CN1487258A - Spray drying & granulating method and apparatus - Google Patents
Spray drying & granulating method and apparatus Download PDFInfo
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- CN1487258A CN1487258A CNA031550932A CN03155093A CN1487258A CN 1487258 A CN1487258 A CN 1487258A CN A031550932 A CNA031550932 A CN A031550932A CN 03155093 A CN03155093 A CN 03155093A CN 1487258 A CN1487258 A CN 1487258A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/10—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
- F26B3/12—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it in the form of a spray, i.e. sprayed or dispersed emulsions or suspensions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Abstract
A method for spray-drying granulation can be used to obtained a powder obtained by agglomeration of solid particles by spraying and drying a dispersion solution of solid particles in a spray-drying chamber. The spray-drying chamber is formed of a bag-shaped or cylindrical porous film, which is heat resistant and has a good peeling property. During a spray-drying operation, the dispersion solution of solid particles is atomized and a hot wind is used to remove solvent from the dispersion solution. Meanwhile, a dry exhaust portion containing an agglomeration of the dried solid particles passes through the porous film in the spray-drying chamber. Thus, all powder particles are contained in the spray-drying chamber. Furthermore, during the spray granulation process, while maintaining the volume of the spray-drying chamber, the internal pressure of the spray-drying chamber is controlled at about 0 to the negative pressure so that the powder gas spirals in the spray-drying chamber to form particles with a specified particle size.
Description
Technical field
The present invention relates to a kind of spray drying granulation method and device.
Background technology
At present, it is the mode of production of the multi-varieties and small-batch of object that spray drying process and need for equipment have been transferred to products such as pharmaceuticals, high technology ceramicses from original few kind mass production method, and requires the situation of more highly purified product increasing.
When making high purity product in the Multi-varieties and Small-batch Production mode, switch owing to must carry out kind continually, the solid state component that adheres to therefore rapidly each and clean dry chamber interior walls fully is necessary indispensable.This be because, when carrying out Multi-varieties and Small-batch Production effectively, holding time is cleaned and is become fatal defects, and if product quality requirement high-purity and high-quality, when kind is switched, must clean fully and adhere to solid state component.
But, fully the clean dry chamber interior walls adhere to very difficulty of solid state component, and, when product is harmful, owing to can not directly contact, so that clean very difficult with product.
And, if require the Multi-varieties and Small-batch Production mode or make high purity product, in the past almost the component separating of unquestioned product also because the requirement of the high-purityization of product becomes problem.
In order to eliminate above problem points, the inventor has proposed following spray drying process and device (with reference to No. the 1947599th, special permission), promptly, example as spray-drying installation, as shown in Figure 5, by single bag shape or the thermostability of tubular and the integral body that good fissility porous system film forms the spray drying chamber, dry waste gas is from being passed through laterally by the inboard of the film formed spray drying chamber of porous system in fact.Like this, because the little powder body of particle diameter does not follow gas to be discharged into outside the apparatus main body before not resembling, so do not produce component separating, even carry out frequent kind that the Multi-varieties and Small-batch Production mode followed when switching, can be rapidly and easily adhere to cleaning and stroking of micropowder, the result can realize the high-quality and high-purity of product powder body.
In addition, also adopt following spray granulation plant, that is, this device is by for example carrying out spray drying to the slurry that has mixed water and binding agent etc. in powder body, and the powder body that above-mentioned spray-drying installation is obtained is made the marumerizer powder of formability and mobile good and homogeneous.
In the past, spray granulation plant and spray-drying installation are provided with respectively, but when making high purity product in save spaceization and in the Multi-varieties and Small-batch Production mode, because by using spray-drying installation as spray granulation plant, when the product of same quality, there is no need the solid state component that adheres to of complete clean dry chamber interior walls, so can carry out Multi-varieties and Small-batch Production effectively.
But, when carrying out above-mentioned mist projection granulating with spray-drying installation shown in Figure 5, because the hot blast of being enclosed leads to ambient atmos from the porous system film surface that forms the spray drying chamber, thereby there be the powder body littler to leak into exterior defects than the filter sizes of porous system film, and because micropowder is first-class attached to porous system film, spray drying chamber the intrinsic pressure change easily that becomes is to guarantee that necessity is obligato aspect the volume of spray drying chamber so spray drying chamber intrinsic pressure remained on malleation one side.
Because like this, at the indoor difficult formation of the spray drying stream that circles round, but also be easy to generate the upper and lower temperature difference of spray drying chamber, thereby because the holdup time weak point of drying-granulating thing, the moisture of drop inside sharply moves to outside (for anxious drying regime), is easy to generate space, the significantly reduced problem of bulk density so have in the inside as the dry thing (granule) of product.Particularly in heavy powder body or the coarse grain more than the 100 μ m, because speed of fall is accelerated, this tendency is remarkable.
The present invention is that the problem that has in view of this prior art is made, its purpose is to provide a kind of spray drying granulation method and device, this device is when spray drying, do not produce component separating, even and when the frequent kind that the Multi-varieties and Small-batch Production mode is followed is switched, also can be rapidly and easily adhere to cleaning and stroking of micropowder, and, because the holdup time that when mist projection granulating, can fully guarantee the drying-granulating thing, so even the above coarse grain of heavy powder body or 100 μ m also can improve the bulk density of drying-granulating thing, and the spraying grain when not producing mist projection granulating adheres to the yield rate that is caused on the hothouse inwall and reduces, or because the generation of peeling off the special-shaped shape powder that is produced of the adherent spraying of institute, in addition, owing in the product of identical component system, can in same hothouse, carry out spray drying operation and mist projection granulating operation, so can help the save spaceization of device and high-qualityization of product, high-purityization.
Summary of the invention
Promptly, according to the present invention, a kind of spray drying granulation method is provided, this method is by the solids dispersion soln being sprayed at the indoor drying of carrying out of spray drying, thereby obtain the spray drying granulation method of the powder body of solids cohesion, it is characterized in that, this spray drying chamber is made of the thermostability of bag shape or tubular and the multiple aperture plasma membrane of good fissility, during spray drying, it is indoor by this solids dispersion soln is sprayed at spray drying, remove from this solids dispersion soln with hot blast and to desolvate and make it dry, only make the drying of the powder body gas that contains this powder body that exsiccant these solids condensed to some extent discharge this multiple aperture plasma membrane that gas partly passes this spray drying chamber of formation, can be at indoor this powder body of acquisition full dose of this spray drying, and, during mist projection granulating, by under the volumetrical state that keeps this spray drying chamber, intrinsic pressure being controlled to be roughly of this spray drying chamber become negative pressure from 0, this powder body gas is circled round in that this spray drying is indoor, thus powder body that can pelletize regulation particle diameter.
At this moment, intrinsic pressure being preferably-200 of the spray drying chamber during mist projection granulating～+ 20Pa.
And, providing a kind of prilling apparatus with atomizing drying units according to the present invention, this device has: form whole spray drying chamber by the thermostability of single bag shape or tubular and the multiple aperture plasma membrane of good fissility in fact; The hothouse keeper that keeps the regulation shape of this spray drying chamber; The solids dispersion soln is sprayed into fine droplet in the indoor aerosol apparatus of this spray drying; The hot blast of dry this fine droplet is imported to the indoor hot blast introducing mechanism of this spray drying; Powder section in the indoor powder body gas of this spray drying and drying discharged that gas separates and should drying discharge gas be discharged to this spray drying outdoor, dismounting is equipped on the indoor exhaust gear of this spray drying freely; Adjust the pressure adjustmenting mechanism of the indoor pressure of this spray drying, when spray drying, making this drying discharge gas passes laterally from the spray drying indoor that is formed by this multiple aperture plasma membrane, and, when mist projection granulating, intrinsic pressure being controlled to roughly of this spray drying chamber become negative pressure from 0 with this exhaust gear and this pressure adjustmenting mechanism.
At this moment, among the present invention, when mist projection granulating, be preferably the side in the spray drying chamber, dismounting sets freely and suppresses the sidewall that this drying discharge gas passes, and, be preferably the dismounting of hothouse keeper and keep the spray drying chamber freely.
Description of drawings
Fig. 1 is the figure of an example of expression prilling apparatus with atomizing drying units of the present invention, the cross-sectional schematic of the embodiment when being the expression spray drying.
Fig. 2 is the figure of an example of expression prilling apparatus with atomizing drying units of the present invention, the cross-sectional schematic of the embodiment when being the expression mist projection granulating.
Fig. 3 is the figure of other examples of expression prilling apparatus with atomizing drying units of the present invention, the cross-sectional schematic of the embodiment when being the expression spray drying.
Fig. 4 is the figure of other examples of expression prilling apparatus with atomizing drying units of the present invention, the cross-sectional schematic of the embodiment when being the expression mist projection granulating.
Fig. 5 is the cross-sectional schematic of an example of expression spray-drying installation.
Fig. 6 is the bulk density in the pelletize powder that obtained of expression and the intrinsic pressure relation curve of hothouse.
Fig. 7 (a) and (b), (c) are expressions with the bulk density that embodiment obtained is the curve of the timeliness variation (sample number: 150) of the pelletize powder of the 1.53kg/l single weight of formed body when being shaped by gyratory press.
Fig. 8 (a) and (b), (c) are expressions with the bulk density that comparative example obtained is the curve of the timeliness variation (sample number: 250) of the pelletize powder of the 1.46kg/l single weight of formed body when being shaped by gyratory press.
Concrete form of implementation
Spray drying granulation method of the present invention is when spray drying, indoor by the spray drying that forms at multiple aperture plasma membrane by the thermostability of bag shape or tubular and good fissility, solids dispersion soln (stock solution) by atomizer spray, the gasinlet temperature that utilization is blown into from the hot blast introducing mechanism (for example, 120～280 ℃) hot blast, carry out the transient heating drying, thereby form the powder body (powder body) that exsiccant solids condense.
Above-mentioned powder body is because deadweight, major part sinks to the bottom of spray drying chamber, discharge gas by the drying that only makes the powder body gas that contains above-mentioned powder body and partly pass the above-mentioned multiple aperture plasma membrane that constitutes the spray drying chamber, thereby in the full dose of the above-mentioned powder body of the indoor acquisition of spray drying.
At this moment, the powder body that utilizes multiple aperture plasma membrane to carry out is discharged separating of gas with dry, usually utilizing the woven design that the powder body gas that contains powder body is passed the fiber that constitutes multiple aperture plasma membrane, can only leach powder body wherein, can particle separation diameter be the large-scale powder body of 0.1 μ m～number mm.
And, spray drying granulation method of the present invention is when mist projection granulating, under the volumetrical state that keeps the spray drying chamber, become negative pressure by intrinsic pressure being controlled to be roughly from 0 with the spray drying chamber, it is indoor that powder body gas is gone into spray drying as the conductance that circles round, can fully guarantee the holdup time of drying-granulating thing, even so above coarse grain of heavy powder body or 100 μ m, also can improve the bulk density of drying-granulating thing, and the spraying grain can not produce mist projection granulating the time adheres to the yield rate that is caused on the hothouse inwall and reduces, or because the generation of peeling off the special-shaped shape powder that is produced of the adherent spraying of institute.
In addition, spray drying granulation method of the present invention is owing to can carry out spray drying operation and mist projection granulating operation in same hothouse in the product of identical component system, so can help the save spaceization of device and high-qualityization, the high-purityization of product.
Then, based on accompanying drawing prilling apparatus with atomizing drying units of the present invention is described.
Fig. 1 is the figure that shows an example of prilling apparatus with atomizing drying units of the present invention, the cross-sectional schematic of the embodiment when being the expression spray drying, the cross-sectional schematic of the embodiment when Fig. 2 is the expression mist projection granulating.
As shown in Figures 1 and 2, prilling apparatus with atomizing drying units of the present invention has: form whole spray drying chamber 2 by the thermostability of single bag shape or tubular and the multiple aperture plasma membrane of good fissility in fact; The hothouse keeper 20,22,24 that keeps the regulation shape of spray drying chamber 2; The solids dispersion soln is sprayed into the aerosol apparatus 3 of fine droplet in spray drying chamber 2; The hot blast of dry fine droplet is imported to hot blast introducing mechanism 4 in the spray drying chamber 2; Powder section in the powder body gas in the spray drying chamber 2 and drying discharged that gas separates and with drying discharge gas be discharged to spray drying chamber 2 outer, dismounting is equipped on the exhaust gear 40 in the spray drying chamber 2 freely; With the pressure adjustmenting mechanism (not shown) of adjusting the pressure in the spray drying chamber 2.
Here, prilling apparatus with atomizing drying units of the present invention is when spray drying, as shown in Figure 1, by forming in the whole spray drying chamber 2 solids dispersion soln (stock solution) by aerosol apparatus 3 sprayings by the thermostability of bag shape or tubular and the multiple aperture plasma membrane of good fissility, the gasinlet temperature that utilization is blown into from hot blast introducing mechanism 4 (for example, 120～280 ℃) hot blast, carry out the transient heating drying, thereby form the powder body (powder body) that exsiccant solids condense.
Above-mentioned powder body is because deadweight, major part sinks to the bottom of spray drying chamber 2, discharge gas by the drying that only makes the powder body gas that contains above-mentioned powder body and partly pass the above-mentioned multiple aperture plasma membrane that constitutes spray drying chamber 2, thereby in the full dose of the above-mentioned powder body of the indoor acquisition of spray drying.
In addition, during spray drying, intrinsic pressure operating as+200 of spray drying chamber 2～+ 2000Pa.
And, prilling apparatus with atomizing drying units of the present invention is when mist projection granulating, as shown in Figure 2, after switching to the 2nd product recoverer 18 from the 1st product recoverer 16 (with reference to Fig. 1), the air vent 8 of exhaust gear 40 and product recoverer 18 is connected, the instrumentation result who presses note 50 according to elementary errors makes it roughly become negative pressure from 0 with pressure adjustmenting mechanism control spray drying chamber 2 intrinsic pressure, with this drying is discharged gas and imports to spray drying chamber 2 interior (with reference to the arrow of Fig. 2) as the stream that circles round.
Like this, drying-granulating thing and the spraying grain stream that circles round of discharging gas by drying on one side transports lentamente and falls on one side, with a spraying limit contact edge mist projection granulating.
Here, spray drying chamber 2 utilizes and is equipped on the hothouse keeper 20,22,24 that keeps on the framework 10 respectively four limits in the top, middle part, bottom of spray drying chamber 2 are engaged with maintenance framework 10.
Like this, even when in spray drying chamber 2, becoming negative pressure, also spray drying chamber 2 can be held in the shape of regulation.
In addition, spray drying chamber 2 is the states that hang on the inboard that keeps framework 10, can pass through elevator 30 liftings.
And, be preferably maintenance framework 10 dismantled and assembled being equipped with freely and suppress to pass dry sidewalls 12 of discharging gas.
By making sidewall 12 for adopting the thermal insulation structure of insulation material etc., can prevent spray drying chamber 2 heat radiation, suppress temperature difference up and down.
Like this, owing to can prevent that the moisture of drop inside from sharply moving to the outside,, can improve bulk density so can make interior solid as the dry powder body of product.
In addition, the device shown in Fig. 3～4 can be by in spray drying chamber 2, solids dispersion soln (stock solution) by spray nozzle 26 sprayings is contacted with the hot air convection that is blown into from hot blast introducing mechanism 4 and carries out heat exchange effectively.
In addition, in the present invention, if because continuous operation, powder body adheres to be deposited in and causes the pressure loss to increase on the multiple aperture plasma membrane, must shut down at last, and it is necessary indispensable therefore suitably stroking powder body.
In the present invention, because the spray drying chamber is formed by the good multiple aperture plasma membrane of the fissility of bag shape or tubular, so can adhere to cleaning and stroking of micropowder rapidly and easily by adhering to powder machinery vibration or aerojet (pulse of air) etc. from an opposite side.
And, in the present invention, because the spray drying chamber is formed by the good multiple aperture plasma membrane of the fissility of bag shape or tubular, so can easily change the spray drying chamber, can easily carry out the clean fully of the frequent variety renovation that produces along with the Multi-varieties and Small-batch Production mode and spray drying chamber.
In addition, among the present invention employed multiple aperture plasma membrane must be thermostability and with the good film of fissility of powder body.
That is and since import to the indoor hot blast temperature of spray drying normally inlet temperature be that 120～280 ℃, outlet temperature are 70～150 ℃, so must be the film of anti-this temperature, and, powder body often adheres to easily to be accumulated, and for continuous use, need be the film of good fissility.
Also have, employed multiple aperture plasma membrane is to carry out object powder body and the dry isolating film of gas of discharging among the present invention.
As multiple aperture plasma membrane,, usually adopt with good mesh shape (surface filtration) film of powder body fissility with as the combined films of the heat-resisting filter cloth (spinning cloth or non-woven fabrics) of strength materials though its kind is not particularly limited with this function.
(trade name: polytetrafluoroethylene) mesentery, poly-trifluoro-ethylene mesentery be as above-mentioned mesh shape film, and the cloth that can preferably adopt for example polyimides, heat-resisting nylon, polyester, aromatic polyamides system is as above-mentioned heat-resisting filter cloth for example can preferably to adopt politef [PTFE].
Below, illustrate in greater detail the present invention according to embodiment, but the present invention is not limited to these
Embodiment.
(embodiment)
Adopt prilling apparatus with atomizing drying units shown in Figure 2, by adjusting the slurry (slurry concentration: 65%) of the binding agent PVA (207) that in barium-titanate material, has added 2.0 quality %, respectively at-20～+ 20Pa (2.0～+ the intrinsic pressure spray drying chamber 2 that adjusts down of 2.0mmAq) hothouse in, the above-mentioned slurry of spraying, thus the pelletize powder made respectively.
In addition, hot blast temperature is that 200 ℃, the rotating speed of nebulizer 25 are that 5000rpm, slurry spray amount are 100kg/ hour.
Then the bulk density in the pelletize powder that obtains respectively and the intrinsic pressure relation of hothouse are shown in Fig. 6.
And to use the bulk density that is obtained be that the timeliness of the pelletize powder of the 1.53kg/l single weight of formed body when being shaped by gyratory press changes (sample number: 150) and is shown in Fig. 7 (a) and (b), (c).
(comparative example)
Adopt prilling apparatus with atomizing drying units shown in Figure 5, and the slurry by adjusting the binding agent PVA (207) that in barium-titanate material, has added 2.0 quality % (slurry concentration: 65%), in spray drying chamber 2, the above-mentioned slurry of spraying, thus make the pelletize powder respectively.
In addition, hot blast temperature is that 200 ℃, the rotating speed of nebulizer 25 are that 5000rpm, slurry spray amount are 100kg/ hour.
Below, the bulk density in the pelletize powder that obtains respectively and the intrinsic pressure relation of hothouse are shown in Fig. 6.
And to use the bulk density that is obtained be that the timeliness of the pelletize powder of the 1.46kg/l single weight of formed body when being shaped by gyratory press changes (sample number: 250) and is shown in Fig. 8 (a) and (b), (c).
(investigation)
As shown in Figure 6, among the embodiment, by by-20～+ 20Pa (2.0～+ spray drying chamber's 2 internal spraying slurries of the intrinsic pressure adjustment of 2.0mmAq) hothouse, compare with comparative example, can improve the bulk density of pelletize powder, and making spray drying indoor for negative pressure more, the raising of the long-pending density of pelletize powder body is remarkable more.
Also have, the pelletize powder that is obtained in an embodiment because the single weight change in the progressive forming is little, carries out progressive forming so can not be adjusted to shape condition ground.
The industrial possibility of utilizing
As described above, spray drying granulation method of the present invention and device are in spraying The separation that does not produce composition when dry is even and follow in the Multi-varieties and Small-batch Production mode Frequently kind when switching, also can be rapidly and easily adhere to cleaning and stroking of micro mist Fall, and, even when mist projection granulating heavy powder or the coarse grain more than the 100 μ m, Also can improve the bulk density of drying-granulating thing, and the spraying grain in when not producing mist projection granulating Adhere to that the yield rate that causes on the hothouse inwall reduces or because the spraying grain that adheres to Peel off the generation of the special-shaped shape powder that produces, can help in addition the save spaceization of device to reach High-qualityization of product, high-purity.
Claims (6)
1. spray drying granulation method is by the solids dispersion soln being sprayed at the indoor drying of carrying out of spray drying, thereby obtains the spray drying granulation method of the powder body of solids cohesion, it is characterized in that,
This spray drying chamber is made of the thermostability of bag shape or tubular and the multiple aperture plasma membrane of good fissility,
During spray drying, it is indoor by this solids dispersion soln is sprayed at spray drying, remove from this solids dispersion soln with hot blast and to desolvate and make it dry, only make the drying of the powder body gas that contains this powder body that exsiccant these solids condensed to some extent discharge this multiple aperture plasma membrane that gas partly passes this spray drying chamber of formation, can be at indoor this powder body of acquisition full dose of this spray drying, and
During mist projection granulating, by keeping under the volumetrical state of this spray drying chamber, this spray drying chamber intrinsic pressure be controlled to be roughly from 0 become negative pressure, this powder body gas is circled round in that this spray drying is indoor, thus powder body that can pelletize regulation particle diameter.
2. spray drying granulation method as claimed in claim 1 is characterized in that, the spray drying chamber during mist projection granulating intrinsic pressure be-200～+ 20Pa.
3. prilling apparatus with atomizing drying units is characterized in that having:
Form whole spray drying chamber by the thermostability of single bag shape or tubular and the multiple aperture plasma membrane of good fissility in fact;
The hothouse keeper that keeps the regulation shape of this spray drying chamber;
The solids dispersion soln is sprayed into fine droplet in the indoor aerosol apparatus of this spray drying;
Making the exsiccant hot blast of this fine droplet import to the indoor hot blast introducing mechanism of this spray drying;
Powder section in the indoor powder body gas of this spray drying and drying discharged that gas separates and should drying discharge gas be discharged to this spray drying outdoor, dismounting is equipped on the indoor exhaust gear of this spray drying freely; With
Adjust the pressure adjustmenting mechanism of the indoor pressure of this spray drying,
During spray drying, make this drying discharge gas and pass laterally from the spray drying indoor that forms by this multiple aperture plasma membrane, and,
During mist projection granulating, intrinsic pressure being controlled to roughly of this spray drying chamber become negative pressure from 0 with this exhaust gear and this pressure adjustmenting mechanism.
4. prilling apparatus with atomizing drying units as claimed in claim 3 is characterized in that, during mist projection granulating, and the side in the spray drying chamber, dismounting sets freely and suppresses the sidewall that this drying discharge gas passes.
5. prilling apparatus with atomizing drying units as claimed in claim 3 is characterized in that, the dismounting of hothouse keeper keeps the spray drying chamber freely.
6. prilling apparatus with atomizing drying units as claimed in claim 4 is characterized in that, the dismounting of hothouse keeper keeps the spray drying chamber freely.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP247620/02 | 2002-08-27 | ||
| JP247620/2002 | 2002-08-27 | ||
| JP2002247620A JP4113746B2 (en) | 2002-08-27 | 2002-08-27 | Spray drying / granulation method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1487258A true CN1487258A (en) | 2004-04-07 |
| CN100509100C CN100509100C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031550932A Expired - Lifetime CN100509100C (en) | 2002-08-27 | 2003-08-27 | Spray drying & granulating method and apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4113746B2 (en) |
| KR (1) | KR100908903B1 (en) |
| CN (1) | CN100509100C (en) |
| TW (1) | TWI237577B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100329124B1 (en) * | 1999-11-10 | 2002-03-21 | 손재익 | Low Pressure Nozzle Spray Drying System |
-
2002
- 2002-08-27 JP JP2002247620A patent/JP4113746B2/en not_active Expired - Lifetime
-
2003
- 2003-07-24 TW TW092120177A patent/TWI237577B/en not_active IP Right Cessation
- 2003-08-04 KR KR1020030053687A patent/KR100908903B1/en active IP Right Grant
- 2003-08-27 CN CNB031550932A patent/CN100509100C/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2004082005A (en) | 2004-03-18 |
| KR20040018916A (en) | 2004-03-04 |
| JP4113746B2 (en) | 2008-07-09 |
| KR100908903B1 (en) | 2009-07-23 |
| TWI237577B (en) | 2005-08-11 |
| CN100509100C (en) | 2009-07-08 |
| TW200406245A (en) | 2004-05-01 |
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