CN102022902A - Spray drying equipment for low temperature drying - Google Patents
Spray drying equipment for low temperature drying Download PDFInfo
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- CN102022902A CN102022902A CN2009101835375A CN200910183537A CN102022902A CN 102022902 A CN102022902 A CN 102022902A CN 2009101835375 A CN2009101835375 A CN 2009101835375A CN 200910183537 A CN200910183537 A CN 200910183537A CN 102022902 A CN102022902 A CN 102022902A
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- porous plate
- drying
- feed liquid
- low temperature
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Abstract
The present invention provides a piece of spray drying equipment for low temperature drying, wherein the equipment can improve thermal efficiency, allows materials with biological activity to be dried at relatively low temperature, makes the granularity of powder products fine and uniform, and meanwhile enables to reduce the requirement on the performance of a nozzle and reduce the volume of the equipment. The technical scheme is that a porous plate and carrier particles are equipped at the bottom of a drying chamber, the porous plate is communicated with a hot air inlet and the carrier particles are disposed on the porous plate, allowing heat and mass transfer of feed liquid under the dual effect of hot air and hot carrier particles. An atomizing nozzle can be located at the lower middle part of the drying chamber and above the porous plate, and is connected with a conveyer pipe of the feed liquid, which allows the feed liquid to coat surfaces of the carrier particles and reinforces the drying process.
Description
Technical field
The present invention relates to a kind of drying device, is a kind of spray dryer, and it belongs to the drying equipment of mechanical industry, is applicable to the drying and the powder processing in fields such as biology, chemical industry, medicine, food, light industry.
Background technology
In the prior art time of spray dryer drying very short, cause the thermal efficiency not high; To requiring to keep bioactive material, its bearing temperature is very low, generally is no more than 80 ℃, and under low like this state of temperature, existing spray dryer can't be produced qualified products; Simultaneously, the effect that not broken grain is pulverized in its dry run, the particle size distribution of product is bigger, can not obtain the powder body material of uniform particle size; And when hot blast temperature was lower than 150 ℃, the device therefor volume was bigger.
Summary of the invention
Technical problem to be solved by this invention is to improve the thermal efficiency, makes the material of biologically active also can be dry at a lower temperature, and makes the granularity of powder product more even, reduces the performance requirement to nozzle simultaneously, and equipment volume is reduced.
It is in the bottom of hothouse porous plate and carrier particle to be set that the present invention addresses the above problem the technical scheme that is adopted, porous plate communicates with hot air inlet, carrier particle is placed on the porous plate, makes feed liquid finish heat and mass transfer process under the double action of hot blast and heat carrier particle.
The said atomizer of the present invention can be positioned at the middle and lower part of hothouse, the top of porous plate, is connected with the feed liquid carrier pipe on atomizer, makes that feed liquid can be to the coating of carrier particle surface, intensified drying process.
Effect of the present invention is that 1 thermal efficiency is higher: the drying of material is to finish heat and mass transfer process under the double action of hot blast and heat carrier particle; 2 can dry biologically active material: because the raising of the thermal efficiency can be finished dry run under lower temperature, the temperature that material bore very low (even can below 50 ℃), thereby guarantee that biological activity is not destroyed; The particle of 3 gained powder products is more even: owing to invest the material on carrier particle surface, clash into mutually at carrier particle, come off under the rubbing action, carry out selection by winnowing again simultaneously, so have only less material to be taken out of hothouse; The performance requirement of 4 pairs of nozzles is lower: because the drying of material and fragmentation are mainly leaned on the effect of carrier particle, the effect of nozzle just is applied to feed liquid the surface of carrier particle, so use the atomizer of various principles can both obtain drying effect preferably; 5 equipment volume are less: owing to the air quantity that the carrier particle atomization drying is required is less, the thermal efficiency is higher simultaneously, so dwindled the volume of equipment.
Description of drawings
Fig. 1 is the structural representation of existing spray dryer.
Fig. 2 is a structural representation of the present invention.
The specific embodiment
Referring to Fig. 2, the present invention mainly is made up of hothouse 4, porous plate 11, carrier particle 16, atomizer 15 and hot-air inlet pipe 12, and amplify by a certain percentage than the bottom on hothouse 4 tops; Porous plate 11 is arranged at the bottom of hothouse 4, and it communicates with hot air inlet 12.1; Carrier particle 16 is placed on the porous plate 11, the round particle that this carrier particle 16 can select for use materials such as glass, pottery, polytetrafluoroethylene (PTFE) and aluminium oxide to make; Atomizer 15 can be positioned at the middle and lower part of hothouse 4, the top of porous plate 11, is connected with feed liquid carrier pipe 13 on atomizer 15, also can be connected with compressed air hose 14 as required, and the other end of feed liquid carrier pipe 13 is connected with infusion pump etc.; One end of hot-air inlet pipe 12 links to each other with the bottom hot air inlet 12.1 of hothouse 4, and the other end is connected with heating system by pipeline.
During use, hot blast enters hot air inlet 12-1 by hot-air inlet pipe 12, enter the zone at carrier particle 16 places through porous plate 11, carrier particle 16 is blown afloat and suspends into the form of similar liquid state, and feed liquid is delivered to atomizer 15 through feed liquid carrier pipe 13, be sprayed at carrier particle 16 surfaces after the atomizing, under the double action of hot blast and carrier particle 16, finish heat and mass transfer process.After investing the dry materials on carrier particle 16 surfaces, clash into mutually, rub and come off through carrier particle 16, form tiny and uniform granular material, by airduct by the hot blast band from hothouse 4, reclaim granular material through settling section 18 and separator 6, big slightly material then can continue to stay hothouse 4 and carry out fragmentation, up to obtaining thin powder product uniformly.
Whole dry run of the present invention can be finished continuously, is fit to automated production.
In the present embodiment, feed liquid can be by one or more atomizers 15 to carrier particle 16 surface coatings.Multiple modes such as atomizer 15 available pressure formulas or air-flowing type atomize.Atomizer 15 can be sprayed onto on the carrier particle 16 from bottom to top, also can be sprayed onto from top to bottom on the carrier particle 16 in the carrier particle district.When atomizer 15 was sprayed onto on the carrier particle in the carrier particle district from bottom to top, the liquid stream or the air-flow of atomizer 15 ejections also had impetus to carrier particle 16, more help the suspension of carrier particle 16, and can intensified drying process.
Claims (2)
1. spray drying device that is used for low temperature drying, it is characterized in that: be provided with porous plate (11) and carrier particle (16) in the bottom of hothouse (4), porous plate (11) communicates with hot air inlet (12-1), and carrier particle (16) is placed on the porous plate (11).
2. a kind of spray drying device that is used for low temperature drying according to claim 1, it is characterized in that: set atomizer (15) can be positioned at the middle and lower part of hothouse (4), the top of porous plate (11), is connected with feed liquid carrier pipe (13) on atomizer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101835375A CN102022902A (en) | 2009-09-23 | 2009-09-23 | Spray drying equipment for low temperature drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101835375A CN102022902A (en) | 2009-09-23 | 2009-09-23 | Spray drying equipment for low temperature drying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022902A true CN102022902A (en) | 2011-04-20 |
Family
ID=43864494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101835375A Pending CN102022902A (en) | 2009-09-23 | 2009-09-23 | Spray drying equipment for low temperature drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022902A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497887A (en) * | 2013-09-24 | 2014-01-08 | 扬州大学 | Multi-atomization thermosensitive dehydrator |
| CN103743215A (en) * | 2014-01-17 | 2014-04-23 | 北京旭日清风科技有限公司 | Moisture-containing solid material drying device using carrying balls to assist in drying and drying method |
| CN105829818A (en) * | 2013-10-24 | 2016-08-03 | 斯必克流体技术丹麦公司 | Gas distributer for a convective dryer having improved radial gas velocity control |
| CN105833970A (en) * | 2016-06-02 | 2016-08-10 | 中国科学院过程工程研究所 | Sticky solid waste treatment device and treatment method and use thereof |
| CN106016973B (en) * | 2016-07-11 | 2018-12-04 | 成都中牧生物药业有限公司 | Air-blast atomization feed spray drier |
-
2009
- 2009-09-23 CN CN2009101835375A patent/CN102022902A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497887A (en) * | 2013-09-24 | 2014-01-08 | 扬州大学 | Multi-atomization thermosensitive dehydrator |
| CN105829818A (en) * | 2013-10-24 | 2016-08-03 | 斯必克流体技术丹麦公司 | Gas distributer for a convective dryer having improved radial gas velocity control |
| CN103743215A (en) * | 2014-01-17 | 2014-04-23 | 北京旭日清风科技有限公司 | Moisture-containing solid material drying device using carrying balls to assist in drying and drying method |
| CN103743215B (en) * | 2014-01-17 | 2019-11-08 | 北京旭日清风科技有限公司 | It is a kind of to assist dry water-bearing solid material drying device and drying means using ball is carried |
| CN105833970A (en) * | 2016-06-02 | 2016-08-10 | 中国科学院过程工程研究所 | Sticky solid waste treatment device and treatment method and use thereof |
| CN105833970B (en) * | 2016-06-02 | 2018-11-09 | 中国科学院过程工程研究所 | A kind of viscous solid waste treatment apparatus and its processing method and purposes |
| CN106016973B (en) * | 2016-07-11 | 2018-12-04 | 成都中牧生物药业有限公司 | Air-blast atomization feed spray drier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Huiliang Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |