CN202155067U - Improved DTB (draft-tube and baffle) type crystallizer - Google Patents
Improved DTB (draft-tube and baffle) type crystallizer Download PDFInfo
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- CN202155067U CN202155067U CN2011201946648U CN201120194664U CN202155067U CN 202155067 U CN202155067 U CN 202155067U CN 2011201946648 U CN2011201946648 U CN 2011201946648U CN 201120194664 U CN201120194664 U CN 201120194664U CN 202155067 U CN202155067 U CN 202155067U
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- crystallizer
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- dtb
- guide shell
- reduced
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- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 abstract description 16
- 230000008025 crystallization Effects 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 3
- 231100000817 safety factor Toxicity 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 3
- 239000012267 brine Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of chemical equipment, and relates to an improved DTB (draft-tube and baffle) type crystallizer. The improved DTB type crystallizer is mainly characterized in that a speed reducer and a stirrer of an existing DTB type crystallizer are omitted, a built-in flow guiding barrel is designed into a flow guiding barrel with a cooling jacket, and a cyclone device and a circulation pump are added. The speed reducer is omitted, so that vibration of equipment is reduced, and safety factors are increased. After a seal is removed, leakage is reduced, vacuum degree is improved, and stable production is realized. The stirrer is omitted, materials are circulated in the crystallizer by the circulation pump, and greasy dirt outside a machine seal is prevented from entering the crystallizer to pollute crystallization products. The improved DTB type crystallizer is particular suitable for crystallizing poisonous solvent or inflammable and explosive solvent, the flow guiding barrel is designed into a double-layered structure with the cooling jacket, cooling water is led into the double-layered structure, so that the temperature can be reduced fast, and production efficiency is improved. In addition, after the speed reducer and the stirrer are omitted, halt repair time of the crystallizer is reduced by 10% to 15% compared with the existing crystallizer.
Description
Technical field
The utility model belongs to technical field of chemical, is specifically related to a kind of improved DTB type crystallizer.
Background technology
The process that solute is separated out from solution is called crystallization.Crystallization is through cooling or removes partial solvent and realize.In crystallization process, can be divided into nucleus generates and two stages of crystal growth.Crystallization processes is being widely used aspect chemical industry, pharmacy, food, the brine waste processing.
In commercial production, mainly be to realize this purpose through crystallizer, obtain being fit to the crystal product of requirement.The kind of crystallizer is a lot, uses the wider DTB type that remains crystallizer at present.
At present, DTB type crystallization commonly used belongs to typical internal circulation crystallizer for crystal slurry; Its structure owing at crystallizer inner draft tube is set, has formed circulation canal shown in accompanying drawing 1; Suitable stirring make magma have the good mixing condition, as long as just can make crystallizer realize good interior circulation; Make on each flow section of device and can keep higher flowing velocity, and make magma density in evaporative crystallization, can eliminate boiling degree of super saturation at the interface fast up to 30-40% (weight); Can make the degree of supersaturation of solution be in lower level, be specially adapted to the steeper product of solubility curve.
Through facts have proved that DTB type crystallizer is functional, production intensity is high; Can produce the bigger crystal grain of particle; And be difficult in the crystallizer scabbing, it has become one of principal mode of continuous crystalizer, is applicable to multiple method for crystallising such as vacuum cooled crystallization, evaporative crystallization, reaction method crystallization.
Though present DTB type crystallizer range of application is wider, and some many shortcomings are also arranged:
1), reach certain flowing velocity at crystallizer, need a reductor be installed, so just bring following deficiency on the top of crystallizer in order to make solution: the one, to install not at the center if slow down, crystallizer can produce vibrations.
2), seepage can appear in seals at, if oil seepage in crystallizer, is understood polluted product, also can influence vacuum simultaneously, does not reach the output requirement.
3),, just can not make solution in crystallization, form good interior circulation if agitator design is unreasonable or processing does not reach required precision.
4), the solubility with temperature of some crystalline products changes and changes, if only lean on vacuum, still can not reach the purpose of cooling the soonest, and existing crystallizer self does not have supporting cooling device.
Summary of the invention
The purpose of the utility model is the shortcoming to existing DTB type crystallizer, and a kind of improved DTB type crystallizer that proposes.
DTB type crystallizer after the utility model improves has been removed the reductor and the agitating device on existing DTB type crystallizer top, and guide shell is designed to the guide shell with cooling jacket, installs swirl-flow devices and EGR additional.
The main technical schemes of the utility model: DTB type crystallizer, mainly comprise the crystallizer housing, housing top is provided with vacuum port and subsequent use mouth; Side is provided with manhole, temperature-measuring port, overfall, baffling tube and visor, and lower housing portion is provided with charging aperture, discharging opening and manhole, the built-in guide shell of housing; It is characterized in that guide shell is the guide shell of band cooling jacket; Cooling jacket connects cooling water outlet and inlet, and swirl-flow devices is arranged at guide shell top, and the cycle stock import is arranged at the guide shell bottom; Lower housing portion has the cycle stock outlet, and the circulating pump of housing peripheral hardware connects cycle stock and imports and exports.
The workflow of the utility model is: material gets into crystallizer through charging aperture; Circulating pump is extracted material out from the cycle stock outlet; Deliver to the guide shell in the crystallizer through the cycle stock charging aperture again through circulating pump; Through swirl-flow devices, evaporate on crystallizer top, indirect steam connects vavuum pump by vacuum port and extracts out.Material after the evaporation is fallen by the baffling tube again, and the supersaturation material that contains crystal is discharged by discharging opening, gets into centrifuge and isolates crystal.Solution through low concentration behind the baffling tube is then discharged by overfall.So just accomplished a complete crystallization process.
The advantage of the utility model:
1) remove reductor, reduced the factor of equipment vibrations, the one, safety coefficient improves, and the 2nd, after the removal sealing, the possibility of the seepage of reduction, the vacuum in the crystallizer just can improve steady production.The 3rd, owing to removed agitator, material circulates in crystallization and by circulating pump power is provided, and has guaranteed circulation rate and distribution effect.
2) adopt circulating pump to material in the crystallizer inner loop; Avoid the outer greasy dirt of machine envelope to get into and pollute crystalline product in the crystallization; Simultaneously because circulating pump is an inner loop, can not produce seepage and influence vacuum, be particularly suitable for containing the product crystallization in poisonous molten Ji or the inflammable and explosive molten Ji.
3) guide shell is designed to the double-decker with cooling jacket, the middle cooling water that feeds can fast cooling, improves the rate that comes into force.
4) owing to removed reductor and agitator, crystallizer stops maintenance time than the 10-15 of crystallizer minimizing in the past ﹪.
Description of drawings:Accompanying drawing 1 is existing DTB type structure of mould sketch map; Accompanying drawing 2 is the structural representation of the utility model embodiment.
In the accompanying drawing, the 1-reductor; 2-baffling tube; The 3-guide shell; The 4-agitator; The 5-swirl-flow devices; The 6-circulating pump; The a-vacuum port; Subsequent use mouthful of b-; C1, c2-visor; D-top manhole; The e-temperature-measuring port; The f-overfall; The g-coolant outlet; The h-charging aperture; The i-cooling water inlet; The j-discharging opening; The import of k-cycle stock; The outlet of l-cycle stock; M-bottom manhole.
The specific embodiment:Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment
The utility model embodiment is shown in accompanying drawing 2; Mainly comprise the crystallizer housing; Housing top is provided with vacuum port a and subsequent use mouthful of b; Side is provided with top manhole d, temperature-measuring port e, overfall f, baffling tube 2 and visor c1, c2, and lower housing portion is provided with charging aperture h, discharging opening j and bottom manhole m, the built-in guide shell 3 of housing.Present embodiment mainly is a reductor 1 and agitator 4 of having removed existing DTB type crystallizer shown in accompanying drawing 1; The main improvement is that guide shell 3 is designed to the guide shell 3 with cooling jacket; Cooling jacket connects cooling water outlet and inlet i, g, and guide shell 3 tops are provided with swirl-flow devices 5, and guide shell 3 bottoms are provided with cycle stock import k; Lower housing portion is provided with cycle stock outlet l, and the circulating pump 6 of housing peripheral hardware connects cycle stock and imports and exports k, l.
The workflow of present embodiment is: material gets into crystallizer through charging aperture h; Circulating pump 6 is extracted material out from cycle stock outlet l; Deliver to the guide shell 3 in the crystallizer through cycle stock charging aperture k again through circulating pump 6; Through swirl-flow devices 5, evaporate on crystallizer top, indirect steam connects vavuum pump by vacuum port a and extracts out.Material after the evaporation is fallen by baffling tube 2 again, and the supersaturation material that contains crystal is discharged by discharging opening j, gets into centrifuge and isolates crystal.Solution through baffling tube 2 back low concentrations is then discharged by overfall f, has so just accomplished a complete crystallization process.
DTB crystallizer after present embodiment improves is obtained good effect in evaporating concentration process.Special in the fields such as desulfurization of present environmental protection industry (epi) such as brine waste processing, power plant and steel mill, have application promise in clinical practice.
Claims (1)
1. an improved DTB type crystallizer mainly comprises the crystallizer housing, and housing top is provided with vacuum port and subsequent use mouth; Side is provided with manhole, temperature-measuring port, overfall, baffling tube and visor, and lower housing portion is provided with charging aperture, discharging opening and manhole, the built-in guide shell of housing; It is characterized in that guide shell is the guide shell of band cooling jacket; Cooling jacket connects cooling water outlet and inlet, and swirl-flow devices is arranged at guide shell top, and the cycle stock import is arranged at the guide shell bottom; Lower housing portion has the cycle stock outlet, and the circulating pump of housing peripheral hardware connects cycle stock and imports and exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201946648U CN202155067U (en) | 2011-06-10 | 2011-06-10 | Improved DTB (draft-tube and baffle) type crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201946648U CN202155067U (en) | 2011-06-10 | 2011-06-10 | Improved DTB (draft-tube and baffle) type crystallizer |
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| Publication Number | Publication Date |
|---|---|
| CN202155067U true CN202155067U (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201946648U Expired - Fee Related CN202155067U (en) | 2011-06-10 | 2011-06-10 | Improved DTB (draft-tube and baffle) type crystallizer |
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| CN (1) | CN202155067U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073030A (en) * | 2013-02-01 | 2013-05-01 | 青海盐湖工业股份有限公司 | Crystallizer for hydrolyzing carnallite |
| CN104071761A (en) * | 2014-05-12 | 2014-10-01 | 江苏大明科技有限公司 | Continuous crystallizing and centrifuging system for producing phosphorous acid |
| CN104445288A (en) * | 2014-12-02 | 2015-03-25 | 成都华西堂投资有限公司 | Sodium hydrogen carbonate reaction crystallizer |
| CN106390506A (en) * | 2016-10-18 | 2017-02-15 | 阿坝州高远锂电材料有限公司 | Continuous crystallizer |
| CN111186854A (en) * | 2018-11-14 | 2020-05-22 | 山西卓联锐科科技有限公司 | Method for automatically and intermittently controlling size of zinc sulfate heptahydrate crystal particles |
-
2011
- 2011-06-10 CN CN2011201946648U patent/CN202155067U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073030A (en) * | 2013-02-01 | 2013-05-01 | 青海盐湖工业股份有限公司 | Crystallizer for hydrolyzing carnallite |
| CN103073030B (en) * | 2013-02-01 | 2014-05-07 | 青海盐湖工业股份有限公司 | Crystallizer for hydrolyzing carnallite |
| CN104071761A (en) * | 2014-05-12 | 2014-10-01 | 江苏大明科技有限公司 | Continuous crystallizing and centrifuging system for producing phosphorous acid |
| CN104445288A (en) * | 2014-12-02 | 2015-03-25 | 成都华西堂投资有限公司 | Sodium hydrogen carbonate reaction crystallizer |
| CN104445288B (en) * | 2014-12-02 | 2017-03-08 | 成都华西堂投资有限公司 | A kind of reaction of sodium bicarbonate crystallizer |
| CN106390506A (en) * | 2016-10-18 | 2017-02-15 | 阿坝州高远锂电材料有限公司 | Continuous crystallizer |
| CN111186854A (en) * | 2018-11-14 | 2020-05-22 | 山西卓联锐科科技有限公司 | Method for automatically and intermittently controlling size of zinc sulfate heptahydrate crystal particles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20150610 |
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| EXPY | Termination of patent right or utility model |