CN102626560B - Rotational flow air flotation oil-water separation device and air flotation generator - Google Patents
Rotational flow air flotation oil-water separation device and air flotation generator Download PDFInfo
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- CN102626560B CN102626560B CN201210122331.3A CN201210122331A CN102626560B CN 102626560 B CN102626560 B CN 102626560B CN 201210122331 A CN201210122331 A CN 201210122331A CN 102626560 B CN102626560 B CN 102626560B
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Abstract
The invention discloses a rotational flow air flotation oil-water separation device and an air flotation generator. The rotational flow air flotation oil-water separation device comprises one or a plurality of cylindrical rotational flow tubes and a vertical type cylindrical air flotation device. The cylindrical rotational flow tube comprises a swirling flow cavity, a horizontal tangential liquid inlet pipe, an overflow outlet pipe, and an underflow outlet pipe. The vertical type cylindrical air flotation device comprises an air flotation cylinder body, a horizontal side inlet pipe, a clear water outlet pipe, a gas outlet pipe, an oil outlet pipe, a liquid spiral flow deflector, and the air flotation generator. The principle of high-speed rotational flow and the effect of bubble absorption are used comprehensively in the invention. The whole process is conducted in a flowing state. The rotational flow air flotation oil-water separation device and the air flotation generator of the invention are applicable to onshore and offshore oil production platforms, and have a good industrial application prospect.
Description
Technical field
The profit two-phase mixed liquor separation field that the present invention relates to petrochemical field, relates in particular to a kind of cyclone air-flotation oily-water seperating equipment and air supporting generator.
Background technology
In oil exploitation or refining process, conventionally oil, water mixed liquid need to be required to carry out separation according to certain technological requirement or environmental protection index, oily water separating equipment is important production equipment.At present, along with the deep exploitation of land and offshore oilfield, the moisture content of most of oilfield produced fluid increases gradually, usually can reach the more than 80% of production fluid amount, and some oil fields are even up to more than 90%.The continuous growth of production fluid treating capacity, causes original profit treatment facility in oil field to be difficult to meet existing requirement, and along with the improving constantly of national environmental standard, further the profit treatment process of original oil field design is proposed to severe challenge.
Current, for the separation method of profit two-phase mixed liquor, mainly contain gravitational settling, rotating centrifugal separation, air supporting choosing, filtration separated with film etc.Patent publication No.: CN2569538Y for example, high efficiency oil/water separator, description be a main separator that adopts Gravity Separation principle; Patent publication No.: CN201817338U, oily waste water treatment machine, the oily-water seperating equipment mainly being formed by the reversible fiber ball filter of swash plate, walnut shell filter and parents; Patent publication No.: CN2308435Y, oily-water seperating equipment, the application of this patent Shi You Ecological Environment Research Center, Chinese Academy of Sciences, the oily-water seperating equipment that adopts the technology such as film pervasion evaporation, centrifugal, suction and negative pressure cleaning to combine, flow through under the driving of the pump hydrophilic hollow fibre of helical form coiling of oil mixing with water liquid, by effects such as pressure, centrifugal and suctions, make water-oil separating, by valve, changed the negative pressure cleaning that also can realize film.Utilizing the technology such as gravity principle and filtration is all effective isolation technics means, but inadequate to the processing degree of depth of oil-water mixture, processing speed is relatively slow again, therefore causes device structure complicated, bulky.
Rotating centrifugal isolation technics is to utilize the density contrast between medium to carry out centrifugation.Density contrast between separated medium is larger, and the grain diameter of decentralized photo is larger, and separating effect is just better.Patent publication No.: CN2256338Y discloses the immiscible oil-water mixed liquid pre-separation hydrocyclone of a kind of oil field two-phase, and simple in structure, volume is little, and floor space is few, but due to tangential strong rotational-flow shearing effect, the tiny oil droplets of generation is difficult to separation.
The disclosure of the invention of patent publication No.: CN101417184A a kind of gas floatation separation device, do not need to increase external enwergy purging system, can realize the target of long-term continuous and steady operation, guaranteed that microbubble as much as possible removes to adhere to small particle diameter dispersed oil, but this device is only applicable to the oil-polluted water of low concentration, and range of application is narrower.
Summary of the invention
The object of the invention is the deficiency for above processing method, proposed a kind of cyclone air-flotation oily-water seperating equipment and air supporting generator, it is simple in structure, and volume is little, applied widely.
In order to address the above problem, the invention provides a kind of cyclone air-flotation oily-water seperating equipment, comprising: one or more column type cyclone pipe and the vertical cartridge type air-floating apparatus being connected with described column type cyclone pipe, wherein:
Described column type cyclone pipe comprises eddy flow cavity, horizontal tangential feed tube, overflow outlet and underflow outlet; Described horizontal tangential feed tube is connected with the upper end of described eddy flow cavity, and described overflow outlet is connected with the top of described eddy flow cavity, and described underflow outlet is connected with the lower end of described eddy flow cavity;
Described vertical cartridge type air-floating apparatus comprises air supporting cylindrical shell, horizontal side feed tube, clear water output pipe, gas outlet tube, oil export pipe, liquid spiral flow deflector and air supporting generator; One end of described horizontal side feed tube is connected with the side of described air supporting cylindrical shell, and the other end is connected with described underflow outlet; Described clear water output pipe is connected with the bottom of described air supporting cylindrical shell, and described gas outlet tube is connected with the top of described air supporting cylindrical shell; Described rich oil outlet is connected with the upper end of described air supporting cylindrical shell; Described liquid spiral flow deflector is connected with described horizontal side feed tube; Described liquid spiral flow deflector and air supporting generator are positioned at the inside of described air supporting cylindrical shell.
Preferably, said apparatus also has following characteristics:
The entrance of described horizontal tangential feed tube is circular, and the outlet of described horizontal tangential feed tube is square, and described outlet is connected with tangential manner with described eddy flow cavity, and the cross section that described horizontal tangential feed tube is connected with described eddy flow cavity is rectangle.
Preferably, said apparatus also has following characteristics:
The spacing on the pipe center line of described horizontal tangential feed tube and the top of described eddy flow cavity is 1～2 times of internal diameter of described eddy flow cavity; Described underflow outlet is positioned at the other end away from described horizontal tangential feed tube of described eddy flow cavity, and the pipe center line of described underflow outlet and the bottom spacing of described eddy flow cavity are 0.5～1 times of internal diameter of described eddy flow cavity.
Preferably, said apparatus also has following characteristics:
Described liquid spiral flow deflector extends downwards with 5 °～10 ° scopes, and itself and air supporting cylindrical shell wall intersecting lens central angle scope of projection on horizontal plane are 90 °～135 °, and the width of described liquid spiral flow deflector is greater than the caliber of horizontal side feed tube.
Preferably, said apparatus also has following characteristics:
Described air supporting inner barrel is also provided with liquid level emasuring device; Described overflow outlet, underflow outlet, clear water output pipe, gas outlet tube and oil export pipe place are provided with valve.
Preferably, said apparatus also has following characteristics:
Described air supporting generator fixes by the lower end of four connecting rods and described air supporting cylindrical shell, described air supporting generator comprises nanometer film structure, gauze pad support, air inlet baffle plate, comes tracheae and air storing cavity, describedly come tracheae to be connected with the bottom surface of air storing cavity, described gauze pad support be positioned at described air storing cavity above, on described gauze pad support, be fixed with described nanometer film structure; Described air inlet baffle plate is arranged on the described junction of coming tracheae and air storing cavity.
Preferably, said apparatus also has following characteristics:
19 of logical circles that have diameter on described gauze pad support and be 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing described nanometer film structure.
Preferably, said apparatus also has following characteristics:
Described nanometer film structure comprises fixedly snap ring, upper and lower nanometer film support and nanometer film; Described nanometer film is fixed in the middle of described upper and lower nanometer film support, and on described upper and lower nanometer film support, having diameter is 168～448 of the through holes of 3～5mm, and described fixedly snap ring is fixed on described nanometer film structure on described gauze pad support by bolt.
In order to address the above problem, the invention provides a kind of air supporting generator, comprise nanometer film structure, gauze pad support, air inlet baffle plate, come tracheae and air storing cavity, describedly come tracheae to be connected with the bottom surface of air storing cavity, described gauze pad support be positioned at described air storing cavity above, on described gauze pad support, be fixed with described nanometer film structure; Described air inlet baffle plate is arranged on the described junction of coming tracheae and air storing cavity.
Preferably, above-mentioned air supporting generator also has following characteristics:
19 of logical circles that have diameter on described gauze pad support and be 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing described nanometer film structure.
Preferably, above-mentioned air supporting generator also has following characteristics:
Described nanometer film structure comprises fixedly snap ring, upper and lower nanometer film support and nanometer film; Described nanometer film is fixed in the middle of described upper and lower nanometer film support, and on described upper and lower nanometer film support, having diameter is 168～448 of the through holes of 3～5mm, and described fixedly snap ring is fixed on described nanometer film structure on described gauze pad support by bolt.
The present invention has fully utilized high-speed rotational principle and bubble suction-operated, and whole flow process is carried out in flowing.By column type cyclone pipe, come liquid to carry out pretreatment oil mixing with water, then the sewage of low oil-containing is carried out in air supporting cylinder to air supporting effect, can further reduce the oil content in water, reach state sewage emission standard.Apparatus and method volume of the present invention is little, lightweight, treatment effeciency is high, to coming liquid parameter adaptation scope wide, overcome the inefficiency problem that traditional gravity is processed, avoided filtration processing equipment bulky and while adopting eddy flow principle tiny olesome process problem, the secondary pollution and the Cost Problems that do not exist chemical demulsification to cause.These separated apparatus and method are a kind of raising separative efficiencies, improve isolation technics, alleviate the effective way of separator device weight, are suitable for land and offshore production platform use, have good prospects for commercial application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cyclone air-flotation oily-water seperating equipment of the embodiment of the present invention;
Fig. 2 is the structural representation of the air supporting generator of the embodiment of the present invention;
Fig. 3 is the structural representation of the nanometer film structure of the embodiment of the present invention.
The specific embodiment
Hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can be combined mutually.
A kind of cyclone air-flotation oily-water seperating equipment of the embodiment of the present invention, comprises one or more column type cyclone pipes 1 and vertical cartridge type air-floating apparatus 2, as shown in Figure 1.
Column type cyclone pipe 1 comprises horizontal tangential feed tube 3, overflow outlet 4, eddy flow cavity 5 and underflow outlet 6.Described horizontal tangential feed tube 3 is connected with the upper end of described eddy flow cavity 5, and described overflow outlet 4 is connected with the top of described eddy flow cavity 5, and described underflow outlet 6 is connected with the lower end of described eddy flow cavity 6.
Cartridge type air-floating apparatus 2 comprises air supporting cylindrical shell 30, horizontal side feed tube 7, liquid spiral flow deflector 21, air supporting generator 12, clear water output pipe 14, liquid level emasuring device 16, gas outlet tube 18, oil export pipe 20.One end of described horizontal side feed tube 7 is connected with the side of described air supporting cylindrical shell 30, and the other end is connected with described underflow outlet 6; Described clear water output pipe 14 is connected with the bottom of described air supporting cylindrical shell 30, and described gas outlet tube 18 is connected with the top of described air supporting cylindrical shell 30; Described rich oil outlet 20 is connected with the upper end of described air supporting cylindrical shell 30; Described liquid spiral flow deflector 21 is connected with described horizontal side feed tube 7; Described liquid spiral flow deflector 21 and air supporting generator 12 are positioned at the inside of described air supporting cylindrical shell 30.
In this article, " upper end " refers near top, and " lower end " refers at bottom end vicinity.
The horizontal tangential feed tube 3 of described column type cyclone pipe 1 has the transition that is become square tube from pipe, that is: the entrance of described horizontal tangential feed tube 3 is circular, the outlet of described horizontal tangential feed tube 3 is square, then after 90 ° of angles, be connected with tangential manner with eddy flow cavity 5, the cross section that both are connected is rectangle, and square-section area is 25% of horizontal tangential feed tube 3 areas of section.Horizontal tangential feed tube 3 is arranged near the top of eddy flow cavity 5, and the spacing on its pipe center line and cavity top is 1～2 times of column type cyclone pipe internal diameter, comes liquid to prewhirl enter eddy flow cavity 5 in order to guiding.Overflow outlet 4 is arranged on the top of eddy flow cavity 5, and for the rich oil partially liq that discharge is separated from oil-water mixture, it is connected with external pipe with standard flange connected mode.Underflow outlet 6 is arranged on the other end away from horizontal tangential feed tube 3 of eddy flow cavity 5, and its pipe center line and eddy flow cavity 5 bottom spacing are 0.5～1 times of column type cyclone pipe internal diameter, for discharging the clear water liquid of separating from oil mixing with water liquid.
The horizontal side feed tube 7 of described cartridge type air-floating apparatus 2 is connected with the underflow outlet 6 of column type cyclone pipe 1 by connecting tube.In air supporting inner barrel, what be connected with horizontal side feed tube 7 is liquid spiral flow deflector 21, in order to guiding, comes liquid in air supporting cylinder, to produce certain spin intensity.Liquid spiral flow deflector 21 extends downwards with 5 °～10 ° scopes, and itself and the cylindrical shell wall intersecting lens central angle scope of projection on horizontal plane is 90 °～135 °, and flow deflector width should be greater than the caliber of horizontal side feed tube 7, gets 1.5 times of its caliber for good.For the ease of installing and maintenance air-floating apparatus, air supporting cylinder the latter half is arranged to tank flange 9 and connects.Air supporting generator 12 (structure as shown in Figure 2) fixes by four connecting rods 10 and air supporting cylindrical shell lower end, by nanometer film structure 23, gauze pad support 8, come tracheae 11, air inlet baffle plate 13 and air storing cavity 22 to form.Wherein, describedly come tracheae 11 to be connected with the bottom surface of air storing cavity 22, described gauze pad support 8 be positioned at described air storing cavity 22 above, on described gauze pad support 8, be fixed with described nanometer film structure 23; Described air inlet baffle plate 13 is arranged on the described junction of coming tracheae 11 and air storing cavity 22.19 of logical circles that have diameter on gauze pad support 8 and be 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing nanometer film structure 23.Air inlet baffle plate 13 enters the airflow direction of air storing cavity 22 for changing tracheae 11 always, avoid gas to be directly washed on air supporting gauze pad support 8.
As shown in Figure 3, nanometer film structure 23 comprises fixedly snap ring 25, upper and lower nanometer film support 24 and nanometer film 26.Upper and lower nanometer film support 24 is the disk of diameter 110mm, thick 3mm, is processed with diameter thereon and is 168～448 of the through holes of 3～5mm.On upper and lower nanometer film support 24, limit respectively a draw-in groove and position-limit foot, the interference fit by groove and pin interfixes upper and lower nanometer film support 24, thereby in the middle of nanometer film 26 is fixed on.When fixing upper and lower nanometer film support; should guarantee that the hole on support forms corresponding through hole, so that the gas in air storing cavity 22 can pass through nanometer film smoothly, form micro-bubble; this fixing means can be protected nanometer film 26, makes nanometer film be difficult for breaking under the interaction of air pressure and hydraulic pressure.Fixedly snap ring 25 is fixed on whole nanometer film structure 23 on gauze pad support by bolt.The source of the gas of air-floating apparatus is inert gas.
Described cartridge type air-floating apparatus 2 comprises three outlets, is to be respectively positioned at the clear water output pipe 14 of lower curtate, the rich oil outlet 20 on the gas outlet tube 18 on top and close top.Gas pressure valve 17 is housed on gas outlet tube 18, and when tank interior pressure reaches the pressure threshold of expection setting, gas pressure valve 17 is opened automatically, the gas of blowdown vessel inner accumulated.Water, oil export pipeline are also respectively equipped with control valve 15,19, are controlled, regulated the switch degree of water out pipeline valve 15 and oil export pipe valve 19 in running by air supporting cylinder liquid level emasuring device 16.Water outlet pipe 15 is connected with external equipment by standard flange, or can be by the direct outer row of the clear water after separation.Oil export pipe 20 is also installed as standard flange, after being connected with pipeline by the rich oil liquids recovery separating.
In technique scheme, a valve is set respectively on the overflow outlet 4 of described column type cyclone pipe 1 and underflow outlet 6, be used for regulating the flowrate proportioning of cyclone pipe overflow outlet and underflow outlet.The internal diameter of the horizontal tangential feed tube 3 of column type cyclone pipe 1 is less than or equal to the internal diameter of cyclone pipe, and the shell of column vertical length in eddy flow chamber 5 is column type cyclone pipe 1 internal diameter of 15～20 times.
In technique scheme, the air supporting cylinder of described cartridge type air-floating apparatus 2 high is 1.5 meters, 1 meter of diameter.
Provided by the inventionly be applied in the method that cyclone gas floating oily-water seperating equipment that oil field, land and offshore production platform use carries out water-oil separating, comprise the following steps:
1, oil concentration is not more than to 30% oil water mixture, from horizontal tangential feed tube 3, enters column type cyclone pipe 1;
2, through the converging transition of horizontal tangential feed tube 3, profit two-phase mixed liquor enters column type cyclone pipe 1, in eddy flow cavity 5, forms strong cyclone field.Owing to having density contrast between oil, water, in eddy flow field, the centrifugal force oily, Shui Gexiang is suffered is by difference, and the water of heavy phase is thrown toward the limit wall of cyclone pipe, and the oil of lightweight phase, to cyclone pipe central motion, is assembled and formed oily core;
3, after the valve of opening on overflow outlet 4 and underflow outlet 6, be subject to the 1 internal pressure distributional effects of column type cyclone pipe, heavy phase water will flow downward in helix mode along eddy flow tube wall, through underflow outlet 6, flow out; And lightweight mutually oil after cyclone pipe center assemble to form oily core, move upward, from the overflow outlet 4 at top, flow out, thereby reach the object of water-oil separating;
4, the opening degree of valve on controlling water kick outlet 4 and underflow outlet 6, the assignment of traffic of adjustable overflow outlet and underflow outlet.And the object of Flow-rate adjustment is to improve the efficiency of column type cyclone pipe 1 water-oil separating, avoid too much water to flow out and oily underflow outlet 6 discharges from bottom from the overflow outlet 4 at top;
5, oil-water mixture is after 1 separation of column type cyclone pipe, and the clear water oil content of discharging from underflow outlet 6 can be reduced to below 1000ppm, and this part water enters cartridge type air-floating apparatus 2 through horizontal side feed tube 7 again.Under the guiding function of horizontal side feed tube 7, liquid has produced certain rotational flow field in air supporting cylindrical shell 30 inside, through spiral flow deflector 21, further act on again, rotational flow field has obtained reinforcement, and flow direction flows according to the design direction of spiral flow deflector 21.Now, the tiny olesome in water is subject to the effect of centrifugal force in rotational flow field, will be to air supporting cylindrical shell intermediary movements;
6, inert gas source, through coming tracheae 11 to enter bubble generator 12, under nanometer film 26 effects, produces micro-bubble, and blending enters liquid in air supporting cylinder.On the one hand, under buoyancy, micro-bubble rises.Bubble, in mobile and uphill process, collides and adsorbs with tiny oil droplet free in liquid, forms bubble oil droplet assembly, and under the drive of bubble, assembly is to air supporting cylinder top floating upward quickly; On the other hand, because micro-bubble quality is little more a lot of than olesome, in eddy flow centrifugal field, the radial velocity of bubble will be greater than the radial velocity of olesome, therefore on radial direction, the bubble of catching up with from behind also will bump with olesome and adsorb, the further like this speed of olesome to the gathering of air supporting cylindrical shell center of having accelerated;
7, after bubble suction-operated, olesome in air supporting cylinder in liquid has obtained further removal, clear water after purification enters liquid collecting zone, cylindrical shell bottom from the annular space between bubble generator device and air supporting barrel, then from clear water output pipe 14, discharges; Bubble oil droplet floats to air supporting cylindrical shell 30 upper spaces, forms gas zones after bubble-break at top, and under the effect of pressure-control valve 17, gas is from outlet 18 discharges, and oil droplet is assembled formation oil reservoir, row from outlet 20 after rising to top;
8, the liquid level emasuring device on air supporting cylinder 16 is by the valve 15 of signal controlling clear water output pipe 14 and valve 19 degrees of opening of rich oil outlet 20;
9, whole processing procedure is to carry out in flowing, the outer draining after this device is processed, and its oil content can be reduced to below 20ppm, reaches state sewage emission standard.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a cyclone air-flotation oily-water seperating equipment, is characterized in that, comprising: one or more column type cyclone pipe and the vertical cartridge type air-floating apparatus being connected with described column type cyclone pipe, wherein:
Described column type cyclone pipe comprises eddy flow cavity, horizontal tangential feed tube, overflow outlet and underflow outlet; Described horizontal tangential feed tube is connected with the upper end of described eddy flow cavity, and described overflow outlet is connected with the top of described eddy flow cavity, and described underflow outlet is connected with the lower end of described eddy flow cavity;
Described vertical cartridge type air-floating apparatus comprises air supporting cylindrical shell, horizontal side feed tube, clear water output pipe, gas outlet tube, oil export pipe, liquid spiral flow deflector and air supporting generator; One end of described horizontal side feed tube is connected with the side of described air supporting cylindrical shell, and the other end is connected with described underflow outlet; Described clear water output pipe is connected with the bottom of described air supporting cylindrical shell, and described gas outlet tube is connected with the top of described air supporting cylindrical shell; Described rich oil outlet is connected with the upper end of described air supporting cylindrical shell; Described liquid spiral flow deflector is connected with described horizontal side feed tube; Described liquid spiral flow deflector and air supporting generator are positioned at the inside of described air supporting cylindrical shell;
Described liquid spiral flow deflector extends downwards with 5 °～10 ° scopes, and itself and air supporting cylindrical shell wall intersecting lens central angle scope of projection on horizontal plane are 90 °～135 °, and the width of described liquid spiral flow deflector is greater than the caliber of horizontal side feed tube.
2. device as claimed in claim 1, is characterized in that,
The entrance of described horizontal tangential feed tube is circular, and the outlet of described horizontal tangential feed tube is square, and described outlet is connected with tangential manner with described eddy flow cavity, and the cross section that described horizontal tangential feed tube is connected with described eddy flow cavity is rectangle.
3. device as claimed in claim 2, is characterized in that,
The spacing on the pipe center line of described horizontal tangential feed tube and the top of described eddy flow cavity is 1～2 times of internal diameter of described eddy flow cavity; Described underflow outlet is positioned at the other end away from described horizontal tangential feed tube of described eddy flow cavity, and the pipe center line of described underflow outlet and the bottom spacing of described eddy flow cavity are 0.5～1 times of internal diameter of described eddy flow cavity.
4. the device as described in any one in claim 1～3, is characterized in that,
Described air supporting inner barrel is also provided with liquid level emasuring device; Described overflow outlet, underflow outlet, clear water output pipe, gas outlet tube and oil export pipe place are provided with valve.
5. device as claimed in claim 1, is characterized in that,
Described air supporting generator fixes by the lower end of four connecting rods and described air supporting cylindrical shell, described air supporting generator comprises nanometer film structure, gauze pad support, air inlet baffle plate, comes tracheae and air storing cavity, describedly come tracheae to be connected with the bottom surface of air storing cavity, described gauze pad support be positioned at described air storing cavity above, on described gauze pad support, be fixed with described nanometer film structure; Described air inlet baffle plate is arranged on the described junction of coming tracheae and air storing cavity.
6. device as claimed in claim 5, is characterized in that,
19 of logical circles that have diameter on described gauze pad support and be 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing described nanometer film structure.
7. the device as described in claim 5 or 6, is characterized in that,
Described nanometer film structure comprises fixedly snap ring, upper and lower nanometer film support and nanometer film; Described nanometer film is fixed in the middle of described upper and lower nanometer film support, and on described upper and lower nanometer film support, having diameter is 168～448 of the through holes of 3～5mm, and described fixedly snap ring is fixed on described nanometer film structure on described gauze pad support by bolt.
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| CN201210122331.3A CN102626560B (en) | 2012-04-24 | 2012-04-24 | Rotational flow air flotation oil-water separation device and air flotation generator |
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| CN103303992B (en) * | 2013-06-20 | 2014-09-24 | 中国科学院力学研究所 | Rotational-flow air flotation separating device for greasy dirt-containing sewage |
| CN105060530A (en) * | 2015-08-04 | 2015-11-18 | 中国海洋石油总公司 | Offshore oilfield output liquid integrated treatment device and method |
| CN105698841B (en) * | 2016-03-27 | 2017-10-13 | 中国石油大学(华东) | A kind of oil-polluted water cyclone air-flotation evaluating apparatus and method |
| CN109422328B (en) * | 2017-08-30 | 2021-06-11 | 中国石油化工股份有限公司 | Sewage treatment device, sewage treatment system and sewage treatment method |
| CN108686838B (en) * | 2018-05-16 | 2020-01-10 | 西南科技大学 | Nanometer bubble generator |
| CN111396022B (en) * | 2020-04-03 | 2022-10-04 | 长江大学 | Oil-water in-situ separation device and method based on power rotating spiral flow technology |
| CN112169374A (en) * | 2020-09-25 | 2021-01-05 | 顾林华 | Oil-water separation device of numerical control machine tool |
| CN112357994A (en) * | 2020-11-05 | 2021-02-12 | 华东理工大学 | Method and device for removing oil by air floatation with cold air |
| CN113526614B (en) * | 2021-07-09 | 2022-04-12 | 中国科学院力学研究所 | Pipeline air-entrapping cyclone coalescence-separation device and method for treating oily sewage |
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