 0.05 g of the additive was dissolved in 1.0 L of diesel fuel. The resulting solution

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1polyisobutylene prototype). The resulting solution is tested for hydrodynamic efficiency.

The results for the examples are given in the table.

As can be seen from the table, the effectiveness of the proposed additive is 10%, and the resistance to degradation is many times better. This is due to

Editor N.Gorvat

Compiled by I. Peto n Techred M. Morgental

Order 2279/39

Circulation A59 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

. Production and printing predgfine, Uzhgorrd, Project St., 4

27902.4.

that during flow in a turbulent flow, strong shear stresses acting on the additive break

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polymer molecule. In the case of polyisbutylene, the break in the chemical bond is irreversible, and in the case of the proposed polyhydroxy aluminum naphthenate aluminum, the coordination bond is reversibly restored.

Proofreader A. Hoop ar

Claims (1)

The use of polyhydroxydinaphthenate aluminum as an additive to reduce the hydrodynamic friction of hydrocarbon fluids. 311 .... 1227902 1227902