CN202379822U - Two-stage air flotation device - Google Patents
Two-stage air flotation device Download PDFInfo
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- CN202379822U CN202379822U CN2011204236388U CN201120423638U CN202379822U CN 202379822 U CN202379822 U CN 202379822U CN 2011204236388 U CN2011204236388 U CN 2011204236388U CN 201120423638 U CN201120423638 U CN 201120423638U CN 202379822 U CN202379822 U CN 202379822U
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- air
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- cavitation
- air flotation
- ejector
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Abstract
The utility model discloses a two-stage air flotation device. The two-stage air flotation device comprises a pool body, wherein a cavitation-air flotation system, a dissolved air floatation system and a water tank are arranged in the pool body; a water inlet is formed in the cavitation-air flotation system; a water outlet is formed in the water tank; the cavitation-air flotation system comprises a stirrer and a cavitation machine; a first-stage oil outlet is formed in the side wall of a pool body corresponding to the cavitation-air flotation system; an ejector is arranged at the bottom of the dissolved air floatation system; a baffle plate and a steady flow plate are arranged above the ejector; a dissolved air water releaser is arranged at the bottom of the pool on one side of the ejector; a slag scraping plate is arranged on the top of the dissolved air floatation system; and a second-stage oil outlet is formed in the pool body on the side wall. The two-stage air flotation device is scientific in structural design, low in operation cost and good in treatment effect, and is not easy to be corroded.
Description
Technical field
The utility model belongs to the environmental protection field, is specifically related to a kind of double-stage air floatation device of handling polymer-containing sewage in oil field.
Background technology
Along with going deep into of gathering annotated in the oil field, stratum output liquid water-based changes greatly, and sewage viscosity increases, and has reduced oil droplet buoyance lift speed, and the oil droplet particle attenuates little, and the emulsification degree increases, is difficult to coalescence; The suspended substance individual particles attenuates little, and stability strengthens, and the settling character variation is suspended state in water, is difficult to separate; Existing slurry tank only leans on that action of gravity realizes having, the separation of water, suspended substance, and making water outlet reach filtering condition is difficulty very.
At present,,, adopt air floating method, collide the coalescence ability between the particle each other to increase, increase particle buoyance lift speed, improve separating effect from the angle analysis of physical method to the water quality characteristics of TOR sewage; From the angle analysis of chemical process, add chemical agent particle is taken off, increase mutual coalescence and become oarse-grained ability, improve oil, water, mud velocity of separation.Therefore, what generally adopt is the method for air supporting+dosing, has a lot of drawbacks but do like this: the one, produce a large amount of flcos after the dosing, and need carry out the multistep subsequent disposal; The 2nd, flco will be carried oil slick secretly, and these oil slick can not reclaim, significant wastage resource; The 3rd, increase running cost.
Summary of the invention
Goal of the invention: the purpose of the utility model is the deficiency to prior art, and a kind of two air-floating apparatus of handling polymer-containing sewage in oil field are provided.
Technical scheme: in order to reach the foregoing invention purpose; The utility model is specifically accomplished like this: a kind of double-stage air floatation device; It is characterized in that, comprise a pond body, be provided with cavitation air flotation system, air-dissolving air-float system and water tank in the body of pond; Cavitation air flotation system place is provided with water-in, and water tank is provided with water outlet; Said cavitation air flotation system comprises whisking appliance and cavitation machine, and offers the one-level oil outlet on the cavitation air flotation system corresponding pond body sidewall; Said air-dissolving air-float system bottom is provided with ejector, and the ejector top is provided with baffle plate and stabilier, is provided with the dissolved air water reliever at the bottom of the pond of ejector one side, and the air-dissolving air-float system top is provided with dreg scraper, has the secondary oil outlet on the pond body of sidewall.
Wherein, be provided with adjustable dash weir plate in the said water tank.
Wherein, said water tank bottom is provided with the recirculation water outlet.
During concrete work, sewage is removed the oil and the suspended substance of grain diameter bigger in the sewage by the inlet bleeder through the aeration of stirring and cavitation machine.Then; Further cut into micro bubble through ejector mixing and diffusion, air is dissolved in the shortest time in the water to greatest extent, form saturated dissolved gas water; Forming many small bubbles in the water adheres to oil in water emulsion or the suspended substance in the water and overflows the water surface; On the water surface, form scum silica frost, through the dreg scraper discharger, with reach remove the purpose of the smaller oil in water emulsion of the grain diameter in the sewage handled and more stable suspended substance.At last, the water that gets into water tank is through action of gravity, and clear water is discharged from water outlet, and part is as recirculation water.
Beneficial effect: compare with conventional art, the utlity model has following advantage:
1, reduces corrosion on Equipment
Now the flocculation agent major part in oil field is a Poly aluminum Chloride (PAC), and data show, but add-on is when being 200ppm, the PH of the water system 0.2-0.3 that just descends, and increased the cl ions in the water.
2, not dosing reduces the running cost of equipment, is that 200ppm calculates with the add-on, and the reagent cost of water per ton is 0.4 yuan.
3, add behind the medicament with water in the oil slick reaction generate flco and can not reclaim, then can refiltered oil like not dosing, by import oil-containing 200ppm, outlet oil-containing 20ppm calculates, and calculates by handling 10000 side's water every day, then can overcharge 1.8 tons of crude oil
4, produce a large amount of flcos after the dosing, need subsequent disposal, 1 ton of Poly aluminum Chloride (PAC) of every in theory adding can produce 50 tons scum silica frost.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Embodiment
Embodiment 1:
A kind of double-stage air floatation device that the utility model provides comprises a pond body 1, is provided with cavitation air flotation system 2, air-dissolving air-float system 3 and water tank 4 in the pond body 1, and cavitation air flotation system 2 places are provided with water-in 5, and water tank 4 is provided with water outlet 6; Said cavitation air flotation system 2 comprises whisking appliance 7 and cavitation machine 8, and offers one-level oil outlet 9 on cavitation air flotation system 2 corresponding pond body 1 sidewalls; Said air-dissolving air-float system 3 bottoms are provided with ejector 10; Ejector 10 tops are provided with baffle plate 11 and stabilier 12; Be provided with dissolved air water reliever 13 at the bottom of the pond of ejector one side, air-dissolving air-float system 3 tops are provided with dreg scraper 14, have secondary oil outlet 15 on the pond body of sidewall; Be provided with adjustable dash weir plate 16 in the said water tank 4, the bottom is provided with recirculation water outlet 17.
Embodiment 2:
Experimental data (the 3000m of the utility model polymer-contained sewage
3The test of sewage slurry tank outlet sewage)
Table 1 duplex 3000m
3Slurry tank water outlet double-stage air floatation is selected the testing data cartogram
Conclusion:
3000m
3The slurry tank water outlet is taken a sample 15 for three days on end altogether, the highest 88.6mg/L of oil-containing, and the minimum 43.9mg/L of oil-containing, average 59.14mg/L.Water outlet is taken a sample 15 altogether after double-stage air floatation, the highest 18.3mg/L of oil-containing, the minimum 2.34mg/L of oil-containing, average 9.88mg/L.Oil removal rate is the highest by 94.8%, and is minimum 67.3%, average 83.3%,
In polymer-bearing waste-water, under the conventional air-floating apparatus dosing and the condition of not dosing, the clearance of oil is 50～60%, and this double-stage air floatation device clearance has on average reached 80%, Comparatively speaking has incomparable advantage.
Embodiment 3:
Experimental data (the 5000m of the utility model polymer-contained sewage
3Collect the test of oil tank outlet sewage in advance)
Table 2 duplex 5000m
3Remove oil tank water outlet double-stage air floatation and select the testing data cartogram
Conclusion:
When coming the water oil-containing between 100-200mg/L, after double-stage air floatation is handled, the highest 19.9mg/L of oil-containing, the average 16.88mg/L of minimum 13.7mg/L satisfies the requirement of hay tank import oil-containing less than 30mg/L.Reduce filtering load, increase the misgivings cycle of filtrate, make water after the filtration can satisfy the waterflooding requirement of low-permeability oilfield.
Claims (3)
1. a double-stage air floatation device is characterized in that, comprises a pond body (1), is provided with cavitation air flotation system (2), air-dissolving air-float system (3) and water tank (4) in the pond body (1), and cavitation air flotation system (2) locates to be provided with water-in (5), and water tank (4) is provided with water outlet (6); Said cavitation air flotation system (2) comprises whisking appliance (7) and cavitation machine (8), and offers one-level oil outlet (9) on cavitation air flotation system (2) corresponding pond body (1) sidewall; Said air-dissolving air-float system (3) bottom is provided with ejector (10); Ejector (10) top is provided with baffle plate (11) and stabilier (12); Be provided with dissolved air water reliever (13) at the bottom of the pond of ejector one side; Air-dissolving air-float system (3) top is provided with dreg scraper (14), has secondary oil outlet (15) on the pond body of sidewall.
2. double-stage air floatation device according to claim 1 is characterized in that, is provided with adjustable dash weir plate (16) in the said water tank (4).
3. double-stage air floatation device according to claim 1 and 2 is characterized in that, said water tank (4) bottom is provided with recirculation water outlet (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204236388U CN202379822U (en) | 2011-10-31 | 2011-10-31 | Two-stage air flotation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204236388U CN202379822U (en) | 2011-10-31 | 2011-10-31 | Two-stage air flotation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202379822U true CN202379822U (en) | 2012-08-15 |
Family
ID=46628339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204236388U Withdrawn - After Issue CN202379822U (en) | 2011-10-31 | 2011-10-31 | Two-stage air flotation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202379822U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603088A (en) * | 2011-10-31 | 2012-07-25 | 宜兴市紫晶环保设备有限公司 | Bi-stage air floater |
| CN105984913A (en) * | 2015-01-27 | 2016-10-05 | 无锡市兴盛环保设备有限公司 | Novel air flotation system used for sewage treatment |
-
2011
- 2011-10-31 CN CN2011204236388U patent/CN202379822U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603088A (en) * | 2011-10-31 | 2012-07-25 | 宜兴市紫晶环保设备有限公司 | Bi-stage air floater |
| CN102603088B (en) * | 2011-10-31 | 2013-07-24 | 宜兴市紫晶环保设备有限公司 | Bi-stage air floater |
| CN105984913A (en) * | 2015-01-27 | 2016-10-05 | 无锡市兴盛环保设备有限公司 | Novel air flotation system used for sewage treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Hangye Inventor after: Chen Weixin Inventor after: He Xuwei Inventor after: Shi Buqian Inventor after: Li Jingquan Inventor after: Zhao Shiyu Inventor after: Zhao Yupeng Inventor after: Ma Zhenfeng Inventor after: Zhuo Xiaohui Inventor after: Shao Xiaojun Inventor after: Sun Junliang Inventor before: Yan Hangye Inventor before: Zhuo Xiaohui Inventor before: Shao Xiaojun Inventor before: Sun Junliang Inventor before: He Xuwei Inventor before: Chen Weixin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YAN HENGYE ZHUO XIAOHUI SHAO XIAOJUN SUN JUNLIANG HE XUWEI CHEN WEIXIN TO:YAN HENGYE SHI BUQIAN LI JINGQUAN ZHAO SHIYU ZHAO YUPENG MA ZHENFENG ZHUO XIAOHUI SHAO XIAOJUN SUN JUNLIANG CHEN WEIXIN HE XUWEI |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20130724 |
|
| RGAV | Abandon patent right to avoid regrant |