Device for destruction of the oil-water emulsion at the oil transportation by the pipeline

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

 

The invention relates to the preparation of oil, in particular to the destruction of oil-water emulsions, and can be used in oil production and refining industries.

A device consisting of a pipe and is installed on the destination site bupleuroides having a longitudinal horizontal partition located in the Central part of the pipe cross section through which the flow is divided into two parts, one of which in the amount of 30-70% of the total volume of the mixture from the upper part of bupleuroides passed through the water layer, and the second in the amount of 30-70% is withdrawn from the lower zone and is introduced into the oil phase of settling device (see A.S. 702068, 10G 33/06, publ. BI No. 45 dated 05.12 1979).

The drawbacks are the need for bupleuroides, design features which cause additional dispersion of a water-oil emulsion with intensive mixing due to turbulent hydrodynamic effects that occurs during the transition from a pipe of small diameter in cableuropa tapered profile, and the failure of the process of destruction of the emulsion during its transportation to enter into the settling apparatus due to the proximity of bupleuroides and settling device.

The closest in technical essence to offer which is a device for breaking oil-water emulsions during transportation by pipeline, includes tubing and the longitudinal partition, installed in the Central part of its cross section (see A.S. 1142499, 10G 33/06, 01D 17/04, publ. BI No. 8 of 28.02.1985).

The disadvantage of this device is the lack of efficiency of destruction of oil-water emulsions: segregated free water and large drops, which appeared after the partition in the upper part of the tube, through the edge of the bulkhead in the back going down rassredotochivaniya in the flow of oil. As a result, the flow of oil-water emulsion, which appeared after the partitions below it, which is dominated by small drops, passes through rassredotochivshey in oil water in a small along the length of the plot, and therefore, the interaction of small droplets and free of water or little, or no, that is not possible as efficiently as possible to produce the destruction of the emulsion.

An object of the invention is to improve the quality of the destruction of oil-water emulsion in the oil gathering system, reducing the time required for preliminary dehydration of oil, which will lead to lower metallosalen preparation of 1 ton of oil by reducing the required amount of settling of the equipment and reduce the amount of additional dosing of the reagent-demulsifier supplied to the oil treatment unit.

The technical problem is asaeda described device for breaking oil-water emulsions during transportation by pipeline, including the pipeline and the Central partition, made in the form of a rectangular plate, gently rolled in a spiral, with its edge at the output rotated 180° towards the edge at the entrance of the emulsion.

What is new is the fact that the pipeline is provided with an additional partitions in parallel and symmetrically installed with respect to the Central partition, all partitions are supplied with the output of the final emulsion horizontal sections with a length of not less than 1.8 diameter of the pipe, and the end of the horizontal section of each partition, below, made longer by not less than 0.5 m the same area overlying the partition.

Figure 1 shows schematically the proposed device, a longitudinal section; figure 2 - horizontal sections of the walls of the device; figure 3 is a section a-a in figure 1; figure 4 is a cross-section B-B in figure 1; figure 5 - section b-b In figure 1.

The proposed device includes a pipe 1 (see figure 1), the Central partition 2 and additional partitions 2', parallel to and symmetrically installed with respect to the Central partition 2, which contribute to the treatment layer of the fluid flow. Structurally, each of the partitions - Central 2 and additional 2'-represents a rectangular sheet of metal attached tightly to linkattributes and rolled smoothly along the spiral thus, that the left edge of the beginning of the sheet at the end becomes right and Vice versa, and the end of the horizontal section of each partition, the longer, the lower it is. Figure 3 Central wall 2 and additional partitions 2' are represented by horizontal profile and, as the distance along the flow inclination angle to horizon increases and becomes equal to 90° (see figure 3) and 180° (see figure 4).

This profile walls 2 and 2' (see figure 1) allows you to transfer the bottom layer of the fluid flow IV (see figure 3) in the top (see figure 5) and Vice versa (see figure 3-5), and the remaining layers I-II-III, which splits the input stream of liquid falling on the walls 2 and 2' (see figure 1), to draw the mirror with respect to the Central partition 2. While separated free water of the bottom layer IV of the thread goes to the top, and the top layer I with small drops significantly dominant over large jumps in the lowest layer of the fluid flow. Other layers, which splits the input stream of the emulsion, falling on the walls, draw the mirror with respect to the Central partition 2 its location in the stream of the emulsion. Part of the flow of the emulsion, which appeared after the set of partitions 2 and 2' in the upper zone of the pipeline, flowing down over the edge of the upper partition, allows nicepriceusa lowprotein through the "filter" of the water, that will lead to the transfer of a part of small droplets in the aquatic environment. The presence of the proposed device, the several walls 2 and 2' allows to reduce time of the gravitational settling of small, did not make it into the aquatic environment, water drops 2-3 times by reducing the height of their location from the bottom of the pipe 1, and transfer the remaining droplets in the aqueous medium by filtration through it layer by layer over the flow of oil-water emulsion.

From field studies, depending on the viscosity, density, speed, water-oil emulsion is transported by pipeline, obtained the minimum length of the horizontal section 3 and 3' of the walls 2 and 2', which is not less than 1.8 diameter of the pipeline. In addition, each located below the horizontal plot 3 and 3' partition 2 or 2' should be not less than 0.5 m longer than the upper, as evidenced by the necessity of forming a uniform flow over the edge of the partition 2 or 2' of free water, through which filtered nigerarenai layer of oil-water emulsions containing / her non-captured water droplets with a predominance of greater size than above it is after walls 2 and 2'.

Thus, horizontal partitions 2 and 2' accelerating the destruction of the oil-water emulsion through the implementation of filtrowanie the all layers of its flow through the separated free water, in order to further improve the quality of the destruction of the oil-water emulsion in the oil gathering system, to shorten the time required for preliminary dehydration of oil, and will lead to lower metallosalen (required number of settling equipment) preparation of 1 t of oil and chemical consumption-demulsifier.

An example of a specific implementation.

Oil-water emulsion, characterized by the following parameters:

- performance liquid up to 9600 m3/day;

- the cut - up to 88%;

- viscosity - 78-200 MPa·C;

- density - 920-960 kg/m3;

- the content of iron sulfide - 75-1600 mg/DM3,

transported by pipeline 1 500 mm in diameter, placed in it a device for breaking oil-water emulsions, consisting of three horizontal partitions - Central 2 and two additional 2'. End horizontal section 3' of the uppermost partition 2' had a length of 1.2 m, and below - 2.0 m and 2.7 m, respectively. The speed of oil-water emulsion was 0.3-0.6 m/s the Results of these studies are given in the table.

Table
No.Location sensingVolume fraction of water, %Section phases in which aftervote (water level), mm
the upper section of the streamthe average cross section of the streamthe lower section of the stream
1To the device14,2of 40.385,0150
2After the device (2 m after its end)6,523,1100,0 (water)180

As can be seen from the table data after the device is the volume fraction of oxen in the oil in the upper layer flow was 6.5%, closer to the middle of the stream and 23.1%. The prototype volumetric fraction of water in the oil in the upper section of the flow was 12-24%.

Technical and economic efficiency of the proposed device consists of reducing the time required for preliminary dehydration of oil, which leads to a decrease of metallosalen preparation of 1 ton of oil by reducing the necessary number of settling equipment and reducing the amount of additional dosing of the reagent-demulsifier supplied to the oil treatment unit. As a result of application of the device are reduced Metallostroy - released on the site prior separation of the free formation water 1-2 settling device with a capacity of 200 m3each, and saves reagent demulsifier in the calculation of 5-10 g/t of oil.

1. The device Daresbury oil-water emulsion during transportation by pipeline, including the pipeline and the Central partition, made in the form of a rectangular plate, gently rolled in a spiral, with its edge at the output rotated 180° in relation to the edge of the inlet, wherein the pipe is provided with an additional partitions in parallel and symmetrically installed with respect to the Central partition, all partitions are supplied with the output of the final emulsion horizontal sections with a length of not less than 1.8 diameter of the pipe, increasing from top to bottom.

2. The device according to claim 1, characterized in that the end of the horizontal section of each partition, below, made longer by not less than 0.5 m the same area overlying the partition.



 

Same patents:

FIELD: petroleum processing.

SUBSTANCE: invention relates to treatment of liquid oil slime with elevated content of suspended impurities. Oil slime is first preheated to temperature at least 70°C, after which fed into shaking sieve to separate suspended particles at least 0.15 mm in size. Cleaned liquid is transferred into intermediate vessel and therefrom either directly into decanter or into tank for raw material at slime processing installation. Installation for pretreatment of raw material before processing involves centrifugal separation of slime in decanter and has receiving tank for initial slime with steam registers inside the tank, shaking sieve with outlet, intermediate vessel for cleaned liquid, pumps, and container for collecting suspended impurities. Receiving tank for initial slime is provided with grid and covered mesh box with mesh size larger than 25 mm. In a specific embodiment of invention, installation further contains sand separator (hydrocyclone) and second intermediate vessel for oil-containing liquid.

EFFECT: prolonged stable operation period.

5 cl, 2 dwg

FIELD: installations for purification of industrial waste oils.

SUBSTANCE: the invention presents installation for purification of industrial waste oils. The installation is made in the form reminding hexactinal star, each beam of which has a rectangular cross-section and is a unit of a two-stage purification and all forward butt surfaces of each block are fused to each other in such a manner that forms hexahedral space, in the center of which on interception of vertical axial planes of the units there is a vertical cylindrical container linked to each unit by the oil pipelines and valves. At that each unit is placed in the body with a hermetically tightened cover with a felt washer and contains in series beginning from the center a perforated plate with stops, a fabric gasket, a form with cells for a filling material, small-mesh copper lattice, a sheet batting, a perforated plate, a perforated plate with stops, a fabric gasket, a form with cells for a filling material, a small-sized copper mesh, batting, small-mesh copper lattice, a sheet batting, a perforated plate with stops, an outlet for the purified oil located on the rear butt wall of the body and an inlet - on its front wall. The invention ensures production of an installation convenient in operation, compact and with a high productivity at a high degree of purification of oils.

EFFECT: the invention ensures production of an installation convenient in operation, compact and with a high productivity at a high degree of purification of oils.

3 dwg

The invention relates to the production of asphaltenes by deasphalting of heavy oil and natural bitumen alkanes C5-C16or gasoline fractions

The invention relates to the preparation processes of oil refining, in particular to the separation of the oil particles, sand, water

The invention relates to the refining industry and can be used in the dehydration of oil sludge processing them into fuel oil

The invention relates to methods for dehydration of oil and oil products, gas condensate and liquid hydrocarbons and can be used in the chemical, gas processing, oil refining industry, in the preparation of oil and gas for transportation, as well as in other areas of technology to improve the quality of the oil content of the dispersed water

The invention relates to methods and devices for separating emulsions of immiscible liquids, particularly to separators-fasoracetam for vacuum distillation of crude oil, and may find applications in the refining, petrochemical, gas processing and other industries, while improving the environment

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: 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 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: 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, 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: 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: 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 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: 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

The invention relates to the oil industry, in particular to installations for the collection and preparation of oil and water, and can be used to separate emulsions

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

Up!