A device for the separation of emulsions

 

The invention relates to techniques for the separation of immiscible liquids, in particular emulsified hydrocarbon media with a different type of emulsions in a wide range of water content, and can be used for deep dehydration of crude and trapping of oil, gas condensate and light oil products, liquefied hydrocarbon gases and other non-viscous hydrocarbon environments in oil and gas production and refining, chemical and other industries. The device includes a cylindrical housing in which is placed vlagootvedeniya package composed of an oleophilic and hydrophilic elastic porous-cellular polymeric materials with a fixed porous cellular structure, laid cross-layer angle below the angle ettekanne fluid to the moving stream at the location of vlagotrebovatelnogo package above the phase boundary. The package further comprises a porous cellular materials with modified to enhance cholesterolic properties of the surface or consists only of materials with such a surface. Vlagootvedeniya package, based on a blank wall, covers the working section along the apparatus. Bottom ultat is to increase separation efficiency. table 1. , 2 Il.

The invention relates to techniques for the separation of immiscible liquids, in particular to devices for separating and deep dehydration emulsified hydrocarbon media with a different type of emulsions in a wide range of water content, and can be used for deep dehydration of crude oil and trap, gas condensate and light oil products, liquefied hydrocarbon gases and other non-viscous hydrocarbon environments in oil and gas production and refining, chemical and other industries.

The closest effect is achieved is a device for the separation of emulsions, highly effective when used either in the process of demulsification flooded with light oil products and crude oil for deep dehydration and desalination him in the preparation of the refineries and oil fields [1]. RF patent 2146550, publ. BI 8, March 2000,

In a horizontally mounted cylindrical device placed vlagootvedeniya package from the composition oleophilic and hydrophilic elastic porous foamed cellular polymeric materials with a fixed porous mesh the integrity of the hull at an angle to the horizontal of not less than angle ettekanne fluid in the direction of a flowing stream while providing a location vlagotrebovatelnogo package level, above the phase boundary.

Device with high economic efficiency is used in the process of demulsification flow high flow rates and varying degrees of water content in large-scale industrial schemes, such as dehydration and desalting of crude oil, with a significant turnover of flushing water. A high degree of dewatering is provided by the optimum selection of the settlement area of the filter and the thickness of the filtering-colesterolo layer of the package, as well as the composition of the optimal set of porous-cellular polymeric materials with oleophilic and hydrophilic properties at the maximum advanced filtering and cholesterola surface due to the fixed porous cellular structure used polymeric materials.

However, with the obvious structural advantages in the ease of technical execution, the device has the following disadvantages.

Thus, the modernization of existing industrial schemes refineries to improve the efficiency of deep dehydration of petroleum products and crude oil is mainly due to the reconstruction of the existing tanks in the composition technologies is sustained fashion filtering and coalescing packs and carry out the purpose of high-efficiency devices for breaking emulsions of various types ("water in oil" or "oil in water") and various degrees of dispersion and watering. The large sizes used storage equipment contribute to the effectiveness of dehydration, because a significant amount in the unit before package helps reduce the effect of turbulent flow, and effective evacuation of coarse moisture in the zone of separation of the phases before the service and after it.

However, the overlap of the full work of the cross section of the apparatus of filtering and cholesterosis service is not always possible effectively to use the whole filtering surface and volume vlagotrebovatelnogo package under various technological parameters of the working units in each case. Even with adequate drainage of the aqueous phase, in some cases, the zone of stasis when wet can take in substantial package volume.

If you increase load on the stream at high water there is a need of increasing the thickness of the filter, it may affect the stability of the regime cholesterola filtering more viscous fluids, because with increasing speed more viscous flow through the filter layers of greater thickness (efficiency coalescence in more viscous media requires increasing the thickness of the filter slanta may increase the pressure drop to within, which can cause permanent deformation of the elastic porous-cellular polymer material, which will reduce the effectiveness of dehumidification.

Most reasonable increase in performance of the apparatus to carry out by increasing the filter surface vlagotrebovatelnogo package, however, this condition cannot always be met by increasing the size of the apparatus, especially in cases of reconstruction of installations in the absence of existing production. In addition, the issues of reconstruction of production in the oil refining and oil production with the use of filtering and cholesterolic vlagootvedeniya devices in large technological schemes of treatment plants raw materials with high turnover of crude oil and wash water is constrained in some cases, the questions address the issue of placing the required number of metal equipment in cramped conditions at industrial sites.

The proposed device is intended to improve the efficiency and intensification of the process of demulsification, watered hydrocarbon fuels and other products, and crude oil (oil) in the process of deep dehydration is by maximizing the filtration area without increasing the volume of devices.

This technical result is achieved by the fact that for deep dehydration continuous emulsified flows of crude oil and hydrocarbon products in a wide range of water cut and high performance of the proposed device has a cylindrical housing in which is placed vlagootvedeniya package from the composition oleophilic and hydrophilic elastic porous-cellular polymeric materials with a fixed porous cellular structure, laid cross-layer angle below the angle ettekanne fluid to the moving stream at the location of vlagotrebovatelnogo package above the phase boundary, moreover, the composition of the material of the package may further comprise a porous cellular materials with a modified surface, or may consist only of a set of materials with a modified surface, and vlagootvedeniya package, based on a blank wall, covers the operating section in the direction along the apparatus, and the lower part of a package installed at an angle of ettekanne fluid to the vertical axis of the hollow partitions.

In Fig.1 shows a longitudinal section of the apparatus, General view; Fig.2 - cross-connections: input emulsified water product (2), output dehydrated product (4), aqueous phase (5); a distribution device (3), vlagootvedeniya package (6), dead solid wall (7), catchment pocket (8) and device for the automated removal of the aqueous phase (9, 10).

The portion of the apparatus before the package is a reception area (11), and after the service - area drainage dehydrated product (12).

To maximize the device performance, by increasing the filtration area vlagotrebovatelnogo package without changing the dimensions of the apparatus, vlagootvedeniya package have overlapping working section not across, and along the apparatus.

Vlagootvedeniya package (6) represents a set of filter layers of porous mesh, mainly elastic foamed polymeric materials with a fixed porous cellular structure, the components of the optimal composition cholesterolic materials with natural oleophilic and hydrophilic properties of a highly porous cellular surface or surface modified, or composition both scored in a certain sequence.

The choice of material is preferably porous-cellular foamed elastic poly is of composition of filtering and coalescense package due to the highly developed surface, formed in the process of manufacturing technology. Porous cellular structure materials, even at maximum density porous-cellular space with a minimum size of cells and pores, allows for minor hydraulic resistance package to provide great performance of continuous flow. To enhance the hydrophobic or hydrophilic properties cholesterola surface materials can be modified in various ways with stable chemical and mechanical durability in production environments.

Depending on the nature of the medium being filtered and settings dewatering technologies are selected in the composition of the appropriate and most effective materials.

High coalescence provides deep dehydration of hydrocarbon environments with various degrees of flooding when high-resistance fine emulsions.

For the formation of each of the filtering layer uses a material with the same surface properties and porosity. The layout of the layers according to the characteristics of unmodified and modified materials, i.e. their number and alternation in certain posredovanje exception of stagnant zones soaking in the package and provide maximum filtering and cholesterola surface.

Each filter layer consists of a sheet of material of uniform thickness and shall be smooth with no bumps and dents. The sheets fit tightly between them and firmly adhere to the walls of the housing around the perimeter of the filter surface to avoid deformation during operation and education channel movement. Each subsequent layer of a solid surface overlaps the joints of sheets of the previous layer. The first and the last layer of material in the package is limited to metal grids. All layers of the filter pack evenly pressed nets to each other by means of bolts, to avoid compromising the integrity of the filter layer during the movement of the filtered flow without disturbing the structure of the porous-cellular space of the material, which could lead to reduced internal volume and an active porous-porous surface. In the case of considerable size area of filter surface vlagotrebovatelnogo package, for reliability preservation of optimally dense packing of layers of material, if necessary, use additional intermediate grid. The whole package is embedded in the frame and install on a blank partition apparatus along the entire length.

When neophotonics. Filtering and coalescing package is installed along the vehicle with the tilt of the filter layer at an angle of ettekanne fluid in the direction of a flowing stream.

When the location of the package along significantly shortens the path of movement of emulsified stream as in the reception area (11) to the package (6) and zone output dehydrated product (12) from the package to the socket output (4), since the path length was equal to the diameter of the device.

In order to enhance coalescence of coarse moisture before service flow of the emulsion through a distribution device (3) is carried out mainly in the direction of the wall of the body of the apparatus. When the blow jets emulsified water product on the casing wall deformation and merging larger particles of water sediment and runoff them on the wall in the catchment pocket (8). The equipment catchment pocket optimum volume that allows you to make a section area of the water and oil phases of the apparatus, it is necessary, because otherwise it will take a considerable amount of apparatus. The presence in the apparatus, moreover, requires strict observance of the conditions of the maximum conversion of turbulent flow in a laminar avoid perevedennogo package the reduction of the effective area cholesterola filtering and efficiency of dehydration.

Avoid soaking the bottom of the package due to kolestiramina moisture that may accumulate during service due to subsidence krupnevshim drops during extrusion from the structure of the porous-cellular space at high velocities of flow and stream water film on the inclined surface at the outlet of the package, the phase boundary of this zone (12) will also be displayed in the catchment pocket, in which a stable interface level supported by an automated device for dewatering (10).

Timely evacuation of moisture from the bottom of the filtering-colesterolo package, to avoid stagnation, is achieved because of the lower wall (plate) frame package also has an angle of inclination toward the vertical axis of the hollow walls, contributing to the timely removal kolestiramina moisture from the structure of the porous elastic material, which flows in the direction of the tilt and evacuated sedimentation in the catchment area of the pocket.

The device operates as follows.

Flooded water-in-oil emulsion with varying degrees dispersion apparatus (11). Upon impact of the jets on the wall of the housing of the apparatus (1) is the coalescence of coarse water suspensions. The aqueous phase film and large drops ukutyvaemsya in the bottom portion of the apparatus and further in the catchment pocket (8), where the separation of oil and water phases. Turbulent flow of the emulsified product is substantially transformed into a laminar comes on blagoustroitelnyh package (6).

When the volume filling apparatus of the porous honeycomb structure package material is displaced air, and due to the oleophilic surface properties of porous and cellular space is uniformly filled in the hydrocarbon environment.

Front filter layer package, composed of a hydrophobic material, is cholesterola surface water sediment larger than the size of the cells and pores of the materials used, and water drops wcreplays, in a collision between a roll on an inclined surface or falling down, falling down, accumulate in the settling zone of the catchment of the pocket (8). The height of the phase boundary in the catchment pocket is controlled by automatic means (9) for timely drainage in order to avoid mixing the aqueous phase with the incoming OBV with the size of the pores and cells of the subsequent filtering and cholesterolic layers of materials package takes place inside the porous cellular structure. Optimally matched composition of the layers of unmodified and modified materials with predominantly hydrophobic (oleophilic or hydrophilic high-performance cholesterola porous-porous surface allows you to avoid considerable thickness vlagotrebovatelnogo package. The coalescence of fine particles of the aqueous phase of the emulsion occurs both when the collision of particles in motion within the cells and pores of the hydrophobic layer, and in the process of film movement of the aqueous phase, in the layers developed hydrophilic surface with oticanjem simultaneously on inclined planes of the layers of the package inside, at the bottom and at the outlet of the package. Stiekema water film and settled kropyvschyna droplets accumulate in the drainage pocket and with a clear section of the phases, the aqueous layer was automatically a timely manner is displayed by using an automatic device (10) of the catchment of the pocket (8), providing a conclusion deeply dehydrated hydrocarbon stream. The optimal layout of the package, taking into account the surface properties of the materials used in the composition and characteristics of flooded streams hydrocarbon products or raw materials, eliminates drip takeaway is the awns of the device.

Increase efficiency in the conditions of intensification of the process of dehydration is evident in the following example. Water-in-oil was passed through vlagootvedeniya package composed of porous-cellular polymeric materials with different surface properties, typed in sequence with the optimal rotation, at different location of the package in the apparatus without the use of demulsifiers. The results of the comparative evaluation are shown in table.

Thus, the proposed device with vlagootvedeniem service of song, typed in a sequence of unmodified and/or modified oleophilic and hydrophilic porous-cellular polymeric materials with a fixed porous cellular structure, stable in hydrocarbon environments, while providing maximum filtration area at the location of the package along the apparatus, taking into account design features it can provide a high efficiency demulsification and greatly intensify the efficient removal of moisture from the package, in the dehydration of high-performance continuous streams of both crude oil and refined petroleum products. MA is to diminish the hydraulic resistance of the porous material with large industrial loads by flow and eliminate the deformation of the elastic polymer.

A significant increase in performance of devices with small dimensions helps to ensure compactness of technological schemes of large facilities while reducing the cost of bulky equipment, energy, reagent while reducing corrosion activity of the processed media.

Claims

A device for the separation of emulsions, comprising a horizontal cylindrical casing in which is placed vlagootvedeniya package, composed of a composition oleophilic and hydrophilic elastic polymeric materials with a fixed porous cellular structure, laid cross-layer angle below the angle ettekanne fluid to the moving stream at the location of vlagotrebovatelnogo package above the phase boundary, wherein the package further comprises a porous cellular materials with modified cholesterolic properties of the surface or consists only of materials modified to enhance cholesterolic properties of the surface, and vlagootvedeniya package, based on a blank wall, overlaps of the working section in the direction along the device is.

 

Same patents:

The invention relates to the oil industry, in particular to a device for outputting an intermediate layer of horizontal pressure tanks at the oil treatment plants

The invention relates to the oil industry and can find application, for example, in the separation technology of production wells, which is lifted from the well in the form of a liquid hydrocarbon emulsions and, in particular, in the form of emulsion gazoochistnoe

The invention relates to the field of the oil industry and concerns the methods of collection, separation, oil treatment and recycling, disposal of oily sludge

The invention relates to the dehydration of petroleum products, representing an emulsion type water in oil"

The invention relates to means for separating oil from its mixture with water

The invention relates to the field of nefteothodov, in particular to the technology of destruction and dehydration of oil-water emulsions

The invention relates to the technology of desalting and dehydration of oil and applied to the equipment and can be used in refineries and oil industries

The invention relates to methods of collection and preparation of oil at the oil fields with a small amount of oil

FIELD: oil industry.

SUBSTANCE: method includes mixing water-oil emulsion with drain water in line of inlet of first electric hydrator by dispersing drain water in volume 8-15% from volume of prepared oil at temperature 40-50°C. As washing water drain water is used from same oil deposit with mineralization less than saturation limit.

EFFECT: higher efficiency.

1 ex

FIELD: oil industry.

SUBSTANCE: method includes feeding oil emulsion to reservoir with flow 0,5-1 m3/hour through layer of drain water of same oil deposit with mineralization less than saturation limit at temperature 20-30°C and bed thickness of drain water 6-8 m. in reservoir oil is separated and directed to inlet of oil preparation plant.

EFFECT: higher efficiency, broader functional capabilities.

1 ex

FIELD: water treatment.

SUBSTANCE: invention relates to treatment of industrial and household waters, especially to separation of oil/water mixtures to remove coarsely dispersed and emulsified petroleum products therefrom. It is proposed to use styrene/divinylbenzene copolymer grains with fraction composition uniformity factor not higher than 1.6 as coalescent material to separated oil/water mixtures. In this case, price of material is lowered, oil/water separation efficiency is enhanced, and necessity of periodically washing material is omitted, whereas lifetime of material is prolonged, and efficiency temperature range is extended.

EFFECT: improved performance characteristics and reduced expenses.

2 dwg

FIELD: oil industry.

SUBSTANCE: method includes dispersing water in oil emulsion at input of accumulator. As water, drain-water of the same oil deposit is used with content of oil products no less than 60 mg/l and hard suspended particles no more than 50 mg/l in volume 8-15% of volume of prepared oil at a temperature 5-25°.

EFFECT: higher efficiency.

1 ex

FIELD: oil industry, particularly to prevent salt deposits in collector and measuring installations during oil production and transportation.

SUBSTANCE: method involves mixing product flows and transporting thereof, wherein compatible liquids are chosen for further mixing so that during mixing of above liquids oversaturated salt solution does not appear to prevent salt precipitation. Liquid for mixing is taken in amount enough to reduce salt concentration to value, which does not exceed saturated concentration and provides mineralization obtaining after liquid mixing. Mixing of liquid flows is performed out of process equipment and in tubes provided with release coating applied on inner tube surfaces.

EFFECT: increased simplicity due to elimination of chemical reagent usage and due to reduced number of stages.

4 ex

FIELD: dry chemical cleaning of clothing, in particular, separator and method for extracting of water from solvent in the process of dry chemical cleaning.

SUBSTANCE: separator has main chamber equipped with inlet for receiving mixture of siloxane solvent and water from dry cleaning system and including upper layer and lower layer separated from one another by gravity force and containing siloxane solvent and water, respectively, with water concentration in lower layer being greater than in upper layer, device for adjusting flow of said mixture delivered through said inlet into main chamber and feeding said mixture from main chamber into filter containing material facilitating in coalescence for receiving of mixture forced through by means of device for adjusting flow of said mixture, and additional chamber for further separation of siloxane solvent and water. Additional chamber is connected with filter and is equipped with first inlet adapted for removal from additional chamber of at least upper layer containing siloxane solvent, and second outlet adapted for discharge of water from lower layer of additional chamber onto bottom of main chamber and communicating with third outlet for discharge of water from main chamber. Method for separating of water from mixture of siloxane solvent and water produced after dry chemical cleaning of articles is performed by means of said separator.

EFFECT: increased efficiency in separating of water from siloxane solvent and water mixture through gravitational separation of two mixture components having insignificantly differing densities.

25 cl, 4 dwg

FIELD: oil industry, possible use for preparing oil emulsion at oil preparation plants.

SUBSTANCE: method includes feeding oil emulsion received from oil fields into devices for preliminary water disposal, separating water part from oil emulsion in preliminary water disposal devices and draining of water part to cleaning structures, cold separation of gas from oil emulsion in buffer vessels, heating of oil emulsion in heat exchangers and in furnace, hot dehydration of oil emulsion at hot sediment stages, desalination of oil emulsion in electric dehydrators with feeding of fresh water into electric dehydrators through disperser, feeding of drainage water after hot sediment and electric dehydrators to beginning of process at devices for preliminary water disposal, feeding of processed oil from electric dehydrators through heat exchangers into buffer vessels for processed oil, hot separation of gas in buffer vessels for processed oil and feeding of oil to consumer. In accordance to invention devices for preliminary oil disposal are divided on two steps. First step is operated in normal mode with feeding of oil emulsion from oil fields into inlet and from preliminary water disposal devices into buffer vessels. Second step is bound in parallel to first step, feeding of oil emulsion from oil fields into inlet of second step of preliminary water disposal devices is prevented. Drainage water after hot sediment and electric dehydrators is fed to inlet of second step of preliminary water disposal devices, without mixing thereof with water-oil emulsion received from fields. From second step of preliminary water disposal devices part of water is fed into cleaning structures and oil emulsion is fed into inlet of buffer vessels. Influx of drainage water into inlet of second step of preliminary water disposal devices is performed through lower manifold-distributor of device below layer of water cushion, while technological process in second step of preliminary water disposal devices is performed at temperature of 50-80°C.

EFFECT: increased efficiency of separation of water-oil emulsion at preliminary dehydration stage onto oil and water, stabilization of hot dehydration stages operation, desalination of oil and prevention of growth of number of intermediate layers from stable emulsions.

1 ex

FIELD: chemical industry.

SUBSTANCE: device comprises straight hollow cylinder (1) that has wall (2) at one of its faces or is in a contact with the wall. Cylinder (1) has outlet port (3) made in its side and outlet port (4) made in the other face for the phase to be separated, and third port (5) for the second phase. The size of outlet port (4) is less than that of outlet port (3), and size of port (5) is intermediate between them.

EFFECT: enhanced reliability.

18 cl, 6 dwg, 1 tbl

FIELD: oil producing industry; installations for the fields oil treatment.

SUBSTANCE: the invention is pertaining to oil producing industry, in particular, to the installations for the fields oil treatment. The installation for the oil treatment includes: the oil pipeline, the first stage of the oil treatment with the end divider of the stages (EDS) and the tank of the water preliminary discharge connected with the treatment facilities by the water discharge pipeline; the second stage of the oil treatment with the pipeline of the withdrawal of the low-mineralized semi-commercial water, which is connected to the oil pipeline; the heat exchanger installed on the oil pipeline after the first stage. EDS is supplied with the water discharge pipeline, which is connected to the pipeline of the water discharge from the tank of the preliminary water discharge before the treatment facilities, and the pipeline of the withdrawal of the low-mineralized semi-commercial water is connected to the oil pipeline before the tank of the preliminary water discharge. The treatment facilities are additionally supplied with the oil withdrawal pipeline, which is also connected with the oil pipeline located before the tank of the preliminary discharge of the water. On the water discharge pipeline located before the treatment facilities and on the oil pipeline located between EDS and the preliminary water discharge tank correspondingly there are the first and second heat exchangers, which are accordingly and sequentially connected to the heat exchanger of the second stage. The technical result of the invention is cooling of the finished commercial oil to the temperature of 30°С before its transfer to the oil stock accounting site; the increased efficiency of operation of the preliminary water discharge tank up to the water share in the oil of no more than 0.5 %; the increased degree of treatment of the oil-field water, the reduced power input.

EFFECT: the invention ensures cooling of the finished commercial oil to the temperature of 30°С before its transfer to the oil stock accounting site; the increased efficiency of operation of the preliminary water discharge tank up to the water share in the oil of no more than half percent; the increased degree of treatment of the oil-field water; the reduced power input.

1 dwg

FIELD: oil-producing industry; oil-refining industry; oil treatment.

SUBSTANCE: the invention is pertaining to oil treatment, in particular, to destruction of the oil-water emulsions and may be used in oil-producing industry and oil-refining industry. The device includes the pipe duct, the central partition and the additional partitions in parallel and symmetrically mounted concerning the central partition. The technical result of the invention is reduction of the time necessary for the preliminary dehydration of the oil, the decreased metal input used for the oil treatment naphtha, decrease metal input used for the oil treatment, the decreased volume of the additional batching dosage of the demulsifying agent.

EFFECT: the invention ensures reduction of the time necessary for the preliminary dehydration of the oil, the decreased metal input used for the oil treatment, the decreased volume of the additional batching of the demulsifying agent.

2 cl, 5 dwg, 1 tbl

Up!