CN109351295A - A kind of microcapsules are granulated hierarchy system and microcapsule preparation method - Google Patents
A kind of microcapsules are granulated hierarchy system and microcapsule preparation method Download PDFInfo
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- CN109351295A CN109351295A CN201811209669.6A CN201811209669A CN109351295A CN 109351295 A CN109351295 A CN 109351295A CN 201811209669 A CN201811209669 A CN 201811209669A CN 109351295 A CN109351295 A CN 109351295A
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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
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
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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
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
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Abstract
A kind of microcapsules provided by the invention are granulated hierarchy system and microcapsule preparation method, the system include granulation tower；The air outlet of the granulation tower is connect with swirl classifying mechanism, for separating microcapsules with powder；The air inlet of the granulation tower is connect with pressure fan；The first outlet of the swirl classifying mechanism is connect with dust separation mechanism, and the dust separation mechanism is for separating and collecting powder.Microcapsules of the invention are granulated hierarchy system and microcapsule preparation method, and structure and technical process are simple, can efficiently separate microcapsules and powder.
Description
Technical field
The present invention relates to Micro-Encapsulation Technique field, hierarchy system and micro- is granulated more particularly, to a kind of microcapsules
Capsule preparation method thereof.
Background technique
Microcapsules are the miniature vessel or packing material with polymer, by solid, liquid or gas entrapment or are sealed up for safekeeping
In microencapsulation, become a kind of solia particle product.Wherein, the substance being embedded is known as core material, including flavors and fragrances, acidification
Agent, sweetener, pigment, lipid, vitamin, minerals, enzyme, microorganism, gas and other various additives.And embed core material
Realize that the substance of micro-capsule gelatinization is known as wall material, natural polymer, semi-synthetic macromolecule and synthesis high molecular material can be used in wall material
Deng.
There are many preparation methods of microcapsules, such as physical method, physical-chemical process, aqueous phase separation method, chemical method, interface are poly-
It is legal etc..Microcapsules food, in terms of be widely used.
In the preparation process of microcapsules, since auxiliary material is mostly powder, particle is thin, quantity is big, can be adhered to microcapsules
Surface.There is greatly difficulty in microcapsules and powder, will affect the quality of microcapsules in terms of separation.
Summary of the invention
(1) technical problems to be solved
The present invention provides a kind of microcapsules to be granulated hierarchy system and microcapsule preparation method, to solve microcapsules and auxiliary material
Powder is difficult to separate, and gained Microcapsules Size range is wide, and it is excessive to cross fine grained, influences in product the content of main matter and
The technical issues of evenness causes product particle uniformity not high, unstable quality.
(2) technical solution
In order to solve the above technical problems, according to an aspect of the present invention, providing a kind of microcapsules granulation hierarchy system, packet
Include granulation tower；
The air outlet of the granulation tower is connect with swirl classifying mechanism, for separating microcapsules with powder；The granulation
The air inlet of tower is connect with pressure fan；
The first outlet of the swirl classifying mechanism is connect with dust separation mechanism, and the dust separation mechanism is for separating
With collection powder.
Further, the dust separation mechanism includes separative unit and powder collector unit；The separative unit enters
Mouth is connected to the first outlet, and the first separation outlet of the separative unit is connect with the powder collector unit.
Further, the second separation outlet of the separative unit is connected to the entrance of the granulation tower.
Further, the second outlet of the swirl classifying mechanism is connect with fluidized bed, and the fluidized bed is micro- for drying
Capsule.
Further, airlock or the double-deck butterfly valve are set at the second outlet of the swirl classifying mechanism.
Further, the swirl classifying mechanism includes swirl classifying mechanism ontology, baffle and classification runner；It is described to lead
Fluid and the classification runner are located at swirl classifying mechanism body interior, and the baffle has hollow channel, and described
The side of baffle offers feeding-passage, and the classification runner is located in the hollow channel；Swirl classifying mechanism sheet
The top of body is provided with first outlet, and the first outlet is located at the top of the baffle.
Further, the outer sheath of the classification runner is equipped with baffle, and the baffle includes the first fixed frame and the
Two fixed frames and muti-piece deflector, the first fixed frame are located at the top of the classification runner, and have hollow duct；Described second
Fixed frame includes plectane and ring frame, and the ring frame is sheathed on the outside of the plectane, and the plectane is covered on described hollow logical
Road one end, and there is gap along the radial direction of the plectane between the plectane and the ring frame；The muti-piece deflector is along institute
State that hollow channel is circumferentially distributed, and the gap between two pieces of deflectors of arbitrary neighborhood forms the feeding-passage.
According to another aspect of the present invention, a kind of microcapsule preparation method is also provided, comprising:
The microcapsules and extra powder prepared carry out vortex separating treatment with granulation tower air inlet together；
Powder after being vortexed separating treatment carries out solid gas separation, and the powder separating obtained to solid gas and fine particle return
It receives and utilizes processing；
The particle left after vortex separating treatment is microcapsule granule.
Further, the microcapsule granule obtained after vortex separating treatment enters fluidized bed and is dried.
Further, the solid gas separation carries out in solid gas separator structure, and the solid gas separator structure includes that separation is single
Member and powder collector unit；
Entrance of the separating obtained powder of the solid gas from the second separation outlet and the granulation tower of connection separative unit
Fine powder reflux line enter the granulation tower and carry out secondary use, the dust escaped in separative unit is by the separative unit
First separation outlet enters the powder collector unit collection and handles.
(3) beneficial effect
A kind of microcapsules proposed by the present invention are granulated hierarchy system and microcapsule preparation method, and its advantages are mainly such as
Under:
By connecting granulation tower with swirl classifying mechanism, dust separation mechanism and fluidized bed divide with vortex the system respectively
The connection of grade mechanism makes the microcapsules by preparing in granulation tower, by separating, it is viscous can to efficiently reduce surface of microcapsule with powder
Attached powder, and obtained microcapsules fine particle is few, and particle uniformity is good；Meanwhile powder after separation and unqualified
Crossing fine grained can recycle, and reenter in the technical process for preparing microcapsules, to recycle.The present invention is in same equipment system
Microcapsule granulating, classification, lock out operation are realized in system.Its technical process is simple, good separating effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that hierarchy system is granulated according to a kind of microcapsules of the embodiment of the present invention；
Fig. 2 is the structural representation that the swirl classifying mechanism of hierarchy system is granulated according to a kind of microcapsules of the embodiment of the present invention
Figure；
Fig. 3 is the baffle structural schematic diagram of a kind of fluidized bed according to the present invention and fluidized bed prilling separation system；
Fig. 4 is the structural schematic diagram of the baffle of a kind of fluidized bed according to the present invention and fluidized bed prilling separation system；
Fig. 5 is the Microcapsules Size distribution map prepared according to a kind of microcapsule preparation method of the embodiment of the present invention 1；
Fig. 6 is the Microcapsules Size distribution map prepared according to a kind of microcapsule preparation method of the embodiment of the present invention 2；
Fig. 7 is the Microcapsules Size distribution map prepared according to a kind of microcapsule preparation method of the embodiment of the present invention 3；
Fig. 8 is the Microcapsules Size distribution map prepared according to a kind of microcapsule preparation method of comparative example 1 of the present invention；
Fig. 9 is the Microcapsules Size distribution map prepared according to a kind of microcapsule preparation method of comparative example 2 of the present invention；
In figure, 1- pressure fan；2- granulation tower；3- spray head；4- pipeline；5- swirl classifying mechanism；6- separative unit；7- powder
Collector unit；8- air-introduced machine；9- fluidized bed；10- feed pipe；11- is classified runner；12- second outlet；13- first outlet；14-
Swirl classifying mechanism ontology；15- baffle；The first fixed frame of 16-；The second fixed frame of 17-；18- deflector.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Shown in Figure 1, the present embodiment provides a kind of microcapsules to be granulated hierarchy system, including granulation tower 2, vortex classifier
Structure 5, the first dust separation mechanism and fluidized bed 9.Powder passes through certain process in granulation tower 2, forms microcapsules and produces
Product；Used technique can be common process, be also possible to innovative technique, as long as being capable of forming microcapsule product
?.It is understood that being provided with spray head 3 on the top of granulation tower 2, the lotion for being used to prepare microcapsules is sprayed by the spray head 3
Enter to inside granulation tower 2；Meanwhile it being additionally provided with the entrance to 2 delivered inside powder of granulation tower on the top of granulation tower 2, for example,
By pipeline 4 to 2 delivered inside powder of granulation tower
Due to having extra powder and being discharged with microcapsules, and powder is difficult to during producing microcapsule product
With microcapsule product natural separation.Granulation tower 2 has air outlet, and granulation tower 2 is discharged for the microcapsules after being granulated.Make granulation tower
2 air outlet is connect with swirl classifying mechanism 5, by the discharge of 2 air outlet of granulation tower include the product of microcapsules and powder together
Swirl classifying mechanism 5 is entered, separating treatment is carried out to microcapsules and powder by swirl classifying mechanism 5.
Whirlpool separator can be used in swirl classifying mechanism 5.Shown in Figure 2, swirl classifying mechanism 5 includes vortex classifier
Structure ontology 14, the classification runner 11 in swirl classifying mechanism ontology 14, feed pipe 10, first outlet 13 and second outlet 12
Two outlets.Feed pipe 10 is located at the side of swirl classifying mechanism ontology 14, and feed pipe 10 can be along swirl classifying mechanism ontology 14
Tangential direction arrangement, so that material is entered swirl classifying mechanism ontology along the tangential direction of swirl classifying mechanism ontology 14
In 14.The shaft of classification runner 11 can be arranged in a vertical direction, and the leaf position for being classified runner 11 can enter with feed pipe 10
Mouth position is corresponding, i.e. blade of the entrance of feed pipe 10 towards classification runner 11.
The material entered in swirl classifying mechanism ontology 14 is acted on through high-speed rotating classification runner 11, is carried out at classification
Reason, separates microcapsules with powder.Microcapsules and powder are separated using swirl classifying mechanism 5, swirl classifying mechanism 5 is high
The classification runner 11 of speed rotation can more efficiently separate microcapsules and powder.
First outlet 13 is connect with dust separation mechanism, and second outlet 12 is connect with fluidized bed 9.Wherein, first outlet 13
The top of swirl classifying mechanism 5 can be located at, unqualified, lighter in weight powder is discharged with gas conducive to dust or partial size；Second
Outlet 12 can be located at the bottom of swirl classifying mechanism 5, and conducive to partial size, qualified, heavier-weight microcapsules are discharged by bottom.It can be with
Understand, dust separation mechanism is at least a set of, there can also be more sets.It is cover when being provided with Duo Tao dust separation mechanism more
Dust separation mechanism is connect with the first outlet 13 of swirl classifying mechanism 5 respectively, to improve treatment effeciency.
It is discharged through the resulting powder of separating treatment by first outlet 13, enters dust separation mechanism.Powder is in dust point
It disembarks and carries out solid gas separation in structure, collect resulting powder after solid gas separation, be recycled.Wherein, granulation tower 2 into
Air port can be connect with pressure fan 1, convenient for the preparation of microcapsules in granulation tower 2.
Specifically, in a specific embodiment, swirl classifying mechanism include swirl classifying mechanism ontology, baffle with
It is classified runner；Baffle and classification runner are located at swirl classifying mechanism body interior, and baffle has hollow channel, and baffle
Side offer feeding-passage, classification runner is located in hollow channel；The top of swirl classifying mechanism ontology is provided with first
Outlet, first outlet are located at the top of baffle.
As shown in figure 3 and figure 4, baffle 15 can be the column structure with hollow channel to ginseng；Classification runner is located at this
In hollow channel；The shaft of classification runner is preferably overlapped with the axis of hollow channel, can be under the driving of driving mechanism at a high speed
Rotation.First outlet is located at the top of classification runner and baffle 15, also is located at the top of hollow channel.With powder and micro- glue
The material of capsule is after entering in swirl classifying mechanism ontology, under the action of being classified runner, microcapsules and lighter powder by into
Material channel enters in baffle 15, is separated from each other, lighter powder moves upwards and vortex classifier is discharged by first outlet
Swirl classifying mechanism is discharged by the second outlet of swirl classifying mechanism lower part in structure, heavier microcapsules.Using the above structure, can
Enable to recycle in the structure of baffle 15 and classification runner composition in the intrinsic material of swirl classifying mechanism, can be improved
Classification efficiency.
Further, baffle 15 includes the first fixed frame 16, the second fixed frame 17 and deflector 18.Deflector 18 is arranged
Between the first fixed frame 16 and the second fixed frame 17, deflector 18 is preferably vertically arranged with the first fixed frame 16, and with second
Fixed frame 17 is vertically arranged, and one end of any block deflector 18 is connected on the first fixed frame 16, and it is solid that the other end is connected to second
Determine on frame 17.By taking structure when baffle 15 is vertically arranged as an example, the first fixed frame 16 is located at the top of deflector 18, and second is solid
Determine the lower section that frame 17 is located at deflector 18, each deflector 18 is vertically arranged, and the first fixed frame 16 and the second fixed frame 17 are horizontal
Setting.Wherein, the first fixed frame 16 has hollow duct, and deflector 18 is circumferentially distributed along hollow duct.
All there is gap between two pieces of deflectors 18 of arbitrary neighborhood, which is the feeding-passage for constituting baffle 15.Also,
Any two pieces of deflectors 18 do not contact.Since each deflector 18 is along the circumferentially distributed of hollow duct, each deflector 18 is enclosed
At space and the first fixed frame 16 hollow duct, i.e., composition baffle 15 be in column structure hollow channel.Classification turns
The diameter for the Space Cross Section that the tip of wheel is surrounded is slightly less than the diameter of hollow channel, makes to be classified runner energy in hollow channel
It is enough freely rotated, without being influenced by baffle 15.
Any block deflector 18 can structure having the same.Deflector 18 includes front face, rear plate face, first side, the
It is illustrated for the plate structure of dual side-edge, third side and four side.Wherein, first side and second side are opposite
Two sides, third side and four side are opposite two sides.Third side is bonded with the first fixed frame 16, four side
It is bonded with the second fixed frame 17.
It is inner circumferential close to the circumference side of hollow duct axis since the first fixed frame 16 has hollow duct, it is separate
The circumference side of hollow duct axis is periphery.The first side of any deflector 18 close to the periphery of the first fixed frame 16,
Close to the periphery of the second fixed frame 17, may be alternatively located on the periphery of the first fixed frame 16 and the second fixed frame 17；Second side is leaned on
The inner circumferential of nearly first fixed frame 16.
Spacing of the two pieces of deflectors 18 of arbitrary neighborhood between the first side of 16 periphery of the first fixed frame is identical
's；Spacing of the two pieces of deflectors 18 of arbitrary neighborhood between the second side of 16 inner circumferential of the first fixed frame is also equal；And
And the second side of any deflector 18 is towards the plate face of adjacent deflector 18, but has interval therebetween, so that adjacent
Two pieces of deflectors 18 between have gap, formed feeding-passage.That is, first side and second side of any block deflector 18
Side simultaneously on the periphery of fixed frame, the extended line of any block deflector 18 without hollow channel axis.
It is preferred that the plate face of deflector 18 is arranged along the tangential direction of the formed cylindrical structure of hollow channel, make fluidised form compound
Material can enter in hollow channel along the tangential direction of hollow channel, or be similar to tangential direction and enter in hollow channel,
Efficiency and effect that powder and microcapsules are separated in hollow duct through high-speed rotating classification runner can effectively be improved
Fruit.
Specifically, the first fixed frame 16 and the second fixed frame 17 can be plate structure, as long as consolidating convenient for deflector 18
It is fixed.As a specific implementation manner, the first fixed frame 16 is the structure with hollow duct, preferably the second fixed frame
17 be the frame structure being made of plectane and ring frame.
Specifically, shown in Figure 4, when the second fixed frame 17 is the frame structure that plectane and ring frame are constituted, ring frame
Internal diameter be greater than the diameter of plectane, and be set in the outside of plectane.Wherein, ring frame at least one, can have multiple；And
And along the radial direction of plectane, there is gap between ring frame and plectane.
Further, the diameter of plectane can be equal to or be slightly less than the diameter of 15 hollow channel of baffle, the preferably axis of plectane
Line is overlapped with the axis of hollow channel；The microcapsules of material after separation entered in hollow channel can be by plectane and annular
Gap between frame enters in swirl classifying mechanism ontology, and is discharged by the second outlet of swirl classifying mechanism body lower part.
Wherein, being covered on the plectane at hollow channel can be avoided material thus place enters in hollow channel.
On the basis of the above embodiments, the present embodiment provides a kind of microcapsules to be granulated hierarchy system, dust separation mechanism
Including separative unit 6 and powder collector unit 7；The entrance of separative unit 6 is connected to first outlet 13, and the first of separative unit 6
Separation outlet is connect with powder collector unit 7.Wherein, any set dust separation mechanism can structure having the same, with a set of powder
It is illustrated for the structure of dirt separating mechanism.
Specifically, dust separation mechanism passes through the setting of separative unit 6 and powder collector unit 7, to by swirl classifying
The powder that mechanism 5 enters separative unit 6 carries out solid gas separation.Wherein, cyclone separator can be used in separative unit 6.
The powder isolated is recycled processing by separative unit 6；The fine dust of crossing of escape enters powder collection
Unit 7 carries out trapping post-processing.Wherein, cloth bag trap can be used in powder collector unit 7.First separation outlet may be provided at point
Top from unit 6 was conducive to the discharge of fine dust.It is understood that powder collector unit 7 can be connected with air-introduced machine 8.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsules to be granulated hierarchy system, separative unit 6
Second separation outlet is connected to the entrance of granulation tower 2.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsules to be granulated hierarchy system, vortex classifier
The second outlet of structure is connect with fluidized bed, and fluidized bed is for drying microcapsules.The resulting microcapsule product of separating treatment is by second
12 discharge of outlet enters fluidized bed 9.It include that the microcapsule product of powder is dried in fluidized bed 9.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsules to be granulated hierarchy system, vortex classifier
Airlock or the double-deck butterfly valve are set at the second outlet of structure.Pass through airlock or the double-deck butterfly between second outlet 12 and fluidized bed 9
Valve is separated, and avoids leakage air, and powder can be transferred to fluidized bed by the movement of airlock or the double-deck butterfly valve.Using
Above structure can be sufficiently separated microcapsules and powder.Also, it during separating microcapsules and powder, may also function as dry
Dry effect.
The lower channel of second separation outlet and granulation tower 2 is separated by airlock or the double-deck butterfly valve, avoids revealing
Air, and powder can be transferred to conveyance conduit by the movement of airlock or the double-deck butterfly valve；Conveyance conduit will by air blower
Powder is transferred to spray tower gun inlets.
Specifically, the second separation outlet can be located at the lower part or bottom of separative unit 6, facilitate compliance with the powder of particle requirement
Material is discharged by the lower part of separative unit 6.Second separation outlet is connected with the entrance of granulation tower 2, enables to isolate powder and weighs
It newly enters during preparing microcapsules, material consuming can either be reduced, reduce cost, and can be avoided and generate extra powder
Other treatment processes save process.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation methods, to obtain partial size 100
For the purpose of microcapsules between~500 microns, comprising:
The microcapsules and extra powder prepared carry out vortex separating treatment with granulation tower air inlet together；
Powder after being vortexed separating treatment carries out solid gas separation, and the powder separating obtained to solid gas and tiny fast particle carry out
Recycling processing；
The particle left after vortex separating treatment is microcapsule granule.
Specifically, microcapsules and powder carry out vortex separating treatment together, and the separation that can be improved microcapsules and powder is imitated
Fruit and separative efficiency.It is vortexed the resulting powder of separating treatment further to separate through solid gas, powder isolate and escape
It can be recycled in time.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation methods, and microcapsules are in granulation tower
In be prepared, the atomising mechanism revolving speed in granulation tower be 1800-2400rpm.The revolving speed of atomising mechanism is maintained at the range, energy
The encapsulated efficiency of powder is enough improved, and is conducive to powder and forms microcapsules of the partial size at 100~500 microns.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation methods, and microcapsules are in granulation tower 2
In be prepared, prepare the lotion of microcapsules spray velocity be 80-120L/h；The air quantity of the air inlet of granulation tower 2 is 3500-
4500m3/h。
Specifically, by configured microcapsule emulsion, such as DHA microcapsule emulsion, in spraying mode, by granulation tower 2
The spray head 3 on top is injected in granulation tower 2.Microcapsules are prepared using above-mentioned condition, can reasonably control microcapsules
Granular size and preparation efficiency reduce the consuming of powder.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation method, the air inlet temperature of granulation tower 2
Degree is 120-180 DEG C, and leaving air temp is 50-100 DEG C.It specifically, can by controlling the air inlet and the outlet temperature of granulation tower 2
Further increase the efficiency of microcapsules preparation.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation methods, after being vortexed separating treatment
Obtained microcapsule granule can be dried into fluidized bed.After being vortexed separating treatment resulting microcapsules material according to
Degree of drying, it is selective into being dried in fluidized bed 9 to get arriving final microcapsule product.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation method, solid gas is separated in solid gas
It is carried out in separating mechanism, solid gas separator structure includes separative unit and powder collector unit；
The separating obtained powder of solid gas is returned from the second separation outlet of connection separative unit and the fine powder of the entrance of granulation tower
Flow tube road enters granulation tower and carries out secondary use, and the dust escaped in separative unit is entered by the first separation outlet of separative unit
Powder collector unit collection processing.
First separation outlet of separative unit 6 is connected with the entrance of powder collector unit 7；Consolidated in separative unit 6
That escapes after gas separation crosses fine dust via the first separation outlet discharge, enters in powder collector unit 7 and is recycled.
Second separation outlet of separative unit 6 is connected with the entrance of granulation tower 2.The separating obtained powder of solid gas is from connection
The fine powder reflux line that second separation outlet of separative unit 6 is connected to the entrance of granulation tower enters granulation tower 2 and carries out secondary benefit
With the dust escaped in separative unit enters 7 collection of collector unit processing.
On the basis of the various embodiments described above, the present embodiment provides a kind of microcapsule preparation method, swirl classifying processing exists
It is carried out in swirl classifying mechanism, the revolving speed of swirl classifying mechanism is 550-650rpm；Namely the revolving speed of classification runner is 550-
650rpm.The revolving speed of swirl classifying mechanism can not only separate microcapsule product and powder, additionally it is possible to isolate in the range
Fine grained effectively separates microcapsules and powder, and obtains partial size between 100~500 microns, micro- glue of even particle size
Capsule product.
Effect of the invention is illustrated using specific embodiment and comparative example below.
Embodiment 1
A kind of microcapsule preparation method, the inlet air temperature in granulation tower are 150 DEG C, and leaving air temp is 75 DEG C, in granulation tower
Atomising mechanism revolving speed be 2000rpm；Emulsion spray speed is 100L/h, and the intake of granulation tower is 4000m3/h；
Entered in swirl classifying mechanism by material prepared by granulation tower, the revolving speed that runner is classified in swirl classifying mechanism is
600rpm.For material containing microcapsules and powder in swirl classifying mechanism after separating treatment, powder enters dust separation mechanism
To recycle powder, microcapsules, which enter in fluidized bed, to be dried up to final microcapsule product.The partial size of gained microcapsules is such as
Shown in Fig. 5, half-peak breadth is 250 microns, and average grain diameter is 267 microns；
Embodiment 2
A kind of microcapsule preparation method, the inlet air temperature in granulation tower are 130 DEG C, and leaving air temp is 90 DEG C, in granulation tower
Atomising mechanism revolving speed be 2250rpm；Emulsion spray speed is 90L/h, and the intake of granulation tower is 4000m3/h；By granulation tower
The material of preparation enters in swirl classifying mechanism, and the revolving speed that runner is classified in swirl classifying mechanism is 635rpm.Contain microcapsules
With the material of powder in swirl classifying mechanism after separating treatment, powder enters dust separation mechanism to recycle powder, microcapsules
Into being dried in fluidized bed up to final microcapsule product.The partial size of gained microcapsules is as shown in fig. 6, half-peak breadth is
250, average grain diameter is 266 microns.
Embodiment 3
A kind of microcapsule preparation method, the inlet air temperature in granulation tower are 150 DEG C, and leaving air temp is 68 DEG C, in granulation tower
Atomising mechanism revolving speed be 1900rpm；Emulsion spray speed is 110L/h, and the intake of granulation tower is 4250m3/h；By being granulated
The material of tower preparation enters in swirl classifying mechanism, and the revolving speed that runner is classified in swirl classifying mechanism is 580rpm.Contain micro- glue
For the material of capsule and powder in swirl classifying mechanism after separating treatment, powder enters dust separation mechanism to recycle powder, micro- glue
Capsule, which enters in fluidized bed, to be dried up to final microcapsule product.The partial size of gained microcapsules is as shown in fig. 7, half-peak breadth is
150, average grain diameter is 228 microns.
Comparative example 1
A kind of microcapsule preparation method, the inlet air temperature in granulation tower are 100 DEG C, and leaving air temp is 40 DEG C, in granulation tower
Atomising mechanism revolving speed be 1800rpm；Emulsion spray speed is 100L/h, and the microcapsules sprayed enter fluidized bed and carry out secondary do
Dry, there is even peak, is unable to get as shown in figure 8, the accounting amount of partial size under 100 microns is larger in the partial size of gained microcapsules
Half-peak breadth, particle are very uneven.
Comparative example 2
A kind of microcapsule preparation method, the inlet air temperature in granulation tower are 200 DEG C, and leaving air temp is 120 DEG C, in granulation tower
Atomising mechanism revolving speed be 2000rpm；Emulsion spray speed is 120L/h, and the intake of granulation tower is 4000m3/h；
Entered in swirl classifying mechanism by material prepared by granulation tower, the revolving speed that runner is classified in swirl classifying mechanism is
300rpm.For material containing microcapsules and powder in swirl classifying mechanism after separating treatment, powder enters dust separation mechanism
To recycle powder, microcapsules, which enter in fluidized bed, to be dried up to final microcapsule product.Products obtained therefrom as shown in figure 9,
Still accounting is more for fine particle under 100 microns.
Microcapsules of the invention are granulated hierarchy system and microcapsule preparation method, and the system is by making granulation tower and vortex point
The connection of grade mechanism, the first dust separation mechanism and fluidized bed connect with swirl classifying mechanism respectively, makes by preparing in granulation tower
Microcapsules can efficiently reduce the powder of surface of microcapsule adherency by separating twice with powder；Meanwhile after separation
Powder can recycle, and satisfactory powder reenters in the technical process for preparing microcapsules, to recycle.Its technique mistake
Journey is simple, good separating effect.
Finally, method of the invention is only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of microcapsules are granulated hierarchy system, which is characterized in that including granulation tower；
The air outlet of the granulation tower is connect with swirl classifying mechanism, for separating microcapsules with powder；The granulation tower
Air inlet is connect with pressure fan；
The first outlet of the swirl classifying mechanism is connect with dust separation mechanism, and the dust separation mechanism is for separating and receiving
Collect powder.
2. system according to claim 1, which is characterized in that the dust separation mechanism includes that separative unit and powder are received
Collect unit；The entrance of the separative unit is connected to the first outlet, the separative unit first separation outlet with it is described
The connection of powder collector unit.
3. system according to claim 2, which is characterized in that the second separation outlet of the separative unit and the granulation
The entrance of tower is connected to.
4. system according to claim 1, which is characterized in that the second outlet and fluidized bed of the swirl classifying mechanism connect
It connects, the fluidized bed is for drying microcapsules.
5. system according to claim 4, which is characterized in that wind is closed in setting at the second outlet of the swirl classifying mechanism
Device or the double-deck butterfly valve.
6. system described in -5 according to claim 1, which is characterized in that the swirl classifying mechanism includes swirl classifying mechanism sheet
Body, baffle and classification runner；The baffle and the classification runner are located at swirl classifying mechanism body interior, described
Baffle has hollow channel, and the side of the baffle offers feeding-passage, and the classification runner is located at described hollow
In channel；The top of swirl classifying mechanism ontology is provided with first outlet, and the first outlet is located at the baffle
Top.
7. system according to claim 6, which is characterized in that the outer sheath of the classification runner is equipped with baffle, described
Baffle includes the first fixed frame and the second fixed frame and muti-piece deflector, and the first fixed frame is located at the upper of the classification runner
Portion, and there is hollow duct；Second fixed frame includes plectane and ring frame, and the ring frame is sheathed on outside the plectane
Side, the plectane are covered on described hollow channel one end, and along the radial direction of the plectane between the plectane and the ring frame
With gap；The muti-piece deflector is circumferentially distributed along the hollow channel, and between two pieces of deflectors of arbitrary neighborhood
Gap forms the feeding-passage.
8. a kind of microcapsule preparation method characterized by comprising
The microcapsules and extra powder prepared carry out vortex separating treatment with granulation tower air inlet together；
Powder after being vortexed separating treatment carries out solid gas separation, and the powder separating obtained to solid gas and fine particle carry out recycling benefit
With processing；
The particle left after vortex separating treatment is microcapsule granule.
9. according to the method described in claim 8, it is characterized in that, the microcapsule granule obtained after vortex separating treatment enters stream
Change bed to be dried.
10. according to the method described in claim 8, it is characterized in that, the solid gas separation carried out in solid gas separator structure, institute
Stating solid gas separator structure includes separative unit and powder collector unit；
The separating obtained powder of the solid gas exports thin with the entrance of the granulation tower from the second separation of connection separative unit
Powder reflux line enters the granulation tower and carries out secondary use, and the dust escaped in separative unit is by the first of the separative unit
Separation outlet enters the powder collector unit collection and handles.
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