CN206045463U - Low-pressure superheated steam assisted evaporative crystallization apparatus - Google Patents
Low-pressure superheated steam assisted evaporative crystallization apparatus Download PDFInfo
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- CN206045463U CN206045463U CN201620966559.4U CN201620966559U CN206045463U CN 206045463 U CN206045463 U CN 206045463U CN 201620966559 U CN201620966559 U CN 201620966559U CN 206045463 U CN206045463 U CN 206045463U
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Abstract
This utility model is related to a kind of low-pressure superheated steam assisted evaporative crystallization apparatus, between vaporizer and crystallizer, adds pre-crystallizer.Wherein pre-crystallizer is by pre-crystallizer tank body, dope distributor and steam speedup distributor three parts composition.In material after the concentration of vaporizer, material is transported in pre-crystallizer by dope delivery pump, dope uniform cloth liquid in pre-crystallizer by dope distributor, and the low-pressure saturated steam produced by low-pressure saturated steam generator is after the heat exchange of heat exchanger, it is changed into low-pressure superheated steam, pre-crystallizer is entered by steam speed increaser, with the dope contact heat-exchanging under top, the moisture remained in taking away dope, the effect of the further evaporation and heat-exchange of material is reached, final material crystallizes precipitation in a crystallizer.Low-pressure saturated steam generator is produced in a water bath, therefore the preheating using evaporation and crystallization system is heated to water bath device, reaches the effect of efficient utilization waste heat.
Description
Technical field
This utility model is related to a kind of crystallization apparatus, a kind of low-pressure superheated steam assisted evaporative crystallization apparatus of specific design,
Belong to evaporation crystallization equipment technical field.
Background technology
In evaporation and crystal process, a considerable amount of low temperature or low-pressure steam can be produced, these steam except preheating material or
It is, outside incoagulable gas, to be substantially condensed, becomes condensed water discharge.So how sufficiently to be steamed using this part
Vapour, what is become under the background of energy shortage and energy crisis are particularly important.Certainly, the low temperature or low for producing in evaporation and crystal process
Pressure steam has carried out certain application in existing technology, and achieves considerable effect.As for indirect steam
Mechanical compress, makes intensification be changed into heating the MVR technologies of steam, and what is carried out in this technology evaporative crystallization industry at home is wide
General application.So, how the collection of the steam of the low temperature of low pressure is got up, after process optimization, reapplies evaporation knot
Also what is become during crystalline substance is more and more important.In dry technology, there is scholar to start to be dried reality to low-pressure superheated steam
Research is tested, some the physics and chemistry advantages of low-pressure superheated steam when being dried has been drawn, but has been deposited in operating process is specifically put into practice
In very big technical difficulty, the generation of low-pressure superheated steam is simultaneously uncomplicated, due to existing evaporative crystallization technique technique in it is low
The problems such as pressure steam is not easy to collection so that practice operation is more difficult, and those skilled in the art has attempted to various
Method, but effect is not ideal.
The content of the invention
In order to solve above-mentioned problem, the utility model discloses a kind of low-pressure superheated steam assisted evaporative crystallization dress
Put, it is the technical scheme simple structure, compact, design ingenious, the program improves the effect of evaporative crystallization using low-pressure superheated steam
Rate, increases the availability of low-pressure superheated steam so that energy utilization rate is maximized in evaporation process.
To achieve these goals, the technical solution of the utility model is as follows, a kind of low-pressure superheated steam assisted evaporative knot
Brilliant device, it is characterised in that the crystallization apparatus include product pump, material preheater, low-pressure steam generator, heat exchanger, drop
Film evaporator, dope delivery pump, pre-crystallizer, crystallizer and condenser, the material preheater are arranged on product pump and drop
Between film evaporator, connected by pipeline, the heat exchanger is arranged between low-pressure steam generator and pre-crystallizer, described pre-
Crystallizer connects condenser by pipeline, and the dope delivery pump is arranged between falling film evaporator and pre-crystallizer, described pre-
Crystallizer connects crystallizer by pipeline.The saturation that the technical scheme is produced by low-pressure saturated steam generator under negative pressure operating mode is steamed
Vapour, is changed into low-pressure superheated steam Jing after heat exchanger heat exchange, then enters pre-crystallizer after being raised speed by steam injection speed increaser.Tying in advance
In brilliant device, steam enters bottom steam even distribution device, carries out contact heat-exchanging with the material under being sprayed by dope distributor, makes dope
In moisture further separate, improve evaporative crystallization efficiency.Low-pressure saturated steam generator is produced in a water bath, therefore
Water bath device is heated using the preheating of evaporation and crystallization system, reach the effect of efficient utilization waste heat.This practicality simultaneously
The resistance that the dope that superheated steam distributor in pre-crystallizer in novel process takes into full account is produced to which, optimizes which
The structure of body, beneficial to the carrying out of the contact heat-exchanging inside pre-crystallizer.
Used as a kind of improvement of the present utility model, the pre-crystallizer includes pre-crystallizer tank body, dope distributor and steaming
Vapour speedup distributor, the dope distributor and steam speedup distributor are arranged in pre-crystallizer tank body.The dope distribution
Device is bigger than the perforate of common material distributor, and opening diameter is in φ 38mm, while dope distributor is and pre-crystallizer tank body
What inwall overlapped；Steam speedup distributor is diffusion velocity hooster and distribution of steam disk composition by threeway connection end, wherein
Depending on the length of diffusion velocity hooster and inclination angle are according to the size of pre-crystallizer, threeway connection end except connect diffusion velocity hooster and
Outside steam inlet pipe line, lower end condensate can also be discharged in time.
Used as a kind of improvement of the present utility model, the crystallization apparatus also include vacuum pump and pond, and the vacuum pump is used
In the vacuum for maintaining whole device, one end of condenser is connected by pipeline.
Used as a kind of improvement of the present utility model, the steam speedup distributor includes distribution of steam disk, diffusion velocity hooster
And threeway connection end, the top connection distribution of steam disk of the diffusion velocity hooster, the lower section connection three of the diffusion velocity hooster
Lead to rank end.
A kind of low-pressure superheated steam assisted evaporative crystallization processes, it is characterised in that the technique is as follows：1）Material is from material
Pump is preheated in preheater, and preheating temperature is determined according to material characteristic and evaporation requirement, and the material after preheating is entered
In falling film evaporator, the low-pressure saturated steam that now low-pressure steam generator is produced becomes low pressure after the heat exchange of heat exchanger
Superheated steam, enters pre-crystallizer by steam speedup distributor, and the low-pressure superheated steam stream of high speed is formed in pre-crystallizer；Cross
The temperature detected by the temperature sensor in pre-crystallizer in journey is controlling the size of heat exchanger hot and cold water effluent amount so as to full
Sufficient low-pressure steam is the superheated steam at a temperature of formulating in into steam speedup distributor.
2）After material completes evaporation and heat-exchange in falling film evaporator, squeezed in pre-crystallizer by dope delivery pump, utilized
Dope distributor cloth liquid, is now formed counter current contacting heat exchange, further goes out to fall the moisture in dope with internal flow of superheated steam,
Material enters crystallization in crystallizer and separates out afterwards；
3）The indirect steam produced in pre-crystallizer is changed into condensed water discharge, for two after the heat exchange of condenser
After this indirect steam being processed in the less operating mode of material clamp band in secondary steam, squeeze in low-pressure steam generator, so
The power consumption that heating in water bath produces low-pressure saturated steam can just be saved.
Relative to prior art, advantage of the present utility model is as follows, and 1）Whole Technical Design is ingenious, and simple structure is tight
Gather, 2）The technical scheme mesolow superheated steam assisted evaporative crystallization apparatus are the reasonable utilizations to low-pressure steam, are taken into full account
In vapo(u)rization system substantial amounts of low pressure or Low Temperature Steam may be produced in running, realize the utilization of low-grade energy, while
For processing heat sensitive material, be evaporated eliminating water using low-pressure superheated steam, can fully ensure that the physical property of material not by
Destruction, therefore, it is beneficial using low-pressure superheated steam assisted evaporative crystallization process；2）The technical scheme mesolow superheated steam
It is to be produced by low-pressure steam generator, in fact, in evaporation and crystallization system, considerable amount of low pressure can be produced or low temperature steams
Vapour, the program just provide a kind of approach using such steam, and the utilization of the different-energy grade steam for taking into full account is filled
The merogenesis about energy, and realize maximally utilizing for the energy；3）The technical scheme improves evaporation using low-pressure superheated steam
The efficiency of crystallization, increases the availability of low-pressure superheated steam, there is provided a kind of design science is reasonable, process optimization, processing mode
Novel, treatment effeciency efficiently and assisted evaporative crystallization novel process；4）The technical scheme cost is relatively low, is easy to further push away
It is wide to apply.
Description of the drawings
Fig. 1 is pre-crystallized process route chart；
Fig. 2 is low-pressure superheated steam assisted evaporative crystallization apparatus system diagram；
Fig. 3 is that steam sprays speedup distributor schematic diagram.
Fig. 4 is pre-crystallizer component diagram.
In figure：1- product pumps, 2- material preheaters, 3- low-pressure steam generators, 4- heat exchangers, 5- falling film evaporators, 6-
Dope delivery pump, 7- pre-crystallizers, 8- crystallizers, 9- condensers, 10- vacuum pumps, 11- ponds, 12- dope distributors, 13- are pre-
Crystallizer tank body, 14- steam speedup distributors, 15- diffusion velocity hoosters, 16- threeways connection end, 17, distribution of steam disk.
Specific embodiment
In order to deepen to be appreciated and understood by of the present utility model, with reference to the accompanying drawings and detailed description, further explain
Bright this utility model.
Embodiment 1：
Referring to Fig. 1-Fig. 4, a kind of low-pressure superheated steam assisted evaporative crystallization apparatus, the crystallization apparatus include product pump 1,
Material preheater 2, low-pressure steam generator 3, heat exchanger 4, falling film evaporator 5, dope delivery pump 6, pre-crystallizer 7, crystallizer 8
And condenser 9, the material preheater 2 is arranged between product pump 1 and falling film evaporator 5, is connected by pipeline, described to change
Hot device 4 is arranged between low-pressure steam generator 3 and pre-crystallizer 7, and the pre-crystallizer 7 connects condenser, institute by pipeline
State dope delivery pump 6 to be arranged between falling film evaporator 5 and pre-crystallizer 7, the pre-crystallizer 7 connects crystallizer by pipeline
8.The technical scheme is produced the saturated vapor under negative pressure operating mode by low-pressure saturated steam generator, Jing after heat exchanger heat exchange is changed into low
Vapourss are pressed through, then pre-crystallizer are entered after being raised speed by steam injection speed increaser.In pre-crystallizer, steam enters bottom steam
Even distribution device, carries out contact heat-exchanging with by the lower material of dope distributor spray, the moisture in dope is further separated, raising
The efficiency of evaporative crystallization.
Embodiment 2：
Referring to Fig. 1, Fig. 2, as it is of the present utility model it is a kind of improve, the pre-crystallizer 7 includes crystallizer tank body 13, dense
Liquid distributor 12 and steam speedup distributor 14, the dope distributor 12 and steam speedup distributor 14 are arranged on pre-crystallizer
In tank body, the steam speedup distributor includes distribution of steam disk 17, diffusion velocity hooster 15 and threeway connection end, the diffusion
The top connection distribution of steam disk of velocity hooster, the lower section connecting tee of the diffusion velocity hooster connect rank end.The dope distributor
12 is bigger than the perforate of common material distributor, and opening diameter is in φ 38, while dope distributor 12 is and pre-crystallizer tank body
What 13 inwalls overlapped；Steam speedup distributor is by threeway connection end 16, diffusion velocity hooster 15 and distribution of steam disk 17
Composition, wherein depending on the size of the length of diffusion velocity hooster 15 and inclination angle according to pre-crystallizer 7, threeway connection end 16 except even
Connect outside diffusion velocity hooster 15 and steam inlet pipe line, lower end condensate can also be discharged in time.Remaining structure and advantage are complete with embodiment
It is exactly the same.
Embodiment 3：
Referring to Fig. 1, Fig. 2, used as a kind of improvement of the present utility model, the crystallization apparatus also include vacuum pump 10 and pond
11, the vacuum pump is used for the vacuum for maintaining whole device, connects one end of condenser by pipeline.The vacuum master of system
To be maintained by vacuum pump 10, and the vacuum of low-pressure superheated steam system is adjusted by external vacuum pump system, it is low in principle
The vacuum for pressing through the system of vapourss is bigger than the vacuum of evaporation and crystallization system.Remaining structure and advantage are complete with embodiment
It is identical.
Embodiment 4：
Referring to Fig. 1, Fig. 2, a kind of low-pressure superheated steam assisted evaporative crystallization processes, the technique are as follows：1）Material is from thing
Material pump 1 is preheated in preheater 2, and preheating temperature is determined according to material characteristic and evaporation requirement, the material after preheating
Into in falling film evaporator 5, the low-pressure saturated steam that now low-pressure steam generator 3 is produced becomes after the heat exchange of heat exchanger 4
Into low-pressure superheated steam, pre-crystallizer 7 is entered by steam speedup distributor, the low area overheat that high speed is formed in pre-crystallizer steams
Steam flow；During the temperature that detected by the temperature sensor in pre-crystallizer controlling the big of 4 hot and cold water effluent amount of heat exchanger
It is little so as to which that it is the superheated steam at a temperature of formulating to meet low-pressure steam in into steam speedup distributor.
2）After material completes evaporation and heat-exchange in falling film evaporator 5, squeezed in pre-crystallizer 7 by dope delivery pump 6, profit
With dope distributor cloth liquid, counter current contacting heat exchange is now formed with internal flow of superheated steam, further goes out to fall the water in dope
Point, material enters crystallization in crystallizer 8 and separates out afterwards；
3）The indirect steam produced in pre-crystallizer 7 is changed into condensed water discharge after the heat exchange of condenser 9, for
After this indirect steam being processed in the less operating mode of material clamp band in indirect steam, squeeze in low-pressure steam generator 3, this
Sample can just save the power consumption that heating in water bath produces low-pressure saturated steam.
Operation principle：Referring to Fig. 1-Fig. 4, a kind of low-pressure superheated steam assisted evaporative crystallization apparatus, the vacuum of the system
It is main by vacuum pump 10 maintaining, and the vacuum of low-pressure superheated steam system is adjusted by external vacuum pump system, in principle
The vacuum of the system of low-pressure superheated steam is bigger than the vacuum of evaporation and crystallization system；Temperature parameter in this utility model technique
It is critical that, be passed through in pre-crystallizer low-pressure superheated steam temperature depend entirely on dope temperature and system vacuum
Degree, therefore, in actual motion, suitable temperature should be selected according to concrete operating mode, such pre-crystallizer can be only achieved technique will
Ask；Low-pressure saturated steam generator is produced in a water bath, thus using evaporation and crystallization system preheating to water bath device
Heated, reached the effect of efficient utilization waste heat, while the superheated steam in the pre-crystallizer in this utility model technique point
The resistance that the dope that cloth device takes into full account is produced to which, optimizes the structure of itself, changes beneficial to the contact inside pre-crystallizer
The carrying out of heat.
At least one of technical characteristic described in embodiment 2,3 can also be combined to be formed with embodiment 1 by this utility model
New embodiment.
It should be noted that above-described embodiment is only preferred embodiment of the present utility model, not for limiting this
The protection domain of utility model, the equivalent made on the basis of above-mentioned technical proposal or replacement, belong to practical
New protection domain.
Claims (4)
1. a kind of low-pressure superheated steam assisted evaporative crystallization apparatus, it is characterised in that the crystallization apparatus include product pump, material
Preheater, low-pressure steam generator, heat exchanger, falling film evaporator, dope delivery pump, pre-crystallizer, crystallizer and condenser,
The material preheater is arranged between product pump and falling film evaporator, is connected by pipeline, and the heat exchanger is arranged on low pressure
Between steam generator and pre-crystallizer, the pre-crystallizer connects condenser by pipeline, and the dope delivery pump is arranged on
Between falling film evaporator and pre-crystallizer, the pre-crystallizer connects crystallizer by pipeline.
2. a kind of low-pressure superheated steam assisted evaporative crystallization apparatus according to claim 1, it is characterised in that the pre- knot
Brilliant device includes pre-crystallizer tank body, dope distributor and steam speedup distributor, the dope distributor and the distribution of steam speedup
Device is arranged in pre-crystallizer tank body.
3. a kind of low-pressure superheated steam assisted evaporative crystallization apparatus according to claim 2, it is characterised in that the crystallization
Device also includes vacuum pump and pond, and the vacuum pump is used for the vacuum for maintaining whole device, connects condenser by pipeline
One end.
4. a kind of low-pressure superheated steam assisted evaporative crystallization apparatus according to claim 2, it is characterised in that the steam
Speedup distributor includes distribution of steam disk, diffusion velocity hooster and threeway connection end, and the top connection of the diffusion velocity hooster is steamed
Vapour distributing disc, the lower section connecting tee of the diffusion velocity hooster connect rank end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620966559.4U CN206045463U (en) | 2016-08-29 | 2016-08-29 | Low-pressure superheated steam assisted evaporative crystallization apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620966559.4U CN206045463U (en) | 2016-08-29 | 2016-08-29 | Low-pressure superheated steam assisted evaporative crystallization apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206045463U true CN206045463U (en) | 2017-03-29 |
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| CN201620966559.4U Expired - Fee Related CN206045463U (en) | 2016-08-29 | 2016-08-29 | Low-pressure superheated steam assisted evaporative crystallization apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422396A (en) * | 2016-08-29 | 2017-02-22 | 江苏沃德托普热力科技有限公司 | Low-pressure superheated steam-assisted evaporative crystallization device and process |
-
2016
- 2016-08-29 CN CN201620966559.4U patent/CN206045463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422396A (en) * | 2016-08-29 | 2017-02-22 | 江苏沃德托普热力科技有限公司 | Low-pressure superheated steam-assisted evaporative crystallization device and process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |