CN102603088B - Bi-stage air floater - Google Patents
Bi-stage air floater Download PDFInfo
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- CN102603088B CN102603088B CN 201110338486 CN201110338486A CN102603088B CN 102603088 B CN102603088 B CN 102603088B CN 201110338486 CN201110338486 CN 201110338486 CN 201110338486 A CN201110338486 A CN 201110338486A CN 102603088 B CN102603088 B CN 102603088B
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- Prior art keywords
- air
- water
- cavitation
- floating system
- air floating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005188 flotation Methods 0.000 claims description 12
- 238000007667 floating Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 30
- 239000010865 sewage Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004581 coalescence Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007764 o/w emulsion Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses a bi-stage air floater, comprising a pool body. The pool body is internally provided with a cavitation air floating system, a dissolved-air floating system and a water tank, a water inlet is arranged in the cavitation air floating system, and a water outlet is arranged on the water tank; the cavitation air floating system comprises a mixer and a cavitation machine, and a first-stage oil outlet is arranged on the cavitation air floating system corresponding to the sidewall of the pool body; and a jet device is arranged at the bottom of the dissolved-air floating system, a stop plate and a current stabilization plate are arranged above the jet device, a dissolved-air water releaser is arranged at the bottom of one side of the jet device, a scraper board is arranged at the top of the dissolved-air floating system, and a second-stage oil outlet is arranged on the sidewall of the pool body. The bi-stage air floater disclosed by the invention has the advantages of scientific structural design, low running cost and good treatment effect, and devices are less prone to be corroded.
Description
Technical field
The invention belongs to the environmental protection field, be specifically related to a kind of double-stage air floatation device of handling polymer-containing sewage in oil field.
Background technology
Along with poly-going deep into 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 depends on that action of gravity realizes having, the separation of water, suspended substance, and it is very difficult making water outlet reach filtering condition.
At present,,, adopt air floating method, collide the coalescence ability between the particle mutually to increase, increase particle buoyance lift speed, improve separating effect from the angle analysis of physical method at the water quality characteristics of tertiary oil recovery 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 objective of the invention is at the deficiencies in the prior art, 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 present invention specifically finishes 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; Described cavitation air flotation system comprises agitator and cavitation machine, and offers the one-level oil outlet on the cavitation air flotation system corresponding pond body sidewall; Described 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 described water tank.
Wherein, described 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, make air in the shortest time, dissolve in the water to greatest extent, form saturated dissolved gas water, forming many small bubbles in the water adheres to oil in water emulsion in the water or suspended substance 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 enters water tank is by action of gravity, and clear water is discharged from water outlet, and part is as recirculation water.
Beneficial effect: compare with conventional art, the present invention has following advantage:
1, reduces the corrosion of equipment
Now the flocculation agent major part in oil field is a polymerize aluminum chloride, 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 chlorion 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 as 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 polymerize aluminum chloride of every in theory adding can produce 50 tons scum silica frost.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Embodiment 1:
A kind of double-stage air floatation device provided by the invention 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; Described cavitation air flotation system 2 comprises agitator 7 and cavitation machine 8, and offers one-level oil outlet 9 on cavitation air flotation system 2 corresponding pond body 1 sidewalls; Described 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 described water tank 4, the bottom is provided with recirculation water outlet 17.
Embodiment 2:
Experimental data (the 3000m of polymer-contained sewage of the present invention
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 polymer-contained sewage of the present invention
3The test of advance oil tank outlet sewage)
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. double-stage air floatation device, it is characterized in that, comprise a pond body (1), be provided with cavitation air flotation system (2), air-dissolving air-float system (3) and water tank (4) in the pond body (1), cavitation air flotation system (2) locates to be provided with water-in (5), and water tank (4) is provided with water outlet (6); Described cavitation air flotation system (2) comprises agitator (7) and cavitation machine (8), and offers one-level oil outlet (9) on cavitation air flotation system (2) corresponding pond body (1) sidewall; Described 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 described water tank (4).
3. double-stage air floatation device according to claim 1 and 2 is characterized in that, described water tank (4) bottom is provided with recirculation water outlet (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338486 CN102603088B (en) | 2011-10-31 | 2011-10-31 | Bi-stage air floater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338486 CN102603088B (en) | 2011-10-31 | 2011-10-31 | Bi-stage air floater |
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| Publication Number | Publication Date |
|---|---|
| CN102603088A CN102603088A (en) | 2012-07-25 |
| CN102603088B true CN102603088B (en) | 2013-07-24 |
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| CN 201110338486 Active CN102603088B (en) | 2011-10-31 | 2011-10-31 | Bi-stage air floater |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696043A (en) * | 2009-10-29 | 2010-04-21 | 麦王环保工程技术(上海)有限公司 | Progressive air flotation device |
| CN201999760U (en) * | 2011-04-07 | 2011-10-05 | 辽宁华孚环境工程有限公司 | Two-level air flotation oil remover |
| CN202379822U (en) * | 2011-10-31 | 2012-08-15 | 宜兴市紫晶环保设备有限公司 | Two-stage air flotation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2596038A1 (en) * | 2005-02-07 | 2006-08-17 | M-I L.L.C. | Apparatus for separation of water from oil-based drilling fluid and advanced water treatment |
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2011
- 2011-10-31 CN CN 201110338486 patent/CN102603088B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696043A (en) * | 2009-10-29 | 2010-04-21 | 麦王环保工程技术(上海)有限公司 | Progressive air flotation device |
| CN201999760U (en) * | 2011-04-07 | 2011-10-05 | 辽宁华孚环境工程有限公司 | Two-level air flotation oil remover |
| CN202379822U (en) * | 2011-10-31 | 2012-08-15 | 宜兴市紫晶环保设备有限公司 | Two-stage air flotation device |
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| Publication number | Publication date |
|---|---|
| CN102603088A (en) | 2012-07-25 |
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| C06 | Publication | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Hangye Inventor after: Zhuo Xiaohui Inventor after: Wu Ya Inventor after: Cai Pinlei Inventor after: Sun Junliang Inventor after: Chen Weixin Inventor after: Shi Buqian Inventor after: Shao Xiaojun Inventor after: Li Jingquan Inventor after: Zhao Shiyu Inventor after: Zhao Yupeng Inventor after: Ma Zhenfeng Inventor after: Jia Zhengshe Inventor after: Ding Hongxia Inventor before: Yan Hangye Inventor before: Zhuo Xiaohui Inventor before: Shao Xiaojun Inventor before: Sun Junliang Inventor before: He Xuwei Inventor before: Chen Weixin |
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Free format text: CORRECT: INVENTOR; FROM: YAN HENGYE ZHUO XIAOHUI SHAO XIAOJUN SUN JUNLIANG HE XUWEI CHEN WEIXIN TO: YAN HENGYE SHI BUQIAN SHAO XIAOJUN LI JINGQUAN ZHAO SHIYU ZHAO YUPENG MA ZHENFENG JIA ZHENGSHE DING HONGXIA ZHUO XIAOHUI WU YA CAI PINLEI SUN JUNLIANG CHEN WEIXIN |
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Effective date of registration: 20160906 Address after: 214237 Wuxi, Jiangsu City, Yixing Province Zhang Zhu industrial concentration area Patentee after: Jiangsu, Environmental Engineering Co. Ltd. Address before: 214231 Wuxi, Jiangsu City, Yixing Province Zhang Zhu industrial concentration area Patentee before: Amethyst Yixing Environmental Protection Equipment Co., Ltd. |
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Effective date of registration: 20180530 Address after: 710077 Xi'an, Yanta District, Shaanxi, north of Jinye two Road North yycui garden first a 6 unit, 21 floors 62102 rooms. Patentee after: Shaanxi Hai Ji Ya Environmental Protection Technology Co., Ltd. Address before: 214237 Zhang Zhu industrial concentration area, Yixing City, Wuxi, Jiangsu Patentee before: Jiangsu, Environmental Engineering Co. Ltd. |