CN101791494B - Defoaming method adopting porous ceramics - Google Patents
Defoaming method adopting porous ceramics Download PDFInfo
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- CN101791494B CN101791494B CN 201010152892 CN201010152892A CN101791494B CN 101791494 B CN101791494 B CN 101791494B CN 201010152892 CN201010152892 CN 201010152892 CN 201010152892 A CN201010152892 A CN 201010152892A CN 101791494 B CN101791494 B CN 101791494B
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Abstract
The invention belongs to the technical fields of chemical engineering production, civil production and living, and relates to a defoaming method adopting porous ceramics. The method is characterized in that: the porous ceramics which are subjected to hydrophobic treatment and have an aperture smaller than the diameter of foams are adopted; the placement mode is selected according to the orientation for generating the foams and the flowing direction of fluid, so that the foams are torn and broken in the process of flowing and running through the porous ceramics; and finally the defoaming is realized. The method adopts the defoaming mode, can fully realize that the foams are torn and broken in the process of running through the porous ceramics, and finally realizes defoaming. The technology has universal applicability in the fields with defoaming requirement in production and living, is safe and environment-friendly, and has low cost and convenient and simple operation.
Description
Technical field
The invention belongs to Chemical Manufacture, civilian production and life technical field, particularly all kinds of solution or fluid solution inner generation bubble or surface and produce the field that a large amount of foams need to be eliminated.
Background technology
In Chemical Manufacture and civilian processing field, in heat exchange evaporation, polymer preparation, petroleum refining, paint of coating production and application, pulping and paper-making, textile printing and dyeing, food processing, medicine medical treatment, sugaring, fermentation, plating, ore dressing, family and the processes such as industrial washing, water and wastewater treatment, usually run into and do not wish the bubble-related issues that occur, the existence of foam is given and is produced and process and caused tremendous influence, must eliminate.
Tradition research and production practices show, existing physical defoaming method such as settled process, and the decompression method, temperature-raising method, mechanical mixing method, supercritical ultrasonics technology and Fluid injection method etc. are because the physical method defoaming effectiveness is lower, and industrial difficult realization, therefore adopt few.
And the conventional chemical debubbling method as: add the opposite surfactant of model; Add the material that reacts with foam stabilizer; Add the material that makes foam stabilizer cohesion or precipitation, change change pH values or salt adding, utilize the solubility of common ion effect and salting out, change foam stabilizer; Add dissimilar defoamer.
First three plants chemical method due to the problem that has corrosion and blocking pipe, also seldom uses, and industrial debubbling method commonly used is to utilize defoamer to carry out froth breaking.
At first chemical defoamer must spontaneously enter in liquid film and sprawl on the interface, disperse no matter destroy the stability of foam in which way, could change the interface performance of liquid film, finally causes breaking of film.Due to the various variety classes solution of design in producing, the foam kind and the characteristic that produce are different, and the foam for different fluids or solution generation needs the different types of defoamer of exploitation.And in some production and process, the introducing of defoamer can affect the performance of product, and the use of simultaneously a large amount of defoamers has increased production cost.
In sum, in Chemical Manufacture, civilian production and sphere of life, there is no the froth breaking technology with general applicability at present.
Summary of the invention
The objective of the invention is to solve present technical problem, a kind of debubbling method that adopts porous ceramics is provided, physical defoaming, method is simple, and effect is good, non-secondary pollution.
The technical scheme that the present invention adopts for achieving the above object is: a kind of debubbling method that adopts porous ceramics, employing is through hydrophobic treatments, and the aperture is less than the porous ceramics of foam diameter, according to the orientation and the fluid flow direction that produce foam, mode is laid in selection, make that foam is torn, fragmentation in the process that flows, passes porous ceramics, finally realize froth breaking.
The mode of laying of described porous ceramics has: (1) solution is heated or reacts comparatively violent, and foam results from above solution in a large number, and porous ceramic bodies is placed in foam stream siphunculus road, solution top; (2) solution is heated or reacts comparatively and to relax, and foam results from solution inside, and porous ceramics is placed in the pipeline that solution passes through; (3) solution is heated or reacts extremely violent, foam produces in a large number, is gathered in above solution, adopt multi-layer porous ceramic body to be placed in foam stream siphunculus road, solution top, when foam can not be completely eliminated in how empty ceramic body duct, produce and amount of cancellation according to foam, porous ceramic bodies adopts different rates to rotate forward or backwards.
The mode of laying of described pottery according to generation and the elimination situation of foam in actual condition, adopts double-deck or multi-layer porous pottery stack to lay.
What described porous ceramics was applicable has: 1. high siliceous silicate material porous ceramics: make take hard pitchers, acid-proof ceramics slag and other acidproof synthesize ceramic particles as aggregate; 2. aluminosilicate material porous ceramics: take fire-clay grog, burn alumina, sillimanite and mullite synthesizing matter particle and make as aggregate; 3. quiet ceramic material porous ceramics: be mixed to get the micropore ceramics material with multiple grog particle and clay etc. and make; 4. diatomaceous material porous ceramics: mainly take Primary Study of Choosing Diatomite as raw material, add vitrified bond and form; 5. pure carbonaceous material porous ceramics: with low ash coal or the burnt particle of asphalt, perhaps add part graphite, fire with the diluted tar bonding and form; 6. corundum and diamond dust material porous ceramics: take the electro-corundum of different model and silicon-carbide particle as aggregate; 7. cordierite, material of aluminum titanate porous ceramics; The perhaps 8. material porous ceramics that consists of of other industrial wastes, mine tailing and quartz glass or simple glass.
The following processing mode of surface-hydrophobicized employing of described porous ceramics: (1) according to kind and the composition of porous ceramics, chooses the Different Silicon alkanes water-repelling agent hydrophobization that comes to the surface and processes; (2) manually make the porous ceramics super hydrophobic surface: (3) carry out surface-hydrophobicized processing by hydro-thermal method; (4) the nano silicon method is carried out surface-hydrophobicized processing.
Described (2) manually make the porous ceramics hydrophobic surface is to adopt the low-surface-energy material to modify the porous ceramics rough surface.
Described (4) nano silicon method is carried out surface-hydrophobicized processing, by being scattered in alcohol solvent under the effects such as coupling agent such as acetoacetate aluminium with nano silicon, the dispersion liquid centrifugal rotary is coated on porous ceramic surface and obtains hydrophobic surface through high-temperature calcination, then the finishinges such as surface modification agent such as PFO base dimethoxy silane can obtain the porous ceramics super hydrophobic surface.
The present invention adopts the porous ceramics through hydrophobic treatments to carry out froth breaking, and foam is torn in flowing, pass the porous ceramics process, fragmentation, finally realizes froth breaking.The present invention can select the porous ceramics of different aperture Relations Among or different pore size according to generation, generation speed, characteristic and the foam size of the foam that produces; According to the orientation and the fluid flow direction that produce foam, optional majority hole ceramic body is placed in foam stream siphunculus road, solution top, multi-layer porous ceramic body is placed in foam stream siphunculus road, solution top, porous ceramic bodies adopts different rates to rotate forward or backwards, ceramic body holds concurrently that spacing is adjustable according to the foam size, porous ceramics is placed in solution inside, makes solution pass through the pipeline of filling porous pottery.Adopt froth breaking mode of the present invention, can realize fully that not only foam is torn, fragmentation when passing the duct of porous ceramics, and pottery itself is pollution-free, can not cause secondary pollution, meets environmental requirement, and easy to operate simple, security of operation.The present invention is with low cost, has general applicability for the field that the froth breaking demand is arranged in production and life.
Description of drawings
Fig. 1 is the porous ceramics mounting means schematic diagram that bubble results from the solution top in a large number.
Fig. 2 is the porous ceramics mounting means schematic diagram that bubble results from the solution content in a large number.
Fig. 3 is multi-layer porous ceramic rotary installation method schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, but the present invention is not limited to specific embodiment.
Embodiment 1
Solution is heated or reacts comparatively violent, foam results from above solution in a large number, the a large amount of foams that produce as solution evaporation process in tubular heat exchanger, employing is through hydrophobic treatments, and the aperture is less than the porous ceramics of foam diameter, and porous ceramics 1 is placed in solution 3 foam stream siphunculus roads, top, as shown in Figure 1, constantly produce at foam 2, in uphill process, by porous ceramics, make that foam is torn, fragmentation.
The porous ceramics that wherein adopts can be selected different aperture Relations Among or different pore size porous ceramics according to characteristic and the foam size of the foam that produces, and the aperture is less than foam diameter; According to solution properties, as Acidity of Aikalinity, corrosivity etc., can select the unlike material porous ceramics, porous ceramics applicable in this example has 1. high siliceous silicate material porous ceramics: be take hard pitchers, acid-proof ceramics slag and other acidproof synthesize ceramic particles as aggregate, have resistance to water and acid resistance, serviceability temperature reaches 700 ℃; 2. aluminosilicate material porous ceramics: take fire-clay grog, burn alumina, sillimanite and mullite synthesizing matter particle as aggregate, have acid resistance and weak acid resistant, serviceability temperature reaches more than 1000 ℃; 3. quiet ceramic material porous: form near the first material, be mixed to get the micropore ceramics material with multiple grog particle and clay etc.
The surface-hydrophobicized processing of porous ceramics can adopt the silanes water-repelling agent hydrophobization that comes to the surface to process, and gets the rough surface porous ceramics.
Embodiment 2
Solution is heated or reacts comparatively and relax, foam 2 results from solution 3 inside, as inner in solution in the processes such as ore dressing, water and wastewater treatment the generation, the too stable bubble that needs elimination that perhaps adds, this class bubble can not overflow liquid level in a large number, can affect the stability of solution but exist in solution, reduce treatment effect.Employing is through hydrophobic treatments, and the aperture is less than the porous ceramics of foam diameter, and porous ceramics 1 is arranged on solution 3 inside, as shown in Figure 2, make solution pass through the pipeline of filling porous pottery, in solution bubble tear when passing the duct of porous ceramics, fragmentation, finally realize froth breaking.
The porous ceramics that wherein adopts can be selected different aperture Relations Among or different pore size porous ceramics according to characteristic and the foam size of the foam that produces, and the aperture is less than foam diameter; According to solution properties, as Acidity of Aikalinity, corrosivity etc., can select the unlike material porous ceramics, porous ceramics applicable in this example has 4. diatomaceous material: mainly take Primary Study of Choosing Diatomite as raw material, add vitrified bond to form, be used for smart drainage and acid medium; 5. pure carbonaceous material: with low ash coal or the burnt particle of asphalt, perhaps add part graphite, fire with the diluted tar bonding and form, be used for water-fast, cold and hot strong acid, cold and hot highly basic medium and air sterillization, filtration etc.; 6. corundum and diamond dust material: take the electro-corundum of different model and silicon-carbide particle as aggregate, have anti-strong acid, high-temperature stability, heatproof can reach 1600 ℃.
In this example, the porous ceramic surface hydrophobization process to adopt the nano silicon method: with nano silicon by being scattered in alcohol solvent under the effects such as coupling agent such as acetoacetate aluminium, the dispersion liquid centrifugal rotary is coated on porous ceramic surface and obtains hydrophobic surface through high-temperature calcination, then the finishinges such as surface modification agent such as PFO base dimethoxy silane can obtain the porous ceramics super hydrophobic surface.
Embodiment 3
solution is heated or reacts extremely violent, foam produces in a large number, be gathered in above solution, as have certain viscosity solution evaporation process and (evaporate as waste water, crude oil HTHP dehydration etc.) a large amount of foams that produce in, employing is through hydrophobic treatments, and the aperture is less than the porous ceramics of foam diameter, porous ceramics 1 multilayer is placed in solution 3 foam stream siphunculus roads, top, the operating mode that can not be completely eliminated in how empty ceramic body duct for foam 2, produce and amount of cancellation according to foam in producing, porous ceramic bodies adopts different rates to rotate forward or backwards, as shown in Figure 3, the ceramic body spacing of holding concurrently is adjustable according to the foam size, when the foam that is not broken fully in the porous ceramics duct enters the ceramic body intermediate gap, rotation at the up and down ceramic body, can be completely broken under the shearing force effect that extruding produces.
The present invention can adopt bilayer or the multi-layer porous ceramic overlap-add procedure more than three layers according to generation and the elimination situation of foam in actual condition.
The porous ceramics that wherein adopts can be selected different aperture Relations Among or different pore size porous ceramics according to characteristic and the foam size of the foam that produces, and the aperture is less than foam diameter; According to solution properties, as Acidity of Aikalinity, corrosivity etc., can select the unlike material porous ceramics, porous ceramics applicable in this example has 4. diatomaceous material: mainly take Primary Study of Choosing Diatomite as raw material, add vitrified bond to form, be used for smart drainage and acid medium; 5. pure carbonaceous material: with low ash coal or the burnt particle of asphalt, perhaps add part graphite, fire with the diluted tar bonding and form, be used for water-fast, cold and hot strong acid, cold and hot highly basic medium and air sterillization, filtration etc.; 6. corundum and diamond dust material: take the electro-corundum of different model and silicon-carbide particle as aggregate, have anti-strong acid, high-temperature stability, heatproof can reach 1600 ℃; 7. cordierite, material of aluminum titanate: because its thermal coefficient of expansion is little, be widely used in the environment of thermal shock; 8. the material of other industrial wastes, mine tailing and quartz glass or simple glass formation is looked raw material composition difference and is applied to different field.
In this example, the artificial porous ceramics super hydrophobic surface of making is adopted in the surface-hydrophobicized processing of porous ceramics: adopt the low-surface-energy material to modify the porous ceramics rough surface.Thereby perhaps make nano particle obtain coarse hydrophobic surface at porous ceramic surface ordering growth or rearrangement by hydro-thermal method.
Claims (7)
1. debubbling method that adopts porous ceramics, it is characterized in that: adopt through hydrophobic treatments, and the aperture is less than the porous ceramics of foam diameter, according to the orientation and the fluid flow direction that produce foam, mode is laid in selection, make that foam is torn, fragmentation in the process that flows, passes porous ceramics, finally realize froth breaking; The mode of laying of porous ceramics has: (1) solution is heated or reacts comparatively violent, and foam results from above solution in a large number, and porous ceramic bodies is placed in foam stream siphunculus road, solution top; (2) solution is heated or reacts comparatively and to relax, and foam results from solution inside, and porous ceramics is placed in the pipeline that solution passes through; (3) solution is heated or reacts extremely violent, foam produces in a large number, is gathered in above solution, adopt multi-layer porous ceramic body to be placed in foam stream siphunculus road, solution top, when foam can not be completely eliminated in how empty ceramic body duct, produce and amount of cancellation according to foam, porous ceramic bodies adopts different rates to rotate forward or backwards.
2. a kind of debubbling method that adopts porous ceramics according to claim 1 is characterized in that: the mode of laying of pottery, according to generation and the elimination situation of foam in actual condition, adopt double-deck or multi-layer porous pottery stack to lay.
3. a kind of debubbling method that adopts porous ceramics according to claim 1 and 2 is characterized in that: what described porous ceramics was applicable has:
High siliceous silicate material porous ceramics: make take hard pitchers, acid-proof ceramics slag and other acidproof synthesize ceramic particles as aggregate; 2. aluminosilicate material porous ceramics: take fire-clay grog, burn alumina, sillimanite and mullite synthesizing matter particle and make as aggregate; 3. quiet ceramic material porous ceramics: be mixed to get the micropore ceramics material with multiple grog particle and clay and make; 4. diatomaceous material porous ceramics: mainly take Primary Study of Choosing Diatomite as raw material, add vitrified bond and form; 5. pure carbonaceous material porous ceramics: with low ash coal or the burnt particle of asphalt, perhaps add part graphite, fire with the diluted tar bonding and form; 6. corundum and diamond dust material porous ceramics: take the electro-corundum of different model and silicon-carbide particle as aggregate; 7. cordierite, material of aluminum titanate porous ceramics; The perhaps 8. material porous ceramics that consists of of other industrial wastes, mine tailing and quartz glass or simple glass.
4. a kind of debubbling method that adopts porous ceramics according to claim 1 and 2, it is characterized in that: the following processing mode of surface-hydrophobicized employing of described porous ceramics: (1) according to kind and the composition of porous ceramics, chooses the different silane water-repelling agents hydrophobization that comes to the surface and processes; (2) manually make the porous ceramics super hydrophobic surface: (3) carry out surface-hydrophobicized processing by hydro-thermal method; (4) the nano silicon method is carried out surface-hydrophobicized processing.
5. a kind of debubbling method that adopts porous ceramics according to claim 4 is characterized in that: described (2) manually make the porous ceramics hydrophobic surface is to adopt the low-surface-energy material to modify the porous ceramics rough surface.
6. a kind of debubbling method that adopts porous ceramics according to claim 4, it is characterized in that: described (4) nano silicon method is carried out surface-hydrophobicized processing, by being scattered in alcohol solvent under action of coupling agents with nano silicon, the dispersion liquid centrifugal rotary is coated on porous ceramic surface and obtains hydrophobic surface through high-temperature calcination, then surface modification agent finishing obtains the porous ceramics super hydrophobic surface.
7. a kind of debubbling method that adopts porous ceramics according to claim 6, it is characterized in that: described (4) nano silicon method is carried out surface-hydrophobicized processing, and coupling agent adopts acetoacetate aluminium; Coating material adopts PFO base dimethoxy silane.
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| CN104258604B (en) * | 2014-10-17 | 2015-11-18 | 河北工业大学 | Porous media froth breaker |
| CN107096260A (en) * | 2017-04-17 | 2017-08-29 | 浙江长城搅拌设备股份有限公司 | For the defoaming stirrer in fermentation process |
| CN109046218A (en) * | 2018-09-18 | 2018-12-21 | 山西康特尔精细化工有限责任公司 | A kind of high-performance polycarboxylic acids water reducing agent reaction kettle |
| US20220088505A1 (en) * | 2019-01-29 | 2022-03-24 | Donaldson Company, Inc. | System and method for deaeration |
| US11959186B2 (en) | 2020-11-26 | 2024-04-16 | Changxin Memory Technologies, Inc. | Electroplating method and electroplating apparatus |
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| CN1172467A (en) * | 1995-01-31 | 1998-02-04 | 罗伯特·博施有限公司 | Ceramic powders with surface which is made hydrophobic and their production and use |
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Patent Citations (3)
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| CN1172467A (en) * | 1995-01-31 | 1998-02-04 | 罗伯特·博施有限公司 | Ceramic powders with surface which is made hydrophobic and their production and use |
| CN101396647A (en) * | 2007-09-29 | 2009-04-01 | 中科合成油技术有限公司 | Gas-liquid-solid three-phase suspended bed reactor for f-t synthesis and use thereof |
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| 刘培生."多孔材料的应用"和"多孔陶瓷制备".《多孔材料引论》.清华大学出版社,2004,(第1版),第10、69-70、263-264页. |
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