CN207187165U - Integral type solution freeze concentration equipment - Google Patents
Integral type solution freeze concentration equipment Download PDFInfo
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- CN207187165U CN207187165U CN201720940805.3U CN201720940805U CN207187165U CN 207187165 U CN207187165 U CN 207187165U CN 201720940805 U CN201720940805 U CN 201720940805U CN 207187165 U CN207187165 U CN 207187165U
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Abstract
It the utility model is related to solution concentration technique field, more particularly to integral type solution freeze concentration equipment, its structure includes shaving heat exchanger, rotating shaft in heat exchanger, the spiral scraper of twisted rotary shaft, it is connected to the crystallizing and washing room of the heat-insulation and heat-preservation of shaving heat exchanger opening, the wall of shaving heat exchanger is freezing wall, rotating shaft is connected with motor, the axis direction of the rotating shaft is identical with the axis direction of crystallizing and washing room, the top of crystallizing and washing room is provided with the water tank of precooling washings and discharges the Freeing Pipe of the crystallizing and washing room air, water intaking valve is provided between water tank and crystallizing and washing room, the cavity of crystallizing and washing room is provided with the dividing plate of barrier ice crystal, outer circulation loop is connected between shaving heat exchanger and crystallizing and washing room, the solution freeze concentration equipment has compact-sized, the advantages of concentrated effect is good.
Description
Technical field
It the utility model is related to solution concentration technique field, and in particular to integral type solution freeze concentration equipment.
Background technology
The concentration usual way of the aqueous solution has：1）It is concentrated by evaporation, is evaporated using atmospheric evaporation and single-action or multiple-effect vacuum
It is evaporated concentration.This method technology maturation, is widely used, but its requirement is carried out at high temperature, is easily destroyed heat-sensitive component
So that it is denatured or cause fragrance volatilizing or sapidity ingredient to lose.For example, when being concentrated by evaporation Juice, vitamin is often caused
Destroy, color burn, the negative effects such as taste and flavor changes.2）Ultrafiltration or nanofiltration concentration, using membrane separation technique, in pressure
Under the hydrone in solution is passed through pellicle, and molecular cut off is more than the other materials of hydrone, so as to what is concentrated
Solution.The shortcomings that using this method, when Various Complex component, particularly colloid is contained in solution, fenestra is easily blocked
Plug, or membrane poisoning failure.3）Absorb（Agent）Concentration, uses water absorbing agent（Such as molecular sieve, silica gel）Absorb the water in the aqueous solution
Divide, reach the purpose of concentrate solution.If however, contain complex component in solution（Particularly colloid）When, easily pollute water absorbing agent
Make its failure, and absorbent regeneration is difficult, thus limit its extensive use.
To overcome the problems of above-mentioned method for concentration, there is the method for freeze concentration, this method handle in prior art
Solution is cooled to below freezing so that and part water freezing is separated out so that as separable pure ice crystal, then ice crystal is separated,
So as to obtain increasing the solution of concentration.
Wherein, freeze concentration is divided into layer crystallization（Also referred to as progressive crystallization）With floated crystallization.Layer crystallization freezing concentration refers to
Freeze the ice crystal covering that stratiform is formed on wall.Required equipment is relatively simple, easily realizes.But it can be wrapped in the ice crystal of layer crystallization
Wrap up in, carry a considerable amount of mother liquors secretly, so that mother liquor can not separate from ice crystal, cause the loss of active ingredient solute.Moreover, layer
The ice crystal of crystallization is once formed and is covered in for providing freezing chill surface, and the heat and mass speed of whole shrinkage equipment is meeting
It is greatly reduced, the process of such solution concentration also becomes that extremely slowly, cocnentration factor can not be effectively improved.On the other hand, prior art is adopted
The aqueous solution being cooled to scraped surface heat exchanger below freezing, then moisture is frozen, then scraper is again constantly by heat exchanger system
A large amount of icings on huyashi-chuuka (cold chinese-style noodles), which are scraped and are transferred to, to be suspended in solution, forms the ice slurry being made up of ice crystal and mother liquor.Ice crystal then leads to
So-called Ostwald ripening effect is crossed, hundreds of microns of final size is generated as from initial several micron order sizes, from
And it is possible to economically realize the separation of ice crystal and mother liquor.
In recent years, substantial amounts of explore and study has been done in application of China scientific worker to freeze concentration, although existing phase
Document report this technology of freeze concentration, but the laboratory stage that current R＆D work mainly still stops are closed, is especially being adopted
In terms of research method and experimental facilities, the experimental provisions or glass apparatus for using simple designs substantially not special more
Efficient experimental facilities.And freeze concentration process is the crystallization process of a heat and mass for being related to water, it is equipped reasonable
Whether, the effect of freeze concentration will be directly affected.
In addition, being found in practice, the separation of the ice crystal and mother liquor of freeze concentration is a problem.Because ice after curing
Brilliant particle still very little, has huge specific surface area, natural filtration can not be by sticky mother liquor thoroughly from the ice crystal of natural packing
Middle separation, and substantial amounts of mother liquor still can adhesive retention between ice crystal.The existing industrial method using centrifugation carries out solid-liquid point
From attempting to overcome the viscosity and surface tension of sticky mother liquor using centrifugal force, to get rid of liquid phase.However, the three-phase diagram from water
Understand, the melting point of ice rises with the increase of pressure.Therefore after ice crystal is pressurized, can produce " pressure melts effect ", i.e. a part of ice
Crystalline substance melts into water in centrifugal force field by pressure, and filter screen is together passed through with mother liquor, and another part ice crystal is pressurized and merged, and forms closed pore ice
Cake, the characteristic of the stacking bed porous of such ice crystal are destroyed, and cause the mother liquor in ice crystal can not be thrown away by centrifugal force,
So that it is unable to reach the effect that ice crystal separates with mother liquor.
The content of the invention
Above-mentioned technical problem be present for prior art, the purpose of this utility model is to provide one kind being capable of efficient concentration
The integral type solution freeze concentration equipment of solution, the solution freeze concentration equipment have the advantages of compact-sized, concentrated effect good
The advantages of.
One of to achieve the above object, the utility model provides following technical scheme：
There is provided integral type solution freeze concentration equipment, including shaving heat exchanger, the rotating shaft in the heat exchanger, surround
The spiral scraper of the rotating shaft, be connected to the shaving heat exchanger opening heat-insulation and heat-preservation crystallization-washing chamber, the shaving
The wall of heat exchanger is freezing wall, and the rotating shaft is connected with motor, the axis direction of the rotating shaft and the crystallization-washing
The axis direction of room is identical, and the top of the crystallization-washing chamber is provided with described in raw material storage tank, the water tank of precooling washings and discharge
The Freeing Pipe of crystallization-washing room air, water intaking valve is provided between the water tank and the crystallization-washing chamber, it is described to crystallize-wash
The cavity for washing room is provided with the dividing plate of barrier ice crystal, and outer circulation is connected between the shaving heat exchanger and the crystallization-washing chamber and is returned
Road.
Wherein, the bottom of the shaving heat exchanger is connected with material box and product storage tank, and the material box passes through inlet valve
It is connected with the bottom of the shaving heat exchanger, the product storage tank is connected by blow-off valve with the shaving heat exchanger.
Wherein, the bottom of the shaving heat exchanger offers material mouth, and the material mouth is plugged with efferent duct, the material box and
The product storage tank is connected with the efferent duct.
Wherein, the outer circulation loop is connected by connecting the efferent duct with the bottom of the shaving heat exchanger.
Wherein, the bottom surface of the shaving heat exchanger is set to inclined-plane, and the material mouth is opened in the end that the inclined-plane declines.
Wherein, the wall of the crystallization-washing chamber is double-deck wall, is the air of heat-insulation and heat-preservation between the double-deck wall
Layer；
Wherein, the double-deck wall is optical clear bilayer wall.
Wherein, the rotating shaft is passed from the bottom of the shaving heat exchanger and is connected with the motor, the driving
Motor connection has speed regulator.
Wherein, the freezing wall of the shaving heat exchanger provides low-temperature receiver by the first refrigeration unit, and the water tank passes through the
Two refrigeration units provide low-temperature receiver；
First, second refrigeration unit is vapor compression refrigeration unit or semiconductor refrigerating unit.
Wherein, the solution freezing equipment is also associated with PLC, and the PLC is provided with touch-screen display.
To achieve the above object two, the utility model provides following technical scheme：
The beneficial effects of the utility model：
（1）Integral type solution freeze concentration equipment of the present utility model, the freezing wall freezing and crystallizing of shaving heat exchanger are treated
Moisture in concentrate solution, the spiral scraper in shaving heat exchanger scrape the ice crystal on freezing wall and are urged to heat-insulation and heat-preservation
Crystallization-washing chamber to form ice crystal stacking bed, external circulation line make solution to be concentrated shaving heat exchanger and crystallization-washing chamber it
Between circulate, be full of whole crystallization-washing chamber to ice crystal is stacking bed, it is stacking bed to be cooled to 0 DEG C of washing water washing ice crystal in advance, washes
Wash water displace ice crystal it is stacking bed in concentrated mother liquor, and make crystal ice granule crystalline growth, so as to obtain preferable concentrated mother liquor；
Compared with prior art, the utility model freezing concentrating device is compact-sized, and its scraper is set to spiral, can not only scrape freezing
The ice crystal of wall, and it is stacking bed to form the ice crystal of compacting that ice crystal is smoothly urged into crystallisation chamber, consequently facilitating subsequent wash pressure
Concentrated mother liquor in real crystallization, improves concentrated effect；In addition, can be crystallized in its crystallisation chamber, and can is quickly intactly washed
The stacking bed interior concentrated mother liquor of ice crystal is displaced, efficiently completes solution concentration.
Brief description of the drawings
Fig. 1 is the structural representation of integral type solution freeze concentration equipment of the present utility model；
Fig. 2 is the structural representation of the shaving heat exchanger of integral type solution freeze concentration equipment of the present utility model.
Reference：Shaving heat exchanger --- 1；Freeze wall --- 2；Rotating shaft --- 3；Spiral scraper --- 4；Knot
Crystalline substance-washing chamber --- 5, air layer --- 51；Water tank --- 6；Freeing Pipe --- 7；Water intaking valve --- 8；Dividing plate --- 9；Follow outside
Loop back path --- 10；Material box --- 11；Product storage tank --- 12；Inlet valve --- 13；Blow-off valve --- 14；Material mouth ---
15；Efferent duct --- 16；Motor --- 17；First refrigeration unit --- 18；Second refrigeration unit --- 19；PLC is controlled
Device --- 20；Speed regulator --- 21.
Embodiment
The utility model is described in detail below in conjunction with specific embodiment and accompanying drawing.
Integral type solution freeze concentration equipment as shown in Figure 1, there is shaving heat exchanger 1, and the inwall of shaving heat exchanger 1 is freezing
Wall 2, freezing wall 2 come the solution that provides low-temperature receiver so as to freeze in shaving heat exchanger, make to treat dense by the first refrigeration unit 18
Moisture crystallization in contracting solution, as shown in Fig. 2 setting rotating shaft 3 in shaving heat exchanger 1, rotating shaft 3 connects the driving for being provided with driving force
Motor 17, the rotor shaft direction of rotating shaft 3 is identical with the length direction of crystallization-washing chamber 5 and rotating shaft 3 is provided with scraper, and scraper is spiral
Formula scraper 4, the open communication of shaving heat exchanger 1 have crystallization-washing chamber 5 of heat-insulation and heat-preservation, and during operation, spiral scraper 4 scrapes
The ice crystal on wall 2 is freezed, ice crystal rotation is urged in crystallization-washing chamber 5 to form accumulation crystallizing bed, crystallization-washing chamber 5
Top is provided with water tank 6 and Freeing Pipe 7, and water tank 6 is provided with the second refrigeration unit 19, its can precooling washings to 0 DEG C, washings precooling
After flow to that ice crystal is stacking bed, makes crystal ice granule crystalline growth, and displace concentrated mother liquor completely, drastically increase concentration effect
Fruit.Preferably, the first refrigeration unit 18, the second refrigeration unit 19 are vapor compression refrigeration unit or semiconductor refrigerating unit.Water
Water intaking valve 14 and Freeing Pipe 7 are provided between case 6 and crystallization-washing chamber 5, charging when, Freeing Pipe 7 be used for discharge crystallization-
The air of washing chamber 5, allows material liquid smoothly to enter.In the freeze concentration stage, volumetric expansion caused by solution freezes, on a small quantity
Solution is discharged from Freeing Pipe, so as to keep the normal pressure of crystallization-washing chamber 5.The inner chamber of crystallization-washing chamber 5 is additionally provided with barrier
The dividing plate 9 of crystallization, outer circulation loop 10 is communicated between 1 bottom of shaving heat exchanger and the top of crystallization-washing chamber 5, is followed outside
The outlet of loop back path 10 is connected with the top of crystallization-washing chamber 5, the entrance in outer circulation loop 10 and the bottom of shaving heat exchanger 1
Connection, during work, the solution to be concentrated in crystallization-washing chamber 5 oozed dividing plate 9, and shaving heat exchange is back to from outer circulation loop 10
Device 1, so as to continue to carry out freeze concentration again.
In the present embodiment, the bottom of shaving heat exchanger 1 is connected with the material box 11 for storing solution to be concentrated and collected and concentrates
Inlet valve 13, product storage tank 12 and shaving are provided between the bottom of the product storage tank 12 of solution, material box 11 and shaving heat exchanger 1
It is provided with blow-off valve 8 between the bottom of heat exchanger 1, inlet valve 13 and blow-off valve 8 can guarantee that concentration processes are compact and coherent progress.Separately
Outside, the bottom of shaving heat exchanger 1 offers material mouth 15, and material mouth 15 connects efferent duct 16, and material box 11 and product storage tank 12 connect
Efferent duct 16 is connected to, beneficial to the structure for simplifying enrichment facility.And outer circulation loop 10 is also connected to efferent duct 16, therefore, dense
In compression process, by controlling related valve to can control corresponding concentration processes, the continuity of concentration processes is substantially increased.
In the present embodiment, the bottom surface of shaving heat exchanger 1 is inclined-plane, and material mouth 15 is opened in the end of inclined-plane decline, so as to energy
Quickly and completely pour out sticky concentrate solution.
In the present embodiment, the wall of crystallization-washing chamber 2 is double-deck wall, is the air of heat-insulation and heat-preservation between double-deck wall
Layer 51, so as to play a part of heat-insulation and heat-preservation, prevents crystals melt.
In the present embodiment, through the bottom of shaving heat exchanger 1 and motor 17, the motor is band gearbox for rotating shaft 3
Motor 17, to change the power output of motor 17；Motor 17 is also associated with adjuster, consequently facilitating adjusting
The rotating speed of turn over axle 3.
In the present embodiment, the solution freeze concentration equipment is also associated with PLC 20, and PLC 20, which is provided with, to be touched
Panel type display, the PLC 20 are provided with touch-screen display, PLC be adjustment control and monitor solution concentrate into
Journey, then monitoring result is shown on touch-screen display.
Simulated test
Simulated test is carried out to the integral type solution freeze concentration equipment described in embodiment 1, operating procedure is as follows：
1. filling 2.5L juice solutions to be concentrated in material box 11, the initial concentration of the juice solution is 10Brix,
Red is dyed so as to the simulation grape juice solution of observation with pigment；
2. fill 1.3L distilled water in water tank 6.
3. the rotating speed for setting spiral scraper 4 in shaving heat exchanger is 200rpm；
5. starting the second refrigeration unit, washings are freezed, the temperature of washings is 0+℃；
B, inlet valve 13 is opened, solution is flow automatically from material box 11 and enters and be full of crystallization-washing chamber 5, air is from the gas that escapes
Pipe 7 escapes, and closes inlet valve 13；
C, motor 17, shaving heat exchanger 1 and outer circulation loop starts are opened；
D, the first refrigeration unit 18 of shaving heat exchanger 1 is opened, solution refrigeration cool-down to be concentrated in it；
In shaving heat exchanger, solution temperature is reduced to the freezing point of solution from room temperature, is even slightly colder than freezing point（Solution is temporarily located
In supercooled state）, solution takes place phase transformation, separates out ice crystal and discharges latent heat, solution temperature is risen back to solid-liquid phase
Poised state.The generation of ice crystal afterwards（Heat release）With the heat transfer of chill surface（Refrigeration）Up to causing to balance, ice slurry system is in solid-liquid phase
Poised state.In addition, as crystallization-washing chamber 5 constantly accumulates ice crystal, the concentration of grape juice also gradually rises, until in spiral
It is stacking bed that a close ice crystal is formed under the pushing of formula scraper 4.The load of motor 17 also raises all the way simultaneously, is set when up to cause
During certain load value, the spiral refrigeration unit 18 of scraper 4 and first is closed down.Blow-off valve 14 and water intaking valve 8 are opened simultaneously, allows concentration
Mother liquor slowly flow to product storage tank 12 from the bottom of shaving heat exchanger 1, meanwhile, the washings that 0 °C of equivalent are flowed into crystallization-washing chamber
5, the concentrated mother liquor stacking bed to ice crystal plays equivalent metathesis from top to down, and stacking bed take out of ice crystal after scrubbed is tied
Behind crystalline substance-washer room 5, the obtained ice crystal post without concentrated mother liquor.By the solution of first time freeze concentration, concentration is from 10
Brix increases to 18 ~ 20 Brix, and concentration increase by 80 ~ 100%, solution capacity is reduced to 1.1 ~ 1.3L from 2.5 L, it is seen that concentration
Positive effect.
Certainly, operated if desired for the concentrate solution of higher concentration, then freeze concentration that can be multiple.Experiment proves, to 10
Brix solution carries out the freeze concentration of 3 times, each L of material liquid 2.5, obtains about 18 Brix 3 ~ 3.9 L once concentration altogether
Liquid, then a concentrate for taking concentration to be 18 Brix carry out secondary concentration with freeze concentration instrument, and it is 28-30 to obtain concentration again
Brix 1.2 ~ 1.3L secondary concentration liquid, the concentrate of higher concentration can be obtained.Finally, the ice crystal after measurement is scrubbed
Stacking bed melt water sugar part, sugared concentration is about 0.05 ~ 0.1%.
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality
With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general
It is logical it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this
The spirit and scope of utility model technical scheme.
Claims (9)
1. integral type solution freeze concentration equipment, it is characterized in that：Including shaving heat exchanger, the rotating shaft in the heat exchanger,
Around the rotating shaft spiral scraper, be connected to the shaving heat exchanger opening heat-insulation and heat-preservation crystallization-washing chamber, it is described
The wall of shaving heat exchanger is freezing wall, and the rotating shaft is connected with motor, the axis direction of the rotating shaft and the crystallization-
The axis direction of washing chamber is identical, the top of the crystallization-washing chamber be provided with the water tank of precooling washings and discharge the crystallization-
The Freeing Pipe of room air is washed, water intaking valve, the crystallization-washing chamber are provided between the water tank and the crystallization-washing chamber
Cavity be provided with barrier ice crystal dividing plate, be connected with outer circulation loop between the shaving heat exchanger and the crystallization-washing chamber.
2. integral type solution freeze concentration equipment according to claim 1, it is characterized in that：The bottom of the shaving heat exchanger
Material box and product storage tank are connected with, the material box is connected by inlet valve with the bottom of the shaving heat exchanger, the production
Product storage tank is connected by blow-off valve with the shaving heat exchanger.
3. integral type solution freeze concentration equipment according to claim 2, it is characterized in that：The bottom of the shaving heat exchanger
Material mouth is offered, the material mouth is plugged with efferent duct, and the material box and the product storage tank are connected with the efferent duct.
4. integral type solution freeze concentration equipment according to claim 3, it is characterized in that：The outer circulation loop passes through company
The bottom that the efferent duct is connect with the shaving heat exchanger is connected.
5. integral type solution freeze concentration equipment according to claim 3, it is characterized in that：The bottom surface of the shaving heat exchanger
Inclined-plane is set to, the material mouth is opened in the end that the inclined-plane declines.
6. integral type solution freeze concentration equipment according to claim 1, it is characterized in that：The wall of the crystallization-washing chamber
Face is double-deck wall, is the air layer of heat-insulation and heat-preservation between the double-deck wall；
Wherein, the double-deck wall is optical clear bilayer wall.
7. integral type solution freeze concentration equipment according to claim 1, it is characterized in that：The rotating shaft is changed from the shaving
The bottom of hot device passes and is connected with the motor, and the motor is connected with speed regulator.
8. integral type solution freeze concentration equipment according to claim 1, it is characterized in that：The freezing of the shaving heat exchanger
Wall provides low-temperature receiver by the first refrigeration unit, and the water tank provides low-temperature receiver by the second refrigeration unit；
First, second refrigeration unit is vapor compression refrigeration unit or semiconductor refrigerating unit.
9. integral type solution freeze concentration equipment according to claim 1, it is characterized in that：The solution freezing equipment is also connected with
There is PLC, the PLC is provided with touch-screen display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940805.3U CN207187165U (en) | 2017-07-31 | 2017-07-31 | Integral type solution freeze concentration equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720940805.3U CN207187165U (en) | 2017-07-31 | 2017-07-31 | Integral type solution freeze concentration equipment |
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| CN207187165U true CN207187165U (en) | 2018-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107261545A (en) * | 2017-07-31 | 2017-10-20 | 东莞理工学院 | Integral type solution freeze concentration equipment and freezing and concentrating method |
| CN111418690A (en) * | 2020-05-19 | 2020-07-17 | 昆明凯澜创意科技有限公司 | Coffee stock solution concentrating device and production method of flash-dissolved reduced coffee |
-
2017
- 2017-07-31 CN CN201720940805.3U patent/CN207187165U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107261545A (en) * | 2017-07-31 | 2017-10-20 | 东莞理工学院 | Integral type solution freeze concentration equipment and freezing and concentrating method |
| CN107261545B (en) * | 2017-07-31 | 2023-10-31 | 东莞理工学院 | Integrated solution freeze concentration equipment and freeze concentration method |
| CN111418690A (en) * | 2020-05-19 | 2020-07-17 | 昆明凯澜创意科技有限公司 | Coffee stock solution concentrating device and production method of flash-dissolved reduced coffee |
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