CN210845319U - Novel falling film evaporator - Google Patents
Novel falling film evaporator Download PDFInfo
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- CN210845319U CN210845319U CN201921639414.3U CN201921639414U CN210845319U CN 210845319 U CN210845319 U CN 210845319U CN 201921639414 U CN201921639414 U CN 201921639414U CN 210845319 U CN210845319 U CN 210845319U
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Abstract
The utility model discloses a novel falling film evaporator, which relates to the evaporator field, the utility model arranges an upper tube plate on the upper part of an evaporating pot for the vapor-liquid separation of the previous effect, a second-stage vapor-liquid separation chamber of the upper tube plate and a lower tube plate, vapor flowing out from a juice vapor pipe of a lower first-stage vapor-liquid separation chamber flows into a vapor inlet pipe, the vapor and liquid are separated again, liquid separated from the second-stage vapor-liquid separation chamber and feed liquid flowing out from a discharge pipe of the upper first-stage evaporating pot enter the lower first-stage vapor-liquid separation chamber together for vapor-liquid separation, the separated liquid flows into a circulating liquid chamber at the lower end for temporary storage, the separated vapor enters the upper second-stage vapor-liquid separation chamber through the juice vapor pipe for circulating second-stage vapor-liquid separation to form circulating vapor-liquid separation, the utility model combines a heat transfer tube tank and a vapor-liquid separation tank into a whole, reduces the area of the equipment, and adopts the internal small circulating liquid separation, the problems of large heat transfer of traditional large circulation quantity and large electric energy consumption are solved.
Description
Technical Field
The utility model relates to a falling film evaporation field, in particular to novel falling film evaporator.
Background
The falling film evaporation system is widely applied in various fields of industrial production, and is greatly developed under the efforts of domestic industrial production and equipment industry in the last two decades, particularly, the scale of the alcohol and fuel ethanol industry is leaped forward suddenly, the yield of a byproduct DDGS is increased proportionally, the DDS quantity needing to be concentrated is increased by more than 5 times of that of a main product, the requirement on the capacity of falling film evaporation equipment is higher and higher, the appearance of equipment is larger and higher, and the capital investment in the early stage of equipment is higher and higher.
For historical reasons, the design of domestic falling-film evaporators is more traditional, and further, due to the rapid development of industrial production, the development of equipment industry is relatively lagged behind, the design parameters cannot be corrected and optimized in the industrial production, the appearance and parameter design is completely lost in textbooks, and even small equipment is adopted for appearance amplification treatment, so that the defects that the equipment is too slow to develop, the design parameters are old and the appearance is bloated, and the design needs to be optimized.
The existing falling film evaporator adopts parameters and appearance design introduced by textbooks, and heat transfer tubes and a vapor-liquid separation chamber are arranged relatively independently, so that the equipment investment is large and the occupied area is large. And large circulation quantity is adopted for heat transfer, so that the electric energy consumption is large.
Disclosure of Invention
The utility model aims to provide a: the novel falling-film evaporator solves the problems that the existing falling-film evaporator adopts parameters and appearance design introduced by textbooks, heat transfer tubes and a vapor-liquid separation chamber are arranged relatively independently, equipment investment is large, occupied area is large, heat transfer with large circulation amount is adopted, and electric energy consumption is large.
The utility model adopts the technical scheme as follows:
a novel falling film evaporator comprises an evaporation tank, an upper tube plate is arranged at the top end in the evaporation tank, a lower tube plate is arranged in the middle of the evaporation tank,
a primary steam-liquid separation chamber is arranged at the lower end of the lower tube plate, a secondary steam-liquid separation chamber is arranged between the upper tube plate and the lower tube plate, an opening is formed in the side wall of the primary steam-liquid separation chamber and connected with a juice steam pipe, an opening is formed in the side wall of the secondary steam-liquid separation chamber and connected with a steam inlet pipe, and the juice steam pipe is connected with the steam inlet pipe;
and a circulating liquid chamber is arranged below the lower tube plate, an opening is arranged on the bottom surface of the circulating liquid chamber and connected with a circulating pipe, the circulating pipe is communicated with the second-stage vapor-liquid separation chamber at the upper end, and an opening is also arranged on the bottom surface of the circulating liquid chamber and connected with a discharge pipe.
The traditional falling film evaporator is provided with a heat transfer tube array tank and a vapor-liquid separation tank separately, so that the traditional equipment is overstaffed in structure and large in occupied area. The utility model relates to a novel falling film evaporator adopts reasonable structure, unites two into one falling film evaporator's heat transfer tubulation jar and vapour-liquid knockout drum.
Specifically, a shell at the upper part of an evaporation tank is enlarged, an upper tube plate is arranged for the last-effect vapor-liquid separation, a second-stage vapor-liquid separation chamber of the upper tube plate and a lower tube plate is provided, vapor flowing out from a juice vapor pipe of a lower first-stage vapor-liquid separation chamber flows into a vapor inlet pipe, the vapor and the liquid are separated again, liquid separated from the second-stage vapor-liquid separation chamber and feed liquid flowing out from a discharge pipe of the upper first-stage evaporation tank enter the lower first-stage vapor-liquid separation chamber together for vapor-liquid separation, the separated liquid flows into a circulating liquid chamber at the lower end for temporary storage, the separated vapor enters an upper second-stage vapor-liquid separation chamber through a juice vapor pipe for circulating second-stage vapor-liquid separation to form circulating vapor-liquid separation, when the liquid in the circulating liquid chamber exceeds a preset leaf line, part of juice is pumped out by a circulating pipe and enters the upper second-liquid separation chamber, and the vapor-, and circulating vapor-liquid separation is formed, when the concentration of the juice in the circulating liquid chamber reaches a preset value, the discharge pipe is opened, and part of the juice is pumped out and enters the next-stage evaporation tank.
The utility model discloses will transfer heat tubulation jar and vapour-liquid knockout drum unite two into one, reduced the area of equipment, and owing to taken the separation of inside microcirculation vapour and liquid, solved traditional large circulation volume and transferred heat, problem that power consumption is big.
The utility model discloses in alcohol brewing technology production line or other technology production lines, set up a plurality of evaporating pots generally, establish ties each other and form multistage falling film evaporation, the discharging pipe of the last evaporating pot of order is connected to next-level technology or connects the holding vessel.
Furthermore, a valve is arranged on the discharge pipe, and the valve is in an intermittently closed operation state.
A circulation vapor-liquid separation process is formed in each evaporation tank, the discharge pipe is opened in the evaporation tank at regular time when the concentration reaches a preset value, part of feed liquid is taken and enters the next-stage evaporation tank, and therefore a valve which is opened and closed intermittently is arranged on the discharge pipe.
Further, the discharge pipe is connected to the circulating liquid chamber of the next-stage evaporation tank.
Specifically, the evaporating pot is connected to the next-stage evaporating pot, the discharging pipe of the evaporating pot is connected to the circulating liquid chamber of the next-stage evaporating pot, so that the material liquid of the evaporating pot can directly enter the circulating liquid chamber of the next-stage evaporating pot, and the circulating vapor-liquid separation of the next-stage evaporating pot is not influenced.
Furthermore, an opening is arranged at the joint of the lower tube plate at the bottom end of the primary vapor-liquid separation chamber and the side wall of the evaporation tank to connect a condensate pipe.
Specifically, the condensate pipe is connected to an external condensate tank to discharge condensate formed by condensation of water or other impurities on the lower tube plate.
Furthermore, an opening is formed in the bottom end of the joint of the inner wall and the outer wall of the secondary vapor-liquid separation chamber, and the return pipe is connected to the upper-stage evaporator.
The second grade vapour-liquid separation room is structurally similar to the heat transfer shell and tube jar of traditional falling film evaporator except that the height is different from the heat transfer shell and tube jar of traditional falling film evaporator, and specifically speaking is provided with inner wall and outer wall, the lateral wall intercommunication of inner wall lower extreme and one-level vapour-liquid separation room, the tube-shape top surface that the inner wall formed does not set up the apron, the outer wall sets up the outside of the tube-shape that forms at the inner wall and has certain distance with the inner wall, and the base is connected to the outside of inner wall, the utility model discloses in, will a return pipe is connect out to the junction of the inner wall of second grade vapour-liquid separation room and outer wall, and correspondingly, the position that the admission pipe should locate than the return pipe is higher, the liquid that subsides in second grade vapour-liquid separation room is collected to in returning to last one-level evaporator.
Further, heat exchange tubes are arranged in the upper tube plate and the lower tube plate in the evaporating tank, and heat exchange media are arranged in the heat exchange tubes.
The upper tube plate and the lower tube plate are provided with through holes for the passing of gas and liquid, and the heat exchange tubes for heat exchange medium to pass through are arranged in the plates and used for absorbing heat.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model relates to a novel falling film evaporator, which solves the problems that the existing falling film evaporator adopts parameters and appearance design introduced by textbooks, heat transfer tubes and a vapor-liquid separation chamber are arranged relatively independently, the equipment investment is large, and the occupied area is large;
2. the utility model relates to a novel falling film evaporator has solved current falling film evaporator and has adopted parameter and appearance design that textbook introduced, takes the heat transfer of big circulation volume, the big problem of power consumption.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a diagram of a prior art apparatus of the present invention;
in the figure, 1-an evaporation tank, 2-an upper tube plate, 3-a lower tube plate, 4-a first-stage vapor-liquid separation chamber, 5-a second-stage vapor-liquid separation chamber, 6-a circulating liquid chamber, 7-a circulating tube, 8-a discharging tube, 9-a condensed liquid tube, 10-a return tube, 201-a heat exchange tube, 401-a juice vapor tube, 501-a vapor inlet tube, 502-an inner wall and 503-an outer wall.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The present invention will be described in detail with reference to fig. 1 and 2.
Example 1
A novel falling film evaporator, as shown in figure 1, comprises an evaporation tank 1, an upper tube plate 2 is arranged at the top end in the evaporation tank 1, a lower tube plate 3 is arranged at the middle part in the evaporation tank 1,
a primary steam-liquid separation chamber 4 is arranged at the lower end of the lower tube plate 3, a secondary steam-liquid separation chamber 5 is arranged between the upper tube plate 2 and the lower tube plate 3, an opening is formed in the side wall of the primary steam-liquid separation chamber 4 and connected with a steam inlet pipe 401, an opening is formed in the side wall of the secondary steam-liquid separation chamber 5 and connected with a steam inlet pipe 501, and the steam inlet pipe 501 is connected with the steam inlet pipe 401;
and a circulating liquid chamber 6 is arranged below the lower tube plate 3, an opening is arranged on the bottom surface of the circulating liquid chamber 6 and connected with a circulating tube 7, the circulating tube 7 is communicated with the second-stage vapor-liquid separation chamber 5 at the upper end, and an opening is also arranged on the bottom surface of the circulating liquid chamber 6 and connected with a discharge tube 8.
The traditional falling film evaporator is provided with a heat transfer tube array tank and a vapor-liquid separation tank separately, so that the traditional equipment is overstaffed in structure and large in occupied area. The utility model relates to a novel falling film evaporator adopts reasonable structure, unites two into one falling film evaporator's heat transfer tubulation jar and vapour-liquid knockout drum.
The utility model discloses a theory of operation does: compared with a heat transfer tube array tank of a traditional falling film evaporator, the shell at the upper part of an evaporation tank 1 is enlarged, an upper tube plate 2 is arranged for the vapor-liquid separation of the previous effect, the vapor flowing out from a juice vapor tube 401 of a lower primary vapor-liquid separation chamber 4 flows into a secondary vapor-liquid separation chamber 5 of the upper tube plate 2 and a lower tube plate 3 in a vapor inlet tube 501 for the vapor-liquid separation again, simultaneously, the liquid separated from the secondary vapor-liquid separation chamber 5 and the feed liquid flowing out from a discharge tube 8 of the upper primary evaporation tank 1 enter the lower primary vapor-liquid separation chamber 4 for the vapor-liquid separation together, the separated liquid flows into a circulating liquid chamber 6 at the lower end for temporary storage, the separated vapor enters the secondary vapor-liquid separation chamber 5 at the upper end through the juice vapor tube 401 for the circulating secondary vapor-liquid separation to form circulating vapor-liquid separation, when the liquid in the circulating liquid chamber 6 exceeds a preset page line, a part of juice is extracted by a circulating tube 7 and enters, and the juice and the steam which is input upwards through the juice steam pipe 401 are subjected to steam-liquid separation again to form circulating steam-liquid separation, when the concentration of the juice in the circulating liquid chamber 6 reaches a preset value, the discharge pipe 8 is opened, and part of the juice is extracted to enter the next-stage evaporation tank 1.
The utility model discloses in alcohol brewing technology production line or other technology production lines, set up a plurality of evaporating pots 1 generally, establish ties each other and form multistage falling film evaporation, the discharging pipe 8 of the last evaporating pot 1 of order is connected to next-level technology or connects the holding vessel.
Example 2
This example is a further description of example 1, the tapping pipe 8 being provided with a valve which is operated in an intermittently closed state.
A circulation vapor-liquid separation process is formed in each evaporation tank 1, the discharge pipe 8 is also opened in the evaporation tank at regular time when the concentration reaches a preset value, part of feed liquid is taken and enters the next-stage evaporation tank 1, and therefore, a valve which is opened and closed intermittently is arranged on the discharge pipe 8.
Example 3
This example is a further illustration of example 1, the discharge line 8 being connected to the circulation liquid chamber 6 of the next-stage evaporation tank 1.
Specifically, the evaporation tank 1 is connected to the next-stage evaporation tank 1, and the discharge pipe 8 is connected to the circulating liquid chamber 6 of the next-stage evaporation tank 1, so that the feed liquid of the evaporation tank 1 can directly enter the circulating liquid chamber 6 of the next-stage evaporation tank 1, and the circulating vapor-liquid separation of the next-stage evaporation tank 1 is not affected.
Example 4
A novel falling film evaporator comprises an evaporation tank 1, as shown in figure 1, an upper tube plate 2 is arranged at the top end in the evaporation tank 1, a lower tube plate 3 is arranged at the middle part in the evaporation tank 1,
a primary steam-liquid separation chamber 4 is arranged at the lower end of the lower tube plate 3, a secondary steam-liquid separation chamber 5 is arranged between the upper tube plate 2 and the lower tube plate 3, an opening is formed in the side wall of the primary steam-liquid separation chamber 4 and connected with a steam inlet pipe 401, an opening is formed in the side wall of the secondary steam-liquid separation chamber 5 and connected with a steam inlet pipe 501, and the steam inlet pipe 501 is connected with the steam inlet pipe 401;
and a circulating liquid chamber 6 is arranged below the lower tube plate 3, an opening is arranged on the bottom surface of the circulating liquid chamber 6 and connected with a circulating tube 7, the circulating tube 7 is communicated with the second-stage vapor-liquid separation chamber 5 at the upper end, and an opening is also arranged on the bottom surface of the circulating liquid chamber 6 and connected with a discharge tube 8.
An opening is arranged at the joint of the lower tube plate 3 at the bottom end of the primary vapor-liquid separation chamber 4 and the side wall of the evaporation tank 1 to connect a condensate pipe 9.
Specifically, the condensate pipe 9 is connected to an external condensate tank to discharge condensate formed by condensation of water or other impurities on the lower tube plate 3.
Example 5
A novel falling film evaporator comprises an evaporation tank 1, as shown in figure 1, an upper tube plate 2 is arranged at the top end in the evaporation tank 1, a lower tube plate 3 is arranged at the middle part in the evaporation tank 1,
a primary steam-liquid separation chamber 4 is arranged at the lower end of the lower tube plate 3, a secondary steam-liquid separation chamber 5 is arranged between the upper tube plate 2 and the lower tube plate 3, an opening is formed in the side wall of the primary steam-liquid separation chamber 4 and connected with a steam inlet pipe 401, an opening is formed in the side wall of the secondary steam-liquid separation chamber 5 and connected with a steam inlet pipe 501, and the steam inlet pipe 501 is connected with the steam inlet pipe 401;
and a circulating liquid chamber 6 is arranged below the lower tube plate 3, an opening is arranged on the bottom surface of the circulating liquid chamber 6 and connected with a circulating tube 7, the circulating tube 7 is communicated with the second-stage vapor-liquid separation chamber 5 at the upper end, and an opening is also arranged on the bottom surface of the circulating liquid chamber 6 and connected with a discharge tube 8.
Further, the bottom end of the junction between the inner wall 502 and the outer wall 503 of the secondary vapor-liquid separation chamber 5 is provided with an opening to receive a return pipe 10, and the return pipe 10 is connected to the upper stage evaporator 1.
The secondary vapor-liquid separation chamber 5 is different in height from the heat transfer shell and tube of the conventional falling film evaporator, similar in structure to the heat transfer shell and tube tank of a conventional falling film evaporator, specifically, provided with an inner wall 502 and an outer wall 503, the lower end of the inner wall 502 is communicated with the side wall of the first-stage vapor-liquid separation chamber 4, the cylindrical top surface formed by the inner wall 502 is not provided with a cover plate, the outer wall 503 is arranged outside the cylinder formed by the inner wall 502 at a distance from the inner wall 502, and the bottom edge is connected to the outside of the inner wall 502. in the utility model, a return pipe 10 is connected at the joint of the inner wall 502 and the outer wall 503 of the second-stage vapor-liquid separation chamber 5, correspondingly, the inlet pipe 501 should be located higher than the return pipe 10, said return pipe 10 collecting the liquid settled in the secondary vapour-liquid separation chamber 5, and returns to the evaporator 1 of the previous stage, thereby forming the circulating vapor-liquid separation between the adjacent evaporators 1.
Example 6
The embodiment is a further description of embodiment 1, heat exchange tubes 201 are respectively arranged in the upper tube plate 2 and the lower tube plate 3 in the evaporation tank 1, and heat exchange media are arranged in the heat exchange tubes 201.
The upper tube plate 2 and the lower tube plate 3 are provided with through holes for passing gas and liquid, and the heat exchange tubes 201 which pass through heat exchange media are arranged in the plates and used for absorbing heat.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (6)
1. A novel falling film evaporator comprises an evaporation tank (1), and is characterized in that: an upper tube plate (2) is arranged at the top end in the evaporating pot (1), a lower tube plate (3) is arranged in the middle part in the evaporating pot (1),
a primary steam-liquid separation chamber (4) is arranged at the lower end of the lower tube plate (3), a secondary steam-liquid separation chamber (5) is arranged between the upper tube plate (2) and the lower tube plate (3), an opening is formed in the side wall of the primary steam-liquid separation chamber (4) and connected with a juice steam pipe (401), an opening is formed in the side wall of the secondary steam-liquid separation chamber (5) and connected to a steam inlet pipe (501), and the juice steam pipe (401) is connected to the steam inlet pipe (501);
a circulating liquid chamber (6) is arranged below the lower tube plate (3), an opening is arranged on the bottom surface of the circulating liquid chamber (6) to connect a circulating tube (7), the circulating tube (7) is communicated with a secondary vapor-liquid separation chamber (5) at the upper end, and an opening is further arranged on the bottom surface of the circulating liquid chamber (6) to connect a discharge tube (8).
2. A novel falling film evaporator according to claim 1 wherein: the discharge pipe (8) is provided with a valve which is in an intermittently closed running state.
3. A novel falling film evaporator according to claim 1 wherein: the discharge pipe (8) is connected to a circulating liquid chamber (6) of the next-stage evaporation tank (1).
4. A novel falling film evaporator according to claim 1 wherein: the joint of the lower tube plate (3) at the bottom end of the primary vapor-liquid separation chamber (4) and the side wall of the evaporation tank (1) is provided with an opening for receiving a condensate pipe (9).
5. A novel falling film evaporator according to claim 1 wherein: an opening is formed in the bottom end of the joint of the inner wall (502) and the outer wall (503) in the secondary vapor-liquid separation chamber (5) to connect a return pipe (10), and the return pipe (10) is connected to the upper-stage evaporation tank (1).
6. A novel falling film evaporator according to claim 1 wherein: the evaporator is characterized in that heat exchange tubes (201) are arranged in the upper tube plate (2) and the lower tube plate (3) in the evaporator tank (1), and heat exchange media are arranged in the heat exchange tubes (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639414.3U CN210845319U (en) | 2019-09-29 | 2019-09-29 | Novel falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921639414.3U CN210845319U (en) | 2019-09-29 | 2019-09-29 | Novel falling film evaporator |
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| Publication Number | Publication Date |
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| CN210845319U true CN210845319U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921639414.3U Active CN210845319U (en) | 2019-09-29 | 2019-09-29 | Novel falling film evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730935A (en) * | 2021-09-23 | 2021-12-03 | 成都鸿展慧智科技有限公司 | Alcohol evaporation juice steam waste heat recycling process |
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2019
- 2019-09-29 CN CN201921639414.3U patent/CN210845319U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730935A (en) * | 2021-09-23 | 2021-12-03 | 成都鸿展慧智科技有限公司 | Alcohol evaporation juice steam waste heat recycling process |
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