Method of producing high octane gasoline

 

(57) Abstract:

The invention relates to a catalytic process for the production of unleaded gasoline and can be used in the refining and petrochemical industries. The essence of the invention is a method for high-octane gasoline by contacting registertimer C3- C5hydrocarbons of any nature with servicecompany zeolite containing gallium, at a temperature of 300-400oC, a pressure of 0.1-0.5 MPa and space velocity of the raw material from 1000 to 7000 h-1that allows you to obtain the target fractions with high yield, increase service life and performance of the catalyst, and also to expand the raw material base. The conversion of n-olefins is 71-96,3 wt.%. table 2.

The invention relates to a catalytic process for the production of unleaded gasoline and can be used in the refining and petrochemical industries.

A method of obtaining high-octane gasoline from wikipaedia to 200-220oC hydrocarbons by contacting in an environment of hydrogen containing gas at elevated temperature and pressure with a catalyst, soledat in the presence of carbon monoxide II and/or carbon monoxide IV. The process is carried out at 280-460oC, a pressure of 0.3 to 10 MPa, mass flow rate of feed of 0.2-10.0 wt.h/wt.h per hour space velocity of hydrogen containing gas 1000-22100 about.h/R.h. per hour, a molar ratio of hydrogen and the mixture monoxide and carbon dioxide, equal to 1 to 20, and the molar ratio of carbon monoxide to the dioxide, equal to 0.02-1000. When using raw materials containing paraffins and naphthenes, the process is carried out at 350-440oC, a pressure of 1-10 MPa, feedstock containing olefins, with 300-400oC, a pressure of 0.5 to 6 MPa [1]. The disadvantage of this method is that the process is carried out in an environment of hydrogen and carbon oxides at high pressure.

Closest to the claimed technical solution is the way to obtain gasoline fractions from the lungs registergui hydrocarbon, C2-C3using zeolites ZSM-5 or ZSM-11, containing 0.1 wt.% gallium or thorium, as a binder using clay, metal oxides, and combinations thereof. The process is conducted at temperatures up to 700oC and a pressure of 0.1-6 MPa and mass feed rate of the raw material is from 0.1 to 400 h-1. Under these conditions, the yield of the target fraction is 9.5-of 21.9 wt.%, and the performance of the catalyst up to 0.2 kg/l [2].

Significant nedou and consequently, reducing the service life of the catalyst, the low yield of the desired fractions, the low productivity of the catalyst and limited natural resources.

The essence of the invention is a method for high-octane gasoline by contacting registertimer C3-C5hydrocarbons of any nature with servicecompany zeolite containing gallium, at 300-400oC, a pressure of 0.1-0.5 MPa and space velocity of the raw material from 1000 to 7000 h-1that allows you to obtain the target fractions with high yield, increase service life and performance of the catalyst, but also to expand the raw material base.

As registertimer hydrocarbons can be used

exhaust gases from the catalytic cracking of C3-C5;

fraction C4pyrolysis after extraction of butadiene and isobutylene;

fraction C5pyrolysis after removal of cyclopentadiene and dienes;

gases thermoperiod heavy oil residue (visbreaking, coking, and so on)

When comparing essential features of the invention (using C3-C5hydrocarbon fractions as registertimer raw materials, they are new and are not described in the prototype, consequently, it is possible to draw a conclusion on the conformity of the proposed technical solution the criterion of "novelty".

The invention allows to obtain the target fraction with a high yield, to increase the productivity of the catalyst, to expand the resource base at the expense of involvement in the process additionally hydrocarbon, C4-C5also in addition to obtain the isobutylene content in butylene fraction of the exhaust gases of the proposed method reaches 50 wt.%, it is impossible to carry out any similar way and that indicates the "inventive step" of the proposed method.

The claimed invention can be implemented in the industry, which confirms the compliance with the criterion "industrial applicability".

Example 1. The contacts 28 l registertimer raw material composition, wt.%:

Propane - SL.

Propylene - 9,5

The amount of butane - 3,5

The amount of butylene - 80,0

The amount of pentane - 2,0

The amount of pentanol - 3,0.

with volumetric feed rate 7000 h-1carried out in a flow type reactor, loaded with a stationary layer servicecompany zeolite catalyst with a volume of 4 ml containing 80 wt.% SiO2and 20 mA is e - 0.5 MPa. In the contact is formed 73% of the gasoline fraction C5+and 27% of hydrocarbon gases, the conversion of n-olefins is of 87.5 wt.%.

The process conditions and the yield of products of the reaction are shown in table 1. Properties of gasoline are shown in table 2.

Examples 2-5. Exercise similar to that described in example 1. The process conditions and the yield of products of the reaction are shown in table 1. Properties of gasoline are shown in table 2.

Examples 6-11. Exercise similar to that described in example 1. At the same time as raw materials use registereda hydrocarbons of the following composition, wt.%:

Propane - SL.

Propylene - 50,0

The amount of butane 1,5

The amount of butylene - 30,0

The amount of pentane - 2,5

The amount of pentanol - 3,0

The process conditions and the yield of products of the reaction are shown in table 1. Properties of gasoline are shown in table 2.

As seen from the above examples, at a temperature of 300-400oC, a pressure of 0.1-0.5 MPa and space velocity of the raw material from 1000 to 7000 h-1the conversion of n-olefins reaches 71-96,3 wt.%, however, the performance of the catalyst for gasoline is 1.2-10 kg/l Kutch.

Way obtained Ramasamy zeolite, containing gallium at a temperature of 300 - 400oC, a pressure of 0.1 - 0.5 MPa, characterized in that as registertimer raw materials use C3-C5hydrocarbon fractions and the process is carried out at a volumetric feed rate of raw materials 1000 - 7000 h-1.

 

Same patents:

The invention relates to an integrated device for the production of high-octane gasoline fractions and/or aromatic hydrocarbons, C6-C10by catalytic processing of organic raw materials on the basis of hydrocarbons, oxygen-containing compounds or mixtures thereof

The invention relates to methods for alkylation of aromatic compounds in the presence of a synthetic porous crystalline zeolite as a catalyst for alkylation

FIELD: petrochemical processes.

SUBSTANCE: feedstock olefins are submitted to oligomerization in contact with zeolite oligomerization catalyst and C4-hydrocarbons isolated from resulting products are then aromatized on zeolite aromatization catalyst. Hydrogen-containing dry gas recovered from aromatization products is used for oligomerization-preceding selective hydrogenation of butadiene in feedstock to give butylene-enriched starting material.

EFFECT: prolonged catalyst lifetime.

3 cl, 3 tbl

FIELD: petrochemical processes.

SUBSTANCE: at least one-step oligomerization (step b) is carried out or this oligomerization is carried out in two steps: limited oligomerization b1 and final oligomerization b3, wherein catalytic oligomerization of olefins having 4 carbon atoms is carried out in presence of other olefins also contained in charge, these other olefins belonging to group consisting, on one hand, of ethylene and, on the other hand, of C5- or C6-olefins to produce oligomers. Further, in step d, at least part of oligomers obtained is subjected to catalytic cracking in reactor differing from oligomerization reactor to produce, in particular, propylene. Process also allows fixed-, moving-, and fluidized-bed cracking to be performed and additional oligomers to be possibly obtained.

EFFECT: optimized yield, conversion, and propylene selectivity.

19 cl, 2 dwg, 5 tbl, 3 ex

FIELD: industrial organic synthesis.

SUBSTANCE: linear alpha-methylstyrene dimers that can be used as molecular weight regulators for various polymers, as varnish solvents, and as base material in production of synthetic oils are obtained via oligomerization of α-methylstyrene in presence of zeolite ZSM-12 in H form in amount 1 to 10% at temperature 60-120°C.

EFFECT: increased selectivity and simplified production process.

1 tbl, 8 ex

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for synthesis of linear unsaturated dimmers of α-methylstyrene that are used as modifying agents in manufacturing polymers. Method is carried out by the dimerization reaction in the presence of zeolite Y at the mole ratio SiO2/Al2O3 = 6.2-7.0 in NaH-form and ionic exchange degree 40-60%. The amount of catalyst is 1-5 wt.-%, the reaction temperature is 40-800C. Invention provides increasing working time of catalyst and improving indices of the process.

EFFECT: improved method of synthesis.

9 ex

FIELD: chemical industry; methods of production of the linear dimmers of a-methylsterene.

SUBSTANCE: the invention is pertaining to the methods of production of the linear dimmers of a-methylsterene, which are used in the capacity of the modifiers in production of polymers. The method is exercised by dimerization of α- methylsterene in the presence of zeolite Y with the molar ratio of SiO2/Al2O3 = 6.2, with the stage of the ionic exchange of Na+ for Н+ - 40÷60 % containing 0.5÷2.0 mass % of copper (II). The catalyst amount makes 1÷4 mass %, the temperature of the reaction is 80÷100°С. The output of the dimmers compounds - 92.8÷94.8 % at conversion of the raw of 96.3÷99.4 %. The technical result of the invention is the raise of the selectivity of formation and output of the linear unsaturated dimmers of α- methylsterene.

EFFECT: the invention ensures the increased selectivity of formation and output of the linear unsaturated dimmers of α- methylsterene.

9 ex, 1 tbl

FIELD: industrial organic synthesis.

SUBSTANCE: process is accomplished by dimerization of styrene in presence of Y-type zeolite with molar ratio SiO2/Al203 = 6-7 in H-form and with ion exchange degree 94-97% undergone heat treatment and utilized in amount of 5-10 wt % based on styrene. Reaction is carried out at 80-120°C in pseudocumene solvent used in (1-2):1 proportion to styrene.

EFFECT: simplified process and increased yield of end product.

1 tbl, 9 ex

FIELD: industrial organic synthesis.

SUBSTANCE: invention provides process for producing linear α-methylstyrene dimers useful as polymer molecular mass regulator, varnish solvents, dielectric liquids, and base for production of synthetic lubricating oils. Process is accomplished through dimerization of α-methylstyrene in presence of 0.5-4% of BETA-type zeolite in H form at 20-40°C for 2 to 8 h.

EFFECT: increased selectivity and improved technology.

7 ex

FIELD: chemistry.

SUBSTANCE: method involves oligomerisation of α-methylstyrene, in the presence of a zeolite catalyst. The catalyst used is a zeolite series of pentasils Fe-ZSM-5 (1.8÷2.2% mass content of Fe3+) with molar ratio SiO2/(Al2O3+Ee2O3)=60, in H form in percentage mass content of 5÷10% α-methylstyrene. The reaction is carried out in a neutral medium (nitrogen, argon) at 80-120°C.

EFFECT: simplification of the process of obtaining linear dimmers of α-methylstyrene and increased efficiency of the process.

1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: present invention pertains to the method of producing linear styrene dimers (cis- and trans-1.3-diphenylbut-1-enes) through oligomerisation of styrene in the presence of zeolite catalyst in a solvent. The method is characterised by that, the catalyst used is ZSM-12 type zeolite in H-form, in quantity of 5-20 wt %. The reaction is carried out in nonane with ratio styrene:nonane = 1:2-4 (vol.) and 80-110°C temperature.

EFFECT: use of this method simplifies the method of producing linear styrene dimers.

1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: present invention pertains to the method of producing linear styrene dimers (cis- and trans-1.3-diphenylbut-1enes) through oligomerisation of styrene in the presence of zeolite catalyst. The method is characterised by that, the catalyst used in ZSM-12 type zeolite in H-form, in quantity of 10-20 wt %. The reaction is carried out at 95-110°C temperature.

EFFECT: use of this method makes easier the production of unsaturated linear styrene dimers.

5 ex, 1 tbl

FIELD: petrochemical processes.

SUBSTANCE: products obtained via oligomerization of propylene on phosphoric acid catalyst are subjected to rectification. Oligomerizate if first fed into first column from which top product containing unreacted hydrocarbon is withdrawn and bottom product is sent into second rectification column. Top product of the second column is constituted by propylene dimer fraction and bottom product of this column is sent into third rectification column. Top product of the third column is constituted by C7-C8-olefin fraction and bottom product of this column is constituted by propylene trimer and tetramer fraction, which is separated into desired products. A part of propylene dimer fraction obtained as top product of the second fraction is passed to reflux first column and to additionally cool bottom product of the first column used as feed for the second column and/or bottom product of the second column used as feed for the third column.

EFFECT: reduced power consumption and increased separation capacity of propylene oligomer isolation column.

2 cl, 1 dwg, 3 ex

FIELD: petrochemical industry; methods of production of the polyolefin bases of the synthetic oils.

SUBSTANCE: the invention is pertaining to the method of production of the polyolefin bases of the synthetic oils by cationic oligomerization of the olefinic raw and may be used in petrochemical industry. The developed method contains: the stages of preparation of the olefinic raw, preparation and batching in the reactor of the solutions and suspensions of the components of the catalytic system Al(0)-HCl-(CH3)3CCl (TBX), isomerization of alpha-olefins and oligomerizations of the highest olefins and their mixtures under action of the catalytic system Al (0)-HCl-TBX, extractions of the dead catalyst, separation of the oligomerizate for fractions and hydrogenation of the extracted fractions under action of the catalytic agent Pd (0.2 mass %)/Al2O3+NaOH. The invention ensures improvement of the stages of the developed method. For prevention of the corrosion activity of the products the method additionally contains the stage of dechlorination of the present in the oligomerizate chlorine-containing oligoolefins by the metallic aluminum, triethylaluminum, the alcoholic solutions of KOH or using the thermal dehydrochlorination of the chlorine-containing polyolefins at the presence or absence of KOH. For improvement of the technical-and-economic indexes of the method at the expense of the increase of the output of the target fractions of polyolefins with the kinematic viscosity of 2-8 centistoke at 100°C the method additionally contains the stage of the thermal depolymerization of the restrictedly consumable high-molecular polyolefins with the kinematic viscosity of 10-20 centistoke at 100°C into the target polyolefins with the kinematic viscosity of 2-8 centistoke at 100°C.

EFFECT: the invention ensures improvement of all the stages of the developed method.

1 cl, 15 tbl

FIELD: petrochemical industry; methods of production of the polyolefin bases of the synthetic oils.

SUBSTANCE: the invention is pertaining to the method of production of the polyolefin bases of the synthetic oils by cationic oligomerization of the olefinic raw and may be used in petrochemical industry. The developed method contains: the stages of preparation of the olefinic raw, preparation and batching in the reactor of the solutions and suspensions of the components of the catalytic system Al(0)-HCl-(CH3)3CCl (TBX), isomerization of alpha-olefins and oligomerizations of the highest olefins and their mixtures under action of the catalytic system Al (0)-HCl-TBX, extractions of the dead catalyst, separation of the oligomerizate for fractions and hydrogenation of the extracted fractions under action of the catalytic agent Pd (0.2 mass %)/Al2O3+NaOH. The invention ensures improvement of the stages of the developed method. For prevention of the corrosion activity of the products the method additionally contains the stage of dechlorination of the present in the oligomerizate chlorine-containing oligoolefins by the metallic aluminum, triethylaluminum, the alcoholic solutions of KOH or using the thermal dehydrochlorination of the chlorine-containing polyolefins at the presence or absence of KOH. For improvement of the technical-and-economic indexes of the method at the expense of the increase of the output of the target fractions of polyolefins with the kinematic viscosity of 2-8 centistoke at 100°C the method additionally contains the stage of the thermal depolymerization of the restrictedly consumable high-molecular polyolefins with the kinematic viscosity of 10-20 centistoke at 100°C into the target polyolefins with the kinematic viscosity of 2-8 centistoke at 100°C.

EFFECT: the invention ensures improvement of all the stages of the developed method.

1 cl, 15 tbl

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for preparing poly-alpha-olefin compound. Method involves combined oligomerization of a mixture containing about from 60 to 90 weight% of 1-dodecene and about from 10 to 40 weight% of 1-decene in the presence of BF3 as a catalyst and alcoholic promoter at temperature in the range about from 20°C to 60°C followed by distilling the mixture and hydrogenation to yield poly-alpha-olefin. Product has kinematic viscosity in the range about from 4 to 6 centistokes at 100°C, loss by Noak mass in the range about from 4% to 9%, viscosity index in the range about from 130 to 145 and fluidity loss temperature in the range about from -60°C to -50°C.

EFFECT: improved method of synthesis.

11 cl, 9 tbl, 14 ex

FIELD: organic chemistry.

SUBSTANCE: invention refers to technology and technique of gas hydrocarbons conversion to liquid hydrocarbons stable at normal conditions. The invention concerns method of gas hydrocarbons conversion to liquid hydrocarbons under electric discharges. Converted hydrocarbons are subject to partial discharges by dispersion in dielectric organic liquid in DC electric field. Process is carried out by means of gas hydrocarbons converter including coaxial internal and outer electrodes. Outer electrode comprises sequence elements every of which is dielectrically isolated sections one of which is under tension and another one is electrically neutral. Process is carried out section by section. In addition invention concerns device for gas hydrocarbons conversion to liquid hydrocarbons.

EFFECT: developed method of gas hydrocarbons conversion to liquid hydrocarbons under electric discharges.

3 cl, 2 dwg

FIELD: technological processes; chemistry.

SUBSTANCE: method involves reaction of raw material containing organic component with a catalyst composition. Processing method is selected out of alkylation, acylation, hydrotreatment, demetallisation, catalytic deparaffinisation, Fischer-Tropsch process and cracking. Catalyst composition includes mainly mesoporous silicon dioxide structure containing at least 97 vol.% of pores with size in the interval from ca. 15 Å to ca. 300 Å, and at least ca. 0.01 cm3/g of micropores. Mesoporous structure features at least one catalytically and/or chemically active heteroatom in amount of at least ca. 0.02 mass %, selected out of a group including Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Ru, Pt, W and their combinations. The catalyst composition radiograph has one 0.3° to ca. 3.5° peak at 2θ.

EFFECT: highly efficient method of organic compound processing in the presence of catalyst composition without zeolite.

20 cl, 31 ex, 17 tbl, 22 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining high-quality saturated base oil or a base oil component based on hydrocarbons. The method of obtaining a saturated hydrocarbon component for use as petrol, base oil, diesel components and/or solvent fractions involves oligomerisation of starting material which contains one or more components selected from a group comprising carboxylic acids having 4-38 carbon atoms, C4-C38 carboxylic acid esters and C1-C11 alcohols, C4-C38 carboxylic acid anhydrides and C4-C38 alcohols, in the presence of a cationic clay-based catalyst and deoxygenation. The starting material contains at least 50 wt % unsaturated and/or polyunsaturated compounds. The invention also relates to base oil obtained using the method given above, which is distinguished by that the base oil contains at least 90 wt % saturated hydrocarbons, 20-90 % mono-naphthenes, less than 3.0% polycyclic naphthenes, not more than 20 wt % linear parafins and at least 50 wt % saturated hydrocarbons have carbon number value interval not greater than 9 carbon atoms. The base oil is a biological product and has kinematic viscosity at 100°C ranging from 3 cS to 8 Cs.

EFFECT: obtaining saturated base oil which does not contain heteroatoms from biological starting material, which satisfies group III API requirements.

23 cl, 7 ex, 5 tbl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a product with the boiling range corresponding to a gasoline fraction from a stream of material from a mixture of light olefins containing ethylene and propylene, and a stream of aromatic material containing monocyclic aromatic compounds and containing 5-60 vol % benzene, involving: reaction of monocyclic aromatic compounds containing benzene in the stream of aromatic material with propylene from the stream of material from the mixture of olefins at the first step in vapour phase in the presence of a catalyst system containing a catalyst component which contains the MWW zeolite family in a fixed catalyst bed at temperature of 90-250°C and pressure of not higher than 7000 kPa isb; passing the stream coming from the first step to the second step, on which monocyclic aromatic compounds containing benzene in the stream of aromatic material react with ethylene from the stream of material from the mixture of olefins in vapour phase in the presence of a catalyst system containing a catalyst component which contains zeolite ZSM-5 with intermediate size pores in a fixed bed at temperature of the bed of 200-400°C and pressure of not higher than 7000 kPa isb, to form a product with boiling range corresponding to the gasoline fraction which contains alkyaromatic compounds.

EFFECT: use of present method enables recycling of light olefins into a product with boiling range corresponding to the gasoline fraction.

7 cl, 3 tbl, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a product with boiling range corresponding to a gasoline fraction from a stream of material from a mixture of light olefins containing ethylene and propylene, and a stream of liquid aromatic material containing benzene, involving: extraction of light olefins from a stream of gaseous olefins, containing ethylene and propylene, through counterflow dissolving at temperature of up to 120°C and excess pressure of up to 3500 kPa, in a stream of light aromatic hydrocarbons containing 5-60 wt % benzene to obtain a stream of extract containing extracted olefins in aromatic hydrocarbons, and a stream containing non-sorbed olefins; alkylation of aromatic hydrocarbons contained in the stream of extract which is extracted with olefins dissolved in the stream of aromatic hydrocarbons on a fixed bed solid alkylation catalyst based on molecular sieves, containing MWW zeolite, through reaction in liquid phase at temperature not higher than 250°C, weight ratio of aromatic hydrocarbons: olefins between 0.5:1 and 5:1 and space velocity of olefins between 0.5 and 5.0 to form a product with boiling range corresponding to the gasoline fraction which contains alkylaromatic hydrocarbons, including alkylbenzenes, feeding the stream containing non-sorbed olefins to the vapour-phase alkylation step on which olefins contained in the stream are brought into contact with an additional stream of light aromatic hydrocarbons containing 5-60 wt % benzene for alkylation of aromatic hydrocarbons in that stream with non-sorbed olefins in a catalytic reaction in vapour phase on a fixed catalyst bed which contains a ZSM-5 zeolite catalyst at temperature 200-325°C to obtain alkylated aromatic hydrocarbons, including alkylbenzenes, and fractionation of products from the liquid-phase alkylation step and vapour-phase alkylation step in a common distillation column to obtain a product with boiling range corresponding to the gasoline fraction containing alkylaromatic compounds.

EFFECT: present method enables to use light olefins - petroleum refining products coming from a catalytic cracking apparatus in a fluidised bed, for alkylation of benzene - a petroleum refining product, to obtain products with boiling range corresponding to the gasoline fraction.

9 cl, 5 tbl, 2 dwg

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