CN206167978U - Continuous type crystallizer - Google Patents

Abstract

The utility model discloses a continuous type crystallizer belongs to crystallization equipment field, provides a continuous type crystallizer who can be effectively goes on separating to the crystallization granule that mix with in the solution after trading heat pipe heat exchange, include from last consecutive last cavity, heat transfer room and crystallization chamber extremely down, still include honeycomb duct and division board, the division board sets up indoorly at the epicoele, and the separation chamber that the cavity was split into the top cavity that lies in the top and was lain in the below will be gone up to the division board, be provided with the inclined through hole who runs through the pipe wall on the pipe wall of the honeycomb duct that lies in separation chamber, and inclined through hole's trend is for the pipe wall wall thickness direction slope that corresponds the department. The utility model discloses a set up division board and corresponding inclined through hole structure, can make solution form the whirl state in the honeycomb duct, and can realize separating effectively the crystallization granule that carries in this part solution through the whirl.

Description

A kind of continuous way crystallizer

Technical field

This utility model is related to crystallizer field, more particularly to a kind of continuous way crystallizer.

Background technology

Crystallizer is a kind of equipment for product crystallization operation, is generally divided into crystallizing evaporator and cooler crystallizer two Kind.A kind of " interior circulation evaporative crystallization is disclosed in the patent documentation (hereinafter referred to as document 1) of Publication No. CN202155069U Device " (the application is quoted in full in this).Crystallizer disclosed in the document 1, it is crystallized relative to traditional outer circulation For device, device structure can be simplified, while the power consumption of equipment operation can be reduced greatly, and can be efficiently solved using tradition Outer circulation crystallizer when easily there is crystallization deposition in corresponding pipeline, equipment due to shutdown and cause whole crystallization The problem that equipment cannot be turned back on.But, the crystallizer in above-mentioned document 1 yet suffers from following problem：

1st, the separating effect of the fine crystalline granule to being mingled with the solution Jing after heat exchanger tube heat exchange is poor, causes big portion Crystalline particle is divided to flow in the cylinder of top；

2nd, drive the mechanism stirred to be arranged on the bottom of lower shell, cause the draw operation for crystallizing inconvenient；

3rd, the lower end of guide shell directly rushes at lower shell bottom, and the crystal region for being easily pointed to lower shell bottom causes punching Hit, the crystallization for making deposition is broken up, cause the deposition effect for crystallizing poor, and then affect the crystallized stock quality discharged.

Utility model content

This utility model solve technical problem be to provide it is a kind of can effectively to Jing heat exchanger tube heat exchange after solution in The crystalline particle being mingled with carries out detached continuous way crystallizer.

This utility model solves the technical scheme that its technical problem adopted：A kind of continuous way crystallizer, including from upper Upper chamber, Heat Room and the crystallisation chamber being sequentially connected under；Upper perforated plate is provided between upper chamber and Heat Room, in crystallisation chamber Lower perforated plate is provided with and Heat Room between；Heat exchange interior is provided with heat exchanger tube, and the lower end of heat exchanger tube is through after lower perforated plate Connect with crystallisation chamber, the upper end of heat exchanger tube connects through after upper perforated plate with upper chamber；Also include mozzle, the mozzle is passed through Heat Room, and the upper end of mozzle with upper chamber through connect after upper perforated plate, the lower end of mozzle pass through after lower perforated plate with knot Brilliant room connection, also including demarcation strip, the demarcation strip is arranged in epicoele room, and upper chamber is divided into position by the demarcation strip In the top chamber and underlying split cavity of top, the upper end of the heat exchanger tube connects through after upper perforated plate with split cavity Logical, the upper end of the mozzle connects through after demarcation strip with top chamber；In the tube wall of the mozzle in split cavity On be provided through the oblique through hole of tube wall, and the trend of the oblique through hole is inclined relative to the pipe wall thickness direction of corresponding position Tiltedly.

It is further：The oblique through hole be provided with it is multiple, and multiple oblique through holes along mozzle it is circumferential Even distribution, the trend of the plurality of oblique through hole is consistent relative to the incline direction in the pipe wall thickness direction of corresponding position.

It is further：It is corresponding with each oblique through hole to be provided with an extension tube on the outside of the tube wall of mozzle, it is described Extension tube is connected with corresponding oblique through hole, and the trend of extension tube is consistent with the trend of corresponding oblique through hole.

It is further：The trend of the oblique through hole from the outside wall surface of mozzle between internal face to incline obliquely Arrange, and its angle of inclination is θ, there is 0 ＜ θ≤30 °.

It is further：θ=10 °.

It is further：The demarcation strip is in the recessed funnel-form in middle part, and the upper end of the mozzle is from demarcation strip The lowest point at center passes.

It is further：The lower end of the mozzle extends downwardly certain distance L after through lower perforated plate；And in water conservancy diversion Baffle plate is provided with the underface certain distance P of the lower end outlet of pipe；Wherein L ＞ 0, P ＞ 0.

It is further：First outlet is provided with the top of top chamber, the bottom of crystallisation chamber is provided with second and is gone out Mouthful, the side of Heat Room is provided with heat exchange media input, the side relative with heat exchange media input is provided with Heat Room Heat exchange media outlet；Also include charging aperture, the charging aperture is connected with crystallisation chamber.

It is further：The continuous way crystallizer is used for condensation-crystallization operation, and the charging aperture is connected by feed pipe The medium position of mozzle is connected to, and is connected with mozzle.

It is further：Helical-blade is provided with mozzle, the helical-blade passes through rotating shaft and is arranged in upper chamber Side drive mechanism be connected, by the drive mechanism drive helical-blade rotate with order about the liquid in mozzle to Lower flowing；When baffle plate is provided with, the baffle plate is arranged in rotating shaft.

The beneficial effects of the utility model are：This utility model is by arranging demarcation strip and corresponding oblique through hole knot Structure, can make solution form eddy flow state in mozzle, and pass through eddy flow can be by crystalline particle entrained in the part solution Efficiently separated so that most of crystalline particle is settled downwards along mozzle, while so that separate after the stillness of night to upstream Move into top chamber, therefore the separation to crystalline particle can be effectively realized.In addition, by arranging the in the bottom of crystallisation chamber Two outlets, can be more convenient for discharging the material of crystalline portion.In addition, can also avoid from mozzle lower end arranging by arranging baffle plate The liquid for going out is directly impinging the crystallizing field positioned at crystallisation chamber bottom, can improve the crystallization effect of crystallized stock.In addition, by Helical blade is set in mozzle, the downward liquid flow in mozzle can be driven by helical blade, and then whole knot can be improved Liquid circulation rate inside brilliant device, is finally reached the purpose for improving crystalline rate.And crystallizer described in the utility model, The pipeline blockage that can be effectively prevented from being caused due to shutdown even results in the situation generation that equipment cannot start, and also can be big Energy consumption needed for big reduction equipment operation, reaches the effect of energy-saving and emission-reduction.

Description of the drawings

Fig. 1 is a kind of internal structure schematic diagram of continuous way crystallizer specific example described in the utility model；

Fig. 2 is the enlarged diagram of regional area A in Fig. 1；

Fig. 3 is three dimensional structure diagram when mozzle is connected with demarcation strip；

Fig. 4 is the front view of Fig. 3；

Fig. 5 is the sectional view of section B-B in Fig. 4, is provided with extending tubular construction；

Fig. 6 is the sectional view of section B-B in Fig. 4, wherein being not provided with extending tubular construction；

Fig. 7 is the sectional view in C-C sections in Fig. 5；

It is labeled as in figure：Upper chamber 1, Heat Room 2, crystallisation chamber 3, upper perforated plate 4, lower perforated plate 5, heat exchanger tube 6, water conservancy diversion Pipe 7, demarcation strip 8, top chamber 9, split cavity 10, oblique through hole 11, extension tube 12, baffle plate 13, first outlet 14th, second outlet 15, heat exchange media input 16, heat exchange media outlet 17, charging aperture 18, feed pipe 19, helical-blade 20th, rotating shaft 21, drive mechanism 22, paddle 23.

Specific embodiment

This utility model is further illustrated with reference to the accompanying drawings and detailed description.

As shown in fig. 1, a kind of continuous way crystallizer described in the utility model, upper including what is be sequentially connected from top to bottom Chamber 1, Heat Room 2 and crystallisation chamber 3；Upper perforated plate 4 is provided between upper chamber 1 and Heat Room 2, in crystallisation chamber 3 and Heat Room 2 Between be provided with lower perforated plate 5；Be provided with heat exchanger tube 6 in the Heat Room 2, and the lower end of heat exchanger tube 6 through after lower perforated plate 5 with knot Brilliant room 3 connects, and the upper end of heat exchanger tube 6 connects through after upper perforated plate 4 with upper chamber 1；Also include mozzle 7, the mozzle 7 is worn Heat Room 2 is crossed, and the upper end of mozzle 7 connects through after upper perforated plate 4 with upper chamber 1, and the lower end of mozzle 7 passes through lower perforated plate Connect with crystallisation chamber 3 after 5；Also include demarcation strip 8, the demarcation strip 8 is arranged in upper chamber 1, and the demarcation strip 8 will be upper Chamber 1 is divided into top chamber 9 above and underlying split cavity 10, and the upper end of the heat exchanger tube 6 is through upper Connect with split cavity 10 after tube sheet 4, the upper end of the mozzle 7 connects through after demarcation strip 8 with top chamber 9；It is being located at It is provided through the oblique through hole 11 of tube wall on the tube wall of the mozzle 7 in split cavity 10, and the oblique through hole 11 Move towards to be inclined relative to the pipe wall thickness direction of corresponding position.

Crystallizer described in the utility model, is capable of achieving continuous crystallisation operation, needs continuously to crystallization accordingly Stock solution is filled in device, at the same also can continuously or discontinuously discharge crystallization or crystallize dope and it is continuous discharge the stillness of night or Person discharges steam.And crystallizer described in the utility model can be not only used for vaporation-type crystallization operation, and condensing knot is can be used for again Brilliant operation；Wherein, according to the difference of crystallizer operating type, the effect of upper chamber 1 also can change therewith, when this utility model institute When the crystallizer stated is used for vaporation-type crystallization operation, upper chamber 1 will be used as evaporation chamber, the liquid level of solution inside whole crystallizer Will be in upper chamber 1, and solution should be full by the filling such as Heat Room 2, crystallisation chamber 3 and separation chamber 10；Now solution from By being heated after heat exchanger tube 6 in crystallisation chamber 2, the solution after heating most has at last the top entered partly in upper chamber 1 In chamber 9, by evaporation and concentration in top chamber 9, the steam after evaporation is by from the first outlet for being arranged on the top of top chamber 9 14 discharge and can be collected.And when described crystallizer is used for condensing crystallization operation, upper chamber 1 is using as the clarification of clear liquid Room, will be completely filled with inside whole crystallizer by solution；Now solution passes through cooled drop after heat exchanger tube 6 from crystallisation chamber 2 Temperature, the solution after cooling will have in the top chamber 9 for entering partly in upper chamber 1, be located in solution in top chamber 9 Crystalline particle will be settled gradually, and the clear liquid for being located at top will be discharged simultaneously from the first outlet 14 for being arranged on the top of upper chamber 1 Can be collected.

Certainly, crystallizer without loss of generality, in this utility model is needed in upper chamber in order that it can normally run 1 top is provided with corresponding first outlet 14, and the bottom of crystallisation chamber 3 is provided with second outlet 15, in the side of Heat Room 2 Heat exchange media input 16 is provided with, the side relative with heat exchange media input 16 is provided with heat exchange media outlet on Heat Room 2 17；Also need to be provided with charging aperture 18, the charging aperture 18 is connected with crystallisation chamber 3.So, can be to crystallizer by charging aperture 18 Inside continuously add stock solution；By first outlet 14, corresponding clear liquid or steam can be discharged；By second outlet 15, Crystalline solid or crystallization dope can be discharged；By exchanging heat, media input 16 and heat exchange media outlet 17 can be passed through into Heat Room 2 Heat exchange medium, to be exchanged heat with the solution flow through from heat exchanger tube 6.

In addition, according to the difference of crystallizer operating type, when crystallizer is used for condensation-crystallization operation, preferably will be described Charging aperture 18 is connected to the medium position of mozzle 7 by feed pipe 19, and connects with mozzle 7.Referring for example in accompanying drawing 1 It is shown, charging aperture 18 is connected by feed pipe 19 with the mozzle 7 after lower perforated plate 5 is passed through.So arrange benefit be：Make The stock solution that must be added in crystallizer by first with it is cooled after flow back into the part solution in crystallisation chamber 3 from mozzle 7 and mix Close, stock solution can so drained into again in crystallisation chamber after being cooled rapidly to separate out certain crystallization in time carries out certain sedimentation Separate.And when crystallizer is used for evaporative crystallization operation, directly charging aperture 18 can be arranged on the side wall on the top of crystallisation chamber 3, So that stock solution is added directly in crystallisation chamber 3.

In addition, the effect that oblique through hole 11 is arranged in this utility model is so that solution by oblique through hole 11 from mozzle Split cavity 10 outside 7 is flowed in mozzle 7, while forming eddy flow in mozzle 7.Referring to the drawings in 5 or accompanying drawing 6 Shown, the curve with arrow substantially represents the flow line of fluid in figure；Due to the trend of oblique through hole 11 being set to relatively Incline in the pipe wall thickness direction of corresponding position, i.e., trend and the pipe wall thickness direction shape δ at a certain angle of oblique through hole 11, ginseng Shown in accompanying drawing 5, with this so that the trend along oblique through hole 11 is flowed into the liquid of mozzle 7 and will form eddy flow.Certainly, Theoretically for realizing eddy flow effect in the mozzle 7, the value of δ should be between：0 ＜ δ≤90 ° scope, and when the value of δ During the closer to 90 °, then the eddy flow effect for producing under the same terms is better.As being provided with four oblique through holes 11 in Fig. 5, four tiltedly To through hole 11 be located at same cross section on, and four oblique through holes 11 along mozzle 7 circumference it is equal angular be uniformly distributed, The eddy flow for rotating counterclockwise now will be formed in mozzle 7.It is consistent by arranging five incline directions in figure 6 in the same manner Oblique through hole 11, also can form the eddy flow for rotating counterclockwise in mozzle 7.And by forming eddy flow in mozzle 7, then may be used Get rid of what crystalline particle contained in solution was centrifuged near the inwall side of mozzle 7, be then gradually deposited to the knot of bottom In brilliant room 3；And the clear liquid after crystallization is isolated, part is flowed up in top chamber 9 along mozzle 7, another part Then pass back into downwards and circulated again in crystallisation chamber 3.Why having the clear liquid of part will flow up along mozzle 7, be due to Whole crystallizer continuously feeds stock solution by charging aperture 18 to the inside of it, and also it is big to control the addition of stock solution Cause to be equal to the inventory sum discharged from first outlet 14 and second outlet 15, so that the amount of solution inside whole crystallizer Keep stable.

Furthermore, it is contemplated that the wall thickness of mozzle 7 may be relatively thin, therefore only can by eddy flow effect produced by oblique through hole 11 Can not be good, for this purpose, referring to the drawings shown in 5, can be further on the outside of the tube wall of mozzle 7 corresponding with each oblique through hole 11 Be provided with an extension tube 12, the extension tube 12 is connected with corresponding oblique through hole 11, and the trend of extension tube 12 with it is right The trend of the oblique through hole 11 answered is consistent.By arranging extension tube 12, the effect for producing eddy flow can be strengthened, and then improve crystallization Separating effect.The shape of extension tube 12 should be substantially consistent with oblique through hole 11, such as shown in accompanying drawing is both to arrange oblique The cross section of through hole 11 is the gap structure of rectangle, and the cross section of corresponding extension tube 12 is also configured as the rectangle of formed objects Pipe.Certainly, without loss of generality, also extension tube 12 can be arranged on the inside of the tube wall of mozzle 7 or by the entirety of extension tube 12 and be worn Cross the tube wall of mozzle 7.In addition, extension tube 12 also can move towards mode along it is provided with certain crooked radian, as long as ensureing it The final eddy flow effect produced in mozzle 7 can be improved.

In addition, in order to realize that crystalline particle is centrifuged into the effect of " throwing is got rid of " to the lower end of mozzle 7 during eddy flow, so that crystallization Granule can be deposited to preferably downwards in crystallisation chamber 3, referring to the drawings shown in 7, further can walking the oblique through hole 11 To the outside wall surface from mozzle 7 to be obliquely installed obliquely, and when its angle of inclination is θ, typically setting between internal face 0 ＜ θ≤30 ° are equipped with, for example, tilt angle theta=10 ° can be set.In addition, in these cases, when being provided with extension tube 12 When, also the trend of extension tube 12 can be set to move towards consistent inclination conditions with oblique through hole 11.

In addition, in this utility model, the effect that demarcation strip 8 is set be by upper chamber 1 be divided into two it is independent of each other Split cavity 10 and top chamber 9；And consider to be likely to produce a certain amount of crystalline particle in top chamber 9, especially When for evaporative crystallization operation, will also more crystalline particle be separated out in top chamber 9.Therefore, in order that the part knot Brilliant granule can smoothly by being settled down in the crystallisation chamber 3 of bottom after mozzle 7, shown in 3 and accompanying drawing 4, this reality Further the demarcation strip 8 can be set in the recessed funnel-form in middle part with new, and the upper end of the mozzle 7 from point The lowest point at the center of dividing plate 8 passes；Certainly the lowest point that the upper end end face of mozzle 7 should try one's best with funnelform demarcation strip 8 Seamlessly transit, to avoid crystalline particle from piling up in this place.

In addition, referring to the drawings shown in 2, the lower end that can further arrange mozzle 7 extends downwardly after through lower perforated plate 5 Certain distance L, wherein L ＞ 0, the benefit for so arranging is the part solution that can avoid from mozzle 7 flowing in lower crystallization chamber 3 Flow into back up in heat exchanger tube 6 at once again, so that the solution flowed out from mozzle 7 first carries out certain hour in crystallisation chamber 3 Infall process after be upwardly into again in heat exchanger tube 6, so can as far as possible reduce crystalline particle and enter in heat exchanger tube 6.In addition, Also baffle plate 13 can be provided with the underface certain distance P that the lower end of mozzle 7 exports；Wherein P ＞ 0.Baffle plate 13 is set Effect is that the crystalline particle or crystallization dope that the solution flowed out from mozzle 7 can be avoided to be pointed to the bottom deposit of crystallisation chamber 3 is made Into impact, baffle plate 3 can pass through corresponding installation pole and be arranged on the internal face of crystallisation chamber 3 or directly pacified by installing pole It is attached to the bottom of mozzle 7.

In addition, in order to improve the flow effect from the top down of the solution in mozzle 7, further can be in mozzle 7 Helical-blade 20 is inside provided with, the helical-blade 20 is connected by rotating shaft 21 with the transmission of drive mechanism 22 for being arranged on the top of upper chamber 1 Connect, drive helical-blade 20 to rotate to order about the downward liquid flow in mozzle 7 by the drive mechanism 22, with this reality The purpose of existing active drive circulation.And, when baffle plate 13 is provided with, the baffle plate 13 can be directly mounted in rotating shaft 21.Spiral shell The effect of vane 20 is that the downward liquid flow in mozzle 7 is driven by rotation, therefore the rotation direction of helical-blade 20 should be with drive Motivation structure 22 drives its direction for rotating to match, to realize above-mentioned purpose.As for drive mechanism 22, typically can adopt common Motor, can also be provided with corresponding reducing gear in the outfan of drive mechanism 22 in addition, realize driving by reducing gear Deceleration transmission connection between the outfan of motivation structure 22 and rotating shaft 21.

Certainly, without loss of generality, also the bottom of crystallisation chamber 3 can be provided with the paddle 23 of stirring, such as institute in accompanying drawing 1 Show, paddle 23 is arranged on into the top of second outlet 15；The effect of paddle 23 is to play the crystallization to deposition in crystallisation chamber 3 Granule or crystallization dope play slow stirring action, to improve the uniformity of crystalline particle.Certainly, it is provided with drive above-mentioned When motivation structure 22 and rotating shaft 21, above-mentioned paddle 23 can be set directly in rotating shaft 21, and directly can be rotated with rotating shaft 21.

Claims (10)

1. a kind of continuous way crystallizer, including the upper chamber (1), Heat Room (2) and crystallisation chamber (3) that are sequentially connected from top to bottom； Upper perforated plate (4) is provided between upper chamber (1) and Heat Room (2), under being provided between crystallisation chamber (3) and Heat Room (2) Tube sheet (5)；Be provided with heat exchanger tube (6) in the Heat Room (2), and the lower end of heat exchanger tube (6) through lower perforated plate (5) afterwards with crystallization Room (3) connects, and the upper end of heat exchanger tube (6) connects afterwards through upper perforated plate (4) with upper chamber (1)；Also include mozzle (7), it is described Mozzle (7) is connected afterwards through upper perforated plate (4) through Heat Room (2), and the upper end of mozzle (7) with upper chamber (1), water conservancy diversion The lower end of pipe (7) connects afterwards through lower perforated plate (5) with crystallisation chamber (3), it is characterised in that：Also include demarcation strip (8), the separation Plate (8) is arranged in upper chamber (1), and upper chamber (1) is divided into top chamber above by the demarcation strip (8) (9) and underlying split cavity (10), the upper end of the heat exchanger tube (6) through upper perforated plate (4) afterwards with split cavity (10) Connection, the upper end of the mozzle (7) connects afterwards through demarcation strip (8) with top chamber (9)；In split cavity (10) Mozzle (7) tube wall on be provided through the oblique through hole (11) of tube wall, and the oblique through hole (11) moves towards phase For the pipe wall thickness direction of corresponding position inclines.

2. continuous way crystallizer as claimed in claim 1, it is characterised in that：The oblique through hole (11) be provided with it is multiple, and And multiple oblique through holes (11) are uniformly distributed along the circumference of mozzle (7), the trend of the plurality of oblique through hole (11) is relative Incline direction in the pipe wall thickness direction of corresponding position is consistent.

3. continuous way crystallizer as claimed in claim 1, it is characterised in that：It is oblique with each on the outside of the tube wall of mozzle (7) An extension tube (12) is provided with to through hole (11) is corresponding, the extension tube (12) connects with corresponding oblique through hole (11), and And the trend of extension tube (12) is consistent with the trend of corresponding oblique through hole (11).

4. continuous way crystallizer as claimed in claim 1, it is characterised in that：The trend of the oblique through hole (11) is from mozzle (7) outside wall surface is to be obliquely installed obliquely, and its angle of inclination is θ, there is 0 ＜ θ≤30 ° between internal face.

5. continuous way crystallizer as claimed in claim 4, it is characterised in that：θ=10 °.

6. continuous way crystallizer as claimed in claim 1, it is characterised in that：The demarcation strip (8) is in the recessed funnel in middle part Shape, and the upper end of the mozzle (7) passes from the lowest point at demarcation strip (8) center.

7. continuous way crystallizer as claimed in claim 1, it is characterised in that：The lower end of the mozzle (7) is through down tube Plate extends downwardly certain distance L after (5)；And it is provided with gear at the underface certain distance P that the lower end of mozzle (7) exports Plate (13)；Wherein L ＞ 0, P ＞ 0.

8. continuous way crystallizer as claimed in claim 1, it is characterised in that：First is provided with the top of top chamber (9) Outlet (14), in the bottom of crystallisation chamber (3) second outlet (15) is provided with, and the side of Heat Room (2) is provided with heat exchange medium Entrance (16), the side relative with heat exchange media input (16) is provided with heat exchange media outlet (17) on Heat Room (2)；Also wrap Charging aperture (18) is included, the charging aperture (18) connects with crystallisation chamber (3).

9. continuous way crystallizer as claimed in claim 8, it is characterised in that：The continuous way crystallizer is for condensation-crystallization work Industry, the charging aperture (18) is connected to the medium position of mozzle (7) by feed pipe (19), and connects with mozzle (7).

10. continuous way crystallizer as in one of claimed in any of claims 1 to 9, it is characterised in that：Set in mozzle (7) Helical-blade (20) is equipped with, the helical-blade (20) is by rotating shaft (21) and the drive mechanism (22) being arranged on above upper chamber (1) Be connected, by the drive mechanism (22) drive helical-blade (20) rotate with order about the liquid in mozzle (7) to Lower flowing；When baffle plate (13) are provided with, the baffle plate (13) is in rotating shaft (21).