Processing method of heavy vacuum gasoil

FIELD: oil and gas industry.

SUBSTANCE: residual oil vacuum distillation product, the heavy vacuum gasoil, is subjected to cryolysis, i.e. freezing, at the certain process conditions with subsequent distillation of light fuel fractions. The processing method of vacuum gasoil is included in its physical separation into fractions, where in order to increase the most valuable light fuel fractions yield, the fuel oil vacuum distillation product -vacuum gasoil is subjected to cryolysis at the temperature of not higher than -35C for at least 20 hours with the preliminary introduction in it the donor additive (water) at least 0.5% to the gasoil weight. The invention is the alternative to the catalytic cracking process, since the process yield of the light fuel fractions at the heavy vacuum gasoil cryolysis treatment is not less than the yield, obtained by catalytic cracking.

EFFECT: complete bleeding of the valuable light fuel fractions from the oil.

4 ex, 1 tbl

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: method involves sampling and preparation of sample with thermostatting at temperature of 50-70C with simultaneous extrusion of sulphurated hydrogen and light mercaptans with inert gas or air to in-series located absorbing solutions; at that, as absorbing solution for determining sulphurated hydrogen, there used is sodium carbonate solution, and as absorbing solution for determining light mercaptans there used is sodium hydrate solution, quantitative estimation of sulphurated hydrogen and light mercaptans by method of iodimetric titration. At that, before mixture of vapours of light hydrocarbons with sulphurated hydrogen and light mercaptans, which is extruded from the sample with air or inert gas, enters in-series located absorbing solutions, it is cooled to the temperature of more than 15C to 20C.

EFFECT: improving accuracy and reliability, and speeding-up the analysis.

5 ex, 3 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to method of increasing of quality of heavy or/and extra-heavy hydrocarbon, and mainly for release and increasing of hydrocarbon quality in wastes of drilling fluids. Invention describes method of increasing heavy hydrocarbon grade, which includes the following stages: use of heavy hydrocarbon; contacting of heavy hydrocarbon with solvent in conditions of grade increasing, due to which first product is obtained, which includes mixture of hydrocarbon of increased grade and solvent, and second product which includes asphaltenic waste, water and solvent, where conditions of grade increasing include gauge pressure in range from approximately 100 to approximately 350 pounds/square inch and temperature in range from approximately 30 to approximately 100C; and supply of first product into separator for separation of hydrocarbon of increased grade from solvent.

EFFECT: invention also relates to system for increasing grade of heavy hydrocarbon.

16 cl, 4 ex, 6 tbl, 2 dwg

FIELD: petroleum processing.

SUBSTANCE: invention relates to processes of dehydration of watered petroleum products, which are formed during preparation for repairs or for change of loads in oil-loading and oil-transportation equipment. Petroleum product is preliminarily heated to temperature above water boiling temperature and applied by thin layer onto mobile surface moving it forcibly. Evaporation is effected using heat which product obtains in superheating step. Removal of product from mobile surface is also effected forcibly, after which product, if necessary, is intensively heated and sent to next evaporation step or product is discharged if its moisture content does not exceed allowed values. Dehydration process is accomplished in one, two, or more cycles, each comprising following steps: superheating, applying product onto mobile surface, spreading product across mobile surface in thin layer, and forcibly removing product from the surface. Distilled off vapors are condensed, condensate is collected and processed by a known way, while non-condensed vapors are heated and returned to distillation zone.

EFFECT: enabled dehydration of high-viscosity petroleum products (mazut, bitumen) with any initial moisture while preventing solidification thereof and "arching" during processing, which is thereby shortened as compared to conventional procedures.

5 cl, 1 dwg

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: machine-building, automotive, and oil refining industries, rail transport, and agricultural sector.

SUBSTANCE: proposed installation has heat-insulating evaporator incorporating spent motor oil feeders and dewatered motor oil outlet pipe; condenser connected to evaporator and to vacuum pump; heater; tandem-connected transfer pump and heater communicating with spent motor oil feeder; installation also has tank holding original spent motor oil whose space communicates with suction pipe of gear-type transfer pump and through heated barometer tube, with dewatered motor oil outlet pipe; heater is made in the form of steam jacket of original spent motor oil tank; reheater is made in the form of tubular heat exchanger whose tube space communicates with delivery pipe of gear-type pump and tube-to-tube space, with heating steam supply; evaporator is made in the form of horizontal heated cylinder accommodating at its ends spent motor oil feeders in the form of nozzles with filtering barriers at inlet; disposed in central part of evaporator space against nozzles are oil jet deflectors whose concave surface faces nozzles; bottom part of evaporator is provided with dewatered motor oil collector provided with its outlet pipe and heated tube disposed between jet deflectors; upper end of heated tube carries oil spray trap and its bottom end is joined to condenser case enclosed by cooling jacket and accommodating cooling coil that passes through its interior along condenser axis cooling medium discharge pipe; condensed water outlet pipe running from condenser is connected to this water collecting tank communicating with vacuum pump; installation is also provided with additional heat-insulated and heated evaporator, condenser, heater, reheater, gear-type and vacuum pumps, and heated barometer tube, which are physically identical to main evaporator, condenser, heater, reheater, gear-type and vacuum pumps, heated barometer tube, and tank for collecting fuel-containing dewatered motor oil that communicates with original spent motor oil pipeline connected to delivery pipe of main gear-type pump; additional heater is made in the form of steam jacket of fuel-containing dewatered motor oil tank whose space communicates with suction pipe of additional gear-type pump; tube space of additional heater communicates with delivery pipe of additional gear-type pump and with nozzles of additional evaporator whose collector is designed to accumulate clean motor oil; additional heated barometer tube is connected to pipe delivering clean motor oil from collector and to fuel-containing dewatered oil tank; pipe designed for discharging condensed fuel from additional condenser communicates with oil collecting tank communicating with additional vacuum pump.

EFFECT: enhanced degree of cleaning spent motor oil from water and fuel; enhanced safety and economic efficiency of process.

1 cl, 3 dwg

The invention relates to a method of reducing the amount of organic acids in the crude oil

The invention relates to the field of primary oil and can be used for its purification from mechanical impurities

The invention relates to the processing of oil sludge and can be applied in the oil industry to obtain a variety of composite materials

The invention relates to reducing the viscosity of hydrocarbon by heating

The invention relates to the decomposition of naphthenic acids in crude oil

FIELD: machine-building, automotive, and oil refining industries, rail transport, and agricultural sector.

SUBSTANCE: proposed installation has heat-insulating evaporator incorporating spent motor oil feeders and dewatered motor oil outlet pipe; condenser connected to evaporator and to vacuum pump; heater; tandem-connected transfer pump and heater communicating with spent motor oil feeder; installation also has tank holding original spent motor oil whose space communicates with suction pipe of gear-type transfer pump and through heated barometer tube, with dewatered motor oil outlet pipe; heater is made in the form of steam jacket of original spent motor oil tank; reheater is made in the form of tubular heat exchanger whose tube space communicates with delivery pipe of gear-type pump and tube-to-tube space, with heating steam supply; evaporator is made in the form of horizontal heated cylinder accommodating at its ends spent motor oil feeders in the form of nozzles with filtering barriers at inlet; disposed in central part of evaporator space against nozzles are oil jet deflectors whose concave surface faces nozzles; bottom part of evaporator is provided with dewatered motor oil collector provided with its outlet pipe and heated tube disposed between jet deflectors; upper end of heated tube carries oil spray trap and its bottom end is joined to condenser case enclosed by cooling jacket and accommodating cooling coil that passes through its interior along condenser axis cooling medium discharge pipe; condensed water outlet pipe running from condenser is connected to this water collecting tank communicating with vacuum pump; installation is also provided with additional heat-insulated and heated evaporator, condenser, heater, reheater, gear-type and vacuum pumps, and heated barometer tube, which are physically identical to main evaporator, condenser, heater, reheater, gear-type and vacuum pumps, heated barometer tube, and tank for collecting fuel-containing dewatered motor oil that communicates with original spent motor oil pipeline connected to delivery pipe of main gear-type pump; additional heater is made in the form of steam jacket of fuel-containing dewatered motor oil tank whose space communicates with suction pipe of additional gear-type pump; tube space of additional heater communicates with delivery pipe of additional gear-type pump and with nozzles of additional evaporator whose collector is designed to accumulate clean motor oil; additional heated barometer tube is connected to pipe delivering clean motor oil from collector and to fuel-containing dewatered oil tank; pipe designed for discharging condensed fuel from additional condenser communicates with oil collecting tank communicating with additional vacuum pump.

EFFECT: enhanced degree of cleaning spent motor oil from water and fuel; enhanced safety and economic efficiency of process.

1 cl, 3 dwg

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: petroleum processing.

SUBSTANCE: invention relates to processes of dehydration of watered petroleum products, which are formed during preparation for repairs or for change of loads in oil-loading and oil-transportation equipment. Petroleum product is preliminarily heated to temperature above water boiling temperature and applied by thin layer onto mobile surface moving it forcibly. Evaporation is effected using heat which product obtains in superheating step. Removal of product from mobile surface is also effected forcibly, after which product, if necessary, is intensively heated and sent to next evaporation step or product is discharged if its moisture content does not exceed allowed values. Dehydration process is accomplished in one, two, or more cycles, each comprising following steps: superheating, applying product onto mobile surface, spreading product across mobile surface in thin layer, and forcibly removing product from the surface. Distilled off vapors are condensed, condensate is collected and processed by a known way, while non-condensed vapors are heated and returned to distillation zone.

EFFECT: enabled dehydration of high-viscosity petroleum products (mazut, bitumen) with any initial moisture while preventing solidification thereof and "arching" during processing, which is thereby shortened as compared to conventional procedures.

5 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to method of increasing of quality of heavy or/and extra-heavy hydrocarbon, and mainly for release and increasing of hydrocarbon quality in wastes of drilling fluids. Invention describes method of increasing heavy hydrocarbon grade, which includes the following stages: use of heavy hydrocarbon; contacting of heavy hydrocarbon with solvent in conditions of grade increasing, due to which first product is obtained, which includes mixture of hydrocarbon of increased grade and solvent, and second product which includes asphaltenic waste, water and solvent, where conditions of grade increasing include gauge pressure in range from approximately 100 to approximately 350 pounds/square inch and temperature in range from approximately 30 to approximately 100C; and supply of first product into separator for separation of hydrocarbon of increased grade from solvent.

EFFECT: invention also relates to system for increasing grade of heavy hydrocarbon.

16 cl, 4 ex, 6 tbl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves sampling and preparation of sample with thermostatting at temperature of 50-70C with simultaneous extrusion of sulphurated hydrogen and light mercaptans with inert gas or air to in-series located absorbing solutions; at that, as absorbing solution for determining sulphurated hydrogen, there used is sodium carbonate solution, and as absorbing solution for determining light mercaptans there used is sodium hydrate solution, quantitative estimation of sulphurated hydrogen and light mercaptans by method of iodimetric titration. At that, before mixture of vapours of light hydrocarbons with sulphurated hydrogen and light mercaptans, which is extruded from the sample with air or inert gas, enters in-series located absorbing solutions, it is cooled to the temperature of more than 15C to 20C.

EFFECT: improving accuracy and reliability, and speeding-up the analysis.

5 ex, 3 tbl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: oil is treated by heating in fee heat exchanger with further division of thermally treated oil flow into two parts, one part is sent to thermal cracking while the other is mixed with thermal cracking products, then the received raw mixture is cooled down up to temperature fit for transportation through a pipeline. Thermal cracking products are subject to division into gas and vapour-liquid phase and liquid phase in an evaporator, at that liquid phase from the evaporator is fed as heat medium to heat exchangers with further division of the cooled down liquid phase into two parts, one part is fed for quenching of thermal cracking products before delivery to the evaporator while the other one is fed for mixing with thermally treated part of oil, whereat gas and vapour-liquid phase of thermal cracking products is cooled and sent to division at a gas separator into gas used as fuel gas in the thermal cracking oven and distillate fed for mixing with the received raw mixture to the pipeline.

EFFECT: reduced oil viscosity with simultaneous reduction in power consumption by operations on high-viscosity oil treatment for transportation through a pipeline.

8 cl, 1 dwg, 1 ex

FIELD: oil industry.

SUBSTANCE: invention relates to method of operation of a device for treatment of crude oil containing a treatment section and an evaporation section connected to each other and an evaporative valve. Method involves the following steps: water containing crude oil is fed into the said treatment section; in this section, water is separated from crude oil containing water; there is obtained partially dehydrated crude oil containing 5 or more volumetric % of water; the partially dehydrated crude oil is ducted through the specified pipe and evaporative valve into the specified evaporation section of the said device; partially dehydrated crude oil is heated upstream in relation to the evaporation section and downstream in relation to the evaporative valve by means of heat exchange with the above mentioned water separated from crude oil in the treatment; thus, the water contained in partially dehydrated crude oil is heated to a temperature above the water boiling point and there is obtained dehydrated crude oil from the specified evaporation section. Invention also relates to a device for implementation of the specified method.

EFFECT: use of this invention makes it possible to reduce the size of the treatment section.

12 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: present invention relates to a method for reducing the paraffin content in mineral oil compositions, wherein the composition of mineral oils is provided with a dewaxing aid, which is a copolymer mixture obtained in a single polymerisation step, wherein the copolymers differ in the composition of the repeat units; it is cooled to form a paraffin precipitate and the paraffin precipitate is at least partly removed, where a copolymer mixture comprising at least four copolymers is used; the said four polymers have repeated units which are derived from alkylmethacrylates having 16-18 carbon atoms in the alkyl radical and repeat units that are derived from alkylacrylates with 18-22 carbon atoms in the alkyl radical, wherein the said repeat units are derived from at least one acrylate and one methacrylate. Present invention also relates to a dewaxing aid for reducing the paraffin content in mineral oil compositions, which includes is a copolymer mixture obtained in a single polymerisation step, wherein the copolymers differ in the composition of the repeat units; where the copolymer mixture is a mixture of at leat four polymers, which have repeated units which are derived from alkylmethacrylates having 16-18 carbon atoms in the alkyl radical and repeat units that are derived from alkylacrylates with 18-22 carbon atoms in the alkyl radical, wherein the said repeat units are derived from at least one acrylate and one methacrylate.

EFFECT: reduce the content of paraffins in mineral oil compositions.

9 cl, 5 tbl, 10 ex

FIELD: oil industry.

SUBSTANCE: invention relates to a method of controlling process and list of produced oil products during oil refining. Method comprises the most complete physical separation into fractions and is characterised by that to increase output of most valuable light fractions, oil is subjected to cryolysis at temperature not higher than -15 C for not less than 20 hours with preliminary addition of a donor additive (water) in amount of not less than 1 % at different processing steps: before fractionation, instead of vacuum distillation at oil fields, where simultaneously with increase in content of fuel fractions in oil fractions there is its dewatering and desalination (partial or complete), as well as in various combinations of processing steps, for example before fractionation and instead of vacuum distillation or at oil fields and instead of vacuum distillation.

EFFECT: use of disclosed method makes it possible to increase number of extracted fuel fractions.

1 cl, 1 dwg, 5 tbl

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to a method of high viscous oil preparation for pumping through a pipeline, the method can be used in oil industry. The method comprises oil heat treatment by heating in heat exchangers and thermal cracking oven, further separation of the thermal cracking products to gas/vapour/liquid and liquid phases in an evaporator, the later phase use as heating medium in the heat exchangers with further separation of the cooled liquid phase to two parts, one part is delivered for quenching cooling of the thermal cracking products prior to delivery to the evaporator, and another part after additional cooling is used as oil component pumped in the pipeline, further separation of gas/vapour/liquid phase of the thermal cracking products in a gas separator to hydrocarbon gas used as fuel of the thermal cracking oven and distillate. Wherein the distillate is subjected to additional separation to the hydrocarbon gas and stable distillate in a stabilization column having a nozzle, the hydrocarbon gas from the stabilization column is mixed with the hydrocarbon gas from the gas separator, and stable distillate after heating in heater is partially used as hot jet delivered to the bottom part of the stabilization column, and partially after cooling in cooler is used as live reflux delivered to the top part of the stabilization column, and balance quantity of the stable distillate is mixed with the cooled liquid phase of the evaporator and delivered for transfer.

EFFECT: method of high viscous oil preparation reducing losses during transport and storage by its physical stability increasing.

5 cl, 1 dwg, 2 tbl

FIELD: oil and gas industry.

SUBSTANCE: method of the oil wastes recycling includes wastes supply to the reactor heated by the flue gases at high temperature. The high temperature flue gases for the reactor heating are obtained by the joint combustion of the generator gas obtained by gasification of the solid residues from the reactor, and liquid hydrocarbons and water subjected to the cavitation action by ultrasound application with frequency within range 20-200 kHz and with oscillation strength 1.0-5.0 W/cm2. Part of the produced high temperature gases are mixed with water steam at weight ratio (0.10.5):1, and is also used for the reactor heating. Cooling of the mixture of flue gases, liquid hydrocarbons and water steam is performed in the condenser to 20-100C by heat exchange with the heating medium, that is further used to dry the input wastes, at that partial separation of the liquid hydrocarbons and water is performed, and their weight ratio is determined in range 1:(1.04.0).

EFFECT: invention reduces power consumption, increases quantitative output and quality of the waste recycling products, reduces harmful discharges to the environment.

2 cl, 1 dwg, 2 ex

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