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INVENTION
The patent of the Russian Federation RU2118339
ANTIDYMIC ADDITIVE FOR ENGINE FUELS
The name of the inventor: Syrkin Vitaly Grigorievich; Lebedev Svyatoslav Romanovich; Skachkov Alexander Nikolaevich
The name of the patent owner: Syrkin Vitaliy Grigorievich; Lebedev Svyatoslav Romanovich; Skachkov Alexander Nikolaevich
Address for correspondence:
Date of commencement of the patent: 1997.09.25
The invention relates to the field of fuel additives, which reduce smoke formation during its combustion. The additive contains in weight%: cyclopentadienyltricarbonyl manganese 20.0-30.0, dehydrated vegetable oil 25.0-35.0; P-hydroxydiphenylamine 0.02; Monomethylaniline - the rest. With this additive, the smoke suppression effect increases to 40%, and the fuel stability increases to 720 hours.
DESCRIPTION OF THE INVENTION
The invention relates to the field of fuel additives that reduce smoke generation during its combustion, in particular additives containing an organo-organic compound.
A composition is known that suppresses the formation of smoke when using liquid fuels, in particular hydrocarbons, containing 0.1-0.6% by weight of barium and zinc 2-ethylhexanoates at a weight ratio of barium and zinc of 10: 1. The effectiveness of additives increases when ethylene glycol monomethyl ether is added to the fuel (US 3,639,109, C 10 L 1/18, 1972) .
With prolonged use of barium additives, carbon formation in the combustion chamber and spray nozzles increases, which impairs the performance of the engine. When using barium additives in gas turbine engines (GTE), corrosion in high and low temperature areas of the gas path for exhaust gases is enhanced. In addition, barium compounds are highly toxic and cause brain disease.
It is known that the antimoke additive, which is an organoelement compound - cyclopentadienyltricarbonyl manganese (CTM).
The introduction of this additive in an amount of 0.01-0.05% by weight reduces the smoke formation from 15 to 20% ("Manganese antiknock", edited by AN Nesmeyanov, 1971, pp. 192-199).
With the use of CTM additives to reduce the smokiness of fuels of a wide friction composition, fuels for gas turbines, and low-sulfur diesel fuels, there is an increase in deposits and carbon formation on individual engine parts, while the corrosive activity of the exhaust gases increases.
In addition, during operation for about 5-6 hours the antidemic effect is reduced due to the loss of the additive from the fuel.
The antimode additive (RU 2009175, 15.03.94) , which includes cyclopentadienyltricarbonyl manganese, dehydrated castor oil, lecithin and a solvent at the following component ratio, wt%, is closest to the proposed combination of features and the result achieved :
Cyclopentadienyltricarbonyl manganese - 15.0 - 25.0
Dehydrated castor oil - 10.0 - 20.0
Lecithin - 8.0 - 15.0
Solvent - Other
The use of this known additive makes it possible to increase the efficiency of smoke suppression to 25-36%, but the stability of the fuel is only 200-600 hours. At the end of this time, the antidemy effect of the additive is sharply reduced due to the precipitation of manganese-containing sediment from the fuel.
The proposal is aimed at increasing the effectiveness and stability of the antikoke additive.
This problem is solved by the fact that the anti-smoke additive for motor fuels including manganese cyclopentadienyltricarbonyl additionally contains dehydrated vegetable oil (DRM), p-hydroxydiphenylamine (GODFA) and monomethylaniline (MMA) at the following component ratio, wt%
Cyclopentadienyltricarbonyl manganese - 20.0 - 30.0
Dehydrated vegetable oil - 25.0 - 35.0
P-Hydroxydiphenylamine 0.02
Monomethylaniline - Other
Anti-smoke additive for motor fuels in accordance with the proposal provides smoke suppression up to 40% and increase in fuel stability up to 720 h.
With the content of these components in the additive outside these limits, the claimed technical result is not achieved.
When the content of the CTM is below 20% by weight, the smoke suppression efficiency is not ensured, and the ignition delay period is increased by more than 30% by weight.
The content of GODFA and DRM below 0.02 and 25% by weight, respectively, results in precipitation of the decomposition products of the CTM.
With an increase in the content of GODFA and DMR above 0.02 and 35% by weight, respectively, lacquer formation takes place. Hampering the engine.
Monomethylaniline in the additive is used as solvent components.
The procedure for the preparation of the antimutant additive consists in sequential dissolution in monomethylaniline at room temperature and continuous mixing of CTM, DRM and GODFA.
Below in Table. 1 shows the sample variants of the anti-smoke additive samples chosen for testing in accordance with the proposal.
The effectiveness of the proposed anti-smoke additive was tested on diesel fuel. The additive was introduced in an amount of 3 ml per 1 kg of fuel.
The test results in comparison with the prototype are presented in Table 2
CLAIM
The anti-smoke additive for motor fuels, including manganese cyclopentadienyltricarbonyl, characterized in that it additionally contains dehydrated vegetable oil, p-hydroxydiphenylamine and monomethylaniline at the following component ratio, by weight:
Cyclopentadienyltricarbonyl manganese 20.0 - 30.0
Dehydrated vegetable oil 25.0 - 35.0
Hydroxydiphenylamine 0.02
Monomethylaniline Other
print version
Date of publication 01.01.2007гг
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