The method of hydrofining of diesel fuel

 

(57) Abstract:

Usage: petrochemistry. Essence: the hydrofining of diesel fuel is carried out in the presence of three layers of catalyst. The first layer in the course of the raw material oxide allocability catalyst containing sulfur; a second oxide allocability catalyst, the third oxide allocability catalyst with an average radius of pores in the mass ratio of the first, second and third layers, equal(0,3 - 0,1) : (0,2 - 0,3) : (0,5 - 0,6) respectively. The process is carried out with a preliminary acarnanian layers of catalyst in the environment of hydrogen containing gas at 350 - 400°. table 1.

The invention relates to the refining, in particular to methods of Hydrotreating petroleum fractions.

There is a method of Hydrotreating a petroleum distillate in an environment of hydrogen at elevated temperature and pressure with the use of Ecumenical and aluminoborosilicate catalysts [1].

The closest in technical essence and the achieved effect is a method of Hydrotreating of diesel fuel at elevated temperature and pressure in the presence of aluminoborosilicate catalyst [2].

The disadvantage of this method [2] t is the finding is the decrease in the content of heteroatomic hydrocarbons in the hydrogenation product to 0.03 wt.%.

This goal is achieved by a method of hydrofining of diesel fuel at elevated temperature and pressure in the presence of the first layer aluminoborosilicate catalyst, optionally containing sulphur, the product of Hydrotreating, which is optionally in contact successively with the second layer of oxide aluminoborosilicate catalyst and with the third oxide layer alumnirelations catalyst with an average pore 80-37 when the mass ratio of the first, second and third layers, equal(0,3-0,1):(0,2-0,3):(0,5-0,6) accordingly, the process is carried out with a preliminary acarnanian layers of catalyst in the environment of the hydrogen-containing gas at a temperature of 350-400aboutC.

The hallmark of the invention are carrying out Hydrotreating in the presence of a package of consecutive layers almocabar and alumonickelsilicate catalysts, taken in the specified proportions, and use ecomonitoring catalyst with certain textural characteristics. This allows the most efficient use of one reactor for each catalyst, resulting in an increasing degree hydroalcohol and textural characteristics also increases the depth of Hydrotreating.

Activation of the catalyst is carried out elemental sulfur, taken in an amount of 10-20 wt.% from the total mass of the upper and middle layers of the catalyst at a temperature of 350-400aboutC. This technology is the activation of the catalyst increases its gidroobesserivaniya properties. In known ways of obtaining low-sulfur diesel fuel using the described technology is unknown. Thus, this solution meets the criteria of "novelty" and "significant difference".

As raw materials use diesel fraction 180-360aboutWhen the total sulfur content in the raw materials of 1.4 wt.%.

As the oxide aluminoborosilicate catalyst catalyst with a content of Moo3< 12 wt.%, Soo < 4 wt.%, aluminumalloy catalyst with a content of Moo310-18 wt.%, NiO 4-5 wt.%.

The feedstock is subjected to Hydrotreating. In the reactor in the course materials download three layers of oxide catalyst: top - allocability in a mixture with elemental sulfur, medium - allocability, and lower - aluminumalloy.

Conditions of the Hydrotreating process according to examples 1-6, the data on the sulfur content in the raw material and the hydrogenation product is given in the table. In this enterprise the described process allows to reduce the amount of heteroatomic hydrocarbons in the hydrotreated diesel fuel from 0.2 (prototype) to 0.03 wt.%. From these data, it also follows that the use of layers of catalysts, taken in a mass ratio exceeding specified or below it, or in other textural characteristics does not lead to the desired effect.

The METHOD of HYDROFINING of DIESEL FUEL at elevated temperature and pressure in the presence of the first layer of oxide aluminoborosilicate of the catalyst product of Hydrotreating, wherein using the first layer of the catalyst, optionally containing sulphur, the product of the Hydrotreating additional contact in series with a second layer of oxide aluminoborosilicate catalyst and with the third oxide layer alumnirelations catalyst with an average pore 80 - 370 when the mass ratio of the first, second and third layers 0,3-0,1 : 0,2-0,3 : 0,5-0,6 accordingly, the process is carried out with a preliminary acarnanian layers of catalyst in the environment of hydrogen containing gas at 350-400oC.

 

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The invention relates to the refining, in particular to methods of Hydrotreating petroleum fractions

The invention relates to the refining, in particular to methods of Hydrotreating petroleum fractions

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10 cl, 8 ex, 4 dwg

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40 cl, 2 tbl, 19 ex

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3 cl, 4 tbl, 13 ex

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7 cl, 2 tbl, 2 ex

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2 cl, 3 tbl, 10 ex

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4 tbl, 3 ex

FIELD: petroleum processing and petrochemistry.

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5 cl, 6 tbl, 12 ex

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2 ex

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29 cl, 8 ex

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2 cl, 1 tbl, 3 ex

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7 cl, 2 tbl, 2 ex

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2 cl, 5 tbl

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11 cl, 2 dwg, 2 ex

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19 cl, 1 dwg, 6 tbl, 2 ex

FIELD: petroleum processing.

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EFFECT: simplified technology and improved quality of product containing negligible quantities of sulfur.

2 cl, 4 ex

FIELD: production of super-low-sulfur diesel fuel; oil and gas producing industry.

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1 tbl, 3 ex

FIELD: petrochemical processes.

SUBSTANCE: major amount of hydrocarbon stock is brought into countercurrent contact with hydrogen in first reaction zone under hydrogenation reaction conditions in presence of hydrogenation catalyst in at least first catalyst bed wherein liquid leaving stream comes out of the bottom of the first reaction zone and hydrogen-containing gas stream comes out of the top of the first reaction zone. After that, insignificant part of hydrocarbon-containing stock comes into contact with above-mentioned hydrogen-containing gas stream in the second reaction zone accommodating catalyst bed disposed in such a way as to receive hydrogen-containing stream from the first reaction zone.

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19 cl, 7 dwg

FIELD: chemistry.

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EFFECT: developed processing method of base oil with viscosity index.

16 cl, 7 dwg, 3 tbl, 6 ex

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