Method of separating mixtures with high content of liquid-phase product

FIELD: technological processes.

SUBSTANCE: method of separating mixtures with high content of liquid-phase product using a tray column with horizontally mounted curtains and vertically positioned tray drain devices comprises injecting the raw material to the column by one or two streams, forming the raw material of two fluid streams in the column below the water level, forming upwardly flowing vapour (gas) stream at the bottom of the column by injecting a stripping agent and (or) by heating and evaporating of part of the fluid streams, alternating contact of the fluid streams with the upwardly flowing vapour (gas) stream of the column at the curtains of only their group of trays, transporting of fluid streams to the column bottom by avoiding the tray groups of another fluid stream, withdrawal of separation products from the column in liquid and vapour (gas) phases, wherein the alternating contact of the fluid streams with the upwardly flowing vapour (gas) stream is carried out at the curtains of adjacent column trays to produce liquid-vapour (gas) system with high monodispersity degree and highly-developed surface of phase connecting using the curtains with finely perforatedirreversible elements, transporting of fluid streams to the column bottom is carried out only by tray drain devices.

EFFECT: increased fluid-carrying capacity and separating capacity of column lower than the level of raw material input.

6 cl, 3 dwg, 3 ex

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to the method including input of a reaction mixture passed through a furnace and reactor for thermal cracking, upon cooling of the reaction mixture by quench to a fractionating column and output of vapours from the top of the fractionating column, delivery of the above vapours upon cooling to a reflux drum with output of gas from the reflux drum top and of a non-stable gasoline fraction from the reflux drum bottom and delivery of the above fraction as live reflux for the fractionating column, with side-streaming of a diesel oil cut through a stripping section and vapours of the stripping section from the fractionating column back to the same column and output of the residue from the fractionating column bottom with water vapour delivery to the bottom of the fractionating column and stripping section. At that from the reflux drum upon heating in the heat exchanger by liquid from the stripping column boiler a balancing part of the non-stable gasoline fraction is delivered to the top of the stripping column while to its bottom vapour is entered from the boiler top, from upper trays of the fractionating column side stream of the gasoline fraction is outputted and delivered to the top of the stripping column and from its boiler bottom a stable gasoline fraction is outputted, vapours from the stripping column top mixed up with the gas from the reflux drum are delivered to the absorber bottom, while to the absorber top an absorbing agent - the cooled diesel cut - is delivered upon output from the delivery zone to the stripping section of the fractionating column, gas is outputted from the absorber top, at that one part of the absorber residue is used as quench for the reaction mixture while the other part is delivered to the fractionating column upstream the extraction zone of the diesel cut as the upper circulating reflux. The column also features the lower circulating reflux.

EFFECT: increased extraction of the diesel cut, improved quality of gas, gasoline fraction and residue of the fractionating column, reduced capital costs.

1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: separation of products of a hydrocracking reaction is realised in three stages, at the first stage a low-pressure gas, liquefied hydrocarbon gases, a light gasoline fraction and a weighted product of hydrocracking are obtained, with the light gasoline fraction being obtained in the first atmospheric column as a side run, at the second stage obtained are: heavy gasoline, kerosene, Diesel fuel of at least two types, including winter, summer and arctic ones and a non-converted residue, in which the content of light fractions, boiling away to 360C, do not exceed 3 wt %, at the third stage obtained are: light stable gasoline, a purified stabilisation gas, applied as a raw material for the Clause process for obtaining element sulphur. The invention also deals with a hydrocracking installation with obtaining motor fuels.

EFFECT: extension of the product assortment.

22 cl, 1 dwg, 1 tbl, 1 ex

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to the method of stabilisation of unstable gas condensate mixed with oil, which is implemented in two series operated strings fitted with contact and drain devices, from the top of the first column hydrogen sulphide, methylmercaptan and light hydrocarbons are separated, from the bottom deeply dimethyl- mercaptanised stabilite is separated which sent to the second rectifying column from which the hydrocarbonic fractions are separated which contain the mercaptans extracted later as odorants, nk-65C, nk-75C, or nk-130C in which respectively ethyl mercaptan, isomerous and normal propyl mercaptan and isomeric and normal butyl mercaptan or mixes of the respective merkaptan are concentrated, and from the string bottom the heavy rest is taken away. The invention also relates to the unit for stabilisation of unstable gas condensate mixed with oil.

EFFECT: refining of oil and gas condensate from hydrogen sulphide and a methylmercaptan, production of the range of hydrocarbon fractions.

14 cl, 3 dwg, 3 tbl, 4 ex

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of the preliminary oil distillation, where during oil distillation in atmosphere and vacuum rectifiers with production of the benzene and diesel fractions, atmosphere and vacuum gasoil and tar the first and second atmosphere rectifiers are equipped with semi-dead trays, that are connected by pipelines, respectively with the second atmosphere rectifier and vacuum column ensuring creation of the additional liquid refluxing.

EFFECT: reduced power consumption for the process and rational use of heavy oil fraction removed from semi-dead tray of the second atmosphere column.

3 cl, 1 dwg, 3 tbl

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the processes of oil refining, in particular to methods of stabilizing of kerosene fractions. The invention relates to stabilizing of kerosene fractions by means of hot separation of gas product mixture from the hydrodemercaptanisation reactor into gas and liquid phases, pumping of the liquid phase as raw for the kerosene fractions stabilizing string, and also the gas phase cooling, condensation with the subsequent separation in the cold separator into hydrogen containing gas and liquid phase, which is supplied as a component for live reflux of the stabilizing string, meanwhile liquid phase of the hot separator is supplied to the stabilizing string after cooling, and a liquid phase of the cold separator without preheating is supplied as a component of live reflux of the top tray of the kerosene fractions stabilizing string.

EFFECT: stabilization of kerosene fractions at minimizing of the load on the condensation system, decrease of energy consumption for preheating of flows using the simple process layout with one raw flow, providing of required quality of raw materials for catalytic reforming.

2 cl, 1 dwg, 4 tbl, 2 ex

Oil refining method // 2516464

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method including introduction of the heated raw material into the column for partial stripping with intake of light naphtha from the column top which is also used as reflux, intake of stillage residue, heating of stillage residue in a furnace and its distilling in a crude distillation unit equipped with the side steaming sections and delivery to the section bottom and complex water vapour column, intake of naphtha balance from the complex column, intake of kerosene cut, light and heavy diesel oil cuts from the side streams through the steaming sections and intake of fuel oil from the bottom of the complex column. The heated raw material is introduced as the upper and lower stream into the column for partial stripping. The lower stream, which is heated in the furnace and delivered to the column bottom, represents more than half of the raw material, naphtha balance is returned to spraying of the column of partial oil stripping and discharged with light naphtha and the side stream of the column of partial oil stripping delivered there into a section between intakes from it to the steaming sections of kerosene cut and light naphtha, at that in the section above the side stream of the column of partial oil stripping there should be 64% of the total number of plates installed in the column and in the stripper placed above the inlet of the heated stream to the column bottom there should be 9% of plates of the same total number.

EFFECT: increasing feed capacity, reducing energy and capital expenditures.

1 dwg, 3 tbl

Oil refining method // 2515728

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the oil refining method that includes introduction of the heated raw material into the column for partial stripping with an intake of light naphtha from the column top which is also used as reflux and intake of the stillage residue, heating of the stillage residue in the furnace and its distilling in a complex water vapour column equipped with side steaming sections and delivery to the sections bottom and the complex water vapour column of the heated flows and use of live reflux and circulating reflux, intake of naphtha from the top of the complex water vapour column, intake of light and heavy diesel oil cuts from the side streams through the steaming sections and intake of fuel oil from the bottom of the complex water vapour column, stabilisation of gasoline cuts with production of gas and stable gasoline. The heated raw material is introduced as the upper and lower stream into the column for partial stripping, at that the lower stream represents more than half of the raw material, which is heated in the furnace and delivered to the column bottom. Naphtha balance is returned to the column of partial oil stripping, stabilization of gasoline cuts is made by discharge of naphtha from the return zone of the column of partial oil stripping delivered there into the steaming section, to this section bottom heat is delivered, at that vapour from the steaming section is returned to the column of partial oil stripping and stable gasoline is outputted. Balance excess of gasoline cut from the top of the column for partial stripping is returned to the top of the steaming section in this column together with the side stream, combination gas from the top of the reflux drum in the column for partial stripping is fed to the absorber bottom, to the absorber top the cooled liquid is fed and this liquid is taken below the side stream intake to naphtha steaming section, gas is outputted from the absorber top, liquid from the absorber bottom is returned to the column for partial stripping below the output of the side stream to the steaming section, below the input of the liquid from the absorber bottom to the column for partial stripping the side stream is taken and delivered to the complex water vapour column below the point of the side stream output to naphtha steaming section.

EFFECT: reducing energy and capital expenditures.

1 dwg, 3 tbl

FIELD: oil and gas industry.

SUBSTANCE: method of gasoline stabilisation is implemented by unstable gasoline delivery to the feed zone of the stabiliser tower, output of stabilisation fumes from the top of the stabiliser tower and output of liquid from below of the stabiliser tower. Stabilisation is carried out in a vertical fractionating unit with falling-down film and three heat-and-mass exchange sections, one of them is located above the feed zone while the two remaining sections - the medium and the lower one - are located below the feed zone. The upper heat-and-mass exchange section of the fractionating unit is cooled by delivery of the cooling agent to the upper part and outputting it from below part of the heat-and-mass exchange section. The medium and the lower heat-and-mass exchange sections of the fractionating unit are heated up by heat medium delivery to the lower part and outputting it from below of the section and by delivery of stable gasoline from below of the fractionating unit to the lower part and outputting it from the upper part of the medium heat-and-mass exchange section.

EFFECT: simplifying the method, increasing output of the stable products and reducing energy costs.

1 dwg, 3 ex

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the sphere of raw hydrocarbons processing. Invention is referred to processing of hydrocarbon (oil containing) stock in two-region reactor using gaseous agent in which initial stock is fed to the upper region of the reactor where temperature of 250-350C is maintained and gaseous agent is fed to the lower region of the reactor where temperature of 400-450C is maintained; extraction of wax fraction is made from the lower region of the reactor and is fed to stage of its partial condensation; in result liquid hydrocarbon fraction and steam-gas mixture are obtained; after separation of highly volatile hydrocarbons from initial stock in the upper region of the reactor the resultant liquid mix of hydrocarbons is supplied to the lower region of the reactor through an overflow pipe. Invention is also referred to two-region reactor.

EFFECT: processing of hydrocarbon stock containing up to 50% of paraffin.

2 cl, 1 dwg, 3 ex

Oil refining method // 2484122

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil refining method involving recuperative oil heating, its partial stripping in the first crude distillation unit with extraction from the top of the crude distillation unit of light gasoline fraction, heating of residue of the first crude distillation unit in the furnace with its supply to feed zone of the second crude distillation unit for separation of stripped oil into heavy gasoline fraction, kerosene, diesel oil and fuel oil, with extraction from the first crude distillation unit of side stream from a lower semi-blind plate of the reinforcing section and its supply to lower semi-blind plate of the reinforcing section of the second crude distillation unit, from which atmospheric gas oil is extracted through additional side stream.

EFFECT: reduction of power costs for carrying out the process and enlarging the extraction of oil products in the second crude distillation unit.

1 dwg, 4 tbl

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: 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

Up!