Method for production of liquefied hydrocarbon gases

FIELD: gas industry.

SUBSTANCE: invention relates to production of liquefied hydrocarbon gases, including adsorption purification of a broad fraction of light hydrocarbons from sulphur compounds and methanol. Method is characterized by that adsorption purification of liquefied hydrocarbon is implemented in multilayer adsorbers, in which each layer of adsorbent is series-selective in relation to a specific type of extracted impurities, temperature regeneration and subsequent cooling of adsorbents is carried out with a methane fraction, purified from impurities, similar to extracted impurities, and supplied on side, at final stage of cooling of adsorbents, adsorbers are blown with dry high-pressure nitrogen prior to feeding broad fraction of light hydrocarbons into adsorber with regenerated adsorbents, and purified broad fraction of light hydrocarbons undergoes distillation to produce liquefied narrow fractions of light hydrocarbons in system, at least two full rectification columns.

EFFECT: use of present method simplifies and provides universalisation of process diagram of production of liquefied hydrocarbon gases at stage of purification of liquefied gases independently from combination of extracted impurities, reduced power consumption of process and flexible variability of process with formation of a range of final product depending on marketing requirements.

14 cl, 1 tbl, 3 dwg

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of oil preparation including pre-separation, unit for dehydration and desalination, and final separation; under it the column with nozzle and reboiler is used as final separator.

EFFECT: crude oil cleaning of hydrogen sulphide, saturated steam pressure decreasing.

2 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: hydrocarbon material processing plant in the northern regions includes raw material and product tank farms, hydrocarbon material stabilising unit, atmospheric distillation unit for stable hydrocarbon material, gas fractionation unit for hydrocarbon gas released at atmospheric distillation unit and stabilising unit, unit for isomerisation, hydrofining and reforming benzene fraction received at atmospheric distillation unit with production of high-octane gasoline, hydrofining unit for diesel fuel fraction received at atmospheric distillation unit and its further dewaxing with output of either winter or arctic diesel fuel, unit of sanitary purification from acid gases with further disposal of effluent in absorption wells for injection into the formation, unit for compounding different flows of hydrocarbon raw material, unit for compounding commercial products such as residue of atmospheric distillation fractioning, ballast fractions of recycling units and a part of stabilised input raw material with production of transported merchantable oil and system of pipelines interconnecting process units and tank farms.

EFFECT: effective processing of hydrocarbon material in the northern regions, expanding range of commercial products.

13 cl, 1 dwg, 3 tbl

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to extraction of flows of hydrotreated hydrocarbons. Invention is referred to hydrotreatment method with extraction hydrotreated hydrocarbons that includes hydrotreating of hydrocarbon material in hydrotreating reactor with production of hydrotreating effluent; stripping in regard to cold flow of hydrotreating effluent, which is a part of the above hydrotreating effluent flow, in cold stripping column by means of stripping medium with production of cold stripped flow; stripping in regard to hot flow of hydrotreating effluent, which is a part of the above hydrotreating effluent flow, in hot stripping column by means of stripping medium with production of hot stripped flow and fractionating of cold and hot stripped flows in the column of final fractioning to receive product flows. Invention is also referred to plant for hydrotreatment with extraction hydrotreated hydrocarbons.

EFFECT: significant saving on operational and capital costs.

8 cl, 4 dwg, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of rectification of hydrocarbon mixes comprising the adding of methane containing gas to the hydrocarbon mix, heating and supply of the obtained mix into the supply section of the rectifying column. The methane containing gas is mixed with the hydrocarbon mix using the ejection method, while from the cube of the rectifying column the residue is separated a part of which, used as a hot flow, is mixed with the methane containing gas using the ejection method and the mix from the ejector is heated and supplied into the cube of the rectifying column.

EFFECT: improvement of the process of hydrocarbon mix rectification due to decrease of content of low-boiling components in diesel fraction.

1 tbl, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: oil treatment method includes oil separation into fractions in the rectification tower, extraction of natural gas liquids (NGL), cooling of NGL up to temperature sufficient for condensation, delivery of condensed NGL to buffer-separating container, pumping out of a part of NGL to the top part of the rectification tower and excessive part to the warehouse. NGL vapours are taken from the top of the rectification tower, NGL vapours are cooled down in heat exchanger until liquid-gas mixture is formed, then the liquid-gas mixture is cooled in the other heat exchanger, further the liquid-gas mixture is cooled down in air cooler until NGL are transferred to liquid state, thereafter NGL are subject to separation in reflux tank and in centrifugal vertical gas separator, wherein from NGL water and light hydrocarbon gases are separated.

EFFECT: increased output of NGL due to reduced losses at pre-treatment.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: oil sludge processing facility comprises unit for oil sludge separating to oil concentrate, oily water and mechanical admixtures, unit of oil concentrate after-cleaning, water cleaning unit, mechanical admixtures processing unit, unit for oil concentrate thermal conversion including equipment for fractionation, unit for stabilisation by hydrogenation and stabilisation of light fractions, and unit for gas cleaning of hydrogen sulphide. Unit of oil concentrate after-cleaning is connected with the unit for oil concentrate thermal conversion by the line of circulating thinner, and with unit for stabilisation by hydrogenation and stabilisation of light fractions by stabilisation steam line.

EFFECT: increased quality of commercial products, reduced environment pollution.

1 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to chemical, petrochemical and oil-processing industry. The invention relates to the method of evaporation of multicomponent mixes according to which the mix is heated at high pressure, and then triple evaporation is performed at pressure decrease, the obtained vapours are mixed and removed from the system, and liquid is removed after the third stage of evaporation. At first the evaporation is performed in two stages with step pressure decrease, then at the third stage the evaporation is performed at the expense of mixing of vapours, obtained at the first stage, and the liquid, obtained at the second stage; the vapours obtained at the third stage are returned to the second stage where they interact with liquid and are removed from the system. The invention also relates to the method of supply of hot flow into a rectifying column according to which the method of evaporation of multicomponent mixes is used.

EFFECT: increase of stripping percentage, increase of productivity, and decrease of energy consumption.

3 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention concerns a method for producing high-density rocketry hydrocarbon fuel of Vankor Field oil by recovering a fraction distillating at a boiling point of 120-270C to produce the fuel.

EFFECT: producing the unprofitable high-density rocketry hydrocarbon fuel.

4 ex

Oil refining method // 2548040

FIELD: oil-and-gas industry.

SUBSTANCE: method comprises the passing heated raw materials through heat exchangers and a furnace into a complex topping unit fitted with lateral stripping sections with supply to the bottom of sections and a complex topping unit of heated flows, withdrawal from the top of the complex topping unit of light petrol fraction and its supply after heating into a stabiliser tower with release of gas and stable light petrol fraction, side streams through stripping sections - heavy petrol, kerosene and diesel fractions and from the bottom of the complex topping unit of fuel oil, supply of fuel oil after heating in the furnace into the vacuum column with lateral withdrawal of diesel fraction, light vacuum gasoil using a circulating irrigation and from the bottom of the vacuum column - tar, using the circulating irrigation in the complex topping unit and supply of the heated flow into the bottom of the vacuum column, meanwhile the raw materials after heating in heat exchangers are separated into two flows, the flow, larger by quantity, is heated in the furnace and is supplied to the feeding zone of the complex topping unit, and smaller without heating is supplied between the supply of the bigger flow and withdrawal of diesel fraction, the complex topping unit contains two circulating irrigations, the heated flows are supplied to the bottom of stripping sections which are vapours after evaporation of light hydrocarbons from the residues of the stripping sections, into the bottom of the complex topping unit - heated gas from the stabilisation column where the reflux is selected, from the first plate of the vacuum column located above the supply of raw materials the heavy vacuum gasoil is withdrawn, it is used for heating of a part of diesel fraction of the vacuum column and supplied for mixing with fuel oil before its heating in the furnace, the diesel fraction heated by heavy vacuum gasoil is additionally heated in the furnace and supplied as a heated flow into the bottom of the vacuum column, lateral withdrawal of diesel fraction of the vacuum column is taken as a top circulating irrigation, and the light vacuum gasoil - as a lower one.

EFFECT: invention allows to lower energy consumption and to avoid formation of drains of acidic water, to increase withdrawal of vacuum gasoil and to decrease the level of decomposition of fuel oil in the furnace.

1 tbl, 1 dwg

Oil refining method // 2548038

FIELD: oil-and-gas industry.

SUBSTANCE: method comprises the passing of heated raw materials through heat exchangers and a furnace into a complex topping unit fitted with lateral stripping sections with supply into the bottom of sections and a complex topping unit of heated flows, withdrawal from the top of the complex topping unit of light petrol fraction and its supply after heating into a stabiliser tower with release of gas and stable light petrol fraction, side streams through stripping sections - heavy petrol, kerosene and diesel fractions and from the bottom of the complex topping unit of fuel oil, supply of fuel oil after heating in the furnace into the vacuum column with lateral withdrawal of diesel fraction, light vacuum gasoil using a circulating irrigation and from the bottom of the vacuum column - tar, using the circulating irrigation in the complex topping unit and supply of the heated flow into the bottom of the vacuum column, meanwhile the raw materials after heating in heat exchangers are separated into two flows, the flow, larger by quantity, is heated in the furnace and is supplied to the feeding zone of the complex topping unit, and smaller without heating is supplied between the supply of the larger flow and withdrawal of diesel fraction, the complex topping unit contains two circulating irrigations, the heated flows are supplied to the bottom of stripping sections which are vapours after evaporation of light hydrocarbons from the residues of the stripping sections, into the bottom of the complex topping unit - heated gas from the stabilisation column where the reflux is withdrawn, from the fuel oil before its heating in the furnace the light hydrocarbons are evaporated at the pressure lower than the pressure in the complex topping unit and they are supplied as heated flow into the bottom of the vacuum column, the heavy vacuum gasoil is withdrawn from the first plate of the vacuum column located above the supply of raw materials into the vacuum column and supplied for mixing with fuel oil liquid phase, after that the obtained after mixing flow is heated in the furnace and is supplied into the vacuum column as a raw material, the lateral withdrawal of diesel fraction of the vacuum column is taken as a top circulating irrigation, and the light vacuum gasoil - as a lower one.

EFFECT: invention allows to lower energy consumption and to avoid formation of drains of acidic water, to increase withdrawal of vacuum gasoil and to decrease the level of decomposition of fuel oil in the furnace.

1 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of regenerating a spent adsorbent used for desulphurisation of liquid hydrocarbon material by washing with an organic solvent selected from: dimethyl formamide, acetonitrile, or a mixture thereof, or a mixture of one or two solvents selected from the group with an aromatic solvent: benzene, toluene, xylene, or a mixture thereof, or any of said solvents or mixtures of solvents combined with water.

EFFECT: high efficiency of regenerating a spent adsorbent.

8 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to method of removal of spent regenerating agent from regenerated drying device in system for isomerisation of flow of hydrocarbons, rich in C4 hydrocarbons and/or rich in at least one of C5 and C6 hydrocarbons. Claimed method includes: a) application of at least one valve and at least one of regulating valve and restricting hole for extrusion of spent regenerating agent from newly regenerated drying device in form of ascending flow to low-pressure device until pressure in newly regenerated drying device reaches value from 14 kPag to 69 kPag (2-10 pounds per sq. inch), with spent regenerating agent being selected from the group, consisting of isomerised C4 hydrocarbon product, isomerised C5-C6 hydrocarbon product, and gas; b) extrusion of spent regenerating agent from at least part of cross-over pipeline, located between said newly regenerated drying device and second drying device, with application of at least one valve and at least one of said regulating valve and said restricting hole; and c) functioning of both said newly regenerated drying device and said second drying device in successive mode for a time interval. Invention also relates to device.

EFFECT: application of claimed invention makes it possible to reduce degree of impact produced by gas drying device on reservoirs located downstream of flow.

10 cl, 1 ex, 4 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to method of oxidised sulphur chemicals removal from hydrocarbons flow, containing compounds with oxidises sulphur, in which into hydrocarbons flow, containing compounds inject contact with absorber, that absorbs selectively compounds with oxidises sulphur out of the hydrocarbons flow with absorbent generation, consisting of compounds with oxidises sulphur. Saturated absorber, consisting of compounds with oxidises sulphur and absorbent, with compounds with oxidises sulphur reduced content. Regenerated absorbent after that used for removal of additional volume of compounds with oxidises sulphur.

EFFECT: production of environment friendly transport fuels with very low sulphur content.

10 cl, 1 dwg

FIELD: chemistry, technological processes.

SUBSTANCE: composition for hydrocarbon raw material desulfurisation contains metal oxide and activator, in which part of activator is present in form of activator with reduced valency. Method of obtaining composition includes mixing of liquid, zinc-containing compound, material containing silicon oxide, aluminium oxide, drying, burning of dried mixture, introduction of activator, bringing activated mixture into contact with acid, selected from group, including citric acid, tartaric acid and their combinations, with obtaining mixture that has contacted, drying and burning, reduction of burned mixture by means of reducing agent with obtaining of composition, which contains activator with reduced valency, and isolation of said composition.

EFFECT: composition is efficient for application in desulfurisation zone for removal of sulfur from hydrocarbon flow, obtaining desulfurised cracking-benzene or Diesel fuel.

36 cl, 1 dwg, 11 ex

The invention relates to a method of processing waste absorber Nickel-based

FIELD: chemistry.

SUBSTANCE: invention concerns a method for the adsorption refining of oil stock to produce capacitor oil. The oil stock is de-waxed distillate fraction recovered from waxy sulphur crude oils boiling out at temperature ranging 300-400C. The oil stock is passed through an silica-alumina adsorbent. What is used is wide-pore uniformly porous silica-alumina having a pore space with a radius of 25-35 E, of 0.28-0.29 cm3/g, a bulk density of 0.48-0.55 g/cm3, containing at oxide basis (wt %): SiO2 - 96.15-94.65, Al2O3 - 3.5-5.

EFFECT: producing the high-quality high-yield oil, cutting the costs.

5 cl, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing substantially linear paraffins from raw material which contains normal hydrocarbons, weakly branched hydrocarbons, highly branched hydrocarbons and contaminant components. The method includes: bringing said raw material into contact with an ionic liquid stream and extracting contaminant components to obtain a purified hydrocarbon stream; cleaning the purified hydrocarbon stream using a solvent stream to extract any ionic liquid from the purified hydrocarbon stream; treating the purified hydrocarbon stream in mild hydrofining conditions to remove the remaining portion of contaminant components; selective adsorption of normal hydrocarbons and weakly branched hydrocarbons from the purified hydrocarbon stream using a molecular sieve to separate normal hydrocarbons and weakly branched hydrocarbons from highly branched hydrocarbons; extracting the normal hydrocarbons and weakly branched hydrocarbons from the molecular sieve using a desorbent, wherein adsorption/desorption is carried out in a system which is a system with a simulated moving bed; and separating the normal hydrocarbons and weakly branched hydrocarbons from the desorbent to obtain substantially linear paraffins.

EFFECT: use of the present method enables to avoid hydrofining in rigid conditions.

8 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to method for removal of organic sulphur compounds from liquid hydrocarbon fuel by means of adsorbing agents, and for this purpose alumino-nickel (or cobalt-)-molybdenum catalyst of hydrofining and/or synthetic zeolites of NaX or ZSM type and/or materials containing aluminium oxides and/or zinc and copper oxides are used at atmosphere pressure; the method differs by the fact that fuel is passed through several layers of adsorbing agents, each of them operating in a certain range of temperature, when the biggest efficiency in removal of organic sulphur compounds is reached for this adsorbing agent.

EFFECT: effective removal of organic sulphur compounds from liquid hydrocarbon fuel.

5 cl, 18 tbl, 18 ex

FIELD: chemistry.

SUBSTANCE: described is a method of separating para-xylene from a mixture containing at least one other C8 alkylaromatic hydrocarbon, which includes contacting, under adsorption conditions, the mixture with a binder-free adsorbent containing a first portion of zeolite X and a second portion of zeolite X; wherein said first portion of zeolite X has average crystallite size of 500 nm to 1.5 mcm, and said second portion of zeolite X has average crystallite size smaller than 500 nm or said second portion of zeolite X has average crystallite size greater than 1.8 mcm, wherein the combined first and second portions of zeolite X have average crystallite size smaller than 1.8 mcm, in order to adsorb para-xylene present in the adsorbed phase, preferably compared with at least one other C8 alkylaromatic hydrocarbon present in the non-adsorbed phase; eliminating the non-adsorbed phase from contact with the adsorbent in order to obtain a raffinate stream containing said at least one other C8 alkylaromatic hydrocarbon; and desorbing para-xylene of the adsorbed phase from the adsorbent to obtain an extract stream containing para-xylene; wherein the binder-free adsorbent does not contain amorphous material or contains amorphous in amount of less than 2 wt % in accordance with the defined X-ray diffraction method, wherein the first cycle of said method is less than 34 minutes.

EFFECT: using an adsorbent with improved capacity and mass-transfer, improved efficiency of the method at low temperature, short duration of the adsorptive separation cycle when operating in simulated moving bed mode.

15 cl, 9 dwg, 8 ex

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the method for removal of organic sulphur compounds from liquid hydrocarbon fuel by means of absorbers when fuel at a temperature within the range from 0 up to 100C and atmospheric pressure is passed through a still absorber with a relative feed space velocity in the range of values of 0.1-10 h-1, at that an alumino-http://alk.pp.ru:8080/c/m.exe?t=2914656_1_2&s1=%EA%EE%E1%E0%EB%FC%F2-%EC%EE%EB%E8%E1%E4%E5%ED%EE%E2%FB%E5 catalyst of IK-GO-1 brand or alumino-nickel-molybdenum catalyst of GO-70 brand and/or synthetic zeolites of NaX or ZSM type and/or materials containing aluminium oxides or zinc and copper oxides are used as the absorber. The absorber is used independently or in combination with other several materials placed in layers or in one mixed layer.

EFFECT: effective removal of organic sulphur compounds.

4 cl, 9 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: invention is related to the method of paraxylene separation from the mixture containing at least one different alkylaromatic hydrocarbon C8. At that the method includes contact in absorption conditions of the above mixture and adsorbent without binding agent containing zeolite X and having water content from 3% up to 5.5% by weight for absorption of paraxylene which is transferred to absorbed phase mainly in regard to at least one different alkylaromatic hydrocarbon C8 present in non-absorbent phase; washing of non-absorbent phase from the contact area with adsorbent with receipt of raffinate flow containing at least one different alkylaromatic hydrocarbon C8; desorption of paraxylene in absorbed phase from absorbent with receipt of extract flow containing paraxylene; where absorbent without binding agent does not contain amorphous material or contains amorphous material in quantity less than about 2 % by weight and this amount is defined by X-ray diffraction. This invention is related for adsorbent purposed for use in the above method.

EFFECT: invention allows increasing of paraxylene output.

10 cl, 10 ex, 2 tbl, 9 dwg

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