CN203355346U - Evaporative crystallization device - Google Patents
Evaporative crystallization device Download PDFInfo
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- CN203355346U CN203355346U CN 201320388803 CN201320388803U CN203355346U CN 203355346 U CN203355346 U CN 203355346U CN 201320388803 CN201320388803 CN 201320388803 CN 201320388803 U CN201320388803 U CN 201320388803U CN 203355346 U CN203355346 U CN 203355346U
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Abstract
The utility model discloses an evaporative crystallization device. The evaporative crystallization device comprises a crystallizer (1) and also comprises a seed crystal container (2), wherein the seed crystal container (2) is communicated with an inner cavity of the crystallizer (1) through a pipeline (3); and a gas inlet is formed in the seed crystal container (2). According to the evaporative crystallization device provided by the utility model, the seed crystal container capable of adding seed crystals is arranged outside the crystallizer, and the funneled seed crystal container enables the accommodated seed crystals to be absorbed into the pipeline completely and enter the crystallizer. Crystal granules generated in the crystallizer are uniform by controlling the adding amount of the seed crystal, and the anti-caking property of crystals is stronger. The phenomenon that a solution has large supersaturation degree and multiple clustered crystals when the solution is crystallized natural is avoided, and high-quality crystal products can be produced.
Description
Technical field
The utility model relates to the evaporative crystallization technical field, particularly, relates to a kind of evaporated crystallization device.
Background technology
At present, industrial making anhydrous citric acid is mainly the method that adopts evaporative crystallization, and the natural graining by solution obtains anhydrous citric acid crystal.The shortcoming of existing industrial preparation method is: the first, and solution nature graining, degree of supersaturation is large, and while causing graining, the anhydrous citric acid crystal glomerocryst is many, and product moisture content is high, easily caking; The second, the particle of system initial operating stage crystal is less than normal, can not satisfy the demands, and therefore needs a kind of anhydrous citric acid crystallizer that can improve above-mentioned drawback.
The utility model content
The purpose of this utility model is to provide a kind ofly can improve that in crystallization process, the crystal glomerocryst is many, moisture is high, the evaporated crystallization device of caking and the little drawback of Crystallization particle.
To achieve these goals, the utility model provides a kind of evaporated crystallization device, comprises crystallizer, also comprises seed crystal holder, and described seed crystal holder is communicated with the inner chamber of described crystallizer by pipeline, on this seed crystal holder, is formed with air inlet.
Seed crystal holder is set and in crystallizer, carries crystal seed, can make the supersaturated solution in crystallizer homogeneously crystallized, the crystalline particle of generation is even, and moisture content is low.Crystalline particle is large.
Preferably, described seed crystal holder is the back taper funnel-form, and described pipeline is communicated to the inner chamber of described crystallizer from this seed crystal holder bottom.
Preferably, described pipeline is provided with valve.
Preferably, described seed crystal holder top is provided with top cover, and described air inlet is formed on described top cover.
Preferably, be provided with the air inlet pipe from penetrating outside described seed crystal holder top in the inner chamber of described seed crystal holder, the bottom of this air inlet pipe is fixedly connected with the inwall of described seed crystal holder by supporting leg; Described top cover is two clamping plate, and from the both sides clamping and cover the top of described seed crystal holder, the joint of two described clamping plate is formed with the depressed part of the described air inlet pipe outer peripheral face of laminating.
Preferably, the top of described air inlet pipe is equipped with filter.
Preferably, the angle of the intracavity sidewall of described seed crystal holder bottom and horizontal plane is 15 degree～75 degree.
Preferably, described seed crystal holder bottom is 25mm～50mm with the opening diameter of described pipeline junction, corresponding, the internal diameter of described pipeline is 25mm～50mm.
Preferably, the internal diameter ratio of the internal diameter of described air inlet pipe and described pipeline is 0.08～0.32:1.
The evaporated crystallization device the utility model proposes, can add the seed crystal holder of crystal seed in the crystallizer outer setting, funnelform seed crystal holder makes the crystal seed held all be inhaled into pipeline and to enter in crystallizer.Add crystal seed quantity by control, make the crystal grain of generation in crystallizer even, the anti-caking performance of crystal is strong.While having stopped solution nature graining, the solution degree of supersaturation is large, and the phenomenon that glomerocryst is many, can produce high-quality crystal product.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
The accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms the part of specification, is used from explanation the utility model with the following specific embodiment one, but does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the evaporated crystallization device that provides of the utility model.
Description of reference numerals
1 crystallizer 11 visors
12 wire mesh demister 2 seed crystal holders
21 supporting leg 3 pipelines
4 valve 5 air inlet pipe
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
The evaporated crystallization device the utility model proposes, as shown in Figure 1, comprise crystallizer 1, also comprises seed crystal holder 2, and seed crystal holder 2 is communicated with the inner chamber of crystallizer 1 by pipeline 3, on this seed crystal holder 2, is formed with air inlet.
The mode of in the past producing the anhydrous citric acid employing is spontaneous nucleation, adopts oversaturated solution to obtain anhydrous citric acid crystal in evaporative crystallization.The cited method for crystallising of the utility model is to adopt external crystal seed equipment directly in crystallizer 1, to add crystal seed, and crystal seed can produce uniform particles, bulky grain crystal that water content is low in crystallizer 1, and the crystalline product quality of generation is higher.In actual mechanical process, can also the crystal seed quantity that will add be controlled, controlled from the quantity that makes to produce crystal.
For the seed crystal holder 2 that holds crystal seed, in order to make crystal seed, can successfully by crystallizer 1, all be sucked, seed crystal holder 2 can be set to the back taper funnel-form, pipeline 3 is communicated to the inner chamber of crystallizer 1 from these seed crystal holder 2 bottoms.Crystal seed can be along the sidewall down sliding of funnelform seed crystal holder 2, can adhesion or remain in seed crystal holder 2.The horizontal cross-section of funnel-form seed crystal holder 2 can be also various shape in addition, can be for example one or more in circle, ellipse, polygon, irregular shape.
In an embodiment of the present utility model, be provided with valve 4 on pipeline 3.Owing to being negative pressure in the inner chamber of crystallizer 1, therefore the crystal seed held in seed crystal holder 2 constantly can be sucked, in the situation that meet addition valve-off 4, seed crystal holder 2 is not communicated with crystallizer 1, facilitated operation.
In order not affect when adding crystal seed in seed crystal holder 2, the system feed liquid is contaminated, avoids allowing dust enter system, can also top cover be set at seed crystal holder 2 tops, and air inlet is formed on top cover.Open top cover and can add crystal seed.
Further, can also in the inner chamber of seed crystal holder 2, be provided with the air inlet pipe 5 from penetrating outside seed crystal holder 2 tops, the bottom of this air inlet pipe 5 is fixedly connected with the inwall of seed crystal holder 2 by supporting leg 21; Top cover is two clamping plate, and from the both sides clamping and cover the top of seed crystal holder 2, the joint of two clamping plate is formed with the depressed part of laminating air inlet pipe 5 outer peripheral faces.Air inlet pipe 5 penetrates internal tank from seed crystal holder 2, until approach the opening part of seed crystal holder 2 bottoms.Can concentrate before entering pipeline 3 due to crystal seed to the bottom of funnel-form seed crystal holder 2 and assemble, likely there will be the blocked phenomenon of bottom opening in accumulation process, make crystal seed can not enter pipeline 3, therefore, air inlet pipe 5 is stretched to the position that approaches bottom opening, can blow by the air that enters seed crystal holder 2 inside the crystal seed of assembling open herein, play auxiliary effect of carrying.
As shown in Figure 1, air inlet pipe 5 is fixed together with the inwall of seed crystal holder 2, forms supporting leg 21 on the inwall of seed crystal holder 2, with the bottom of air inlet pipe 5, is fixedly connected with.The top cover at seed crystal holder top covers open top when not reinforced, and two clamping plate coordinate from both sides to be realized hiding.The depressed part arranged on clamping plate just in time can be fitted with the outer peripheral face of air inlet pipe 5, thereby guarantees that seed crystal holder 2 inside can not fall into other foreign material.And, when reinforced, do not need two clamping plate are all opened, only open the clamping plate of a side and can realize reinforced work.
In addition, in order to guarantee foreign material, can not fall into from the mouth of pipe of air inlet pipe 5, in an embodiment of the present utility model, also list: the top in air inlet pipe 5 is equipped with filter.Filter is mainly the effect of playing isolated dust or foreign material, and the material therefore used can be multiple, for example can apply the port that 200 purpose wire gauzee filters are wrapped in air inlet pipe 5, realizes filtering purpose.
Further, for the structure of used funnel-form seed crystal holder 2, the angle of inclination of the bottom intracavity sidewall of its funnel-shaped structure also can have multiple.For example, the intracavity sidewall of seed crystal holder 2 bottoms and the angle of horizontal plane are 15 degree～75 degree, the angle of optimum structure is 30 degree～60 degree, this container bottom both can guarantee the smooth flow ipe 3 of the crystal seed held, can not be bonded at bottom, can guarantee that again the crystal seed that assemble at seed crystal holder 2 bottom opening places can be not too much, cause opening to stop up.
Generally, can seed crystal holder 2 bottoms and the opening diameter of pipeline 3 junctions be set to 25mm～50mm, corresponding, the internal diameter of pipeline 3 is 25mm～50mm, and for the selection of air inlet pipe 5, the utility model lists the internal diameter ratio of the internal diameter of air inlet pipe 5 and pipeline 3 is controlled in the scope of 0.08～0.32:1, can guarantee that crystal seed enters pipeline 3 smoothly.
For the setting of crystallizer 1, in the inner chamber of crystallizer 1, wire mesh demister 12 can be set, wire mesh demister 12 is positioned at cavity top.Wire mesh demister 12 is gas-liquid separation devices, gas, can be except the mist of deentrainment by the silk screen of wire mesh demister 12, and its principle is: when the gas with mist rises by silk screen with certain speed, the filament of mist and silk screen collides, thereby is attached to the surface of filament.On filament surfaces mist assemble more after, forms larger drop, until drop separates whereabouts from filament, fall back in the solution of crystallizer 1 inside.Gas, by after wire mesh demister 12, is substantially free of mist.Under preferable case, visor 11 can also be set on crystallizer 1, its effect is for observing the crystallization reaction situation in crystallizer 1, monitors and produces, and conveniently according to the situation of crystallizer 1 inside, is regulated, and guarantees production safety.
Crystallizer 1 of the present utility model can be selected one or more in OSLO crystallizer, FC crystallizer, DTB crystallizer, DP crystallizer, wherein, the OSLO crystallizer is grading type crystallizer, the FC crystallizer is for forcing outer circulation type crystallizer, the DTB crystallizer is internal circulation crystallizer for crystal slurry, and the DP crystallizer is novel internal circulation crystallizer for crystal slurry.
Introduce the course of work of evaporated crystallization device of the present utility model below in conjunction with Fig. 1.
Take the anhydrous citric acid crystallization as example, keep air inlet pipe 5 top port places to wrap up 200 purposes and filter silk screen, raw material (citric acid solution, concentration is 60%) carry out evaporative crystallization in crystallizer 1 cavity, when the feed liquid in crystallizer 1 reaches certain degree of supersaturation, a certain amount of crystal seed is added in seed crystal holder 2, open the valve 4 on the pipeline 3 that crystallizer 1 is connected with seed crystal holder 2.Because crystallizer 1 is interior, it is negative pressure, crystallizer 1 inside and outside pressure reduction can suck crystal seed in crystallizer 1, keep air inlet under the state that air inlet pipe 5 in seed crystal holder 2 is opened at valve 4, can guarantee not there will be clogging in the process of crystal seed in being inhaled into crystallizer 1 cavity.After crystal seed all is inhaled into crystallizer 1 inner chamber, valve-off 4, after being incubated half an hour, continue evaporative crystallization, by the growing state of visor 11 observable crystal.But blowing after the crystal of crystallization reaches certain volume, complete evaporation and crystal process.
The evaporated crystallization device the utility model proposes, can add the seed crystal holder of crystal seed in the crystallizer outer setting, funnelform seed crystal holder makes the crystal seed held all be inhaled into pipeline and to enter in crystallizer.Add crystal seed quantity by control, make the crystal grain of generation in crystallizer even, the anti-caking performance of crystal is strong.While having stopped solution nature graining, the solution degree of supersaturation is large, and the phenomenon that glomerocryst is many, can produce high-quality crystal product.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can be combined by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present utility model, also can carry out any combination, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. an evaporated crystallization device, comprise crystallizer (1), it is characterized in that, also comprises seed crystal holder (2), and described seed crystal holder (2) is communicated with the inner chamber of described crystallizer (1) by pipeline (3), and this seed crystal holder is formed with air inlet on (2).
2. evaporated crystallization device according to claim 1, is characterized in that, described seed crystal holder (2) is the back taper funnel-form, and described pipeline (3) is communicated to the inner chamber of described crystallizer (1) from this seed crystal holder (2) bottom.
3. evaporated crystallization device according to claim 2, is characterized in that, described pipeline (3) is provided with valve (4).
4. evaporated crystallization device according to claim 3, is characterized in that, described seed crystal holder (2) top is provided with top cover.
5. evaporated crystallization device according to claim 4, it is characterized in that, be provided with the air inlet pipe (5) from penetrating outside described seed crystal holder (2) top in the inner chamber of described seed crystal holder (2), the bottom of this air inlet pipe (5) is fixedly connected with the inwall of described seed crystal holder (2) by supporting leg (21); Described top cover is two clamping plate, and from the both sides clamping and cover the top of described seed crystal holder (2), the joint of two described clamping plate is formed with the depressed part of laminating described air inlet pipe (5) outer peripheral face.
6. evaporated crystallization device according to claim 5, is characterized in that, the top of described air inlet pipe (5) is equipped with filter.
7. evaporated crystallization device according to claim 6, is characterized in that, the intracavity sidewall of described seed crystal holder (2) bottom and the angle of horizontal plane are 15 degree～75 degree.
8. evaporated crystallization device according to claim 7, is characterized in that, described seed crystal holder (2) bottom is 25mm～50mm with the opening diameter of described pipeline (3) junction, corresponding, the internal diameter of described pipeline (3) is 25mm～50mm.
9. evaporated crystallization device according to claim 8, is characterized in that, the internal diameter ratio of the internal diameter of described air inlet pipe (5) and described pipeline (3) is 0.08～0.32:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320388803 CN203355346U (en) | 2013-07-01 | 2013-07-01 | Evaporative crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320388803 CN203355346U (en) | 2013-07-01 | 2013-07-01 | Evaporative crystallization device |
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| CN203355346U true CN203355346U (en) | 2013-12-25 |
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| CN 201320388803 Expired - Fee Related CN203355346U (en) | 2013-07-01 | 2013-07-01 | Evaporative crystallization device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085933A (en) * | 2014-07-22 | 2014-10-08 | 北京金泰天成科技有限责任公司 | High-salinity and high organic matter wastewater treatment process |
| CN104857737A (en) * | 2015-06-01 | 2015-08-26 | 江苏迈达新材料股份有限公司 | Seed tank capable of automatically adding seed crystals |
| CN107188798A (en) * | 2017-05-27 | 2017-09-22 | 湖南新绿方药业有限公司 | A kind of process for refining of sodium citrate of controllable granularity and realize device |
| CN108217794A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | It is a kind of can simultaneously a variety of waste liquids of crystallization treatment method and device |
-
2013
- 2013-07-01 CN CN 201320388803 patent/CN203355346U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085933A (en) * | 2014-07-22 | 2014-10-08 | 北京金泰天成科技有限责任公司 | High-salinity and high organic matter wastewater treatment process |
| CN104857737A (en) * | 2015-06-01 | 2015-08-26 | 江苏迈达新材料股份有限公司 | Seed tank capable of automatically adding seed crystals |
| CN107188798A (en) * | 2017-05-27 | 2017-09-22 | 湖南新绿方药业有限公司 | A kind of process for refining of sodium citrate of controllable granularity and realize device |
| CN108217794A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | It is a kind of can simultaneously a variety of waste liquids of crystallization treatment method and device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20170701 |