RO119200B1 - Composition for improving the properties of ecologic essences - Google Patents

Abstract

According to the invention, the composition comprises, in percentage by weight, from 40 to 60 % of C1-C8 aliphatic alcohols, preferably methanol, ethanol, isopropanol, octanol, from 35 to 50 % of aromatic hydrocarbons, preferably toluene or xylene, from 5 to 10 % of esters of saturated monocarboxylic C1-C4 organic acids C1-C4 with C1-C4 aliphatic alcohols, preferably tert-butyl acetate or normal-butyl acetate, from 0.010 to 0.020 % of amine-type corrosion inhibitors, preferably mono-, di- or triethanolamine, from 0.010 to 0.020 of ethoxylated alkylphenole-type detergent, preferably ethoxylated nonylphenole having 9 or 10 ethylene oxide molecules, said composition being added in a ratio from 5 to 10 % volumes into the atmospheric distillation essences or into the catalytic reforming essences.

Description

The invention relates to a composition based on organic compounds for improving the properties of green gasoline.

Eco-friendly petrol is known for cars, in which oxygenated organic compounds (ethers, alcohols, esters) are introduced, in order to eliminate totally or partially lead tetraethyl (TEP), an additive to increase the highly toxic octane, which burns with formation. of deposits. Oxygenated organic compounds contribute to both the increase of the octane number and to the reduction of CO and raw gas emissions. Of the oxygenated organic compounds, methyl / t-butyl ether (MTBE) is the most commonly used and is introduced into gasoline in proportion to

11 .. .15% volume. MTBE has the disadvantage that it is carcinogenic. Also, MTBE is a deficient product, the manufacturing possibilities being limited by the quantities of available raw materials (isobutylene and isoamylene respectively).

The problem solved by the invention is the elaboration of a multifunctional composition, which, added to the fractions of gasoline, reduces the pollutant emissions (CO, NO) and unburnt hydrocarbons) and increases the octane number of the gasoline.

The composition according to the invention eliminates these disadvantages by the fact that it is made up by weight percentages of: 40 ... 60% aliphatic alcohols C 1 O 2, preferably methanol, ethanol, isopropanol, octanol; 35 ... 50% aromatic hydrocarbons, preferably toluene or xylene;

5 .. .0% esters of C ₁ -C ₄ saturated monocarboxylic organic acids with aliphatic alcohols C, - C ₄ preferably te / t-butylacetate or normal-butylacetate; 0.010 ... 0.020% corrosion inhibitors such as amines, preferably mono-, di- or fr / ethanolamine; 0.010 ... 0.020% detergent of the ethoxylated alkylphenols type, preferably nonoxylated nonylphenol with 9 or 10 ethylene oxide molecules, the composition adding 5 to 10% volume to atmospheric distillation or catalytic reforming gases.

The composition according to the invention has the following advantages:

- increasing the octane number of green gas stations;

- improves their combustion;

- reduces the phenomenon of corrosion in car engines;

- prevents the formation of deposits on the engine parts;

- it can also be used as a diluent for the degreasing of auto parts and subassemblies, below are two examples of embodiment of the invention.

Example 1. 500 kg methanol, 450 kg p-xylene, 50 kg normal-butylacetate, 0.15 kg triethanolamine, 0.10 kg nonylphenol ethoxylate with 9 ethylene oxide molecules are introduced into an autoclave with a capacity of 1500 kg. and stirred for one hour for homogenization.

Approximately 1000 kg of composition is obtained to improve the properties of green gasoline, the characteristics of which are presented in table 1.

Table 1

Characteristics Composition for improving the properties of green gasoline Example 1 Example 2 appearance clear liquid clear liquid Density at 20 ° C, g / cm ³ 0.810 to 0.830 0.805 to 0.825 Kinematic viscosity at 20 ° C, cSt 0.85 to 1.20 0.82 to 1.15

RO 119200 Β1

The product thus obtained is added in a proportion of 5 ... 10% volumes in 45 atmospheric distillation gases or catalytic reforming gases and leads to an increase in the octane Research (COR) by 4 ... 7 units compared to 4. .5 units when using 13% MTBE volumes (Table 2).

Table 2

Sample name Composition for improving the properties of green gasoline CHOIR Example 1 Example 2 Atmospheric distillation gasoline - Not additive 70 70 - Additive with: -13% MTBE volume 75 75 - 5% volume Composition 74 73 -10% volume Composition 77 76 Catalytic reforming gasoline - Not additive 92 92 - Additive with: -13% MTBE volume 96 96 - 5% volume Composition 96.8 95.5 -10% volume Composition 98 97

The product also improves the burning of environmentally friendly petrol, reduces the phenomenon of corrosion and prevents the formation of deposits on the parts of motor vehicles.

Example 2. Proceed as in Example 1 with the exception that 500 kg 70 isopropanol, 450 kg p-xylene, 50 kg normal-butylacetate, 0.15 kg triethanolamine and 0.10 kg nonylphenol ethoxylate with 9 ethylene oxide molecules are used.

The resulting product (table 1) increases the COR octane number of green gasoline by 3 ... 6 units when used in an amount of 5-10% volumes (table 2). It has the same effects on combustion, corrosion and deposit formation in engines as composition 75 obtained according to example 1.

The examples are not limiting as to the nature and concentration of the components included in the description.

Claims (1)

Claim Composition for improving the properties of organic gasoline based oxygenated compounds, characterized in that it is made up by weight percentages of: 40 ... 60% C, - C ₈ aliphatic alcohols, preferably methanol, ethanol, isopropanol, octanol 35 ... 50% aromatic hydrocarbons, preferably toluene or xylene; 5 ... 10% esters of the 85 monocarboxylic organic acids saturated C, - C ₄ with aliphatic alcohols C, -C ₄ , preferably te / t-butylacetate or normal-butylacetate; 0.010 ... 0.020% corrosion inhibitors such as amines, preferably RO 119200 Β1 mono-, di- or triethanolamine; 0.010 ... 0.020% detergent of the ethoxylated alkylphenols type, preferably nonoxylated nonylphenol with 9 or 10 ethylene oxide molecules, the composition being added 90 in proportion of 5 ... 10% volumes to atmospheric distillation gases or catalytic reforming gases.