CN212700588U - Multi-effect falling film evaporation concentrator unit system - Google Patents
Multi-effect falling film evaporation concentrator unit system Download PDFInfo
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- CN212700588U CN212700588U CN202021112924.8U CN202021112924U CN212700588U CN 212700588 U CN212700588 U CN 212700588U CN 202021112924 U CN202021112924 U CN 202021112924U CN 212700588 U CN212700588 U CN 212700588U
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Abstract
The utility model relates to the technical field of liquid evaporation concentration, in particular to a multi-effect falling film evaporation concentration unit system, which comprises a steam preheater, a condensate preheater, a plurality of falling film evaporation tanks and a steam circulation system; in practical application, the steam preheater and the condensate preheater are used for preheating input liquid raw materials, the preheated liquid raw materials enter the falling film evaporation tank for evaporation, the evaporated steam enters the falling film evaporation tank again along with the steam circulating system for heat exchange again, the evaporated raw materials are discharged from a discharge hole of the falling film evaporation tank, and the evaporation efficiency of the falling film evaporation tank is effectively improved; the evaporation effect is better through a plurality of falling film evaporation tanks; hot steam used by the falling film evaporation tank can be recycled through a steam circulation system; the utility model discloses can improve the liquid concentration who obtains, improve heating medium's heat utilization rate simultaneously.
Description
Technical Field
The utility model relates to a liquid evaporative concentration technical field specifically is a concentrated unit system of multiple-effect falling liquid film evaporation.
Background
At present, the falling film evaporator is to feed the material liquid from the heating chamber to the pipe box, and then the material liquid is uniformly distributed into each heat exchange pipe through the liquid distribution and film forming device, and the material liquid flows from top to bottom in a uniform film shape under the action of gravity, vacuum induction and air flow. In the flowing process, the shell-pass heating medium is heated and vaporized, the generated steam and the liquid phase enter a separation chamber of the evaporator together, the steam and the liquid are fully separated, the steam enters a condenser for condensation (single-effect operation) or enters a next-effect evaporator as the heating medium, so that the multi-effect operation is realized, and the liquid phase is discharged from the separation chamber.
However, the concentration of the liquid obtained by the concentration in the falling film evaporator is not very high, and the heat energy utilization efficiency of the heating medium is not very high, so that a new structure is urgently needed, the principle of falling film evaporation can be utilized, the obtained liquid concentration can be improved, and the heat energy utilization rate of the heating medium can be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to foretell not enough, provide a can improve the liquid concentration who obtains, improve heating medium's heat utilization rate's multiple-effect falling liquid film evaporation concentrator unit system simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a multiple-effect falling film evaporation concentrator unit system, includes steam preheater, congeals water preheater, a plurality of falling film evaporating pot and steam circulation system, congeal water preheater's output and pass through the pipeline intercommunication congeal water preheater input, congeal water preheater output and pass through the pipeline intercommunication falling film evaporating pot input, steam circulation system intercommunication falling film evaporating pot output and input.
Furthermore, at least one falling film evaporation tank is arranged, and the steam circulating system corresponds to the falling film evaporation tanks one to one.
Further, a sealing plate and an upper tube plate are horizontally arranged in the falling film evaporation tank, and the falling film evaporation tank is divided into a jacket cooling area, a falling film evaporation area and a steam heating area from top to bottom by the sealing plate and the upper tube plate.
Further, the jacket cooling area is provided with a cooling area liquid raw material feeding pipe.
Furthermore, an evaporation area steam inlet pipe and an evaporation area steam circulation inlet pipe are arranged at the upper part of the falling film evaporation area, a falling film evaporation assembly is arranged in the falling film evaporation area, and an evaporation area condensate water drain pipe is arranged at the lower part of the falling film evaporation area.
Further, steam heating district upper portion is provided with the zone of heating liquid raw materials inlet pipe and the steam cycle outlet duct of the zone of heating, steam heating district middle part is provided with the stirring subassembly, steam heating district bottom is provided with the zone of heating liquid raw materials discharging pipe, the water pre-heater that congeals is connected the zone of heating liquid raw materials inlet pipe.
Further, the stirring subassembly includes vertical locating liquid level inductor in the steam heating district locates (mixing) shaft in the steam heating district inlays to be located agitator motor on the falling liquid film evaporation tank inner wall, agitator motor output shaft drive connects the (mixing) shaft, be provided with stirring vane on the (mixing) shaft, liquid level inductor electric connection agitator motor.
Further, the steam circulation system comprises a gas-liquid separator and a steam compressor, the steam circulation outlet pipe of the heating area is connected with the input end of the gas-liquid separator, the output end of the gas-liquid separator is connected with the input end of the steam compressor, and the output end of the steam compressor is connected with the steam circulation inlet pipe of the evaporation area.
The utility model has the advantages that:
in practical application, the steam preheater and the condensate preheater are used for preheating input liquid raw materials, the preheated liquid raw materials enter the falling film evaporation tank for evaporation, the evaporated steam enters the falling film evaporation tank again along with the steam circulating system for heat exchange again, the evaporated raw materials are discharged from a discharge hole of the falling film evaporation tank, and the evaporation efficiency of the falling film evaporation tank is effectively improved; the evaporation effect is better through a plurality of falling film evaporation tanks; hot steam used by the falling film evaporation tank can be recycled through a steam circulation system; the utility model discloses can improve the liquid concentration who obtains, improve heating medium's heat utilization rate simultaneously.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of a middle falling film evaporator of the present invention;
reference numerals: a steam preheater 1; a condensate preheater 2; a falling film evaporator 3; a sealing plate 31; an upper tube sheet 32; a jacket cooling zone 33; cooling zone liquid feedstock feed 331; a falling film evaporation zone 34; an evaporation zone steam inlet pipe 341; an evaporation zone vapor cycle inlet line 342; an evaporation zone condensate drain 343; a steam heating zone 35; heating zone liquid feedstock feed line 351; heating zone steam cycle exit 352; a heating zone liquid raw material discharge pipe 353; a steam cycle system 4; a gas-liquid separator 41; a vapor compressor 42; a liquid level sensor 5; a stirring shaft 51; a stirring motor 52; the stirring blade 53.
Detailed Description
As shown in fig. 1 and 2, a multi-effect falling film evaporation concentrator unit system, includes steam preheater 1, congeals water preheater 2, a plurality of falling film evaporating pot 3 and steam circulation system 4, congeal water preheater 2's output and pass through the pipeline intercommunication congeal water preheater 2 input, congeal water preheater 2 output and pass through the pipeline intercommunication falling film evaporating pot 3 input, steam circulation system 4 intercommunication falling film evaporating pot 3 output and input.
In practical application, the steam preheater 1 and the condensate preheater 2 are used for preheating input liquid raw materials, the preheated liquid raw materials enter the falling film evaporation tank 3 for evaporation, the evaporated steam enters the falling film evaporation tank 3 again along with the steam circulating system 4 for heat exchange, the evaporated raw materials are discharged from a discharge hole of the falling film evaporation tank 3, and the evaporation efficiency of the falling film evaporation tank 3 is effectively improved; the evaporation effect is better through a plurality of falling film evaporation tanks 3; hot steam used by the falling film evaporation tank 3 can be recycled through a steam circulation system 4; the utility model discloses can improve the liquid concentration who obtains, improve heating medium's heat utilization rate simultaneously.
As shown in fig. 1 and 2, at least one falling film evaporation tank 3 is provided, and the steam circulation system 4 corresponds to the falling film evaporation tanks 3 one by one; in this embodiment, the falling film evaporator 3 circularly evaporates the falling film through the two or more steam circulating systems 4, so that the evaporation effect is faster and the evaporation efficiency is higher.
As shown in fig. 1 and 2, a sealing plate 31 and an upper tube plate 32 are horizontally arranged in the falling film evaporation tank 3, and the sealing plate 31 and the upper tube plate 32 divide the falling film evaporation tank 3 into a jacket cooling zone 33, a falling film evaporation zone 34 and a steam heating zone 35 from top to bottom; in this example, the liquid feed is heated by a steam heating zone 35 and then directed back to a jacketed cooling zone 33 to pass through a falling film evaporation zone 34 for evaporation.
As shown in fig. 1 and 2, the jacket cooling zone 33 is provided with a cooling zone liquid feedstock feed pipe 331; in this embodiment, the liquid raw material heated by the steam heating zone 35 enters the falling film evaporator 3 through the liquid raw material feeding pipe 331 in the cooling zone, so that the evaporation efficiency is higher.
As shown in fig. 1 and fig. 2, an evaporation area steam inlet pipe 341 and an evaporation area steam circulation inlet pipe 342 are arranged at the upper part of the falling film evaporation area 34, a falling film evaporation component is arranged in the falling film evaporation area 34, and an evaporation area condensate water outlet pipe 343 is arranged at the lower part of the falling film evaporation area 34; in this embodiment, the steam circulation system 4 is communicated with the steam inlet pipe 342 through the steam circulation in the evaporation area, and the falling film evaporation tank 3 into which the hot steam enters along the steam inlet pipe 341 and the steam circulation in the evaporation area 342 exchanges heat with the liquid raw material and the hot steam through the falling film evaporation assembly, and the generated steam is discharged through the condensed water drain pipe 343 in the evaporation area, so that the falling film evaporation effect is better. (falling film evaporation components are prior art and therefore not described in detail)
As shown in fig. 1 and fig. 2, a heating-zone liquid raw material feeding pipe 351 and a heating-zone steam circulation gas outlet pipe 352 are arranged at the upper part of the steam heating zone 35, a stirring assembly is arranged at the middle part of the steam heating zone 35, a heating-zone liquid raw material discharging pipe 353 is arranged at the bottom of the steam heating zone 35, and the condensate preheater 2 is connected with the heating-zone liquid raw material feeding pipe 351; in this embodiment, the liquid raw material that gets into for heating area liquid raw material inlet pipe 351 through steam heating district 35 heats continuously, and stirring subassembly stirs liquid raw material among the heating process, and the vapor of production discharges from heating area steam cycle outlet pipe 352 and gets into steam circulation system 4, and the raw materials after falling film evaporation is accomplished is discharged from heating area liquid raw material discharging pipe 353.
As shown in fig. 1 and fig. 2, the stirring assembly includes a liquid level sensor 5 vertically disposed in the steam heating zone 35, a stirring shaft 51 disposed in the steam heating zone 35, and a stirring motor 52 embedded on the inner wall of the falling film evaporation tank 3, an output shaft of the stirring motor 52 is in driving connection with the stirring shaft 51, a stirring blade 53 is disposed on the stirring shaft 51, and the liquid level sensor 5 is electrically connected to the stirring motor 52; in this embodiment, when liquid level inductor 5 senses falling film evaporating pot 3 in the liquid level rise, continuously heat for the liquid raw material that heats up the entering of district liquid raw material inlet pipe 351 through steam heating district 35, in the heating process, agitator motor 52 drive (mixing) shaft 51 is rotatory, and (mixing) shaft 51 drives stirring vane 53 rotatory, makes liquid raw material heat more evenly faster, and falling film evaporation effect is better.
As shown in fig. 1 and fig. 2, the steam circulation system 4 includes a gas-liquid separator 41 and a steam compressor 42, the heating-area steam circulation outlet pipe 352 is connected to an input end of the gas-liquid separator 41, an output end of the gas-liquid separator 41 is connected to an input end of the steam compressor 42, and an output end of the steam compressor 42 is connected to the evaporation-area steam circulation inlet pipe 342; in this embodiment, the vapor discharged from the heating-zone vapor circulation outlet pipe 352 is subjected to gas-liquid separation by the vapor-liquid separator 41, the separated gas enters the vapor compressor 42 to be pressurized, and the pressurized gas enters the falling film evaporation zone 34 from the evaporation zone vapor circulation inlet pipe 342 to be recycled, so that the concentration of the obtained liquid is increased, and the heat energy utilization rate of the heating medium is increased.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope and spirit of the invention as defined in the accompanying claims.
Claims (8)
1. A multi-effect falling film evaporation concentrator unit system is characterized in that: including steam preheater (1), congeal water preheater (2), a plurality of falling film evaporating pot (3) and steam circulating system (4), congeal the output of water preheater (2) and pass through the pipeline intercommunication congeal water preheater (2) input, congeal water preheater (2) output and pass through the pipeline intercommunication falling film evaporating pot (3) input, steam circulating system (4) intercommunication falling film evaporating pot (3) output and input.
2. The multi-effect falling film evaporation concentrator unit system of claim 1, wherein: at least one falling film evaporation tank (3) is arranged, and the steam circulation system (4) corresponds to the falling film evaporation tanks (3) one by one.
3. The multi-effect falling film evaporation concentrator unit system of claim 1, wherein: a sealing plate (31) and an upper tube plate (32) are horizontally arranged in the falling film evaporation tank (3), and the falling film evaporation tank (3) is divided into a jacket cooling area (33), a falling film evaporation area (34) and a steam heating area (35) from top to bottom by the sealing plate (31) and the upper tube plate (32).
4. The multi-effect falling film evaporation concentrator unit system of claim 3, wherein: the jacket cooling zone (33) is provided with a cooling zone liquid feedstock feed pipe (331).
5. The multi-effect falling film evaporation concentrator unit system of claim 4, wherein: an evaporation area steam inlet pipe (341) and an evaporation area steam circulation inlet pipe (342) are arranged at the upper part of the falling film evaporation area (34), a falling film evaporation assembly is arranged in the falling film evaporation area (34), and an evaporation area condensate water drain pipe (343) is arranged at the lower part of the falling film evaporation area (34).
6. The multi-effect falling film evaporation concentrator unit system of claim 5, wherein: the steam heating district (35) upper portion is provided with heating district liquid feedstock inlet pipe (351) and heating district steam cycle outlet duct (352), steam heating district (35) middle part is provided with the stirring subassembly, steam heating district (35) bottom is provided with heating district liquid feedstock discharging pipe (353), condensate water preheater (2) are connected heating district liquid feedstock inlet pipe (351).
7. The multi-effect falling film evaporation concentrator unit system of claim 6, wherein: stirring subassembly is including vertical locating liquid level inductor (5) in the steam heating district (35) locates (mixing) shaft (51) in the steam heating district (35) inlays to be located agitator motor (52) on falling film evaporating pot (3) inner wall, agitator motor (52) output shaft drive is connected (mixing) shaft (51), be provided with stirring vane (53) on (mixing) shaft (51), liquid level inductor (5) electric connection agitator motor (52).
8. The multi-effect falling film evaporation concentrator unit system of claim 6, wherein: the steam circulation system (4) comprises a gas-liquid separator (41) and a steam compressor (42), the heating-area steam circulation outlet pipe (352) is connected with the input end of the gas-liquid separator (41), the output end of the gas-liquid separator (41) is connected with the input end of the steam compressor (42), and the output end of the steam compressor (42) is connected with the evaporation-area steam circulation inlet pipe (342).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021112924.8U CN212700588U (en) | 2020-06-16 | 2020-06-16 | Multi-effect falling film evaporation concentrator unit system |
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| CN202021112924.8U CN212700588U (en) | 2020-06-16 | 2020-06-16 | Multi-effect falling film evaporation concentrator unit system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332205A (en) * | 2023-05-29 | 2023-06-27 | 浙江百能科技有限公司 | Device and method for separating high-purity sodium carbonate and sodium bromide from PTA wastewater incineration residues |
| CN117537500A (en) * | 2024-01-10 | 2024-02-09 | 苏州合美制冷设备有限公司 | Evaporation device for screw type water chilling unit |
-
2020
- 2020-06-16 CN CN202021112924.8U patent/CN212700588U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332205A (en) * | 2023-05-29 | 2023-06-27 | 浙江百能科技有限公司 | Device and method for separating high-purity sodium carbonate and sodium bromide from PTA wastewater incineration residues |
| CN116332205B (en) * | 2023-05-29 | 2024-01-05 | 浙江百能科技有限公司 | Device and method for separating high-purity sodium carbonate and sodium bromide from PTA wastewater incineration residues |
| CN117537500A (en) * | 2024-01-10 | 2024-02-09 | 苏州合美制冷设备有限公司 | Evaporation device for screw type water chilling unit |
| CN117537500B (en) * | 2024-01-10 | 2024-04-05 | 苏州合美制冷设备有限公司 | Evaporation device for screw type water chilling unit |
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