CN85200130U - Apparatus for making dry powder with fluidized-bed - Google Patents
Apparatus for making dry powder with fluidized-bed Download PDFInfo
- Publication number
- CN85200130U CN85200130U CN 85200130 CN85200130U CN85200130U CN 85200130 U CN85200130 U CN 85200130U CN 85200130 CN85200130 CN 85200130 CN 85200130 U CN85200130 U CN 85200130U CN 85200130 U CN85200130 U CN 85200130U
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- CN
- China
- Prior art keywords
- housing
- inert carrier
- fluid bed
- dispersion plate
- fluidized bed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an apparatus for making dry powder with a fluidized bed, which sprays the original liquid, namely solution, suspension liquid or paste form serous fluid into the fluidized bed with an inert support. Films are formed on the surface of the inert support, namely a ceramic ball, and the films can be dried quickly by controlling the speed and the temperature of the air-stream in the fluidized bed, thus obtaining qualified dry powder productions. The utility model has the characteristics of simple structure, compact structure, and easy operation. The heat efficiency of the utility model can reach 70 percent, and the volume of the apparatus for making dry power with a fluidized bed decreases 11 to 23 times compared with the existing spray drying apparatus. The apparatus for making dry power with a fluidized bed can be used for chemistry, medicine and food industry.
Description
The present invention is with material liquid---solution.Suspension or paste slurries---in fluid bed, carry out dry tack free.And obtains the device of power-product.The invention belongs to technical field of drying.
In the prior art, with the device of the dry powder process of material liquid with spray-drying use the most extensive, dry tenacity is low but it has volume, the shortcoming that drying equipment is huge.Another kind of prior art with the dry fuel pulverizing plant of material liquid, for example 3.938, No. 259 patents of the U.S. are exactly a typical example.The core of this apparatus system is the fluidized drying device, and it is by housing, inert carrier---quartz sand, dispersion plate, material liquid conveyer---screw feeder and mechanical agitation system form.Hot-air blows heap 0.5-1.0 millimeter quartz sand thereon through dispersion plate.The ratio K of control apparent fluidizing velocity of air-flow and critical fludization velocity is less than 1.5, formed gas-solid fluidized bed, material liquid is sent in the fluid bed with screw feeder, this will make the quartz sand that scribbles material liquid on the surface that stronger bonding trend is arranged to each other, thereby can destroy the normal fluidized state of quartz sand, so this patent is provided with mechanical agitator in fluid bed, the power transmission shaft of agitator will pass the dispersion plate that bears hot air temperature and the high temperature bottom surface of housing.And is dragged through reduction box by motor.Owing to be provided with the mechanical agitation system, make the apparatus structure complexity of this patent; The friction of fierceness makes blade wear serious between the quartz sand under mixing arm and the fluidized state; The power transmission shaft of under hot gas temperature, working, bearing and sealing device, not only make complicated in mechanical structure, and limited the raising of hot gas temperature, hot gas temperature in this patent under the dispersion plate does not allow to surpass 90 ℃ of these material powder that just caused obtaining in fluid bed comparatively moist, its humidity is lower than 0.5% power-product up to 2-5% in order to obtain humidity, this patent additional again for the second time with drying step more for the third time, thereby make the apparatus structure of this patent and operation more become complicated; Because hot gas temperature does not allow to surpass under 90 ℃ the cryogenic conditions, it is low to make the device of this patent have the thermal efficiency, only has 50%, the shortcoming that the volume dry tenacity is low.The housing volume of its fluidized drying device is suitable with spray-dired housing volume.
The objective of the invention is to improve at the shortcoming that said apparatus exists.Design small volume structure and simply install, to reach economical, the material liquid time processing to be become the purpose of power-product efficiently.
Jie of the present invention determines scheme as shown in drawings, air is through blower fan (1), heating furnace (2), hot-air passes the dispersion plate that percent opening is 5-20% (3) from housing (4) bottom, under the apparent fluidizing velocity of higher air-flow, make inert carrier (6)---the porcelain ball that is deposited on the dispersion plate, in housing, present fierce fluidized state, material liquid is delivered to the nozzle place of exterior mixing sprayer (5) through raw material liquid pump (12), for with air-atomized pneumatic nebulizer, air send exterior mixing sprayer (5) through air compressor machine (13), with spraying in the concentrated phase area of fluid bed (14) after the material liquid atomizing, on porcelain ball surface, be coated with last layer material film more equably.In fluid bed, hot gas makes the rapid dry ， And of material film be ground into powder and obtain power-product with the intermembranous stronger caloic transmittance process of material.Dry powder and the porcelain ball of being raised folding are along with fluid bed is left in exhaust, through shelves net (7) and inert carrier separator (8), make the porcelain ball that carries in the exhaust all return in the fluid bed, the dry powder of carrying secretly in the exhaust converges through cyclone separator (9) earlier and amasss in hopper (10), and fine powder trap (11) reclaims the trickle power-product in the exhaust, and toxic emission is to atmosphere.
The invention has the advantages that adopted device of the present invention after, the ratio K of apparent fluidizing velocity of air-flow and critical fludization velocity is got 2.0-4.0 in the fluid bed, the hot gas temperature under the dispersion plate can not add agitator in the fluid bed, so just can surpass 90 ℃.Shelves net set in this device can be strengthened pulverizing process, reduces the porcelain ball and raises the folding amount and reduce the separated space height, thereby the housing total height is reduced.Be provided with the inert carrier separator can with raise the minority porcelain ball that folds capture Xia Lai And return in the fluid bed, thereby guarantee in power-product, not carry secretly the inert carrier foreign material.Set exterior mixing sprayer in this device, even cause jet off-centre owing to machining accuracy is not high, even when the drop phenomenon occurring at the nozzle place, can caking phenomenon not appear near the nozzle and on the shell wall side, so this device is compared with existing spray-drying installation, the structure of sprayer can be simple, processing request can reduce, thereby has reduced cost.Inert carrier in this device---porcelain ball has the ， And that can not chap and has very high rigidity and strength character under the temperature shock condition, can guarantee not to be entrained with in power-product inert carrier fragment foreign material.This device can become the material liquid primary drying humidity less than 0.5% power-product.
The present invention be advantageous in that the dispersion plate that is provided with high opening rate.The percent opening that uses in the existing fluidized drying technology is 1-3%, breaks through traditional percent opening in this device, select for use 5-20% than high opening rate, thereby the saving energy consumption.
Device of the present invention also has characteristics simple in structure, very compact and easy and simple to handle.The thermal efficiency of this device can reach 70%, and the vome of shell dry tenacity can reach 200-300 kilogram moisture/rice
3The time, under same production capacity and original design condition, this device is compared with existing spray-drying installation housing, can make the little 10-20 of housing volume doubly.
Accompanying drawing (1) is a structural representation of the present invention.
Specific embodiments of the invention are shown in accompanying drawing (1).Wherein be provided with high opening rate dispersion plate (3) in housing (4) bottom, be stacked with inert carrier (6) on it, the optimum opening porosity of dispersion plate is 11-15%; Inert carrier in the housing adopts the good alumina ball of thermophysical property, and porcelain spherolite footpath is selected to use between 1.0～4.0 millimeters, and stacking porcelain ball height on dispersion plate is 150～400 millimeters; The ratio K of apparent fluidizing velocity of the interior air-flow of fluid bed (14) and critical fludization velocity can be selected for use in 2.0～4.0; Material liquid conveyer of the present invention adopts the exterior mixing sprayer, and (5 〕 ， And by on the housing that is placed on the fluid bed concentrated phase area, can stretch out the feed liquid nozzle internal face 3-10 millimeter of housing with it; The shelves net (7) that is provided with in housing can be made of stainless steel cloth, and the aperture of mesh can be 1.2-2.5 times of maximum porcelain bulb diameter, and the shelves net is by in the dilute-phase zone that is placed on fluid bed; Inert carrier separator (8) is by the top that is placed on housing.
The hot gas under the dispersion plate and the selection of temperature thereof will be selected for use after the analysis according to concrete conditions such as the character of material liquid, product and energy conditions; General for different products, all can surpass 90 ℃, to improve the thermal efficiency of this device.For the product that has heat endurance under 150 ℃ high temperature, its air themperature can reach 700 ℃.Temperature correspondingly is controlled at according to product and hot gas temperature in 50-170 ℃ a certain temperature range and operates in the fluid bed, can obtain qualified power-product.
This device can be widely---solution, suspension or paste serous material---is processed in the production of power-product and uses with material liquid in chemistry, medicine and food industry.
Claims (6)
1, a kind of by housing [4], dispersion plate [3], inert carrier [6], the fluidisation dry tack free fuel pulverizing plant that fluid bed [14] and material liquid conveyer are formed.It is characterized in that being provided with in the housing [4] percent opening and be 5～20% dispersion plate [3], inert carrier [6] adopts alumina ball in housing [4], the material liquid conveyer adopts exterior mixing sprayer [5], is provided with backstop [7] and inert carrier separator [8] in the housing [4].
2, according to the described device of claim 1, it is characterized in that it is 5～20% dispersion plate (3) that said housing (4) bottom is provided with percent opening, be stacked with the inert carrier (6) that adopts alumina ball on it, exterior mixing sprayer (5) is arranged in the concentrated phase area of fluid bed (14), backstop (7) is by in the dilute-phase zone that is placed on fluid bed (14), and inert carrier separator (8) is by the top that is placed on housing (4).
3, according to claim 1 or 2 described devices, the particle diameter that it is characterized in that said alumina ball is 1.0～4.0 millimeters.
4,, it is characterized in that it is 150～400 millimeters that said dispersion plate (3) is gone up the height of stacking the porcelain ball according to claim 1 or 2 described devices.
5, according to claim 1 or 2 described devices, it is characterized in that saidly by the exterior mixing sprayer (5) on the housing (4) that is placed on fluid bed (14) concentrated phase area, its feed liquid nozzle stretches out the internal face 3-10 millimeter of housing (4).
6, according to claim 1 or 2 described devices, it is characterized in that said backstop (7) is the stainless steel cloth making, the aperture of mesh is 1.2～2.5 times of maximum porcelain bulb diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200130 CN85200130U (en) | 1985-04-01 | 1985-04-01 | Apparatus for making dry powder with fluidized-bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200130 CN85200130U (en) | 1985-04-01 | 1985-04-01 | Apparatus for making dry powder with fluidized-bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85200130U true CN85200130U (en) | 1985-11-10 |
Family
ID=4796542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85200130 Expired - Lifetime CN85200130U (en) | 1985-04-01 | 1985-04-01 | Apparatus for making dry powder with fluidized-bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85200130U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949858A (en) * | 2012-09-27 | 2013-03-06 | 池州市大恒生化有限公司 | Method for drying ground calcium carbonate slurry |
| CN103615240A (en) * | 2013-11-22 | 2014-03-05 | 长江大学 | Physical simulation experimental device for fluidization deformation of loosened settlings |
| CN108349822A (en) * | 2015-09-11 | 2018-07-31 | 圣戈本陶瓷及塑料股份有限公司 | The method for forming porous ceramic particles |
| CN109210870A (en) * | 2018-09-06 | 2019-01-15 | 浙江工业大学 | A kind of back-shaped inert particles fluidized bed drying equipment and its drying means |
| CN109603181A (en) * | 2018-12-27 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of equipment dry for complicated solution |
-
1985
- 1985-04-01 CN CN 85200130 patent/CN85200130U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949858A (en) * | 2012-09-27 | 2013-03-06 | 池州市大恒生化有限公司 | Method for drying ground calcium carbonate slurry |
| CN103615240A (en) * | 2013-11-22 | 2014-03-05 | 长江大学 | Physical simulation experimental device for fluidization deformation of loosened settlings |
| CN103615240B (en) * | 2013-11-22 | 2016-01-06 | 长江大学 | The physical simulation experiment device of friable deposit fluidisation distortion |
| CN108349822A (en) * | 2015-09-11 | 2018-07-31 | 圣戈本陶瓷及塑料股份有限公司 | The method for forming porous ceramic particles |
| CN109210870A (en) * | 2018-09-06 | 2019-01-15 | 浙江工业大学 | A kind of back-shaped inert particles fluidized bed drying equipment and its drying means |
| CN109210870B (en) * | 2018-09-06 | 2023-11-28 | 浙江工业大学 | Drying equipment and drying method for annular inert particle fluidized bed |
| CN109603181A (en) * | 2018-12-27 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of equipment dry for complicated solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |