CN109499082A - A kind of vertical luwa evaporator of Multi-stage spiral charging - Google Patents
A kind of vertical luwa evaporator of Multi-stage spiral charging Download PDFInfo
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- CN109499082A CN109499082A CN201811470936.5A CN201811470936A CN109499082A CN 109499082 A CN109499082 A CN 109499082A CN 201811470936 A CN201811470936 A CN 201811470936A CN 109499082 A CN109499082 A CN 109499082A
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- evaporation
- charging
- cylinder
- charging aperture
- liquid
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- 238000001704 evaporation Methods 0.000 claims abstract description 57
- 230000008020 evaporation Effects 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 20
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/222—In rotating vessels; vessels with movable parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a kind of vertical luwa evaporators of Multi-stage spiral charging, the evaporation cylinder of liquid phase discharge port is offered including lower end, transmission device and the heating jacket external set on evaporative cylinder on evaporation cylinder, transmission device drives the transmission shaft rotation through evaporation inner barrel, first charging aperture and several second charging apertures are successively offered from top to bottom along axial direction on evaporation cylinder body outer wall, the liquid distributor for feeding to first charging aperture and carrying out cloth liquid is fixed on transmission shaft, rotor segment is equipped with below liquid distributor, transmission shaft is equipped with the rotor segment of several arrangements corresponding with each second charging aperture, several third feed inlets are uniformly provided on evaporation cylinder body outer wall locating for each second charging aperture in its outer circle circumferential direction；The phenomenon that present invention is segmented cloth liquid by the way that multiple feed inlets are arranged, and can be effectively improved the concentration gradient of liquid film flow pattern and adjustment concentration material inside rotating scraper evaporator, channel and material is avoided to glue wall, improves the actual evaporation efficiency of rotating scraper evaporator.
Description
Technical field
The present invention relates to a kind of wiped film vaporization device fields, steam more particularly to a kind of vertical knifing of Multi-stage spiral charging
Send out device.
Background technique
Inside existing vertical luwa evaporator, material is flowed by vertical type evaporator upper feed inlet, is fixed on transmission
Liquid distributor on axis rotates cloth liquid, feed liquid is got rid of to liquid film is formed on cylinder inner wall, liquid film is circumferentially scraped in gravity and rotor segment
Under the action of power, along cylinder inner wall, helically type flows downward, and then forms thin evaporated film, the screw type track of liquid in cylinder inner wall
The residence time in cylinder inner wall is increased, guarantees effectively evaporation.But experiment and numerical simulation show to be affected by gravity, liquid film
Thickness is gradually thinned along the vertical direction, and rotor segment front end and liquid film surface generate gap, and are gradually increased, and leads to rotor segment
Front end can not gradually scrape liquid film, and liquid film is in rotating scraper evaporator cylinder lower height, and flow pattern is not by rotor segment system
About, only under the effect of gravity, wall surface power and surface force, channel is formed along barrel, and then leads to evaporation in rotating scraper evaporator
Efficiency reduces.In addition, along vertical wall surface concentration process, concentration gradient becomes material when rotating scraper evaporator size is larger
Change larger, the evaporation efficiency of base of evaporator is caused to be substantially reduced, so in actual production, rotating scraper evaporator evaporation effect
Especially when feeding under unstable period, or even there is the case where material is evaporated viscous wall, makes to pass well below theoretical calculation efficiency in rate
The thermal efficiency drastically reduces.
It is general by improving disposable inlet amount in engineering, improve luwa evaporator bottom liquid film flow pattern, but increase simultaneously
Rotating scraper evaporator top thickness of liquid film, or even charging is be easy to cause to accumulate, under can not being formed along cylinder inner wall spirally
Falling liquid film may cause evaporator as a whole evaporation efficiency and drop significantly if misoperation or lacking the guidance of necessary theoretical and experience
Low, rotating scraper evaporator can not work normally.
In view of the above problems, the present invention proposes a kind of vertical rotating scraper evaporator of Multi-stage spiral charging, fundamentally
Liquid film flow pattern inside rotating scraper evaporator is adjusted, reduces or adjusts the concentration gradient of concentration material, improve rotation and scrape
The actual evaporation efficiency of plate evaporator, avoids the occurrence of bad working environments, makes it with more the utility value in industry.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of practical steamings for improving rotating scraper evaporator
Efficiency is sent out, the vertical luwa evaporator of the Multi-stage spiral charging of bad working environments is avoided the occurrence of, to solve liquid film stream in the prior art
The problems such as inefficiency caused by type is not restricted, concentration gradient is larger etc..
The vertical luwa evaporator of Multi-stage spiral charging of the invention, including transmission shaft, lower end offer liquid phase discharge port
Evaporation cylinder, set on evaporation cylinder on transmission device and the heating jacket external set on evaporative cylinder, transmission device drive
Through the transmission shaft rotation of evaporation inner barrel, evaporates and successively offer first charging aperture from top to bottom along axial direction on cylinder body outer wall
With several second charging apertures, it is fixed with the liquid distributor for feeding to first charging aperture and carrying out cloth liquid on transmission shaft, is set below liquid distributor
There is rotor segment, transmission shaft is equipped with the rotor segment of several arrangements corresponding with each second charging aperture, each second
Several third feed inlets are uniformly provided on evaporation cylinder body outer wall locating for feed inlet in its outer circle circumferential direction.
Further, the feedstock direction of each described second charging aperture and third feed inlet with the evaporation cylinder
Excircle is tangent.
Further, the second charging aperture is between two adjacent rotor segments.
Further, oblique positioned at the second charging aperture of the evaporation cylinder lower part and the feedstock direction of third feed inlet
It sets up and forms angle between the evaporation cylinder body outer wall section.
According to the above aspect of the present invention, the present invention has at least the following advantages:
1, for evaporation cylinder body outer wall along transmission shafts to multiple second charging apertures are equipped at intervals with, the more material mouths charging added can
It avoids disposably increasing and feeds packing phenomenon caused by inlet amount, make rotor segment effective restraint liquid film flow pattern, guarantee evaporation
Thickness of liquid film on the inside of cylinder is uniform, is beneficial to improve the efficiency of evaporator；
2, when material is during concentration, concentration has an obvious gap to evaporation cylinder inboard wall material from top to bottom, under cylinder
Portion's evaporation efficiency reduces, and increases various concentration material from different second charging apertures or third feed inlet, can be effectively improved in cylinder
The concentration gradient of material；
3, second charging aperture and third feed inlet are cut in the external circumferential directions of evaporative cylinder, circumferential equably to arrange the
Two feed inlets and third feed inlet, reduce the usage quantity of liquid distributor, and can mitigate the load on transmission shaft and can reach makes
The purpose that material is evenly distributed；
4, evaporate cylinder lower part second charging aperture and third feed inlet feedstock direction be arranged obliquely, and with
Form an angle β between evaporation cylinder body outer wall section, can increase residence time of the material in evaporator, evaporate material sufficiently,
The size of angle of inclination beta and the quantity of second charging aperture can be arranged according to actual design operating condition.
To sum up, the vertical luwa evaporator of Multi-stage spiral of the invention charging is simple and reasonable, easy to operate, can be significant
Improve evaporation efficiency.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the vertical luwa evaporator of Multi-stage spiral charging of the invention；
Fig. 2 is the face the A-A ' cross-sectional view that cylinder lower part is evaporated in Fig. 1.
1 transmission device, 2 first charging aperture
3 rotor segment, 4 second charging aperture
5 gas phase discharge port, 6 liquid distributor
7 transmission shafts 8 evaporate cylinder
9 heating jacket, 10 liquid phase discharge port
11 third feed inlets
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
The vertical luwa evaporator of Fig. 1 and a kind of Multi-stage spiral charging shown in Fig. 2, including lower end offer liquid phase discharging
The evaporation cylinder 8 of mouth 10, the transmission device 1 on evaporation cylinder 8 and the heating jacket 9 outside evaporation cylinder 8, transmission
Device 1 drives the transmission shaft 7 inside evaporation cylinder 8 to rotate, and evaporates and successively opens up from top to bottom on 8 outer wall of cylinder along axial direction
There are first charging aperture 2 and several second charging apertures 4, the cloth liquid for feeding to first charging aperture 2 and carrying out cloth liquid is fixed on transmission shaft 7
Device 6, rotor segment 3 is equipped with below liquid distributor 6, and transmission shaft 7 is equipped with several arrangements corresponding with each second charging aperture 4
Rotor segment 3, if being uniformly provided in its outer circle circumferential direction on 8 outer wall of evaporation cylinder locating for each second charging aperture 4
Dry third feed inlet 11.
In order to which the distribution for entering material on evaporation 8 inner wall of cylinder is more uniform, each second charging aperture 4 and third into
The feedstock direction of material mouth 11 is tangent with the excircle of evaporation cylinder 8, wherein number when third feed inlet 11 is circumferentially evenly arranged
The flowing spiral journey that amount should be calculated according to the revolving speed of inlet amount and rotor segment 3 determines.
In order to make the position of second charging aperture 4 and third feed inlet 11 and 3 bottom of rotor segment keep a fixed spacing, avoid
Feed liquid impacts 3 bottom of rotor segment, reduces evaporation efficiency, second charging aperture 4 is between two adjacent rotor segments 3.
The case where in order to control charging, positioned at the second charging aperture 4 of evaporation 8 lower part of cylinder and the charging of third feed inlet 11
Direction is arranged obliquely and is formed between evaporation 8 outer wall tangent plane of cylinder angle β, and the size of angle β should be according to evaporation cylinder 8
Actual condition setting, the quantity of second charging aperture 4 and third feed inlet 11 according to actual process and should evaporate the size of cylinder 8
It determines, to increase the feed liquid entered from second charging aperture 4 or third feed inlet 11 in the residence time of evaporation 8 inner wall of cylinder.
The principle of the vertical luwa evaporator of Multi-stage spiral charging provided by the invention is as follows:
Multi-stage spiral charging vertical luwa evaporator consider evaporator size it is larger when, the thickness of liquid film from top to bottom by
The problem of gradual change is small, and evaporation 8 lower part liquid film flow pattern of cylinder is not restricted by rotor segment 3, by material by several on evaporation cylinder 8
Second charging aperture 4 and third feed inlet 11 along with evaporation 8 excircle of cylinder it is tangent to direction be added, first charging aperture 2 is pressed
Material is equably got rid of on evaporation 8 inner wall of cylinder by liquid distributor 6, is scraped in gravity, centrifugal force and rotation by normal inlet amount charging
Plate 3 is scraped under band effect, and feed liquid forms the film of rotation decline on evaporation 8 inner wall of cylinder, is not revolved when thickness of liquid film is thinning
When turning the restriction of scraper plate 3, it can be added according to feed liquid property and craftsmanship etc. by several second charging apertures 4 and third feed inlet 11 suitable
The supplement feed liquid of amount makes 3 effective restraint of rotor segment feed liquid film flow pattern, wherein no longer to use at each second charging aperture 4
6 cloth liquid of liquid distributor, and be utilized in locating for each second charging aperture 4 opened up on evaporation 8 outer wall of cylinder along its outer circle
Mitigate the load on transmission shaft 7 while the mode for several third feed inlets 11 being arranged circumferentially makes to feed uniform, considers
Into evaporation process, concentration changes greatly material from top to bottom, therefore, from each second charging aperture 4 or third feed inlet 11
The material of various concentration is added, can effectively reduce biggish concentration gradient when material evaporation, increases evaporation efficiency, further, since
3 thin film evaporator of rotor segment is single-pass evaporator, then needs second when the completion liquid evaporated for the first time is unsatisfactory for condition
Secondary even more evaporation may result in feed liquid and evaporating if feed liquid is added in evaporation Shi Juncong first charging aperture 2 every time
There are the time is longer on 8 inner wall of cylinder, so that making to evaporate the material knot wall being detained on 8 inner wall of cylinder to solve this problem can
Other second charging apertures 4 or 11 feed liquor of third feed inlet are selected according to the concentration of feed liquid, evaporation time are reduced, to be closed
The completion liquid of suitable concentration.
The above is only the preferred embodiment of the present invention, are not intended to restrict the invention, it is noted that this technology is led
For the those of ordinary skill in domain, without departing from the technical principles of the invention, several improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of vertical luwa evaporator of Multi-stage spiral charging, it is characterised in that: offer liquid phase including transmission shaft, lower end and go out
Evaporation cylinder, the transmission device and the heating jacket external set on evaporative cylinder on evaporation cylinder of material mouth, the transmission
Device drives the transmission shaft through the evaporation inner barrel to rotate, on the evaporation cylinder body outer wall from top to bottom along axial direction
Successively offer first charging aperture and several second charging apertures, be fixed on the transmission shaft to the first charging aperture feed into
The liquid distributor of row cloth liquid, is equipped with rotor segment below the liquid distributor, the transmission shaft be equipped with it is several with each described the
The rotor segment of the corresponding arrangement of two feed inlets, along it on the evaporation cylinder body outer wall locating for each described second charging aperture
Several third feed inlets are uniformly provided in outer circle circumferential direction.
2. the vertical luwa evaporator of Multi-stage spiral according to claim 1 charging, it is characterised in that: each described the
The feedstock direction of one feed inlet, second charging aperture and third feed inlet is tangent with the excircle of the evaporation cylinder.
3. the vertical luwa evaporator of Multi-stage spiral charging according to claim 1, it is characterised in that: second charging
Mouth is between two adjacent rotor segments.
4. the vertical luwa evaporator of Multi-stage spiral charging according to claim 1, it is characterised in that: be located at the evaporation
The second charging aperture of cylinder lower part and the feedstock direction of third feed inlet are arranged and external with the evaporative cylinder obliquely
Wall forms angle between section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470936.5A CN109499082A (en) | 2018-12-04 | 2018-12-04 | A kind of vertical luwa evaporator of Multi-stage spiral charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470936.5A CN109499082A (en) | 2018-12-04 | 2018-12-04 | A kind of vertical luwa evaporator of Multi-stage spiral charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109499082A true CN109499082A (en) | 2019-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470936.5A Pending CN109499082A (en) | 2018-12-04 | 2018-12-04 | A kind of vertical luwa evaporator of Multi-stage spiral charging |
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| Country | Link |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3064721A (en) * | 1959-05-09 | 1962-11-20 | Werkspoor Nv | Evaporators for producing a supersaturated solution |
| SU779768A1 (en) * | 1978-11-10 | 1980-11-15 | Предприятие П/Я М-5927 | Pneumatic dryer |
| CN202030772U (en) * | 2011-05-17 | 2011-11-09 | 内蒙古阜丰生物科技有限公司 | High fructose syrup evaporation device |
| CN204093064U (en) * | 2013-12-03 | 2015-01-14 | 温州市四方制药设备成套有限公司 | A kind of scrapper thin film evaporator |
| CN204840968U (en) * | 2015-06-26 | 2015-12-09 | 江苏华晶生物科技有限公司 | Film evaporator |
| CN206121190U (en) * | 2016-08-12 | 2017-04-26 | 徐州猎奇商贸有限公司 | Falling film evaporation ware that film forming is adjustable |
| CN106669209A (en) * | 2016-12-30 | 2017-05-17 | 天津横天生物科技有限公司 | Scraper-type film concentrator |
| CN206214803U (en) * | 2016-11-17 | 2017-06-06 | 无锡可为化工机械有限公司 | A kind of high-efficiency rotating scraper film evaporator |
| CN107362560A (en) * | 2016-12-30 | 2017-11-21 | 华北水利水电大学 | Falling film evaporator in the two phase countercurrent flow vertical tube of surrounding tangential admission |
| CN207745537U (en) * | 2017-10-13 | 2018-08-21 | 浙江东成生物科技股份有限公司 | Scraper evaporator |
| CN209519363U (en) * | 2018-12-04 | 2019-10-22 | 江苏拓驰工程技术开发有限公司 | A kind of vertical luwa evaporator of Multi-stage spiral charging |
-
2018
- 2018-12-04 CN CN201811470936.5A patent/CN109499082A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3064721A (en) * | 1959-05-09 | 1962-11-20 | Werkspoor Nv | Evaporators for producing a supersaturated solution |
| SU779768A1 (en) * | 1978-11-10 | 1980-11-15 | Предприятие П/Я М-5927 | Pneumatic dryer |
| CN202030772U (en) * | 2011-05-17 | 2011-11-09 | 内蒙古阜丰生物科技有限公司 | High fructose syrup evaporation device |
| CN204093064U (en) * | 2013-12-03 | 2015-01-14 | 温州市四方制药设备成套有限公司 | A kind of scrapper thin film evaporator |
| CN204840968U (en) * | 2015-06-26 | 2015-12-09 | 江苏华晶生物科技有限公司 | Film evaporator |
| CN206121190U (en) * | 2016-08-12 | 2017-04-26 | 徐州猎奇商贸有限公司 | Falling film evaporation ware that film forming is adjustable |
| CN206214803U (en) * | 2016-11-17 | 2017-06-06 | 无锡可为化工机械有限公司 | A kind of high-efficiency rotating scraper film evaporator |
| CN106669209A (en) * | 2016-12-30 | 2017-05-17 | 天津横天生物科技有限公司 | Scraper-type film concentrator |
| CN107362560A (en) * | 2016-12-30 | 2017-11-21 | 华北水利水电大学 | Falling film evaporator in the two phase countercurrent flow vertical tube of surrounding tangential admission |
| CN207745537U (en) * | 2017-10-13 | 2018-08-21 | 浙江东成生物科技股份有限公司 | Scraper evaporator |
| CN209519363U (en) * | 2018-12-04 | 2019-10-22 | 江苏拓驰工程技术开发有限公司 | A kind of vertical luwa evaporator of Multi-stage spiral charging |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190322 |