CN102626560A - 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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- CN102626560A CN102626560A CN2012101223313A CN201210122331A CN102626560A CN 102626560 A CN102626560 A CN 102626560A CN 2012101223313 A CN2012101223313 A CN 2012101223313A CN 201210122331 A CN201210122331 A CN 201210122331A CN 102626560 A CN102626560 A CN 102626560A
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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 present invention relates to the profit two-phase mixed liquor separation field of petrochemical field, relate 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, need oil, water mixed liquid be required to separate according to certain technological requirement or environmental protection index usually, 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 more than 80% of production fluid amount, the oil field that has even up to more than 90%.The continuous growth of output liquid treating capacity causes original profit treatment facility in oil field to be difficult to satisfy existing requirement, and along with the improving constantly of national environmental standard, further the profit treatment process to the design of original oil field proposes severe challenge.
Current, the separation method that is used for profit two-phase mixed liquor mainly contains gravitational settling, rotating centrifugal separation, air supporting choosing, filtration to be separated with film etc.Patent publication No.: CN2569538Y for example, efficient oil water separator, description be a main separator that adopts the Gravity Separation principle; Patent publication No.: CN201817338U, oily waste water treatment machine, the oily-water seperating equipment of mainly forming by the reversible fiber ball filter of swash plate, walnut shell filter and parents; Patent publication No.: CN2308435Y; Oily-water seperating equipment; This patent is by Ecological Environment Research Center, Chinese Academy of Sciences application, the oily-water seperating equipment that adopts technology such as film pervasion evaporation, centrifugal, suction and negative pressure cleaning to combine, the oil-water mixture body hydrophilic hollow fibre that helical form is coiled of under the driving of pump, flowing through; Make water-oil separating by effects such as pressure, centrifugal and suctions, can realize also that by the valve conversion negative pressure of film is cleaned.Utilizing technology such as gravity principle and filtration all is effective isolation technics means, but not enough to the processing degree of depth of oil-water mixture, processing speed is relatively slow again, therefore causes device structure complicated, bulky.
The rotating centrifugal isolation technics is to utilize the density contrast between medium to centrifugalize.Density contrast between separated medium is big more, and the grain diameter of decentralized photo is big more, and then separating effect is just good more.Patent publication No.: CN2256338Y discloses the mutually immiscible oil-water mixed liquid pre-separation hydrocyclone in a kind of oil field two, and simple in structure, volume is little, and floor space is few, but because the strong eddy flow shear action in tangential, the tiny oil droplets of generation is difficult to separate.
The disclosure of the Invention of patent publication No.: CN101417184A a kind of gas floatation separation device; Need not increase the external enwergy purging system; Can realize the target of long-term continous-stable operation; Guaranteed that microbubble as much as possible removes to adhere to the small particle diameter dispersed oil, but this device only is applicable to the oil-polluted water of low concentration, range of application is narrower.
Summary of the invention
The objective of the invention is the deficiency to 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, and is applied widely.
In order to address the above problem, the present 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 that links to each other with said column type cyclone pipe, wherein:
Said column type cyclone pipe comprises eddy flow cavity, horizontal tangential feed tube, overflow outlet and underflow outlet; Said horizontal tangential feed tube links to each other with the upper end of said eddy flow cavity, and said overflow outlet links to each other with the top of said eddy flow cavity, the lower ends of said underflow outlet and said eddy flow cavity;
Said 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 said horizontal side feed tube links to each other with the side of said air supporting cylindrical shell, and the other end links to each other with said underflow outlet; Said clear water output pipe links to each other with the bottom of said air supporting cylindrical shell, and said gas outlet tube links to each other with the top of said air supporting cylindrical shell; Said rich oil outlet links to each other with the upper end of said air supporting cylindrical shell; Said liquid spiral flow deflector links to each other with said horizontal side feed tube; Said liquid spiral flow deflector and air supporting generator are positioned at the inside of said air supporting cylindrical shell.
Preferably, said apparatus also has following characteristics:
The inlet of said horizontal tangential feed tube is circular, and the outlet of said horizontal tangential feed tube is square, and said outlet is connected with tangential manner with said eddy flow cavity, and the cross section that said horizontal tangential feed tube is connected with said eddy flow cavity is a rectangle.
Preferably, said apparatus also has following characteristics:
The spacing on the pipe center line of said horizontal tangential feed tube and the top of said eddy flow cavity is 1～2 times of internal diameter of said eddy flow cavity; Said underflow outlet is positioned at the other end away from said horizontal tangential feed tube of said eddy flow cavity, and the pipe center line of said underflow outlet and the bottom spacing of said eddy flow cavity are 0.5～1 times of internal diameter of said eddy flow cavity.
Preferably, said apparatus also has following characteristics:
Said 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 said liquid spiral flow deflector is greater than the caliber of horizontal side feed tube.
Preferably, said apparatus also has following characteristics:
Said air supporting barrel also is provided with liquid level emasuring device; Said 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:
Said air supporting generator fixes through the lower end of four connecting rods and said air supporting cylindrical shell; Said air supporting generator comprises nanometer film structure, gauze pad support, air inlet baffle plate, comes tracheae and air storing cavity; Saidly come tracheae to link to each other with the bottom surface of air storing cavity; Said gauze pad support be positioned at said air storing cavity above, be fixed with said nanometer film structure on the said gauze pad support; Said air inlet baffle plate is arranged on the said junction of coming tracheae and air storing cavity.
Preferably, said apparatus also has following characteristics:
Have diameter on the said gauze pad support and be 19 of the logical circles of 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing said nanometer film structure.
Preferably, said apparatus also has following characteristics:
Said nanometer film structure comprises fixedly snap ring, nanometer film support and nanometer film up and down; Said nanometer film is fixed in the middle of the said up and down nanometer film support, and it is 168～448 of the through holes of 3～5mm that diameter is arranged on the said nanometer film support up and down, and said fixedly snap ring is fixed on said nanometer film structure on the said gauze pad support through bolt.
In order to address the above problem; The present 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; Saidly come tracheae to link to each other with the bottom surface of air storing cavity, said gauze pad support be positioned at said air storing cavity above, be fixed with said nanometer film structure on the said gauze pad support; Said air inlet baffle plate is arranged on the said junction of coming tracheae and air storing cavity.
Preferably, above-mentioned air supporting generator also has following characteristics:
Have diameter on the said gauze pad support and be 19 of the logical circles of 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing said nanometer film structure.
Preferably, above-mentioned air supporting generator also has following characteristics:
Said nanometer film structure comprises fixedly snap ring, nanometer film support and nanometer film up and down; Said nanometer film is fixed in the middle of the said up and down nanometer film support, and it is 168～448 of the through holes of 3～5mm that diameter is arranged on the said nanometer film support up and down, and said fixedly snap ring is fixed on said nanometer film structure on the said gauze pad support through bolt.
The present invention has fully utilized high-speed rotational principle and bubble suction-operated, and whole flow process is carried out in being in and flowing.Mix to come liquid to carry out preliminary treatment in profit through the column type cyclone pipe, the sewage that will hang down oil-containing then carries out the air supporting effect in the air supporting tube, can further reduce the oil content in the water, reaches state sewage emission standard.Apparatus and method volume of the present invention is little; In light weight; Treatment effeciency is high, to coming liquid parameter adaptation scope wide, has overcome the inefficiency problem that traditional gravity is handled; Avoided filtration processing equipment bulky when adopting the eddy flow principle tiny olesome handle problems the secondary pollution and the cost problem that do not exist chemical demulsification to cause.This separation apparatus and method are a kind of raising separative efficiencies, improve isolation technics, alleviate the effective way of separator weight of equipment, are suitable for land and the offshore production platform use, have better industrial application prospect.
Description of drawings
Fig. 1 is the structural representation of the cyclone air-flotation oily-water seperating equipment of the embodiment of the invention;
Fig. 2 is the structural representation of the air supporting generator of the embodiment of the invention;
Fig. 3 is the structural representation of the nanometer film structure of the embodiment of the invention.
The specific embodiment
Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
A kind of cyclone air-flotation oily-water seperating equipment of the embodiment of the invention comprises one or many column type cyclone pipes 1 and vertical cartridge type air-floating apparatus 2, and is 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.Said horizontal tangential feed tube 3 links to each other with the upper end of said eddy flow cavity 5, and said overflow outlet 4 links to each other with the top of said eddy flow cavity 5, the lower ends of said underflow outlet 6 and said 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 said horizontal side feed tube 7 links to each other with the side of said air supporting cylindrical shell 30, and the other end links to each other with said underflow outlet 6; Said clear water output pipe 14 links to each other with the bottom of said air supporting cylindrical shell 30, and said gas outlet tube 18 links to each other with the top of said air supporting cylindrical shell 30; Said rich oil outlet 20 links to each other with the upper end of said air supporting cylindrical shell 30; Said liquid spiral flow deflector 21 links to each other with said horizontal side feed tube 7; Said liquid spiral flow deflector 21 and air supporting generator 12 are positioned at the inside of said air supporting cylindrical shell 30.
In this article, " upper end " refers near the top, and " lower end " refers at bottom end vicinity.
The horizontal tangential feed tube 3 of said column type cyclone pipe 1 has the individual transition that is become square tube by pipe; That is: the inlet of said horizontal tangential feed tube 3 is circular; The outlet of said horizontal tangential feed tube 3 is square; Through being connected with tangential manner with eddy flow cavity 5 after 90 ° of angles, the cross section that both are connected is a rectangle, and the square-section area is 25% of horizontal tangential feed tube 3 areas of section then.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 in order to guiding and gets into eddy flow cavity 5.Overflow outlet 4 is arranged on the top of eddy flow cavity 5, is used for rich oil partially liq that discharging is separated from oil-water mixture, and it is connected with external pipe with the 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 spacings are 0.5～1 times of column type cyclone pipe internal diameter, are used for discharging the clear water liquid of separating from the oil-water mixture body.
The horizontal side feed tube 7 of said cartridge type air-floating apparatus 2 is connected with the underflow outlet 6 of column type cyclone pipe 1 through connecting tube.In the air supporting barrel, what be connected with horizontal side feed tube 7 is liquid spiral flow deflector 21, comes liquid in the air supporting tube, to produce certain spin intensity in order to guiding.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 the flow deflector width should be greater than the caliber of horizontal side feed tube 7, and 1.5 times that get its caliber for good.For the ease of installing and the maintenance air-floating apparatus, air supporting tube the latter half is arranged to tank flange 9 connects.Air supporting generator 12 (structure is as shown in Figure 2) fixes through 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, saidly come tracheae 11 to link to each other with the bottom surface of air storing cavity 22, said gauze pad support 8 be positioned at said air storing cavity 22 above, be fixed with said nanometer film structure 23 on the said gauze pad support 8; Said air inlet baffle plate 13 is arranged on the said junction of coming tracheae 11 and air storing cavity 22.Have diameter on the gauze pad support 8 and be 19 of the logical circles of 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing nanometer film structure 23.Air inlet baffle plate 13 is used to change the airflow direction of tracheae 11 entering air storing cavities 22 always, avoids gas directly to be washed on the air supporting gauze pad support 8.
As shown in Figure 3, nanometer film structure 23 comprises fixedly snap ring 25, nanometer film support 24 and nanometer film 26 up and down.Nanometer film support 24 is the disk of diameter 110mm, thick 3mm up and down, is processed with diameter above that and is 168～448 of the through holes of 3～5mm.Limit respectively on the upper and lower nanometer film support 24 draw-in groove and position-limit foot, the interference fit through 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 the support constitutes corresponding through hole,, form micro-bubble so that the gas in the air storing cavity 22 can pass through nanometer film smoothly; This fixing means can be protected nanometer film 26, makes nanometer film under the interaction of air pressure and hydraulic pressure, be difficult for breaking.Fixedly snap ring 25 is fixed on whole nanometer film structure 23 on the gauze pad support through bolt.The source of the gas of air-floating apparatus is an inert gas.
Said cartridge type air-floating apparatus 2 comprises three outlets, is respectively the gas outlet tube 18 on the clear water output pipe 14 that is positioned at lower curtate, top and near the rich oil outlet 20 on top.Gas pressure valve 17 is housed on gas outlet tube 18, and when tank interior pressure reached the pressure threshold of expection setting, gas pressure valve 17 was opened automatically, the gas of blowdown vessel accumulated.Water, oil export pipeline also are respectively equipped with control valve 15,19, in running, control, regulate the switch degree of water out pipeline valve 15 and oil export pipe valve 19 through air supporting tube liquid level emasuring device 16.Water outlet pipe 15 is connected with external equipment through standard flange, perhaps can the clear water that pass through after the separation directly be effluxed.Oil export pipe 20 also is installed as standard flange, with after pipeline is connected with the rich oil liquids recovery of telling.
In technique scheme, on the overflow outlet 4 of said column type cyclone pipe 1 and the underflow outlet 6 valve is set respectively, 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 15～20 times column type cyclone pipe 1 internal diameter.
In technique scheme, the air supporting tube of said 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 air-flotation formula oily-water seperating equipment that oil field, land and offshore production platform use carries out water-oil separating, may further comprise the steps:
1, oil concentration is not more than 30% oil water mixture, gets into column type cyclone pipes 1 from horizontal tangential feed tube 3;
2, through the converging transition of horizontal tangential feed tube 3, profit two phase mixed liquors get into column type cyclone pipe 1, in eddy flow cavity 5, form strong cyclone field.Owing to have density contrast between oil, the water, in eddy flow field, the centrifugal force oily, that Shui Gexiang is suffered is with difference, and the water of heavy phase is thrown toward the limit wall of cyclone pipe, and the oil of lightweight phase assembles forming oil nuclear then to the cyclone pipe central motion;
3, behind the valve of opening on overflow outlet 4 and the underflow outlet 6, receive the 1 internal pressure distributional effects of column type cyclone pipe, heavy phase water will flow downward with the helix mode along the eddy flow tube wall, flow out through underflow outlet 6; And lightweight mutually oil after the cyclone pipe center assemble to form oil nuclear, move upward, flow out from the overflow outlet 4 at top, thereby reach the purpose of water-oil separating;
4, the opening degree of valve on control overflow outlet 4 and the underflow outlet 6, the assignment of traffic of scalable overflow outlet and underflow outlet.And the purpose of Flow-rate adjustment is to improve the efficient of column type cyclone pipe 1 water-oil separating, avoids too much water to discharge from the underflow outlet 6 of bottom with oil from overflow outlet 4 outflows at top;
5, oil-water mixture is after column type cyclone pipe 1 separates, and the clear water oil content of discharging from underflow outlet 6 can be reduced to below the 1000ppm, and this part water gets into 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; Further act on through spiral flow deflector 21 again, rotational flow field has obtained reinforcement, and flow direction is mobile according to the design direction of spiral flow deflector 21.At this moment, the tiny olesome in the water receives action of centrifugal force in rotational flow field, will be to air supporting cylindrical shell intermediary movements;
6, inert gas source gets into bubble generator 12 through coming tracheae 11, under nanometer film 26 effects, produces micro-bubble, and blending gets into liquid in the air supporting tube.On the one hand, under buoyancy, micro-bubble rises.Bubble flow with uphill process in, collide with tiny oil droplet free in the liquid and adsorb, form bubble oil droplet assembly, under the drive of bubble, assembly is to air supporting tube top floating upward quickly; On the other hand; Because the micro-bubble quality is little more a lot of than olesome; In the 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 quickened;
7, through after the absorbing bubbles effect; Olesome in the air supporting tube in the liquid has obtained further removal; Clear water after the purification gets into cylindrical shell bottom liquid collecting zone from the annular space between bubble generator device and the air supporting barrel, discharges from clear water output pipe 14 then; The bubble oil droplet floats to air supporting cylindrical shell 30 upper spaces on then, forms gas zones at the top behind the bubble-break, and under the effect of pressure-control valve 17, gas is from outlet 18 dischargings, and oil droplet rises to assemble behind the top and forms oil reservoir, effluxes from outlet 20;
8, the liquid level emasuring device on the air supporting tube 16 is through the valve 15 of signal controlling clear water output pipe 14 and valve 19 degrees of opening of rich oil outlet 20;
9, the entire process process is in flowing, to carry out, and through the outer draining after this apparatus processes, its oil content can be reduced to below the 20ppm, reaches state sewage emission standard.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
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 that links to each other with said column type cyclone pipe, wherein:
Said column type cyclone pipe comprises eddy flow cavity, horizontal tangential feed tube, overflow outlet and underflow outlet; Said horizontal tangential feed tube links to each other with the upper end of said eddy flow cavity, and said overflow outlet links to each other with the top of said eddy flow cavity, the lower ends of said underflow outlet and said eddy flow cavity;
Said 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 said horizontal side feed tube links to each other with the side of said air supporting cylindrical shell, and the other end links to each other with said underflow outlet; Said clear water output pipe links to each other with the bottom of said air supporting cylindrical shell, and said gas outlet tube links to each other with the top of said air supporting cylindrical shell; Said rich oil outlet links to each other with the upper end of said air supporting cylindrical shell; Said liquid spiral flow deflector links to each other with said horizontal side feed tube; Said liquid spiral flow deflector and air supporting generator are positioned at the inside of said air supporting cylindrical shell.
2. device as claimed in claim 1 is characterized in that,
The inlet of said horizontal tangential feed tube is circular, and the outlet of said horizontal tangential feed tube is square, and said outlet is connected with tangential manner with said eddy flow cavity, and the cross section that said horizontal tangential feed tube is connected with said eddy flow cavity is a rectangle.
3. device as claimed in claim 2 is characterized in that,
The spacing on the pipe center line of said horizontal tangential feed tube and the top of said eddy flow cavity is 1～2 times of internal diameter of said eddy flow cavity; Said underflow outlet is positioned at the other end away from said horizontal tangential feed tube of said eddy flow cavity, and the pipe center line of said underflow outlet and the bottom spacing of said eddy flow cavity are 0.5～1 times of internal diameter of said eddy flow cavity.
4. device as claimed in claim 1 is characterized in that,
Said 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 said liquid spiral flow deflector is greater than the caliber of horizontal side feed tube.
5. like any described device in the claim 1～4, it is characterized in that,
Said air supporting barrel also is provided with liquid level emasuring device; Said overflow outlet, underflow outlet, clear water output pipe, gas outlet tube and oil export pipe place are provided with valve.
6. device as claimed in claim 1 is characterized in that,
Said air supporting generator fixes through the lower end of four connecting rods and said air supporting cylindrical shell; Said air supporting generator comprises nanometer film structure, gauze pad support, air inlet baffle plate, comes tracheae and air storing cavity; Saidly come tracheae to link to each other with the bottom surface of air storing cavity; Said gauze pad support be positioned at said air storing cavity above, be fixed with said nanometer film structure on the said gauze pad support; Said air inlet baffle plate is arranged on the said junction of coming tracheae and air storing cavity.
7. device as claimed in claim 6 is characterized in that,
Have diameter on the said gauze pad support and be 19 of the logical circles of 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing said nanometer film structure;
Said nanometer film structure comprises fixedly snap ring, nanometer film support and nanometer film up and down; Said nanometer film is fixed in the middle of the said up and down nanometer film support, and it is 168～448 of the through holes of 3～5mm that diameter is arranged on the said nanometer film support up and down, and said fixedly snap ring is fixed on said nanometer film structure on the said gauze pad support through bolt.
8. air supporting generator; It is characterized in that, comprise nanometer film structure, gauze pad support, air inlet baffle plate, come tracheae and air storing cavity, saidly come tracheae to link to each other with the bottom surface of air storing cavity; Said gauze pad support be positioned at said air storing cavity above, be fixed with said nanometer film structure on the said gauze pad support; Said air inlet baffle plate is arranged on the said junction of coming tracheae and air storing cavity.
9. air supporting generator as claimed in claim 8 is characterized in that,
Have diameter on the said gauze pad support and be 19 of the logical circles of 100mm, each logical circumference is arranged with 8 bolts hole, in order to fixing said nanometer film structure.
10. like claim 8 or 9 described air supporting generators, it is characterized in that,
Said nanometer film structure comprises fixedly snap ring, nanometer film support and nanometer film up and down; Said nanometer film is fixed in the middle of the said up and down nanometer film support, and it is 168～448 of the through holes of 3～5mm that diameter is arranged on the said nanometer film support up and down, and said fixedly snap ring is fixed on said nanometer film structure on the said gauze pad support through bolt.
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| CN103303992A (en) * | 2013-06-20 | 2013-09-18 | 中国科学院力学研究所 | Rotational-flow air flotation separating device for greasy dirt-containing sewage |
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| CN105698841A (en) * | 2016-03-27 | 2016-06-22 | 中国石油大学(华东) | Oil-containing sewage cyclone flotation evaluation device and method using same |
| CN108686838A (en) * | 2018-05-16 | 2018-10-23 | 西南科技大学 | A kind of nano-bubble generator |
| CN109422328A (en) * | 2017-08-30 | 2019-03-05 | 中国石油化工股份有限公司 | Sewage-treatment plant and sewage disposal system and sewage water treatment method |
| CN111396022A (en) * | 2020-04-03 | 2020-07-10 | 长江大学 | Oil-water in-situ separation device and method based on power rotating spiral flow technology |
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| 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 |
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