CN102971066B - Mixed method and mixing apparatus - Google Patents
Mixed method and mixing apparatus Download PDFInfo
- Publication number
- CN102971066B CN102971066B CN201180033346.6A CN201180033346A CN102971066B CN 102971066 B CN102971066 B CN 102971066B CN 201180033346 A CN201180033346 A CN 201180033346A CN 102971066 B CN102971066 B CN 102971066B
- Authority
- CN
- China
- Prior art keywords
- fluid
- main flow
- nozzle
- flow
- chemicals
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 150
- 239000000126 substance Substances 0.000 claims abstract description 39
- 239000007921 spray Substances 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000013505 freshwater Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 description 11
- 230000008021 deposition Effects 0.000 description 10
- 238000005507 spraying Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000834 fixative Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31422—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the axial direction only
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Accessories For Mixers (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to a kind of for being mixed into by the method in the main flow (6) of conduit wall (5) limited boundary and equipment by multiple fluid (1,2), in described multiple fluid, at least one fluid (2) is formed by chemicals at least in part.Here, the position entering in main flow (6) than first fluid (1) by first fluid (1) is injected to main flow (6) before the second fluid (2) at least in part on the flow direction of main flow (6) (7) and the position that makes second fluid (2) enter in main flow (6) achieves chemicals (7) mixing the most completely in main flow (6) further from conduit wall (5).
Description
Technical field
The present invention relates to a kind of method for being mixed in the main flow by conduit wall limited boundary by multiple fluids that at least one of which fluid is formed at least in part by chemicals.
At least one first fluid that the present invention also relates to be formed at least a part of which second fluid at least in part by chemicals is mixed into the mixing apparatus in the main flow by conduit wall limited boundary with at least one second fluid by each nozzle with nozzle opening, especially for the mixing apparatus performing described method.
Background technology
Chemicals, described chemicals is day by day used to have impact on manufacture process and/or the quality of web of fiber energetically when manufacturing fibrous suspension.Chemicals is mainly fixative or retention agents.When directing fluid in main flow, particularly in the web of fiber suspension of flowing, existing basic problem is mixing as well as possible.Here, degree of mixing is also relevant to chemicals demand.
For minimizing the use of chemicals, have been working on for a long time improving mixing, but this may be entirely satisfactory so far not yet.Here, the problem particularly deposition in spraying into region.
Summary of the invention
Therefore, the technical problem to be solved is to ensure chemicals mixing the most completely in main flow in the case of avoiding deposition.
According to the present invention, this technical problem solves in terms of method in the following way: first fluid was injected in main flow at least in part on the flow direction of main flow before second fluid, and makes position that position that second fluid enters in main flow enters in main flow than first fluid further from conduit wall.Because the second fluid partly formed by chemicals and conduit wall are injected in main flow, so having inhibited deposition in spraying into region at this and on conduit wall with having distance.Additionally, this also supports mixing, because mixing is removed from the edge of main flow.
Additionally, the mixed flow produced after first fluid is injected to main flow is at the flow direction upper deflecting of main flow, and the most at least wrap up in around Flow in Nozzle, and the most also wrap up in and flow around second fluid nozzle opening, this also prevents deposition.Additionally, wrap up in the flowing around second fluid nozzle opening to protect chemicals when escapeing in main flow not by strong load.Its result is that two fluids mix with the strong of main flow.
By in the case of manufacturing the main flow that the fibrous suspension of paper web, board web, tissue webs or other web of fiber is formed, the present invention provides particular advantage in terms of mixing.
The most also the application in the main flow formed by process water, fresh water or the like.
Here, the fluid being mixed into can be formed by chemicals, fibrous suspension or water, wherein depend on type and the effect of chemicals, described in the fluid that is mixed into also can be mixed into fibrous suspension or water in advance.
In if the other fluid in addition to second fluid formed by chemicals at least in part should being injected to main flow and mixing, the most advantageously first fluid was injected in main flow at least in part on the flow direction of main flow before other fluid, and the in-position that other fluid is in main flow than first fluid in-position in main flow further from conduit wall.This causes significantly simplifying, because support second fluid and the mixing of other fluid at this first fluid simultaneously.
In terms of the type of chemicals and effect of fluid, can the nozzle opening of advantageously second fluid and other fluid be arranged in side by side on the flow direction of main flow.According to desired mixability and eddy current degree, this fluid in-position in main flow can have same or different distance away from conduit wall.The nozzle opening of second fluid and the other fluid distance away from conduit wall is between 5 millimeters and the 10% of the cross-sectional dimension of main flow.
Certainly, it is possible to have the advantage that is that the in-position of second fluid encloses the in-position of other fluid or for the nozzle of other fluid.In the first situation, the in-position of fluid is arranged side by side, and in the case of other, the in-position of other fluid is more farther than residing for the in-position of second fluid in main flow.
For supporting the mixing of fluid and main flow with higher eddy current, fluid or the spray nozzle sent from nozzle should become the angle between the angle between 10 ° to 170 °, preferably one-tenth 70 ° to 110 ° to be injected in main flow with the flow direction of main flow.
In terms of mixing apparatus, it is critical that the nozzle of second fluid is extend in main flow from conduit wall by the nozzle opening of first fluid.Its result is first fluid and main flow forms mixed flow, and described mixed flow is to spray into direction and the durection component on the flow direction of main flow is wrapped up in and flowed around its nozzle opening around second fluid Flow in Nozzle and the most also wrapping up in.This mixed flow prevents the deposition on conduit wall and can be from spraying into that second fluid sends, and this external protects chemicals when being injected to by chemicals in main flow.This mixed flow promotes second fluid mixing in main flow.
For simplifying structure, and also for avoiding the deposition on the nozzle of first fluid, the nozzle opening of first fluid should form plane with described conduit wall as far as possible as far as possible near conduit wall.
As previously mentioned, the other fluid formed by chemicals at least in part also can be injected in main flow.
Here, the nozzle of second fluid can be incorporated in main flow advantageous by the nozzle opening for different or identical fluids with the nozzle of first fluid.The nozzle opening of second fluid and the first fluid distance away from conduit wall is identical or different at this.
The most favourable structure is, the nozzle of second fluid and the nozzle of other fluid extend in main flow from conduit wall commonly by the nozzle opening of first fluid.Here, the nozzle opening of the nozzle opening of second fluid and other fluid on the flow direction of main flow to be arranged in juxtaposition with same or different distance away from conduit wall.But the nozzle of fluid that also can be the most other is extend in main flow by the nozzle opening of second fluid, and wherein nozzle opening has same or different distance away from conduit wall.
Requirement, the type of fluid and the structure of conduit wall according to mixing and the structure of channel cross-section, nozzle opening can have round or polygonal cross section.Nozzle also can medially or prejudicially pass nozzle opening.
In addition to the parameter of main flow, the effective range of spray nozzle depends basically on the fluid pressure at nozzle opening, bundle face and spray nozzle change over its length.Lower fluid pressure causes the reduction in main flow of the effective range of spray nozzle such as the strong extension of spray nozzle.This provides the probability of the effective range affecting spray nozzle with desired form.
Especially, depend on the intensity of main flow, spray nozzle can be tilted relative to the flow direction of main flow, preferably tilt or be perpendicular to the flow direction orientation of main flow against this flow direction.
For minimizing manufacturing cost, and also it has been the flow behavior of equilibrium, it is advantageous that make that be there is round, particularly circular cross section by the main flow of conduit wall limited boundary.
Certainly, in certain application, use the cross section of polygonal particularly rectangle.This is also specifically adapted for the situation guiding the boundary wall of main flow upwards to open.
Accompanying drawing explanation
Hereinafter explain in detail the present invention according to multiple embodiments.In the accompanying drawings, Fig. 1 to Fig. 4 schematically shows the cross section by different mixing apparatus.
Detailed description of the invention
The mixing apparatus illustrated at this includes the main flow 6 of fibrous suspension for being mixed into by multiple fluids 1,2,3,4, described main flow 6 is directed into the flow box for manufacturing the particularly machine of the web of fiber of paper web in tubular passage, and have 0.05% to 7.0% material density, the material density of particularly 0.2% to 2.5%.
Some fluids 2,3 are formed by the chemicals of particularly retention agents at least in part at this, such as polyacrylamide, polyvinyl lactam, polyethylene glycol oxide, fixative, or are formed by micron particle the most at least in part, such as bentonite or silicate.For avoiding the thermal shock when it sprays into of this chemicals, it is advantageous that make its temperature consistent with the temperature of main flow 6, be i.e. typically heated.
Here, the effect completely of this chemicals is also mixed into by force precondition with fluid 2,3 in main flow 6.
But fluid 1,2,3,4 can the most also be formed by fibrous suspension or water (process water or fresh water).If fluid 1,4 is fully formed by fibrous suspension or water, the most described fluid is essentially available in main flow 6 being formed turbulent flow, and if water then for the dilution of main flow 6.
Certainly, it is possible to make the fluid 1,2,3,4 including fibrous suspension or water be mixed into chemicals before spraying into main flow 6.This premixing is occasionally possible, if the reaction in advance or be not concerned about without obvious chemicals thus causes deposition.Its result is the mixability also improving corresponding chemicals in main flow 6.
In mixing apparatus shown in the accompanying drawings, main flow 6 is by being guided by the passage with annular cross section of boundary wall 5 limited boundary.Here, for the circumference that multiple mixing apparatus that fluid 1,2,3,4 is mixed in main flow 6 are preferably evenly distributed in passage.
The structure of the mixing apparatus illustrated in FIG is very simple, and is substantially formed by two nozzles 11,12, and first fluid 1 and second fluid 2 are injected in main flow 6 by described nozzle transverse to the flow direction 7 of main flow 6.Here, at least second fluid 2 is partly formed by chemicals.Here, crucially the nozzle opening 8 of the nozzle 11 of first fluid 1 is in the plane of conduit wall 5, this prevent the deposition in this entrance region of fluid 1.And the nozzle 12 of second fluid 2 is medially extend in main flow 6 by the nozzle opening 8 of the nozzle 11 of first fluid 1.Therefore, the nozzle opening 9 of the nozzle 12 of second fluid 2 is in main flow 6 the most relatively deeply, and the most remote away from conduit wall 5.Its advantage is to clearly result in deposition in the entrance region in main flow 6 due to the chemicals of second fluid 2, but prevents depositing here by stretching out in main flow 6.Additionally, first fluid 1 define when being injected in main flow 6 with main flow 6 on flow direction 7 and the mixing of component on flow direction 7 so that nozzle 12 and the spray nozzle with second fluid 2 sent by nozzle 12 are wrapped up in and are flowed around this mixed flow.This also prevents deposition, protect second fluid 2 when second fluid 2 escape to main flow 6, and cause the strong of two fluids 1,2 and main flow 6 but shielded mix.
In contrast, Fig. 2 shows mixing apparatus, and wherein second fluid 2 and other fluid 3 are formed by chemicals at least in part, and the flow direction 7 being also perpendicularly to main flow 6 is injected in main flow 6.Spraying into of two fluids 2,3 is carried out by nozzle 12,13, and described nozzle 12,13 is extend in main flow 6 by conduit wall 5.Here, nozzle 12,13 is guided by the nozzle opening 8,15 being in the plane of conduit wall 5 respectively according to the principle described in Fig. 1.First fluid 1 is arrived in main flow 6 by the nozzle 11 with nozzle opening 8, and other fluid 4 is injected in main flow 6 by the nozzle 14 with nozzle opening 15.
As a result of which it is, first fluid 1 is wrapped up in and flowed around second fluid 2 when spraying into, and the 4th fluid 4 is wrapped up in and is flowed around the 3rd fluid 3.
Such as, at the nozzle opening 9,16 of this nozzle 12,13 away from conduit wall 5 apart from identical.Addedly, also there is the separates walls 10 reaching in main flow 6 between the nozzle opening 8,15 of nozzle 11,14, this prevent the mixing immediately of two fluids 1,4 of this nozzle 11,14.
In the structure illustrated in figure 3, second fluid 2 and the nozzle 12,13 with the other fluid 3 of at least one chemicals are guided by the nozzle opening 8 of the common nozzle 11 for first fluid 1.Correspondingly, the spray nozzle that the mixed flow by being formed when first fluid 1 enters in main flow 6 is wrapped up in around two nozzles 12,13 and with two fluids 2,3 flows.Here, nozzle 13 stretches out farther than other nozzle 12 in main flow 6, this may result in other eddy current and promotes mixing.
Three fluids 1,2,3 are perpendicular to flow direction 7 and are mixed in main flow 6 by the mixing apparatus according to Fig. 4.Here, the nozzle 12 that feature is second fluid 2 is extend in main flow 6 by the nozzle opening 8 of the nozzle 11 of first fluid 1, and the nozzle 13 of the 3rd fluid 3 is extend in main flow 6 by the nozzle opening 9 of the nozzle 12 of second fluid 2.Here, the nozzle opening 16 of the nozzle 3 of the 3rd fluid 3 than the nozzle opening 9 of the nozzle 12 of second fluid 2 further from conduit wall 5.Thus, create second fluid 2 to be wrapped up in around flowing and the 3rd fluid 3 wrapping up in around flowing by second fluid 2 when spraying into by first fluid 1 when spraying into.
Wrap up in and especially protect, around flowing, the long-chain chemicals that chain is the longest, because this chemicals is formed and the strong load of function by damaging it when being injected in main flow 6.
By with this attainable strong and shielded mixing, chemicals demand can be minimized significantly.
For forming sufficient spray nozzle in main flow 6, fluid 1,2,3,4 should be injected in main flow 6 with the pressure between 1.5 to 10 bars existing at main flow 6.
Present invention achieves effectively being mixed into and mixing of multiple chemicals, even if there is the highest quantity ratio between chemicals and main flow.
Claims (13)
- null1. one kind is used for multiple fluid (1、2、3、4) it is mixed into by the method in the main flow (6) of conduit wall (5) limited boundary，In described multiple fluid, at least one fluid is formed by chemicals at least in part，Wherein，First fluid (1) was injected in main flow (6) at least in part on the flow direction of main flow (6) (7) before second fluid (2)，And second fluid (2) enters into position that position in main flow (6) enters in main flow (6) than first fluid (1) further from conduit wall (5)，It is characterized in that，The other fluid (3) formed by chemicals at least in part is injected in main flow (6)，First fluid (1) was injected in main flow (6) at least in part on the flow direction of main flow (6) (7) before described other fluid (3)，And described other fluid (3) enters position that position in main flow (6) enters in main flow (6) than first fluid (1) further from conduit wall (5).
- Method the most according to claim 1, it is characterised in that second fluid (2) is formed by chemicals at least in part.
- Method the most according to claim 1 and 2, it is characterised in that main flow (6) is formed by the fibrous suspension being used for manufacturing paper web, board web, tissue webs or other web of fiber.
- Method the most according to claim 1 and 2, it is characterised in that main flow (6) is formed by process water or fresh water.
- Method the most according to claim 1, it is characterized in that, the mixed flow formed when first fluid (1) is injected to main flow (6) is wrapped up at least in part when second fluid (2) sprays into and is flowed around second fluid (2).
- Method the most according to claim 1, it is characterised in that fluid (1,2,3,4) becomes the angle between 10 ° to 170 ° to be injected in main flow (6) with the flow direction (7) of main flow (6).
- 7. one kind at least one first fluid (1) that at least a part of which second fluid (2) is formed by chemicals at least in part and at least one second fluid (2) pass through each one with nozzle opening (8, 9) nozzle (11, 12) it is incorporated into by the mixing apparatus in the main flow (6) of conduit wall (5) limited boundary, wherein, the nozzle (12) of second fluid (2) stretches in main flow (6) by the nozzle opening (8) of first fluid (1) by conduit wall (5), it is characterized in that, the other fluid (3) formed by chemicals at least in part is injected in main flow (6) by other nozzle (13) respectively, and the nozzle (13) of other fluid (3) is extend in main flow (6) by conduit wall (5) by the nozzle opening (8) of first fluid (1).
- Equipment the most according to claim 7, it is characterised in that the nozzle opening (8) of first fluid (1) is as far as possible near conduit wall (5).
- 9. according to the equipment described in claim 7 or 8, it is characterised in that the nozzle (13) of other fluid (3) is extend in main flow (6) by the nozzle opening (9) of second fluid (2).
- 10. according to the equipment described in claim 7 or 8, it is characterized in that, the nozzle (12,13) of second fluid (2) and other fluid (3) is extend in main flow (6) by conduit wall (5) by different nozzle openings (8,15).
- 11. equipment according to claim 7, it is characterised in that the spray nozzle sent by nozzle (12,13,14,15) is intersected with the flow direction (7) of main flow (6) with the angle between 10 ° to 170 °.
- 12. equipment according to claim 7, it is characterised in that nozzle (12,13) is medially through the nozzle opening (8,9,15) of another nozzle (11,12,14).
- 13. equipment according to claim 7, it is characterised in that nozzle (12,13) is prejudicially through the nozzle opening (8,9,15) of another nozzle (11,12,14).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010028573A DE102010028573A1 (en) | 2010-05-05 | 2010-05-05 | mixing process |
| DE102010028573.0 | 2010-05-05 | ||
| PCT/EP2011/056123 WO2011138162A1 (en) | 2010-05-05 | 2011-04-18 | Mixing process and mixing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102971066A CN102971066A (en) | 2013-03-13 |
| CN102971066B true CN102971066B (en) | 2016-08-03 |
Family
ID=44259645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180033346.6A Expired - Fee Related CN102971066B (en) | 2010-05-05 | 2011-04-18 | Mixed method and mixing apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2566611B1 (en) |
| CN (1) | CN102971066B (en) |
| DE (1) | DE102010028573A1 (en) |
| WO (1) | WO2011138162A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101959934B1 (en) * | 2010-09-28 | 2019-03-19 | 다우 글로벌 테크놀로지스 엘엘씨 | Reactive flow static mixer with cross-flow obstructions |
| FI20125338L (en) | 2012-03-26 | 2013-09-27 | Wetend Technologies Oy | Method and device for mixing two chemicals of opposite electrical charge in a process fluid flow |
| CN103212320B (en) * | 2013-03-19 | 2015-04-29 | 重庆科技学院 | Vertical three-nozzle liquid static mixer |
| WO2016015991A1 (en) | 2014-07-29 | 2016-02-04 | Voith Patent Gmbh | Method and device for dosing and mixing at least one fluidic medium into a process stream |
| DE102014015036A1 (en) * | 2014-10-09 | 2016-04-28 | Steinmüller Babcock Environment Gmbh | Oxidation tank and method for treating effluent water of a seawater scrubber |
| CN112127191A (en) * | 2020-09-28 | 2020-12-25 | 新晃县自强纸业有限责任公司 | Conveying pipeline for producing corrugated medium paper by using waste paper box |
| CN112211019A (en) * | 2020-09-28 | 2021-01-12 | 新晃县自强纸业有限责任公司 | Method for producing corrugated medium paper by using waste paper box |
| CN116377165A (en) * | 2023-03-22 | 2023-07-04 | 江苏青云机械有限公司 | Technology for stainless steel casting with strong antibacterial property |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070251888A1 (en) * | 2004-07-15 | 2007-11-01 | Wetend Technologies Oy | Method and Apparatus for Feeding Chemical Into a Liquid Flow |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE158356T1 (en) * | 1994-05-13 | 1997-10-15 | Voith Sulzer Papiermasch Gmbh | HEADBOX FOR A PAPER MACHINE WITH LOCAL MIXING OF FLUID |
-
2010
- 2010-05-05 DE DE102010028573A patent/DE102010028573A1/en not_active Withdrawn
-
2011
- 2011-04-18 EP EP11717982.0A patent/EP2566611B1/en not_active Not-in-force
- 2011-04-18 WO PCT/EP2011/056123 patent/WO2011138162A1/en active Application Filing
- 2011-04-18 CN CN201180033346.6A patent/CN102971066B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070251888A1 (en) * | 2004-07-15 | 2007-11-01 | Wetend Technologies Oy | Method and Apparatus for Feeding Chemical Into a Liquid Flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102971066A (en) | 2013-03-13 |
| EP2566611B1 (en) | 2014-06-11 |
| EP2566611A1 (en) | 2013-03-13 |
| DE102010028573A1 (en) | 2011-11-10 |
| WO2011138162A1 (en) | 2011-11-10 |
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Granted publication date: 20160803 |