CN104998437B - A kind of system of oil-water separation - Google Patents
A kind of system of oil-water separation Download PDFInfo
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- CN104998437B CN104998437B CN201510432733.7A CN201510432733A CN104998437B CN 104998437 B CN104998437 B CN 104998437B CN 201510432733 A CN201510432733 A CN 201510432733A CN 104998437 B CN104998437 B CN 104998437B
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Abstract
This application discloses oil-water separation system, there is oil-water separation portion and water-handling portion would, wherein oil water mixture is separated into oil and middle water by oil-water separation portion, middle water enters water-handling portion would and is further separated into the miscellaneous and water of weight, oil water mixture is separated into light item and two branch roads of weight item by the rough segmentation cyclone in oil-water separation portion, the isolated heavy product of light item guides weight item branch road enrichment into, i.e. for light item, improves the efficiency of separation；For weight item, improve sharpness of separation, for light item, although sacrificing sharpness of separation, make part oil run out of from the first cyclone underflow, but whole light item only employs this one-level cyclone of the first cyclone in assorting room, does not has other cyclone to select and Hui Xuan again, the sorting of so light item is very simple, is easily controlled；And for weight item, the adjustability of the closed circuit Hui Xuan of second, third cyclone composition can overcome the race oil defect of light item, all solution is chosen to fall at closed circuit time all of sorting error.
Description
The present invention is the divisional application of patent of invention " a kind of oil-water separation method ", and the applying date of original application is on March 28th, 2014, and the application number of original application is 201410121534X, and the invention and created name of original application is " a kind of oil-water separation method ".
Technical field
The application relates to the system of a kind of oil-water separation, is specifically related to a kind of system utilizing gravity separation device to carry out oil-water separation.
Background technology
Cyclone is the conventional equipment in oil-water separation, and it has energy consumption advantage little, easy-operating.The most typical cyclone oil-water separation mainly has two kinds, and one is that profit is discharged from overfall by cyclone as light item, and weight is miscellaneous discharges from underflow, and light item carries out oil-water separation further.The shortcoming of this separation is, in actual sorting, because worrying that oil is run out of from underflow, therefore the discharge precision that weight is miscellaneous is reduced, make miscellaneous being sufficiently centrifuged of weight of a part enter overfall, and weight is miscellaneous very big for the damage of oil-water separation precision equipment, and this kind equipment will go out a certain item by clean cut separation in the first stage, have a strong impact on selected amount, made the setting that the sorting load of whole sorting flow process is uneven.Also having one is with cyclone rough segmentation water oil two, then weight two each segments in two branch roads, this sorting makes overall sorting flow process more smooth, but it is the longest that the shortcoming of this sorting is flow process, cyclone itself is the screening installation of a kind of adjustability difference, the sorting reliability of the longest entirety of flow process is the poorest, the simply efficient separation system of the most a set of flow process.
It addition, the impact of environment be can not be ignored by oil-water separation, middle water and the miscellaneous process of weight are difficult problems; this relates generally to be separated from the water the ability that weight is miscellaneous; in prior art, weight is miscellaneous is separated from water or low precision, or needs to shut down cleaning, it is impossible to realize online non-stop-machine continuous production.
Summary of the invention
It is an object of the invention to provide a kind of oil-water separation method, solve the defect of oil-water separation in aforesaid prior art.
The present invention realizes by the following method: oil water mixture is first separated into oil and middle water by oil-water separation radical, middle water enters water-handling portion would and is further separated into the miscellaneous and water of weight, it is characterized in that, oil-water separation portion uses rough segmentation cyclone that oil water mixture is separated into light item and two branch roads of weight item, the light isolated heavy product of item guides weight item branch road enrichment, and water in the middle of water-handling portion would continuous processing into.
More preferably, oil-water separation portion mainly includes rough segmentation cyclone and first, second and third cyclone, oil water mixture is carried out rough segmentation by rough segmentation cyclone, in stock solution, the oil of 70%-75% enters overflow enter the first cyclone, and underflow introduces being connected of the second servo loop that the second cyclone, the entrance of rough segmentation cyclone and the underflow of three cuff technique separate, the overflow that rough segmentation cyclone is separated and two big branch roads of underflow, the lightest item and two branch roads of weight item, for light item, improve the efficiency of separation；For weight item, improve sharpness of separation.
More preferably, the described raising efficiency of separation the specially first cyclone design is the purity ensureing overfall oil, the water of the overwhelming majority and the oil of a part enter underflow, it is provided with charger at the first cyclone inlet, the overflow of the first cyclone enters three-phase Gravity Separation machine, three-phase Gravity Separation machine utilizes the triangular gravity of gas, oil, water different with density and layering occurs, separating three-phase, the gas that charger is filled with is discharged from air vent after being floated up from aqueous phase by oil in three-phase Gravity Separation machine.
More preferably, described improve sharpness of separation be the second cyclone be the cyclone of purity design based on overfall oil, the underflow of rough segmentation cyclone and the first cyclone enters the second cyclone, separated, second cyclone overflow is that high-purity oil enters three-phase Gravity Separation machine, underflow be sub-fraction oil and the overwhelming majority water, weight the most miscellaneous, underflow enters three cuff technique；Three cuff technique underflow occurs without oil, the overflow of three cuff technique is filled and is perhaps occurred that more water mixes and return to the arrival end of the second cyclone with oil, overfall and underflow opening at three cuff technique are all provided with detecting devices, two detecting devices are connected with detector, the overfall of three cuff technique and underflow opening are additionally provided with the first control valve and the second control valve, underflow also has the first loop to direct water towards the entrance of three cuff technique, also there is second servo loop and direct water towards the entrance of rough segmentation cyclone, when the underflow of three cuff technique be detected equipment Inspection go out to have oil to run out of time, second control valve is to underflow current limliting, water is forced to overfall, 3rd control valve in the first loop is opened simultaneously, to the entrance moisturizing of three cuff technique, also it is the process of supercharging simultaneously, oil in three cuff technique moves to overfall more fully；If too many water occurs in the overfall of three cuff technique, illustrating to there is not the problem running oil in underflow, at this moment the first control valve current limliting, forces out underflow opening by water, it is ensured that in overflow, oil is controlled with the ratio of water.
More preferably, water-handling portion would includes three groove trash separators, it is made up of the first to three groove, the aqueous phase of three-phase Gravity Separation machine and the underflow mixing of three cuff technique enter the first-stage tank of three groove trash separators by first-stage tank entrance, the exit normal of first-stage tank entrance is downward, the port of export has shunting disk, shunting disk is the horizontally disposed disk with radial curved grooves, current under the guiding of shunting disk by curved grooves slow after enter first-stage tank, first-stage tank is subsider, bottom first-stage tank during impurities removal, first-stage tank water level decreasing also goes out impurity discharging port by miscellaneous for weight；It is connected by one-way pump between first-stage tank with second-level groove, one-way pump pumps clear liquor from first-stage tank outlet to second-level groove entrance, it is tiltedly installed with sieve structure between the second-level groove entrance of second-level groove and second-level groove outlet, it it is a two-way pump structure between second-level groove and three grades of grooves, water after two-way pump structure will filter also has impurity discharging port by second-level groove outlet pump to three grades of groove entrances, second-level groove.
nullMore preferably，Second-level groove near exit is provided with impeller，During second-level groove outlet reverse drainage, impeller raises backward erosion compass screen surface by waterborne，When water processes，Water after two-way pump structure will filter passes through second-level groove outlet pump to three grades of groove entrances，When compass screen surface blocks，Compass screen surface can increase due to the effect deflection of hydraulic pressure，The water-head of compass screen surface both sides also can become big，Utilize compass screen surface deflection and/or compass screen surface both sides water level difference to judge whether compass screen surface blocks，When testing agency finds that compass screen surface blocks，Two-way pump structure reversing pump water，The water of three grades of grooves is reversely fed second-level groove，The little granule at compass screen surface is blocked by compass screen surface reverse cleaning being acted on discharge，Little granule glides and discharges from the impurity discharging port of second-level groove with current，During second-level groove outlet reverse drainage, waterborne raising is washed away compass screen surface by impeller，In the impurities removal stage，The work of one-way pump does not stop，The water of second-level groove entrance ejection forms combined-flow with the water of second-level groove outlet ejection，Combined-flow disturbance is stronger，Preferably discharge little granule.
Beneficial effect:
1) the application proposes an important sorting principle, i.e. for light item, improves the efficiency of separation；For weight item, improve sharpness of separation, and carried out relative arrangement according to this principle.For light item, although sacrificing sharpness of separation, part oil is made to run out of from the first cyclone underflow, but whole light item only employs this one-level cyclone of the first cyclone in assorting room, the cyclone not having other selects and Hui Xuan again, the sorting of so light item is very simple, is easily controlled；And for weight item, the adjustability of the closed circuit Hui Xuan of second, third cyclone composition can overcome the race oil defect of light item, all solution is chosen to fall at closed circuit time all of sorting error, operator only need simply to adjust arbitrary rank cyclone number of closed circuit time choosing part, greatly reduce the layout difficulty of cyclone；
2) choosing for closed circuit time in the application, the overfall of three cuff technique and underflow are equipped with detecting devices, by the control of detector, can be accurately controlled the discharge of underflow, it is achieved the dynamic adjustment of separation operation；
3) present application addresses the process difficult problem for water middle in continuous oil-water separation operation, the three groove trash separators that inventor proposes utilize the judgement to compass screen surface stopping state, backward erosion compass screen surface, it is achieved that Hand scarf compass screen surface, provides sound assurance for oil-water separation portion.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oil-water separation system；
In figure: 1, rough segmentation cyclone；2, abundant equipment；3, the first cyclone；4, three-phase Gravity Separation machine；5, the second cyclone；6, three cuff technique；7, detector；8, the first control valve；9, the second control valve；10, the 3rd control valve；11, three groove trash separator；12, first-stage tank entrance；13, first-stage tank outlet；14, one-way pump；15, second-level groove entrance；16, second-level groove outlet；17, two-way pump structure；18, three grades of groove entrances；19, sieves；20, impurity discharging port.
Detailed description of the invention
It is described further below in conjunction with the accompanying drawings:
nullOil-water separation portion in the present embodiment is mainly made up of rough segmentation cyclone 1 and the first to three cuff technique，Oil mixing with water stock solution is carried out rough segmentation by rough segmentation cyclone 1，The operation of cyclonic separation is also had owing to overflow is follow-up，So the overflow of rough segmentation cyclone to be not oil the purest more good，Mobility and separability in view of overflow，It is preferably the oil of 70%-75% in stock solution enter overflow item and enter the first cyclone 3，Remaining oil、Water and major part weight miscellaneous entrance underflow introduce the second cyclone 5，If the most unilateral purity pursuing rough segmentation cyclone 1 overflow，This oil because the thickest and cannot cyclonic separation again，And the selected amount of whole piece-rate system is substantially reduced，Therefore the separation theory in the application is thought，In the cyclonic separation of initial one-level，Should not be directly separated fuel-displaced or weight is miscellaneous，But rough segmentation oil water mixture，The task of segmentation is placed on subsequent treatment.The water management of the second servo loop that the inlet pressure of rough segmentation cyclone 1 and flow are separated by the end i.e. underflow of three cuff technique in whole oil-water separation portion, three cuff technique is described later, if it is relatively low that rough segmentation cyclone 1 is selected in pressure, then improve pressure by moisturizing thus increase the oil mass entering overflow.The overflow separated for rough segmentation cyclone 1 and two big branch roads of underflow, i.e. light item and weight item, the application proposes an important sorting principle, i.e. for light item, improves the efficiency of separation；For weight item, improve sharpness of separation.And carry out following equipment layout according to this principle.
First cyclone 3 is designed to ensure that the purity of overfall oil, the so water of the overwhelming majority and oil of a part enters underflow, it is preferably provided with charger 2 in the first cyclone 3 porch, the practical operation of sorting finds, gas in cyclone when overfall eddy current catch end is close, oil droplet is had the strongest impetus, it is possible to help to collect oil droplet.First cyclone is in order to ensure the efficiency separated, sacrifice the precision of sorting in a way, there is a certain degree of race oil, but for the lightest item of overflow item that rough segmentation cyclone 1 is separated, have only to once sort the purity ensuring that oil, it contains a small amount of water, it is practically free of weight miscellaneous, this is a kind of well protection to follow-up three-phase Gravity Separation machine 4 and other accurate screening installation, the eddy flow the most only having carried out first this one-level of cyclone 3 shunts the sorting standard just having reached high, centre does not has loop gravity treatment, there is no the selected cyclone of multistage layout, this substantially reduces sorting flow process, improve the efficiency of separation.Three-phase Gravity Separation machine 4 is prior art, utilize the triangular gravity of gas, oil, water different with density and layering occurs, separating three-phase, the gas that charger 2 is filled with is discharged from air vent after being floated up from aqueous phase by oil in three-phase Gravity Separation machine.
Second cyclone 5 is also based on the cyclone of the purity design of overfall oil, the underflow of rough segmentation cyclone 1 and the first cyclone 3 enters the second cyclone 5, separated, second cyclone 5 overflow is that high-purity oil enters three-phase Gravity Separation machine 4, underflow be sub-fraction oil and the overwhelming majority water, weight the most miscellaneous, underflow enters three cuff technique 6.Three cuff technique 6 is designed to ensure that in underflow and occurs without oil, for this, relax the requirement of the overflow of three cuff technique 6 as far as possible, can there is more water and return to the arrival end of the second cyclone 5 in the overflow of three cuff technique 6, owing to the underflow of three cuff technique 6 is intended to be directly entered three groove trash separators of water treatment stage, therefore tightened up requirement is wanted in the underflow for three cuff technique 6, overfall and underflow opening at three cuff technique 6 are all provided with detecting devices, two detecting devices are connected with detector 7, the overfall of three cuff technique 6 and underflow opening are additionally provided with the first control valve 8 and the second control valve 9, underflow also has the first loop to direct water towards the entrance of three cuff technique 6, also there is second servo loop and direct water towards the entrance of rough segmentation cyclone 1.
When the underflow of three cuff technique 6 be detected equipment Inspection go out to have oil to run out of time, second control valve 9 is to underflow current limliting, water is forced to overfall, 3rd control valve 10 in the first loop is opened simultaneously, to the entrance moisturizing of three cuff technique 6, also being the process of supercharging, the oil in three cuff technique 6 moves to overfall more fully simultaneously.If there is too many water in the overfall of three cuff technique 6, illustrate underflow does not exist the problem running oil, it is the operating pressure that in overflow, water increases the second cyclone 5 too much on the contrary, overall sorting capability declines, at this moment the first control valve 8 current limliting, water is forced out underflow opening, it is ensured that in overflow, oil is controlled with the ratio of water.Detector 7 and detecting devices itself are prior aries, do not repeat them here；It is emphasized that, for oil-water separation field, the component ratio of mixed flow to be divided is stable, therefore for detector 7, it is also possible to artificial sampling detects, this can't pay the artificial of bigger amount.
The underflow of the 3 of rough segmentation cyclone 1 and the first cyclone selects the high-precision You Heshui that separated of structure for closed circuit time through what the 2nd three cuff technique formed, and introduces detector 7, more ensure that the reliability of oil-water separation.All in all oil-water separation part, overflow for rough segmentation cyclone 1 uses high efficiency oil-water separation, and the cyclone of the underflow of rough segmentation cyclone 1 underflow Yu the first cyclone be mixed feeding second and three cuff technique composition selects structure for closed circuit time, by the sorting across branch road, formed and focus on efficiency and focus on the sorting of separation accuracy mixed principle.In actual oil-water separation, we are important to notice that the production capacity of valuable oil, oil yield is basically unchanged for oil well, for this, we reduce the complicated layout to light item branch road, all of sorting error is all concentrated on weight item branch road, the group number of cyclone closed circuit Hui Xuan can be increased or decreased according to the actual needs, second can also be adjusted according to production capacity, the respective number of three cuff technique, focus for whole production is focused only on weight item branch road, and this branch road also introduces the detector 7 automatically controlled, reduce further the difficulty of control, closed-loop path for the 2nd three cuff technique composition, simply the overfall of the second cyclone and the underflow of three cuff technique are paid close attention to, overflow for three cuff technique is general concern, it is only the auxiliary detection for underflow discharge.Closed-loop path does not use the cyclone composition loop of three grades or more than three grades to select system again, this is because as previously described, cyclone is the screening installation of a kind of adjustability difference, and cyclone level can affect what sharpness of separation last too much, it is sometimes desirable to uses pump class to ensure selected pressure.So the application is only with the closed circuit Hui Xuan of the cyclone composition of two-stage, and it is furnished with detector 7, it is also possible to the quantity of the cyclone of any one-level is adjusted, thus is suitable for the sorting of the oil water mixture of different moisture content.
Owing to producing continuously of oil-water separation portion causes an important technical problem, i.e. create the substantial amounts of middle water miscellaneous containing weight, standard according to China's mining industry draining, this kind of water cannot directly discharge, it is thus desirable to one can produce continuously, oil-water separation portion is supported by water treatment system that disposal ability is big, the most whole oil-water separation system just cannot run normally.To this end, inventor proposes three groove trash separators 11, effectively solve this technical problem.
Three groove trash separators 11 are made up of the first to three groove, the aqueous phase of three-phase Gravity Separation machine 4 and the underflow mixing of three cuff technique together enter the first-stage tank of three groove trash separators 11 by first-stage tank entrance 12, the exit normal of first-stage tank entrance 12 is downward, the port of export has water flow speed reduction device, water flow speed reduction device is preferably shunting disk, shunting disk is the horizontally disposed disk with radial curved grooves, and current, under the guiding of shunting disk, enter back into first-stage tank slowly by curved grooves.First-stage tank is subsider, and the higher degree of depth is arranged at the weight miscellaneous bottom being deposited in first-stage tank as far as possible, preferably first-stage tank, and bottom first-stage tank during impurities removal, first-stage tank water level decreasing also goes out impurity discharging port by miscellaneous for weight.It is connected by one-way pump 14 between first-stage tank with second-level groove, one-way pump 14 pumps clear liquor from first-stage tank outlet 13 to second-level groove entrance 15, it should be noted that first-stage tank outlet 13 should be away from first-stage tank entrance 12, prevent current short circuit from crossing first-stage tank and be directly entered second-level groove, so that first-stage tank lost efficacy.It is tiltedly installed with sieve structure between the second-level groove entrance 15 of second-level groove and second-level groove outlet 16, sieve structure is for removing the little granule of easily suspension, but sieve structure has one disadvantage in that needs periodic cleaning exactly, sort short grained compass screen surface and be different from other compass screen surface, little granule is very easy to block in sieve aperture rather than glides along compass screen surface discharges, if mesh is blocked to a certain extent in prior art, just must shut down cleaning or change compass screen surface, this cannot adapt to aforesaid oil-water separation part, certainly the most also have and little granule not processed and directly to discharge, it is only that bulky grain or similar easy recovery section are reclaimed, but plant area's surrounding enviroment are caused huge pressure by this.
nullIn order to solve this technical problem，It the present embodiment is a two-way pump structure 17 between second-level groove and three grades of grooves，When water processes，Water after two-way pump structure 17 will filter exports 16 pumps to three grades of groove entrances 18 by second-level groove，When compass screen surface blocks，Compass screen surface can increase due to the effect deflection of hydraulic pressure，The water-head of compass screen surface both sides also can become big，Skilled person will appreciate that dawn is，Can utilize including but not limited to deflection and water level difference to judge whether compass screen surface blocks，When testing agency finds that compass screen surface blocks，Two-way pump structure reversing pump water，The water of three grades of grooves is reversely fed second-level groove，The little granule at compass screen surface is blocked by compass screen surface reverse cleaning being acted on discharge，Little granule glides and discharges from the impurity discharging port 20 of second-level groove with current，Preferably export in second-level groove and at 16, be provided with impeller，When second-level groove exports 16 reverse drainage, waterborne raising is washed away compass screen surface by impeller.In the impurities removal stage, the work of one-way pump 14 does not stop, and the water of second-level groove entrance 15 ejection forms combined-flow with the water of second-level groove outlet 16 ejection, and combined-flow disturbance is relatively strong, preferably discharges little granule.Therefore, being no matter that water processes or the impurities removal stage, whole three groove trash separators operates always, and for the continual process of middle water in oil-water separation stage, the needs shutdown of solution is the most miscellaneous or changes the technical barrier of compass screen surface.
Although the disclosed oil-water separation method related to being particularly described with reference to embodiment; embodiments described above is illustrative and not restrictive; without departing from the present invention, all of change and modifications all within protection scope of the present invention.
Claims (1)
1. the system of an oil-water separation, there is oil-water separation portion and water-handling portion would, it is characterised in that oil-water separation portion uses the overflow of rough segmentation cyclone (1) to be light item branch road, the underflow of the overflow of rough segmentation cyclone (1) is attached most importance to a branch road, and the isolated heavy product of light item guides weight item branch road enrichment into；
Oil-water separation portion includes rough segmentation cyclone (1) and first, second and third cyclone, the overflow pipe of rough segmentation cyclone and the first cyclone (3) connection, the underflow pipe of rough segmentation cyclone and the connection of the second cyclone,
Second cyclone overflow pipe connects three-phase Gravity Separation machine, and the second cyclone underflow pipe connects three cuff technique (6)；Three cuff technique (6) overflow pipe connects the arrival end of the second cyclone (5), overfall and underflow opening at three cuff technique are all provided with detecting devices, two detecting devices are connected with detector (7), the overfall of three cuff technique is additionally provided with the first control valve (8), the underflow opening of three cuff technique is additionally provided with the second control valve (9), the underflow opening of three cuff technique also has the first loop to direct water towards the entrance of three cuff technique, also has second servo loop and directs water towards the entrance of rough segmentation cyclone (1)；
The overflow of the first cyclone (3) is connected with three-phase Gravity Separation machine, the underflow opening of three cuff technique is connected with three-phase Gravity Separation machine, first cyclone design is the purity ensureing overfall oil, the water of the overwhelming majority and the oil of a part enter underflow, second cyclone is the cyclone of purity design based on overfall oil, occurs without oil in three cuff technique underflow.
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| CN108828174A (en) * | 2018-07-09 | 2018-11-16 | 南京航空航天大学 | Oil component detection device and method in water |
| CN111537383B (en) * | 2020-05-15 | 2021-11-16 | 吉林省泰斯特生物电子工程有限公司 | Granular impurity separable detection device and method for sewage detection |
| CN112483475A (en) * | 2020-11-11 | 2021-03-12 | 中建四局安装工程有限公司 | Intelligent sewage disposal protection device for submersible pump |
| CN116674827B (en) * | 2023-08-03 | 2023-10-03 | 常州市星云润滑材料有限公司 | Conveying device for polyethylene wax production |
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| CN200973993Y (en) * | 2006-11-07 | 2007-11-14 | 何公亮 | Swirl oil cut-off device |
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| Publication number | Publication date |
|---|---|
| CN104984566B (en) | 2017-01-11 |
| CN104984566A (en) | 2015-10-21 |
| CN105148570B (en) | 2016-12-07 |
| CN104998437A (en) | 2015-10-28 |
| CN105148570A (en) | 2015-12-16 |
| CN103830934B (en) | 2015-09-02 |
| CN103830934A (en) | 2014-06-04 |
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Effective date of registration: 20201126 Address after: No.8, Qiaoxing Road, Yunxiao County, Zhangzhou City, Fujian Province Patentee after: Yunxiao Food Inspection Center Address before: 324000 Zhejiang city of Quzhou province Quzhou green industrial agglomeration area WITHUB industrial design Industrial Park triumph Road No. 6 Building 2 3-207 Patentee before: QUZHOU YIFAN DESIGN Co.,Ltd. |
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Application publication date: 20151028 Assignee: Yunxiao County Quality Metrology Inspection and Testing Institute Assignor: Yunxiao Food Inspection Center Contract record no.: X2023980052303 Denomination of invention: A system for oil-water separation Granted publication date: 20170104 License type: Common License Record date: 20240205 |