SU1050281A1 - Fuel composition - Google Patents

Abstract

FUEL COMPOSITION based on hydrocarbon fuel with the addition of N, s-di

Description

This invention relates to fuel compositions based on hydrocarbon fuels with the addition of additives that improve their antioxidant stability.

Hydrocarbon-based fuel compositions with the addition of, for example, 2,6-di-tert.butyl-4-methylphenol-ionol as an anti-acid additive, are known. OOH However, ionol is not effective enough, is not able to slow down the developed oxidation processes, loses efficiency at high temperatures. , in the presence of fuel mercaptans causes increased corrosion.

The closest in essence and the achieved result is a fuel composition based on reactive hydrocarbon fuel with the addition of N, H-di- (3,5-di-tert.butyl-4-oxybenzyl) urea (additive KF-1) C 2

However, the additive KF-1, although it increases the stability of the fuel and, by its effectiveness, exceeds the ionol, it still gives insufficient antioxidants that merge with howl with solid matter.

The purpose of the invention is to increase the antioxidant properties of the composition.

The goal is achieved by a fuel combination based on a hydrocarbon fuel with the addition of H, i-di- (3 5-di-tert. Buts1-4-hydroxybenzyl) urea and additionally containing di (3,5-di-tert-butyl-4 -oxiphenyl) methane in the following ratio, wt.%:

N, N-di- (3,5-ditert. Butyl-4-hydroxybenzyl) -urea

(22.5-27.0).

Di- (3,5-di-tert.butyl-4-oxyphe (3-7.5) H Onyl) -methane

Hydrocarbon Up to 100

fuel

The composition is prepared by displacing the calculated amount of additives with the hydrocarbon fuel at room temperature.

Example. A weighed amount of KF-1 additive 0.0024 g and di- (3,5-di-tert-butyl-4-hydroxyphenyl) methane 0.0072 g is dissolved in 400 ml of pre-filtered T-6 fuel, thus obtaining a fuel composition with a total concentration of additives 30-10 wt.%, including 22.5-10 wt. KF-1 and 7.5-10 wt.% di- (3,5-di-tert. butsh1-4-hydroxyphenyl) - methane (MB-1).

Evaluation of the antioxidant properties of the fuel composition is carried out by the method of twelve heating, consisting in heating the fuel composition at .12 times for 6 hours and determining by the end of the test its acidity, optical density and peroxide value.

Test results are presented

in the table.

1-4

30-10

30-10

27-10G

9: 1 3-10 25-10

5: 1

5ia

,-four

2.5-10-

3: 1

7,

10-10 20-10

2: 1

15-10 15-10

1: 1.

22.5-10

.5--10-

1: 3

on fire

Without additive T-6

on fire

+ 30-10 ionol T-6

12.56

0.49

8.8 6.8 0.72 9.2 4.2 0.57

6.1 3.3 0.41 4.4 4.1 0.49 5.6 6.3 0.6 0.6 8.2 6.3 0.70 8.7 6.7 0.73 8.4

22.80

1.15

3.1 16.30 0.59 7.5

310502814

From the experimental data, the density, peroxide number) of the knowledge data shows that, when combined, it is much better than when using KF-1 and di- (3,5-di-tert-T-6 fuel with KF-1 or dibutyl-A additive - oxyphenyl) methane with a ratio of - (3,5-di-tert.butyl-4-hydroxyphenyl) -mixing of 9: 1 components, 5 tane is observed separately. The proposed synergistic effect: readings of the fuel-position of the additives of a significantly effective composition (acidity, optical additives of ionol.

Claims (1)

FUEL COMPOSITION based on hydrocarbon fuel with the addition of N ^ -diSZ, 5-di-tert.butyl-4-hydroxybenzyl) urea, distinguishing me clearly in that, in order to increase the antioxidant properties of the composition, it additionally contains di- (3, 5-di-tert-butyl-4-hydroxyphenyl) methane in the following ratio of components, wt.%: And, N-di- (3,5-di-tert.butyl-4-hydroxybenzyl) urea (22.5-27) * 10 • Di- (3,5-di-tert.butyl-4-hydroxyphenyl) methane (3-7.5) 1 (G ⁴ Hydrocarbon fuel ;. Up to 100>