CN2699969Y - Minitype spray drying device for laboratry - Google Patents
Minitype spray drying device for laboratry Download PDFInfo
- Publication number
- CN2699969Y CN2699969Y CN 200420022205 CN200420022205U CN2699969Y CN 2699969 Y CN2699969 Y CN 2699969Y CN 200420022205 CN200420022205 CN 200420022205 CN 200420022205 U CN200420022205 U CN 200420022205U CN 2699969 Y CN2699969 Y CN 2699969Y
- Authority
- CN
- China
- Prior art keywords
- drying
- spray
- sample
- top cover
- hothouse
- Prior art date
- 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
Links
- 238000001694 spray drying Methods 0.000 title claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 abstract description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 7
- 229940068984 polyvinyl alcohol Drugs 0.000 description 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 6
- 239000004927 clay Substances 0.000 description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052622 kaolinite Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101100342486 Oryza sativa subsp. japonica KSL10 gene Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a minitype spray drying device for a laboratory, which is characterized in that a spray gun of a spray device is connected with a sample bottle having a small volume, and a compressed air pipeline; a drum-shaped drying room is arranged in a drying device, the upper part of the drying device is provided with a conical top cover, the upper end of the top cover is provided with a hole, and demountable connection is formed between a drum body of the drying room, and the top cover; the bottom end of the drying room is provided with an electrothermal tube, and the electrothermal tube is connected with a temperature controller and a temperature control sensor. Solid powder is dispersed in polyvinyl alcohol liquid, and the solid-to-liquid ratio is between 1: 1.5 and 1: 2.5. Spraying pressure is controlled between 0.70 and 1.10 k g / c m < 2 >, drying temperature is controlled between 100 DEG C and 150 DEG C, spheric granular powder bodies with the size between 10 mu m and 50 mn m after drying have favorable flow performance. The minitype spray drying device for a laboratory is suitable for spraying and drying a small amount of powder bodies used for experiments in a laboratory.
Description
Technical field
The utility model belongs to the powder handling technology, relates in particular to the spray drying device of powder.
Background technology
The spray-drying installation of powder is widely used in the preparation of breeze, inorganic powdered material, medicine, biomaterial.It generally includes spraying and dry two parts system and device.In the market, this device volume is bigger, reaches several cubic meters, the structure heaviness, and the rate of recovery of sample is low, and it can only be used for the bigger place of sample size requirement.But under laboratory condition, generally need spray-dired sample size less or sample source is few, quantitative and the qualitative analysis as the X-ray diffraction of mineral, often require sample not have preferred orientation, the spray drying treatment sample is best processing mode, but the demand to sample is few, have 1～5 gram sample just enough, this reaches spray-dired requirement with regard to being difficult to commercially available spraying apparatus; In addition, when the powder body material test of high rheological characteristic, also require the small sample spray-drying.
Summary of the invention
The utility model purpose is to solve the problem that prior art exists, and a kind of small-sized sprayer unit in laboratory of compact conformation is provided.
For achieving the above object, this spray-drying installation technical scheme comprises spraying and dry two parts device.Its architectural feature is sample bottle and the compressed air piping that the spray gun of sprayer unit connects little volume; Drum shape hothouse is arranged in drying device, conical top cover is arranged above it, the hole is established in top cover upper end, between hothouse cylinder body and the top cover for removably connecting; In the hothouse bottom electrothermal tube is housed, electrothermal tube and temperature controller and temperaturecontrol sensor link.
The use of above-mentioned spray-drying installation:
One, first supending
Earlier be that 30000～70000 polyethylene 0.5 gram is dissolved in the 100mL ethanolic solution with molecular weight, produce concentration and be 0.5% poly-vinyl alcohol solution,＜200 purpose solid powders are scattered in the poly-vinyl alcohol solution again, poly-vinyl alcohol solution plays the effect of adhesive.For the sample of high clay content, have good cohesive equally with clear water (without poly-vinyl alcohol solution), add 1 antifoaming agent n-octyl alcohol solution (1-octanol (CH
3(CH
2)
7OH) be dissolved in alcohol) foaming phenomenon in the time of can avoiding disperseing.
The amount of powder and poly-vinyl alcohol solution consumption in the suspension (being the solid-liquid ratio) depend on the character of sample.For non-clay class powder, 1: 1.5～1: 2.5 commonly used.General solid-liquid ratio is can both obtain preferably effect at 1: 2.For some clay, solid-liquid is bigger than changing, and as the smectite clay, can reach 1: 6, can produce the suspension of appropriate flow sex change by further dilution.
The suitable suspension of preparation concentration is the key that the spraying sample is prepared.Higher solid-liquid is than the spherical-like morphology that can reduce drying time and assurance dried particles; And lower solid-liquid ratio is easier to pass through nozzle and nonchoking nozzle under low-pressure.Experiment shows, considers the rate of recovery of product, and best atomisation pressure is 0.70～1.10kg/cm
2Pressure is high more, and drop is thin more, and the spheric granules of product is more little.In fact, the product particle diameter can cause in its thermal current that is suspended in hothouse during less than 10 μ m, and can not be deposited in the bottom of hothouse; Lower spray gun pressure, the drop spouting velocity is slower, and is longer with the time of contact of thermal current, bone dry in the time of at the bottom of dropping to case.The viscosity of suspension has also influenced the size of ejection droplet.Viscosity is big, and droplet is big, but difficult ejection under the low pressure.
Two, the operating procedure of spray-drying installation
1, dry kiln.Start electrothermal tube, by monitoring of the temperature control sensor in the hothouse addendum cone and control temperature.Heat and can reach 150 ℃ in 10～15 minutes, at this moment the temperature of hothouse body bottom is about 90 ℃.
For general sample, the temperature in the hothouse is controlled at 100～150 ℃ and can both meets the demands.Temperature is too low, can make sample fully drying just fall at the bottom of the chamber;
2, after reaching predetermined temperature, a sizeable paper places the bottom of hothouse, is used to hold the sample after the spray-drying.Deployed suspension is moved into the spray gun sample bottle, and connect with the spray gun interface thread.Regulate Pressure gauge pressure to 0.70～1.10kg/cm
2Then, pistol, vertical downwards in hothouse vertex of a cone mouth, the manual Switch of spray pistol size of regulating sprays into suspension in the hothouse with the control flow velocity.Simultaneously, shaking sample bottle gently makes the suspension in it even.Whole suspension can be sprayed into hothouse in about 1～5 minute;
3, pull out the paper of containing sample gently, collect the drying sample on it standby;
4, cleaning sample bottle and spray gun.Clear water is filled sample bottle, regulate pressure to 3kg/cm
2, open the gun controls switch, spraying is cleaned, three times repeatedly.Changing another sample or preservation again treats to use next time.
Three, the recovery of drying sample
Typical spray-drying sample presents the spheric granules of diameter 10～50 μ m.The weight of original powder sample weight of weighing and dry powder sample can calculate the dried recovered rate.General dried recovered rate can reach 80～85%.
Elevated pressures is (as 1.10kg/cm
2) under spray-drying, often, be easy to be suspended in the hot-air or float in the air because droplet is thinner, and the spheric granules of drying sample is also less, the rate of recovery at this moment is then lower, sometimes only 50%.Lower pressure is (as 0.70kg/cm
2) under spray-drying, the rate of recovery can reach 80%.
Advantage of the present invention, owing to adopt the airbrush (spray gun) of drawing usefulness and the hothouse of little volume, compact conformation, the required powder sample amount of spraying sample is few, the hothouse of small sample bottle and corresponding volume, the sample size of required powder is few, is specially adapted to the laboratory and uses, and the powder rheological characteristic that obtains after the spray-drying is good; And be convenient to clean.
Description of drawings
Fig. 1 is the structural representation of the utility model spray-drying installation.
The specific embodiment
With reference to the description of drawings embodiment:
As shown in the figure, air compressor machine 13 compressed air ducts 4 link to each other with spray gun 1 in the sprayer unit, are connected the front of gun controls switch 2, have small sample bottle 3 to be connected with spray gun 1 in the back of gauge tap.Sample bottle, compressed air hose pipeline joint and spray gun constitute one, the Crescendo No 175-7 airbrush that can adopt commercial airbrush BadgerAir-Brush Co made in U.S.A to produce, the sample bottle that it is 20mL that this airbrush (spray gun) carries a volume, bottleneck links to each other with screw thread with spray gun; The compressed air hose pipeline joint is arranged on spray gun, and compressed air can produce the capacity 0.08M of this air compressor machine by KS10 type air compressor machine 13
3/ min, maximum pressure 0.8Mpa, power of motor 0.75kw is enough to provide required compressed air.
Drying device mainly is a hothouse 5, it makes the drum body of φ 40cm * 85cm by the thick aluminium sheet of 2mm, adorns 2 1000W electrothermal tubes 7 in its bottom, is around on wide one section of drum bottom 15cm, and be fixed on the cylinder body, its outside is incubated with insulation materials such as asbestos cloth parcel.Electrothermal tube connects with electronic temperature controller 8, temperature control sensor 9 (temperature thermocouple).The bottom half of hothouse adds the footing 10 of two wide 5cm of long 20cm, and makes the hothouse casing be higher than footing bottom surface 0.5cm.The cone angle that the top cover of hothouse body is made by the 2mm aluminium sheet is 90 ° a cone 6, and the vertex of a cone is clipped and kept the hole that a diameter is 2.5cm, for spraying 12 usefulness.Be detachable between the vertex of a cone of hothouse and the drum body and connect, be convenient to clean.
Use the utility model to the spray-dired embodiment of sample:
Take by weighing＜200 purpose kaolinite clay, 6.2 grams, adding concentration is 0.5% poly-vinyl alcohol solution 15mL, fully stirring or put into miniature grinding machine grinding fully was mixed it in 3 minutes, and make suspension, move in the sample bottle 3 of spray gun, can add 1～2mL clear water and clean grinding machine, for improving the rate of recovery, cleaning fluid also moves in the sample bottle.
Dry kiln makes it reach 120 ℃.The paper 11 of placing 38 * 50cm size is in the drying box bottom.The adjusting atomisation pressure is 0.70kg/cm
2Pistol makes the vertical sensing hothouse of nozzle in hothouse bellmouth top, opens Switch of spray pistol gently, finishes the spray-drying of kaolinite sample in 2 minutes.
Extract the paper 11 of containing sample out, collect drying sample.Cross and claim to such an extent that drying sample 5.5 restrains.The rate of recovery is 5.2/6.2=84%.
Last cleaning spray gun and sample bottle.
Drying sample is tiled in the specimen holder of X-ray diffraction analysis usefulness, makes omnidirectional sample.With the XRD figure spectrum that it obtains, good reproducibility, no preferred orientation is suitable for quantitative study.
Claims (2)
1, the small-sized spray-drying installation used of a kind of laboratory comprises spraying and dry two parts device, it is characterized in that the sample bottle (3) and the compressed air piping (4) of the little volume of spray gun (1) connection of sprayer unit; Drum shape hothouse (5) is arranged in drying device, conical top cover (6) is arranged above it, and the hole is established in top cover upper end, between hothouse cylinder body and the top cover for removably connecting, electrothermal tube (7) is housed in the hothouse bottom, and electrothermal tube and temperature controller (8) and temperaturecontrol sensor (9) link.
2, by the described small-sized spray-drying installation of claim 1, it is characterized in that spray gun (1) and sample bottle (3) and compressed air hose pipeline joint are overall structure, adopt Crescendo 175-7 type airbrush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022205 CN2699969Y (en) | 2004-04-21 | 2004-04-21 | Minitype spray drying device for laboratry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022205 CN2699969Y (en) | 2004-04-21 | 2004-04-21 | Minitype spray drying device for laboratry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699969Y true CN2699969Y (en) | 2005-05-18 |
Family
ID=34770263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420022205 Expired - Lifetime CN2699969Y (en) | 2004-04-21 | 2004-04-21 | Minitype spray drying device for laboratry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699969Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395535C (en) * | 2004-04-21 | 2008-06-18 | 浙江大学 | Small spray drying appts. for lab and its application method |
| CN106563286A (en) * | 2016-11-03 | 2017-04-19 | 中北大学 | Crystallization hanging basket used for preparing nanometer and micrometer particles through supercritical atomization and crystallization process |
-
2004
- 2004-04-21 CN CN 200420022205 patent/CN2699969Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395535C (en) * | 2004-04-21 | 2008-06-18 | 浙江大学 | Small spray drying appts. for lab and its application method |
| CN106563286A (en) * | 2016-11-03 | 2017-04-19 | 中北大学 | Crystallization hanging basket used for preparing nanometer and micrometer particles through supercritical atomization and crystallization process |
| CN106563286B (en) * | 2016-11-03 | 2019-04-05 | 中北大学 | A kind of overcritical atomization crystallization processes preparation receives micron particles and crystallizes hanging basket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080618 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |