CN219567625U - Waste water low temperature evaporator with heat recovery - Google Patents
Waste water low temperature evaporator with heat recovery Download PDFInfo
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- CN219567625U CN219567625U CN202320224820.3U CN202320224820U CN219567625U CN 219567625 U CN219567625 U CN 219567625U CN 202320224820 U CN202320224820 U CN 202320224820U CN 219567625 U CN219567625 U CN 219567625U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The low-temperature wastewater evaporator with the heat energy recovery function comprises a feed liquid circulation evaporation system, an air circulation system and a condensation recovery system; the feed liquid circulation evaporation system comprises a raw concentrate material box, an evaporation sloping plate group and a circulation water tank; the air circulation system comprises a main fan, a heater and an energy recovery fan, wherein the main fan is communicated with an air inlet of an evaporation inclined plate group, an air outlet of the evaporation inclined plate group is connected with a condensation recovery system through a pipeline, an air outlet of the condensation recovery system is communicated with the energy recovery fan, and an air outlet of the energy recovery fan is communicated with an air outlet of the main fan to form circulation connection.
Description
Technical Field
The utility model relates to the technical field of environmental engineering wastewater treatment, in particular to a wastewater low-temperature evaporator with heat energy recovery.
Background
Along with the rapid development of Chinese economy, the wastewater generated in the production and living processes is increased, the wastewater treatment has become one of the key problems of the environmental development of China, and the wastewater in China is mainly divided into: physical treatment, chemical treatment and biological treatment, however, a batch of concentrate is inevitably produced while the supernatant is discharged up to the standard. The treatment method of the concentrated solution adopts a wider method mainly comprising a concentrated solution recharging method, an incineration method and a coagulation method, but the methods have the defects that the concentrated solution recharging method has pollution risk to underground water and increases the water content of the landfill layer; the incineration method has high cost, the tail gas of the boiler needs to be purified, and the treatment process is complex; the coagulation method is effective in treating the concentrated solution, but the coagulation method has requirements on the components of the concentrated solution, has larger limitation, and the addition of a large amount of coagulant increases the treatment cost of the concentrated solution; the evaporation concentration method is the most thorough treatment method, but the traditional evaporation concentration method has the defects of high energy consumption, serious equipment scaling and low operation efficiency.
Disclosure of Invention
Aiming at the defects, the utility model improves the prior art, provides an evaporator device which evaporates water in high-concentration organic wastewater and heavy metal wastewater through a certain wind speed and temperature, and finally leaves a small amount of solid matters, particularly when a wastewater concentrate or high-concentration liquid is difficult to treat or cannot be further treated, the device can completely evaporate the water in the concentrate basically, the concentration rate reaches more than 95%, and the zero emission of waste liquid is basically realized, and the technical scheme is as follows:
the low-temperature wastewater evaporator with the heat energy recovery function comprises a feed liquid circulation evaporation system, an air circulation system and a condensation recovery system;
the feed liquid circulation evaporation system comprises a raw concentrate material box, an evaporation inclined plate group and a circulating water tank, wherein the water outlet end of the raw concentrate material box is connected with a feed pump, the feed pump is connected with one end of the evaporation inclined plate group through a feed liquid dispersing pipe, the other end of the evaporation inclined plate group is communicated with the circulating water tank through a liquid outlet tank collecting pipe, a filter screen is arranged in the circulating water tank, a centrifugal machine is communicated with the unfiltered end of the filter screen through a diaphragm pump, the filtered end of the filter screen is connected with the feed liquid dispersing pipe through a circulating water pump, the discharge end of the centrifugal machine is communicated with a solid material box through a discharge valve, and the liquid outlet end is communicated with the raw concentrate material box;
the air circulation system comprises a main fan, a heater and an energy recovery fan, wherein the main fan is communicated with an air inlet of an evaporation inclined plate group, the heater is arranged at the air inlet of the evaporation inclined plate group, a wind dispersing piece device is arranged on one side of an air outlet of the main fan, the air inlet of the main fan is connected with a first dehumidifier, an air outlet of the evaporation inclined plate group is connected with a condensation recovery system through a pipeline, the air outlet of the condensation recovery system is communicated with the energy recovery fan, the air outlet of the energy recovery fan is communicated with the air outlet of the main fan to form circulation connection, so that air output by the main fan flows into the condensation recovery system after being evaporated by the heater, and condensed water is formed by heat exchange in the condensation recovery system.
The condensing recovery system comprises a condenser and a heat exchanger which are communicated with a pipeline, wherein an external air inlet of the condenser is respectively connected with an air supplementing fan and a refrigerating device through an air inlet pipe, a water outlet is communicated with a condensing water tank, an external air inlet of the heat exchanger is communicated with a second dehumidifier, and the water outlet is communicated with the condensing water tank.
Further, a cold air supplementing quantity adjusting valve is connected between the cold air supplementing fan and the condenser, and a refrigerating air quantity adjusting valve is connected between the refrigerating device and the condenser.
The water inlet end of the liquid inlet dispersion pipe is connected with a regulating valve.
The air inlet of the evaporation inclined plate group is positioned at the water outlet end of the evaporation inclined plate group.
An air inlet of the energy recovery fan is connected with an energy recovery air quantity regulating valve, and an air outlet of the energy recovery fan is connected with a one-way valve.
And both the condenser and the heat exchanger are provided with cold air heat exchange air outlets.
The evaporation inclined plate group is obliquely arranged relative to the horizontal plane.
Compared with the prior art, the utility model has the beneficial effects that: compared with the existing MVR evaporator or multi-effect evaporator in the current market, the utility model adopts low-temperature operation, has the characteristics of low energy consumption, simple structure, low cost and the like, has the advantages of difficult scaling, good evaporation concentration effect, good steam fluidity and high wastewater evaporation speed, and is beneficial to improving the wastewater treatment speed.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the following description of the embodiments will briefly describe the drawings that are required to be used in the description:
FIG. 1 is a schematic diagram of a pipeline according to the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
comprising the following steps: 1. a feed liquid circulation evaporation system; 2. an air circulation system; 3. and a condensation recovery system; 4. a raw concentrate feed tank; 5. an evaporation sloping plate group; 7. a feed pump; 8. a liquid inlet dispersion pipe; 9. a liquid outlet groove collecting pipe; 10. a circulation water tank; 11. a filter screen; 12. a diaphragm pump; 13. a centrifuge; 14. a circulating water pump; 16. a regulating valve; 17. a material leakage valve; 18. a solids bin; 19. a main fan; 21. an energy recovery fan; 22. a heater; 23. a wind dispersing sheet device; 24. a first dehumidifier; 25. a pipe; 26. an energy recovery air quantity regulating valve; 27. a one-way valve; 28. a condenser; 29. a heat exchanger; 30. an air inlet pipe; 31. an air supplementing fan; 32. a refrigerating device; 34. a second dehumidifier; 35. a condensate tank; 36. an air outlet for cold air heat exchange; 37. a cold air supplementing quantity regulating valve; 38. and a refrigerating air quantity regulating valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Embodiments of the present utility model will be described in further detail below with reference to the attached drawings, as follows:
the utility model provides a waste water low temperature evaporator with heat recovery, includes feed liquid circulation vaporization system 1, air circulation system 2 and condensation recovery system 3:
the feed liquid circulation evaporation system 1 comprises a raw concentrate material box 4, an evaporation inclined plate group 5 and a circulation water tank 10, wherein the water outlet end of the raw concentrate material box 4 is connected with a feed pump 7, the feed pump 7 is connected with one end of the evaporation inclined plate group 5 through a feed liquid dispersing pipe 8, the evaporation inclined plate group 5 is obliquely arranged relative to the horizontal plane, the other end of the evaporation inclined plate group 5 is communicated with the circulation water tank 10 through a liquid outlet collecting pipe 9, a filter screen 11 is arranged in the circulation water tank 10, one unfiltered end of the filter screen 11 is communicated with a centrifugal machine 13 through a diaphragm pump 12, one filtered end of the filter screen 11 is connected with the feed liquid dispersing pipe 8 through a circulating water pump 14, the water inlet end of the feed liquid dispersing pipe 8 is connected with a regulating valve 16, the discharge end of the centrifugal machine 13 is communicated with a solid material box 18 through a leakage valve 17, the liquid outlet end is communicated with the raw concentrate material box 4, and the air inlet of the evaporation inclined plate group 5 is positioned at the water outlet end of the evaporation inclined plate group 5;
the air circulation system 2 comprises a main fan 19, a heater 22 and an energy recovery fan 21, wherein the main fan 19 is communicated with an air inlet of the evaporation inclined plate group 5, the heater 22 is arranged at the air inlet of the evaporation inclined plate group 5, the heater 22 is arranged at one side of an air outlet of the main fan 19, a wind dispersing sheet device 23 is arranged at one side of the air inlet of the main fan 19, the air inlet of the main fan 19 is connected with a first dehumidifier 24, the air outlet of the evaporation inclined plate group 5 is connected with a condensation recovery system 3 through a pipeline 25, the air outlet of the condensation recovery system 3 is communicated with the energy recovery fan 21, the air outlet of the energy recovery fan 21 is communicated with the air outlet of the main fan 19 to form circulation connection, so that air output by the main fan 19 flows into the condensation recovery system 3 after evaporating the evaporation inclined plate group 5 through the heater 22, and heat exchange is performed in the condensation recovery system 3 to form condensed water, the air inlet of the energy recovery fan 21 is connected with an energy recovery air quantity adjusting valve 26, and the air outlet is connected with a one-way valve 27.
The condensation recovery system 3 comprises a condenser 28 and a heat exchanger 29 which are communicated with a pipeline 25, wherein an external air inlet of the condenser 28 is respectively connected with a cold air supplementing machine 31 and a refrigerating device 32 through an air inlet pipe 30, a water outlet is communicated with a condensation water tank 35, an external air inlet of the heat exchanger 29 is communicated with a second dehumidifier 34, the water outlet is communicated with the condensation water tank 35, both the condenser 28 and the heat exchanger 29 are provided with a cold air heat exchange air outlet 36, a cold air supplementing quantity regulating valve 37 is connected between the cold air supplementing machine 31 and the condenser 28, and a refrigerating air quantity regulating valve 38 is connected between the refrigerating device 32 and the condenser 28.
The waste liquid (high concentration organic heavy metal waste water or reverse osmosis concentrated solution) is sent into a circulating water tank 10 in a raw concentrated solution material tank 4 through a feed pump 7, then proper water quantity is regulated to a liquid inlet dispersion pipe 8 through a valve, so that concentrated solution is uniformly distributed on an evaporation inclined plate group 5, and because the evaporation inclined plate group 5 has a certain gradient, concentrated solution uniformly flows downwards, hot air passes through the evaporation inclined plate group 5 at the moment, and the water evaporation speed depends on three factors, namely, 1, the water content in the air is reduced, as the hot air passes through the evaporation inclined plate group 5, and is known from physical properties; 2. the relative velocity of the wind flowing over the surface of the evaporation swash plate group 5; 3. the temperature of the wind on the evaporation swash plate group 5; when the evaporated concentrated solution flows into the inclined plate liquid outlet groove through the evaporation inclined plate group 5 and finally enters the liquid outlet groove collecting pipe 9 to enter the circulating water tank 10, a filter screen 11 is arranged in the circulating water tank 10 at the moment, the aim of filtering large-particle substances in the concentrated solution is achieved, and the filtered water enters the circulating water pump 14 again to repeat the actions above; the particles intercepted by the filter screen 11 are pumped into the centrifuge 13 by the diaphragm pump 12, under the high-speed rotation of the centrifuge 13, the filtered water is connected into the raw concentrate material box 4 by the pipeline 25, the solids are at the bottom of the centrifuge 13, and the solids enter the solid material box 18 by opening the material valve.
When a large amount of hot air is evaporated through the evaporation inclined plate group 5 to generate a large amount of steam, the steam enters the condenser 28, the equipment is subjected to heat exchange by cold air provided by the external refrigeration device 32, when a large amount of water steam is contained on the surface of the plate-type condenser 28, the moisture in the exchanged steam can be quickly condensed into water on the surface of the condenser 28, and then the condensed water flows into the bottom of the equipment to be discharged, wherein if the temperature in the air is too high, the refrigeration device 32 is started, the refrigeration air quantity regulating valve 38 is started, and if the temperature in the air is too low, the air make-up fan 31 and the cold air make-up quantity regulating valve 37 can be directly started.
After the water vapor is condensed into water through the condenser 28, the residual heat in the vapor is recovered again, so that the energy consumption is reduced, the condensed vapor enters the heat exchanger 29, the residual heat in the heat exchanger 29 exchanges heat with the cold air coming from the equipment of the second dehumidifier 34 (for supplementary circulation), the temperature of the air outlet is very low, the hot air after heat exchange enters the outlet of the main fan 19 again by a certain wind pressure through the energy recovery fan 21, and the residual heat is reused, so that the energy consumption is reduced. There is a small amount of condensate in the apparatus which is connected to the condensate tank 35 via the pipe 25.
Compared with the existing MVR evaporator or multi-effect evaporator in the current market, the utility model adopts low-temperature operation, has the characteristics of low energy consumption, simple structure, low cost and the like, has the advantages of difficult scaling, good evaporation concentration effect, good steam fluidity and high wastewater evaporation speed, and is beneficial to improving the wastewater treatment speed.
The utility model can reduce the water content in the air: the air first enters the first dehumidifier 24 through the main fan 19, so that most moisture and dust in the air can be removed, the water content and dust in the air are reduced, the subsequent evaporation is more beneficial, and the principle of the second dehumidifier 34 for the supplementary circulation is also the same.
Wind speed is increased by a fan: the wind speed is an important factor influencing the water evaporation of the device, and the higher the relative speed of air on the evaporation inclined plate group 5 is, the higher the evaporation efficiency is. But the wind speed and the relative speed of the water cannot exceed 15m/s, otherwise the wind blows the concentrated solution.
The air temperature is heated by the heater 22: the temperature is a very important factor affecting the evaporation efficiency, and the heater 22 is used to make the temperature in the air be about 75 ℃, so that the hot air is evaporated through the surface of the evaporation sloping plate.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a waste water low temperature evaporator with heat recovery, includes feed liquid circulation vaporization system (1), air circulation system (2) and condensation recovery system (3), its characterized in that:
the feed liquid circulation evaporation system (1) comprises a raw concentrate material box (4), an evaporation inclined plate group (5) and a circulating water tank (10), wherein a water outlet end of the raw concentrate material box (4) is connected with a feed pump (7), the feed pump (7) is connected with one end of the evaporation inclined plate group (5) through a feed liquid dispersing pipe (8), the other end of the evaporation inclined plate group (5) is communicated with the circulating water tank (10) through a liquid outlet collecting pipe (9), a filter screen (11) is arranged in the circulating water tank (10), a centrifugal machine (13) is communicated with one unfiltered end of the filter screen (11) through a diaphragm pump (12), one filtered end of the filter screen (11) is connected with the feed liquid dispersing pipe (8) through a circulating water pump (14), a discharge end of the centrifugal machine (13) is communicated with a solid material box (18) through a discharge valve (17), and a liquid outlet end is communicated with the raw concentrate material box (4);
the utility model provides an air circulation system (2) is including main fan (19), heater (22) and energy recovery fan (21), the air intake intercommunication of main fan (19) and evaporation swash plate group (5), heater (22) have been installed to the air intake of this evaporation swash plate group (5), air outlet one side that heater (22) are located main fan (19) is provided with scattered fan device (23), the air intake connection of main fan (19) has first dehumidifier (24), condensation recovery system (3) is connected through pipeline (25) to the air outlet of evaporation swash plate group (5), the air outlet intercommunication energy recovery fan (21) of condensation recovery system (3), the air outlet of energy recovery fan (21) with the air outlet of main fan (19) is linked together, forms cyclic connection.
2. The low-temperature evaporator with heat energy recovery function for wastewater according to claim 1, wherein the condensation recovery system (3) comprises a condenser (28) and a heat exchanger (29) which are communicated with a pipeline (25), an external air inlet of the condenser (28) is respectively connected with an air supplementing fan (31) and a refrigerating device (32) through an air inlet pipe (30), a water outlet is communicated with a condensation water tank (35), an external air inlet of the heat exchanger (29) is communicated with a second dehumidifier (34), and the water outlet is communicated with the condensation water tank (35).
3. A waste water low temperature evaporator with heat energy recovery according to claim 2, characterized in that a cold air supplementing amount adjusting valve (37) is connected between the cold air supplementing machine (31) and the condenser (28), and a refrigerating air amount adjusting valve (38) is connected between the refrigerating device (32) and the condenser (28).
4. A waste water cryogenic evaporator with heat energy recovery according to claim 1, characterized in that the water inlet end of the liquid inlet dispersion pipe (8) is connected with a regulating valve (16).
5. The wastewater low-temperature evaporator with heat energy recovery according to claim 1, wherein the air inlet of the evaporation inclined plate group (5) is positioned at the water outlet end of the evaporation inclined plate group (5).
6. The low-temperature evaporator for wastewater with heat energy recovery according to claim 1, wherein an air inlet of the energy recovery fan (21) is connected with an energy recovery air quantity regulating valve (26), and an air outlet is connected with a one-way valve (27).
7. A waste water cryogenic evaporator with heat recovery according to claim 2, characterized in that both the condenser (28) and the heat exchanger (29) are provided with cold air heat exchange air outlets (36).
8. A waste water cryogenic evaporator with heat energy recovery according to claim 1, characterized in that the evaporation swash plate group (5) is arranged inclined with respect to the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320224820.3U CN219567625U (en) | 2023-02-15 | 2023-02-15 | Waste water low temperature evaporator with heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320224820.3U CN219567625U (en) | 2023-02-15 | 2023-02-15 | Waste water low temperature evaporator with heat recovery |
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| Publication Number | Publication Date |
|---|---|
| CN219567625U true CN219567625U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320224820.3U Active CN219567625U (en) | 2023-02-15 | 2023-02-15 | Waste water low temperature evaporator with heat recovery |
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| CN (1) | CN219567625U (en) |
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2023
- 2023-02-15 CN CN202320224820.3U patent/CN219567625U/en active Active
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