CN101954195A - Falling film evaporator - Google Patents
Falling film evaporator Download PDFInfo
- Publication number
- CN101954195A CN101954195A CN 201010164848 CN201010164848A CN101954195A CN 101954195 A CN101954195 A CN 101954195A CN 201010164848 CN201010164848 CN 201010164848 CN 201010164848 A CN201010164848 A CN 201010164848A CN 101954195 A CN101954195 A CN 101954195A
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- low head
- forced circulation
- upper cover
- baffle plate
- evaporimeter
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Abstract
The invention discloses a falling film evaporator which comprises an upper head tube plate, a lower head tube plate, a plurality of evaporating tubes, a forced circulating upper head, a forced circulating lower head and a forced circulating upper head baffle plate, wherein the upper head tube plate and the lower head tube plate are respectively arranged at the upper end part and the lower end part of a shell, the evaporating tubes are uniformly vertically arranged on an upper head and a lower head of the evaporator which are corresponding to each other, the lower head of the evaporator is provided with a feeding tube which is communicated with the inside of the upper head of the evaporator through pipelines passing through the upper head tube plate and the lower head tube plate; the lower head of the evaporator is also respectively provided with a forced circulating inlet and a forced circulating outlet which are respectively communicated with the insides of two parts of the forced circulating lower head isolated by a short plate; and the forced circulating upper head and the forced circulating upper head baffle plate, the forced circulating lower head and a forced circulating lower head baffle plate form a forced circulating system, materials to be evaporated are heated by four procedures in the forced circulation, and the heated heating materials enter a separator for flash evaporation.
Description
Technical field
The present invention relates to a kind of liquid concentration evaporation equipment technical field, the falling film evaporator that has the forced circulation function that especially a kind of liquid material adds from the bottom.
Background technology
At present, the liquid concentration evaporation operation evaporimeter that is used for industries such as chemical industry, medicine, light industry, food, petrochemical industry, metallurgy mainly contains two classes.First film-rising evaporator, the structure of such evaporimeter mainly comprises vaporiser body and is positioned at some steam-generating banks that vaporiser body inside matches, constitute heat tunnel between the steam-generating bank of vaporiser body inside, the heat tunnel two ends are communicated with the heat medium import and export respectively, and charging aperture is located at the vaporiser body bottom.It two is falling film evaporators, and this evaporation feed liquor mouth is in last endfeed, because processed feed liquid is in charging suitable for reading, its feed liquid is difficult in the vaporization chamber and distributes uniformly, make the liquid material not erupted uniformly, the disengagement area of material reduces, and causes the reduction of concentrated effect and efficient; In addition, charging suitable for reading makes charging aperture and circulation port be installed in falling film evaporation top, causes and installs and maintenance difficult; On the other hand, the material that reacts in evaporimeter produces the phenomenon of crystallization in course of reaction, if untimely dredging very easily stopped up evaporation tube, influences the carrying out of evaporation process, has reduced evaporation efficiency.Produce crystallization mode, not only need additionally to increase equipment, strengthened cost of investment and adopt concentrate forced circulation further to concentrate, increase floor space, and increase the complexity of production process.
Summary of the invention
The objective of the invention is to overcome the prior art falling film evaporator and can not be evaporated to the crystallization appearance,, must additionally increase by a cover forced circulation means, could solve the problem of crystallization for the needs of crystallization.The invention provides a kind of pipe plug plug and falling film evaporator structure that satisfies the crystallization needs of avoiding evaporating.
For realizing above purpose, the present invention has taked following technical scheme: a kind of falling film evaporator, comprise evaporator shell, be separately positioned on the upper cover tube sheet and the low head tube sheet of housing upper and lower end parts, and corresponding evaporimeter upper cover and evaporimeter low head, in housing, evenly vertically be laid with many evaporation tubes between upper cover tube sheet and the low head tube sheet, constitute heat tunnel between the adjacent evaporation tube, hull outside is respectively equipped with heating steam inlet and the distilled water outlet that communicates with heat tunnel, on the evaporimeter low head, be provided with feed pipe, communicate in the pipeline of this feed pipe by passing low head tube sheet and upper cover tube sheet and the evaporimeter upper cover; Place, axis on the upper cover tube sheet, in the evaporimeter upper cover is provided with the forced circulation upper cover, and the place, axis on the low head tube sheet, in the evaporimeter low head is provided with the forced circulation low head; The place is provided with the forced circulation upper cover baffle plate that upper cover is divided into four parts in forced circulation upper cover axis, in the forced circulation low head, be provided with the forced circulation low head baffle plate that low head is divided into four parts, forced circulation low head baffle plate is the T template, and it comprises long slab that is on the forced circulation low head diameter line and the short slab that is on the radius; On described evaporimeter low head, also be respectively equipped with forced circulation inlet and forced circulation outlet, this forced circulation inlet and forced circulation outlet communicate respectively with in the forced circulation low head two parts of being isolated by short slab, forced circulation upper cover and forced circulation upper cover baffle plate, forced circulation low head and forced circulation low head baffle plate are formed forced circulation system together, material to be evaporated is divided into four flow processs and is heated in forced circulation, the thermal material excessively after the heating enters separator and carries out flash distillation.
Be provided with the upper cover baffle plate on the axis in described evaporimeter upper cover, axis in the evaporimeter low head is provided with the low head baffle plate, described upper cover baffle plate and forced circulation upper cover baffle plate are coaxial setting, and the long slab of forced circulation low head baffle plate is vertical setting mutually with the low head baffle plate.
Be provided with distributor at described upper cover tube sheet upper surface, evenly be provided with the distributor exhaust outlet on this distributor.The effect of distributor is material to be evaporated to be distributed uniformly give evaporation tube, makes each evaporation tubes that enough materials to be evaporated can both be arranged; The effect of exhaust outlet is to prevent the space clustering of fixed gas between upper cover tube sheet and distributor, thereby resistance is increased, and reduces the efficient of distributing.
Also include the fixed gas blast pipe, this fixed gas blast pipe one end passes and is inserted in the evaporator shell from described low head tube sheet, and the other end is connected with fixed gas outlet on being arranged on the first side of evaporimeter lower seal.It is used to discharge the fixed gas in the evaporimeter
On described evaporimeter low head, be provided with the evaporimeter low head in the indirect steam outlet and the concentrated solution outlet that communicate.Material after the evaporation and concentration enters the evaporimeter low head, and concentrate enters separator by concentrated solution outlet, and the indirect steam of generation enters separator by the indirect steam outlet.
The present invention compared with prior art, have following advantage: the present invention compares with the similar falling film evaporator of prior art, the function that has possessed forced circulation, and the realization of this forced circulation function does not need additionally to increase equipment, do not need to increase floor space yet, but the improvement of on the basis of falling film evaporator, carrying out; Owing to adopted the structure of forced circulation, the obstruction of the device internal reaction material that can effectively avoid evaporating; The concentration of material is by inlet amount and evaporimeter decision itself after the tradition falling film evaporator evaporation and concentration, in the actual production process, often need concentrating degree high more good more, but increase along with concentrating degree, crystalline polamer is serious, phenomenon such as result in blockage easily, so handle by next process after can only being concentrated to a certain degree, adopt this cover technology, can merge into a cover operation to two cover operations, not only reduced the consumption of equipment and pipeline valve, but also reduced thermal loss, for this complete equipment, the interface that breaks down easily all is installed in the evaporimeter bottom, reduce maintenance capacity, guaranteed safety.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of falling film evaporator of the present invention;
Fig. 2 is the A-A cross section structure schematic diagram of falling film evaporator of the present invention;
Fig. 3 is the B-B cross section structure schematic diagram of falling film evaporator of the present invention;
Fig. 4 is a forced circulation schematic flow sheet of the present invention ();
Fig. 5 is a forced circulation schematic flow sheet of the present invention (two);
Description of reference numerals: 1-distributor exhaust outlet, 2-forced circulation upper cover baffle plate, 3-upper cover baffle plate, 4-forced circulation upper cover, 5-evaporimeter upper cover, 6-distributor exhaust outlet, the 7-evaporation tube, 8-evaporator shell, 9-fixed gas blast pipe, 10-distilled water outlet, the outlet of 11-fixed gas, the outlet of 12-indirect steam, the 13-concentrated solution outlet, 14-secondary concentrate is put net export, 15-low head baffle plate, 16-evaporimeter low head, 17-one-level loop exit, 18-forced circulation low head baffle plate, 181-long slab, the 182-short slab, 19-forced circulation low head, 20-second level material inlet, the outlet of 21-forced circulation, 22-forced circulation inlet, the 23-feed pipe, 24-low head tube sheet, 25-heating steam inlet, 26-upper cover tube sheet, the 27-distributor.
The specific embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also Fig. 1 to shown in Figure 3, a kind of falling film evaporator, comprise evaporator shell 8, be separately positioned on the upper cover tube sheet 26 and the low head tube sheet 24 of housing 8 upper and lower end parts, and corresponding evaporimeter upper cover 5 and evaporimeter low head 16, in housing 8, evenly vertically be laid with many evaporation tubes 7 between upper cover tube sheet 26 and the low head tube sheet 24, constitute heat tunnel between the adjacent evaporation tube 7, housing 8 outsides are respectively equipped with heating steam inlet 25 and the distilled water outlet 10 that communicates with heat tunnel, on evaporimeter low head 16, be provided with feed pipe 23, communicate in the pipeline of this feed pipe 23 by passing low head tube sheet 24 and upper cover tube sheet 26 and the evaporimeter upper cover 5; Place, axis on upper cover tube sheet 26, in the evaporimeter upper cover 5 is provided with forced circulation upper cover 4, and forced circulation low head 19 is located to be provided with in the axis on low head tube sheet 24, in the evaporimeter low head 16; The place is provided with the forced circulation upper cover baffle plate 2 that upper cover 4 is divided into four parts in forced circulation upper cover 4 axis, in forced circulation low head 19, be provided with the forced circulation low head baffle plate 18 that low head 19 is divided into four parts, forced circulation low head baffle plate 18 is the T template, and it comprises long slab 181 that is on forced circulation low head 19 diameter lines and the short slab 182 that is on the radius; On evaporimeter low head 16, also be respectively equipped with forced circulation inlet 22 and forced circulation outlet 21, this forced circulation inlet 22 and forced circulation outlet 21 communicate respectively with in forced circulation low head 19 two parts of being isolated by short slab 182, forced circulation upper cover 4 and forced circulation upper cover baffle plate 2, forced circulation low head 19 and forced circulation low head baffle plate 18 are formed forced circulation system together, material to be evaporated is divided into four flow processs and is heated in forced circulation, the thermal material excessively after the heating enters separator and carries out flash distillation.
For guaranteeing that the material uniform distribution to evaporator, is provided with distributor 27 at upper cover tube sheet 26 upper surfaces, evenly be provided with distributor exhaust outlet 1 on this distributor 27.
Also include fixed gas blast pipe 9, these fixed gas blast pipe 9 one ends pass and are inserted in the evaporator shell 8 from low head tube sheet 24, and the other end is connected with fixed gas outlet 11 on being arranged on evaporimeter low head 16 1 sides.
On the axis of evaporimeter upper cover 5, be provided with upper cover baffle plate 3; The axis of evaporimeter low head 16 is provided with low head baffle plate 15 upper cover baffle plates 3 and forced circulation upper cover baffle plate 2 is coaxial setting, and the long slab 181 of forced circulation low head baffle plate 18 is vertical setting mutually with low head baffle plate 15; Upper cover baffle plate 3 and low head baffle plate 5 are divided into independently evaporation region of left and right sides secondary with the evaporation tube 9 in the evaporator shell 8, the circulation discharging opening of first order independence evaporation region is connected with the next stage material inlet that is arranged on the vaporiser body lower end, the feed pipe 23 of first order independence evaporation region is arranged on the evaporimeter low head 16, communicate in the pipeline of feed pipe 23 by passing low head tube sheet 24 and upper cover tube sheet 26 and the evaporimeter upper cover 5, the one-level loop exit 17 of first order independence evaporation region is connected with second level material inlet 20 on being arranged on evaporimeter low head 16, and second level material inlet 20 is incorporated into upper cover 11 inside on the top of vaporiser body by a pipeline that passes low head tube sheet 24 and upper cover tube sheet 26; On second level independence evaporation region, evaporimeter low head 16, be respectively equipped with the secondary concentrate and put net export 14 and concentrated solution outlet 13 and indirect steam outlet 12, the effect that the secondary concentrate is put net export 14 is emptying, concentrated solution outlet 13 is the passages that lead to separator, concentrates material and steam in order to discharge.Adopt two-stage design, pass through baffle plate, two-stage independence evaporation region will be divided in the evaporator shell, in evaporation process, the concentration of the independent evaporation region material of each grade progressively increases, reduce the mixing of material, improved the efficient of evaporimeter, especially obvious at there being ebullioscopic solution to improve the evaporation efficiency effect.
Above-mentioned fixed gas outlet 11, indirect steam outlet 12, concentrated solution outlet 13, secondary concentrate are put the below that net export 14, one-level loop exit 17, second level material inlet 20, forced circulation outlet 21, forced circulation inlet 22, feed pipe 23 all are arranged on vaporizer body; Heating steam inlet 25 is arranged on evaporator shell 8 the latter halfs near the middle-end place, and distilled water outlet 10 is arranged on evaporator shell 8 near on the bottom part.
See also Fig. 4 and shown in Figure 5, four flow processs in the above-mentioned forced circulation are as follows: forced circulation upper cover baffle plate 2 is divided into four parts with the forced circulation upper cover 4 on falling film evaporator top, be respectively on 1 and 2 on, be in the both sides of upper cover baffle plate 2 on 3 and on 4 respectively, forced circulation low head baffle plate 18 is divided into four parts with the forced circulation low head 19 of falling film evaporator lower part, because forced circulation low head baffle plate 18 is T type baffle plates of an one, it comprises long slab 181 that is on forced circulation low head 19 diameter lines and the short slab 182 that is on the radius, short slab 182 is divided into half of forced circulation low head baffle plate 18 1 time and 4 times two parts, long slab 181 is divided into second half 2 times and 3 times, the preliminary material that concentrates enters forced circulation low head 19 from forced circulation inlet 22, because the effect of forced circulation low head baffle plate 18, material flows toward 1 from 1 time and finishes first flow process, on 2, finish second flow process again toward 2 current downflow, finish the 3rd flow process from 3 times toward 3, finish the 4th flow process toward 4 times on 4.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (5)
1. falling film evaporator, comprise evaporator shell (8), be separately positioned on the upper cover tube sheet (26) and the low head tube sheet (24) of housing (8) upper and lower end parts, and corresponding evaporimeter upper cover (5) and evaporimeter low head (16), in housing (8), evenly vertically be laid with many evaporation tubes (7) between upper cover tube sheet (26) and the low head tube sheet (24), adjacent evaporation tube constitutes heat tunnel between (7), housing (8) outside is respectively equipped with heating steam inlet (25) and the distilled water outlet (10) that communicates with heat tunnel, on evaporimeter low head (16), be provided with feed pipe (23), communicate in the pipeline of this feed pipe (23) by passing low head tube sheet (24) and upper cover tube sheet (26) and the evaporimeter upper cover (5);
It is characterized in that: go up at upper cover tube sheet (26), the place, axis in the evaporimeter upper cover (5) is provided with forced circulation upper cover (4), go up at low head tube sheet (24), the axis in the evaporimeter low head (16) locates to be provided with forced circulation low head (19); The place is provided with the forced circulation upper cover baffle plate (2) that upper cover (4) is divided into four parts in forced circulation upper cover (4) axis, in forced circulation low head (19), be provided with the forced circulation low head baffle plate (18) that low head (19) is divided into four parts, forced circulation low head baffle plate (18) is the T template, and it comprises and is in the long slab (181) on forced circulation low head (19) diameter line and is in short slab (182) on the radius; On evaporimeter low head (16), also be respectively equipped with forced circulation inlet (22) and forced circulation outlet (21), this forced circulation inlet (22) and forced circulation outlet (21) communicate respectively with in forced circulation low head (19) two parts of being isolated by short slab (182), forced circulation upper cover (4) and forced circulation upper cover baffle plate (2), forced circulation low head (19) and forced circulation low head baffle plate (18) are formed forced circulation system together, material to be evaporated is divided into four flow processs and is heated in forced circulation, the thermal material excessively after the heating enters separator and carries out flash distillation.
2. falling film evaporator as claimed in claim 1, it is characterized in that: be provided with upper cover baffle plate (3) on the axis in described evaporimeter upper cover (5), axis in the evaporimeter low head (16) is provided with low head baffle plate (15), described upper cover baffle plate (3) and forced circulation upper cover baffle plate (2) are coaxial setting, and the long slab (181) of forced circulation low head baffle plate (18) is vertical setting mutually with low head baffle plate (15).
3. falling film evaporator as claimed in claim 1 is characterized in that: be provided with distributor (27) at described upper cover tube sheet (26) upper surface, evenly be provided with distributor exhaust outlet (1) on this distributor (27).
4. falling film evaporator as claimed in claim 1, it is characterized in that: also include fixed gas blast pipe (9), these fixed gas blast pipe (9) one ends pass and are inserted in the evaporator shell (8) from described low head tube sheet (24), and the other end is connected with fixed gas outlet (11) on being arranged on evaporimeter low head (16) one sides.
5. falling film evaporator as claimed in claim 1 is characterized in that: on described evaporimeter low head (16), be provided with evaporimeter low head (16) in the indirect steam outlet (12) and the concentrated solution outlet (13) that communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010164848XA CN101954195B (en) | 2010-04-29 | 2010-04-29 | Falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010164848XA CN101954195B (en) | 2010-04-29 | 2010-04-29 | Falling film evaporator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101954195A true CN101954195A (en) | 2011-01-26 |
| CN101954195B CN101954195B (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010164848XA Expired - Fee Related CN101954195B (en) | 2010-04-29 | 2010-04-29 | Falling film evaporator |
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| Country | Link |
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| CN (1) | CN101954195B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104039408A (en) * | 2012-01-12 | 2014-09-10 | 住友化学株式会社 | Evaporator, evaporation system, and evaporation method |
| CN105074342A (en) * | 2013-02-19 | 2015-11-18 | 开利公司 | Evaporator distribution system and method |
| CN106039747A (en) * | 2016-07-13 | 2016-10-26 | 范亚平 | Vertical-type stock-solution outside tube falling-film evaporator |
| CN107008024A (en) * | 2017-05-02 | 2017-08-04 | 上海济俭工业设备有限公司 | A kind of process structure for the integrated evaporating column that can save energy effective acquisition clean steam |
| CN107308667A (en) * | 2017-07-28 | 2017-11-03 | 佛山德众制药机械有限公司 | A kind of isothermal economic benefits and social benefits concentration unit and its method for concentration |
| CN107441753A (en) * | 2017-09-04 | 2017-12-08 | 江苏永大化工机械有限公司 | Falling-film crystallizer |
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| US4925526A (en) * | 1986-06-25 | 1990-05-15 | A. Ahlstrom Corporation | Tube-type evaporator |
| CN2125439U (en) * | 1992-06-20 | 1992-12-23 | 沈善明 | Plate type heating falling-film evaporator |
| JPH07241402A (en) * | 1994-03-07 | 1995-09-19 | Hitachi Ltd | Evaporator |
| CN101204633A (en) * | 2007-07-17 | 2008-06-25 | 江苏纵横浓缩干燥设备有限公司 | Solution evaporation and concentration method and equipment thereof |
| CN201676541U (en) * | 2010-04-29 | 2010-12-22 | 广州市心德实业有限公司 | Falling film evaporator |
-
2010
- 2010-04-29 CN CN201010164848XA patent/CN101954195B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4925526A (en) * | 1986-06-25 | 1990-05-15 | A. Ahlstrom Corporation | Tube-type evaporator |
| CN2125439U (en) * | 1992-06-20 | 1992-12-23 | 沈善明 | Plate type heating falling-film evaporator |
| JPH07241402A (en) * | 1994-03-07 | 1995-09-19 | Hitachi Ltd | Evaporator |
| CN101204633A (en) * | 2007-07-17 | 2008-06-25 | 江苏纵横浓缩干燥设备有限公司 | Solution evaporation and concentration method and equipment thereof |
| CN201676541U (en) * | 2010-04-29 | 2010-12-22 | 广州市心德实业有限公司 | Falling film evaporator |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104039408A (en) * | 2012-01-12 | 2014-09-10 | 住友化学株式会社 | Evaporator, evaporation system, and evaporation method |
| CN104039408B (en) * | 2012-01-12 | 2015-11-25 | 住友化学株式会社 | Vaporising device, vapo(u)rization system and method for evaporating |
| CN105074342A (en) * | 2013-02-19 | 2015-11-18 | 开利公司 | Evaporator distribution system and method |
| CN105074342B (en) * | 2013-02-19 | 2018-09-07 | 开利公司 | Evaporator distribution system and method |
| US10215458B2 (en) | 2013-02-19 | 2019-02-26 | Carrier Corporation | Evaporator distribution system and method |
| CN106039747A (en) * | 2016-07-13 | 2016-10-26 | 范亚平 | Vertical-type stock-solution outside tube falling-film evaporator |
| CN107008024A (en) * | 2017-05-02 | 2017-08-04 | 上海济俭工业设备有限公司 | A kind of process structure for the integrated evaporating column that can save energy effective acquisition clean steam |
| CN107308667A (en) * | 2017-07-28 | 2017-11-03 | 佛山德众制药机械有限公司 | A kind of isothermal economic benefits and social benefits concentration unit and its method for concentration |
| CN107308667B (en) * | 2017-07-28 | 2022-08-05 | 佛山德众制药机械有限公司 | Isothermal double-effect concentration unit and concentration method thereof |
| CN107441753A (en) * | 2017-09-04 | 2017-12-08 | 江苏永大化工机械有限公司 | Falling-film crystallizer |
| CN107441753B (en) * | 2017-09-04 | 2020-07-28 | 江苏永大化工机械有限公司 | Falling film crystallizer |
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| Publication number | Publication date |
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| CN101954195B (en) | 2012-08-29 |
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Granted publication date: 20120829 Termination date: 20200429 |