CN202983275U - Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic - Google Patents
Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic Download PDFInfo
- Publication number
- CN202983275U CN202983275U CN2012206334888U CN201220633488U CN202983275U CN 202983275 U CN202983275 U CN 202983275U CN 2012206334888 U CN2012206334888 U CN 2012206334888U CN 201220633488 U CN201220633488 U CN 201220633488U CN 202983275 U CN202983275 U CN 202983275U
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- vacuum
- dtb
- cylinder
- port
- 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 - Fee Related
Links
Images
Abstract
The utility model discloses a vacuum crystallizer with a DTB (Drabt Tube Babbled) characteristic. The vacuum crystallizer is composed of a crystallizer outer cylinder, a crystallizer inner cylinder, a flow guide cylinder and a mixer, wherein a vacuum port is arranged at the top part of the crystallizer outer cylinder; a fine crystal removal port and a feeding port are arranged at the sidewalls of the crystallizer outer cylinder; an evaporation arc plate is arranged at the top part of the crystallizer inner cylinder; a spraying port is arranged at the upper part of the evaporation arc plate; and the flow guide cylinder and the mixer are arranged at the lower part of the crystallizer inner cylinder. An elutriation cylinder is arranged at the bottom of the crystallizer; a discharge port and an emptying port (turbulence flow port) are respectively arranged at the side surface and the bottom part of the elutriation cylinder; crystal magma in the crystallizer is divided into a rapid growth region, a slow growth region and a crystal gathering region from the upside to the downside; and the slow growth region is provided with a circulating pump inlet which is connected to the spraying port through a circulating pipeline and a circulating pump. The vacuum crystallizer with the DTB characteristic combines the traditional DTB type crystallizer having excellent performances with the vacuum cooling way perfectly, is applicable for materials which obtains a plenty of crystals through cooling, has the viscosity of the solution increased obviously along with the increase of the concentration, and has relatively low rising of the boiling point.
Description
Technical field
The utility model belongs to the crystallization technique field, is specifically related to a kind of vacuum crystallizer of the DTB of having characteristic.
Background technology
Crystallization is one of basic unit operations of chemical industry, and it can make the product height pure, and particle is neat, so be widely adopted.Method for crystallising mainly contains crystallisation by cooling, evaporative crystallization and reactive crystallization etc., and commonly used is the above two.And crystallizer is the crystallization apparatus that designs according to the crystallization the whole bag of tricks, from batch (-type) natural cooling crystallization device large automatic crystallization apparatus till now the earliest, is all in order to control rational degree of supersaturation, solution circulation etc.
DTB type crystallizer is a kind of internal circulation crystallizer for crystal slurry, forms circulation canal by inner draft tube, and the introduction that is applicable to evaporative crystallization and crystallisation by cooling method is arranged.The slurry outside circulation partition type of cooling wherein easily produces serious crystal wall built-up and fouling at the heat exchanger tube inside and outside wall, hinders the continuous and steady operation of system.
The main method for crystallising of Oslo type crystallizer is the vacuum cool-down crystallization, can obtain the good crystal product of grading.Be divided into mother liquid circulation and magma is circulating according to the mode of circulation, and crystallizer bottom crystal relies on the fluidised form of gravity Natural Circulation to be difficult in practice control.Patent CN201906482U, patent CN201643772U, patent CN201701781U etc. propose suitable vacuum crystallizing equipment, but with the report that do not have of DTB type crystallizer and the combination of vacuum crystallization method.
Summary of the invention
But the purpose of this utility model is for some decrease temperature crystallines, and the viscosity of solution is developed a kind of vacuum crystallizer of the DTB of having characteristic with the material that the concentration increase enlarges markedly.Overcome the heat exchanging pipe wall scale formation that traditional partition condenser cooling causes, avoid vacuum cool-down crystallization cooling violent, crystal grain is little, the magma chaos state.
The technical solution of the utility model is: a kind of vacuum crystallizer with DTB characteristic, by the crystallizer urceolus, the crystallizer inner core, guide shell, agitator form, and are provided with vacuum port at crystallizer urceolus top, be provided with thin brilliant mouth and the charging aperture eliminated at the crystallizer outer tube side wall, be provided with evaporation arc plate at crystallizer inner core top, be provided with mouth spray on evaporation arc plate top, be provided with guide shell and agitator in crystallizer inner core bottom.
Be provided with bottom crystallizer and eluriate cylinder, eluriate cylinder side and bottom and be respectively equipped with discharge gate and drain (turbulent flow mouth), magma is divided into Fast Growth district, slow growth district and crystal enrichment region from top to bottom in crystallizer, the district is provided with pump entry at slow growth, is connected with mouth spray with circulating pump by circulating line.
The function of crystallizer inner core as above evaporation arc plate, mouth spray is, magma is evenly distributed on smooth evaporation arc plate surface, makes the degree of supersaturation of solution by solvent evaporative cooling and inspissation, and oversaturated solution flows into the rapid growth of crystal district.
The function of the annular region that crystallizer inner core as above and crystallizer urceolus form is that crystal along with the growth of crystal, progresses into the slow growth district of bottom at the highest regional Fast Growth of this degree of supersaturation.
The function of the circular passage between guide shell as above and crystallizer urceolus is, suspension is under the promotion of the screw of agitator, rise to liquid-covered in cylinder, then turn to the below, flow to along the circular passage between guide shell and crystallizer urceolus bottom guide shell, be inhaled into heavily again the lower end of guide shell, so circulation endlessly, forms the condition that the well-crystallized mixes.
The function of eluriating cylinder as above is, to obtain the crystal grain of suitable size and suitable crystal size scope by regulating suitable elutriation mouth flow.
As above by pump entry, circulating pump, the function that is connected to mouth spray by circulating line is, the dissection of circulating pump impeller, generated a certain amount of nucleus (secondary nucleation), for crystallizer inner core napex evaporation arc plate zone provides the core that consumes degree of supersaturation, that has avoided that first nucleation causes is a large amount of thin brilliant.
The beneficial effects of the utility model are, by design DTB variant unit in vacuum crystallizer, with traditional DTB type crystallizer and the perfect fusion of vacuum cool-down mode of function admirable.Utilize the vacuum cool-down mode without cold and hot heat exchange surface, the less scaling and good characteristics such as magma subregion effect in DTB unit.And the defective that the magma endless form of outer circulation pump has avoided traditional DTB Recycling Mother Solution to yield poorly, the design of the simultaneously dimensionally-optimised design of crystallizer inner core and urceolus and DTB unit, also made up traditional vacuum crystallizer discharge difficult, crystal is less, and crystal size is without shortcomings such as yielding poorly of causing of classification.
This crystallizer is applicable to and can obtains a large amount of crystal by cooling, and the viscosity of solution increases with concentration and enlarge markedly, and the less material of the elevation of boiling point, as the inorganic salts of the similar performances such as magnesium sulfate.
Description of drawings
Below in conjunction with drawings and the embodiments, the utility model is further described.
Fig. 1 is a kind of vacuum crystallizer organigram of the DTB of having characteristic.
In figure: 1-mouth spray, 2-evaporation arc plate, 3-crystallizer inner core, 4-guide shell, 5-agitator, 6-are eluriated tin, 7-circulating line, 8-circulating pump, 9-Fast Growth district, 10-slow growth district, 11-crystal enrichment region, 12-crystallizer urceolus.The a-vacuum port, thin brilliant mouth, c-discharge gate, d-pump entry, e-drain (turbulent flow mouth), the charging aperture f of eliminating of b-
The specific embodiment
As shown in Figure 1, a kind of vacuum crystallizer with DTB characteristic comprises crystallizer urceolus (body) 12 and crystallizer inner core 3.Be provided with vacuum port a at crystallizer urceolus napex, be provided with thin brilliant mouthful b and the charging aperture f of eliminating at the crystallizer outer tube side wall, be provided with evaporation arc plate 2 at crystallizer inner core 3 tops, be provided with mouth spray 1 on evaporation arc plate 2 tops, be provided with guide shell 4 and agitator 5 in crystallizer inner core 3 bottoms, agitator 5 is fixed in crystallizer inner core 3 bottom wall.
Be provided with bottom crystallizer and eluriate cylinder 6, eluriate cylinder side and bottom and be respectively equipped with discharge gate c and drain (turbulent flow mouth) e.Magma is divided into Fast Growth district 9, slow growth district 10 and crystal enrichment region 11 from top to bottom in crystallizer, and 10 are provided with pump entry d in the slow growth district, are connected with mouth spray 1 with circulating pump 8 by circulating line 7.
method of work of the present utility model is: vacuum plant is connected with crystallizer top vacuum port a, crystallizer is vacuumized cooling, the crystallizer bottom has the magma of certain crystalline density and discharges by pump entry d, deliver to mouth spray 1 through circulating pump 8 and circulating line 7, be evenly distributed on smooth evaporation arc plate surface from the magma of mouth spray 1 ejection, make the degree of supersaturation of solution by solvent evaporative cooling and inspissation, oversaturated solution inflow rapid growth of crystal district 9, crystal is at the highest regional Fast Growth of this degree of supersaturation, growth along with crystal, progress into the slow growth district 10 of bottom.In DTB variant unit zone, suspension is under the promotion of screw, rise to the feed liquid top layer in cylinder, then turn to the below, flow to along the circular passage between guide shell and crystallizer urceolus bottom guide shell, be inhaled into again the lower end of guide shell, so circulation, form near good mixing condition, crystal flows downward, clear liquid rises by the zone between crystallizer urceolus and inner core, can pass through thin brilliant mouthful regular discharge of eliminating, and this has been avoided the magma state of traditional vacuum decrease temperature crystalline mode " a pot of porridge " formula.Control by rational crystallizer inner core design and solution level, both guaranteed the high-efficiency evaporating of crystallizer inner core top solution, avoided again the disturbance of vacuum to the DTB variant unit, solution vertically is being the distribution of high-speed rapid growth and slow growth, DTB variant unit and crystallizer inner core is well moved separately can act synergistically preferably again.
Simultaneously, be provided with in crystallizer bottom and eluriate cylinder 6, enter the crystal enrichment region from the crystal of certain particle diameter of slow growth district's sedimentation, can guarantee certain crystal size scope.Drain (turbulent flow mouth) e is arranged on and eluriates bottom leg, can draw self-circulating pump and export branch, obtains the crystal grain of suitable size and suitable crystal size scope by regulating suitable elutriation mouth flow.The crystal particle diameter in slow growth district is moderate, this regional crystal growth motive force is less, extract a certain proportion of magma out by pump entry d and participate in vacuum cool-down, dissection due to circulating pump impeller, generated a certain amount of nucleus (secondary nucleation), the core that consumes degree of supersaturation is provided for crystallizer inner core evaporated on top arc plate zone, and that has avoided that first nucleation causes is a large amount of thin brilliant.At last, when crystal enrichment region magma satisfies suitable condition, just can discharge crystallizer, obtain product.
Claims (3)
1. vacuum crystallizer with DTB characteristic, by the crystallizer urceolus, the crystallizer inner core, guide shell, agitator forms, it is characterized in that, be provided with vacuum port at crystallizer urceolus top, be provided with thin brilliant the elimination mouthful and charging aperture at the crystallizer outer tube side wall, be provided with evaporation arc plate at crystallizer inner core top, be provided with mouth spray on evaporation arc plate top, be provided with guide shell and agitator in crystallizer inner core bottom.
2. a kind of vacuum crystallizer with DTB characteristic according to claim 1, is characterized in that: be provided with bottom crystallizer and eluriate cylinder, eluriate cylinder side and bottom and be respectively equipped with discharge gate and drain.
3. a kind of vacuum crystallizer with DTB characteristic according to claim 1, it is characterized in that: magma is divided into Fast Growth district, slow growth district and crystal enrichment region from top to bottom in crystallizer, the district is provided with pump entry at slow growth, is connected with mouth spray with circulating pump by circulating line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206334888U CN202983275U (en) | 2012-11-22 | 2012-11-22 | Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206334888U CN202983275U (en) | 2012-11-22 | 2012-11-22 | Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202983275U true CN202983275U (en) | 2013-06-12 |
Family
ID=48554501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206334888U Expired - Fee Related CN202983275U (en) | 2012-11-22 | 2012-11-22 | Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202983275U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664521A (en) * | 2016-02-25 | 2016-06-15 | 多氟多化工股份有限公司 | Dynamic crystallization equipment and dynamic crystallization method |
| EP3246310A4 (en) * | 2015-02-12 | 2018-01-10 | Shandong Nhu Amino Acid Co., Ltd. | Method for continuous preparation of high bulk density methionine crystal |
| CN109173329A (en) * | 2018-10-31 | 2019-01-11 | 浙江新和成股份有限公司 | Device for evaporative crystallization |
| CN109847677A (en) * | 2017-11-30 | 2019-06-07 | 格林美股份有限公司 | It is used to prepare the reaction unit of big specific gravity and bulky grain crystal |
| CN113134249A (en) * | 2021-03-22 | 2021-07-20 | 西安航天华威化工生物工程有限公司 | Sugar alcohol solution pre-crystallization equipment and process |
-
2012
- 2012-11-22 CN CN2012206334888U patent/CN202983275U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3246310A4 (en) * | 2015-02-12 | 2018-01-10 | Shandong Nhu Amino Acid Co., Ltd. | Method for continuous preparation of high bulk density methionine crystal |
| US10293273B2 (en) | 2015-02-12 | 2019-05-21 | Shandong Nhu Amino Acid Co. Ltd. | Method for continuous preparation of high bulk density methionine crystal |
| CN105664521A (en) * | 2016-02-25 | 2016-06-15 | 多氟多化工股份有限公司 | Dynamic crystallization equipment and dynamic crystallization method |
| CN105664521B (en) * | 2016-02-25 | 2018-10-16 | 多氟多化工股份有限公司 | A kind of dynamic crystallization equipment and dynamic crystallization method |
| CN109847677A (en) * | 2017-11-30 | 2019-06-07 | 格林美股份有限公司 | It is used to prepare the reaction unit of big specific gravity and bulky grain crystal |
| CN109173329A (en) * | 2018-10-31 | 2019-01-11 | 浙江新和成股份有限公司 | Device for evaporative crystallization |
| CN109173329B (en) * | 2018-10-31 | 2023-08-29 | 浙江新和成股份有限公司 | Device for evaporative crystallization |
| CN113134249A (en) * | 2021-03-22 | 2021-07-20 | 西安航天华威化工生物工程有限公司 | Sugar alcohol solution pre-crystallization equipment and process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202983275U (en) | Vacuum crystallizer with DTB (Drabt Tube Babbled) characteristic | |
| CN103071310B (en) | Evaporating crystallizer | |
| CN104162288B (en) | A kind of spiral-flow type fluidized-bed crystallizer | |
| CN206518915U (en) | Force interior circulation crystallizer | |
| CN102674399B (en) | Two-effect scale-preventing evaporating and crystallizing device used for evaporating sodium chloride solution and operation method | |
| CN101129206B (en) | Device for separating ice and crystal | |
| CN202155070U (en) | External-circulation evaporation crystallizer | |
| CN201701781U (en) | Vacuum flash evaporation mould | |
| CN102940975A (en) | Crystallization kettle | |
| CN201182916Y (en) | Irrotational impact-flow heat exchange type crystallizer | |
| CN110237558A (en) | A kind of integrated crystallization apparatus and method for crystallising with continuous fine crystal elimination circulation | |
| CN204490537U (en) | For the evaporative crystallizer of high slat-containing wastewater | |
| CN202654750U (en) | Crystal mush double-circulation crystallizer for preparing magnesium sulfate heptahydrate | |
| CN204841004U (en) | Continuous crystallization equipment of phosphate | |
| CN201020297Y (en) | No-rotation impact flow vacuum crystallizer | |
| CN208591557U (en) | It is condensed falling film evaporator | |
| CN204034311U (en) | A kind of spiral-flow type fluidized-bed crystallizer | |
| CN208776605U (en) | High-purity p-methyl phenol system for separating and purifying | |
| CN202983276U (en) | Rotational flow crystallizer for manufacturing magnesium sulfate heptahydrate | |
| CN206167978U (en) | Continuous type crystallizer | |
| CN203724806U (en) | Crystallizer suitable for crystallizing magnesium sulfate solution | |
| CN215462140U (en) | High-efficient solution crystallizer | |
| CN106390506B (en) | A kind of continous way crystallizer | |
| CN206167977U (en) | Crystallizer | |
| CN206577413U (en) | A kind of menthol crystal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200908 Granted publication date: 20130612 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220908 Granted publication date: 20130612 |
|
| 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: 20130612 |