CN209809546U - Split type end effect evaporator with water cooling function - Google Patents
Split type end effect evaporator with water cooling function Download PDFInfo
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- CN209809546U CN209809546U CN201920050688.2U CN201920050688U CN209809546U CN 209809546 U CN209809546 U CN 209809546U CN 201920050688 U CN201920050688 U CN 201920050688U CN 209809546 U CN209809546 U CN 209809546U
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- water
- separator
- secondary steam
- water cooler
- baffle
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 230000000694 effects Effects 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000011552 falling film Substances 0.000 claims description 22
- 238000001704 evaporation Methods 0.000 abstract description 13
- 230000008020 evaporation Effects 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 8
- 230000008676 import Effects 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a split type end effect evaporimeter that possesses water-cooling function, including tubular falling liquid film heater, tubular falling liquid film heater's upper end is provided with the solution import, and tubular falling liquid film heater's lower extreme is connected with the separator through the connecting pipe, is provided with the secondary steam export in the upper end of separator, is provided with the solution export in the bottom of separator, and the upper end of separator is connected with the water cooler of a vertical setting, and water cooler upper portion has been seted up and has been circulated the water inlet, has seted up on the lateral wall of water cooler lower part and has circulated the water export down, and a baffle is sheltered from to secondary steam export top, baffle and secondary steam export separation setting. The secondary steam flashed by the separator directly enters the water cooler through a secondary steam outlet to be absorbed by circulating water, so that the low-pressure state in the separator is continuously maintained, and the evaporation efficiency is greatly improved.
Description
The technical field is as follows:
the utility model belongs to the technical field of the evaporimeter, in particular to split type end effect evaporimeter that possesses water-cooling function.
Background art:
the secondary steam temperature of the last effect evaporator of the tubular falling film evaporator group is very low, and the secondary steam can not be used for heating other devices, and is generally condensed and absorbed by circulating upper water in a water cooler. In the original configuration mode, the end effect evaporator and the water cooler are arranged in parallel in a split mode (namely the end effect evaporator and the water cooler are two single devices), and secondary steam of the end effect evaporator is introduced into the water cooler through a steam connecting pipeline. Practice proves that the split parallel configuration mode has the following main problems:
(1) because the temperature of the final-effect secondary steam is very low (50 ℃), and the secondary steam density is very low, about 0.083kg/m under the final-effect vacuum condition (absolute pressure-0.012 MPa)3However, the volume is very large, and the resistance of the pipeline can generate great influence on the flow of secondary steam by adopting a pipeline connection mode, so that the steam flow is not smooth; meanwhile, the secondary steam in the final effect always remains in a considerable part in the separation chamber of the final effect and cannot be rapidly discharged, and the factors can seriously reduce the evaporation efficiency of the final effect.
(2) The last-effect secondary steam is led out from the pipeline by opening an opening on the side wall of the separation chamber of the last-effect evaporator, so that the secondary steam flashed from the liquid level of the separation chamber can intensively flow to the opening of the pipeline, and the concentration of the steam on the side is extremely large; the demister evenly distributed along the circumference of the separation chamber cannot simultaneously carry out effective defoaming, and the working load of the demister near the secondary steam outlet is too heavy, so that the demister near the secondary steam outlet is fast in abrasion, and the service life is reduced; the practical situation is that a considerable part of secondary steam enters the water cooler without being subjected to vapor-liquid separation, so that the final-effect secondary steam carries alkali, the alkali content of circulating cooling water is increased, the subsequent use of circulating water is influenced, the alkali loss is increased, and the production cost is increased.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the split type end-effect evaporator with the water cooling function is provided, secondary steam can be rapidly cooled, and the phenomenon that the evaporation efficiency is reduced due to the fact that the air pressure in the separator is increased is avoided.
In order to solve the technical problem, the utility model discloses a technical scheme is: split type end effect evaporator that possesses water-cooling function includes: the upper end of the tubular falling film heater is provided with a solution inlet, the lower end of the tubular falling film heater is connected with a separator which is arranged on one side of the tubular falling film heater in parallel through a connecting pipe, a secondary steam outlet is arranged at the top end of the separator, a solution outlet is arranged at the bottom of the separator, the upper end of the separator is an upper cone, the upper cone is hermetically connected with a vertically arranged water cooler, the secondary steam outlet is inserted into the water cooler, an annular water collecting tank is formed between the outer side wall of the upper cone body and the inner side wall of the water cooler, the upper part of the water cooler is provided with a circulating upper water inlet, the lower side wall of the water cooler is provided with a circulating lower water outlet, the circulating lower water outlet is communicated with the annular water collecting tank, a baffle is shielded above the secondary steam outlet, the baffle and the secondary steam outlet are separately arranged, and the area of an annular gap between the baffle and the secondary steam outlet is not smaller than that of the secondary steam outlet.
As a preferred scheme, the upper end of the water cooler is provided with a vacuumizing port.
As a preferred scheme, a demister is arranged in the separator, the demister is fully distributed on the whole circumferential plane of the separator, the separator is divided into an upper space and a lower space, the lower space is connected with the lower end of the tubular falling film heater through a connecting pipe, and the upper space is communicated with a water cooler through a secondary steam outlet.
Preferably, the lower end of the tubular falling film heater is connected with a liquid collector, and the connecting pipe is connected with the liquid collector and the separator.
As a preferred scheme, the baffle is an upward convex round spherical panel, and the outer edge of the baffle is positioned right above the water collecting tank.
Preferably, the water cooler is a direct contact water cooler.
The utility model has the advantages that: the secondary steam flashed by the separator directly enters the water cooler without being guided by a pipeline and is quickly absorbed by circulating water, the secondary steam outlet is arranged at the top of the separator, and the secondary steam enters the water cooler without any resistance, so that the flow is smooth. Get into the water cooler back along the water cooler evenly upwards, with the reverse direct contact of circulating water, the secondary steam is by rapid condensation aquatic, no longer has the secondary steam that is detained to exist in the separator, continuously keeps the low pressure state in the separator, and evaporation efficiency can improve greatly.
Description of the drawings:
the following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention.
In fig. 1: 1. the device comprises a tubular falling film heater, 2, a solution inlet, 3, a connecting pipe, 4, a separator, 401, an upper cone, 5, a secondary steam outlet, 6, a solution outlet, 7, a water cooler, 8, a circulating water feeding inlet, 9, a circulating water discharging outlet, 10, a baffle, 11, a supporting rod, 12, a water collecting tank, 13, a vacuumizing port, 14, a demister, 15, a liquid collector, 16, a support, 17 and a steam inlet.
The specific implementation mode is as follows:
the following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 1, the split type end effect evaporator with water cooling function includes: the tubular falling film heater comprises a tubular falling film heater 1, wherein a solution inlet 2 is arranged at the upper end of the tubular falling film heater 1, a steam inlet 17 is arranged on the side wall of the tubular falling film heater 1, the lower end of the tubular falling film heater 1 is connected with a separator 4 which is arranged on one side of the tubular falling film heater 1 in parallel through a connecting pipe 3, a secondary steam outlet 5 is arranged at the top end of the separator 4, a solution outlet 6 is arranged at the bottom of the separator 4, an upper cone 401 is arranged at the upper end of the separator 4, a vertically arranged water cooler 7 is hermetically connected onto the upper cone 401, the secondary steam outlet 5 is inserted into the water cooler 7, an annular water collecting tank 12 is formed between the outer side wall of the upper cone 401 and the inner side wall of the water cooler 7, a circulating upper water inlet 8 is arranged at the upper part of the water cooler 7, a circulating lower water outlet 9 is arranged on the lower side wall of the water cooler 7, the circulating, the baffle 10 is connected with the separator 4 through a support rod 11, and also can be connected with the water cooler 7 through the support rod 11, the baffle 10 is arranged separately from the secondary steam outlet 5, and the area of the annular gap between the baffle 10 and the secondary steam outlet 5 is not less than the area of the secondary steam outlet 5.
The secondary steam flashed by the separator 4 directly enters the water cooler 7 without being guided by a pipeline to be quickly absorbed by circulating water, the secondary steam outlet 4 is arranged at the top of the separator 4, and the secondary steam entering the water cooler 7 cannot be subjected to any resistance, so that the flow is very smooth. Get into evenly upwards along the water cooler behind the water cooler 7, with the reverse direct contact of circulating water, the secondary steam is condensed into water fast, 4 no longer have the secondary steam that is detained to exist in the separator, continuously keep the low pressure state in the separator 4, evaporation efficiency can improve greatly.
And the upper end of the water cooler 7 is provided with a vacuumizing port 13. The vacuumizing port 13 is used for being connected with a vacuum pump to vacuumize the interior of the water cooler 7, so that secondary steam in the separator 4 quickly enters the water cooler 7 in a negative pressure state to be condensed and absorbed, escape of the secondary steam of flash evaporation solution in the separation chamber 4 is quickened, and evaporation efficiency is improved.
A demister 14 is arranged in the separator 4, the demister 14 is fully distributed on the whole circumferential plane of the separator 4 to divide the separator 4 into an upper space and a lower space, the lower space is connected with the lower end of the tubular falling film heater 1 through a connecting pipe 3, and the upper space is communicated with a water cooler 7 through a secondary steam outlet 5.
Demister 14 can effectively separate alkali liquid drop and partial foam among the secondary steam, because demister 14 is covered with the whole circumference plane of separator 4, and secondary steam export 5 is located the top of disengagement chamber 4, therefore the secondary steam can pass through the demister uniformly, makes the defoaming load balance of each position of demister, avoids local defoaming to load too high and leads to the phenomenon that the defoaming does not make the secondary steam take alkali at all, ensures the defoaming effect, prolongs demister 14's life simultaneously.
The lower end of the tubular falling film heater 1 is connected with a liquid collector 15, and the connecting pipe 3 is connected with the liquid collector 15 and the separator 4.
The liquid collector 15 is used for collecting the solution in the boiling point state, so that the solution is subjected to primary flash evaporation in the liquid collector 15, then the solution in the boiling state on the solution liquid surface is sent to the separator 4 through the connecting pipe 3 for flash evaporation, the solution entering the separator 4 is ensured to be in the boiling state, and the flash evaporation effect is ensured.
The baffle 10 is a round spherical panel protruding upwards, and the outer edge of the baffle 10 is positioned right above the water collecting tank 12.
The baffle 10 firstly prevents cooling water from entering the separator 4, secondly condenses secondary steam, the upward convex spherical shape enables condensed water formed on the lower surface to flow towards the edge along the arc-shaped lower surface and drop into the water collecting tank 12, and the circular outer edge can uniformly distribute the secondary steam to enable the secondary steam to uniformly enter the water cooler 7.
The water cooler 7 is a direct contact water cooler, and the condensation absorption efficiency is higher.
And the bottoms of the liquid collector 15 and the separator 4 are respectively provided with a support 16, and the supports 16 enable the liquid collector 15 and the separator 4 to be stably and fixedly connected on a steel structure.
The utility model discloses the theory of operation is: as shown in fig. 1, steam is introduced into the shell side of the tubular falling film heater 1 from the steam inlet 17, and then the solution is introduced into the tube side of the tubular falling film heater 1 from the solution inlet 2, heating with steam film in shell pass of the tubular falling film heater 1, collecting the heated solution in the liquid collector 15, evaporating the liquid in the liquid collector 15 for the first time, sending the solution with boiling liquid surface into a separator 4, wherein the diameter and the volume of the separator 4 are both larger than those of a liquid collector 5, after the high-temperature solution enters the separator 4, the high-temperature solution is boiled and flashed violently to form a large amount of secondary steam, the secondary steam moves upwards, after vapor-liquid separation is carried out by the demister 14, the secondary steam flows out from the secondary steam outlet 5 and enters the water cooler 7 through the guide of the baffle plate 10, and flows upwards along the water cooler 7, meets the circulating condensed water in the water cooler 7, is condensed into water and flows into the water collecting tank 12.
The distance between the baffle 10 and the secondary steam outlet 5 is adjusted according to actual needs, and the requirement is met by the secondary steam discharge speed, so that the baffle 10 can prevent condensed water and circulating cooling water from entering the separator 4, and the secondary steam can be uniformly distributed around the water cooler 7 when entering the water cooler 7, so that the secondary steam can be uniformly in full contact with the circulating cooling water in the water cooler 7 and can be rapidly condensed.
Because the water cooler 7 condenses the secondary steam quickly, and the secondary steam enters the water cooler 7 from the separator 4 without any resistance, the pressure in the separator 4 can be kept at a low level, and the solution evaporation cannot be inhibited because the pressure rises due to untimely discharge of the secondary steam, so that the solution is continuously kept to be evaporated efficiently, and the solution evaporation efficiency is improved.
The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (5)
1. Split type end effect evaporator that possesses water-cooling function includes: the tubular falling film heater is characterized in that an upper cone (401) is arranged at the upper end of the separator (4), a vertically arranged water cooler (7) is hermetically connected to the upper cone (401), the secondary steam outlet (5) is inserted into the water cooler (7), an annular water collecting tank (12) is formed between the outer side wall of the upper cone (401) and the inner side wall of the water cooler (7), and a circulating water feeding inlet (8) is formed in the upper part of the water cooler (7), a circulating water outlet (9) is formed in the side wall of the lower portion of the water cooler (7), the circulating water outlet (9) is communicated with an annular water collecting tank (12), a baffle (10) is shielded above the secondary steam outlet (5), the baffle (10) and the secondary steam outlet (5) are arranged in a separated mode, the area of an annular gap between the baffle (10) and the secondary steam outlet (5) is not smaller than that of the secondary steam outlet (5), and a vacuumizing port (13) is formed in the upper end of the water cooler (7).
2. The split type end-effect evaporator with the water cooling function as claimed in claim 1, wherein a demister (14) is arranged in the separator (4), the demister (14) is distributed on the whole circumferential plane of the separator (4) to divide the separator (4) into an upper space and a lower space, the lower space is connected with the lower end of the tubular falling film heater (1) through a connecting pipe (3), and the upper space is communicated with the water cooler (7) through a secondary steam outlet (5).
3. The split type end-effect evaporator with water cooling function according to claim 1, characterized in that a liquid collector (15) is connected to the lower end of the tubular falling film heater (1), the inner diameter of the liquid collector (15) is larger than the diameter of the tubular falling film heater (1), and the connecting pipe (3) is connected with the liquid collector (15) and the separator (4).
4. The split type end-effect evaporator with the water cooling function as claimed in claim 1, wherein the baffle (10) is a circular spherical panel protruding upwards, and the outer edge of the baffle (10) is located right above the water collecting tank (12).
5. The split type end effect evaporator with the water cooling function as claimed in claim 1, wherein the water cooler (7) is a direct contact type water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920050688.2U CN209809546U (en) | 2019-01-11 | 2019-01-11 | Split type end effect evaporator with water cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920050688.2U CN209809546U (en) | 2019-01-11 | 2019-01-11 | Split type end effect evaporator with water cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209809546U true CN209809546U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920050688.2U Active CN209809546U (en) | 2019-01-11 | 2019-01-11 | Split type end effect evaporator with water cooling function |
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| CN (1) | CN209809546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569000A (en) * | 2019-01-11 | 2019-04-05 | 江苏普格机械有限公司 | The split type last evaporator for having water cooling function |
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2019
- 2019-01-11 CN CN201920050688.2U patent/CN209809546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569000A (en) * | 2019-01-11 | 2019-04-05 | 江苏普格机械有限公司 | The split type last evaporator for having water cooling function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215600 HAIBA Road, Daxin Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: China National Chemical Equipment Technology (Suzhou) Co.,Ltd. Country or region after: China Address before: 215600 Jiangsu Puge Machinery Co., Ltd., HAIBA Road, Daxin Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: JIANGSU PUGE MACHINERY Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |