CN212308891U - Energy-saving five-effect evaporator - Google Patents
Energy-saving five-effect evaporator Download PDFInfo
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- CN212308891U CN212308891U CN202020642962.8U CN202020642962U CN212308891U CN 212308891 U CN212308891 U CN 212308891U CN 202020642962 U CN202020642962 U CN 202020642962U CN 212308891 U CN212308891 U CN 212308891U
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Abstract
The utility model provides an energy-saving five-effect evaporator, relating to the technical field of evaporation concentration equipment; the evaporator comprises a five-effect evaporator body, a first heat exchanger and a second heat exchanger; a low-temperature medium inlet of the first heat exchanger is connected with a feed pipe, and a low-temperature medium outlet is communicated with a raw material liquid inlet of the five-effect tank body; a concentrated solution outlet of the five-effect tank body is communicated with a low-temperature medium inlet of the second heat exchanger; a low-temperature medium outlet of the second heat exchanger is communicated with a raw material liquid inlet of the four-effect tank body; the four-effect tank body, the three-effect tank body, the two-effect tank body and the one-effect tank body are sequentially connected; a concentrated solution outlet of the first-effect tank body is communicated with a high-temperature medium inlet of the second heat exchanger; the high-temperature medium outlet of the second heat exchanger is communicated with the high-temperature medium inlet of the first heat exchanger; and a high-temperature medium outlet of the first heat exchanger is connected with a finished material pipe. The utility model discloses a high temperature concentrate after the concentrated processing preheats the lower raw materials liquid of temperature, improves the temperature of raw materials liquid, and further the energy saving improves evaporation efficiency.
Description
Technical Field
The utility model relates to an evaporation concentration equipment technical field specifically is an energy-conserving five effect evaporimeters.
Background
Evaporation refers to a process in which a part of the solvent is vaporized and removed after the solution is heated, thereby increasing the concentration of the solution, i.e., the concentration of the solution is concentrated. The evaporation mode includes natural evaporation and boiling evaporation. Natural evaporation is the vaporization of the solvent in the solution below its boiling point, and this evaporation is only performed on the surface of the solution, so the rate is slow and the efficiency is low. Boiling evaporation is evaporation at boiling point, any part of solution is vaporized, and the efficiency is high.
The equipment that performs the evaporation operation is called an evaporator. Since the evaporated solution is mostly an aqueous solution, the evaporation process is completed by using water vapor as a heating agent to generate water vapor. For the sake of convenience of distinction, water vapor as a heat source is referred to as heating steam or primary steam, and steam vaporized from the solution is referred to as secondary steam. The evaporator is essentially a heat exchanger, in the evaporator, materials and a heat source carry out heat exchange, partial solvent in the materials is changed into gaseous state and separated out, the concentration of the materials is improved, and the purpose of evaporation concentration is achieved. The evaporator is divided into a single effect type, a double effect type, a triple effect type, a quadruple effect type, a quintuple effect type and the like according to the effect bodies, and the more the effect number is, the better the energy-saving effect is. However, for the five-effect evaporator, the space for further saving energy is still provided, the using amount of steam can be further reduced, and the evaporation efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-conserving five effect evaporation wares has solved the evaporimeter among the prior art and still has the great problem of energy resource consumption.
The technical scheme of the utility model is realized like this:
an energy-saving five-effect evaporator comprises a five-effect evaporator body, a first heat exchanger and a second heat exchanger;
the five-effect evaporator body comprises a first-effect tank body, a second-effect tank body, a third-effect tank body, a fourth-effect tank body and a five-effect tank body, wherein each tank body is provided with a heating steam inlet, a secondary steam outlet, a raw material liquid inlet and a concentrated liquid outlet;
a secondary steam outlet of the first-effect tank body is connected with a heating steam inlet of the second-effect tank body, a secondary steam outlet of the second-effect tank body is connected with a heating steam inlet of the third-effect tank body, a secondary steam outlet of the third-effect tank body is connected with a heating steam inlet of the fourth-effect tank body, and a secondary steam outlet of the fourth-effect tank body is connected with a heating steam inlet of the fifth-effect tank body;
the first heat exchanger and the second heat exchanger are respectively provided with a low-temperature medium inlet, a low-temperature medium outlet, a high-temperature medium inlet and a high-temperature medium outlet;
a low-temperature medium inlet of the first heat exchanger is connected with a feeding pipe, and a low-temperature medium outlet of the first heat exchanger is communicated with a raw material liquid inlet of the five-effect tank body through a fifth feeding pipe;
a concentrated solution outlet of the five-effect tank body is communicated with a low-temperature medium inlet of the second heat exchanger through a fifth discharge pipe; a low-temperature medium outlet of the second heat exchanger is communicated with a raw material liquid inlet of the four-effect tank body through a fourth feeding pipe;
a concentrated solution outlet of the four-effect tank body is communicated with a raw material solution inlet of the three-effect tank body through a fourth discharge pipe;
a concentrated solution outlet of the three-effect tank body is communicated with a raw material solution inlet of the two-effect tank body through a third discharge pipe;
a concentrated solution outlet of the second-effect tank body is communicated with a raw material solution inlet of the first-effect tank body through a second discharge pipe;
a concentrated solution outlet of the first-effect tank body is communicated with a high-temperature medium inlet of the second heat exchanger through a first discharge pipe;
the high-temperature medium outlet of the second heat exchanger is communicated with the high-temperature medium inlet of the first heat exchanger through a heat exchanger pipe; and a high-temperature medium outlet of the first heat exchanger is connected with a finished product material pipe.
Furthermore, a fifth feeding pump is arranged on the fifth feeding pipe; a fifth discharging pump is arranged on the fifth discharging pipe; a fourth feeding pump is arranged on the fourth feeding pipe; a third feeding pump is arranged on the fourth discharging pipe; a second feeding pump is arranged on the third discharging pipe; a first feeding pump is arranged on the second discharging pipe; a first discharging pump is arranged on the first discharging pipe; a heat exchanger material pump is arranged on the heat exchanger tube; and a finished product pump is arranged on the finished product pipe.
Further, a secondary steam outlet of the five-effect tank body is connected with a condenser.
Further, the first heat exchanger and the second heat exchanger are both plate heat exchangers.
Further, the plate heat exchanger comprises a heat insulation shell, and a heat exchange cavity is arranged in the heat insulation shell;
a plurality of baffle plates are sequentially arranged in the heat exchange cavity from top to bottom, and the heat exchange cavity is divided into a plurality of single cavities by the baffle plates; a flow channel is formed between one end of the baffle plate and the heat-insulating shell and is used for communicating the single cavities on the upper side and the lower side of the baffle plate; the flow passages are alternately distributed at the left end and the right end of the heat exchange cavity from top to bottom in sequence; the top end of the heat exchange cavity is communicated with the high-temperature medium inlet, and the high-temperature medium inlet is far away from the uppermost runner; the bottom end of the heat exchange cavity is communicated with the high-temperature medium outlet, and the high-temperature medium outlet is far away from the lowest flow channel;
a plurality of heat exchange tubes are arranged in the single cavities, the heat exchange tubes in two adjacent single cavities are opposite one by one and are communicated through vertical tubes, the vertical tubes are positioned close to the heat insulation shell, and the vertical tubes penetrate through the baffle plate; each layer of vertical pipes from top to bottom are sequentially and alternately distributed at the front end and the rear end of the heat exchange cavity;
the heat exchange tube at the bottommost layer is communicated with the low-temperature medium inlet, and the low-temperature medium inlet is far away from the vertical tube at the bottommost layer; the heat exchange tube on the uppermost layer is communicated with the low-temperature medium outlet, and the low-temperature medium outlet is far away from the vertical tube on the uppermost layer.
Further, the heat preservation shell comprises a hollow vacuum cavity layer, and a heat preservation material layer is arranged on the outer side of the vacuum cavity layer.
The utility model has the advantages that:
the utility model has simple structure and convenient use; preheating the raw material liquid entering the five-effect tank body by a first heat exchanger, and then preheating the raw material liquid discharged from the five-effect tank body and about to enter the four-effect tank body again by second heat exchange; the heat source of the first heat exchanger and the second heat exchanger is high-temperature concentrated solution discharged from the first-effect heat exchanger; the high-temperature concentrated solution after the concentration treatment can preheat the raw material solution with lower temperature, so that the temperature of the raw material solution is increased, the use amount of steam is saved, the energy is further saved, and the evaporation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural view of an embodiment of a plate heat exchanger;
fig. 3 is a side view of the structure of fig. 2.
Wherein:
1. a feed pipe; 2. a fifth feeding pipe; 3. a fifth discharge pipe; 4. a fourth feeding pipe; 5. a fourth discharge pipe; 6. a third discharge pipe; 7. a second discharge pipe; 8. a first discharge pipe; 9. a heat exchanger tube; 10. a finished material pipe; 11. a fifth feed pump; 12. a fifth discharge pump; 13. a fourth feed pump; 14. a third feed pump; 15. a second feed pump; 16. a first feed pump; 17. a first discharge pump; 18. a heat exchanger material pump; 19. a finished product pump; 20. a vacuum cavity layer; 21. a thermal insulation material layer; 22. a baffle plate; 23. a single chamber; 24. a flow channel; 25. a high temperature medium inlet; 26. a high temperature medium outlet; 27. a heat exchange pipe; 28. a vertical tube; 29. a low temperature medium inlet; 30. and a low-temperature medium outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the energy-saving five-effect evaporator in the embodiment includes a five-effect evaporator body, a first heat exchanger and a second heat exchanger.
Referring to fig. 1, the five-effect evaporator body comprises a first-effect tank, a second-effect tank, a third-effect tank, a fourth-effect tank and a fifth-effect tank, wherein the tanks have the same structure and are used for evaporation. Each tank body is provided with a heating steam inlet, a secondary steam outlet, a raw material liquid inlet and a concentrated liquid outlet. The heating steam inlet is used for inputting steam serving as a heat source into the tank body; the secondary steam outlet is used for discharging secondary steam generated in the evaporation and concentration process; the raw material liquid inlet is used for inputting raw materials to be evaporated and concentrated into the tank body; and the concentrated solution outlet is used for discharging concentrated solution after evaporation and concentration.
The secondary steam outlet of the first-effect tank body is connected with the heating steam inlet of the second-effect tank body, the secondary steam outlet of the second-effect tank body is connected with the heating steam inlet of the third-effect tank body, the secondary steam outlet of the third-effect tank body is connected with the heating steam inlet of the fourth-effect tank body, and the secondary steam outlet of the fourth-effect tank body is connected with the heating steam inlet of the fifth-effect tank body. Namely, the secondary steam generated by the previous tank body is sent to the next tank body as a heat source, thereby greatly saving energy.
The first heat exchanger and the second heat exchanger each have a low temperature medium inlet 29, a low temperature medium outlet 30, a high temperature medium inlet 25 and a high temperature medium outlet 26. In this embodiment, the first heat exchanger and the second heat exchanger are both plate heat exchangers.
The low-temperature medium inlet 29 of the first heat exchanger is connected with the feeding pipe 1, and the low-temperature medium outlet 30 of the first heat exchanger is communicated with the raw material liquid inlet of the five-effect tank body through the fifth feeding pipe 2. A concentrated solution outlet of the five-effect tank body is communicated with a low-temperature medium inlet 29 of the second heat exchanger through a fifth discharge pipe 3; and a low-temperature medium outlet 30 of the second heat exchanger is communicated with a raw material liquid inlet of the four-effect tank body through a fourth feeding pipe 4.
And a concentrated solution outlet of the four-effect tank body is communicated with a raw material solution inlet of the three-effect tank body through a fourth discharge pipe 5. And a concentrated solution outlet of the three-effect tank body is communicated with a raw material solution inlet of the two-effect tank body through a third discharge pipe 6. And a concentrated solution outlet of the two-effect tank body is communicated with a raw material solution inlet of the one-effect tank body through a second discharge pipe 7.
And a concentrated solution outlet of the first-effect tank body is communicated with a high-temperature medium inlet 25 of the second heat exchanger through a first discharge pipe 8. The high-temperature medium outlet 26 of the second heat exchanger is communicated with the high-temperature medium inlet 25 of the first heat exchanger through the heat exchanger tube 9; the high-temperature medium outlet 26 of the first heat exchanger is connected with the finished material pipe 10.
In this embodiment, a fifth feeding pump 11 is arranged on the fifth feeding pipe 2; a fifth discharging pump 12 is arranged on the fifth discharging pipe 3; a fourth feeding pump 13 is arranged on the fourth feeding pipe 4; a third feeding pump 14 is arranged on the fourth discharging pipe 5; a second feeding pump 15 is arranged on the third discharging pipe 6; a first feeding pump 16 is arranged on the second discharging pipe 7; a first discharging pump 17 is arranged on the first discharging pipe 8; a heat exchanger material pump 18 is arranged on the heat exchanger tube 9; a finished product pump 19 is arranged on the finished product pipe 10. Each pump body is used for conveying materials, and the materials are transmitted among the tank bodies, the first heat exchanger and the second heat exchanger.
In this embodiment, the secondary steam outlet of the five-effect tank body is connected with the condenser so as to cool the secondary steam discharged from the five-effect tank body and discharge the cooled secondary steam.
Referring to fig. 2-3, in the present embodiment, the plate heat exchanger includes a thermal insulation casing, where the thermal insulation casing includes a hollow vacuum cavity layer 20, and a thermal insulation material layer 21 is disposed outside the vacuum cavity, so that a very good thermal insulation effect is achieved, heat dissipation is avoided, and energy utilization rate is improved.
The heat-insulating shell is internally provided with a heat exchange cavity, a plurality of baffle plates 22 are sequentially arranged in the heat exchange cavity from top to bottom, and the heat exchange cavity is divided into a plurality of single cavities 23 by the baffle plates 22. A flow passage 24 is formed between one end of the baffle plate 22 and the heat preservation shell, and the flow passage 24 is communicated with the single cavities 23 at the upper side and the lower side of the baffle plate 22. The flow passages 24 are alternately distributed at the left end and the right end of the heat exchange cavity from top to bottom. The top end of the heat exchange cavity is communicated with the high-temperature medium inlet 25, and the high-temperature medium inlet 25 is far away from the uppermost runner 24. The bottom end of the heat exchange cavity is communicated with the high-temperature medium outlet 26, and the high-temperature medium outlet 26 is far away from the lowest flow channel 24. Thus, after entering from the high-temperature medium inlet 25, the high-temperature medium needs to be repeatedly deflected to be discharged from the high-temperature medium outlet 26, so that heat exchange is facilitated.
A plurality of heat exchange tubes 27 are arranged in the single cavities 23, the heat exchange tubes 27 in two adjacent single cavities 23 are opposite one to one and communicated through vertical tubes 28, the vertical tubes 28 are positioned close to the heat preservation shell, and the vertical tubes 28 penetrate through the baffle plate 22. Each layer of vertical tubes 28 from top to bottom is alternately distributed at the front end and the rear end of the heat exchange cavity. The lowermost heat exchange tubes 27 communicate with the cryogenic medium inlet 29, the cryogenic medium inlet 29 being located remote from the lowermost riser tubes 28. The heat exchange tube 27 at the uppermost layer is communicated with the low-temperature medium outlet 30, and the low-temperature medium outlet 30 is far away from the standpipe 28 at the uppermost layer. Thus, after entering from the low-temperature medium inlet 29, the low-temperature medium needs to be repeatedly deflected to be discharged from the low-temperature medium outlet 30, so that heat exchange is facilitated. And the inlet end of the low-temperature medium is the outlet end of the high-temperature medium, so that the low-temperature medium exchanges heat with the high-temperature medium with lower temperature, and then meets the high-temperature medium which just enters after the temperature of the low-temperature medium is gradually raised to exchange heat, and the heat exchange efficiency can be greatly improved.
When this embodiment uses, the raw materials of treating the concentration are injected into by inlet pipe 1 with the low temperature medium entry 29 of first heat exchanger is connected, preheats for the first time through first heat exchanger earlier, and then the raw materials is sent into the five-effect tank body again and is carried out evaporative concentration. The material concentrated by the five-effect tank body is sent to a second heat exchanger for secondary preheating, then is sent to a four-effect tank body, a three-effect tank body, a two-effect tank body and a one-effect tank body in sequence for evaporation and concentration, the temperature of the material is continuously increased in the process, and finally high-temperature concentrated solution is discharged from a concentrated solution outlet of the one-effect tank body. The high-temperature concentrated solution is firstly sent into the second heat exchanger through the high-temperature medium inlet 25 of the second heat exchanger, then is discharged from the high-temperature medium outlet 26 of the second heat exchanger, then is sent into the first heat exchanger through the high-temperature medium inlet 25 of the first heat exchanger, and then is discharged from the high-temperature medium outlet 26 of the first heat exchanger, and is sent to the next processing step through the finished product pipe 10. In the process, the high-temperature concentrated solution provides heat for the second heat exchanger and the first heat exchanger so as to preheat the raw material to be concentrated. The lower feed liquor of temperature is preheated through the high temperature concentrate behind the concentrated processing to the this embodiment, improves the temperature of feed liquor to save the use amount of steam, further energy saving improves evaporation efficiency.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An energy-saving five-effect evaporator is characterized by comprising a five-effect evaporator body, a first heat exchanger and a second heat exchanger;
the five-effect evaporator body comprises a first-effect tank body, a second-effect tank body, a third-effect tank body, a fourth-effect tank body and a five-effect tank body, wherein each tank body is provided with a heating steam inlet, a secondary steam outlet, a raw material liquid inlet and a concentrated liquid outlet;
a secondary steam outlet of the first-effect tank body is connected with a heating steam inlet of the second-effect tank body, a secondary steam outlet of the second-effect tank body is connected with a heating steam inlet of the third-effect tank body, a secondary steam outlet of the third-effect tank body is connected with a heating steam inlet of the fourth-effect tank body, and a secondary steam outlet of the fourth-effect tank body is connected with a heating steam inlet of the fifth-effect tank body;
the first heat exchanger and the second heat exchanger are respectively provided with a low-temperature medium inlet, a low-temperature medium outlet, a high-temperature medium inlet and a high-temperature medium outlet;
a low-temperature medium inlet of the first heat exchanger is connected with a feeding pipe, and a low-temperature medium outlet of the first heat exchanger is communicated with a raw material liquid inlet of the five-effect tank body through a fifth feeding pipe;
a concentrated solution outlet of the five-effect tank body is communicated with a low-temperature medium inlet of the second heat exchanger through a fifth discharge pipe; a low-temperature medium outlet of the second heat exchanger is communicated with a raw material liquid inlet of the four-effect tank body through a fourth feeding pipe;
a concentrated solution outlet of the four-effect tank body is communicated with a raw material solution inlet of the three-effect tank body through a fourth discharge pipe;
a concentrated solution outlet of the three-effect tank body is communicated with a raw material solution inlet of the two-effect tank body through a third discharge pipe;
a concentrated solution outlet of the second-effect tank body is communicated with a raw material solution inlet of the first-effect tank body through a second discharge pipe;
a concentrated solution outlet of the first-effect tank body is communicated with a high-temperature medium inlet of the second heat exchanger through a first discharge pipe;
the high-temperature medium outlet of the second heat exchanger is communicated with the high-temperature medium inlet of the first heat exchanger through a heat exchanger pipe; and a high-temperature medium outlet of the first heat exchanger is connected with a finished product material pipe.
2. The energy-saving five-effect evaporator as claimed in claim 1, wherein a fifth feeding pump is arranged on the fifth feeding pipe; a fifth discharging pump is arranged on the fifth discharging pipe; a fourth feeding pump is arranged on the fourth feeding pipe; a third feeding pump is arranged on the fourth discharging pipe; a second feeding pump is arranged on the third discharging pipe; a first feeding pump is arranged on the second discharging pipe; a first discharging pump is arranged on the first discharging pipe; a heat exchanger material pump is arranged on the heat exchanger tube; and a finished product pump is arranged on the finished product pipe.
3. The energy saving five effect evaporator of claim 2 wherein the secondary steam outlet of the five effect tank is connected to a condenser.
4. The energy saving five effect evaporator according to any one of claims 1-3, wherein the first heat exchanger and the second heat exchanger are both plate heat exchangers.
5. The energy saving five effect evaporator of claim 4, wherein the plate heat exchanger comprises a heat insulating shell, and a heat exchanging cavity is arranged inside the heat insulating shell;
a plurality of baffle plates are sequentially arranged in the heat exchange cavity from top to bottom, and the heat exchange cavity is divided into a plurality of single cavities by the baffle plates; a flow channel is formed between one end of the baffle plate and the heat-insulating shell and is used for communicating the single cavities on the upper side and the lower side of the baffle plate; the flow passages are alternately distributed at the left end and the right end of the heat exchange cavity from top to bottom in sequence; the top end of the heat exchange cavity is communicated with the high-temperature medium inlet, and the high-temperature medium inlet is far away from the uppermost runner; the bottom end of the heat exchange cavity is communicated with the high-temperature medium outlet, and the high-temperature medium outlet is far away from the lowest flow channel;
a plurality of heat exchange tubes are arranged in the single cavities, the heat exchange tubes in two adjacent single cavities are opposite one by one and are communicated through vertical tubes, the vertical tubes are positioned close to the heat insulation shell, and the vertical tubes penetrate through the baffle plate; each layer of vertical pipes from top to bottom are sequentially and alternately distributed at the front end and the rear end of the heat exchange cavity;
the heat exchange tube at the bottommost layer is communicated with the low-temperature medium inlet, and the low-temperature medium inlet is far away from the vertical tube at the bottommost layer; the heat exchange tube on the uppermost layer is communicated with the low-temperature medium outlet, and the low-temperature medium outlet is far away from the vertical tube on the uppermost layer.
6. The energy saving five effect evaporator of claim 5, wherein the thermal insulation housing comprises a hollow vacuum cavity layer, and a thermal insulation material layer is arranged outside the vacuum cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020642962.8U CN212308891U (en) | 2020-04-24 | 2020-04-24 | Energy-saving five-effect evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020642962.8U CN212308891U (en) | 2020-04-24 | 2020-04-24 | Energy-saving five-effect evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN212308891U true CN212308891U (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020642962.8U Active CN212308891U (en) | 2020-04-24 | 2020-04-24 | Energy-saving five-effect evaporator |
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| CN (1) | CN212308891U (en) |
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2020
- 2020-04-24 CN CN202020642962.8U patent/CN212308891U/en active Active
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