CN205391763U - Reverse -flow falling film evaporation ware - Google Patents
Reverse -flow falling film evaporation ware Download PDFInfo
- Publication number
- CN205391763U CN205391763U CN201620155421.6U CN201620155421U CN205391763U CN 205391763 U CN205391763 U CN 205391763U CN 201620155421 U CN201620155421 U CN 201620155421U CN 205391763 U CN205391763 U CN 205391763U
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- CN
- China
- Prior art keywords
- hole
- tube section
- membrane tube
- heat pipe
- falling film
- 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.)
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Abstract
The utility model discloses a reverse -flow falling film evaporation ware, including concentrated fluid reservoir, heater and steam chamber, the both ends of heater have last tube sheet and tube sheet down respectively, go up the tube sheet and have a plurality of through -holes I, lower tube sheet have and I assorted through -hole II of through -hole, heater include many and through -hole I and II assorted heating pipes of through -hole, and the upper end of heating pipe is passed through -hole I and cloth membrane ware intercommunication, the upper portion of cloth membrane ware be equipped with with the steam chamber in the branch liquid baffle of wall connection, divide the interval that has circulation steam between liquid baffle and the steam chamber inner wall, the upper surface of branch liquid baffle is equipped with the chute, the upper portion space of chute is equipped with the silk screen demister. The utility model discloses showing and improving the heat transfer state, the reinforcing is boild and is given heat, improves coefficient of heat transfer, and improve coefficient of heat transfer 25% than existing parallel type falling film evaporation ware and control, reduce circulating pump power consumption 1 2 doubly to it is little to have area, heating pipe characteristics such as not crooked perpendicularly.
Description
Technical field
The utility model belongs to the vaporising device neighborhood of various solution, and a kind of reverse-flow falling liquid film steams
Send out device.
Background technology
Falling film evaporator is the utility model of 1966, after whole nation every profession and trade is pushed in salt industry to, and the most 50
Year, its version does not has much changes so far.As it is shown in figure 1, its structure member is added by falling film evaporator
Hot device 1`, falling film evaporator sub-material tank 2`, falling film evaporator vaporization chamber 3`, falling film evaporator circulating pump 4`,
Falling film evaporator circulating lines etc. form.Topology layout is: falling film evaporator sub-material tank 2` and falling film evaporator
Up, falling film evaporator vaporization chamber 3` is in lower section, and Distribution Plate Used in Film Evaporators is generally spiral for heater 1`
Head, or sawtooth mouth overflow pipe, the heat pipe great majority that add in falling film evaporator heater 1` do not have dividing plate, cause
Add heat pipe bending etc..Feed liquid, adds at falling film evaporator from top after eddy flow entrance falling film evaporator adds heat pipe
Explosive evaporation in heat pipe, the indirect steam of evaporation and liquid film also flow, all flow downward, add from falling film evaporator
Heat pipe lower end is flowed out, and enters falling film evaporator vaporization chamber 3`, and a concentrate part is by falling film evaporator circulating pump
4` circulates, and squeezes into the falling film evaporator sub-material tank 2` of top, and it is external that a part discharges falling film evaporator.At present,
The falling film evaporator of this parallel type has the drawback that:
Owing to the heat pipe that adds of falling film evaporator bends, cloth is uneven, and evaporation efficiency is on the low side；
Owing to falling film evaporator heater 1` and falling film evaporator concentrate flow container (a point vapour of holding concurrently) 3` in one plane,
Arranging in double tanks, floor space is big；
The liquid level difference of heater lower perforated plate and concentration tank is away from greatly, and the circulation lift of needs is high；
Cloth film is the most advanced, and cloth film amount is big, causes circular flow big, increases circulation power consumption；
Disadvantages mentioned above reduces the performance of multiple-effect falling film evaporation.
Utility model content
, power consumption big according to above-mentioned existing falling film evaporator floor space is big, the shortcomings such as evaporation efficiency is on the low side,
And a kind of reverse-flow falling film evaporator is provided.
The technological means that the utility model uses is as follows:
A kind of reverse-flow falling film evaporator, including concentrating flow container, heater and vaporium, described heater
Two ends are respectively provided with upper perforated plate and lower perforated plate, and described upper perforated plate has multiple through hole I, and described lower perforated plate has
The through hole II matched with described through hole I, described heater includes many and described through hole I and described through hole
II match add heat pipe, described in add the two ends of heat pipe and lay respectively in described through hole I and described through hole II,
The upper end of described concentration flow container is connected with described lower perforated plate by flange, described upper perforated plate and described steam
The lower end Flange joint of room, described in add the upper end of heat pipe and connect with filming device through described through hole I, described cloth
The top of film device is provided with the separatory baffle plate being connected with described vaporium inwall, described separatory baffle plate and described steam
Having the spacing of flowing steam between chamber interior walls, the upper surface of described separatory baffle plate is provided with chute, described chute
Upper space be provided with wire mesh demister,
The top of described vaporium is provided with indirect steam and exports and uniform many with described vaporium axis for axle
Individual mouth spray, the sidewall of described vaporium is provided with circulation fluid import, and described circulation fluid import has and extends to institute
State the liquid outlet of the described circulation fluid import on chute top,
The upper portion side wall of described heater is provided with heating steam inlet, and the lower sides of described heater is provided with cold
Solidifying water out and on-condensible gas outlet,
The sidewall of described concentration flow container is provided with concentrate overflow outlet, and the bottom of described concentration flow container is provided with circulation
Liquid outlet and inlet, be provided with circulating pump between the outlet of described circulation fluid and described circulation fluid import.
Described filming device is to add the cloth membrane tube section that heat pipe matches, one end of described cloth membrane tube section and institute with described
Stating and add heat pipe connection, the lower surface of described cloth membrane tube section neatly connects with the described upper surface adding heat pipe, described
The other end of cloth membrane tube section and described steam chambers, add the interior of heat pipe described in the internal diameter ratio of described cloth membrane tube section
The little 1-2mm in footpath, the wall thickness of described cloth membrane tube section is 4-7mm, described cloth membrane tube section a length of
100-300mm, described cloth membrane tube section is that be provided with many levels with described cloth membrane tube tangent tangentially the entering of section inwall
Material hole, the axis perpendicular of each aspect and described cloth membrane tube section, each aspect be provided with multiple described in cut
To charging hole.
The a small amount of unformed liquid carried secretly when described separatory baffle plate for going out described cloth membrane tube section to indirect steam
Carry out inertial separation,
Described chute, for alleviating the impact to Bu Mo district liquid level of the cycle stock liquid flow, makes cycle stock liquid flow steadily enter
Enter filming device.
The silk screen material of described wire mesh demister determines, such as non-corrosiveness, Ke Yixuan according to evaporation feed liquid character
Select common stainless steel silk screen, as being corrosive, corrosion resisting alloy silk screen or plastic silk screen can be selected,
The mist that indirect steam can be carried secretly by described wire mesh demister finely separates,
It is provided with the sprayer for clearing up described wire mesh demister in described mouth spray, silk screen can be carried out periodically
Spray washing.
The flow in all described tangential admission hole being positioned at the same aspect of below liquid level is:
V=0.487*3600nd2(2gH)1/2, unit is m3/ h,
Wherein, n is the quantity in the described tangential admission hole in same aspect,
D is the aperture in the described tangential admission hole in same aspect, and unit is m,
H is the vertical range between described aspect and liquid level below liquid level, and unit is m, described liquid
Face refers to cloth film liquid level, and cloth film liquid level is less than the height of described cloth membrane tube section, a part of described tangential admission
Hole is embedded in below liquid level, i.e. H can also be considered as described tangential admission hole submergence below liquid level.
G is acceleration of gravity, and unit is m/s2,
It is positioned at the flow sum in described tangential admission hole of each aspect of below liquid level equal to described cloth membrane tube section
Flow.Owing to the submergence in the described tangential admission hole of each aspect is different, flow is the most different, therefore, and institute
State the flow sum in the described tangential admission hole that flow is each aspect of cloth membrane tube section.
Described cloth membrane tube section is provided with the tangent with described cloth membrane tube section inwall described of 2-4 aspect and tangentially enters
Material hole, each aspect is provided with 4-6 described tangential admission hole, and the aperture in described tangential admission hole is 3-8mm.
Described cloth membrane tube section is provided with and adds, with described, the connecting portion that heat pipe is connected, and described connecting portion is in a tubular form, described
The internal diameter of connecting portion matches with the described external diameter adding heat pipe, described connecting portion and the described connection side adding heat pipe
Formula is the one in spot welding, socket joint, screw thread, bonding.
Be provided with in described heater polylith vertical with the axis of described heater, alternately arranged circle lack type
Dividing plate.Described circle lacks the round segmental part of type dividing plate and divides is steam channel.
It is to add the straight of heat pipe described in strict holding that described circle lacks the effect of type dividing plate, it is ensured that described in add in heat pipe
The Uniform Flow of liquid film, simultaneously as described circle to lack type dividing plate alternately arranged along the axis of described heater,
Make steam lack at described circle and between type dividing plate, carry out cross-flow, improvement is added vapours biography in described heater
Warm status.
Described separatory baffle plate is disc-shaped.
The diameter of described wire mesh demister is equal to the inner diameter of described vaporium.
The described heat pipe that adds is metal tube or graphite-pipe.
Under duty, material need to be concentrated and export to enter from circulation fluid through circulating pump at concentration flow container bottom circulation fluid
Mouth press-in vaporium, through described chute, and flows into cloth diaphragm area, by described tangential admission hole from chute two ends
Enter described cloth membrane tube section, thus add in heat pipe in described in membranaceous entering into, flow downward, be heated and boil
After rising evaporation and concentration, flowing to described concentration flow container, the concentrate in described contracting flow container, a part is followed by described
Ring is pumped into described circulation fluid import circulating and evaporating, and another part discharges the reverse-flow falling film evaporator of described one
External；Indirect steam adds in heat pipe to upper flowing from described, enters described cloth membrane tube section, and without hindrance rushes at
Described separatory baffle plate, foam, liquid that indirect steam is carried secretly obtains separation at separatory baffle plate and flows down, and steam presss from both sides
Carry tiny mist to walk around described separatory baffle plate, pass between described separatory baffle plate and described vaporium inwall,
Rise to described wire mesh demister, export from described indirect steam after described wire mesh demister removes mist
Discharge；
Compared with prior art, the vertical tube structure of the utility model only one of which, than existing falling film evaporator
Double tank bodies, reduced footprint one times；The utility model is provided with and adds to go out above heat pipe the rill that vapour is without hindrance
Amount filming device, it is achieved add the vertical unbending low discharge falling liquid film high-efficiency evaporating of heat pipe；The utility model decreases
Circular flow, not only reduces power consumption, and significantly improves heat transfer conditions, strengthens boiling to heat, raising
Heat transfer coefficient, improves heat transfer coefficient about 25% than existing parallel type falling film evaporator, reduces circulating pump power consumption
1～2 times；The utility model eliminates sufficiently bulky vaporization chamber, only maintains with a small amount of liquid concentrating flow container and follows
The circulation of ring pump；So this evaporimeter has minimum liquid holdup, make feed liquid flow through evaporimeter fastest,
Shortest time, is suitable for the feed liquid evaporation and concentration that nodeless mesh separates out, is particularly suitable for anaphylaxis material, easily divides
Solve material and the evaporation and concentration of the bigger material of viscosity, be particularly suited for the multi-effect evaporating device of little different transfer of heat.
The utility model can be widely popularized at neighborhoods such as vaporising devices for the foregoing reasons.
Accompanying drawing explanation
With detailed description of the invention, the utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of existing falling film evaporator.
Fig. 2 is the structural representation of a kind of reverse-flow falling film evaporator in detailed description of the invention of the present utility model.
Detailed description of the invention
Embodiment 1
As in figure 2 it is shown, a kind of reverse-flow falling film evaporator, including concentrating flow container 1, heater 2 and vaporium
3, the two ends of described heater 2 are respectively provided with upper perforated plate 4 and lower perforated plate 5, and described upper perforated plate 4 has multiple
Through hole I, described lower perforated plate 5 has the through hole II matched with described through hole I, and described heater 2 includes
Many add heat pipe 6 with described through hole I and described through hole II match, described in add the position respectively, two ends of heat pipe 6
In described through hole I and described through hole II,
The upper end of described concentration flow container 1 is connected with described lower perforated plate 5 by flange 7, described upper perforated plate 4 and
The lower end flanges 8 of described vaporium 3 connects, described in add one end of heat pipe 6 through described through hole I and cloth film
Device connects, and the top of described filming device is provided with the separatory baffle plate 9 being connected with described vaporium 3 inwall, described point
There is the spacing of flowing steam, described separatory baffle plate 9 upper between liquid baffle plate 9 and described vaporium 3 inwall
Surface is provided with chute 10, and the upper space of described chute 10 is provided with wire mesh demister 11,
The top of described vaporium 3 is provided with indirect steam outlet 12 and equal for axle with described vaporium 3 axis
Three mouth sprays 13 of cloth, the sidewall of described vaporium 3 is provided with circulation fluid import 14, described circulation fluid import
14 liquid outlets 15 with the described circulation fluid import extending to described chute 10 top,
The upper portion side wall of described heater 2 is provided with heating steam inlet 16, the lower sides of described heater 2
It is provided with condensation-water drain 17 and on-condensible gas outlet 18,
The sidewall of described concentration flow container 1 is provided with concentrate overflow outlet 19, and the bottom of described concentration flow container 1 sets
There are circulation fluid outlet 20, inlet 21 and visor 22, described circulation fluid outlet 20 and described circulation fluid import
Circulating pump 23 it is provided with between 14.
Described filming device is to add the cloth membrane tube section 24 that heat pipe 6 matches, the one of described cloth membrane tube section 24 with described
End connects with the described heat pipe 6 that adds, and the lower surface of described cloth membrane tube section 24 is whole with the described upper surface adding heat pipe 6
Connecting together, the upper end of described cloth membrane tube section 24 connects with described vaporium 3, described cloth membrane tube section 24 interior
Adding the little 1-2mm of internal diameter of heat pipe 6 described in the ratio of footpath, the wall thickness of described cloth membrane tube section 24 is 4-7mm, described cloth
The a length of 100-300mm of membrane tube section 24,
Described cloth membrane tube section 24 is that be provided with 2-4 aspect with described cloth membrane tube section 24 tangent tangentially the entering of inwall
Material hole, the axis perpendicular of each aspect and described cloth membrane tube section 24, each aspect is provided with 4-6 institute
State tangential admission hole.The aperture in described tangential admission hole is 3-8mm, the inner diameter edge in described tangential admission hole
Tangent with the inner diameter edge of described cloth membrane tube section 24.
The flow in all described tangential admission hole being positioned at the same aspect of below liquid level is:
V=0.487*3600nd2(2gH)1/2, unit is m3/ h,
Wherein, n is the quantity in the described tangential admission hole in same aspect,
D is the aperture in the described tangential admission hole in same aspect, and unit is m,
H is the vertical range between described aspect and liquid level below liquid level, and unit is m,
G is acceleration of gravity, and unit is m/s2,
It is positioned at the flow sum in described tangential admission hole of each aspect of below liquid level equal to described cloth membrane tube section
Flow.
Described cloth membrane tube section 24 is provided with and adds, with described, the connecting portion that heat pipe 6 is connected, described connecting portion in a tubular form,
The internal diameter of described connecting portion matches with the described external diameter adding heat pipe 6, described connecting portion and the described heat pipe that adds
Connected mode is the one in spot welding, socket joint, screw thread, bonding.
The circle that polylith is vertical, alternately arranged with the axis of described heater 2 it is provided with in described heater 2
Lack type dividing plate 25.Described circle lacks the round segmental part of type dividing plate 25 and divides 26 to be steam channel.
Described separatory baffle plate 9 is disc-shaped.
The diameter of described wire mesh demister 11 is equal to the inner diameter of described vaporium 3.
Described adds heat pipe 6 for graphite-pipe.
Embodiment 2
A kind of reverse-flow falling film evaporator, 1 difference of itself and embodiment is, described in add heat pipe 6 and be
The metal tube of inner wall smooth.
The above, only the utility model preferably detailed description of the invention, but protection model of the present utility model
Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at the utility model
In enclosing, conceive in addition equivalent or change according to the technical solution of the utility model and utility model thereof, all
Should contain within protection domain of the present utility model.
Claims (9)
1. a reverse-flow falling film evaporator, it is characterised in that: include concentrating flow container, heater and vaporium,
The two ends of described heater are respectively provided with upper perforated plate and lower perforated plate, and described upper perforated plate has multiple through hole I, institute
Stating lower perforated plate and have the through hole II matched with described through hole I, described heater includes many and described through hole
I and described through hole II match add heat pipe, described in add the two ends of heat pipe and lay respectively at described through hole I and institute
State in through hole II,
The upper end of described concentration flow container is connected with described lower perforated plate by flange, described upper perforated plate and described steam
The lower end Flange joint of room, described in add the upper end of heat pipe and connect with filming device through described through hole I, described cloth
The top of film device is provided with the separatory baffle plate being connected with described vaporium inwall, described separatory baffle plate and described steam
Having the spacing of steam circulation between chamber interior walls, the upper surface of described separatory baffle plate is provided with chute, described chute
Upper space be provided with wire mesh demister,
The top of described vaporium is provided with indirect steam and exports and uniform many with described vaporium axis for axle
Individual mouth spray, the sidewall of described vaporium is provided with circulation fluid import, and described circulation fluid import has and extends to institute
State the liquid outlet of the described circulation fluid import on chute top,
The upper portion side wall of described heater is provided with heating steam inlet, and the lower sides of described heater is provided with cold
Solidifying water out and on-condensible gas outlet,
The sidewall of described concentration flow container is provided with concentrate overflow outlet, and the bottom of described concentration flow container is provided with circulation
Liquid outlet and inlet, be provided with circulating pump between the outlet of described circulation fluid and described circulation fluid import.
The reverse-flow falling film evaporator of one the most according to claim 1, it is characterised in that: described cloth film
Device is to add, with described, the cloth membrane tube section that heat pipe matches, and one end of described cloth membrane tube section connects with the described heat pipe that adds,
The lower surface of described cloth membrane tube section neatly connects with the described upper surface adding heat pipe, another of described cloth membrane tube section
Hold and described steam chambers, described in the internal diameter ratio of described cloth membrane tube section, add the little 1-2mm of internal diameter of heat pipe, institute
The wall thickness stating cloth membrane tube section is 4-7mm, a length of 100-300mm of described cloth membrane tube section, described cloth membrane tube
Section is provided with the tangential admission hole tangent with described cloth membrane tube section inwall of many levels, each aspect and institute
Stating the axis perpendicular of cloth membrane tube section, each aspect is provided with multiple described tangential admission hole.
The reverse-flow falling film evaporator of one the most according to claim 2, it is characterised in that: it is positioned at liquid level
The flow in all described tangential admission hole in the most same aspect is:
V=0.487*3600nd2(2gH)1/2, unit is m3/ h,
Wherein, n is the quantity in the described tangential admission hole in same aspect,
D is the aperture in the described tangential admission hole in same aspect, and unit is m,
H is the vertical range between described aspect and liquid level below liquid level, and unit is m,
G is acceleration of gravity, and unit is m/s2,
It is positioned at the flow sum in described tangential admission hole of each aspect of below liquid level equal to described cloth membrane tube section
Flow.
4. according to the reverse-flow falling film evaporator of the one described in Claims 2 or 3, it is characterised in that: described
Cloth membrane tube section is provided with the described tangential admission hole tangent with described cloth membrane tube section inwall of 2-4 aspect, each
Aspect is provided with 4-6 described tangential admission hole, and the aperture in described tangential admission hole is 3-8mm.
The reverse-flow falling film evaporator of one the most according to claim 4, it is characterised in that: described cloth film
Pipeline section is provided with and adds, with described, the connecting portion that heat pipe is connected, described connecting portion in a tubular form, the internal diameter of described connecting portion
Matching with the described external diameter adding heat pipe, described connecting portion is spot welding with the described connected mode adding heat pipe, holds
Insert, one in screw thread, bonding.
The reverse-flow falling film evaporator of one the most according to claim 1, it is characterised in that: described heating
Be provided with in device polylith vertical with the axis of described heater, alternately arranged circle lack type dividing plate.
The reverse-flow falling film evaporator of one the most according to claim 1, it is characterised in that: described separatory
Baffle plate is disc-shaped.
The reverse-flow falling film evaporator of one the most according to claim 1, it is characterised in that: described silk screen
The diameter of demister is equal to the inner diameter of described vaporium.
The reverse-flow falling film evaporator of one the most according to claim 1, it is characterised in that: described adds
Heat pipe is metal tube or graphite-pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155421.6U CN205391763U (en) | 2016-02-29 | 2016-02-29 | Reverse -flow falling film evaporation ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155421.6U CN205391763U (en) | 2016-02-29 | 2016-02-29 | Reverse -flow falling film evaporation ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205391763U true CN205391763U (en) | 2016-07-27 |
Family
ID=56947696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620155421.6U Expired - Fee Related CN205391763U (en) | 2016-02-29 | 2016-02-29 | Reverse -flow falling film evaporation ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205391763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536273A (en) * | 2016-02-29 | 2016-05-04 | 许达人 | Counter-flow falling-film evaporator |
-
2016
- 2016-02-29 CN CN201620155421.6U patent/CN205391763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536273A (en) * | 2016-02-29 | 2016-05-04 | 许达人 | Counter-flow falling-film evaporator |
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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: 20160727 Termination date: 20180229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |