CN201621934U - Freez concentration spraying freeze-drying device, - Google Patents
Freez concentration spraying freeze-drying device, Download PDFInfo
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- CN201621934U CN201621934U CN 201020130987 CN201020130987U CN201621934U CN 201621934 U CN201621934 U CN 201621934U CN 201020130987 CN201020130987 CN 201020130987 CN 201020130987 U CN201020130987 U CN 201020130987U CN 201621934 U CN201621934 U CN 201621934U
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- freeze
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- fluid bed
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Abstract
The utility model relates to a freeze concentration spraying freeze-drying device, which is a device integrates freeze concentration, spray freezing granulation, atmospheric freeze-drying of fluidized beds together, and has the advantages of energy conservation, high efficiency, high quality of products, and short drying time and the like. The structure of the freeze concentration spraying freeze-drying device comprises a feed liquid storage device which is connected with a freeze concentration device, a material outlet end of the freeze concentration device is connected with a spray freezing tower, and a waste liquid end is connected with a water cooling box. The spray freezing tower is connected with a fluidized bed, the fluidized bed is connected with a dust collector, and the material outlet ends of the fluidized bed and the dust collector are connected with a finished product area. The dust collector is connected with an air feeding device, the air feeding device is connected with a cooling device, the cooling device is respectively connected with the spray freezing tower and a heat exchange device, and the heat exchange device is connected with the fluidized bed through a heating device. Multi-stage hot pump systems which are mutually connected are arranged in a water cooling box, the heat exchange device and the cooling device.
Description
Technical field
The utility model belongs to process equipment technology field, relates in particular to a kind of freezing concentration, spray freeze drying plant, and this method is mainly used in the dehydration granulation of high value added products such as food, biological products, medicine.
Technical background
Freeze concentration is a kind of rapidly concentrated mode of development in recent years, owing under low-temperature atmosphere-pressure, operate, have advantages such as can stop adverse chemical to change and biochemistry variation and local flavor, fragrance and nutritive loss be little, and be specially adapted to concentrate the high-grade drink of thermal sensitivity food liquid, bio-pharmaceuticals, requirement reservation natural colour fragrance and traditional Chinese herbal decoction etc.Therefore, this low energy consumption of freeze concentration, the process technology that can produce high-quality product have huge development potentiality.The freeze concentration system that adopts on the industrial production is made up of ice-nucleus maker, crystallizer and ice crystal separator at present.Be concentrated liquid and at first in the ice-nucleus maker, generate the cryogenic fluid that contains many tiny ice crystals, then deliver in the crystallizer and grow up to big ice crystal by Ostwald (Ostwald) effect, concentrate is sent from the crystallizer bottom, the concentrate that ice crystal surface adheres to water flushing in the ice crystal separator is reclaimed, and flushing liquor is sent feed end again back to.In this system, key technology is how to make ice crystal long to enough separating ice crystal and solute greatly and effectively in crystallizer.This patent utility model adopts with the mode of foreign study institution cooperation and develops the freezing fluidized bed drying technology of freezing concentration, spray jointly, use foreign patent, the patent No.: 566338(New Zealand), this Freeze Concentration Technology is different from existing commercial technology on the market, this device can be finished the freeze concentration process in a container, do not need the ice slurry of freezing generation is shifted between different vessels, evidence simultaneously has lower energy consumption.
The spray chilling technology is to utilize the solution mist after atomising device will concentrate to change into tiny drop, drop is rapidly frozen into fine particle in the cryogenic freezing medium, because cooling time is generally tens microsecond clocks, chilling rate is fast, easily form the small size ice crystal, can reduce effectively the cell of biological products and the destruction of other functional structures, and can form stable Solid State Structure fast, guarantee the micropore structure of original product, preserve the physicochemical property of existing product to greatest extent.
Atmospheric freeze drying is operated under normal pressure, and the product quality that is dried to is better than conventional heated-air drying near vacuum freeze drying, has higher rehydration speed, less shrinkage factor.Vacuum Freezing ﹠ Drying Technology is to be frozen into material solid-state at a lower temperature, under vacuum, make moisture wherein be directly sublimed into gaseous state then without liquid state, finally make the dry technology of material dewatering, it is the food liquid that product quality is had relatively high expectations, the dry technology of institute's wide selection is preserved in medicine and biological products dehydration, the liquid material that normally will be dried is put into flask, in the containers such as pallet, the hothouse of putting into vacuum freeze drier carries out freezing, in hothouse, be provided at the required heat of water sublimed under the vacuum condition then by heat exchange pattern, with moisture sublimation separation from freezing material, steam become trapped in the condenser surface of the vacuum pumping system that is communicated with hothouse.Because material is first through freezing before the distillation dehydration, form stable solid skeletal, the dried product of resulting loose structure has very high voidage, shrinks little, original form is kept, and does not have case-hardened phenomenon and has desirable instant capacity and fast rehydrating; Vacuum, cryogenic conditions be work down, has reduced to greatest extent because the reduction of the physical and chemical index that oxidation brought, such as enzymatic browning etc.
At present, domestic do not have freezing fluidized bed drying Study on Technology of the freezing granulation normal pressure of freezing concentration, spray and patent to occur as yet.Though proposition is arranged with concentrate cryospray dry technology patent abroad, does not have similar integrated system; As mentioning in the US6862890 patent liquid directly is sprayed to freeze drying in the cryogenic liquid, does not have total energy approach and combination drying technology.
The utility model content
The purpose of this utility model is exactly for solving the drying-granulating work of low concentration solution, a kind of collection freeze concentration, spray chilling granulation, the cryodesiccated freezing concentration, spray freeze drying plant of fluidized-bed normal pressure are provided, has efficient energy-saving, product quality height, advantage such as drying time is short.
For achieving the above object, the utility model adopts following technical scheme:
A kind of freezing concentration, spray freeze drying plant, it comprises the feed liquid storage device, and the feed liquid storage device is connected with the freeze concentration device, and the discharge end of freeze concentration device is connected with the spray chilling tower, and the waste liquid end is connected with the water-cooled case; The spray chilling tower is connected with fluid bed, and fluid bed is connected with deduster, and the discharge end of fluid bed and deduster is connected into the product district; Deduster is connected with air-supply arrangement; Air-supply arrangement is connected with cooling device, and cooling device is connected with heat-exchanger rig with the spray chilling tower respectively, and heat-exchanger rig is connected with fluid bed by heater; In water-cooled case, heat-exchanger rig and cooling device, be provided with interconnective multi-stage heat pump system.
Described multi-stage heat pump system comprises three grades of heat pumps, and wherein the one-level heat pump is connected with the water-cooled case; The secondary heat pump is connected with heat-exchanger rig; Three grades of heat pump cooling devices connect.
Be connected by feed pump I between described feed liquid storage device and freeze concentration device; Be connected by feed pump II between freeze concentration device and spray chilling tower.
The temperature of the spray chilling granulation of described spray chilling tower is at-40～-60 ℃.
The freeze drying temperature of described fluid bed below the solution eutectic point 2～3 ℃.
Described heat-exchanger rig is an air heat exchanger; Described cooling device is an aerial cooler; Described heater is an electric heater.
Adopt the freeze drying process of freezing concentration, spray freeze drying plant, its step is:
Step 1 is opened freezing enrichment facility, and feed liquid is sent into the freeze concentration device, finishes the freeze concentration process in setting-up time, and feed liquid is separated into highly concentrated solution and waste water, and the solid content of highly concentrated solution is no more than 40%; Solution is sent into the spray chilling tower, and waste water is sent into the water-cooled case, and the water-cooled case is provided with the one-level heat pump; The water-cooled case is as the low-temperature receiver of secondary heat pump and the thermal source of one-level heat pump;
Step 2, after the work of freeze concentration device 1 hour, open one-level heat pump, secondary heat pump and three grades of heat pumps, the temperature of whole system is reduced to the system works temperature;
Step 3, the solution after concentrating is sent into the spray chilling tower, carries out freezing granulation; Enter fluid bed through the frozen particle after the granulation of spray chilling tower and carry out atmospheric freeze drying;
Step 4, the part dried particles is fluidized cold wind and takes fluid bed out of, and the particle that cold wind is taken away comes out particle separation through the filtration of deduster, discharges with the finished product that is used as together of the dried material of fluid bed; The tail gas of deduster then utilizes once more by after handling.
In the described step 3, dry run is: feed liquid enters the spray chilling module and carries out the spray chilling granulation, and the temperature of spray chilling granulation is controlled at-40～-60 ℃, and under low-temperature condition, spraying produces particle moment is frozen; Last frozen particle is transported in the fluid bed together with freezing air-flow, enters fluid bed, and cryodesiccated temperature is controlled at following 2～3 ℃ of solution eutectic point, finishes dry run; Have the operation of different temperatures in whole system, each module Btu utilization is connected by three grades of heat pumps, to reach the effect of total energy approach.
Described freeze drying temperature is at-10～-20 ℃.
In the described step 4, the tail gas that deduster is discharged utilizes process to be again: cold air is sent into air cold air device by blower fan and air is cooled to-40～-60 ℃, and the moisture in the humid air is removed; Gas is divided into two strands then, one gas provides cold used as spray chilling, the gas that another strand uses as the fluid bed fluidisation, this one air enters in the air heat exchanger, here be the condenser end of three grades of heat pumps, three grades of heat pumps with the transfer of heat in the aerial cooler to air heat exchanger, too high for preventing the heated temperature of air simultaneously, by the secondary heat pump, transfer of heat unnecessary in the air heat exchanger is gone out, and the temperature of regulating fluidizing gas by electric heater when being lower than-20 ℃ in ambient temperature, the gas temperature that guarantees to enter fluid bed below the solution eutectic point 2～3 ℃; The frozen air of the fluidizing gas of process fluid bed and spray chilling tower enters deduster together and finishes circulation at last.
Its course of work of the utility model is that low-concentration liquid enters the freeze concentration device, and low-concentration liquid is concentrated into suitable concentration, generally can not surpass 40% solid content; Enter the spray chilling module then and carry out the spray chilling granulation, the temperature of spray chilling granulation is controlled at-40～-60 ℃, and under low-temperature condition, the particle that spraying produces can be frozen moment, and cooling time is tens of milliseconds; Last frozen particle is transported in the fluid bed together with the special excessively device of freezing air communication, enter fluid bed freeze drying module, cryodesiccated temperature is controlled at following 2～3 ℃ of solution eutectic point, promptly generally at-10～-20 ℃, finish dry run, the material that the material after drying is finished is collected together with deduster is discharged through discharge valve.Have the operation of different temperatures in whole system, each module Btu utilization is connected by the multi-stage heat pump system, to reach the effect of total energy approach.
Freeze concentration device of the present utility model has following advantage:
(1) can continued operation;
(2) the highest solution concentration to solid content can be reached 55%(be benchmark with the pol);
(3) remove solid content in the freezing ice less than 50ppm, what ice crystal melted that the back produces is pure water substantially;
(4) wastewater temperature of Pai Chuing is about 0 ℃, and the low-temperature receiver that can be used as other equipment uses.
Through the freeze concentration process, the large quantity of moisture in the low concentration solution is removed: suppose that original solution concentration is 5%, become 40% through the concentration after concentrating, then wherein 87.5% moisture is separated, and has significantly reduced the quality of solution, has reduced drying cost.
This freeze concentration, spray chilling granulation, fluidized-bed normal pressure freeze-drying method have the following advantages:
1, system integration degree height; The system of this method has solved a whole set of technology from low concentration solution to dry powder process granulation, integrated finishing.
2, cold nebulization freeze drying, can reduce the cell of biological products and the destruction of other functional structures, guarantee the original product micropore structure, preserve the physicochemical property of existing product to greatest extent, reduce the quality degradation that conventional cryogenic freezing causes, the product quality quality is higher.
3, in normal pressure fluidization (common fluid bed or pulsating fluidized bed) freeze drying, the product particle mixed distribution is even, the mobile height of product, and size distribution can be regulated.
4, capacity usage ratio height.In the system at the required different temperatures adjusted design of different links 3 heat pump circulating systems, energy is fully used.
5, realize freeze concentration, cryospray granulation and fluidized bed drying, system is a closed-loop operation, moves environmentally safe continuously.
6, adaptability is strong.Native system can simply be regulated and can work under different ambient temperature conditions by automatic control system at hot conditions (summer) and the following complete operation of cryogenic conditions (winter).
Description of drawings
Fig. 1 is the schematic diagram of the utility model freeze concentration, spray chilling granulation, fluidized-bed normal pressure freeze drying plant system.
Wherein, 1, material pot; 2, feed pump I; 3, the freeze concentration device; 4, feed pump II; 5, the spray chilling tower; 6, fluid bed; 7, deduster; 8, electric heater; 9, the one-level heat pump; 10, the water-cooled case; 11, the secondary heat pump; 12, air heat exchanger; 13, three grades of heat pumps; 14, aerial cooler; 15, blower fan.
The specific embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Among Fig. 1, it comprises that the feed liquid storage device is a material pot 1, and material pot 1 is sent into freeze concentration device 3 by feed pump I2, and freeze concentration device 3 is connected with spray chilling tower 5 through feed pump II4; Spray chilling tower 5 is connected with fluid bed 6, fluid bed 6 is connected with deduster 7, the tail gas of deduster 7 is sent into aerial cooler 14 through blower fan 15, and cooler 14 is connected with air heat exchanger 12 with spray chilling tower 5 respectively, and air heat exchanger 12 is connected with fluid bed 6 through electric heater 8.Freeze concentration device 3 is connected with water-cooled case 10.Be connected with one-level heat pump 9 at water-cooled case 10, air heat exchanger 12 is connected with secondary heat pump 11, and aerial cooler 14 is connected with three grades of heat pumps 13.Be connected to each other between heat pumps at different levels.
Processing step of the present utility model is:
Step 1 is opened freezing enrichment facility, and feed liquid is sent into the freeze concentration device, finishes the freeze concentration process in setting-up time, and feed liquid is separated into highly concentrated solution and waste water, and the solid content of highly concentrated solution is no more than 40%; Solution is sent into the spray chilling tower, and waste water is sent into the water-cooled case, and the water-cooled case is provided with the one-level heat pump, and the water temperature that one-level heat pump 9 is set is in the water-cooled case 10 is too high, so that influences the operate as normal of secondary heat pump; The water-cooled case is used for the low-temperature receiver of secondary heat pump and the thermal source of one-level heat pump;
Step 2, after the work of freeze concentration device 1 hour, open one-level heat pump, secondary heat pump and three grades of heat pumps, the temperature of whole system is reduced to the system works temperature;
Step 3, the solution after concentrating is sent into the spray chilling tower, carries out freezing granulation; Enter fluid bed through the frozen particle after the granulation of spray chilling tower and carry out atmospheric freeze drying; Dry run is: feed liquid enters the spray chilling module and carries out the spray chilling granulation, and the temperature of spray chilling granulation is controlled at-40～-60 ℃, and under low-temperature condition, spraying produces particle moment is frozen; Last frozen particle is transported in the fluid bed together with freezing air-flow, enters fluid bed, and cryodesiccated temperature is controlled at following 2～3 ℃ of solution eutectic point, finishes dry run; Have the operation of different temperatures in whole system, each module Btu utilization is connected by three grades of heat pumps, to reach the effect of total energy approach.Wherein, freeze drying temperature is at-10～-20 ℃.
Step 4, the part dried particles is fluidized cold wind and takes fluid bed out of, and the particle that cold wind is taken away comes out particle separation through the filtration of deduster, discharges through discharge valve with the finished product that is used as together of the dried material of fluid bed; The tail gas of deduster then utilizes once more by after handling.Have the operation of different temperatures in whole system, each module Btu utilization is connected by the multi-stage heat pump system, to reach the effect of total energy approach.
The tail gas that deduster is discharged utilizes process to be again: cold air is sent into air cold air device by blower fan and air is cooled to-40～-60 ℃, and the moisture in the humid air is removed; Gas is divided into two strands then, one gas provides cold used as spray chilling, the gas that another strand uses as the fluid bed fluidisation, this one air enters in the air heat exchanger, here be the condenser end of three grades of heat pumps, three grades of heat pumps with the transfer of heat in the aerial cooler to air heat exchanger, too high for preventing the heated temperature of air simultaneously, by the secondary heat pump, transfer of heat unnecessary in the air heat exchanger is gone out, and the temperature of regulating fluidizing gas by electric heater when being lower than-20 ℃ in ambient temperature, the gas temperature that guarantees to enter fluid bed below the solution eutectic point 2～3 ℃; The frozen air of the fluidizing gas of process fluid bed and spray chilling tower enters deduster together and finishes circulation at last.
Seasonal adaptation:
In the winter of cold, ambient temperature is lower, then might not need to open one-level heat pump 9, and secondary heat pump 11 also may not need to a lot of heat of external world's carrying, even just do not need work at some ground region two-stage heat pumps 11, for the wet ability of the appearance that guarantees fluidization air then needs the heats cold air, at this moment opening electric heater 8 just can work on so; And, then do not need the work of electric heater 8 in temperature higher summer, and use one-level heat pump 9, secondary heat pump 11 and three grades of heat pumps 13 to work.
Claims (6)
1. a freezing concentration, spray freeze drying plant is characterized in that, it comprises the feed liquid storage device, and the feed liquid storage device is connected with the freeze concentration device, and the discharge end of freeze concentration device is connected with the spray chilling tower, and the waste liquid end is connected with the water-cooled case; The spray chilling tower is connected with fluid bed, and fluid bed is connected with deduster, and the discharge end of fluid bed and deduster is connected into the product district; Deduster is connected with air-supply arrangement; Air-supply arrangement is connected with cooling device, and cooling device is connected with heat-exchanger rig with the spray chilling tower respectively, and heat-exchanger rig is connected with fluid bed by heater; In water-cooled case, heat-exchanger rig and cooling device, be provided with interconnective multi-stage heat pump system.
2. freezing concentration, spray freeze drying plant as claimed in claim 1 is characterized in that, described multi-stage heat pump system comprises three grades of heat pumps, and wherein the one-level heat pump is connected with the water-cooled case; The secondary heat pump is connected with heat-exchanger rig; Three grades of heat pump cooling devices connect.
3. freezing concentration, spray freeze drying plant as claimed in claim 1 is characterized in that, is connected by feed pump I between described feed liquid storage device and freeze concentration device; Be connected by feed pump II between freeze concentration device and the spray chilling tower.
4. freezing concentration, spray freeze drying plant as claimed in claim 1 is characterized in that, the temperature of the spray chilling granulation of described spray chilling tower is at-40～-60 ℃.
5. freezing concentration, spray freeze drying plant as claimed in claim 1 is characterized in that, the freeze drying temperature of described fluid bed below the solution eutectic point 2～3 ℃.
6. freezing concentration, spray freeze drying plant as claimed in claim 1 or 2 is characterized in that, described heat-exchanger rig is an air heat exchanger; Described cooling device is an aerial cooler; Described heater is an electric heater.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020130987 CN201621934U (en) | 2010-03-15 | 2010-03-15 | Freez concentration spraying freeze-drying device, |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020130987 CN201621934U (en) | 2010-03-15 | 2010-03-15 | Freez concentration spraying freeze-drying device, |
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| CN201621934U true CN201621934U (en) | 2010-11-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745345A (en) * | 2010-03-15 | 2010-06-23 | 山东天力干燥设备有限公司 | Freezing concentration, spray freezing and drying device and process |
| CN103322771A (en) * | 2013-05-20 | 2013-09-25 | 马鞍山市益江高温陶瓷制造有限公司 | Hot wind ventilating and drying techniques for granulation feed cabin |
| CN104351171A (en) * | 2014-11-05 | 2015-02-18 | 朱忠良 | Plant leaf flour-milling freezing-drying process |
| CN104401984A (en) * | 2014-11-20 | 2015-03-11 | 东南大学 | Millimeter-sized grapheme ball and large-scale preparation method thereof |
| CN105558950A (en) * | 2016-01-26 | 2016-05-11 | 吉林大学 | Method for preparing potato raw whole-flour |
| CN109052777A (en) * | 2018-08-16 | 2018-12-21 | 东莞市珠江海咸水淡化研究所 | A kind of industrial wastewater spray chilling processing system and application |
| CN111207564A (en) * | 2019-09-30 | 2020-05-29 | 中国科学院上海硅酸盐研究所 | Freeze drying system and method |
-
2010
- 2010-03-15 CN CN 201020130987 patent/CN201621934U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745345A (en) * | 2010-03-15 | 2010-06-23 | 山东天力干燥设备有限公司 | Freezing concentration, spray freezing and drying device and process |
| CN103322771A (en) * | 2013-05-20 | 2013-09-25 | 马鞍山市益江高温陶瓷制造有限公司 | Hot wind ventilating and drying techniques for granulation feed cabin |
| CN104351171A (en) * | 2014-11-05 | 2015-02-18 | 朱忠良 | Plant leaf flour-milling freezing-drying process |
| CN104401984A (en) * | 2014-11-20 | 2015-03-11 | 东南大学 | Millimeter-sized grapheme ball and large-scale preparation method thereof |
| CN105558950A (en) * | 2016-01-26 | 2016-05-11 | 吉林大学 | Method for preparing potato raw whole-flour |
| CN105558950B (en) * | 2016-01-26 | 2019-05-17 | 吉林大学 | A method of preparing potato starch |
| CN109052777A (en) * | 2018-08-16 | 2018-12-21 | 东莞市珠江海咸水淡化研究所 | A kind of industrial wastewater spray chilling processing system and application |
| CN109052777B (en) * | 2018-08-16 | 2023-07-18 | 东莞市珠江海咸水淡化研究所 | Industrial wastewater spray freezing treatment system and application |
| CN111207564A (en) * | 2019-09-30 | 2020-05-29 | 中国科学院上海硅酸盐研究所 | Freeze drying system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG TIANLI DRYING CO., LTD. Free format text: FORMER NAME: TIANLI DRYING EQUIPMENT CO., LTD., SHANDONG |
|
| CP03 | Change of name, title or address |
Address after: 250101, Shandong Province, Ji'nan hi tech Zone, No. 554 Feng Feng Road, environmental science and Technology Park, building 8, Feng Feng building, room 230 Patentee after: Shandong Tianli Drying Co., Ltd. Address before: Three Cun Cai Shi Zhen Xi Cai Shi Licheng District 250103 Shandong city of Ji'nan province No. 403 Patentee before: Tianli Drying Equipment Co., Ltd., Shandong |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101103 Effective date of abandoning: 20110921 |