RU2260034C1 - Motor gasoline additive - Google Patents

Abstract

FIELD: petroleum processing and petrochemistry.

SUBSTANCE: antiknock additive contains 0.1-0.5% organomanganese compound, 10-35% aromatic amine, 0.1-1.5% "Keropur-3430 N", and balancing amount of oxygenate. Aromatic amine may be N-methylaniline or an agent based thereof and oxygenate is selected from the group consisting of methyl alcohol, ethyl alcohol, methyl t-butyl ether, and mixture thereof.

EFFECT: improved antiknock properties.

3 cl, 2 tbl

Description

The present invention relates to the field of oil refining and the automotive industry, specifically to the composition of the additive, designed to improve the anti-knock properties of gasoline.

Known use in the composition of automobile gasoline antiknock additives based on N-monomethylaniline (A.M. Danilov The use of additives in fuels for automobiles. Reference publication. M., Chemistry, 2000, p.232) or oxygenates, which include low molecular weight alcohols, their ethers and their mixtures ("Chemistry and technology of fuels and oils", 1994, No. 2, p. 35-38).

Known additives containing N-monomethylaniline and oxygenates in their composition. Thus, for example, a fuel additive is known comprising methyl tert-butyl ether, N-monomethylaniline, a mixture of C ₃ -C ₈ alcohols, methyl alcohol and an organometallic compound, for example, iron naphthenate or manganese naphthenate, ferrocene, or a mixture thereof. (Patent NDP No. 108252, C 10 L 1/30, 1981).

However, this additive is not effective enough and when introduced into automobile fuels, its increased consumption is required.

Known additive to gasoline containing ethers - 0.5-0.75 vol.%; alcohols - 0.3-2.0 vol.%; amines - 0.3-1.5 vol.%. Ethyl alcohol can be used as alcohol, and N-monomethylaniline as an amine. To achieve the required antiknock properties, up to 0.8 vol.% Tetraethyl lead is introduced into gasolines, which worsens their environmental characteristics. (French Patent No. 2050841, C 10 L 1/00, 1971).

Known multifunctional additive to motor gasolines based on N-monomethylaniline, an organic derivative of manganese and detergent additive "AUTOMAG". The additive may contain an antioxidant additive. (RF patent No. 21114901, C 10 L 1/18, 1/22, 1998).

Increased wear of engine parts, reduced reliability of spark plugs and high (up to 5.0%) content of expensive manganese compounds limits the possibility of using this additive.

Known additive to gasoline based on oxygenates with the addition of C ₆ -C ₈ aromatic amines 7-94%, shielded phenols or bisphenols 0.1-2.0%, the reaction products of C ₁₀ -C ₄₀ aliphatic amines or C ₆ - With ₈ aromatic amines, ethoxylated C ₈ -C ₉ alkylphenols with 4-12 hydroxyethyl groups with oxidized hydrocarbons or monobasic C ₁₀ -C ₂₂ fatty acids, or dibasic C ₁₀ -C ₂₀ acids, or a mixture of the reaction products 0.5 -10% and aminophenols 0.1-2.0%. As oxygenates, the additive contains methyl tert-butyl ether, mixtures thereof with isobutyl, methyl or ethyl alcohol or dioxane alcohols. (RF patent No. 2078118, C 10 L 1, 18, 1/22, 1995).

However, this additive has insufficiently high antiknock properties and, in addition, the production technology of this additive is energy-intensive, which makes its practical use disadvantageous.

Closest to the proposed is a multifunctional additive to motor gasoline, containing, wt.%: Ferrocene 0.05-3.0; antioxidant 0.1-0.2; aniline 0.1-10.0; washing additive "AUTOMAG" not more than 6.0; oxygenates selected from the group: aliphatic C ₁ -C ₅ alcohols, straight or branched alcohols, or mixtures thereof, and / or ethers, or mixtures thereof, not more than 95.0; N-monomethylaniline 4.0-98.0. (RF patent No. 2132359, C 10 L 1/18, 1/22, 1999).

However, the content of the ferrocene additive in the composition affects the increase in wear of engine parts, the AUTOMAG washing additive does not provide the required level of washing properties and, moreover, this additive is not produced at present due to the cessation of the production of the main raw material for its production - synthetic fatty acids .

The objective of the invention is the development of additives to gasoline based on non-deficient products of industrial production, with improved anti-knock properties.

To solve this problem, an additive to motor gasoline is proposed, containing, wt.%:

organic manganese derivative 0.1-0.5 aromatic amine 10-35 Keropur 3430 N 0.1-1.5 oxygenate up to 100

Moreover, the oxygenate is selected from the group: methyl alcohol, ethyl alcohol, methyl tert-butyl ether or a mixture thereof. As an aromatic amine, the additive may contain N-monomethylaniline or an additive based on it.

The combination of the above components is new, the selected ratio of the components provides the additive with high antiknock properties.

The components used in the additive are industrial products.

Organic manganese derivative - domestic additives based on methylcyclopentadienyltricarbonyl manganese or imported based on it, for example, Hightek 3062 additive.

Aromatic amine - technical N-monomethylaniline - TU-2471-269-00204168-96 or additives based on it, for example,

Additive ADA - TU 38.401-58-61-93

Methyl alcohol - GOST 222-78 E

Ethyl alcohol - GST 17299-78

Methyl tert-butyl ether - TU 38.103704-90.

Keropur 3430 N is an additive to gasoline, which is a mixture of amines, polyester, a corrosion inhibitor and special mineral oils. It is a clear, yellowish, viscous liquid with the following characteristics:

Density at 15 ° C about 0.860 g / cm ³ Viscosity at 20 ° C about 120 mm ² / s Flash point more than 55 ° C Pour point below minus 20 ° С

It gives a clear solution in organic solvents. Slightly soluble in water at 20 ° C

The proposed additive is prepared by non-waste technology using standard equipment by mixing the components to obtain a homogeneous solution.

To illustrate the claimed technical solution was prepared 4 samples of the proposed additives, the composition of which is given in table 1.

The physicochemical and operational properties of the prepared samples are shown in Table 2. The detonation resistance was evaluated by the motor method according to GOST 511-82 at the UIT-85 installation by the increase in the octane number of the reference mixture of isooctane and n-heptane taken in the ratio of 70:30, respectively. The greater the increase in octane number, the higher the antiknock properties of the additive. The data given in table 2 confirm that the proposed composition of the additive has improved antiknock properties - the growth of the octane number is 1.5-2 times higher than that of the known mixed antiknock additives.

Table 1.
The composition of the samples of the proposed additives. №№ p.p. Name of components The content of components in the samples,% wt. 1 2 3 4 1. Hi-Tech 3062 0.34 0.24 0.14 0.13 2. ADA additive 30.1 20.6 11.8 11.0 3. Keropur 3430 N 1,1 0.8 0.45 0.4 4. Methyl alcohol 68.46 26.81 5. Ethanol 78.36 42,4 6. Methyl tert-butyl ether 60.8 46.07 Table 2.
Physico-chemical and operational properties of the samples of the proposed additives. №№ p.p. The name of indicators Sample Values 1 2 3 4 1. Density at 20 ° С, kg / m ³ 845 827 784 789 2. Mass fraction of water,% 0.117 0.370 0,072 0.230 3. The concentration of additives in the reference mixture,% wt 4,5 6.1 11.1 11.9 4. The increase in the octane number of the reference mixture. 10,2 11.6 4.3 15.8 5. Phase stability: The cloud point of Normal-80 gasoline with the introduction of additives, ° C Minus 31 below
minus
65 below
minus
65 below
minus
65

Claims (3)

1. An additive to motor gasoline, including oxygenate, aromatic amine, an organometallic compound and a detergent additive, characterized in that it contains an organic manganese derivative as an organometallic compound and Keropur-3430 N as a detergent additive in the following ratio, wt.% : Organic Manganese Derivative 0.1-0.5 Aromatic amine 10-35 Keropur-3430 N 0.1-1.5 Oxygenate Up to 100 2. The additive according to claim 1, characterized in that the oxygenate is selected from the group of methyl alcohol, ethyl alcohol, methyl tert-butyl ether or a mixture thereof. 3. The additive according to claims 1 and 2, characterized in that it contains N-monomethylaniline or an additive based on it as an aromatic amine.