US20110253040A1 - Apparatus For Forming Composite Membrane With Porous Coating Layer - Google Patents
Apparatus For Forming Composite Membrane With Porous Coating Layer Download PDFInfo
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- US20110253040A1 US20110253040A1 US13/173,305 US201113173305A US2011253040A1 US 20110253040 A1 US20110253040 A1 US 20110253040A1 US 201113173305 A US201113173305 A US 201113173305A US 2011253040 A1 US2011253040 A1 US 2011253040A1
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- United States
- Prior art keywords
- droplets
- liquid
- filling device
- signal
- coating layer
- 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.)
- Abandoned
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- 239000012528 membrane Substances 0.000 title claims abstract description 41
- 239000011247 coating layer Substances 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract 2
- 238000011049 filling Methods 0.000 claims description 28
- 238000005507 spraying Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 11
- 238000007750 plasma spraying Methods 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000005429 filling process Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 8
- -1 aluminum silicates Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910052915 alkaline earth metal silicate Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/002—Organic membrane manufacture from melts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/26—Spraying processes
Definitions
- the present invention is generally related to a method for forming a composite membrane and an apparatus thereof, and more particularly to a method for forming a composite membrane with a porous coating layer and an apparatus thereof.
- Membrane separation is energy-saving and economical separation technique.
- the membrane separation process has gradually become important in chemical industry, water treatment, food processing, biomedical technology, electronic industry, and so forth.
- the material of membrane can be organic, inorganic, or organic/inorganic hybrid. Since inorganic material has the advantages of thermal stability, mechanical stability, and chemical stability, inorganic membrane has been widely applied in separation, either in micro filtration, ultra filtration, gas separation, or even in membrane reactor.
- Inorganic membrane generally can be categorized into two types, dense membrane and porous membrane, according to the morphology of its surface. Since the porous membrane has higher permeability than the dense one, it has been widely applied in various industries. Besides, the porous membrane has more functionalities than the dense one and can be applied in gas separation, micro filtration and ultra filtration for solid-liquid separation, and even nano-filtration.
- the present invention provides a method for forming a composite membrane with a porous coating layer and an apparatus thereof so as to solve the above problems in the prior art.
- One object of the present invention is to utilize the principle of liquid vaporization by heat to prepare a porous inorganic membrane.
- melt droplets are sprayed to the surface of a porous substrate filled with a liquid.
- the liquid is evaporated by the high temperature droplets and plasma flame to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled.
- Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
- Another object of the present invention is to use organic polymeric material and/or inorganic material to form an organic/inorganic coating layer.
- the prior techniques such as sol-gel method, solid particle sintering method, and chemical vapor deposition, are not feasible to prepare organic porous membranes or organic/inorganic composite membranes. Therefore, this present invention does have the economic advantages for industrial applications.
- a method for forming a composite membrane with a porous coating layer is provided.
- a porous substrate is ceramic or metallic porous substrate with a pore diameter less than or equal to 100 ⁇ m.
- a filling process to fill the pores of the porous substrate with a liquid is carried out.
- the liquid can be water, alcohol, ketone, or combination thereof.
- the filling process can be pressurized type filling, showering type filling, vacuum suction type filling, and dipping type filling.
- a melting process is performed to transform a raw material into melt or incomplete melt droplets by a heat source, such as flame, arc, or plasma.
- the filling, melting, and spraying process can be performed to increase the thickness of the coating layer.
- the inorganic material comprises one material selected from the group consisting of the following or any combination thereof: alkali metal, alkaline earth metal, mixture of alkali and alkaline earth metal silicates, aluminum silicates, zirconium silicates, hydrated silicates, aluminates, oxides, nitrides, oxynitrides, carbides, oxycarbides, borates, titanates, phosphates, halides, and derivatives thereof.
- the melting process and spraying process can be combined into a thermal spraying process or an atmospheric plasma spraying process.
- an apparatus for forming a composite membrane with a porous coating layer comprises a heat source generating device, a raw material transporting device, a filling device, and spraying device.
- the raw material transporting device transports a raw material to the heat source generating device and the raw material is transformed into melt or incomplete melt droplets by a heat source, such as flame, arc, or plasma.
- the filling device is to fill the pores of a porous substrate with a liquid and the porous substrate is of ceramics or metal.
- the liquid can be water, alcohol, ketone, or mixture thereof.
- the spraying device sprays the droplets to the surface of the porous substrate filled with the liquid.
- the liquid is evaporated by the high temperature droplets and plasma flame (the temperature higher than the boiling point of the liquid) to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled.
- Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
- the filling device can be a pressurized type filling device, showering type filling device, vacuum suction type filling device, and dipping type filling device.
- the heat source generating device adjusts electric power supply and the temperature of a heat source according to a first signal
- the raw material transporting device adjusts the speed of raw transportation according to a second signal
- the spraying device adjusts the speed of spraying according to a third signal.
- the first, second and third signals are generated by a control device.
- an apparatus used in an atmospheric plasma spraying process for forming a composite membrane with a porous coating layer comprises a power generator, a high frequency generator, a plasma gun, a powder feeder, and a filling device.
- the high frequency generator uses supplied electric power to generate high frequency spark and ignite an arc.
- the arc energy is used by the plasma gun to ionized inert gas and to generate a plasma jet flow in the plasma gun.
- the powder feeder feeds a powder into the plasma gun and uses the temperature of the plasma jet flow to transform the powder into melt or incomplete melt droplets.
- the filling device is to fill the pores of a porous substrate with a liquid.
- the plasma jet flow sprays the droplets to the surface of the porous substrate filled with the liquid.
- the liquid is evaporated by the high temperature droplets and plasma flame (the temperature higher than the boiling point of the liquid) to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled.
- Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
- the material of the porous substrate, the liquid, and the filling device are in the same manner as those in the second embodiment.
- the power generator adjusts electric power supply according to a first signal
- the high frequency generator adjusts start ignition according to a second signal
- the plasma gun adjusts the speed of spraying according to a third signal
- the powder feeder adjusts the speed of transporting powder according to a fourth signal
- the first, second, third, and fourth signals are generated by a control device.
- the thermal spraying method is a new method for preparing membranes, generally for preparing dense inorganic membranes.
- the common atmospheric plasma spraying technique is a spraying process under atmosphere and the porosity of the thus formed coating layer is high. Therefore, the density of membrane by atmospheric plasma spraying is not higher enough for the users in applying protection coating by atmospheric plasma spraying.
- there are various processes developed in atmospheric plasma spraying technique For a long time, such a characteristic, the coating layer with high porosity fabricated by atmospheric plasma spraying, that is thought to be failure, has not been applied in the method for preparing porous membranes.
- the invention conquers the technical bias by those who are skilled in the art and uses such discarded technique and improves it to achieve high porosity. Thus, the invention can not be easily achieved.
Abstract
The present invention discloses a method for forming a composite membrane with a porous coating layer. At first, a filling process is carried out to fill the pores of a porous substrate with a liquid. Next, a raw material is transformed into melt or incomplete melt droplets by a heating source and the droplets are sprayed to the surface of the porous substrate filled with the liquid. The liquid is evaporated by the high temperature droplets and plasma flame to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled. Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer. Moreover, the invention provides an apparatus for forming a composite membrane with a porous coating layer.
Description
- This is a divisional of U.S. Ser. No. 12/117,287, filed May 08, 2008 by the same inventors, and claims priority there from. This divisional application contains rewritten claims to the restricted-out subject matter of original claims.
- 1. Field of the Invention
- The present invention is generally related to a method for forming a composite membrane and an apparatus thereof, and more particularly to a method for forming a composite membrane with a porous coating layer and an apparatus thereof.
- 2. Description of the Prior Art
- Membrane separation is energy-saving and economical separation technique. Thus, the membrane separation process has gradually become important in chemical industry, water treatment, food processing, biomedical technology, electronic industry, and so forth. In the membrane separation process, the material of membrane can be organic, inorganic, or organic/inorganic hybrid. Since inorganic material has the advantages of thermal stability, mechanical stability, and chemical stability, inorganic membrane has been widely applied in separation, either in micro filtration, ultra filtration, gas separation, or even in membrane reactor.
- Inorganic membrane generally can be categorized into two types, dense membrane and porous membrane, according to the morphology of its surface. Since the porous membrane has higher permeability than the dense one, it has been widely applied in various industries. Besides, the porous membrane has more functionalities than the dense one and can be applied in gas separation, micro filtration and ultra filtration for solid-liquid separation, and even nano-filtration.
- Among the methods for preparing porous inorganic membrane, methods like sol-gel method, solid particle sintering method, and chemical vapor deposition (CVD), etc., are common ones, but these processes have disadvantages of complicated processing, time consuming, limited selection in raw materials to limit the industrial application thereof. Therefore, in order to solve the above-mentioned problems, it is necessary to develop a new membrane apparatus and process to manufacture a composite membrane with a porous coating layer to reduce manufacturing cost.
- In light of the above background, in order to fulfill the requirements of the industry, the present invention provides a method for forming a composite membrane with a porous coating layer and an apparatus thereof so as to solve the above problems in the prior art.
- One object of the present invention is to utilize the principle of liquid vaporization by heat to prepare a porous inorganic membrane. At first, melt droplets are sprayed to the surface of a porous substrate filled with a liquid. The liquid is evaporated by the high temperature droplets and plasma flame to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled. Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
- Another object of the present invention is to use organic polymeric material and/or inorganic material to form an organic/inorganic coating layer. On the contrary, the prior techniques such as sol-gel method, solid particle sintering method, and chemical vapor deposition, are not feasible to prepare organic porous membranes or organic/inorganic composite membranes. Therefore, this present invention does have the economic advantages for industrial applications.
- What is probed into the invention is a method for forming a composite membrane with a porous coating layer and an apparatus thereof. Detail descriptions of the device and steps will be provided in the following in order to make the invention thoroughly understood. Obviously, the application of the invention is not confined to specific details familiar to those who are skilled in the art. On the other hand, the common steps or devices that are known to everyone are not described in details to avoid unnecessary limits of the invention. Some preferred embodiments of the present invention will now be described in greater detail in the following. However, it should be recognized that the present invention can be practiced in a wide range of other embodiments besides those explicitly described, that is, this invention can also be applied extensively to other embodiments, and the scope of the present invention is expressly not limited except as specified in the accompanying claims.
- In a first embodiment of the present invention, a method for forming a composite membrane with a porous coating layer is provided. At first, a porous substrate is provided. The porous substrate is ceramic or metallic porous substrate with a pore diameter less than or equal to 100 μm. A filling process to fill the pores of the porous substrate with a liquid is carried out. The liquid can be water, alcohol, ketone, or combination thereof. The filling process can be pressurized type filling, showering type filling, vacuum suction type filling, and dipping type filling. Following that, a melting process is performed to transform a raw material into melt or incomplete melt droplets by a heat source, such as flame, arc, or plasma. Then, spraying these droplets to the surface of the porous substrate filled with the liquid is performed to complete a spraying process. In the spraying process, these droplets impact the surface of the porous substrate and diffuse towards surroundings after colliding to form planarized droplets. The evaporation of the liquid is induced by these high temperature droplets and plasma flame (the temperature higher than the boiling point of the liquid) and then the liquid becomes vapor. The vapor breaks through the thinner portion of the planarized droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled. By repeatedly performing the spraying process, flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer. After the process of forming the composite membrane with a porous coating layer, the filling, melting, and spraying process can be performed to increase the thickness of the coating layer. In addition, the inorganic material comprises one material selected from the group consisting of the following or any combination thereof: alkali metal, alkaline earth metal, mixture of alkali and alkaline earth metal silicates, aluminum silicates, zirconium silicates, hydrated silicates, aluminates, oxides, nitrides, oxynitrides, carbides, oxycarbides, borates, titanates, phosphates, halides, and derivatives thereof. In a preferred example of this embodiment, the melting process and spraying process can be combined into a thermal spraying process or an atmospheric plasma spraying process.
- In a second embodiment of the present invention, an apparatus for forming a composite membrane with a porous coating layer is disclosed. The apparatus comprises a heat source generating device, a raw material transporting device, a filling device, and spraying device. The raw material transporting device transports a raw material to the heat source generating device and the raw material is transformed into melt or incomplete melt droplets by a heat source, such as flame, arc, or plasma. Besides, the filling device is to fill the pores of a porous substrate with a liquid and the porous substrate is of ceramics or metal. The liquid can be water, alcohol, ketone, or mixture thereof. The spraying device sprays the droplets to the surface of the porous substrate filled with the liquid. The liquid is evaporated by the high temperature droplets and plasma flame (the temperature higher than the boiling point of the liquid) to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled. Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer. The filling device can be a pressurized type filling device, showering type filling device, vacuum suction type filling device, and dipping type filling device. In addition, the heat source generating device adjusts electric power supply and the temperature of a heat source according to a first signal, the raw material transporting device adjusts the speed of raw transportation according to a second signal, and the spraying device adjusts the speed of spraying according to a third signal. Besides, the first, second and third signals are generated by a control device.
- In a third embodiment of the present invention, an apparatus used in an atmospheric plasma spraying process for forming a composite membrane with a porous coating layer is disclosed. The apparatus comprises a power generator, a high frequency generator, a plasma gun, a powder feeder, and a filling device. The high frequency generator uses supplied electric power to generate high frequency spark and ignite an arc. The arc energy is used by the plasma gun to ionized inert gas and to generate a plasma jet flow in the plasma gun. The powder feeder feeds a powder into the plasma gun and uses the temperature of the plasma jet flow to transform the powder into melt or incomplete melt droplets. The filling device is to fill the pores of a porous substrate with a liquid. The plasma jet flow sprays the droplets to the surface of the porous substrate filled with the liquid. The liquid is evaporated by the high temperature droplets and plasma flame (the temperature higher than the boiling point of the liquid) to become vapor and the vapor breaks through the droplets to have the droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled. Flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer. The material of the porous substrate, the liquid, and the filling device are in the same manner as those in the second embodiment. In addition, the power generator adjusts electric power supply according to a first signal, the high frequency generator adjusts start ignition according to a second signal, the plasma gun adjusts the speed of spraying according to a third signal, the powder feeder adjusts the speed of transporting powder according to a fourth signal, and besides the first, second, third, and fourth signals are generated by a control device.
- The thermal spraying method is a new method for preparing membranes, generally for preparing dense inorganic membranes. The common atmospheric plasma spraying technique is a spraying process under atmosphere and the porosity of the thus formed coating layer is high. Therefore, the density of membrane by atmospheric plasma spraying is not higher enough for the users in applying protection coating by atmospheric plasma spraying. Thus, there are various processes developed in atmospheric plasma spraying technique. For a long time, such a characteristic, the coating layer with high porosity fabricated by atmospheric plasma spraying, that is thought to be failure, has not been applied in the method for preparing porous membranes. The invention conquers the technical bias by those who are skilled in the art and uses such discarded technique and improves it to achieve high porosity. Thus, the invention can not be easily achieved.
- Obviously many modifications and variations are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims the present invention can be practiced otherwise than as specifically described herein. Although specific embodiments have been illustrated and described herein, it is obvious to those skilled in the art that many modifications of the present invention may be made without departing from what is intended to be limited solely by the appended claims.
Claims (13)
1. An apparatus for forming a composite membrane with a porous coating layer, comprising:
a heat source generating device;
a raw material transporting device to transport a raw material to said heat source generating device wherein said raw material is transformed into melt or incomplete melt droplets by a heat source;
a filling device to fill the pores of a porous substrate with a liquid; and
a spraying device to spray said droplets to the surface of said porous substrate wherein said liquid is evaporated by said high temperature droplets and plasma flame to become vapor, the vapor breaks through said droplets to have said droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled, and flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
2. The apparatus according to claim 1 , wherein said heat source generating device adjusts electric power supply and the temperature of a heat source according to a first signal, said raw material transporting device adjusts the speed of raw transportation according to a second signal, said spraying device adjusts the speed of spraying according to a third signal, and besides said first signal , said second signal and said third signal are generated by a control device.
3. The apparatus according to claim 1 , wherein said heating source generated by said heat source generating device comprises one source selected from the group consisting of the following or any combination thereof: flame, arc, or plasma.
4. The apparatus according to claim 1 , wherein said porous substrate is of ceramics or metal.
5. The apparatus according to claim 1 , wherein said liquid comprises one substance selected from the group consisting of the following or any combination thereof: water, alcohol, or ketone.
6. The apparatus according to claim 1 , wherein said filling device comprises one device selected from the group consisting of the following:
pressurized type filling device, showering type filling device, vacuum suction type filling device, and dipping type filling device.
7. The apparatus according to claim 1 , wherein the temperature of said droplets is higher than the boiling point of said liquid.
8. An apparatus used in an atmospheric plasma spraying process for forming a composite membrane with a porous coating layer, comprising:
a power generator for supplying electric power;
a high frequency generator using said electric power to generate high frequency spark and ignite an arc;
a plasma gun using inert gas ionized by the energy of said arc to generate a plasma jet flow therein;
a powder feeder for feeding a powder into said plasma gun wherein said powder is transformed into melt or incomplete melt droplets via the temperature of said plasma jet flow; and
a filling device for filling the pores of a porous substrate with a liquid wherein said plasma jet flow sprays said droplets to the surface of said porous substrate filled with said liquid, said liquid is evaporated by said high temperature droplets and plasma flame to become vapor, the vapor breaks through said droplets to have said droplets sputter into different blocks to thereby form random and dispersed flat particles after cooled, and flat particles are formed and stacked continuously so as to form a composite membrane with a porous coating layer.
9. The apparatus according to claim 8 , wherein said power generator adjusts electric power supply according to a first signal, said high frequency generator adjusts start ignition according to a second signal, said plasma gun adjusts the speed of spraying according to a third signal, said powder feeder adjusts the speed of transporting powder according to a fourth signal, and besides said first, second, third, and fourth signals are generated by a control device.
10. The apparatus according to claim 8 , wherein said porous substrate is of ceramics or metal.
11. The apparatus according to claim 8 , wherein said liquid comprises one substance selected from the group consisting of the following or any combination thereof: water, alcohol, or ketone.
12. The apparatus according to claim 8 , wherein the temperature of said droplets is higher than the boiling point of said liquid.
13. The apparatus according to claim 8 , wherein said filling device comprises one device selected from the group consisting of the following: pressurized type filling device, showering type filling device, vacuum suction type filling device, and dipping type filling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/173,305 US20110253040A1 (en) | 2008-05-08 | 2011-06-30 | Apparatus For Forming Composite Membrane With Porous Coating Layer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/117,287 US20090280262A1 (en) | 2008-05-08 | 2008-05-08 | Method for forming composite membrane with porous coating layer and apparatus thereof |
| US13/173,305 US20110253040A1 (en) | 2008-05-08 | 2011-06-30 | Apparatus For Forming Composite Membrane With Porous Coating Layer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/117,287 Division US20090280262A1 (en) | 2008-05-08 | 2008-05-08 | Method for forming composite membrane with porous coating layer and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20110253040A1 true US20110253040A1 (en) | 2011-10-20 |
Family
ID=41267076
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/117,287 Abandoned US20090280262A1 (en) | 2008-05-08 | 2008-05-08 | Method for forming composite membrane with porous coating layer and apparatus thereof |
| US13/173,305 Abandoned US20110253040A1 (en) | 2008-05-08 | 2011-06-30 | Apparatus For Forming Composite Membrane With Porous Coating Layer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/117,287 Abandoned US20090280262A1 (en) | 2008-05-08 | 2008-05-08 | Method for forming composite membrane with porous coating layer and apparatus thereof |
Country Status (1)
| Country | Link |
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| US (2) | US20090280262A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014093622A2 (en) | 2012-12-12 | 2014-06-19 | The Broad Institute, Inc. | Delivery, engineering and optimization of systems, methods and compositions for sequence manipulation and therapeutic applications |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201211309D0 (en) * | 2012-06-26 | 2012-08-08 | Fujifilm Mfg Europe Bv | Process for preparing membranes |
| TWI647336B (en) * | 2018-03-12 | 2019-01-11 | 承鴻工業股份有限公司 | Preparation method of composite porous structure and composite porous structure |
| US11673097B2 (en) * | 2019-05-09 | 2023-06-13 | Valorbec, Societe En Commandite | Filtration membrane and methods of use and manufacture thereof |
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| US3762566A (en) * | 1971-08-03 | 1973-10-02 | Abcor Inc | Supported semipermeable membranes and process for preparing same |
| US4048348A (en) * | 1971-10-18 | 1977-09-13 | General Electric Company | Method of applying a fused silica coating to a substrate |
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| WO2014093622A2 (en) | 2012-12-12 | 2014-06-19 | The Broad Institute, Inc. | Delivery, engineering and optimization of systems, methods and compositions for sequence manipulation and therapeutic applications |
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| Publication number | Publication date |
|---|---|
| US20090280262A1 (en) | 2009-11-12 |
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