Method of producing high octane gasoline

 

(57) Abstract:

Usage: petrochemistry. The inventive zeolite catalyst is treated with a solution of modifier - complexes derived siloxane with metal. The solution is passed through the catalyst with a bulk velocity of 0.5 - 1.5 cm3/cm3.with 70 - 80oC for 1 to 3 hours, the feed Rate of the solution can withstand more speed evaporation. The treated catalyst spend reforming of gasoline fractions. table 1.

The invention relates to the refining industry, and in particular to methods of producing high octane gasoline catalytic reforming.

Known methods for producing high-octane gasoline catalytic reforming of gasoline fractions (1,2).

In these ways (1,2) the necessity of using high pressure hydrogen (3,5-52,5 ATM) leads to the formation of large amounts of coke. In addition, in the methods (1,2) circulation of the hydrogen-containing gas in large quantities necessitates elevated energiza - TPAT.

A prototype of the chosen method of producing high-octane gasoline by catalytic reforming of gasoline fractions (3). In proizvodnjo of siloxane with metal. This pre-processing is produced as follows. The catalyst is poured a solution of aluminiumsilicon or its mixture with synkopenleben in the light aromatic fraction, mixed and incubated at an elevated temperature within 24 hours

Method (3) produces a target product with an octane number not exceeding 80 (p) by the motor method.

The technical result of the proposed method is to improve the quality of the target product by increasing its octane number.

This is achieved by pre-processing is carried out by passing the solution through the catalyst modifier with a bulk velocity of 0.5-1.5 cm3/s at a temperature of 70-80aboutC for 1-3 h, and the feed rate of solution of the modifier more speed evaporation.

The essence of the proposed technical solution is above the pre-processing.

The method is carried out as follows.

The catalyst loaded into the reactor under atmospheric pressure, heated to 550-650aboutC and calcined in a stream of purified and osmannoro air within 3-6 h to clean the surface from impurities.

Then coorectly 0.5-1.5 cm/cm2C for 1-3 h

As a modifier can be used, for example, a solution of aluminiumsilicon, alumnirelations or mixtures thereof in the ratio 50:50 mixture of acetone with toluene in a ratio of from 30:70 to 60:40.

The evaporation rate of the solvent regulate temperature or volumetric feed rate of solution of the modifier. At the end of the feed solution modifier system purge with an inert gas, such as nitrogen, methane or other within 15-30 min and start the rise of the temperature at a rate of 100aboutS/h with air or inert gas. The heating is carried out up to 400aboutC. At this temperature, spend warming up of the catalyst modifier for 1-3 hours and then the system is switched to the mode of reforming of gasoline fractions. When processing of the catalyst described by partial evaporation of the solvent leads to the formation of a saturated solution of a modifier, which modifier is deposited on the grains of the catalyst. While the octane number obtained after processing gasoline fraction rises to 83-92 (p. by the motor method).

P R I m e R 1. As the catalyst used ball aluminosilicate zeolite-containing catalyst, to whom he or pass-through by pass the solution of the modifier.

As a modifier use a solution of alumnirelations with aluminizirovannom in the ratio of 30:50 mixture of acetone with toluene in the ratio of 50:50.

Feed rate modifier is 0.3 cm3/cm3h

After treatment of the catalyst with a solution of the modifier catalyst calcined to 550aboutC for 3 h

As a source of raw materials for use reforming a gasoline fraction with the following characteristics. The boiling temperature of 50-70aboutWith the density of 138 kg/m3the refractive index nd201,2309, the octane rating of 68.2 p. (M. M.).

Reforming of gasoline fractions spend on running the installation at atmospheric pressure and elevated temperature.

After reforming get gasoline fraction having a density = 744 kg/m3the refractive index nd201,4330, octane 90,2.

P R I m m e R 2. As the catalyst used ball zeolite-containing catalyst, which is heated to 600aboutC and calcined for 5 hours and Then the catalyst was cooled to 70-80aboutAnd through it pass the modifier. As a modifier use a solution SUP>3/cm3h

After treatment of the catalyst with a solution of modifier its calcined to 550aboutC for 3 hours then the system is switched to the mode of reforming of gasoline fractions. As feedstock take a gasoline fraction with a boiling point is 50-170aboutWith density 738 kg/m3, a refractive index of nd201,239, octane 70,1 (n (m m).

After reforming of gasoline fractions get gasoline with an octane rating equal to 85.5 (n (m m), a refractive index of nd201,4300.

The results of further research are given in the table.

Thus, the proposed method allows to obtain a gasoline fraction superior quality with higher octane number (to 90.2) and refractive index (up 1,4330).

METHOD of producing high OCTANE GASOLINE by reforming of gasoline fractions in the presence of a zeolite catalyst at elevated temperature and atmospheric pressure using a pre-treatment of the catalyst with a solution of modifier - complexes derived siloxane with a metal, wherein the pre-treatment is carried out by passing SUP>C for 1 to 3 h, with the feed rate of solution of the modifier withstand more speed evaporation.

 

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SUBSTANCE: invention related to hydrofining of hydrocarbon mixtures with boiling range 35 to 250оС and containing no sulfur impurities provides catalytic composition containing β-zeolite, group VIII metal, group VI metal, and possibly one or more oxides as carrier. Catalyst is prepared either by impregnation of β-zeolite, simultaneously or consecutively, with groups VIII and VI metal salt solutions, or by mixing, or by using sol-gel technology.

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9 cl, 1 tbl, 4 ex

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SUBSTANCE: invention aims at reducing concentration of NOx and N2O in residual gas and provides a method wherein residual gas escaping absorption column, prior to enter turbine, is passed through two consecutive steps first reducing NOx content by catalytic reduction and then reducing N2O content by decomposing it into nitrogen and oxygen on catalyst containing one or more iron-loaded zeolites at working pressure 4-12 bar. Molar ratio NOx/N2O in residual gas before second step lies within a range of 0.001 to 0.5.

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10 cl, 2 dwg, 1 tbl, 2 ex

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10 cl, 1 tbl, 2 ex

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EFFECT: accelerated impurities conversion and reduced process cost.

17 cl, 2 dwg, 1 tbl

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17 cl, 6 ex

FIELD: petrochemical process catalysts.

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16 cl, 2 dwg, 2 tbl

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2 cl, 1 tbl, 25 ex

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11 cl, 4 dwg, 3 tbl, 16 ex

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