CN211025177U - MVR evaporation equipment with built-in preheating function - Google Patents
MVR evaporation equipment with built-in preheating function Download PDFInfo
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- CN211025177U CN211025177U CN201921662908.3U CN201921662908U CN211025177U CN 211025177 U CN211025177 U CN 211025177U CN 201921662908 U CN201921662908 U CN 201921662908U CN 211025177 U CN211025177 U CN 211025177U
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Abstract
The utility model relates to the technical field of MVR evaporation equipment, in particular to a built-in preheated MVR evaporation equipment, which comprises a heat exchanger, a separator and a vapor compressor, wherein the inner part of the heat exchanger is divided into a feeding cavity, a heat exchange cavity and a discharging cavity by an upper partition plate and a lower partition plate, a plurality of heat exchange tubes are distributed in the heat exchange cavity, and a preheating rod is fixed in the middle part of the heat exchange cavity; the utility model adopts the preheating rod arranged in the heat exchange cavity to transfer the heat in the heat exchange cavity to the feeding cavity, thereby preheating the material in the feeding cavity; the preheating plate can improve the heat exchange area of preheating rod and material to improve heat transfer effect, the material that the material import flowed in can be blockked by the preheating plate simultaneously, slows down the impact force of material whereabouts, makes the gentle inflow feeding chamber of material, avoids the material directly to rush into the heat exchange tube of middle part with this, realizes in the material can be relatively even gets into all heat exchange tubes in heat exchange chamber, improves heat transfer effect.
Description
Technical Field
The utility model belongs to the technical field of MVR evaporation equipment technique and specifically relates to a built-in MVR evaporation equipment who preheats.
Background
The MVR evaporator can be suitable for low-temperature concentration in the industries of milk, glucose, starch, monosodium glutamate, xylose, pharmacy, chemical engineering, bioengineering, environmental protection engineering, waste liquid recovery, papermaking, salt making and the like, and the principle of the MVR evaporator is that secondary steam generated in the evaporator is compressed by a compressor, the pressure and the temperature are increased, the enthalpy is increased, and then the secondary steam is sent to a heat exchanger of the evaporator to be used as heating steam, so that feed liquid is kept in a boiling state, and the heating steam is condensed into water. Therefore, the original steam to be discarded is fully utilized, latent heat is recovered, the heat efficiency is improved, the economical efficiency of the raw steam is equivalent to 30 effects of multi-effect evaporation, the requirements on external heating and cooling resources are reduced, the energy consumption is reduced, and the pollution is reduced;
at present, generally all be equipped with the preheater in the MVR evaporimeter so that preheat before the material gets into the heat exchange tube, however the preheating of its material of present MVR evaporimeter adopts external configuration plate preheater to preheat usually, and its problem that exists is because the material temperature after preheating can be higher than external environment temperature by a wide margin, consequently, the material after external preheater preheats can give off a large amount of heats to the external world at the in-process that gets into the heat exchanger along with the pipeline, causes the thermal damage serious.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problem that the materials of the MVR evaporator in the prior art are usually preheated by adopting a plate preheater arranged outside, so that the preheated materials can emit a large amount of heat to the outside in the process of entering a heat exchanger along with a pipeline, and further the heat damage is serious, a built-in preheated MVR evaporation equipment is provided.
The utility model provides a technical scheme that its technical problem adopted is: a built-in preheated MVR evaporation equipment comprises a heat exchanger, a separator and a vapor compressor;
an upper partition plate and a lower partition plate are arranged in the heat exchanger, the upper partition plate and the lower partition plate divide the interior of the heat exchanger into a feeding cavity, a heat exchange cavity and a discharging cavity, the feeding cavity is positioned above the upper partition plate, the heat exchange cavity is positioned between the upper partition plate and the lower partition plate, and the discharging cavity is positioned below the lower partition plate;
the heat exchanger is characterized in that a plurality of heat exchange tubes are distributed in the heat exchange cavity, the upper ends of the heat exchange tubes are fixed on the upper partition plate, the lower ends of the heat exchange tubes are fixed on the lower partition plate, the feeding cavity is communicated with the discharging cavity through the heat exchange tubes, a preheating rod is fixed in the middle of the heat exchange cavity, the upper end of the preheating rod extends upwards into the feeding cavity, a preheating plate is fixed at the top end of the preheating rod, a material inlet is fixed at the upper end of the heat exchanger, the material inlet is located above the preheating plate and is opposite to the preheating plate, and a condensate water outlet is formed in the bottom end of the heat exchange;
the discharging cavity is communicated with the bottom end of the separator, the top end of the separator is communicated with an inlet of the steam compressor, and an outlet of the steam compressor is communicated with the heat exchange cavity.
According to the scheme, the preheating rod is arranged in the heat exchange cavity, so that the preheating rod transmits heat in the heat exchange cavity to the feeding cavity, materials in the feeding cavity are preheated, and the preheating cavity is located in the heat exchanger, so that the heat of the preheated materials is greatly prevented from being radiated to the outside, and the energy utilization rate is improved; the preheating plate can improve the heat exchange area of preheating rod and material to improve heat transfer effect, the material that the material import flowed in can be blockked by the preheating plate simultaneously, slows down the impact force of material whereabouts, makes the gentle inflow feeding chamber of material, avoids the material directly to rush into the heat exchange tube of middle part with this, realizes in the material can be relatively even gets into all heat exchange tubes in heat exchange chamber, improves heat transfer effect.
In order to improve the preheating effect, furthermore, the upper end of the preheating rod is provided with a channel, the bottom end of the channel is communicated with the heat exchange cavity, the preheating plate is internally provided with a preheating cavity, and the preheating cavity is communicated with the top end of the channel; the arrangement of the channel on the preheating rod can lead the steam in the heat exchange cavity into the preheating cavity of the preheating plate, thereby greatly improving the preheating efficiency of the material in the feeding cavity.
Furthermore, a plurality of bulges are arranged on the upper surface of the preheating plate; the protrusion on the preheating plate can form resistance to the flow of the material on the upper surface of the preheating plate, so that the material flows into the feeding cavity more slowly, the residence time of the material on the preheating plate is prolonged, the material can be sufficiently preheated, and meanwhile, the heat exchange area of the preheating plate can be increased.
The steam inlet is formed in one side of the heat exchange tube, so that the problem that the temperature of one side of the heat exchange tube, which is far away from the steam inlet, is too low can be caused; so that the temperature of the two sides of the heat exchange tube in the heat exchange cavity is relatively uniform.
The utility model has the advantages that: the built-in MVR evaporation equipment with preheating of the utility model adopts the preheating rod arranged in the heat exchange cavity, so that the preheating rod transfers the heat in the heat exchange cavity to the feeding cavity, thereby preheating the material in the feeding cavity, and the preheating cavity is arranged in the heat exchanger, thereby greatly avoiding the heat dissipation of the preheated material to the outside and improving the energy utilization rate; the preheating plate can improve the heat exchange area of preheating rod and material to improve heat transfer effect, the material that the material import flowed in can be blockked by the preheating plate simultaneously, slows down the impact force of material whereabouts, makes the gentle inflow feeding chamber of material, avoids the material directly to rush into the heat exchange tube of middle part with this, realizes in the material can be relatively even gets into all heat exchange tubes in heat exchange chamber, improves heat transfer effect.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a built-in preheated MVR evaporation apparatus of the present invention;
fig. 2 is a partially enlarged schematic view of a in fig. 1.
In the figure: 1. the device comprises a heat exchanger, 2, a separator, 3, a steam compressor, 4, an upper partition plate, 5, a lower partition plate, 6, a feeding cavity, 6-1, a material inlet, 7, a heat exchange cavity, 7-1, a steam inlet, 7-2, a condensed water outlet, 8, a discharging cavity, 9, a heat exchange pipe, 10, a preheating rod, 10-1, a channel, 11, a preheating plate, 11-1, a preheating cavity, 11-2 and a protrusion.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-2, a built-in preheated MVR evaporation device comprises a heat exchanger 1, a separator 2 and a vapor compressor 3;
an upper partition plate 4 and a lower partition plate 5 are arranged in the heat exchanger 1, the upper partition plate 4 and the lower partition plate 5 divide the interior of the heat exchanger 1 into a feeding cavity 6, a heat exchange cavity 7 and a discharging cavity 8, the feeding cavity 6 is positioned above the upper partition plate 4, the heat exchange cavity 7 is positioned between the upper partition plate 4 and the lower partition plate 5, and the discharging cavity 8 is positioned below the lower partition plate 5;
a plurality of heat exchange tubes 9 are distributed in the heat exchange cavity 7, the upper ends of the heat exchange tubes 9 are fixed on the upper partition plate 4, the lower ends of the heat exchange tubes 9 are fixed on the lower partition plate 5, the feeding cavity 6 is communicated with the discharging cavity 8 through the heat exchange tubes 9, a preheating rod 10 is fixed in the middle of the heat exchange cavity 7, the upper end of the preheating rod 10 extends upwards into the feeding cavity 6, a preheating plate 11 is fixed at the top end of the preheating rod 10, a material inlet 6-1 is fixed at the upper end of the heat exchanger 1, the material inlet 6-1 is positioned above the preheating plate 11 and is opposite to the preheating plate 11, and a condensate water outlet 7-2 is arranged at the bottom end of the heat exchange cavity 7;
the discharging cavity 8 is communicated with the bottom end of the separator 2, the top end of the separator 2 is communicated with the inlet of the steam compressor 3, and the outlet of the steam compressor 3 is communicated with the heat exchange cavity 7.
The upper end of the preheating rod 10 is provided with a channel 10-1, the bottom end of the channel 10-1 is communicated with the heat exchange cavity 7, the preheating plate 11 is internally provided with a preheating cavity 11-1, and the preheating cavity 11-1 is communicated with the top end of the channel 10-1; by means of the arrangement of the channel 10-1 on the preheating rod 10, steam in the heat exchange cavity 7 can be introduced into the preheating cavity 11-1 of the preheating plate 11, and therefore preheating efficiency of materials in the feeding cavity 6 is greatly improved.
The upper surface of the preheating plate 11 is provided with a plurality of protrusions 11-2; the protrusions 11-2 on the preheating plate 11 can form resistance to the flow of the material on the upper surface of the preheating plate 11, so that the material flows more smoothly into the bottom of the feeding cavity 6, the residence time of the material on the preheating plate 11 is prolonged, the material can be sufficiently preheated, and the heat exchange area of the preheating plate 11 can be increased.
Both sides of the heat exchanger 1 are provided with steam inlets 7-1 communicated with the heat exchange cavity 7, and the outlet of the steam compressor 3 is simultaneously communicated with the steam inlets 7-1 on both sides of the heat exchanger 1; so that the temperature of both sides of the heat exchange pipe 9 in the heat exchange cavity 7 can be relatively uniform.
The working principle of the built-in preheated MVR evaporation equipment of the embodiment is as follows:
the material and steam are in parallel flow;
steam enters the heat exchange cavity 7 from the steam inlet 7-1 so as to exchange heat with materials in the heat exchange tube 9, and condensed water generated after the steam is condensed is discharged from a condensed water outlet 7-2 at the bottom of the heat exchange cavity 7;
the material falls onto the preheating plate 11 from the material inlet 6-1 of the heat exchanger 1 and smoothly flows into the bottom of the feeding cavity 6 from the preheating plate 11, and in the process, the preheating plate 11 transfers the heat in the heat exchange cavity 7 to the feeding cavity 6 through the preheating rod 10, so that the material in the feeding cavity 6 is preheated;
the preheated material can flow into the heat exchange tube 9 from the feeding cavity 6, the material in the heat exchange tube 9 is evaporated under the heating of the steam in the heat exchange cavity 7, concentrated solution and secondary steam are generated, then the concentrated solution flows into the discharging cavity 8 from the heat exchange tube 9, the secondary steam and part of the concentrated solution in the discharging cavity 8 can enter the separator 2 for separation, the separated secondary steam is introduced into the steam compressor 3, so that after the secondary steam is compressed by the steam compressor 3, the pressure and the temperature are increased, the enthalpy is increased, and then the secondary steam is introduced into the heat exchange cavity 7 from the steam inlet 7-1 for heating.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a built-in MVR evaporation equipment that preheats which characterized in that: comprises a heat exchanger (1), a separator (2) and a vapor compressor (3);
an upper partition plate (4) and a lower partition plate (5) are arranged in the heat exchanger (1), the upper partition plate (4) and the lower partition plate (5) divide the interior of the heat exchanger (1) into a feeding cavity (6), a heat exchange cavity (7) and a discharging cavity (8), the feeding cavity (6) is positioned above the upper partition plate (4), the heat exchange cavity (7) is positioned between the upper partition plate (4) and the lower partition plate (5), and the discharging cavity (8) is positioned below the lower partition plate (5);
a plurality of heat exchange tubes (9) are distributed in the heat exchange cavity (7), the upper ends of the heat exchange tubes (9) are fixed on the upper partition plate (4), the lower ends of the heat exchange tubes (9) are fixed on the lower partition plate (5), the feeding cavity (6) is communicated with the discharging cavity (8) through the heat exchange tubes (9), a preheating rod (10) is fixed in the middle of the heat exchange cavity (7), the upper end of the preheating rod (10) extends upwards into the feeding cavity (6), a preheating plate (11) is fixed at the top end of the preheating rod (10), a material inlet (6-1) is fixed at the upper end of the heat exchanger (1), the material inlet (6-1) is located above the preheating plate (11) and is opposite to the preheating plate (11), and a condensed water outlet (7-2) is formed in the bottom end of the heat exchange cavity (7);
the discharging cavity (8) is communicated with the bottom end of the separator (2), the top end of the separator (2) is communicated with the inlet of the steam compressor (3), and the outlet of the steam compressor (3) is communicated with the heat exchange cavity (7).
2. The MVR evaporation apparatus with built-in preheating according to claim 1, wherein: the preheating device is characterized in that a channel (10-1) is formed in the upper end of the preheating rod (10), the bottom end of the channel (10-1) is communicated with the heat exchange cavity (7), a preheating cavity (11-1) is formed in the preheating plate (11), and the preheating cavity (11-1) is communicated with the top end of the channel (10-1).
3. The MVR evaporation apparatus with built-in preheating according to claim 1, wherein: the upper surface of the preheating plate (11) is provided with a plurality of bulges (11-2).
4. The MVR evaporation apparatus with built-in preheating according to claim 1, wherein: and steam inlets (7-1) communicated with the heat exchange cavity (7) are formed in the two sides of the heat exchanger (1), and an outlet of the steam compressor (3) is communicated with the steam inlets (7-1) in the two sides of the heat exchanger (1) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921662908.3U CN211025177U (en) | 2019-09-30 | 2019-09-30 | MVR evaporation equipment with built-in preheating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921662908.3U CN211025177U (en) | 2019-09-30 | 2019-09-30 | MVR evaporation equipment with built-in preheating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211025177U true CN211025177U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921662908.3U Active CN211025177U (en) | 2019-09-30 | 2019-09-30 | MVR evaporation equipment with built-in preheating function |
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| Country | Link |
|---|---|
| CN (1) | CN211025177U (en) |
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2019
- 2019-09-30 CN CN201921662908.3U patent/CN211025177U/en active Active
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