CN102989591A - Energy-saving flotation equipment and energy-saving flotation method - Google Patents
Energy-saving flotation equipment and energy-saving flotation method Download PDFInfo
- Publication number
- CN102989591A CN102989591A CN2012103422839A CN201210342283A CN102989591A CN 102989591 A CN102989591 A CN 102989591A CN 2012103422839 A CN2012103422839 A CN 2012103422839A CN 201210342283 A CN201210342283 A CN 201210342283A CN 102989591 A CN102989591 A CN 102989591A
- Authority
- CN
- China
- Prior art keywords
- flotation cell
- flotation
- shunting
- unaerated
- inflation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
- B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
- D21B1/325—Defibrating by other means of waste paper de-inking devices
- D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paper (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to energy-saving flotation equipment and an energy-saving flotation method, used for separating solids from liquids, and particularly relates to a flotation cell (1) flotation equipment used for separating impurities and ink particles from a cellulosic material suspension. According to the technical scheme of the invention, in the flotation cell (1), a first aerated bypass flow (4) and a second non-aerated bypass flow (3) frontally meet each other. In this way, a turbulent mixing zone (11) is formed. The invention also provides a flotation method performed by the above flotation cell and the above flotation equipment, wherein the flotation cell and the flotation equipment are operated in an energy-saving manner.
Description
Technical field
Be used for from liquid isolate solid matter, especially for the flotation cell of removing foreign matter from fibrous matter suspension and printing color particle in other words floatation equipment consist of theme of the present invention.
Following method for floating also consists of theme of the present invention, this method for floating utilization according to flotation cell of the present invention in other words floatation equipment implement.
Background technology
Flotation is the method for separating of physical-chemical, and this method for separating is applied to different fields.For example deinking-flotation namely is used for from the method for removing foreign matter and printing color particle the fibrous matter suspension that the waste paper preliminary treatment is made particularly.This method is related with the bubble phase that produces suitable quantity and size distribution.Solid matter hydrophobic or that utilize surface reactive material to carry out the hydrophobic processing is carried on the liquid surface by adhering bubble as the dirt (gluing impurity) of printing color particle or viscosity and can be removed as foam there.
Can also sub-elect ore etc. by in useless, the unwanted material by means of flotation.
Known a large amount of different floatation equipments, EP 1 350 888 discloses the floatation equipment with a plurality of charging points, and it is inner and introduce the fibrous matter suspension of inflation via these charging points that these charging points are arranged in flotation cell.These charging points are arranged in the row and have common diffuser and a common deflection plate at this.
Flotation is owing to pump energy aspect high flow rate becomes the intensive process of relative energy.
Disclosed deflection plate is basically served and is flowed to by vertical deflection to level in EP 1 350 888, and this deflection has air and the further seondary effect of mixing of suspension, but has dissipated in the major part of this kinetic energy in the flow turbulent flow.
Therefore the optimization of the minimizing of energy requirement and chamber geometry is to be worth pursuing.
Summary of the invention
Therefore task of the present invention is, flotation cell is provided and says floatation equipment, and this flotation cell and floatation equipment can turn round energy-conservationly, and however can guarantee enough inflations in this flotation cell and floatation equipment.
This task solves by following flotation cell, can carry the first shunting of inflation and the second shunting of unaerated for this flotation cell, and exactly be, so that first shunting of inflating in the flotation cell with liquid filling is pro met with the second shunting of unaerated basically.
Like this inflation with the shunting of unaerated pro each other collision in flotation cell.Deflection plate (Prallplatte) here no longer is set, and more precisely the shunting of unaerated consists of " deflection plate " of the shunting of inflation.The shunting of unaerated must by the charging point inflation of oneself, not need pump energy still less in this way basically.
Each other collision by two shuntings causes the formation of the mixed zone of high turbulent flow.Preferably flow in the flotation cell by the bottom and pro meet with the shunting of unaerated in the shunting of this inflation, the shunting of this unaerated is flow in the flotation cell by top.
For to the first shunting inflation, preferably use self-priming charging point, this charging point is positioned at the outside of flotation cell and is optimum in air inlet and energy requirement (pressure loss).The shunting of unaerated can freely flow in the flotation cell by top or utilize one type nozzle to accelerate.
Flotation cell preferably has sub-circular (rund), the cross section of circular.In the chamber of circle the flow of all directions in other words foam identical path is arranged, this can not cause " non-definition " deflection and can be by adjacent charging point impact at the central charging point at center.
If the cross section of described at least one flotation cell is tapered downwards in vertical direction, be favourable.
The invention still further relates to for the floatation equipment of isolating solid matter from liquid, wherein, floatation equipment has a plurality of according to claim 1 to one of 5 flotation cell.Single flotation cell is connected at this, thereby flotation cell accepts the input channel that pipeline is configured for flotation cell subsequently the preceding.
If single flotation cell is stacked layout, be that tool is advantageous at this.In this " turriform flotation ", accepting stream and can continue simply to flow in the chamber that is under it in flotation cell bottom.Before this first shunting to be inflated is being in flotation cell it under, diverge and be inflated via charging point.
Two differences in height that are stacked between thirty years of age the fluid level of chamber will satisfy enough rates of outflow.Then should only once whole injection stream pump be arrived the highest level.Only have the component of inflation should overcome the resistance of charging point, will use respectively pump for this reason.
Isolate solid matter by flotation at least one flotation cell from liquid, particularly the corresponding method of removing foreign matter and printing color particle also consists of theme of the present invention from fibrous matter suspension.The liquid for the treatment of flotation is divided at least two shuntings at this, and wherein, the first shunting is inflated and the second shunting is not inflated.The first shunting of inflation is pro met with the second shunting of unaerated in the flotation cell of liquid filling basically, thereby consists of the mixed zone of high turbulent flow in this zone.
In the advantageous enforcement of the tool of this method, the first shunting of inflation is flowed vertically upward in flotation cell and is collided with the second shunting of unaerated in flotation cell, and the second shunting of this unaerated vertically flows in the flotation cell from top to bottom.
If the first shunting is inflated via the charging point in the flotation cell outside, is favourable.
Preferably be provided with a plurality of flotation cells, wherein, in each flotation cell, consist of the mixed zone of high turbulent flow, and wherein, consist of second of first shunting of inflation of flotation cell subsequently and unaerated and shunt by the stream of accepting of flotation cell the preceding.
Description of drawings
Present invention is described by accompanying drawing for the below.
Fig. 1 illustrates (side view) according to the signal of flotation cell of the present invention;
Fig. 2 illustrates (side view) according to the signal of floatation equipment of the present invention with a plurality of flotation cells that are stacked layout;
Identical Reference numeral in single figure relates separately to identical member.
The specific embodiment
Shown in Figure 1 according to flotation cell 1 of the present invention.Flotation cell 1 is filled with liquid 2, for example contaminated fibrous stock matter suspension for the treatment of flotation.Flotation cell 1 has circular cross section and makes progress in current example to be expanded conically.Be furnished with foam tank 9 in the zone on flotation cell 1, this foam tank surrounds flotation cell 1 circlewise.
Two shuntings 3 and 14 enter flotation cell 1.These shuntings 3,14 are comprised of the liquid 2 for the treatment of flotation.The first shunting 14 is inflated via charging point 5 usefulness air 15.Charging point 5 can be self-priming charging point for example, and following charging point namely, the liquid for the treatment of flotation in this charging point flow out by nozzle and rely on the Bernoulli effect air amount.
The first shunting 4 of inflation imports flotation cell 1 by sidepiece via the first input channel 20 in other words by the bottom, thereby so that the shunting 4 of inflation overflow from the effusion opening 22 of the first input channel 20 vertically upward.The shunting 3 of unaerated is imported in the flotation cell 1 by top via the second input channel 19.The effusion opening 22 of the effusion opening 21 of the second input channel 19 and the first input channel 20 is relatively arranged.
In operation process, so the mixed zone 11 of high turbulent flow is pro collided and consisted of in the second shunting 3 of the first shunting 4 of inflation and unaerated each other.Zone of silence and exhaust area 12 are positioned under the mixed zone 11 of high turbulent flow.Accept pipeline 23 and be positioned at the following on the bottom of flotation cell 1 of district 12, accept pipeline by this and take out acceptance stream 6.
Collecting region 10 be positioned at high turbulent flow mixed zone 11 on, air can spread and have time enough to construct flotation froth 8 on liquid surface 17 in this accumulation regions.The flotation froth 8 of impurity and the enrichment of printing color particle is gathered in the foam tank 9, overflows 7 by this foam tank discharging.
Fig. 2 illustrates floatation equipment, and a plurality of flotation cells 1 are arranged each other stackedly towerly in this floatation equipment.The second shunting 3 of first of inflation the shunting 4 and unaerated is met in each this flotation cell 1.The acceptance of flotation cell 1 stream 6 consists of the injection 23 of flotation cell 1 subsequently here the preceding.This injects 23 and is divided into the first shunting the 14 and second shunting 3 here.Then the first shunting 14 is charged air 15 by charging point 5.Because the first shunting 14 must overcome certain flow resistance in charging point 5, before charging point 5, be furnished with each pump 13.
In order to satisfy the second shunting enough rates of outflow of 3 of unaerated, the difference in height 16 in the current example in Fig. 2 between two flotation cells 1 that are stacked layout is enough.
Each flotation cell 1 accept be furnished with control valve 24 in the pipeline 23, this control valve is regulated by liquid level regulator 18, can keep constant filler height by such mode in single flotation cell 1.
Form of implementation illustrated in the accompanying drawings only illustrates preferred enforcement of the present invention.The present invention also comprises other form of implementation, and for example single flotation cell 1 is adjacent to arrange in these forms of implementation.Although the shunting 3 of unaerated must be pumped into next chamber by a chamber equally in this chamber-layout, be the head with minimum.
Claims (10)
1. be used for by flotation from liquid isolate solid matter, the flotation cell of removing foreign matter and printing color particle from fibrous matter suspension particularly, it is characterized in that, can carry respectively the first shunting (4) of inflation and the second shunting (3) of unaerated for flotation cell (1), and exactly be, so that basically pro meet with the second shunting (3) of described unaerated in the first shunting (4) of inflation described in the described flotation cell (1) of filling with liquid (2).
2. flotation cell according to claim 1, it is characterized in that, the first shunting (4) of described inflation can be carried via the second input channel (19) via the second shunting (3) of the first input channel (20) conveying and described unaerated, wherein, the effusion opening (22,21) of two described input channels (20,19) is arranged in the described flotation cell (1) oppositely.
3. flotation cell according to claim 2 is characterized in that, the vertical effusion opening (21) that points to upper and described the second input channel (19) of the effusion opening (22) of described the first input channel (20) vertically points to lower.
4. according to claim 1 to one of 3 described flotation cells, it is characterized in that, described flotation cell (1) has sub-circular, the cross section of circular.
5. according to claim 1 to one of 4 described flotation cells, it is characterized in that, the cross section of described flotation cell (1) is tapered downwards in vertical direction.
6. be used for isolating from liquid by flotation the floatation equipment of solid matter, it is characterized in that, described floatation equipment has a plurality of according to claim 1 to one of 5 described flotation cells (1), wherein, with the series connection of single described flotation cell (1), thereby flotation cell (1) accepts the input channel (23) that pipeline (23) consists of flotation cell (1) subsequently the preceding.
7. be used for from liquid, isolating solid matter by flotation at least one flotation cell, the method of removing foreign matter and printing color particle from fibrous matter suspension particularly, it is characterized in that, the liquid (2) for the treatment of flotation is divided at least two shuntings (14,3), wherein, the first shunting (14) is inflated and the second shunting (3) is not inflated, wherein, the first shunting (4) of inflation is pro met with the second shunting (3) of unaerated in the described flotation cell (1) of filling with liquid (2) basically, thereby consists of the mixed zone (11) of high turbulent flow in this zone.
8. method for floating according to claim 7 is characterized in that, the first shunting (4) of described inflation is flowed in described flotation cell (1) vertically upward and the second shunting (3) of described unaerated vertically flows in the described flotation cell (1) from top to bottom.
9. according to claim 7 or 8 described method for floating, it is characterized in that, described the first shunting (14) is via being inflated at the outside charging point (5) of described flotation cell (1).
10. according to claim 7 to one of 9 described method for floating, it is characterized in that, be provided with a plurality of flotation cells (1), wherein, in each flotation cell (1), consist of the mixed zone (11) of described high turbulent flow, and wherein, be configured for second of first shunting (4) of described inflation of flotation cell (1) subsequently and described unaerated by the acceptance stream (6) of flotation cell (1) the preceding and shunt (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1337/2011 | 2011-09-16 | ||
| ATA1337/2011A AT511455B1 (en) | 2011-09-16 | 2011-09-16 | ENERGY SAVING FLOTATION DEVICE AND ENERGY SAVING FLOTATION PROCESS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102989591A true CN102989591A (en) | 2013-03-27 |
| CN102989591B CN102989591B (en) | 2019-05-07 |
Family
ID=47502712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210342283.9A Expired - Fee Related CN102989591B (en) | 2011-09-16 | 2012-09-14 | Energy-efficient floatation equipment and energy-efficient method for floating |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102989591B (en) |
| AT (1) | AT511455B1 (en) |
| DE (1) | DE102012107449B4 (en) |
| FI (1) | FI127403B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096639A (en) * | 2013-04-11 | 2014-10-15 | 安德里特斯公开股份有限公司 | Ventilating device and method with material intake in the injector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989010202A1 (en) * | 1988-04-28 | 1989-11-02 | Erkki Hirvonen | Flotation apparatus |
| US5897772A (en) * | 1995-12-22 | 1999-04-27 | Chiang; Shiao-Hung | Multi-stage flotation column |
| CN2431047Y (en) * | 2000-07-07 | 2001-05-23 | 中国矿业大学（北京校区） | Bidirectionally inflating jet flotation column |
| CN2586537Y (en) * | 2002-10-16 | 2003-11-19 | 王怀法 | Two-stage inflatable micro-foam flotation column apparatus |
| EP1375738A1 (en) * | 1999-02-16 | 2004-01-02 | Voith Paper Patent GmbH | Method for removing impurities from an aqueous fibre suspension |
| CN201692880U (en) * | 2010-06-13 | 2011-01-05 | 中国铝业股份有限公司 | Flotation column without rotary steps |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT411155B (en) | 2002-03-27 | 2003-10-27 | Andritz Ag Maschf | DEVICE FOR SEPARATING SOLIDS FROM LIQUIDS BY FLOTATION |
| DE10327701A1 (en) * | 2003-06-20 | 2005-01-05 | Voith Paper Patent Gmbh | Method and device for flotation of contaminants from an aqueous pulp suspension |
-
2011
- 2011-09-16 AT ATA1337/2011A patent/AT511455B1/en not_active IP Right Cessation
-
2012
- 2012-08-14 DE DE102012107449.6A patent/DE102012107449B4/en not_active Expired - Fee Related
- 2012-09-11 FI FI20125941A patent/FI127403B/en not_active IP Right Cessation
- 2012-09-14 CN CN201210342283.9A patent/CN102989591B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989010202A1 (en) * | 1988-04-28 | 1989-11-02 | Erkki Hirvonen | Flotation apparatus |
| US5897772A (en) * | 1995-12-22 | 1999-04-27 | Chiang; Shiao-Hung | Multi-stage flotation column |
| EP1375738A1 (en) * | 1999-02-16 | 2004-01-02 | Voith Paper Patent GmbH | Method for removing impurities from an aqueous fibre suspension |
| CN2431047Y (en) * | 2000-07-07 | 2001-05-23 | 中国矿业大学（北京校区） | Bidirectionally inflating jet flotation column |
| CN2586537Y (en) * | 2002-10-16 | 2003-11-19 | 王怀法 | Two-stage inflatable micro-foam flotation column apparatus |
| CN201692880U (en) * | 2010-06-13 | 2011-01-05 | 中国铝业股份有限公司 | Flotation column without rotary steps |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096639A (en) * | 2013-04-11 | 2014-10-15 | 安德里特斯公开股份有限公司 | Ventilating device and method with material intake in the injector |
Also Published As
| Publication number | Publication date |
|---|---|
| AT511455A4 (en) | 2012-12-15 |
| DE102012107449A1 (en) | 2013-03-21 |
| AT511455B1 (en) | 2012-12-15 |
| FI127403B (en) | 2018-05-15 |
| FI20125941A (en) | 2013-03-17 |
| DE102012107449B4 (en) | 2018-10-04 |
| CN102989591B (en) | 2019-05-07 |
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