Horizontal settling tank for separating oil-water emulsions
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 device contains a horizontal settling tank, the input and output connections, the output device is an intermediate layer in the form of solid metal camera, fitted with a circulation holes that overlap the spring-loaded valves. The pistons of the pneumatic cylinders are installed perpendicular to the holes inside the chamber and rigidly fixed racks to its walls. The pistons are driven by air pressure from the compressor. The technical result consists in simplifying the design and improving reliability. 1 Il. 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.There are various types of horizontal tanks (see kN. Loutskina, S. "the Collection and preparation of oil, gas and water transport". M., Nedra, 1972, S. 195). The use of known horizontal clarifiers allows mainly to solve the problem Podgainy device to output the intermediate layer.To maintain the normal process mode of operation for the preparation of oil usually persistent intermediate layers of these tanks periodically or continuously discharged into the oil trap or specially allocated for this purpose the vessel where they are stored for a long time and which, after additional processing of the demulsifier back in the "head" of the technological process of oil treatment. And this in turn leads to periodic deterioration of the quality of produced oil.The presence in the oil emulsion iron sulfide and other solids, and nedorazvdannoe fine part of the emulsion leads to the formation and accumulation in the sump intermediate interfacial layer, representing a stable and complex dispersed system, which prevents the separation of produced water and oil. The presence in the composition of the oil emulsion iron sulfide not only complicates the process of demulsification, but also causes increased corrosion horizontal clarifiers and communications, as well as increases the amount of oil waste oil treatment plants. All of this requires additional material costs as the evil in the result to the present invention is a horizontal settling tank (see patent RU 1820840, 01 D 17/04 "Apparatus for joint training of oil and water", publ. B 21, 1993), containing a capacitor, the input and output connections, the output device is an intermediate layer, and a device for outputting the intermediate layer consists of two partitions, attached obliquely to the walls of the vessel with the formation of a camera and made of sections located at a distance from one another, each section is equipped with the axis of the counterweight and flap, made with the possibility of overlap of the distance between the partition walls. The sump is equipped with a hydraulic support-lift mounted for movement from horizontal to inclined and provided with a blowing device located between the partitions.The known device for the preparation of oil provides for the conclusion of the intermediate layer from the settling tank at its inclined position by blowing, for example, oil and gas.A disadvantage of the known device is that the tank must be permanently fixed water level. The change in water level will lead to the displacement of the intermediate layer, which cannot be captured by the device to output the intermediate layer.Nedostupnogo when lifting the tank, as the sump requires a lifting device for blowing the intermediate layer when its tilted position.In addition, to raise the sump (oil treatment plants are used in most large tanks with a volume of 200 m3in the downward position the need for special lifting devices, which are complex and expensive, requiring special maintenance.The aim of the invention is the reduction of material costs, how to prepare the oil, and technological processes associated with the output of the intermediate layer from the settling tank for separating oil-water emulsions by simplifying the design of the sump and improve reliability.This goal is achieved by the described horizontal settling tank for separating oil-water emulsions, comprising a housing, input and output connections, as well as a device for outputting an intermediate layer.What's new is that the output device is an intermediate layer made of solid metal camera, rigidly fixed to the horizontal walls of the tank and located along the inner generatrix, outside of the zone of turbulent flow, when eaname when forward movement of the pistons of pneumatic cylinders installed perpendicular to the circulation holes inside the metal chamber and rigidly fixed racks to its walls, and pistons are driven by the air pumped by the compressor.From available sources, the patent and scientific literature we are not aware of the claimed set of distinctive features. Therefore, the proposed device meets the criterion of "significant differences".The drawing shows a schematic section of a horizontal tank with a device to output an intermediate layer.The device contains a horizontal settling tank 1 for separating oil-water emulsions, input 2 and output 3, 4, 5 nozzles, a device 6 for outputting the intermediate layer 7 made in the form of solid metal camera, rigidly fixed to the horizontal walls of the tank 1 and is located along the inner generatrix, outside of the zone of turbulent flow, with a solid metal chamber 6 from the bottom and the top is fitted with a circulation hole 8, which overlap the spring-loaded valve 9 when the translational movement of the pistons 10 of the pneumatic cylinder 11, installed perpendicular to the circulation holes 8 within the e by air pressure, pumped by the compressor 13.The principle of operation of the device combined with the way of specific performance.For example, water-oil emulsion density 940 kg/m3and a temperature of 10oWith and entered into the reagent-demulsifier is fed through pipe 2 into the lower portion of the horizontal sedimentation tank 1 under layer separated produced water 14. Oil under gravity passes through the lower and upper circulation hole 8 in the upper part of the horizontal sedimentation tank 1 and is derived from it through pipe 3, and the separated produced water 14 is accumulated in the lower part of the horizontal sedimentation tank 1 and is continuously discharged through the pipe 4. The level of separated water is controlled by means of automation and rests on the bottom plane of the device 6 for outputting the intermediate layer 7.Over time, accumulating the intermediate layer 7 reduces the efficiency of horizontal settling tank 1. To output the intermediate layer 7 first overlap circulation hole 8 spring-loaded valve 9 by supplying air pressure through air line 15 with the aid of the compressor 13. Upon completion overlapping circulation hole 8 opens the check valve 16, and isntalling sedimentation tank 1 compressor 13 is turned off and closes the check valve 16, preventing the escape of exhaust fluid in the compressor 13, and the stretching of a spring (not shown) that are installed inside the pneumatic cylinder 11 as a mechanism of reverse action, open, returning the valve 9 to its original position, while the circulation hole 8 is opened and restored normal operation horizontal sedimentation tank 1.Technical and economic efficiency of the proposed horizontal settling tank for separating oil-water emulsion is formed by simplifying its structure, as well as improve the reliability of its operation and continuity of the technological process of separating oil-water emulsions, i.e., the proposed design of the sump is relatively simple, reliable and convenient in operation. This significantly reduces the time of process operation and reduced labor intensity when conducting this process, and improves the safety of personnel and reduced material costs of producing oil.Due to the design of horizontal settling tank for separating oil-water emulsions the possibility of the intermediate layer in the product oil is excluded.
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.
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.
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.
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.
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.
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.
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.
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