The method of obtaining liquid products of oil residues

 

(57) Abstract:

The invention relates to a method for producing liquid products of thermal cracking of petroleum residues in the mixture with a catalytic additive and can be used in the refining industry. Way to lead by mixing oil residues with natural zeolite containing 5-20% alumina, grinding it until the particle size is not more than 100 μm, the dispersion of the oil residue and thermocracking mixture at a temperature of 390-450oC, a pressure of 0.2 to 5 MPa and a flow rate of 1-6 h1. The zeolite can contain up to 7% iron oxides. The catalyst is introduced into the feedstock in the amount of 1-10%. The method provides a high yield of light oil products without intensive coke formation. 3 C. p. F.-ly.

The invention relates to a method for producing liquid products of thermal cracking of petroleum residues in the mixture with a catalytic additive and can be used in the oil industry.

A method of obtaining liquid products of oil residue thermal cracking in the presence of silicon-containing compounds (U.S. patent 4410418, class C 10 G 9/16, 1983 ). The disadvantage of this method is the 2">

Closest to the proposed method is a method of production of liquid products from petroleum residues by catalytic thermal cracking in the presence of aqueous solutions of antifoulants containing silicon in elemental state or in the form of organic and inorganic compounds (U.S. patent 4692234, class C 10 G 9/16, 1987 ).

The disadvantage of this method is the need to synthesize special additives, for example, Si(OEt)4.

The aim of the invention is to simplify the process technology due to the use as a catalyst powder of silicon containing compounds, which make use of natural zeolites.

The claimed method is carried out in the presence of natural zeolite containing 5-20% of aluminum oxide, which is crushed to particle size of not more than 1000 microns, and then mixed with oil residue and dispersed, and the resulting suspension is subjected to thermocracking at temperatures 390-450oC, a pressure of, preferably, 0.2 to 5.0 MPa with a bulk velocity, preferably, 1-6 h-1.

Natural zeolite may contain 0-7% iron oxides and enter it in the raw material is preferably in quantities of 1-10%.

Adherence to the stated conditions on new the ez intensive coke formation with a high output of light oil products with improved properties. Formed during the coke deposited on the catalyst and is carried away from the reaction zone.

Primer

In used as raw material oil. The oil is mixed with 5% crushed to particle size of 500 μm catalyst comprising a natural zeolite on the basis of silicon, containing 10% alumina. The resulting suspension is subjected to thermocracking at a temperature of 450oC, a pressure of 3 MPa and a bulk velocity of 3 h-1. As the target products get gasoline in the amount of 19.6 wt. % diesel fraction in the amount of 49.8 wt. % binder and a minor amount of coke.

Example 2

As raw materials use tar, which is mixed with 8% crushed to particle size of 1000 μm catalyst comprising a natural zeolite-based silicon containing 15% alumina and 5% iron oxides. The resulting suspension is subjected to thermocracking at a temperature of 400oWith the pressure of 5 MPa with a bulk velocity 6 h-1.

As the target products get gasoline to 12.5 wt. % diesel fraction - 40 wt. %, binder and a minor amount of coke.

Example 3

In used as raw material oil (density at 20o< is mixed with 2.5% crushed to particle size of 100 μm of the catalyst, representing natural zeolite on the basis of silicon that contains 12% aluminum oxide and 2.8% of iron oxides. The resulting suspension is subjected to thermocracking in running the unit with 420oC, pressure of 2.0 MPa with a bulk velocity of 1.5 h-1. The result is the target products: gas 5%, gasoline 15,0%, diesel fraction 37,0%, binder and a minor amount of coke.

Gasoline fraction has a density at 20oWith 746 kg/m3the sulfur content of 0.06 wt. %. Diesel fraction has a density at 20oWith 850 kg/m3the sulfur content of 0.09%, pour point -3oC.

1. Method of production of liquid products from petroleum residues by their mixing with the catalyst on the basis of silicon and subsequent thermal cracking units resulting mixture, characterized in that the catalyst used natural zeolite containing 5-20% of aluminum oxide, crushed to particle size of not more than 1000 μm, which is mixed with the oil residue is dispersed, and the resulting suspension is subjected to thermocracking when 390-450oC.

2. The method according to p. 1, characterized in that the zeolite may contain 0-7% iron oxide.

3. The method according to p. 1, characterized in that thermocracking vegetalismo mixed with the raw materials in the amount of 1-10 wt. %.

 

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