CN106267869B - The falling film evaporator laterally fed - Google Patents
The falling film evaporator laterally fed Download PDFInfo
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- CN106267869B CN106267869B CN201510242227.1A CN201510242227A CN106267869B CN 106267869 B CN106267869 B CN 106267869B CN 201510242227 A CN201510242227 A CN 201510242227A CN 106267869 B CN106267869 B CN 106267869B
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- film evaporator
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Abstract
The present invention relates to chemical industry heating equipment fields, disclose a kind of falling film evaporator laterally fed, including：Housing, tube sheet, evaporation tube, fluid Supplying apparatus, tube sheet are arranged on the top of housing；Evaporation tube is multiple, and multiple evaporation tubes are vertically arranged in the housing, and the upper end of evaporation tube passes through tube sheet；The upper end of evaporation tube is equipped with guiding device；Fluid Supplying apparatus includes lead channel and divides feed pipe, lead channel is vertically arranged in the outer wall top of housing, and around entire housing, lead channel is uniformly provided with multiple points of feed inlets, feed inlet is divided to be arranged on the upper side wall of lead channel, the lower end of feed pipe is divided to pass vertically through a point feed inlet to stretch into lead channel, and divide the lower end of feed pipe close to the bottom of lead channel；Housing is equipped with multiple overflow ducts connected with lead channel.The configuration of the present invention is simple is compact, effectively reduces the height of equipment；Liquid flow flux is big, operates, is easy to maintain；Using the equipment liquid distribution rate is high, cloth film uniformly, be not easy to plug, be readily cleaned.
Description
Technical field
The present invention relates to chemical industry heating equipment field, more particularly to a kind of falling film evaporator laterally fed.
Background technology
Vertical tube falling evaporator is the round fixed tube-sheet exchanger of vertical type, as a kind of high-efficient evaporating unit with its spy
The advantages of having, is gradually widely used in petrochemical industry and metallurgy, light industry, food processing, medicine, sea water desalination, sewage disposal
The fields of grade.What it is due to falling film evaporator progress is membranaceous evaporation, so the intensity of heat exchange of falling film evaporator and production capacity are real
It is decided by the uniformity coefficient that liquid is distributed along heat-exchange tube in matter.So-called be uniformly distributed refers not only to liquid and is evenly distributed in
On whole pipes, to be also uniformly distributed along every pipe circumference and be maintained in entire tube length.Each pipe way liquid point
The uneven of cloth can cause to be fed insufficient pipe " dry wall " and scale formation and make the liquid film of remaining tubing blocked up, when liquid not
When can be evenly distributed in entire pipe surface, it also will appear the phenomenon that similar.To reach equally distributed purpose, in heat-exchange tube
Top using various forms of distributors, the structure quality of distributor will directly affect liquid can rapidly, steadily in pipe
Inner wall forms a film.The vertical tube falling evaporator liquid distribution of function admirable must satisfy at following 2 points.(1) operation possibility：It keeps
Each runner of distributor is unblocked, prevent fouling, crystallization, coking, polymerization, curing, precipitation, foaming, flash distillation, corrosion phenomena such as
It the proper flow that generate and cause to splash, is atomized, carries secretly, blocking so that collapsing, collapsing and destroy liquid and is uniformly distributed.
(2) it is evenly distributed：Enough distribution dot densities；The geometrical homogenization of distributed point distribution；The uniformity of flow between leaching drop point.
102805949 A of patent publication No. CN disclose a kind of high-efficiency falling film evaporation device of tangential admission, the falling film shell
One feed inlet of upper setting, sets part flow arrangement, makes on separating liquid to tube sheet in the housing, improves distributing homogeneity, due to
Liquid from vertical tube falling evaporator top inlet pipe collide baffle after there are one from axle center to the component velocity of peripheral direction, so liquid
Body will radially be assembled on distribution grid to periphery, make the liquid level on its edge that can make tube sheet in this way higher than central part
Pipe on edge it is larger by liquid measure, cause the uneven of liquid distribution.Patent announcement number is disclosed for CN201387271Y
A kind of liquid distribution device of falling film evaporator, including into nozzle, manifold, branch pipe, upper distributing disc, pull rod, distance sink tube, lower distribution
Disk and plug distributor connect a manifold in inlet tube lower end, and the both sides of manifold are equipped with branch pipe, in every branch pipe radially lower portion
In the range of be equipped with liquid flow hole；Upper distributing disc is equipped in the lower section of manifold and branch pipe and lower distributing disc, upper and lower distributing disc pass through pull rod
It is fixed on upper perforated plate with distance sink tube, plug distributor is equipped on the top of the heat exchanger tube on upper perforated plate, such structure
Feature is that liquid distribution rate is high, and film forming is uniform, but material is by be easy to causeing blocking, and knot when manifold and the branch pipe of both sides
Structure is complicated, and difficulty of processing is big, not easy cleaning, of high cost.Patent publication No. CN102805949A discloses a kind of tangential admission
High-efficiency falling film evaporation device, in being connected with annular retaining ring on tube sheet, annular retaining ring top is provided with umbrella distributor, the annular gear
The excircle diameter of circle and umbrella distributor is respectively less than the internal diameter of outer cover, although setting distributor and annular retaining ring that can subtract in this way
The impact force of slow liquid, improves heat transfer effect, but distributor and annular retaining ring have only used the space of significant proportion, directly reduces
The heat exchange area of evaporator.
To sum up, more than the characteristics of several fluid Supplying apparatus, plug-type distributor can be formed in single cell inner wall
Even liquid film, but flow resistance is big, easy plugging, and installation and repairing is inconvenient, is only applicable to processing cleaning material, is not suitable for processing not
Clean material.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of falling film evaporators for the lateral import for being suitable for handling various materials.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of falling film evaporator laterally fed, including：Shell
Body, tube sheet, evaporation tube, fluid Supplying apparatus, the tube sheet are arranged on the top of the housing；The evaporation tube is more to be multiple
A evaporation tube is vertically arranged in the housing, and the upper end of the evaporation tube passes through the tube sheet；The evaporation tube
Upper end is equipped with guiding device；The fluid Supplying apparatus includes lead channel and divides feed pipe, and the lead channel is vertically arranged in institute
The outer wall top of housing is stated, and around the entire housing, the lead channel is uniformly provided with multiple points of feed inlets, described point of charging
Mouth is arranged on the upper side wall of the lead channel, and the lower end for dividing feed pipe, which passes vertically through, described divides feed inlet to stretch into the feed liquor
In slot, and the lower end for dividing feed pipe is close to the bottom of the lead channel；The housing is equipped with the multiple and lead channel and connects
Logical overflow ducts.
Wherein, it is described that feed pipe is divided to be removably mounted in the lead channel.
Wherein, multiple impingement baffles are equipped in the lead channel, multiple impingement baffles are evenly arranged in the lead channel
Bottom.
Wherein, the impingement baffle is equipped with via hole.
Wherein, the depth ratio of the height of the impingement baffle and the lead channel is 1/3~3/5.
Wherein, the inner wall of the housing is set there are one overflow baffle, and the overflow baffle is fixed on the inner wall of the housing,
The overflow baffle forms cloth liquid channel with the inner walls and tube sheet.
Wherein, the overflow baffle is cylinder, and section is in class inverted " L " font.
Wherein, the evaporation tube is evenly arranged in the housing.
(3) advantageous effect
The falling film evaporator provided by the invention laterally fed, it is simple and compact for structure, effectively reduce the height of equipment；
Liquid flow flux is big, operates, is easy to maintain；Using the equipment liquid distribution rate is high, cloth film uniformly, be not easy to plug, be readily cleaned,
The arrangement quantity of evaporation tube can be increased, increase the heat exchange area of evaporator.
Description of the drawings
Fig. 1 is the half-sectional structure front view of the embodiment of the present invention；
Fig. 2 is the vertical view that the part of the embodiment of the present invention is cutd open；
Fig. 3 is the impingement baffle schematic diagram of the embodiment of the present invention.
In figure, 1：Tube sheet；2：Guiding device；3：Evaporation tube；4：Overflow baffle；5：Overflow ducts；6：Lead channel；7：Point into
Liquid pipe；71：Ring flange；8：Impingement baffle；81：Via hole；9：Combined feed mouth；10：Feed manifold；11：Housing；12：Support plate；
13：Divide feed inlet；20：Fluid Supplying apparatus.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
With reference to shown in Fig. 1 and 2, the falling film evaporator laterally fed of the invention, including：Housing 11, tube sheet 1, evaporation tube
3rd, fluid Supplying apparatus 20.Housing 11 is cylindrical shape, and tube sheet 1 is arranged on the top of housing 11, and 1 upper surface of tube sheet is pushed up with housing 11
The part at end forms cloth film room.Evaporation tube 3 is multiple, and multiple evaporation tubes 3 are vertically arranged in housing 11, and preferably evaporation tube is uniform
Arrangement.The upper end of evaporation tube 3 passes through tube sheet 1, sets multiple evaporation pores on tube sheet 1, and the upper end of evaporation tube 3 is from evaporation pore
Middle stretching, and using welding or the methods of connecing of rising is tightly connected with tube sheet 1.Guiding device 2 is equipped in the upper end of evaporation tube 3.Liquid
Body feeding 20 includes lead channel 6 and multiple points of feed pipes 7, in the present embodiment, annular of the lead channel 6 for an interior side opening
Enclosure slot, the internal diameter of toroidal shell slot is identical with the outer diameter of housing 11, and lead channel 6 is vertically arranged in the outer of housing 11 by welding
Wall top, and around entire housing 11, the side that lead channel 6 is open is using the lateral wall of housing 11 as shared side wall.Feed liquor
Slot 6 is uniformly provided with multiple points of feed inlets 13, and the quantity for dividing feed inlet 13 is identical with dividing feed pipe 7, divides feed pipe 7 for installing,
Specific to the present embodiment, the quantity for dividing feed inlet is 8.Feed inlet 13 is divided to be arranged on the upper side wall of lead channel 6, divides feed pipe 7
Lower end pass vertically through point feed inlet 13 and stretch into lead channel 6, and the lower end of feed pipe 7 is divided to export close to the bottom of lead channel 6.
Feed pipe 7 is divided to be used to connect with charging manifold 10, material is provided into feed well 6 by dividing feed pipe 7 from charging manifold 10.Shell
Body 11 is equipped with multiple overflow ducts 5 connected with lead channel 6, and overflow ducts 5 are the crest of weir close to 6 upper side wall of lead channel, are commonly used
Structure have rectangular weir, V-type weir and round bottom rectangular weir.
Further, feed pipe 7 is divided to be removably mounted in lead channel 6 by flange.Specifically, divide feed pipe 7
One ring flange 71 of lateral wall welded and installed, ring flange 71 and the upper side wall of lead channel 6 are linked together by bolt assembly, can
To be dismantled as needed.
Further, multiple impingement baffles 8 are equipped in lead channel 6, multiple impingement baffles 8 are evenly arranged in the bottom of lead channel 6,
In the present embodiment, the quantity of impingement baffle 8 is 16.Preferably, the upper edge of impingement baffle 8, which is higher than, divides the lower end of feed pipe 7 to export.Ginseng
According to shown in Fig. 3, impingement baffle 8 is equipped with via hole 81, and the section of via hole 81 is preferably circular, 5-30 millimeters a diameter of, excellent
Select 10-20 millimeters.Preferably, the depth ratio of the height of impingement baffle 8 and lead channel 6 is 1/3~3/5, such as the height of impingement baffle 8
1/3,3/7,1/2 and 3/5 for feed liquor groove depth 6.
Further, the inner wall of housing 11 is set there are one overflow baffle 4, and overflow baffle 4 is cylinder, and overflow baffle 4
Outer diameter is less than the internal diameter of housing 11.Overflow baffle 4 is fixed on the inner wall of housing 11, and overflow by multiple rectangle support plates 12
The lower edge of baffle 4 is higher than the upper surface of tube sheet 1, and overflow baffle 4 forms cloth liquid channel with 11 inner wall of housing and tube sheet 1.Cloth liquid leads to
The cross-sectional width in road is less than the minimum range of 11 inner wall of housing and evaporation tube 3.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, institute the difference lies in：Overflow baffle 4 is cylinder, and the upper end has method
Blue outer, making overflow baffle section, the flange outer of overflow baffle 4 is welded on one with the inner wall of housing 11 in class inverted " L " font
It rises, forms cloth liquid channel.
During use of the present invention, liquid is inputted by combined feed mouth 9, through feed manifold 10 by liquid distribute to point into
Expects pipe 7.Since lead channel 6 is arranged on the outside of housing 11, the distance of tube sheet 1 to housing tip in housing 11 greatly shortens,
The space of cloth film room also substantially reduces.As shown in arrow direction in Fig. 1, liquid from divide feed pipe 7 enter lead channel 6 bottom,
The bottom of lead channel 6 is equipped with impingement baffle 8, and local assault and agitation when preventing the liquid from entering lead channel 6,8 lower part of impingement baffle is opened
There is aperture that the liquid in lead channel 6 can be made circumferentially to flow to reduce liquid level drop therein.Liquid from lead channel 6 from the bottom to top
Slowly enter housing 11 from 5 overflow of overflow ducts.Since 6 annular radial area of section of lead channel is very big, liquid flow at this time
Fast very little, the sedimentation for being conducive to the fouls such as solid particle and floccule in liquid gather the bottom of tank type liquid feedway 20
Portion avoids above-mentioned foul and enters the influence heat transfer of evaporation tube 3.In addition it is detachable structure to divide feed pipe 7 and lead channel 6, is stopped work
When feed pipe 7 can will be divided to remove, can easily clear up the dirt of the bottom of lead channel 6, the books circulation face knot of the lead channel 6
The structure occasion dirtier especially suitable for big liquid measure and material.Make liquid in membranaceous along shell equipped with overflow baffle 4 with respect to overflow ducts 5
11 inner wall of body is flowed on tube sheet 1.Liquid enters evaporation tube 3 upwardly through evaporation tube guiding device 2 on tube sheet 1.It is effective in this way
Avoid liquid input it is too fast pour into evaporation tube 3, cause to feed non-uniform defect.Overflow baffle 4 occupies only tube sheet 1 and leans on
The space of the very little of nearly housing 11 can increase the arrangement quantity of evaporation tube in this way, increase the heat exchange area of evaporator.
(1) liquid is inputted by combined feed mouth, liquid is distributed into fluid Supplying apparatus through feeding manifold, liquid enters
The bottom of lead channel, then by the overflow ducts overflow that the lead channel with fluid Supplying apparatus is connected into housing, liquid flow
It is dynamic to mitigate, it avoids fluctuating；
(2) bottom of lead channel is equipped with impingement baffle, and impingement baffle lower part, which is provided with aperture, can make liquid in lead channel circumferentially
It flows to reduce liquid level drop therein；
(3) since the annular radial area of section of lead channel is very big, flow rate of liquid very little at this time is conducive in liquid
The sedimentation of the fouls such as solid particle and floccule gathers the bottom of tank type liquid distributor；
(4) feed pipe and lead channel is divided to be Detachable connection structure, when shut-down can will divide feed inlet to remove, can be easily
Clear up the dirt of feed liquor trench bottom；
(5) opposite overflow ducts make liquid be flowed on tube sheet along inner walls in membranaceous equipped with overflow baffle, tube sheet upper liquid
Body enters evaporation tube upwardly through evaporation tube guiding device, keeps charging uniform.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of falling film evaporator laterally fed, which is characterized in that including：Housing, tube sheet, evaporation tube, fluid Supplying apparatus,
The tube sheet is arranged on the top of the housing；The evaporation tube is multiple, and multiple evaporation tubes are vertically arranged in the shell
In body, and the upper end of the evaporation tube passes through the tube sheet；The upper end of the evaporation tube is equipped with guiding device；The liquid supply
Device includes lead channel and divides feed pipe, and the lead channel is vertically arranged in the outer wall top of the housing, and around entire institute
Housing is stated, the lead channel is uniformly provided with multiple points of feed inlets, the upper side wall that feed inlet is divided to be arranged on the lead channel, institute
The lower end for stating point feed pipe passes vertically through and described feed inlet is divided to stretch into the lead channel, and the lower end for dividing feed pipe is close
The bottom of the lead channel；The housing is equipped with multiple overflow ducts connected with the lead channel.
2. the falling film evaporator as described in claim 1 laterally fed, which is characterized in that described that feed pipe is divided removably to pacify
In the lead channel.
3. the falling film evaporator as described in claim 1 laterally fed, which is characterized in that be equipped in the lead channel multiple anti-
Punching, multiple impingement baffles are evenly arranged in the bottom of the lead channel.
4. the falling film evaporator as claimed in claim 3 laterally fed, which is characterized in that the impingement baffle is equipped with conducting
Hole.
5. the falling film evaporator laterally fed as claimed in claim 3, which is characterized in that the height of the impingement baffle with it is described
The depth ratio of lead channel is 1/3~3/5.
6. the falling film evaporator as described in claim 1 laterally fed, which is characterized in that there are one the inner wall of the housing is set
Overflow baffle, the overflow baffle are fixed on the inner wall of the housing, the overflow baffle and the inner walls and tube sheet shape
Into cloth liquid channel.
7. the falling film evaporator as claimed in claim 6 laterally fed, which is characterized in that the overflow baffle is cylinder, and
Section is in class inverted " L " font.
8. the falling film evaporator as described in claim 1 laterally fed, which is characterized in that the evaporation tube is evenly arranged in institute
It states in housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242227.1A CN106267869B (en) | 2015-05-13 | 2015-05-13 | The falling film evaporator laterally fed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242227.1A CN106267869B (en) | 2015-05-13 | 2015-05-13 | The falling film evaporator laterally fed |
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| Publication Number | Publication Date |
|---|---|
| CN106267869A CN106267869A (en) | 2017-01-04 |
| CN106267869B true CN106267869B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510242227.1A Active CN106267869B (en) | 2015-05-13 | 2015-05-13 | The falling film evaporator laterally fed |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683025A (en) * | 1986-02-10 | 1987-07-28 | The Graver Company | Method and apparatus to convert a long tube vertical evaporator to a falling film evaporator |
| CN101898045A (en) * | 2010-06-02 | 2010-12-01 | 苏州桥立环境科技有限公司 | Feed liquid distribution film forming device of falling film evaporator |
| CN203447787U (en) * | 2013-08-09 | 2014-02-26 | 上海森松新能源设备有限公司 | Liquid distributor of falling film evaporation device |
| CN203591601U (en) * | 2013-11-28 | 2014-05-14 | 陕西新星食品机械有限公司 | Pipe-type falling film evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2298762T3 (en) * | 2003-07-04 | 2008-05-16 | Sinorgchem Co., Shandong | PROCESS TO PREPARE 4-AMINODYPHENYLAMINE. |
-
2015
- 2015-05-13 CN CN201510242227.1A patent/CN106267869B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4683025A (en) * | 1986-02-10 | 1987-07-28 | The Graver Company | Method and apparatus to convert a long tube vertical evaporator to a falling film evaporator |
| CN101898045A (en) * | 2010-06-02 | 2010-12-01 | 苏州桥立环境科技有限公司 | Feed liquid distribution film forming device of falling film evaporator |
| CN203447787U (en) * | 2013-08-09 | 2014-02-26 | 上海森松新能源设备有限公司 | Liquid distributor of falling film evaporation device |
| CN203591601U (en) * | 2013-11-28 | 2014-05-14 | 陕西新星食品机械有限公司 | Pipe-type falling film evaporator |
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| CN106267869A (en) | 2017-01-04 |
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