CN101078595A - Spray drying machine - Google Patents
Spray drying machine Download PDFInfo
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- CN101078595A CN101078595A CN 200610026866 CN200610026866A CN101078595A CN 101078595 A CN101078595 A CN 101078595A CN 200610026866 CN200610026866 CN 200610026866 CN 200610026866 A CN200610026866 A CN 200610026866A CN 101078595 A CN101078595 A CN 101078595A
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- drying
- spray
- heating
- gas
- self
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- 238000001694 spray drying Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 82
- 238000010438 heat treatment Methods 0.000 claims abstract description 80
- 238000001035 drying Methods 0.000 claims abstract description 29
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 4
- 239000000839 emulsion Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000005204 segregation Methods 0.000 description 16
- 238000000926 separation method Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a spray drier, belonging to the spray drying technology field. Spray drying technology of self-heating dispersion drying room is adopted to conquer the disadvantage that it is provided with low heat efficiency, big equipment cubage, large total investment and polluting material easily so on when old spray drier adopts hot wind to heat. Steam generated by equipment drying material can also be used as heat source for other equipment. Under-drying material is dispersed into fine dispersing material flow groups and then said fine dispersing material flow groups and gas mixed with them are irradiated by radiation heating device so that dispersed material is heated and dried. It comprises material dispersing device (2), natural dispersing drying room (5), collecting and separating segment (9) connected with each other in turn. It can be applied in food, medicine, chemical industry, metallurgy and ceramic so on to dry liquid (solution, suspension liquid, emulsion and slurry) or under-drying solid powder directly so as to obtain powdered granulated product.
Description
Technical field
The present invention relates to the spray drying technology field, particularly adopt self-heating to disperse the spray drying process and the device of hothouse.
Background technology
Spray-drying is that feed liquid (solution, emulsion, suspension or slurry) is dispersed into vaporific droplet with atomizer, heats this vaporific drop with the energy again and makes it dry and a kind of dry run acquisition powder granular products.
Existing spray dryer can only be blown into hot blast by the outside because no self-heating disperses hothouse (not having electro-heat equipment in the dispersion hothouse), directly contacts with vaporific drop with hot blast, heats droplet with heat energy contained in the hot blast.Obtain hot blast and need pay great energy cost, the energy that generally heats hot blast is two times to three times of the dry required energy, and this has just caused very big energy waste.Secondly, the flow of the required hot blast steam flow that normally dry droplet produced ten to thirtyfold, certainly exist that equipment volume is huge, the granular material collection rate is low, heat energy is difficult for reclaiming, easy shortcoming such as polluted product.
Summary of the invention
The objective of the invention is to propose a kind of employing can provide the spray drying process and the spray-drying machine of the dispersion hothouse of dry heat energy (self-heating dispersion hothouse), eliminates the heating technique scheme of sending into outside hot blast.
Technical scheme of the present invention is such:
Technical scheme relates to following method:
The first step: the material dispersion, the material (solution, milkiness, suspension, slurries or not dried pressed powder) that is fit to disperse is sent into corresponding material dispersal device, disperse to discharge through the material dispersal device, form the mobile group of tiny not dried dispersed material:
Second step: drying, reach vapour (gas) body that mixes with it with the mobile group of the described not dried tiny dispersed material of heater heating, make not dried tiny dispersed material be subjected to heated drying, form the fluid-mixing with steam and other gas composition by the mobile group of the dispersed material of drying;
The 3rd step: collection material, get rid of gas, collect the tiny material powder of drying in the fluid-mixing, obtain goods, get rid of wherein steam and other gas, finish spray-drying process.
Technical scheme relates to following spray-drying machine:
This spray-drying machine disperses hothouse, collection segregation section to form its basic functions unit by material dispersal device, self-heating.The material dispersal device has not dry material inlet port and not dry material dispersion outlet; Self-heating disperses hothouse to have not dried dispersed material inlet port, its internal placement has the not dried dispersed material that enters the not dried dispersed material inlet port group of flowing can flow, be heated, be dried, flow out at last the working space of working space end therein, but and inner being provided be arranged near the working space heater of material in the heating work space: collect dispersed material that segregation section is provided with drying flow fluid-mixing inlet port, hopper, vapour (gas)-solid separation device and vapour (gas) the body outlet of group and vapour (gas) body.
The material dispersal device disperses hothouse to link to each other with self-heating, makes the not dry material of dispersal device disperse outlet to aim at or insert the not dried dispersed material inlet port that self-heating disperses hothouse; Self-heating disperses hothouse to link to each other with collection segregation section, makes self-heating disperse the end of hothouse working space to aim at or insert the dispersed material group of the drying of collecting segregation section and the fluid-mixing inlet port of vapour (gas) body.
The course of work: dry material is not sent into the not dry material inlet port of dispersal device, disperse via not dry material dispersion outlet discharge through dispersal device, entering self-heating disperses the working space of hothouse and flows to the end of working space, enter that self-heating disperses the working space of hothouse and under the heat effect of not dried dispersed material group that the end of working space flows at heater, the fluid-mixing that is heated, is dried, forms at last the dispersed material group of drying and vapour (gas) body flows out the end of working space, enters collection segregation section; Collecting in the segregation section, the part dispersed material directly falls into hopper, another part is intercepted and captured by vapour (gas)-solid separation device and is fallen into hopper at last, and the material powder that falls into hopper is collected as goods, and the vapour in the fluid-mixing (gas) body is then discharged via vapour (gas) body outlet.
The important difference of technical scheme of the present invention and known technology is: the present invention adopts self-heating to disperse hothouse, need not heat and dried material with the heat that hot blast is brought external heat source into, avoided bringing into the possibility of pollutant by the outside, working medium flow reduces tens of times, save intermediate medium and discharged the heat of being taken away, equipment volume can also reduce a lot, and save air blast, can save air-introduced machine, reduce the loss of material of separator, its discharge heat energy also can be used easily even can be used as the steam source of directly giving other equipment steam supplies.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 be of the present invention first the vertical throwing face of embodiment and A-A throw the structural map of face preferably.
Fig. 2 is second of the present invention, and the vertical throwing face of embodiment and A-A throw the structural map of face preferably.
Fig. 3 is the 3rd of the present invention, and the vertical throwing face of embodiment and A-A throw the structural map of face preferably.
Fig. 4 is the 4th of the present invention, and the vertical throwing face of embodiment and A-A throw the structural map of face preferably.
Fig. 5 is the 5th of the present invention, and the vertical throwing face of embodiment and A-A throw the structural map of face preferably.
Among the figure: 1. dry material inlet port not, 2. material dispersal device, 3. not dried dispersed material inlet port, 4. dry material does not disperse outlet, and 5. self-heating disperses hothouse, 6. heater, 7. working space, 8. the working space end is 9. collected segregation section, 10. the fluid-mixing inlet port of the dispersed material group of drying and vapour (gas) body, 11. hopper, 12. vapour (gas)-solid separation device, 13. vapour (gas) body outlet, 14. reflectings surface, 15. air-introduced machine, 16. the vacuum system pipeline, 17. heat-insulation layers, 18. continuous dischargers.
The specific embodiment
The preferred embodiments of specific implementation method of the present invention is as described in the following table:
| Step | The first step, material disperses | Second step, drying | In the 3rd step, collection material is discharged vapour (gas) body | ||||
| Parameter name | Material | Radiant heating device temperature ℃ | Absolute pressure KPa in the working space (7) | Evaporating temperature ℃ | Second drying time | Temperature fall time second | The separator type |
| Method one | Inorganic salt liquid | 800 | 90-200 | 96.7-120.2 | 0.9 | Cyclonic separation | |
| Method two | General organic liquor | 500 | 90-200 | 96.7-120.2 | 2 | Whirlwind adds pocket type | |
| Method three | The high-carbohydrate organic liquor | 800 | 2-50 | 17-81 | 2.7 | 1 | Pocket type |
| Method four | Heat sensitive material | 350 | 10Pa-3000Pa | -50-25 | 3 | 2 | Pocket type |
| Method five | Dry powder body material not | 500 | 90-200 | 96.7-120.2 | 0.7 | Whirlwind adds pocket type | |
| Method six | Organic ink | 500 | 90-200 | 96.7-120.2 | 1.8 | Whirlwind adds pocket type | |
| Method seven | Inorganic slurry | 800 | 100-200 | 100-120.2 | 0.7 | Other gas-solid separator | |
Concrete device for carrying out said of the present invention is as described below:
A kind of preferably selection of heater (4) is to adopt radiant heating device, can adopt electrothermal far infrared ray radiator and non-electric heat type radiator, its operating temperature is decided according to the type of radiator, chooses 120-1000 ℃ of degree scope, and the high more equipment volume of temperature is more little in principle.It is enough that the height dimension of the working space of atomization drying chamber (7) is wanted, make drop the landing and enter the cooling collection section just obtained enough dryings in the past, can be according to the drying time in the preferred embodiment table of specific implementation method, with dispersed material in the working space (7) the reference altitude size that group's the product of average flow velocity comes evaluation work space (7) that flows.
Material dispersal device (2) can be single fluid or non-single fluid liquid atomiser, slurry atomizer, pressed powder disperser etc., and a self-heating disperses hothouse to be connected with one or a non-material dispersal device.
The working space absolute pressure can be set up like this: when being operated in negative pressure state, vapour (gas) body outlet (13) can being linked to each other with air-introduced machine (15) or vacuum system pipeline (16) and set up required negative pressure; When being operated in barotropic state, the resistance of suitable vapour (gas)-solid separation device (12) can be set, just can obtain required malleation, also can in system, be blown into gas and set up required malleation.
Vapour (gas) solid separation device (12) can be known cyclone dust collectors, sack cleaner, membrane type gas-solid filter or other dedusters, also can be the combination of described dedusting, filter.
In first embodiment shown in Figure 1, material dispersal device (2) disperses hothouse (5) to link to each other with self-heating, make its not dry material disperse outlet (4) to insert in the not dried dispersed material inlet port (3) that self-heating disperses hothouse (5), disperse the vertical layout one in centre of hothouse (5) to disperse the working space (7) at the two ends up and down of hothouse (5) through self-heating at self-heating, in self-heating disperses hothouse (5), the outside of working space, near the vertical layout a plurality of radiant heating devices (6) of working space along working space, radiant heating device (6) can be electrothermal, steam heating type, flame heat or hot blast heated type, this example is an electrical heating type, but this routine radiant heating device includes the reflecting surface (14) that enhanced rad adds thermal effect, this routine reflecting surface can be arranged in self-heating to be disperseed between the outer surface and corresponding radiant heating device of hothouse (5), reflecting surface (14) can be plane or curved surface, this routine reflecting surface (14) contains the paraboloidal inner surface, reflecting surface (14) can vertically be arranged along radiant heating device (6), its focal line of reflecting surface (14) or focus are overlapped or near radiant heating device (6) with radiant heating device (6), enhanced rad adds thermal effect so greatly, collecting segregation section (9) disperses hothouse (5) to be connected with self-heating, make working space end (8) aim at the dispersed material group of the drying of collecting segregation section (9) and the fluid-mixing inlet port (10) of vapour (gas) body, hopper (11) is arranged in the below of fluid-mixing inlet port (10) of the dispersed material group of drying and vapour (gas) body and the below that hopper (11) is arranged in vapour (gas)-solid separation device (12), collects the hopper (11) of segregation section (9), vapour (gas)-solid separation device (12), vapour (gas) body outlet (13) links to each other successively.
In second embodiment shown in Figure 2, material dispersal device (2) disperses hothouse (5) to link to each other with self-heating, make its not dry material disperse outlet (4) to insert in the not dried dispersed material inlet port (3) that self-heating disperses hothouse (5), disperse the centre of hothouse (5) vertically to arrange-disperse the working space (7) at the two ends up and down of hothouse (5) at self-heating through self-heating, the outside at working space, near the vertical layout a plurality of radiant heating devices (6) of working space along working space, radiant heating device (6) can be electrothermal, steam heating type, flame heat or hot blast heated type, this example is a steam heating type, but this routine radiant heating device includes the reflecting surface (14) that enhanced rad adds thermal effect, this routine reflecting surface is arranged in self-heating to be disperseed between the outer surface and corresponding radiant heating device of hothouse (5), reflecting surface (14) can be plane or curved surface, this routine reflecting surface (14) contains ellipsoid shape inner surface, reflecting surface (14) can vertically be arranged along heater (6), reflecting surface (14) one focal line or focus are overlapped or near radiant heating device (6) with radiant heating device (6), the center line of its another focal line of reflecting surface (14) or focus and working space (7) or dispersed material are flowed, and the center line of colony overlaps or in its vicinity, enhanced rad adds thermal effect so greatly, collecting segregation section (9) disperses hothouse (5) to be connected with self-heating, make working space end (8) aim at the dispersed material group of the drying of collecting segregation section (9) and the fluid-mixing inlet port (10) of vapour (gas) body, hopper (11) is arranged in the below of fluid-mixing inlet port (10) of the dispersed material group of drying and vapour (gas) body and the below that hopper (11) is arranged in vapour (gas)-solid separation device (12), collects the hopper (11) of segregation section (9), vapour (gas)-solid separation device (12), vapour (gas) body outlet (13) links to each other successively.
In the 3rd embodiment shown in Figure 3, different is that air-introduced machine (15) links to each other with vapour (gas) body outlet (13), and radiant heating device (6) can be electrothermal, steam heating type, flame heat or hot blast heated type.Other structure is identical with first, second embodiment.
In the 4th embodiment shown in Figure 4, different is that vacuum system pipeline (16) links to each other with vapour (gas) body outlet (13), can make self-heating disperse hothouse (5) to be operated under the lower absolute pressure situation like this, to obtain low temperature or ultralow temperature or freezing and evaporating effect, radiant heating device (6) can be electrothermal, steam heating type, flame heat or hot blast heated type.Other structure is identical with first, second embodiment.
In the 5th embodiment shown in Figure 5, material dispersal device (2) disperses hothouse (5) to link to each other with self-heating, make its not dry material disperse outlet (4) to insert in the not dried dispersed material inlet port (3) that self-heating disperses hothouse (5), disperse the vertical layout one in centre of hothouse (5) to disperse the working space (7) at the two ends up and down of hothouse (5) through self-heating at self-heating, the outside at working space, near the vertical layout a plurality of radiant heating devices (6) of working space along working space, radiant heating device (6) can be electrothermal, steam heating type, flame heat or hot blast heated type, this example is the hot blast heated type, but this routine radiant heating device includes the reflecting surface (14) that enhanced rad adds thermal effect, this routine reflecting surface is arranged in self-heating to be disperseed between the outer surface and corresponding radiant heating device of hothouse (5), reflecting surface (14) can be plane or curved surface, this routine reflecting surface (14) contains ellipsoid shape inner surface, reflecting surface (14) can vertically be arranged along heater (6), reflecting surface (14) one focal line or focus are overlapped or near radiant heating device (6) with radiant heating device (6), the center line of its another focal line of reflecting surface (14) or focus and working space (7) or dispersed material are flowed, and the center line of colony overlaps or in its vicinity, enhanced rad adds thermal effect so greatly, collecting segregation section (9) disperses hothouse (5) to be connected with self-heating, make working space end (8) aim at the dispersed material group of the drying of collecting segregation section (9) and the fluid-mixing inlet port (10) of vapour (gas) body, hopper (11) is arranged in the below of the fluid-mixing inlet port (10) of the dispersed material group of drying and vapour (gas) body, vapour (gas)-solid separation device (12) of collecting segregation section (9) is arranged in the side of hopper (11) top, end at separator is furnished with vapour (gas) body outlet (13), self-heating disperses the outer surface of hothouse (5) to be surrounded by thermal insulation layer (17), can improve equipment thermal efficiency, self-heating disperses the latter end of hothouse (5) to be provided with the section of cooling that length is a (nothing adds the thermal effect section), is provided with the continuous discharger of goods (18) in the hopper (11) and can discharges goods continuously.
Claims (10)
1, a kind of spray drying process that has self-heating dispersion hothouse, it is characterized in that: reach vapour (gas) body that mixes with it with the mobile group of the described not dried tiny dispersed material of heater heating, make not dried tiny dispersed material be subjected to heated drying, concrete process is as follows:
The first step: the material dispersion, the material (solution, milkiness, suspension, slurries or not dried pressed powder) that is fit to disperse is sent into corresponding material dispersal device, disperse to discharge through the material dispersal device, form the mobile group of tiny not dried dispersed material;
Second step: drying, reach vapour (gas) body that mixes with it with the mobile group of the described not dried tiny dispersed material of heater heating, make not dried tiny dispersed material be subjected to heated drying, form the fluid-mixing with steam and other gas composition by the mobile group of the dispersed material of drying:
The 3rd step: collection material, get rid of gas, collect the tiny material powder of drying in the fluid-mixing, obtain goods, get rid of wherein steam and other gas, finish spray-drying process.
2, spray drying process according to claim 1, its further feature is: absolute pressure is in the working space (7): (2-50) kPa..
3, spray drying process according to claim 1, its further feature is: absolute pressure is in the working space (7): (10-3000) Pa.
4, a kind of spray-drying machine that has self-heating dispersion hothouse, it is characterized in that: device has self-heating and disperses hothouse.
5, spray-drying machine according to claim 4 is characterized in that: but self-heating disperses the dry indoor heater that is arranged in material near the heating work space of working space that is provided with.
6, spray-drying machine according to claim 4, it is characterized in that: heater is a radiant heating device.
7, spray-drying machine according to claim 4 is characterized in that: but radiant heating device includes the reflecting surface (14) that enhanced rad adds thermal effect.
8, spray-drying machine according to claim 4 is characterized in that: reflecting surface (14) contains the paraboloidal inner surface.
9, spray-drying machine according to claim 4 is characterized in that: reflecting surface (14) contains ellipsoid shape inner surface.
10, spray-drying machine according to claim 4 is characterized in that: vacuum system pipeline (16) links to each other with vapour (gas) body outlet (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026866 CN101078595A (en) | 2006-05-25 | 2006-05-25 | Spray drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026866 CN101078595A (en) | 2006-05-25 | 2006-05-25 | Spray drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101078595A true CN101078595A (en) | 2007-11-28 |
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ID=38906196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610026866 Pending CN101078595A (en) | 2006-05-25 | 2006-05-25 | Spray drying machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101078595A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183132A (en) * | 2011-03-09 | 2011-09-14 | 上海化工研究院 | Centrifugal spray drying device for catalysts for preparing olefins from formaldehyde |
| CN109077045A (en) * | 2018-09-17 | 2018-12-25 | 苏州极目机器人科技有限公司 | A kind of flusher with drop recycling function |
| CN109224486A (en) * | 2018-09-28 | 2019-01-18 | 朱玲琳 | A kind of heat pump spray drying system |
-
2006
- 2006-05-25 CN CN 200610026866 patent/CN101078595A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183132A (en) * | 2011-03-09 | 2011-09-14 | 上海化工研究院 | Centrifugal spray drying device for catalysts for preparing olefins from formaldehyde |
| CN109077045A (en) * | 2018-09-17 | 2018-12-25 | 苏州极目机器人科技有限公司 | A kind of flusher with drop recycling function |
| CN109077045B (en) * | 2018-09-17 | 2023-08-29 | 极目(海南)智能育种装备有限公司 | Spraying device with liquid drop recycling function |
| CN109224486A (en) * | 2018-09-28 | 2019-01-18 | 朱玲琳 | A kind of heat pump spray drying system |
| CN109224486B (en) * | 2018-09-28 | 2021-02-26 | 马鞍山纽泽科技服务有限公司 | Heat pump spray drying system |
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Application publication date: 20071128 |