Oil purification method

FIELD: oil and gas industry.

SUBSTANCE: invention relates to improved oil purification method with higher efficiency comprising preliminary mixing of oil and washing liquid by feeding them into a mixer, supplying the formed mixture to a flow settling tank for gravitational separation, where in the mixer the jets of purified oil and washing liquid are directed towards each other with equal cross-section at the point of collision of jets, from the mixer the mixture is directed into the flow settling tank for gravitational separation through a horizontal slit diffuser with a height providing laminar flow of mixture layer from diffuser outlet.

EFFECT: invention is intended for purifying oil contaminated with floating liquid medium, for example, formation water or flushing liquid and can be used for preparation of oil at fields and oil refineries, and in any industry where such a need arises.

1 cl

 



 

Same patents:

FIELD: oil-and-gas industry.

SUBSTANCE: proposed device comprises tar cleaning reactor with mixer, condenser and vessel for dried acid tar. Proposed reactor comprises cover with inlet for loading acid tar and water and electric heater. Said mixer is equipped with electric drive. This device incorporates extra pipeline with shutoff valve and accessories, drying chamber with electric heater with perforated plate and frame composed by four interconnected struts. Note here that said reactor is connected with drying chamber. Said drying chamber is connected with condenser via pipelines with shutoff valve and accessories. Drying chamber is mounted at said frame to inclined position. Invention relates also to process to be implemented at above described plant.

EFFECT: simplified process, higher quality of purification.

12 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to chemistry. Proposed method comprises multistage separation, cleaning of separation gases from hydrogen sulphide by catalytic oxidation of air by oxygen with further extraction of liquid oxidation products, sulfur and organic sulfur compounds, from reaction gases and feeding of purified gas to end separator for stripping. Liquid oxidation products in amount of 0.1-3.5 kg/t of oil are fed for stripping while prepared oil in amount of 2-10 l per 1 m3 of reaction gases are directed for flushing.

EFFECT: higher quality of purification and yield, environmental protection.

1 dwg, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of desalinating a gas condensate on a unit for washing the gas condensate with fresh water, involving feeding fresh or low-mineralised water for mixing with the gas condensate, wherein a demulsifying agent is added beforehand in a pipeline. The process is carried out in a turbulent apparatus with a diffuser-confusor design, wherein the prepared gas condensate at 30C is fed into the input channel of the first section of a tubular turbulent apparatus with a diffuser-confusor design with volume rate of 22-25 m3/h. Further, 1-1.5 wt % washing water is fed into the first section of the mixing apparatus coaxially through a perforated pipe with a closed end.

EFFECT: simple design of the mixing apparatus, low metal consumption, reduced pressure drop and low water consumption.

4 dwg, 3 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of removing contaminants from a stream of synthetic wax obtained from a Fischer-Tropsch reaction. The method involves two separated steps. Formation and growth of particles which contain a contaminant. The said particles have size which is sufficient for their easy removal. The said formation and growth is stimulated by treating the said stream of wax with an aqueous fluid medium which possibly contains an acid; and removal of a certain number of particles from the stream of synthetic wax using one or more particle removal operations. The aqueous fluid medium is mixed with the stream of wax such that, water content ranges from 0.25 to 2 wt % of the weight of the stream of wax, and acid content ranges from 0.005 to 0.5 wt % of the weight of the stream of wax. Temperature of the wax mixed with the aqueous fluid medium is kept at 160C and the stream of wax with the aqueous fluid medium are kept at high temperature for at least one minute.

EFFECT: efficient removal of contaminants from streams of hydrocarbons.

15 cl, 2 ex, 1 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: method of processing hydrocarbon paraffins involves hydrothermal processing metal-oxygenate components contained in hydrocarbons obtained using Fischer-Tropsch method at temperature above 100C, where hydrothermal processing is carried out with water at temperature ranging from 100C to 400C, and hydrothermal processing is carried out after passing the first filtration zone at pressure 0.1-10 MPa for 1-60 minutes, where water is added in order to carry out hydrothermal processing, as well as a method of processing hydrocarbon paraffins, which involves chemical processing metal-oxygenate components contained in the hydrocarbon paraffins obtained using the Fischer-Tropsch method with one or more chemical processing reagents selected from organic acids and anhydrides, carried out in a single liquid phase in order to modify metal oxygenates.

EFFECT: use of given methods prevents clogging of catalyst layers with metal-containing particles.

20 cl, 13 tbl, 1 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to a method of calcium content decrease in fluid hydrocarbon medium, which includes contacting of mentioned above fluid hydrocarbon medium with a sequestrant, represented with a carboxylic acid for calcium containing separating complex formation, b. contacting of mentioned above fluid hydrocarbon medium with water medium for emulsion formation, in which after the mentioned above emulsion separation, at least part of the mentioned separated calcium containing complex stays in the water medium, and contacting the mentioned water medium with water soluble or water dispersing polymer, with I formula for the calcium disposals inhibition on surfaces, contacting with the mentioned above water medium, where the polymer has: (I) formula, where E - is a repeating fragment, which remains after non-saturated ethylene type compound polymerization, R1 is a hydrogen atom or the lowest (C1-C6)- alkyl or carbonyl, Q - is O or NH, R2 - is the lowest (C1-C6)-alkyl, hydroxy - substituted the lowest (C1-C6)-alkyl, the lowest (C1-C6)-alkyl sulfonic acid -(Et-O)-n, -(iPr-O)-n or -(Pr-O-)n, where n - is a variable from around 1 up to 100, and R3 - is a hydrogen atom or XZ, where X - is anion radical, selected form a group, consisting from SO3, PO3 or COO, Z - is hydrogen atom or atoms or any other water soluble cationic fragment, which serves is a balance in X anion radical valence; F - when presented, is a repeating fragment with a II: formula, where X and Z are the sane as in I formula, R4 - is a hydrogen atom or (C1-C6) the lowest alkyl, R5 - is hydroxy - substituted alkyl or alkylene, which has from 1 to 6 atoms, and XZ can or can not to be presented, c and d - are positive whole numbers, e is not-negative number, and j is equal to 0 or 1.

EFFECT: calcium disposal decrease on a surfaces contacting with water phase water in oil separated emulsion.

21 cl, 7 ex, 7 tbl

FIELD: oil-and-gas production.

SUBSTANCE: invention related to method of diesel fuel refinery and aimed to increase quality of a typical and off-quality fuel by decontamination it out from harmful impurities. Invention consists diesel fuel decontamination method, which includes dosed mixing of row fuel with water, solution cavity treatment and its separation on the fuel and deposits and water in a precipitation tank, before dosed mixing with a row fuel water to be saturated with iron ions till solution get yellow-brown colour with pH>6, solution cavity treatment executed by supersonic sound during its CO2 barbotage with temperature 75-80C and overburden relatively to solution pressure >0.2 gatm, after that solution treated with light photons with energy 60-70 kkal/mole, passed through magnetic field and forwarded to tank.

EFFECT: invention is also related to diesel fuel decontamination equipment.

13 cl, 1 ex, 1 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of reaction mixture processing, obtained by Fischer-Tropsh process (F-T), which includes synthesis-gas, Fischer-Tropsh hydrocarbons, oxygenates and catalyst particles, claimed method being characterised by including: (a) modification of metal-oxygenate components, contained in reaction mixture, obtained by Fischer-Tropsh process, in hydrothermal reaction zone and (b) influencing with subjected to filtration adsorbent on reaction mixture obtained by Fischer-Tropsh process, in hydrothermal reaction zone, subjected to filtration adsorbent being added into hydrothermal reaction zone.

EFFECT: application of given method allows to reduce formation of depositions on technological equipment.

10 cl, 3 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention includes the primary methanol separation on the hydrophilic ultrafine or superfine fiber up to the residual methanol concentration no more than 250 mg/l of the liquid hydrocarbons, extraction of the methanol from liquid hydrocarbons with water, separation of the water solution of methanol from liquid hydrocarbons, removal of the purified hydrocarbons and water solution of methanol, if necessary the removal of the residual water solution of methanol from liquid hydrocarbons with sorption and following desorption and/or catalytical conversion obtaining hydrocarbons and water.

EFFECT: decrease of the energy consumption and efficiency increase in the process of liquid hydrocarbons purification from water methanol solution.

2 cl, 7 ex, 9 dwg

FIELD: chemistry.

SUBSTANCE: recovered medium is mixed with water in the ejector. It is accompanied with high-pressure water supply to ejector pump nozzle in the line connecting high-pressure system and ejector pump inlet. Thereafter mixed water and recovered agents are drained out through the pipeline to the sedimentation tank. Recovered suspension is collected from the tank through the pipeline connecting suspension layers and ejector pump inlet. Optimal performance of the ejector is ensured by observing the suggested ratios of ejector nozzle diameter, ejector diameter and ejector nozzle length.

EFFECT: higher productivity.

4 dwg, 2 tbl

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: chemistry.

SUBSTANCE: invention relates to method of increasing quality of residue of distillation of hydrocarbons, including hydrocracking of residue at the first stage of reaction with formation of flow, output from the first stage; hydrocracking of de-asphalted oil at the second stage of reaction with formation of flow, output from the second stage; fractioning of flow, output from the first stage, and flow, output from the second stage, with extraction of, at least, one distillate hydrocarbon fraction and residual hydrocarbon fraction, supply of residual hydrocarbon fraction into installation of de-asphalting with solvent and obtaining fraction of asphaltenes and fraction of de-asphalted oil.

EFFECT: higher total conversion of residue with reduction of catalyst introduction rate and quantity of consumed hydrogen.

21 cl, 4 dwg, 1 tbl, 2 ex

FIELD: metallurgy.

SUBSTANCE: invention relates to extraction of metals from flow rich in hydrocarbons and carbon residues with the help of treatment section. Proposed method comprises feeding of said flow to extraction by its mixing with appropriate hydrophilising agent to kill hydrophobic properties of said flow. Mix of said flow and said agent are fed so separation of liquid phase containing major portion of hydrophilising agent and hydrocarbons precipitated from solid phase. Separated solid phase is dried at 350C to remove medium-light hydrocarbon components. Separated solid phase, preferably dried, is fed for leaching by alkaline solution in the presence of air and/or oxygen, possibly, in the presence of emulsifier or its precursor. Then, leached mix is fed for separation to remove solid residue from leach liquor.

EFFECT: higher yield of valuable metals and hydrocarbons.

13 cl, 3 dwg, 1 tbl, 8 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to production of hydrocarbon fuel. The invention relates to the method including heavy charge suspension hydrocracking with obtained products of suspension hydrocracking; separation of the above products of suspension hydrocracking with obtainment of a tar pitch flow and a flow of heavy vacuum gas oil; mixing of at least a part of tar pitch with solvent in order to dissolve a part of tar pitch in the solvent; mixing of the dissolved part of tar pitch with at least a part of heavy vacuum gas oil with production of a composite product. The invention is related also to a device for hydrocarbon fuel and composite production.

EFFECT: producing turbine or bunker fuel with characteristics acceptable for burning in gas turbines or for producing different grades of bunker fuel.

1 cl, 1 dwg, 4 tbl, 3 ex

FIELD: oil and gas industry.

SUBSTANCE: this invention relates to processing of bituminous oils. The invention includes processes of dewatering, skimming of light oil products, deasphaltising. During processing dewatered bituminous oils is separated in process of skimming into light oil products and skimming residue, which is sent to deasphaltising by solution at temperature of 120-130C, pressure of 4.0-4.5 MPa and volume ratio of solution and raw stock of (1.5-2):1, processes of light oils skimming and deasphaltising of skimming residue are performed so that after mixing of obtained light oil products and asphalt-free oil sulphur content in it does not exceed 1 % by weight, at that the obtained mixture complies with regulatory requirements to low-sulphur liquid fuel.

EFFECT: production of fuel with sulphur content not exceeding 1%.

1 dwg, 5 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of dearomatising a gasoline fraction - pyrolysis material, which involves extraction of aromatic hydrocarbons from a gasoline fraction at 62-180C, obtaining a raffinate with low content of aromatic hyrocarbons, wherein the selective solvent used is a mixture containing 50-65 wt % N-methylpyrrolidone, 30-45% triethylene glycol, 3-7 wt % water.

EFFECT: low content of aromatic hydrocarbons in the gasoline fraction.

1 tbl, 2 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil stock quality improvement. This invention relates to method of improvement of refining residues quality including residues hydrocracking at the first stage (14) of reaction with formation of flow passing from the first stage; hydrocracking of fraction of asphalt-free oil at the second stage (22) of reaction with formation of flow passing from the second stage; supply of flow passing from the first stage and the flow passing from the second stage to separating system (26); fractioning of flow passing from the first stage and the flow passing from the second stage in separating system (26) with extraction of at least one distillate hydrocarbon fraction and residual hydrocarbon fraction; and supply of residual hydrocarbon fraction to the plant (32) of grout deasphalting obtaining fraction of asphaltens and fraction of asphalt-free oil.

EFFECT: increasing general conversion of residue.

17 cl, 4 dwg, 1 tbl, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to a method for dehumidification and deasphaltasing of crude oil involving the stages of: mixing crude oil containing hydrocarbons, asphaltenes and water with one or more solvents to prepare a first mixture; the first mixture is selectively separated to prepare an oil phase and a water phase wherein the oil phase contains hydrocarbons, asphaltenes and a solvent; asphaltenes are selectively separated from the oil phase to prepare deasphaltised oil containing at least a portion of hydrocarbons and at least a portion of the solvent, and an asphaltene mixture containing asphaltenes, a remaining portion of hydrocarbons and a remaining portion of the solvent; the solvent is selectively separated from the asphaltene mixture, and at least a portion of the separated solvent is recycled into the first mixture. The invention also refers a method for dehumidification and deasphaltasing of the hydrocarbon supplied material.

EFFECT: improved crude oil dehumidification with minimal capital expenses.

22 cl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to a desalted and dehydrated oil processing method by mixing non-synthesised solvent in the quantity of 8 to 15% of oil mass during 3-5 hours at the ambient temperature with further fractioning of the mixture and with extraction of products.

EFFECT: increasing the yield of light products.

2 tbl, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: task is settled by extraction of nitrogen-containing compounds from hydrocarbon phase into ion fluid (process solution). Process solution represents ion fluid, for example, on the base of alkilimidazol cation and tetrafluoroborate anion or chloride, that contains diluted compounds of transition metals selected from the group including complexes of cobalt (II) and cuprum (I) with 4,5- dicarboxyphtalocianin. Method includes further separation of hydrocarbon fracture from ion fluid and electrochemical regeneration of ion fluid. Ion fluid regeneration is done by electrochemical oxidation of nitrogen-containing compounds.

EFFECT: improvement of hydrocarbon raw materials quality.

3 cl, 1 tbl, 15 ex

FIELD: process engineering.

SUBSTANCE: invention relates to reinforced ions-permeable separator. Note here that separator comprises at least one separation element and at least a hollow bypass channel abutting on said separation element. Note also that at least one separation element comprises binder and metal oxide or hydroxide dispersed therein. Said separation element features first bubble extrusion pressure of at least 1 bar and resistance at indirect flushing of at least 1 bar. Note that first bubble extrusion pressure is defined by ASTM E128 and ISO 4003. Besides, relates to application of separator in electrochemical cell, electrochemical cell and to method of hydrogen production.

EFFECT: reduced cross contamination of hydrogen and oxygen.

27 cl, 4 tbl, 11 dwg

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