CN1546196A - Apparatus and method for pressurized air-dissolving and air-floating water powered cyclone water-oil separation - Google Patents
Apparatus and method for pressurized air-dissolving and air-floating water powered cyclone water-oil separation Download PDFInfo
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- CN1546196A CN1546196A CNA2003101190240A CN200310119024A CN1546196A CN 1546196 A CN1546196 A CN 1546196A CN A2003101190240 A CNA2003101190240 A CN A2003101190240A CN 200310119024 A CN200310119024 A CN 200310119024A CN 1546196 A CN1546196 A CN 1546196A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 5
- 238000000926 separation method Methods 0.000 title abstract description 7
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 31
- 238000005188 flotation Methods 0.000 claims description 21
- 238000009300 dissolved air flotation Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 3
- 239000011344 liquid material Substances 0.000 abstract 2
- 239000006260 foam Substances 0.000 abstract 1
- 238000007600 charging Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The invention is a kind of pressing and gas-floating water rotation oil-water separating device. The inputting material is dissolved with gas under being pressed, the liquid material is saturated by the dissolved gas, and the gas is elutriated along the decreased pressure when the liquid material flows to the centre in high speed rotation, forms tiny foam which carrying the tiny oil drop in the material, the gas-floating oil decreasing and the rotation separation are combined, the oil-water separation efficiency is upgraded greatly, the oil content is decreased greatly.
Description
Technical field the invention belongs to oil-water separation technology field.Be particularly related to a kind of oil-moisture from pressurized dissolved air flotation formula hydraulic cyclone equipment.
Background technology water-oil separating is the major issue in the oily waste water treatment, and the huge economy and the value of environmental protection are arranged.Hydrocyclone is that the centrifugal force that utilizes fluid to produce in the rotation of eddy flow chamber high speed makes density materials different and that do not dissolve each other mutually obtain the equipment that separates.Hydrocyclone owing to simple in structure, volume is little, cost is low and high being widely used in of separative efficiency come the solid phase particles thing that contains in the separating liquid in the industries such as metallurgy, chemical industry, oil.Be used to the 1980s oil-moisture from, the MThew of Britain South_ampton university etc. studied hydrocyclone carry out oil-moisture from the time equipment structural characteristics and the operation requirement that should have, succeeded in developing and can be effectively used to oil-polluted water and carry out the hydrocyclone that de-oiling is handled, and in 1985 in commercial sale., many researchs and improvement once arranged, be not easy very much but will further improve the dried up power efficiency of hydrocyclone of oil-moisture thereafter, its main difficulty has two, the one, oil differs less with the density of water, and centrifugal force suffered in cyclone is more or less the same, and is difficult to separate; The 2nd, in cyclone,, increased the difficulty of separating because the shearing force that the fluid rotation produces easily is chopped into oil droplet littler droplet.In order to improve separative efficiency, France Neyrtec company has developed a kind of Dynaclean shell rotary type cyclone, its shell rotating speed 1500-5000rpm, strengthened centrifugal force, thereby improved separating power, yet this cyclone with shell high speed rotating, structure is all complicated with installation, is difficult to be generalized in the production and uses.A kind of air-flotation type oil-water cyclone separator is arranged again, as shown in Figure 1, in a circular housing tube, be provided with one and have the cylinder of small sieve aperture as the air-distribution grid, the barrel shrond lower end is provided with charging aperture, the cylindrical core rotation that is provided with around the bottom when feed liquid enters upwards, and the air of being made by compressor is entered in the cylindrical shape annular space between shell and the air-distribution grid by the air inlet on the cylinder shell, air is dispersed into micro-bubble through small sieve aperture and enters a center with the feed liquid fast rotational, because air specific weight is little, obvious trend center, and upwards discharge by overflow pipe by the overfall at tube top, and air rotation is when upwards discharging, because the oleophilic function of air is taken the oil droplet in the feed liquid out of together, the water that oil-containing has reduced then tends to the outer ring, is discharged by underflow pipe when rotating up.This device produces the effect that action of centrifugal force and air oleophylic can the dissolved air flotation oil droplet with eddy flow and combines, reached oil-moisture from purpose.But this unit efficiency is not high, and volume moisture content is still arranged in the overflow of discharge, and the structure of this device is also complicated, can not effectively be used in production.
Summary of the invention purpose of the present invention just provides a kind of relatively simple for structure, easy to operate and pressurized dissolved air flotation formula hydraulic cyclone oil-water separation device and method that separative efficiency is high.
Technical conceive of the present invention is: in hydrocyclone, sewage enters cyclone top by the feed pipe at cyclone top with tangential direction as feed liquid, in cyclone, do rotation at a high speed, because the centrifugal force that produces during the feed liquid rotation, pressure in the feed liquid of cyclone high speed rotation is reduced to the center by the outer ring gradually along radial direction, the present invention utilizes this feature, with feed liquid before entering hydrocyclone through pressure air-dissolving pans, jar is squeezed into air with higher pressure hereinto, makes air be dissolved in feed liquid under higher pressure and reaches capacity.The feed liquid that then enters hydrocyclone becomes and contains air and reach saturated feed liquid, when feed liquid when the cyclone high speed is rotated, because the pressure of inner ring reduces, the saturation solubility of air reduces, air is inevitable along with disengaging into micro-bubble, and because air has the feature of oleophylic, small air bubble must carry oil droplet and enter inner ring by the outer ring, when when formation secondary eddy flow upwards in hydrocyclone bottom is up, the oil droplet that carries is separated with feed liquid with air-flotation type, upwards in the overflow pipe of hydrocyclone, discharge by the center at last.Like this, its oil-moisture is greatly improved from ability, make that oil content greatly reduces in the feed liquid that underflow discharges, oil content in the water when significantly reducing discharging very helps environmental protection.
Technical solution of the present invention is: create a kind of pressurized dissolved air flotation formula hydraulic cyclone oil-water separation device, constitute by the feed pump 2, pressure air-dissolving pans 3 and the air-flotation type hydrocyclone 1 that connect successively, air-flotation type hydrocyclone 1 is made up of cylindrical section 8 and first conical section 9 and second conical section 10, feed pipe 4, overflow pipe 7 and underflow outlet 11, and feed pipe 4 adopts the chargings of symmetric double otch.
The diameter of cylindrical section 8 is D
1, the coning angle of first conical section 9 is α, and the coning angle of second conical section 10 is θ, and the diameter of first conical section 9 and second conical section, 10 intersections is D, and overflow pipe 7 diameters are D
0, underflow outlet 11 diameters are D
b, two inlets feed pipe 4 diameters respectively are D
i, wherein, D
1Be 50～100mm, D
1/ D is 1.7～2.2, D
i/ D is 0.25～0.4, D
0/ D is 0.25～0.35, D
b/ D is 0.28～0.45, and α is 18～25 °, and θ is 1.5～3.5 °.
Be provided with out the air sparger 5 of micropore in the pressure air-dissolving pans 3, pans 3 are provided with bleeder pipe 6, with a needle valve pressurize and a fine setting, make it can control to constantly to emit to be absorbed and be dissolved into feed liquid and unnecessary little air.
Use a kind of air-flotation type hydraulic cyclone oil-water separating method of pressurized dissolved air flotation formula hydraulic cyclone oil-water separation device to be: feed liquid by feed pump 2 with 2～5m
3The inlet amount of/h is squeezed into pressure air-dissolving pans 3, air is squeezed in the annular air sparger 5 of pans 3 by compressor, micropore discharge by distributor 5 enters feed liquid, under adding 0.3～0.8MPa meter pressure, dissolve in the feed liquid, the dissolving and unnecessary air is emitted by the bleeder pipe 6 of pans 3 tops, add depress by dissolve in the saturated feed liquid of air by pans 3 through two inlets charging aperture 4 tangentially to enter air-flotation type hydrocyclone 1, feed liquid is rotation at a high speed in air-flotation type hydrocyclone 1, when entering into inner ring, reduce owing to pressure, wherein Rong Xie air is deviate from the microbubble form, and carry in the water oil droplet and moisture from, in air-flotation type hydrocyclone 1, feed liquid and microbubble mix eddy flow to air-flotation type hydrocyclone 1 bottom, the secondary eddy flow that formation moves upward carries oil droplet and rotates up motion by the center and discharge in the overflow pipe 7 of air-flotation type hydrocyclone 1.
The beneficial effect that the present invention reached is: the oil-moisture of cyclone greatly improves from ability, and oil content greatly reduces in the feed liquid of discharging in the underflow, and oil-containing drops to below the 10mg/L, satisfies the requirement of discharge of wastewater, very helps environmental protection.
The present invention is further described below in conjunction with the drawings and specific embodiments for description of drawings.
Fig. 1 is disclosed a kind of air-flotation type oil-water cyclone separator.
Fig. 2 is an equipment flowsheet of the present invention.
Fig. 3 is the two inlets charging aperture diagrammatic sketch of feed pipe of the present invention.
The specific embodiment one air-flotation type hydrocyclone, D
1=70mm, its feed pipe two inlets charging aperture diameter D
i=10mm, the processing oil content is 0.04% feed liquid, inlet amount is 3～4m
3/ h, with feed pump feed liquid is got to the pressure air-dissolving pans, after under the gauge pressure of 0.3～0.4MPa air being dissolved in to reach capacity, enter cyclone, the split ratio of operation is 2～3%, the oil content that obtains to discharge in the underflow reduces to 7～16mg/L, reached discharge standard, oil content is 1.4～2.0% in the overflow of discharge.And when charging was dissolved in without air, the split ratio of operation was 3～4.5%, and oil content is 45～58mg/L in the underflow of discharge, does not reach discharge standard.
Claims (4)
- A pressurized dissolved air flotation formula hydraulic cyclone oil-moisture from device, it is characterized in that, be made of the feed pump (2) that connects successively, pressure air-dissolving pans (3) and air-flotation type hydrocyclone (1), air-flotation type hydrocyclone (1) is made up of with second conical section (10), feed pipe (4), overflow pipe (7) and underflow outlet (11) cylindrical section (8) and first conical section (9).
- 2. a kind of pressurized dissolved air flotation formula hydraulic cyclone oil-moisture according to claim 1 from device, it is characterized in that the diameter of cylindrical section (8) is D 1, the coning angle of first conical section (9) is α, and the coning angle of second conical section (10) is θ, and the diameter of first conical section (9) and second conical section (10) intersection is D, and overflow pipe (7) diameter is D 0, underflow outlet (11) diameter is D b, two inlets feed pipe (4) diameter is D i, wherein, D 1Be 50～100mm, D 1/ D is 1.7～2.2, D i/ D is 0.25～0.4, D 0/ D is 0.25～0.35, D b/ D is 0.28～0.45, and α is 18～25 °, and θ is 1.5～3.5 °.
- 3. a kind of pressurized dissolved air flotation formula hydraulic cyclone oil-moisture according to claim 1 from device, it is characterized in that establish the air sparger (5) that has micropore in the pressure air-dissolving pans (3), pressure air-dissolving pans (3) are provided with bleeder pipe (6).
- 4. use the described a kind of pressurized dissolved air flotation formula hydraulic cyclone oil-moisture of claim 1 from the air-flotation type hydraulic cyclone oil-water separating method of device, it is characterized in that, feed liquid by feed pump (2) with 2～5m 3The inlet amount of/h is squeezed into pressure air-dissolving pans (3), in pressure air-dissolving pans (3), air is squeezed in the annular air sparger (5) by compressor, micropore by distributor (5) is discharged in the feed liquid, under adding 0.2～0.8Mpa gauge pressure, dissolve in the feed liquid, dissolving and unnecessary air is emitted by the bleeder pipe (6) of pressure air-dissolving pans (3) top, add depress by dissolve in the saturated feed liquid of air by pressure air-dissolving pans (3) through feed pipe (4) tangentially to enter air-flotation type hydrocyclone (1), feed liquid is rotation at a high speed in air-flotation type hydrocyclone (1), when entering into inner ring, reduce owing to pressure, air is deviate from the microbubble form, carry in the water oil droplet and moisture from, in air-flotation type hydrocyclone (1), feed liquid and microbubble mix eddy flow to air-flotation type hydrocyclone (1) bottom, the secondary eddy flow that formation moves upward, carry oil droplet and rotate up motion by the center and discharge in the overflow pipe (7) of air-flotation type hydrocyclone (1), the feed liquid that has removed the volume oil droplet is discharged in the underflow outlet (11) of air-flotation type hydrocyclone (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101190240A CN1546196A (en) | 2003-12-08 | 2003-12-08 | Apparatus and method for pressurized air-dissolving and air-floating water powered cyclone water-oil separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101190240A CN1546196A (en) | 2003-12-08 | 2003-12-08 | Apparatus and method for pressurized air-dissolving and air-floating water powered cyclone water-oil separation |
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| CN1546196A true CN1546196A (en) | 2004-11-17 |
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|---|---|---|---|
| CNA2003101190240A Pending CN1546196A (en) | 2003-12-08 | 2003-12-08 | Apparatus and method for pressurized air-dissolving and air-floating water powered cyclone water-oil separation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774928A (en) * | 2012-08-01 | 2012-11-14 | 浙江大学舟山海洋研究中心 | Oil-water separator and application thereof |
| CN102864763A (en) * | 2012-09-11 | 2013-01-09 | 中国石油化工股份有限公司 | Gas dissolving type overflow oil recycling device based on weir type oil collector and method |
| CN104071864A (en) * | 2013-03-25 | 2014-10-01 | 张万友 | Air floatation-eddy flow integrated oil-water separating apparatus |
| CN104071859A (en) * | 2013-03-26 | 2014-10-01 | 张万友 | Mechanical air-dispersing air-floating type hydrocyclone |
| CN104671487A (en) * | 2013-11-27 | 2015-06-03 | 中国石油化工股份有限公司 | Water diversion purification plant and purification method thereof |
| US9169725B1 (en) | 2013-11-10 | 2015-10-27 | John D. Jones | Method of stripping crude oil and hydraulic fracturing fluids from water using a gas sparged hydrocyclone |
| CN105442513A (en) * | 2015-12-04 | 2016-03-30 | 哈尔滨工程大学 | Air-floatation treatment device for recovering spilled oil on sea based on Venturi effect |
| US9975060B2 (en) | 2013-11-10 | 2018-05-22 | John D Jones | Liquid purification system |
| CN110142155A (en) * | 2019-04-22 | 2019-08-20 | 太原理工大学 | A kind of accelerator of cyclone feeding pipe magnetism ore pulp |
| CN111003831A (en) * | 2019-12-31 | 2020-04-14 | 湖南景翌湘台环保高新技术开发有限公司 | Pretreatment equipment and method for grinding oil stains and SS in wastewater |
-
2003
- 2003-12-08 CN CNA2003101190240A patent/CN1546196A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774928B (en) * | 2012-08-01 | 2014-10-08 | 浙江大学舟山海洋研究中心 | Oil-water separator and application thereof |
| CN102774928A (en) * | 2012-08-01 | 2012-11-14 | 浙江大学舟山海洋研究中心 | Oil-water separator and application thereof |
| CN102864763A (en) * | 2012-09-11 | 2013-01-09 | 中国石油化工股份有限公司 | Gas dissolving type overflow oil recycling device based on weir type oil collector and method |
| CN102864763B (en) * | 2012-09-11 | 2014-11-12 | 中国石油化工股份有限公司 | Gas dissolving type overflow oil recycling device based on weir type oil collector and method |
| CN104071864A (en) * | 2013-03-25 | 2014-10-01 | 张万友 | Air floatation-eddy flow integrated oil-water separating apparatus |
| CN104071859A (en) * | 2013-03-26 | 2014-10-01 | 张万友 | Mechanical air-dispersing air-floating type hydrocyclone |
| US9975060B2 (en) | 2013-11-10 | 2018-05-22 | John D Jones | Liquid purification system |
| US9169725B1 (en) | 2013-11-10 | 2015-10-27 | John D. Jones | Method of stripping crude oil and hydraulic fracturing fluids from water using a gas sparged hydrocyclone |
| CN104671487A (en) * | 2013-11-27 | 2015-06-03 | 中国石油化工股份有限公司 | Water diversion purification plant and purification method thereof |
| CN104671487B (en) * | 2013-11-27 | 2016-06-08 | 中国石油化工股份有限公司 | A kind of point water-purification plant and purifying method thereof |
| CN105442513B (en) * | 2015-12-04 | 2017-08-04 | 哈尔滨工程大学 | A kind of marine oil overflow based on Venturi effect reclaims air flotation processing device |
| CN105442513A (en) * | 2015-12-04 | 2016-03-30 | 哈尔滨工程大学 | Air-floatation treatment device for recovering spilled oil on sea based on Venturi effect |
| CN110142155A (en) * | 2019-04-22 | 2019-08-20 | 太原理工大学 | A kind of accelerator of cyclone feeding pipe magnetism ore pulp |
| CN111003831A (en) * | 2019-12-31 | 2020-04-14 | 湖南景翌湘台环保高新技术开发有限公司 | Pretreatment equipment and method for grinding oil stains and SS in wastewater |
| CN111003831B (en) * | 2019-12-31 | 2023-10-27 | 湖南景翌湘台环保高新技术开发有限公司 | Pretreatment equipment and method for oil stains and SS in grinding wastewater |
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