Fuel composition

 

(57) Abstract:

The inventive fuel composition contains 5,0-12,0% fraction of gasoline direct race NK-85oC; 1,0-15,0% isomerate; 1,0-3,0% toluene; 1,0-6,0% alkylbenzene; of 14.0-24.0% of catalytic cracking gasoline and up to 100% gasoline selective catalytic reforming reformate. table 2.

The invention relates to liquid petroleum fuel composition based gasoline obtained by catalytic reforming of crude oil used in automotive vehicles.

Known composition of motor fuel consisting of 65,0% gasoline from a catalytic reforming process, 20.0% gasoline from catalytic cracking and 5.0% of alkylate, butane and isopentane and containing as antidetonation additive tetraethyl lead and triplethreathoney phosphate (1).

Also known composition of motor fuel consisting of by 60.0-75.0% of gasoline catalytic reforming, 13,0-15,0% gasoline catalytic cracking, 15.0% alkylate, 5,0-10,0% butane and 3.0-5.0% of diisopropyl ether and containing as antideficiency additives tetraethyl lead, dichlorotin, dibromoethylene, demethylcitalopram (2).

A common shortcoming of these top.

Known composition of unleaded gasoline, consisting of 70,0 wt. the reformate to 26.0 wt. alkylate and 4.0 wt. aromatic hydrocarbons (3).

Also known composition of unleaded gasoline, consisting of 60 wt. the reformate, 20.0 wt. alkylate, 15 wt. aromatic hydrocarbons and 5.0 wt. light straight-run gasoline (3).

The common disadvantage of these compositions is that for production of gasoline with O. H. 93 I. m and 85 m m required to engage in composition to 26.0 wt. alkylate, 15.0 wt. aromatic hydrocarbons.

A method of obtaining high-octane gasoline, where rectangular gasoline fraction, previously hydrotreated, is subjected to reforming to known catalysts and under certain conditions. The resulting reformate is subjected to hydrodewaxing at a temperature of 320-420oC, a pressure of 1.0-3.0 MPa, the space velocity of the raw material 218 h-1, the ratio of hydrogen:feedstock 600:1500 nm3/m3on palladian.inheritor the catalyst having a mass ratio of VK-zeolite Pd form: zeolite:aluminum oxide, equal to 1.0:0.05 to 1.0 second.

The resulting gasoline has a high anti-knock properties (octane number: m m 85-89 and I. M. 96-98) and low sebastain, the resulting gas contains a large amount of aromatic hydrocarbons (52,0-65,0 wt.).

Closest to the technical nature of the alleged invention is a fuel composition, which is used as a base reformate obtained by the catalytic reforming of gasoline fractions 100-180oC at a temperature of 505oC and a pressure of 2.5 MPa in the presence of Pd-Re/Al2O3catalyst and faction 146-218oC, selected from the reformate, as well as isomerizate obtained when isomerizate, obtained by isomerization gasoline fraction NC-70oC at a temperature of 130oC and a pressure of 7.5 MPa in the presence of a catalyst containing 0.35% of Pt on Al2O3(4,5% Cl) (5). The specified fuel composition has the following composition, about.

reformate (fraction 52-186oC) 20,0-35,0

fraction 146-218oC, isolated from reformate fraction 52-186o- 25,0-35,0

isomerizate 25,0-50,0

gasoline direct race (faction 70-100o) 10,0

gasoline direct race (faction 100-180o) 5,0

reformate (fraction 49-193o) 44,0-75,0

toluene 11,0

This unleaded gasoline has an octane number according to research method 92,4-to 95.3 points.

The disadvantages of p is ion (final boiling point 10% fraction of gasoline 73-76oC, the content of aromatic hydrocarbons 52-55 wt. ) properties. In addition, the fuel contains a significant amount of expensive isomerate (about 40-50.), causing to the high cost of fuel composition. Use fractions 146-218oC requires additional site rectification.

The aim of the invention is to improve the antiknock characteristics and operational properties of the fuel composition, as well as reducing its cost.

This goal is achieved by using as the basis of gasoline from selective catalytic reforming reformate. In addition, the fuel composition contains additionally alkilbenzin and gasoline produced from the catalytic cracking of vacuum gasoil, in the following ratio, wt.

gasoline from selective catalytic reforming reformate: 54,0-70,0

gasoline direct race (fraction MK-85oS): 5,0-12,0

isomerizate: 1,0-15,0

toluene: 1,0-3,0

alkilbenzin: 1,0-6,0

the catalytic cracking gasoline: 14,0-24,0

The essence of the proposed invention consists in the following. As the base used gasoline from selective catalytic reforming Ref to 12.0 wt. the isomerized product of 1.0-15.0 wt. toluene 1.0 to 3.0 mass. and alkylbenzenes in the amount of 1.0 to 6.0 wt. and gasoline catalytic cracking in the amount of 14.0-25,0 wt. The composition of the proposed fuel composition was selected from the following considerations.

Gasoline from selective catalytic reformate has a number of advantages: high octane number research (Acting PM) and the motor method (M. O. H.), stability, low content of sulfur. The disadvantage of the relatively high content of aromatic hydrocarbons, therefore the increase in the content of the gasoline fuel composition more 70,0 wt. leads to an increase in the content of aromatic hydrocarbons and, as a consequence, carbon deposition. The catalytic cracking gasoline has the advantages of high Acting Including low content of aromatic hydrocarbons. Increasing the number of catalytic cracking gasoline in the fuel composition to 25.0 wt. degrades the performance properties of the fuel composition (low chemical stability, high temperature wikipedist 10% and 50%). Alkilbenzin has the advantages of high M. O. H. stability, low content of sulfur. Increase alkylbenzene in the fuel composition is more than 10.0 wt. not economically, wid the Dov to 36.8-to 44.0 wt. in the proposed fuel composition recommended to involve the fraction of NC-85oWith gasoline direct the race. The increase in the number fraction of NC-85oIn the fuel composition is greater than 12.0 wt. affects the qualitative properties of the fuel composition. Isomerizate has the advantages of high M O. H, stability, low content of sulfur. The increase of the isomerized product in the fuel compositions of more than 15.0 wt. not economical because of the high cost of the isomerized product.

The resulting fuel composition according to all indicators meet the requirements of GOST-2084-77 and corresponds to the brand of unleaded motor gasoline AI-93.

The following are specific examples of the implementation of the proposed invention.

P R I m e R 1.

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 6,0

gasoline direct race (fraction MK-85oC) 10,0

isomerizate 8,0

toluene 3,0

alkilbenzin 5,0

the catalytic cracking gasoline 14,0

In this example, the main component of the proposed fuel compositions have the following manner. Hydrotreated fraction 85-180oWith subjected to reforming at a temperature of 505o is directed to selective reforming in a reactor, in which the catalyst PT-Re/Al2O3partially replaced by paradisesity analizator having a mass ratio VK-zeolite in PD form: zeolite: aluminum oxide, equal to 1.0:0.05 to 1.0 second.

The process is conducted under the following conditions: a temperature of 420oC, pressure of 2.0 MPa, the space velocity of the raw material 17,0 h-1, the ratio of hydrogen:the raw material is 100 nm3/m3.

Gasoline direct race (Franks NC-85oC) get with AVT octane 71-74 by the motor method.

Isomerizate is obtained from the hexane fraction at a temperature of 120-150oC, a pressure of 4 MPa, the space velocity of the raw material of 0.5-2.0 h-1and a molar ratio of hydrogen:the raw material is 4:1.

Toluene, which is used for cooking fuel composition, corresponds to GOST 14710-69 and alkilbenzin THE 38.101372-72.

The catalytic cracking gasoline obtained when cracking of vacuum gasoil microspheric zeolite catalyst at a temperature of 490-530oWith installations G-43-107 or 1A/1M. Qualitative characteristics of all components of the proposed fuel composition shown in table 1.

Received a major component of the proposed fuel composition. is alwala, 5.0 wt. alkylbenzene and 14.0 wt. catalytic cracking gasoline. Characteristics of the obtained fuel composition are shown in table 2. As can be seen from the data obtained fuel composition according to all indicators meet the requirements of GOST on automotive unleaded gasoline AI-93.

P R I m m e R 2.

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 55,0

gasoline direct race (fraction MK-85o(C) TO 12.0

isomerizate 15,0

toluene 1,0

alkilbenzin 1,0

the catalytic cracking gasoline 16,0

In this example, the components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming of reformate in the number 55,0 wt. mixed with 12.0 wt. gasoline direct race (fraction MK-85oC), 15.0 wt. isomerate 1,0% toluene and alkylbenzene, 16,0 wt. catalytic cracking gasoline. The results of the experiment are shown in table 2.

P R I m e R 3.

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 54,0

gasoline direct race (fraction MK-85oC) 5,0
the m example components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming of reformate in the number of 54.0 wt. mixed with 5.0 wt. gasoline direct race (fraction MK-85oC) 10 wt. isomerate, 1,0 wt. toluene, 6.0 wt. alkylbenzene and 24.0 wt. catalytic cracking gasoline. The results of the compounding shown in table 2.

P R I m e R 4.

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 70,0

gasoline direct race (fraction MK-85oC) 8,0

isomerizate 1,0

toluene 1,0

alkilbenzin 1,0

the catalytic cracking gasoline 19,0

In this example, the components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming of reformate in the amount of 70 wt. mixed with 1.0 wt. gasoline direct race, isomerate and alkylbenzene and 19 wt. catalytic cracking gasoline. The results of the compounding shown in table 2.

P R I m e R 5 (comparative).

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 75,0

gasoline direct race (fraction MK-85oC) 4,0

Isom the components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming of reformate in the number 85,0 wt. mixed with 4.0 wt. gasoline direct race (fraction MK-85oC) 1.0 wt. isomerate and toluene, 5.0 wt. alkylbenzene and 14.0 wt. catalytic cracking gasoline. The results of the compounding shown in table 2. If anti-knock characteristics of the obtained fuel composition meets GOST 2084-77, the content of aromatic hydrocarbons is significantly above the state standard ($48.3 wt.).

P R I m e R 6 (comparative).

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 60,0

gasoline direct race (fraction MK-85oC) 3,0

isomerizate 21,0

toluene 1,0

alkilbenzin 1,0

the catalytic cracking gasoline 14,0

In this example, the components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming of reformate in the number 60,0 wt. mixed with 3.0 wt. gasoline direct race (fraction MK-85oC) to 21.0 wt. isomerate, 1,0 wt. toluene and alkylbenzene and 14.0 wt. catalytic cracking gasoline. The compounding results presented in table.

P R I m e R 7 (comparative).

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 54,0

gasoline direct race (fraction MK-85oC) 6,0

isomerizate 1,0

toluene 1,0

alkilbenzin 23,0

the catalytic cracking gasoline 15,0

In this example, the components of the proposed fuel composition obtained in much the same way as in example 1. Gasoline from selective catalytic reforming reformate 54 wt. mixed with 6.0 wt. gasoline direct race (fraction MK-85oC) 1.0 wt. isomerate and toluene, 23 wt. alkylbenzene and 15 wt. catalytic cracking gasoline. The results of the compounding shown in table 2. Received fuel composition meets the requirements of GOST 2084-77, but has a high cost.

P R I m e R 8 (comparative).

Fuel composition contains, by weight.

gasoline from selective catalytic reforming reformate 55,0

gasoline direct race 3,0

isomerizate 7,0

toluene 5,0

alkilbenzin 1,0

the catalytic cracking gasoline 29,0

In this example, the components of the proposed fuel composition obtained in the same sprashivaut with 3.0 wt. gasoline direct race, 7.0 wt. isomerate 5.0 wt. of toluene, and 1.0 wt. alkylbenzene and 29 wt. catalytic cracking gasoline. Received fuel composition contains a large amount of actual resin (3.6 mg/100 ml), which can lead to chemical instability. The results of the compounding shown in table 2.

The data in the table show that the proposed fuel composition has advantages compared with the known. So, the octane number by m m the proposed fuel composition is equal to 85.7-86,4, the content of aromatic hydrocarbons is reduced to 36.8-to 44.0 wt. The content of the isomerized product is reduced to 15 wt. that greatly reduces the cost.

The estimated economic effect from implementation of the proposed fuel composition will be 2.8 million rubles at the output of 100000 tons of gasoline AI-93 due to the difference in the cost of gasoline in the existing production and when you get a new song.

Fuel composition based on the catalytic reforming of gasoline with the addition of fractions of gasoline direct race, isomerate and toluene, characterized in that as the Foundation it contains the gasoline selective catalytic reforming reformatorische cracking in the following ratio of components, wt.

Fraction of gasoline direct race NK-85oC 5 12

Isomerizate 1 15

Toluene 1 3

Alkilbenzin 1 6

The catalytic cracking gasoline 14 24

Gasoline selective catalytic reforming reformate 100

 

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