CN116768300A - Low-pressure low-temperature evaporation waste liquid treatment system - Google Patents
Low-pressure low-temperature evaporation waste liquid treatment system Download PDFInfo
- Publication number
- CN116768300A CN116768300A CN202310700878.5A CN202310700878A CN116768300A CN 116768300 A CN116768300 A CN 116768300A CN 202310700878 A CN202310700878 A CN 202310700878A CN 116768300 A CN116768300 A CN 116768300A
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- Prior art keywords
- water tank
- low
- stock solution
- liquid
- pressure
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Links
- 238000001704 evaporation Methods 0.000 title claims abstract description 56
- 230000008020 evaporation Effects 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000011550 stock solution Substances 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000013530 defoamer Substances 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims 1
- 238000007710 freezing Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 10
- 239000011259 mixed solution Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 8
- 239000010865 sewage Substances 0.000 description 7
- 238000009835 boiling Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention relates to the technical field of waste liquid treatment, in particular to a low-pressure low-temperature evaporation waste liquid treatment system, which comprises a stock solution evaporation water tank for mixing stock solution and a defoaming agent, wherein the top end of the stock solution evaporation water tank is respectively provided with a stock solution and defoaming agent mixed solution inlet and a clean liquid gas outlet, the lower end of the stock solution evaporation water tank is provided with a concentrated solution outlet, and a heating device is arranged in the stock solution evaporation water tank; the pressure reducing device is connected with the stock solution evaporation water tank through a pipeline and provides a low-pressure environment for the stock solution evaporation water tank; the refrigerating device is connected with the heating device and the pressure reducing device through pipelines and provides heat for the stock solution evaporation water tank; the heat exchange device discharges a small amount of concentrated solution by the third water pump, thereby greatly reducing the amount of waste liquid to be treated, lowering the cost and protecting the environment.
Description
Technical Field
The invention relates to the technical field of waste liquid treatment, in particular to a low-pressure low-temperature evaporation waste liquid treatment system.
Background
The sewage treatment refers to a purification process for treating sewage to reach a certain water body or the requirement of being capable of being reused, a large amount of sewage can be generated in life and various industrial production of people in cities, the sewage can be seriously polluted to the environment if the sewage is directly discharged without treatment, the sewage is generally purified by a high-temperature distillation mode in the current common sewage treatment mode, but chemical reaction can be caused to generate toxic gas in the high-temperature distillation process, and toxic substances are easily generated at high temperature to cause secondary pollution.
Disclosure of Invention
The invention aims to solve the defects that the chemical reaction can be caused to generate toxic gas in the high-temperature distillation process and toxic substances are easy to generate at high temperature to cause secondary pollution in the prior art, and provides a low-pressure low-temperature evaporation waste liquid treatment system.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the low-pressure low-temperature evaporation waste liquid treatment system comprises a stock solution evaporation water tank for mixing stock solution and a defoaming agent, wherein a stock solution and defoaming agent mixed solution inlet and a purified liquid gas outlet are respectively formed in the top end of the stock solution evaporation water tank, a concentrated solution outlet is formed in the lower end of the stock solution evaporation water tank, and a heating device is arranged in the stock solution evaporation water tank; the pressure reducing device is connected with the stock solution evaporation water tank through a pipeline and provides a low-pressure environment for the stock solution evaporation water tank; the refrigerating device is connected with the heating device and the pressure reducing device through pipelines and provides heat for the stock solution evaporation water tank; and one path of the heat exchange device is connected with the stock solution evaporation water tank and the depressurization device, the other path of the heat exchange device is connected with the refrigerating device, and the heat exchange device converts the purified liquid gas into liquid.
Further, the stock solution evaporation water tank is a closed water tank.
Furthermore, the defoamer mixed solution inlet is connected with a first water pump and a defoamer water tank through a pipeline, and the first water pump injects the to-be-treated stock solution into the stock solution evaporation water tank.
Further, the depressurization device comprises a second water pump and a reclaimed water tank.
Further, the refrigerating device comprises a heat exchanger, an expansion valve and a compressor, wherein the heat exchanger is connected with the heat exchange device, and the expansion valve and the compressor are connected with the heating device.
Further, the concentrated solution outlet is connected with a third water pump, and the third water pump provides power for discharging concentrated solution.
The beneficial effects of the invention are as follows:
(1) The evaporation boiling is realized under the low pressure state, so that peculiar smell and harmful substances caused by high temperature are avoided, the clean liquid gas is converted into liquid through the heat exchange device, a large amount of clean water is discharged out of the system through the reclaimed water tank, the refrigerating device and the heat exchange device, a small amount of concentrated solution is discharged through the third water pump, the waste liquid to be treated is greatly reduced, the cost is reduced, and the environment is protected.
(2) The heat exchange device converts the clean liquid gas into liquid and transfers redundant heat to the heat exchanger, and the heat exchanger transfers the heat to the heating device to play a role in auxiliary heating, thereby realizing the secondary utilization of energy and more fully utilizing energy.
Drawings
FIG. 1 is a schematic diagram of a system for evaporating waste liquid at low pressure and low temperature according to the present invention;
in the figure: 1. a stock solution evaporation water tank; 101. a mixed liquid inlet of the stock solution and the defoaming agent; 102. a clean liquid gas outlet; 103. a concentrate discharge port; 104. a heating device; 2. a pressure reducing device; 3. a refrigerating device; 4. a heat exchange device; 5. a first water pump; 6. a defoamer water tank; 7. a second water pump; 8. a reclaimed water tank; 9. and a third water pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In this embodiment, referring to fig. 1, a low-pressure low-temperature evaporation waste liquid treatment system includes a stock solution evaporation water tank 1 for mixing stock solution and defoaming agent, wherein a stock solution and defoaming agent mixed solution inlet 101 and a clean liquid gas outlet 102 are respectively provided at the top end of the stock solution evaporation water tank 1, a concentrated solution outlet 103 is provided at the lower end, and a heating device 104 is installed inside the stock solution evaporation water tank 1; the pressure reducing device 2 is connected with the stock solution evaporation water tank 1 through a pipeline, and the pressure reducing device 2 provides a low-pressure environment for the stock solution evaporation water tank 1; the refrigerating device 3 is connected with the heating device 104 and the depressurization device 2 through pipelines, and the refrigerating device 3 provides heat for the stock solution evaporation water tank 1; and one path of the heat exchange device 4 is connected with the stock solution evaporation water tank 1 and the depressurization device 2, the other path of the heat exchange device 4 is connected with the refrigerating device 3, and the heat exchange device 4 converts clean liquid gas into liquid.
As a preferable mode of the present invention, the stock solution evaporation water tank 1 is a closed water tank.
As a preferred embodiment of the present invention, the defoamer mixed solution inlet 101 is connected to the first water pump 5 and the defoamer water tank 6 through a pipe, and the first water pump 5 injects the raw solution to be treated into the raw solution evaporation water tank 1.
As a preferred embodiment of the present invention, the pressure reducing device 2 includes a second water pump 7 and a regeneration water tank 8.
As a preferred embodiment of the present invention, the refrigerating apparatus 3 includes a heat exchanger 31, an expansion valve 32, and a compressor 33, the heat exchanger 31 is connected to the heat exchanging apparatus 4, and the expansion valve 32 and the compressor 33 are connected to the heating apparatus 104.
As a preferred embodiment of the present invention, the concentrate discharge port 103 is connected to a third water pump 9, and the third water pump 9 provides power for discharging the concentrate.
Working principle: the raw liquid to be treated and the defoaming agent are injected into the raw liquid evaporation water tank 1 through the first water pump 5, the pressure reduction device 2 reduces the internal pressure of the raw liquid evaporation water tank 1, and the refrigerating device 3 converts the refrigerant into a hot refrigerant to provide heat for the heating device 104; the heating device 104 heats the mixed solution of the stock solution and the defoaming agent and realizes evaporation boiling under low pressure, peculiar smell and harmful substances caused by high temperature are avoided by realizing evaporation boiling under low pressure, the clean liquid gas is converted into liquid through the heat exchange device 4, a large amount of clean water is discharged out of the system through the reclaimed water tank 8, the refrigerating device 3 and the heat exchange device 4, and a small amount of concentrated solution is discharged through the third water pump 9, so that the waste liquid amount to be treated is greatly reduced, the cost is reduced, and the environment is protected.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A low pressure low temperature evaporation treatment waste liquid system, comprising:
a raw liquid evaporation water tank (1) for mixing raw liquid and a defoaming agent, wherein a raw liquid and defoaming agent mixed liquid inlet (101) and a purified liquid gas outlet (102) are respectively formed in the top end of the raw liquid evaporation water tank (1), a concentrated liquid outlet (103) is formed in the lower end of the raw liquid evaporation water tank (1), and a heating device (104) is arranged in the raw liquid evaporation water tank (1);
the pressure reducing device (2) is connected with the stock solution evaporation water tank (1) through a pipeline, and the pressure reducing device (2) provides a low-pressure environment for the stock solution evaporation water tank (1);
the refrigerating device (3) is connected with the heating device (104) and the depressurization device (2) through pipelines, and the refrigerating device (3) provides heat for the stock solution evaporation water tank (1);
the heat exchange device (4), heat exchange device (4) are connected with stoste evaporation water tank (1) and depressurization device (2) all the way, and the other way is connected with refrigerating plant (3), and heat exchange device (4) are with clean liquid gas conversion liquid.
2. The low-pressure low-temperature evaporation waste liquid treatment system according to claim 1, wherein the stock solution evaporation water tank (1) is a closed water tank.
3. The low-pressure low-temperature evaporation treatment waste liquid system according to claim 1, wherein the defoamer mixed liquid inlet (101) is connected with a first water pump (5) and a defoamer water tank (6) through pipelines, and the first water pump (5) injects the raw liquid to be treated into the raw liquid evaporation water tank (1).
4. A low pressure and low temperature evaporation treatment waste liquid system according to claim 1, wherein the pressure reducing means (2) comprises a second water pump (7) and a reclaimed water tank (8).
5. A low pressure and low temperature evaporation treatment waste liquid system according to claim 1, wherein said freezing device (3) comprises a heat exchanger (31), an expansion valve (32) and a compressor (33), said heat exchanger (31) being connected to said heat exchange device (4), said expansion valve (32) and compressor (33) being connected to said heating device (104).
6. A low pressure and low temperature evaporation treatment waste liquid system according to claim 1, wherein a third water pump (9) is connected to the concentrate outlet (103), said third water pump (9) powering the discharge of concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700878.5A CN116768300A (en) | 2023-06-14 | 2023-06-14 | Low-pressure low-temperature evaporation waste liquid treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700878.5A CN116768300A (en) | 2023-06-14 | 2023-06-14 | Low-pressure low-temperature evaporation waste liquid treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116768300A true CN116768300A (en) | 2023-09-19 |
Family
ID=88007364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310700878.5A Withdrawn CN116768300A (en) | 2023-06-14 | 2023-06-14 | Low-pressure low-temperature evaporation waste liquid treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116768300A (en) |
-
2023
- 2023-06-14 CN CN202310700878.5A patent/CN116768300A/en not_active Withdrawn
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230919 |