CN2732716Y - Pressure dissolved air floatation type hydraulic rotary-flow oil and water separator - Google Patents
Pressure dissolved air floatation type hydraulic rotary-flow oil and water separator Download PDFInfo
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- CN2732716Y CN2732716Y CN 200320105941 CN200320105941U CN2732716Y CN 2732716 Y CN2732716 Y CN 2732716Y CN 200320105941 CN200320105941 CN 200320105941 CN 200320105941 U CN200320105941 U CN 200320105941U CN 2732716 Y CN2732716 Y CN 2732716Y
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- air
- oil
- dissolved air
- pipe
- hydrocyclone
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000005188 flotation Methods 0.000 claims description 16
- 238000009300 dissolved air flotation Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract description 25
- 238000000926 separation method Methods 0.000 abstract description 12
- 238000007599 discharging Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 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
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 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
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a pressure dissolved air floatation type hydraulic rotary-flow oil and water separator, belonging to the technical field of the oil and water separation. The utility model has the advantages of simpler structure, convenient operation and high separation efficiency. The device comprises a charging pump 2, a pressure dissolved air surge tank 3 and an air floatation hydraulic cyclone 1, which are successively connected by pipes. The air floatation hydraulic cyclone 1 comprises a cylindrical segment 8, a first conical segment 9, a second conical segment 10 and an underflow outlet pipe 11, which are successively connected. The cylindrical segment 8 is provided with an overflow pipe 7 and a feed pipe 4 connected with the pressure dissolved air surge tank 3. The pressure dissolved air surge tank 3 is provided with an air distributor 5 opened a micro-pore, and the surge tank 3 is provided with a bleeder pipe 6. The utility model has the advantages that the oil and water operation ability of the cyclone is considerably improved, and the oil content in the exhausted feed liquid in the underflow is largely decreased. The oil content is decreased to lower than 10mg/L, which satisfies the request of the discharging of the waste water, so the device can be used in the environmental protection and the sewage recycling.
Description
Technical field the utility model belongs to oil-water separation technology field.Be particularly related to a kind of pressurized dissolved air flotation formula hydrocyclone equipment of oil-water sepn.
Background technology oily water separation is the major issue in the oily 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 isolating equipment.Hydrocyclone owing to simple in structure, volume is little, cost is low and high being widely used in of separation efficiency come the solid phase particles thing that contains in the separating liquid in the industries such as metallurgy, chemical industry, oil.To the 1980s, be used to oil-water sepn, the MThew of Britain South_ampton university etc. has studied equipment structural characteristics and the operational requirement that hydrocyclone should have when carrying out oil-water sepn, succeeded in developing and can be effectively used to oily(waste)water and carry out the hydrocyclone that de-oiling is handled, and in 1985 in commercial sale., many researchs and improvement once arranged, but the separation efficiency that will further improve oil-water sepn hydrocyclone is not easy very thereafter, its main difficulty has two, the one, oil differs less with the density of water, and centrifugal force suffered in swirler is more or less the same, and is difficult to separate; The 2nd, in swirler,, increased isolating difficulty because the shearing force that the fluid rotation produces easily is chopped into oil droplet littler droplet.In order to improve separation efficiency, France Neyrtec company has developed a kind of Dynaclean shell rotary type swirler, its shell rotating speed 1500-5000rpm, strengthened centrifugal force, thereby improved separating power, yet this swirler 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 opening for feed, 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 round shape annular space between shell and the air distribution grid by the inlet mouth 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 upflow tube by the overflow port 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, and has reached the purpose of oil-water sepn.But this plant 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.
The summary of the invention the purpose of this utility model just provides a kind of relatively simple for structure, easy to operate and pressurized dissolved air flotation formula hydrocyclone oil-water separation device that separation efficiency is high.
Technical conceive of the present utility model is: in hydrocyclone, sewage enters swirler top by the feed-pipe at swirler top with tangential direction as feed liquid, in swirler, make high speed rotating, because the centrifugal force that produces during the feed liquid rotation, pressure in the feed liquid of swirler high speed rotation is reduced to the center by the outer ring gradually along radial direction, the utility model utilizes this feature, with feed liquid before entering hydrocyclone through pressure air-dissolving tundish, 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 swirler 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 lipophilic feature, small air filled cavity 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 upflow tube of hydrocyclone, discharge by the center at last.Like this, its oil-water sepn ability is greatly improved, make that oleaginousness greatly reduces in the feed liquid that underflow discharges, oleaginousness in the water when significantly reducing discharging very helps environmental protection.
Technical solution of the present utility model is: a kind of pressurized dissolved air flotation formula hydrocyclone oil-water separation device is made of the fresh feed pump 2 that connects successively with pipeline, pressure air-dissolving tundish 3 and air-flotation type hydrocyclone 1; Air-flotation type hydrocyclone 1 is made of the cylindrical section 8 and first conical section 9, second conical section 10 and the underflow outlet pipe 11 that connect successively; Cylindrical section 8 is provided with upflow tube 7 and the feed-pipe 4 that is connected pressure air-dissolving tundish 3; Feed-pipe 4 adopts the charging of symmetric double otch.
The diameter of cylindrical section 8 is D
1, the cone angle of first conical section 9 is α, and the cone 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 upflow tube 7 diameters are D
0, underflow outlet pipe 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-distributor 5 of micropore in the pressure air-dissolving tundish 3, tundish 3 are provided with eduction 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.
Air-distributor 5 is annulars, makes with the titanium pipe, becomes small air distribution micropore with the laser perforating on it.
Use a kind of air-flotation type hydrocyclone oil-water separating method of pressurized dissolved air flotation formula hydrocyclone oil-water separation device to be: feed liquid by fresh feed pump 2 with 2～5m
3The inlet amount of/h is squeezed into pressure air-dissolving tundish 3, air is squeezed in the annular air-distributor 5 of tundish 3 by compressor, micropore discharge by sparger 5 enters feed liquid, under adding 0.3～0.8MPa gauge pressure, dissolve in the feed liquid, the dissolving and unnecessary air is emitted by the eduction pipe 6 of tundish 3 tops, add depress by dissolve in the saturated feed liquid of air by tundish 3 through two inlets opening for feed 4 tangentially to enter air-flotation type hydrocyclone 1, feed liquid is high speed rotating in air-flotation type hydrocyclone 1, when entering into inner ring, reduce owing to pressure, wherein the dissolved air is deviate from the microbubble form, and carry oil droplet and water sepn in the water, 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 upflow tube 7 of air-flotation type hydrocyclone 1.
The beneficial effect that the utility model reached is: the oil of swirler-water sepn ability greatly improves, and oleaginousness 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.
Description of drawings further specifies the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is disclosed a kind of air-flotation type oil-water cyclone separator.
Fig. 2 is an equipment flowsheet of the present utility model.
Fig. 3 is the two inlets opening for feed diagrammatic sketch of the utility model feed-pipe.
A kind of pressurized dissolved air flotation formula of embodiment hydrocyclone oil-water separation device is made of the fresh feed pump 2 that connects successively with pipeline, pressure air-dissolving tundish 3 and air-flotation type hydrocyclone 1; Air-flotation type hydrocyclone 1 is made of cylindrical section 8 and first conical section 9, second conical section 10 and the underflow outlet pipe 11 of welding successively; Cylindrical section 8 is provided with upflow tube 7 and the feed-pipe 4 that is connected pressure air-dissolving tundish 3; Feed-pipe 4 adopts the charging of symmetric double otch.
The diameter of cylindrical section 8 is D
1, the cone angle of first conical section 9 is α, and the cone 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 upflow tube 7 diameters are D
0, underflow outlet pipe 11 diameters are D
b, two inlets feed-pipe 4 diameters respectively are D
i, wherein, D
1=70mm, D
i=10mm, the processing oleaginousness is 0.04% feed liquid, inlet amount is 3～4m
3/ h, with fresh feed pump feed liquid is got to the pressure air-dissolving tundish, after under the gauge pressure of 0.3～0.4MPa air being dissolved in to reach capacity, enter swirler, the splitting ratio of operation is 2～3%, the oleaginousness that obtains to discharge in the underflow reduces to 7～16mg/L, reached emission standard, oleaginousness is 1.4～2.0% in the overflow of discharge.And when charging was dissolved in without air, the splitting ratio of operation was 3～4.5%, and oleaginousness is 45～58mg/L in the underflow of discharge, does not reach emission standard.
Claims (3)
1. the device of a pressurized dissolved air flotation formula hydrocyclone oil-water sepn, it is characterized in that, constitute by fresh feed pump that connects successively with pipeline (2) and air-flotation type hydrocyclone (1), air-flotation type hydrocyclone (1) is made of the cylindrical section (8) that connects successively and first conical section (9), second conical section (10) and underflow outlet pipe (11), and cylindrical section (8) is provided with upflow tube (7) and the feed-pipe that is connected pressure air-dissolving tundish (3) (4).
2. the device of a kind of pressurized dissolved air flotation formula hydrocyclone oil-water sepn according to claim 1 is characterized in that, the diameter of the cylindrical section (8) of air-flotation type hydrocyclone (1) is D
1, the cone angle of first conical section (9) is α, and the cone 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 upflow tube (7) diameter is D
0, underflow outlet pipe (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. the device of a kind of pressurized dissolved air flotation formula hydrocyclone oil-water sepn according to claim 1, it is characterized in that, the air-distributor (5) that has micropore is set in the pressure air-dissolving tundish (3), and pressure air-dissolving tundish (3) are provided with eduction pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105941 CN2732716Y (en) | 2003-12-08 | 2003-12-08 | Pressure dissolved air floatation type hydraulic rotary-flow oil and water separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105941 CN2732716Y (en) | 2003-12-08 | 2003-12-08 | Pressure dissolved air floatation type hydraulic rotary-flow oil and water separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2732716Y true CN2732716Y (en) | 2005-10-12 |
Family
ID=35068559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320105941 Expired - Fee Related CN2732716Y (en) | 2003-12-08 | 2003-12-08 | Pressure dissolved air floatation type hydraulic rotary-flow oil and water separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2732716Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267734A (en) * | 2010-06-04 | 2011-12-07 | 中国石油大学(华东) | Enclosed circulating air floatation method and apparatus |
| CN102513226A (en) * | 2011-12-28 | 2012-06-27 | 昆明理工大学 | Method and equipment for increasing high-concentration classification efficiency of hydrocyclone |
| CN104071864A (en) * | 2013-03-25 | 2014-10-01 | 张万友 | Air floatation-eddy flow integrated oil-water separating apparatus |
| CN106629957A (en) * | 2016-12-16 | 2017-05-10 | 苏州聚智同创环保科技有限公司 | Low-shearing rotational flow air flotation device for removing suspended matters |
| CN106946378A (en) * | 2017-04-20 | 2017-07-14 | 苏州聚智同创环保科技有限公司 | A kind of processing unit of emulsified oil-containing waste water |
-
2003
- 2003-12-08 CN CN 200320105941 patent/CN2732716Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267734A (en) * | 2010-06-04 | 2011-12-07 | 中国石油大学(华东) | Enclosed circulating air floatation method and apparatus |
| CN102267734B (en) * | 2010-06-04 | 2013-10-16 | 中国石油大学(华东) | Enclosed circulating air floatation method and apparatus |
| CN102513226A (en) * | 2011-12-28 | 2012-06-27 | 昆明理工大学 | Method and equipment for increasing high-concentration classification efficiency of hydrocyclone |
| CN104071864A (en) * | 2013-03-25 | 2014-10-01 | 张万友 | Air floatation-eddy flow integrated oil-water separating apparatus |
| CN106629957A (en) * | 2016-12-16 | 2017-05-10 | 苏州聚智同创环保科技有限公司 | Low-shearing rotational flow air flotation device for removing suspended matters |
| CN106946378A (en) * | 2017-04-20 | 2017-07-14 | 苏州聚智同创环保科技有限公司 | A kind of processing unit of emulsified oil-containing waste water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |