CN207153134U - A kind of falling film evaporation tower - Google Patents
A kind of falling film evaporation tower Download PDFInfo
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- CN207153134U CN207153134U CN201721085829.1U CN201721085829U CN207153134U CN 207153134 U CN207153134 U CN 207153134U CN 201721085829 U CN201721085829 U CN 201721085829U CN 207153134 U CN207153134 U CN 207153134U
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- falling film
- downspout
- steam
- film evaporation
- liquid distributor
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Abstract
The utility model discloses a kind of falling film evaporation tower, is related to liquid evaporation concentration technique field.By the way that falling film evaporator is coupled with tower, realize that falling film evaporation concentration is combined with tower reactor steam indirectly heat evaporation and concentration, the cooling of tower top chuck, so as to both improve heat utilization rate, improve the concentration of feed liquid again；In addition, by setting sealing plate in middle part falling film evaporation section, it ensure that overflow will not occur for the material in cloth sap cavity, groove is set on the lower outer tubes wall of liquid distributor, annular space is formed between downspout and liquid distributor, the material in distribution cavity is allowd uniformly to flow into downspout along the annular space and form liquid film, so as to improve the evaporation efficiency of falling film evaporation section and heat utilization rate；Moreover, being connected by using cooling jacket with cloth sap cavity, the material in chuck is introduced to the structure of downspout, can effectively avoid the fouling and blocking of chuck bottom.
Description
Technical field
It the utility model is related to liquid evaporation concentration technique field, more particularly to a kind of falling film evaporation tower.
Background technology
Falling film evaporation can be operated continuously under the conditions of vacuum and low temperature, have evaporability it is high, it is energy-saving, operation
Expense is low and can guarantee that material the characteristics of consistency, is widely used for medicine, food, chemical industry, light industry etc. in evaporation process
The water of industry or the evaporation and concentration of organic solvent solution, and the liquid waste processing of above industry is can be widely used for, be particularly suitable for use in heat
Quick property material.
At present, falling film evaporator is to add feed liquid self-heating room upper tube box, through liquid distribution and film formation device, is uniformly divided
It is fitted in each heat exchanger tube, under gravity and vacuum induced and airflow function, is flowed from top to bottom into uniformly membranaceous.Flow process
In, vaporized by shell side heating medium heating, caused steam enters the separation chamber of evaporator with liquid phase jointly, and vapour-liquid is through fully dividing
From steam enters condenser condensation (single-action operation) or enters lower 1st effective evaporator as heating medium, so as to realize that multiple-effect is grasped
Make, liquid phase is then discharged by separation chamber.
But the strength of fluid obtained after falling film evaporator concentrates is not also very high, the heat energy profit to heating medium
It is with efficiency nor very high, so, it is badly in need of a kind of new structure, the principle of falling film evaporation can be utilized, and can improve to obtain
Strength of fluid, while improve heating medium heat utilization rate.
Utility model content
The purpose of this utility model is to provide a kind of falling film evaporation tower, so as to solve foregoing present in prior art ask
Topic.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of falling film evaporation tower, including：Top chuck cooling section, middle part falling film evaporation section and lower steam bringing-up section；
Cooling jacket is provided with the outer wall of the top chuck cooling section；
The middle part falling film evaporation section includes sealing plate, liquid distributor, upper perforated plate and downspout successively from top to bottom, described close
Cavity between shrouding and the upper perforated plate is cloth sap cavity, and the top of the liquid distributor is fixed on the sealing plate, the cloth
Set fluted on the lower outer tubes wall of liquid pipe, the outer wall of the concave part of the liquid distributor is close to the inwall insertion of the downspout
In the downspout, and the upper end of the groove is located at the top of the downspout upper port, and the top of the downspout is fixed
On the upper perforated plate；
Material inlet is provided with the top of the cooling jacket, the bottom of the cooling jacket is connected with the sealing plate,
And the hole by being opened up on the sealing plate is connected with the cloth sap cavity；
Material inlet is provided with the side wall of the cloth sap cavity；
Steam inlet is provided with where the downspout in the upper portion side wall of cavity, the bottom of cavity where the downspout
Steam condensate outlet is provided with side wall；
Where the top of the liquid distributor material steam condensate outlet is provided with the side wall of cavity；
The lower steam bringing-up section is provided with steam inlet and steam (vapor) outlet.
Preferably, the groove set on the lower outer tubes wall of the liquid distributor is spiral groove.
Preferably, the upper weld of the liquid distributor is fixed on the sealing plate.
Preferably, the upper weld of the downspout is fixed on the upper perforated plate.
Preferably, the lower steam bringing-up section is provided with coiled pipe, and one end of the coiled pipe is connected with the steam inlet,
The other end of the coiled pipe is connected with the steam (vapor) outlet.
The beneficial effects of the utility model are：A kind of falling film evaporation tower that the utility model embodiment provides, by that will drop
Film evaporator is coupled with tower, realizes falling film evaporation concentration and tower reactor steam indirectly heat evaporation and concentration, tower top chuck
Cooling is combined, and so as to both improve heat utilization rate, improves the concentration of feed liquid again；In addition, by middle part falling film evaporation
Section setting sealing plate, ensure that overflow will not occur for the material in cloth sap cavity, groove is set on the lower outer tubes wall of liquid distributor,
Annular space is formed between downspout and liquid distributor so that the material in distribution cavity can uniformly flow into downspout simultaneously along the annular space
Liquid film is formed, so as to improve the evaporation efficiency of falling film evaporation section and heat utilization rate；Moreover, by using cooling jacket and cloth liquid
Chamber is connected, and the material in chuck is introduced to the structure of downspout, can effectively avoid the fouling and blocking of chuck bottom.
Brief description of the drawings
Fig. 1 is the overall structure diagram of falling film evaporation tower；
Fig. 2 is the structural representation of middle part falling film evaporation section；
Fig. 3 is liquid distributor concave part structural representation；
Fig. 4 is sealing plate top view.
In figure, the implication of each symbol is as follows：
1 materials at bottom of tower is exported, 2 lower steam bringing-up section steam (vapor) outlets, 3 coiled pipes, 4 downspouts, and 5 middle part falling film evaporation sections are steamed
Vapor inlet, 6 liquid distributors, the hole opened up on 7 sealing plates, 8 sealing plates, 9 cooling jacket material inlets, 10 cooling jackets, 11 materials
Steam condensate exports, 12 cloth sap cavity material inlets, 13 distribution cavities, 14 upper perforated plates, the outlet of 15 falling film evaporation section steam condensates, under 16
Portion's steam heating segment steam inlet, 17 tower seats, 18 grooves, the outer wall of 8-1 cooling jackets, the hole opened up on 8-2 (7) sealing plate,
The inwall of 8-3 cooling jackets, 8-3 liquid distributor mouths.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.It should be appreciated that embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
As Figure 1-4, the utility model embodiment provides a kind of falling film evaporation tower, including：Top chuck cooling section,
Middle part falling film evaporation section and lower steam bringing-up section；
Cooling jacket 10 is provided with the outer wall of the top chuck cooling section；
The middle part falling film evaporation section includes sealing plate 8, liquid distributor 6, upper perforated plate 14 and downspout 4 successively from top to bottom,
Cavity between sealing plate 8 and upper perforated plate 14 is cloth sap cavity 13, and the top of liquid distributor 6 is fixed on sealing plate 8, liquid distributor 6
Fluted 18 are set on lower outer tubes wall, the outer wall of the concave part of liquid distributor 6 is close in the inwall insertion downspout 4 of downspout 4,
And the upper end of groove 18 is located at the top of the upper port of downspout 4, the top of downspout 4 is fixed on upper perforated plate 14；
The top of cooling jacket 10 is provided with material inlet 9, and the bottom of cooling jacket 10 is connected with sealing plate 8, and is passed through
The hole 7 opened up on sealing plate 8 is connected with cloth sap cavity 13；
Material inlet 12 is provided with the side wall of cloth sap cavity 13；
Steam inlet 5, the lower sides of the place cavity of downspout 4 are provided with the upper portion side wall of the place cavity of downspout 4
On be provided with steam condensate outlet 15；
Where the top of liquid distributor 6 material steam condensate outlet 11 is provided with the side wall of cavity；
The lower steam bringing-up section is provided with steam inlet 16 and steam (vapor) outlet 2.
The falling film evaporation tower of said structure, its operation principle are：
1. need to handle material respectively enters drop in middle part falling film evaporation section by material inlet and top chuck material inlet
Film evaporating column, solution form certain liquid level in distribution cavity and flow into descending liquid by the groove gap between liquid distributor and downspout
Pipe, material is flowed downward along downspout and ready-made descending liquid film, material and the steam heat-exchanging in downspout shell side and evaporation, steam
Tower top is led to by liquid distributor, after being cooled down by tower top chuck, drawn from condensate outlet；
2. tube wall of the liquid after being concentrated by evaporation along downspout flows into tower reactor, material continues in tower reactor by heat exchange coiled pipe
Heating, the material after concentration are discharged from outlet at bottom；
3. tower reactor concentrate is exported by materials at bottom of tower and drawn；
4. steam divides two-way to enter, a route tower reactor heat exchange coiled pipe import enters, and tower reactor solution is added, exchanged heat by tower reactor
Coiled pipe steam (vapor) outlet is drawn；The steam inlet that another way is set where downspout on chamber outer wall enters the shell side of downspout,
Lime set is drawn by outlet.
5. in liquid distributor insertion downspout, material is downward by the helical groove formation space between liquid distributor and downspout
Flowing, uniform descending liquid form liquid film.
6. material distribution cavity can ensure that the uniform cloth liquid of material, material is limited by liquid distributor top seal plate, prevented
Only excessively there is the situation that overflow destroys liquid film in material.
7. the material steam drawn from liquid distributor enters tower top, heat exchange drop is carried out in the presence of cold material in cooling jacket
Temperature, obtained material steam lime set are produced by condensate outlet survey line；
8. the cooling medium in tower top cooling jacket is served as by cold material, it is introduced into chuck, changes from the import at the top of chuck
Entered after heat by the hole opened up on sealing plate in distribution cavity, together entered with the material entered in distribution cavity by liquid distributor and dropped
Liquid pipe, liquid film is formed, and be concentrated by evaporation.
The Temperature Distribution of whole falling film evaporation tower from the bottom to top, gradually reduces, the relatively low temperature in top, is advantageous to steam
Condensation, the higher temperature in bottom are advantageous to the evaporation and concentration of material.
It can be seen that material initially enters the evaporation of falling film evaporation heat exchanger, steam heats concentrate in falling film evaporation tower reactor again
Concentration, tower top design cooling jacket and survey line extraction lime set, are advantageous to making full use of for heat.
So in the technical program, by the way that falling film evaporator is coupled with tower, falling film evaporation concentration is realized
It is concentrated by evaporation and is combined with tower reactor steam indirectly heat, not only increases the utilization rate of steam thermal energy, and improve material
Concentrating degree.
Wherein, the groove design of unique liquid distributor, it is ensured that downspout film forming is uniform, and caused steam is drawn,
Improve the efficiency of falling film evaporation, meanwhile, by setting sealing plate, can avoid distribution cavity because liquid level is high and caused by overflow, influence
Downspout liquid film.
The tower top chuck type of cooling, thermal source can be made full use of, improve energy utilization rate, the design that chuck is connected with distribution cavity
Scheme, it can effectively avoid the fouling and blocking of chuck bottom.
In a preferred embodiment of the present utility model, the groove 18 that is set on the lower outer tubes wall of liquid distributor 6 can be with
For spiral groove.
In said structure, groove is set on the lower outer tubes wall of liquid distributor, is in order that the liquid of downspout must be entered
Film-formation result is more preferable, and so as to improve the efficiency of falling film evaporation, in the present embodiment, groove is arranged into spiral shape, can cause into
Enter that the liquid flow effect of downspout is more preferable, and obtained film is thinner, advantageously in improving evaporation efficiency.
As will be understood by the skilled person in the art, the form of groove can also be configured according to the actual needs.Than
Such as, it could be arranged to strip groove.
In the present embodiment, the upper weld of liquid distributor 6 is fixed on sealing plate 8.
By the way of being welded and fixed, it can make it that connection is more firm, be not easily susceptible to the influence of extraneous factor.
In the present embodiment, the upper weld of downspout 4 is fixed on upper perforated plate 14.
By the way of being welded and fixed, it can make it that connection is more firm, be not easily susceptible to the influence of extraneous factor.
In a preferred embodiment of the present utility model, the lower steam bringing-up section is provided with coiled pipe 3, coiled pipe 3
One end is connected with steam inlet 16, and the other end of coiled pipe 3 is connected with steam (vapor) outlet 2.
Using said structure, steam can be enabled preferably to carry out heating evaporation concentration to material, it is effective to utilize
The heat of steam, improve the evaporation and concentration degree of material.
By using above-mentioned technical proposal disclosed in the utility model, following beneficial effect has been obtained：The utility model
A kind of falling film evaporation tower that embodiment provides, by the way that falling film evaporator is coupled with tower, realize that falling film evaporation concentrates
It is combined with tower reactor steam indirectly heat evaporation and concentration, the cooling of tower top chuck, so as to both improve heat utilization rate, improves again
The concentration of feed liquid；In addition, by setting sealing plate in middle part falling film evaporation section, it ensure that the material in cloth sap cavity will not overflow
Stream, sets groove on the lower outer tubes wall of liquid distributor, annular space is formed between downspout and liquid distributor so that in distribution cavity
Material can uniformly flow into downspout along the annular space and form liquid film, so as to improve the evaporation efficiency of falling film evaporation section and heat energy
Utilization rate；Moreover, being connected by using cooling jacket with cloth sap cavity, the material in chuck is introduced to the structure of downspout, can be had
Effect avoids the fouling and blocking of chuck bottom.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching should also regard the scope of protection of the utility model.
Claims (5)
- A kind of 1. falling film evaporation tower, it is characterised in that including：Top chuck cooling section, middle part falling film evaporation section and lower steam Bringing-up section；Cooling jacket is provided with the outer wall of the top chuck cooling section；The middle part falling film evaporation section includes sealing plate, liquid distributor, upper perforated plate and downspout, the sealing plate successively from top to bottom Cavity between the upper perforated plate is cloth sap cavity, and the top of the liquid distributor is fixed on the sealing plate, the liquid distributor Lower outer tubes wall on set fluted, the outer wall of the concave part of the liquid distributor is close to described in the inwall insertion of the downspout In downspout, and the upper end of the groove is located at the top of the downspout upper port, and the top of the downspout is fixed on institute State on upper perforated plate；Material inlet is provided with the top of the cooling jacket, the bottom of the cooling jacket is connected with the sealing plate, and is led to The hole opened up is crossed on the sealing plate to be connected with the cloth sap cavity；Material inlet is provided with the side wall of the cloth sap cavity；Steam inlet is provided with where the downspout in the upper portion side wall of cavity, the lower sides of cavity where the downspout On be provided with steam condensate outlet；Where the top of the liquid distributor material steam condensate outlet is provided with the side wall of cavity；The lower steam bringing-up section is provided with steam inlet and steam (vapor) outlet.
- 2. falling film evaporation tower according to claim 1, it is characterised in that set on the lower outer tubes wall of the liquid distributor Groove is spiral groove.
- 3. falling film evaporation tower according to claim 1, it is characterised in that the upper weld of the liquid distributor is fixed on described On sealing plate.
- 4. falling film evaporation tower according to claim 1, it is characterised in that the upper weld of the downspout is fixed on described On upper perforated plate.
- 5. falling film evaporation tower according to claim 1, it is characterised in that the lower steam bringing-up section is provided with coiled pipe, One end of the coiled pipe is connected with the steam inlet, and the other end of the coiled pipe is connected with the steam (vapor) outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085829.1U CN207153134U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085829.1U CN207153134U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporation tower |
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| Publication Number | Publication Date |
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| CN207153134U true CN207153134U (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721085829.1U Active CN207153134U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporation tower |
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| Country | Link |
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| CN (1) | CN207153134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591992A (en) * | 2018-06-06 | 2018-09-28 | 浙江大学 | A kind of Non-scale steam generator |
-
2017
- 2017-08-28 CN CN201721085829.1U patent/CN207153134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591992A (en) * | 2018-06-06 | 2018-09-28 | 浙江大学 | A kind of Non-scale steam generator |
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