CN219907088U - High-salt water low-temperature heat pump evaporation concentration system - Google Patents
High-salt water low-temperature heat pump evaporation concentration system Download PDFInfo
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- CN219907088U CN219907088U CN202320762639.8U CN202320762639U CN219907088U CN 219907088 U CN219907088 U CN 219907088U CN 202320762639 U CN202320762639 U CN 202320762639U CN 219907088 U CN219907088 U CN 219907088U
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- 238000001704 evaporation Methods 0.000 title claims abstract description 111
- 230000008020 evaporation Effects 0.000 title claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000009833 condensation Methods 0.000 claims abstract description 52
- 230000005494 condensation Effects 0.000 claims abstract description 52
- 239000011550 stock solution Substances 0.000 claims abstract description 18
- 239000002351 wastewater Substances 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 10
- 239000006260 foam Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 19
- 239000012267 brine Substances 0.000 claims description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 9
- 239000000077 insect repellent Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 abstract description 6
- 238000009835 boiling Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses a high-salt water low-temperature heat pump evaporation concentration system, which comprises: the device comprises an evaporation condensing branch, a heat pump branch, a temperature balancing branch, a vacuum branch and a wastewater circulating discharge branch; the evaporation and condensation branch comprises an evaporation kettle and a condensation kettle connected with the evaporation kettle; a connecting pipe is arranged between the evaporating kettle and the condensing kettle, and the connecting pipe is in an inverted U shape; a silk screen foam remover and a spray atomizer are sequentially arranged in the evaporation kettle from top to bottom; and a steam rectifying plate is arranged in the condensation kettle. The utility model utilizes the vacuum branch to reduce the pressure in the evaporation kettle, thereby reducing the boiling point of stock solution, the evaporation kettle and the condensation kettle are separately arranged, thereby realizing the change of the water form at the upper and lower parts of the dew point, realizing the separation of the water and other substances in the wastewater, and simultaneously, the water vapor in the evaporation kettle enters the condensation kettle through the connecting pipe, and the connection pipe of the evaporation kettle and the condensation kettle is of an inverted U-shaped structure, thereby effectively reducing the influence of evaporation entrainment on the water quality.
Description
Technical Field
The utility model relates to the field of evaporation and concentration, in particular to a high-salt water low-temperature heat pump evaporation and concentration system.
Background
The high-salt water includes high-salt domestic wastewater and high-salt industrial wastewater, and mainly refers to wastewater containing organic matters and at least total dissolved solids TDS with mass fraction of 3.5% or more, and the high-salt water treatment equipment is water treatment equipment for treating the wastewater.
However, when the existing high-salt water treatment equipment is used for treating high-salt water, evaporation entrainment is easy to generate in the rising process of evaporation steam under the low-temperature condition, so that the purity of condensate is low.
Disclosure of Invention
The utility model aims to: the high-salt water low-temperature heat pump evaporation concentration system is used for solving the problems of material evaporation concentration, improvement of evaporation condensate purity and the like by improving the cleaning, high efficiency and energy saving of the evaporation equipment after the heat exchange coil is scaled.
The technical scheme is as follows: a high brine low temperature heat pump evaporative concentration system comprising:
the device comprises an evaporation condensing branch, a heat pump branch, a temperature balancing branch, a vacuum branch and a wastewater circulating discharge branch;
the evaporation and condensation branch comprises an evaporation kettle and a condensation kettle connected with the evaporation kettle;
a connecting pipe is arranged between the evaporating kettle and the condensing kettle, and the connecting pipe is in an inverted U shape;
a silk screen foam remover and a spray atomizer are sequentially arranged in the evaporation kettle from top to bottom;
and a steam rectifying plate is arranged in the condensation kettle.
The steam rectifying plate ensures uniform steam distribution of the system.
A detachable flange plate can be designed at the bottom of the evaporation kettle, so that the coil pipe of the evaporation heat exchanger can be conveniently cleaned.
The utility model utilizes the vacuum branch to reduce the pressure in the evaporation kettle, thereby reducing the boiling point of stock solution, the evaporation kettle and the condensation kettle are separately arranged, thereby realizing the change of the water form at the upper and lower parts of the dew point, realizing the separation of the water and other substances in the wastewater, and simultaneously, the water vapor in the evaporation kettle enters the condensation kettle through the connecting pipe, and the connection pipe of the evaporation kettle and the condensation kettle is of an inverted U-shaped structure, thereby effectively reducing the influence of evaporation entrainment on the water quality.
Unlike traditional steam heating and cooling water condensing, the waste water heating and the water steam condensing are completed by the heat pump branch, and according to the thermodynamic reverse Carnot principle, the refrigerant in the heat pump is liquefied and heated, and vaporization and heat absorption are carried out, so that the energy transfer in the system is realized, and the energy consumption of the system is greatly reduced.
In the evaporation kettle, the material to be evaporated and concentrated is subjected to flash evaporation through a top spray atomizer, and part of the material forms film evaporation on the surface of the bottom mosquito-repellent incense coil heat exchanger;
the refrigerant pressurized by the heat pump branch is directly subjected to heat exchange with the material through the mosquito-repellent incense coil heat exchanger, and the evaporation heat exchanger in the evaporation kettle is connected with a pipeline through a clamp, so that the overhaul and the replacement are convenient and quick.
The device is provided with an automatic cleaning function, and can utilize distilled water, tap water or cleaning agents to carry out periodic self-cleaning.
In a further embodiment, the heat pump branch comprises an evaporation heat exchanger arranged at the bottom of the evaporation kettle, a condensation heat exchanger arranged in the condensation kettle, and a scroll compressor connected with the evaporation heat exchanger;
the evaporation heat exchanger is a mosquito-repellent incense coil heat exchanger.
The heat pump branch adopts the vortex compressor, and the compressor is small in size, low in noise, light in weight, small in vibration, small in energy consumption, long in service life, continuous and stable in steam transmission, reliable in operation and clean in steam source.
The refrigerant at the inlet of the evaporator of the heat pump system can be controlled by two throttle valves.
In order to protect the normal operation of the compressor, a replaceable filter vat is arranged on the inlet and outlet of the compressor.
In a further embodiment, the temperature balance branch comprises an air-cooled radiator connected with the condensation kettle and a pipeline heater connected with the spray atomizer;
and an expansion valve is arranged on a pipeline connecting the air-cooled radiator and the condensation kettle.
And the design temperature balance branch circuit is automatically switched and regulated according to the temperature in the tank body, so that the stable operation of the evaporation and condensation system is ensured.
In a further embodiment, the vacuum branch comprises a gas-liquid separator with an air-cooled radiator and an evaporation kettle.
The gas-liquid separator adopts a two-stage gas-liquid separation design, is compatible with the function of a cold water tank, has novel design and can ensure the stable operation of a vacuum branch.
The waste water circulation discharge branch comprises a forced circulation pump connected with the pipeline heater and a circulation branch connected with the forced circulation pump;
the flow branch is connected with a cleaning water input branch, an evaporation stock solution input branch and a cleaning water emptying branch;
regulating valves are arranged among the cleaning water input branch, the evaporation stock solution input branch, the cleaning water discharge branch and the circulation branch;
a discharge valve is arranged between the forced circulation pump and the pipeline heater.
In a further embodiment, a liquid reservoir and a condensate pump are connected below the condensation kettle;
the liquid reservoir is connected with the scroll compressor and the condensing heat exchanger.
Through the design of reservoir for high Wen Qiti and direct condensation water droplet entering condensate water pitcher after the cold, the effectual equipment inner space that has utilized when fully collecting the comdenstion water.
In a further embodiment, a vacuum pump is connected to the condensation kettle.
The beneficial effects are that: the utility model discloses a high-salt water low-temperature heat pump evaporation concentration system, which utilizes a vacuum branch to reduce the pressure in an evaporation kettle so as to reduce the boiling point of stock solution, and the evaporation kettle and a condensation kettle are arranged separately, so that the water form is changed up and down at the dew point, the separation of water and other substances in wastewater is realized, meanwhile, water vapor in the evaporation kettle enters the condensation kettle through a connecting pipe, and the evaporation kettle and the condensation kettle are of an inverted U-shaped structure, thereby effectively reducing the influence of evaporation entrainment on water quality.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The reference numerals are:
1. a wire mesh demister; 2. an evaporation kettle; 3. a spray atomizer; 4. an evaporative heat exchanger; 5. a pipe heater; 6. a forced circulation pump; 7. a scroll compressor; 8. a reservoir; 9. a gas-liquid separator; 10. a condensate pump; 11. an air-cooled radiator; 12. a steam rectifying plate; 13. a condensing heat exchanger; 14. an expansion valve; 15. a condensation kettle; 16. and a vacuum pump.
Detailed Description
The present utility model relates to a high-temperature brine low-temperature heat pump evaporation concentration system, and is explained in detail below by means of specific embodiments.
The device comprises an evaporation condensing branch, a heat pump branch, a temperature balancing branch, a vacuum branch and a wastewater circulating discharge branch;
the evaporation and condensation branch comprises an evaporation kettle 2 and a condensation kettle 15 connected with the evaporation kettle 2;
a connecting pipe is arranged between the evaporation kettle 2 and the condensation kettle 15, and the connecting pipe is in an inverted U shape;
a silk screen foam remover 1 and a spray atomizer 3 are sequentially arranged in the evaporation kettle 2 from top to bottom;
the condensing kettle 15 is internally provided with a steam rectifying plate 12.
The steam rectifying plate 12 ensures uniform steam distribution of the system.
The detachable flange plate can be designed at the bottom of the evaporation kettle 2, so that the coil pipe of the evaporation heat exchanger 4 can be conveniently cleaned.
The bottom of the evaporation kettle 2 and the pipelines between the silk screen foam remover 1 and the evaporation kettle 2 are connected by flanges, if the surface of the evaporation heat exchanger 4 has scaling phenomenon in the running process of the equipment, the equipment can be shut down when the equipment cannot be cleaned by self-cleaning and medicine cleaning, the flanges are opened, the top tank body of the evaporation kettle 2 is lifted off, and the scale is cleaned manually and thoroughly after the evaporation heat exchanger 4 is completely exposed.
According to the utility model, the pressure in the evaporation kettle 2 is reduced by utilizing the vacuum branch, so that the boiling point of stock solution is reduced, the evaporation kettle 2 and the condensation kettle 15 are separately arranged, the water form is changed up and down at the dew point, the separation of water and other substances in wastewater is realized, meanwhile, water vapor in the evaporation kettle 2 enters the condensation kettle 15 through the connecting pipe, and the evaporation kettle 2 and the condensation kettle 15 are in an inverted U-shaped structure, so that the influence of evaporation entrainment on water quality can be effectively reduced.
Unlike traditional steam heating and cooling water condensing, the waste water heating and the water steam condensing are completed by the heat pump branch, and according to the thermodynamic reverse Carnot principle, the refrigerant in the heat pump is liquefied and heated, and vaporization and heat absorption are carried out, so that the energy transfer in the system is realized, and the energy consumption of the system is greatly reduced.
In the evaporation kettle 2, the material to be evaporated and concentrated is subjected to flash evaporation through the top spray atomizer 3, and part of the material forms film evaporation on the surface of the bottom mosquito-repellent incense coil heat exchanger;
the refrigerant pressurized by the heat pump branch is directly subjected to heat exchange with materials through the mosquito-repellent incense coil heat exchanger, and the evaporation heat exchanger 4 in the evaporation kettle 2 is connected with a pipeline through a clamp, so that the overhaul and the replacement are convenient and quick.
The device is provided with an automatic cleaning function, and can utilize distilled water, tap water or cleaning agents to carry out periodic self-cleaning.
The heat pump branch comprises an evaporation heat exchanger 4 arranged at the bottom of the evaporation kettle 2, a condensation heat exchanger 13 arranged in a condensation kettle 15 and a scroll compressor 7 connected with the evaporation heat exchanger 4;
the evaporation heat exchanger 4 is a mosquito-repellent incense type coil heat exchanger.
The heat pump branch adopts the vortex compressor 7, and the compressor is small in size, low in noise, light in weight, small in vibration, small in energy consumption, long in service life, continuous and stable in steam transmission, reliable in operation and clean in steam source.
The refrigerant at the inlet of the evaporator of the heat pump system can be controlled by two throttle valves.
In order to protect the normal operation of the compressor, a replaceable filter vat is arranged on the inlet and outlet of the compressor.
The temperature balance branch comprises an air-cooled radiator 11 connected with a condensation kettle 15 and a pipeline heater 5 connected with the spray atomizer 3;
an expansion valve 14 is arranged on a pipeline connecting the air-cooled radiator 11 and the condensation kettle 15.
And the design temperature balance branch circuit is automatically switched and regulated according to the temperature in the tank body, so that the stable operation of the evaporation and condensation system is ensured.
The vacuum branch comprises a gas-liquid separator 9 connected with an air-cooled radiator 11 and the evaporation kettle 2.
The gas-liquid separator 9 adopts a two-stage gas-liquid separation design, is compatible with the function of a cold water tank, has novel design and can ensure the stable operation of a vacuum branch.
The waste water circulation discharge branch comprises a forced circulation pump 6 connected with the pipeline heater 5 and a circulation branch connected with the forced circulation pump 6;
the flow branch is connected with a cleaning water input branch, an evaporation stock solution input branch and a cleaning water emptying branch;
regulating valves are arranged among the cleaning water input branch, the evaporation stock solution input branch, the cleaning water discharge branch and the circulation branch;
a discharge valve is arranged between the forced circulation pump 6 and the pipeline heater 5.
A liquid storage device 8 and a condensate pump 10 are connected below the condensation kettle 15;
the accumulator 8 is connected to the scroll compressor 7 and the condensing heat exchanger 13.
Through the design of reservoir 8 for high Wen Qiti and direct condensation water droplet entering condensate water pitcher after the cold, the effectual equipment inner space that has utilized when fully collecting the comdenstion water.
The condensing kettle 15 is connected with a vacuum pump 16.
Description of working principle: starting a vacuum pump 16 to reduce the vacuum degree in the system, leading stock solution to enter the evaporation kettle 2 from an evaporation stock solution input branch through a circulating water pump and a pipeline heater 5 under the negative pressure condition, starting the pipeline heater 5 through forced circulation of a forced circulating pump 6 to preheat the stock solution, starting a vortex compressor 7 after the stock solution is heated to a certain temperature, and leading the system to enter a self-circulation spraying falling film evaporation program;
the heated and evaporated water vapor automatically enters the condensation kettle 15 under the action of negative pressure, the vapor exchanges heat with the low-temperature refrigerant in the condensation heat exchanger 13 to be condensed into a liquid state in the process of uniform rising through the rectification action of the vapor distillation plate, and the liquid state is collected into the bottom of the condensation kettle 15, and after condensate in the condensation kettle 15 reaches a certain liquid level, the condensate is discharged from a condensate collecting system outside the system through the condensation water pump 10;
after the stock solution in the evaporation kettle 2 is evaporated and concentrated to a certain concentration, an adjusting valve is opened to supplement the stock solution in a negative pressure environment, the set concentration ratio of the stock solution is reached after repeated liquid feeding for a plurality of times, a discharging valve is switched, and the stock solution enters an external concentrated solution collecting device through a forced circulation pump 6 discharging system;
the heat transfer of evaporation and condensation in the system is mainly completed through the scroll compressor 7;
in order to maintain the heat balance of the system, when the heat of the system is insufficient and the temperature is reduced after liquid feeding and liquid supplementing, the valve is switched, the pipeline heater 5 is opened at the same time, and the valve is switched to close the heating of the pipeline heater 5 after the temperature of the system is increased to a set value;
an electric regulating valve is arranged in a connecting pipeline between the liquid storage device 8 and the evaporation heat exchanger 4, the opening of the electric regulating valve is controlled by the temperature value in the system, and the temperature in the system is always kept in a set range.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.
Claims (7)
1. A high brine low temperature heat pump evaporative concentration system comprising:
the device comprises an evaporation condensing branch, a heat pump branch, a temperature balancing branch, a vacuum branch and a wastewater circulating discharge branch;
the evaporation and condensation branch comprises an evaporation kettle (2) and a condensation kettle (15) connected with the evaporation kettle (2);
a connecting pipe is arranged between the evaporation kettle (2) and the condensation kettle (15), and the connecting pipe is in an inverted U shape;
a silk screen foam remover (1) and a spray atomizer (3) are sequentially arranged in the evaporation kettle (2) from top to bottom;
a steam rectifying plate (12) is arranged in the condensation kettle (15).
2. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: the heat pump branch comprises an evaporation heat exchanger (4) arranged at the bottom of the evaporation kettle (2), a condensation heat exchanger (13) arranged in the condensation kettle (15) and a scroll compressor (7) connected with the evaporation heat exchanger (4);
the evaporation heat exchanger (4) is a mosquito-repellent incense type coil heat exchanger.
3. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: the temperature balance branch comprises an air-cooled radiator (11) connected with the condensation kettle (15) and a pipeline heater (5) connected with the spray atomizer (3);
an expansion valve (14) is arranged on a connecting pipeline of the air-cooled radiator (11) and the condensation kettle (15).
4. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: the vacuum branch comprises a gas-liquid separator (9) connected with an air-cooled radiator (11) and an evaporation kettle (2).
5. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: the waste water circulation discharge branch comprises a forced circulation pump (6) connected with the pipeline heater (5), and a circulation branch connected with the forced circulation pump (6);
the flow branch is connected with a cleaning water input branch, an evaporation stock solution input branch and a cleaning water emptying branch;
regulating valves are arranged among the cleaning water input branch, the evaporation stock solution input branch, the cleaning water discharge branch and the circulation branch;
a discharge valve is arranged between the forced circulation pump (6) and the pipeline heater (5).
6. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: a liquid storage device (8) and a condensate pump (10) are connected below the condensation kettle (15);
the liquid reservoir (8) is connected with the scroll compressor (7) and the condensing heat exchanger (13).
7. The high-temperature brine low-temperature heat pump evaporation concentration system according to claim 1, wherein: and the condensing kettle (15) is connected with a vacuum pump (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320762639.8U CN219907088U (en) | 2023-04-07 | 2023-04-07 | High-salt water low-temperature heat pump evaporation concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320762639.8U CN219907088U (en) | 2023-04-07 | 2023-04-07 | High-salt water low-temperature heat pump evaporation concentration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219907088U true CN219907088U (en) | 2023-10-27 |
Family
ID=88438050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320762639.8U Active CN219907088U (en) | 2023-04-07 | 2023-04-07 | High-salt water low-temperature heat pump evaporation concentration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219907088U (en) |
-
2023
- 2023-04-07 CN CN202320762639.8U patent/CN219907088U/en active Active
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