CN114198736A - Vacuum phase-change flash evaporation condensation heat and water taking device - Google Patents
Vacuum phase-change flash evaporation condensation heat and water taking device Download PDFInfo
- Publication number
- CN114198736A CN114198736A CN202111402431.7A CN202111402431A CN114198736A CN 114198736 A CN114198736 A CN 114198736A CN 202111402431 A CN202111402431 A CN 202111402431A CN 114198736 A CN114198736 A CN 114198736A
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- water
- heat exchanger
- flash evaporation
- heat
- plate heat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000001704 evaporation Methods 0.000 title claims abstract description 19
- 230000008020 evaporation Effects 0.000 title claims abstract description 19
- 238000009833 condensation Methods 0.000 title claims abstract description 13
- 230000005494 condensation Effects 0.000 title claims abstract description 13
- 230000000630 rising effect Effects 0.000 claims description 15
- 238000007701 flash-distillation Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000002893 slag Substances 0.000 abstract description 26
- 238000011010 flushing procedure Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 6
- 239000010842 industrial wastewater Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 1
- -1 Na2O Chemical class 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000019794 sodium silicate Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a vacuum phase-change flash evaporation condensation heat-taking and water-taking device, which belongs to the technical field of waste water heat-taking equipment and comprises a flash evaporation tank, a supercharger and a plate type heat exchanger, wherein the flash evaporation tank is provided with a first water inlet, a first water outlet and a first gas outlet, the supercharger is provided with a second gas inlet and a second gas outlet, the plate type heat exchanger is provided with a third gas inlet, a third water outlet, a fourth water inlet and a fourth water outlet, the first gas outlet is communicated with the second gas inlet, and the second gas outlet is communicated with the third gas inlet. The slag flushing water is vaporized in the flash tank, the vapor with latent heat of vaporization enters the plate heat exchanger after being pressurized by the supercharger, the cleaning water source enters the plate heat exchanger through the fourth water inlet for heat exchange and then enters the heat supply system for heat supply, and in the whole heat taking process, the direct contact between the slag flushing water and the heat exchange wall surface is completely avoided, the problems of blockage, corrosion, crystallization, scale hanging and the like of the slag flushing water and the heat exchange wall surface are avoided, and the service life of the heat exchange system is prolonged.
Description
Technical Field
The invention relates to the technical field of waste water heat-taking equipment, in particular to a vacuum phase-change flash evaporation condensation heat-taking and water-taking device.
Background
The industrial wastewater generated in China every year is up to several billion tons, wherein more than 50% of the industrial wastewater has the temperature of more than 50 ℃, and if the industrial wastewater is completely developed and utilized, the requirement of 13 billion square building heating can be met. Because the components of the industrial wastewater are complex, the components of the process are different. Taking steel-making molten steel as an example, when the iron is smelted in a blast furnace, the temperature of the generated high-temperature slag is between 1400 ℃ and 1500 ℃, the high-temperature slag needs to be flushed and cooled, slag flushing water after slag quenching and granulated slag enter a slag flushing tank together, the granulated slag is left on the upper layer of the slag flushing tank and is sold to a cement plant after being grabbed by a bucket excavator, slag flushing water at about 70 ℃ enters the lower layer of the slag flushing tank after being filtered, and slag flushing water is pumped by a water pump to exchange heat and is flushed again. The heat exchange mainly uses the dividing wall type heat exchange equipment such as a plate heat exchanger, a crab shell type heat exchanger and the like to extract the waste heat, and directly uses the dividing wall type heat exchange equipment to extract the waste heat of the industrial wastewater, so that the heat exchange device can really extract the waste heat of the industrial wastewater with less impurities, simple components and better water quality. But the content of chloride ions in the slag washing water can reach 8000mg/L, and the corrosion is serious. The slag washing water contains a large amount of alkali metals such as Na2O, K2O and the like, and the alkali metals react with silicon dioxide to generate sodium silicate, sodium aluminosilicate, potassium silicate and the like through crystallization. As the hot saturated solution is cooled, the solute precipitates as crystals and becomes attached to the equipment during continuous production. Meanwhile, calcium ions and magnesium ions contained in the blast furnace slag flushing water are easy to react with bicarbonate to generate MgCO3 and CaCO3 precipitates, and the precipitates are easy to deposit on the surface of equipment. The heat transfer coefficient is rapidly reduced and continuously worsened due to the pollution to the heat exchange wall surface, and the slag water channel is blocked and the system is paralyzed in serious conditions. To solve the problems in the prior art, a vacuum phase-change flash evaporation condensation heat and water taking device is provided.
Disclosure of Invention
The invention aims at the problems in the prior art and provides a vacuum phase-change flash evaporation condensation heat-taking and water-taking device which is realized by the following technical scheme:
the utility model provides a vacuum phase transition flash distillation condensation gets hot water intake device, includes flash tank, booster and plate heat exchanger, first water inlet, first delivery port and first gas outlet have been seted up to the flash tank, second air inlet and second gas outlet have been seted up to the booster, plate heat exchanger has seted up third air inlet, third delivery port, fourth water inlet and fourth delivery port, first gas outlet and second air inlet intercommunication, second gas outlet and third air inlet intercommunication, first water inlet intercommunication has first intake pump.
The invention is further configured to: the flash tank is provided with five groups, the booster is provided with five groups, plate heat exchanger is provided with five groups, five groups the flash tank is established ties in proper order, five groups the booster communicates with flash tank and plate heat exchanger respectively, plate heat exchanger's delivery port intercommunication has the three-way valve, the three-way valve is provided with four groups, the three-way valve includes A port, B port and C port, A port and fourth delivery port intercommunication, B port and fourth water inlet intercommunication.
The invention is further configured to: the plate heat exchanger is provided with five groups of temperature rising gradients, wherein the first gradient is 45-49 ℃, the second temperature rising gradient is 49-53 ℃, the third temperature rising gradient is 53-57 ℃, the fourth temperature rising gradient is 57-61 ℃, and the fifth temperature rising gradient is 61-63 ℃.
The invention is further configured to: and five groups of flash tanks are arranged in a skid-mounted manner.
The invention is further configured to: and the five groups of plate heat exchangers are arranged in a skid-mounted manner.
In conclusion, the beneficial technical effects of the invention are as follows:
the first water inlet pump conveys the slag flushing water into the flash tank, and the slag flushing water is vaporized in the flash tank due to the reduction of the air pressure in the flash tank (the boiling point of the water under the standard atmosphere is 100 ℃, the boiling point can be reduced along with the reduction of the air pressure, and the water at 0 ℃ can also boil under the condition of proper vacuum), and can absorb a large amount of heat in water and the environment in the process of changing the water from a liquid state to a vapor state (boiling), so that the heat is converted into latent heat to be stored in water vapor. In the whole heat taking process, the direct contact between the slag flushing water and the heat exchange wall surface is completely avoided, so that the problems of blockage, corrosion, crystallization, scale hanging and the like of the slag flushing water and the heat exchange wall surface are thoroughly solved, and the service life of a heat exchange system is prolonged.
Drawings
Fig. 1 is a front view for showing the overall structure of the present embodiment;
fig. 2 is a first isometric view for showing the overall construction of the present embodiment;
fig. 3 is a first isometric view for showing the overall construction of the present embodiment;
FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3;
FIG. 5 is a diagram for showing the comparison between the effect of the present embodiment and other devices;
fig. 6 is a view for showing actual installation of the present embodiment.
Reference numerals: 1. a flash tank; 11. a first water inlet; 12. a first water outlet; 13. a first air outlet; 2. a supercharger; 21. a second air inlet; 22. a second air outlet; 3. a plate heat exchanger; 31. a third air inlet; 32. a third water outlet; 33. a fourth water inlet; 34. a fourth water outlet; 4. a first water inlet pump; 5. a three-way valve; 51. an A port; 52. a port B; 53. and C port.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
As shown in fig. 1-6, the vacuum phase-change flash evaporation condensation heat-extraction water-taking device disclosed by the invention comprises a flash evaporation tank 1, a supercharger 2 and a plate heat exchanger 3, wherein the flash evaporation tank 1 is provided with a first water inlet 11, a first water outlet 12 and a first air outlet 13, the supercharger 2 is provided with a second air inlet 21 and a second air outlet 22, the plate heat exchanger 3 is provided with a third air inlet 31, a third water outlet 32, a fourth water inlet 33 and a fourth water outlet 34, the first air outlet 13 is communicated with the second air inlet 21, the second air outlet 22 is communicated with the third air inlet 31, and the first water inlet 11 is communicated with a first water inlet pump 4. The first water inlet pump 4 conveys the slag flushing water into the flash tank 1, the slag flushing water is vaporized in the flash tank 1 due to the reduction of the air pressure in the flash tank 1 (the boiling point of the water under the standard atmosphere is 100 ℃, the boiling point can be reduced along with the reduction of the air pressure, and the water at 0 ℃ can also be boiled under the condition of proper vacuum), and in the process that the water is changed from the liquid state to the steam state (boiling), a large amount of heat in water and the environment can be absorbed, so that the heat is converted into latent heat to be stored in the water vapor. In the whole heat taking process, the direct contact between the slag flushing water and the heat exchange wall surface is completely avoided, so that the problems of blockage, corrosion, crystallization, scale hanging and the like of the slag flushing water and the heat exchange wall surface are thoroughly solved, and the service life of a heat exchange system is prolonged.
The flash tank 1 is provided with five groups, the booster 2 is provided with five groups, the plate heat exchanger 3 is provided with five groups, the five groups of flash tanks 1 are sequentially connected in series, the five groups of boosters 2 are respectively communicated with the flash tank 1 and the plate heat exchanger 3, a water outlet of the plate heat exchanger 3 is communicated with a three-way valve 5, the three-way valve 5 is provided with four groups, the plate heat exchanger 3 is communicated through the three-way valve 5, the three-way valve 5 comprises an A port 51, a B port 52 and a C port 53, the A port 51 is communicated with a fourth water outlet 34, and the B port 52 is communicated with a fourth water inlet 33. The port C53 is connected with a heating system, and the plate heat exchanger 3 heats the clean water source according to the temperature gradient, so that different temperature requirements of different users on the clean water source are met. The plate heat exchanger 3 is provided with five groups of temperature rising gradients, wherein the first gradient is 45-49 ℃, the second temperature rising gradient is 49-53 ℃, the third temperature rising gradient is 53-57 ℃, the fourth temperature rising gradient is 57-61 ℃, and the fifth temperature rising gradient is 61-63 ℃.
In order to conveniently install the flash tank 1 and the plate heat exchanger 3, the flash tank 1 and the plate heat exchanger 3 are respectively arranged in a skid-mounted mode.
Claims (5)
1. The utility model provides a vacuum phase transition flash distillation condensation gets hot water intake device, its characterized in that, includes flash tank (1), booster (2) and plate heat exchanger (3), first water inlet (11), first delivery port (12) and first gas outlet (13) have been seted up in flash tank (1), second air inlet (21) and second gas outlet (22) have been seted up in booster (2), third air inlet (31), third delivery port (32), fourth water inlet (33) and fourth delivery port (34) have been seted up in plate heat exchanger (3), first gas outlet (13) and second air inlet (21) intercommunication, second gas outlet (22) and third air inlet (31) intercommunication, first water inlet (11) intercommunication has first intake pump (4).
2. The vacuum phase-change flash evaporation condensation heat and water taking device according to claim 1, wherein the flash evaporation tank (1) is provided with five groups, the supercharger (2) is provided with five groups, the plate heat exchanger (3) is provided with five groups, the flash evaporation tanks (1) are sequentially connected in series, the supercharger (2) is respectively communicated with the flash evaporation tank (1) and the plate heat exchanger (3), the water outlet of the plate heat exchanger (3) is communicated with a three-way valve (5), the three-way valve (5) is provided with four groups, the three-way valve (5) comprises an A port (51), a B port (52) and a C port (53), the A port (51) is communicated with a fourth water outlet (34), and the B port (52) is communicated with a fourth water inlet (33).
3. The vacuum phase-change flash evaporation condensation heat and water taking device as claimed in claim 2, wherein the plate heat exchanger (3) is provided with five sets of temperature rising gradients, the first gradient is 45-49 ℃, the second temperature rising gradient is 49-53 ℃, the third temperature rising gradient is 53-57 ℃, the fourth temperature rising gradient is 57-61 ℃, and the fifth temperature rising gradient is 61-63 ℃.
4. The vacuum phase-change flash evaporation condensation hot water taking device as claimed in claim 3, wherein five groups of flash evaporation tanks (1) are arranged in a skid-mounted manner.
5. The vacuum phase-change flash evaporation condensation heat and water taking device as claimed in claim 4, wherein five groups of plate heat exchangers (3) are arranged in a skid-mounted manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402431.7A CN114198736A (en) | 2021-11-19 | 2021-11-19 | Vacuum phase-change flash evaporation condensation heat and water taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402431.7A CN114198736A (en) | 2021-11-19 | 2021-11-19 | Vacuum phase-change flash evaporation condensation heat and water taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198736A true CN114198736A (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111402431.7A Pending CN114198736A (en) | 2021-11-19 | 2021-11-19 | Vacuum phase-change flash evaporation condensation heat and water taking device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880101A (en) * | 2014-02-19 | 2014-06-25 | 首钢京唐钢铁联合有限责任公司 | System and technology for realizing low-temperature multi-effect seawater desalination production through residual heat of blast-furnace cinder flushing water |
| CN204593333U (en) * | 2015-03-11 | 2015-08-26 | 江苏河海新能源股份有限公司 | A kind of district heating system based on flash evaporation technology |
| CN206736286U (en) * | 2017-05-15 | 2017-12-12 | 长春市翌瑞达节能环保科技有限公司 | A kind of exhaust heat of slag flushing water recovery system based on flash distillation |
| CN108249499A (en) * | 2018-03-12 | 2018-07-06 | 山东中移能节能环保科技股份有限公司 | The method and device concentrated using hot industry waste water to high-salt wastewater low-temperature evaporation |
| CN210030096U (en) * | 2019-03-13 | 2020-02-07 | 北京华源泰盟节能设备有限公司 | High-temperature sewage heat exchange system |
| CN213265806U (en) * | 2020-09-25 | 2021-05-25 | 山东鲁润热能科技有限公司 | Multi-effect flash evaporation concentration system for salt-containing wastewater driven by waste heat of slag flushing water |
-
2021
- 2021-11-19 CN CN202111402431.7A patent/CN114198736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880101A (en) * | 2014-02-19 | 2014-06-25 | 首钢京唐钢铁联合有限责任公司 | System and technology for realizing low-temperature multi-effect seawater desalination production through residual heat of blast-furnace cinder flushing water |
| CN204593333U (en) * | 2015-03-11 | 2015-08-26 | 江苏河海新能源股份有限公司 | A kind of district heating system based on flash evaporation technology |
| CN206736286U (en) * | 2017-05-15 | 2017-12-12 | 长春市翌瑞达节能环保科技有限公司 | A kind of exhaust heat of slag flushing water recovery system based on flash distillation |
| CN108249499A (en) * | 2018-03-12 | 2018-07-06 | 山东中移能节能环保科技股份有限公司 | The method and device concentrated using hot industry waste water to high-salt wastewater low-temperature evaporation |
| CN210030096U (en) * | 2019-03-13 | 2020-02-07 | 北京华源泰盟节能设备有限公司 | High-temperature sewage heat exchange system |
| CN213265806U (en) * | 2020-09-25 | 2021-05-25 | 山东鲁润热能科技有限公司 | Multi-effect flash evaporation concentration system for salt-containing wastewater driven by waste heat of slag flushing water |
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