CN210367047U - Multistage flash distillation desulfurization effluent treatment plant - Google Patents
Multistage flash distillation desulfurization effluent treatment plant Download PDFInfo
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- CN210367047U CN210367047U CN201920868653.XU CN201920868653U CN210367047U CN 210367047 U CN210367047 U CN 210367047U CN 201920868653 U CN201920868653 U CN 201920868653U CN 210367047 U CN210367047 U CN 210367047U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 50
- 230000023556 desulfurization Effects 0.000 title claims abstract description 50
- 238000007701 flash-distillation Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 239000002351 wastewater Substances 0.000 claims abstract description 65
- 238000004821 distillation Methods 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 14
- 230000005494 condensation Effects 0.000 claims description 14
- 238000009835 boiling Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 13
- 230000008020 evaporation Effects 0.000 description 13
- 239000007788 liquid Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A multi-stage flash distillation desulfurization wastewater treatment device comprises a wastewater buffer tank, a heating system, a primary distillation system, a secondary distillation system, a tertiary distillation system and a concentrated solution tank which are sequentially connected by pipelines; in the primary distillation system, a primary distiller is communicated with a primary heater through a pipeline to form a circulation loop, the primary heater is also communicated with a heat exchanger and a condensed water tank at the head end, and the condensed water tank is communicated with the heat exchanger; in the secondary distillation system, a primary distiller is in steam communication with a secondary heater, the primary distiller is also in communication with the secondary distiller, the secondary distiller is communicated with the secondary heater through a pipeline to form a circulation loop, and the secondary heater is also in communication with a tail end condensate water tank; in the third-stage distillation system, a second-stage distiller and a third-stage heater are communicated, the second-stage distiller is communicated with the third-stage distiller, the third-stage heater is also communicated with a tail end condensed water tank, and the third-stage distiller is also communicated with a cooler and a concentrated solution tank. Realizing the effects of energy conservation and high-efficiency wastewater treatment.
Description
Technical Field
The utility model relates to a wastewater treatment device, in particular to a multistage flash distillation desulfurization wastewater treatment device.
Background
The desulfurization wastewater treatment generally comprises three processes of pretreatment, concentration and decrement and tail liquid solidification treatment, and the traditional treatment technology generally adopts the steps of dosing neutralization, flocculation and precipitation (namely three-header pretreatment), and then the tail liquid is crystallized and solidified through reverse osmosis concentration and decrement. The old process is carried out by chemical means, has large investment, long process route and high operating cost, and needs to add chemicals, input steam, generate sludge and the like in the treatment process. Therefore, the desulfurization waste water treatment device with less waste discharge, simple flow and high treatment efficiency is a product urgently needed in the market at present.
Disclosure of Invention
In order to solve the above problem, the utility model provides a following scheme:
a multi-stage flash distillation desulfurization wastewater treatment device comprises a wastewater buffer tank, a heating system, a primary distillation system, a secondary distillation system, a tertiary distillation system and a concentrated solution tank which are sequentially connected by pipelines;
the primary distillation system comprises a primary heater and a primary distiller; the secondary distillation system comprises a secondary heater, a secondary distiller and a tail end condensation water tank; the three-stage distillation system comprises a three-stage heater, a three-stage distiller and a cooler; the heating system comprises a heat exchanger arranged in a front-end process and a head-end condensed water tank;
a steam outlet of the heat exchanger is communicated with a steam inlet of the primary heater, a condensate outlet of the primary heater is communicated with an inlet of the head-end condensate water tank, a water outlet of the head-end condensate water tank is communicated with a water inlet of the heat exchanger, and a vacuum pump at the head end is communicated with the head-end condensate water tank;
the wastewater buffer tank is communicated with a water inlet of the primary distiller, a water outlet of the primary distiller is communicated with a water inlet of the primary heater, a water outlet of the primary heater is communicated with a water inlet of the primary distiller, and the primary distiller is communicated with the secondary distiller;
a steam outlet of the primary distiller is communicated with a steam inlet of the secondary heater, a condensate outlet of the secondary heater is communicated with a tail end condensate water tank, a water outlet of the primary distiller is also communicated with a water inlet of the secondary heater, a water outlet of the secondary distiller is communicated with a water inlet of the secondary heater, and the secondary distiller is communicated with the tertiary distiller;
a steam outlet of the second-stage distiller is communicated with a steam inlet of the third-stage heater, a condensate outlet of the third-stage heater is communicated with a tail end condensate water tank, a water outlet of the third-stage distiller is communicated with a water inlet of the third-stage heater and a water inlet of the concentrated solution tank, a water outlet of the third-stage heater is communicated with a water inlet of the third-stage distiller, a steam outlet of the third-stage distiller is communicated with a cooler, and a condensate outlet of the cooler is communicated with;
the vapor outlet of the concentrated solution tank is communicated with the cooler, and the three-stage distiller is communicated with the concentrated solution tank.
Furthermore, a first-stage circulating pump, a second-stage circulating pump and a third-stage circulating pump are respectively arranged on a pipeline communicated with the water inlet of the first-stage heater and the water outlet of the first-stage distiller, a pipeline communicated with the water inlet of the second-stage heater and a pipeline communicated with the third-stage heater and the water outlet of the third-stage distiller.
Furthermore, a condensing pump is arranged on a pipeline for communicating the head end condensing water tank with the heat exchanger.
Furthermore, demineralized water is injected into the heat exchanger, and the demineralized water absorbs the heat of the flue and turns into water vapor which then enters the primary heater to provide heat for the primary heater.
Furthermore, all be provided with the valve on the pipeline for the control flow.
Furthermore, a vacuum pump is respectively arranged on the head end condensate tank and the tail end condensate tank to control the boiling point of the wastewater distillation.
In desulfurization waste water collects waste water buffer tank, desulfurization waste water carries out the primary concentration by waste water buffer tank entering one-level distillation system in, carries out the secondary concentration after accomplishing the primary concentration and handles in getting into the secondary distillation system, carries out tertiary concentration after the secondary concentration is handled and carries out tertiary concentration in getting into tertiary distillation system, and the concentrated solution that obtains after the tertiary treatment is concentrated is collected by the thick liquid jar and is concentrated the subsequent process of row.
Desulfurized wastewater enters a primary distillation system from a wastewater buffer tank, a primary heater provides heat to heat the desulfurized wastewater by a heat exchanger, the heat exchanger is arranged on a flue of a front-end process, desalted water is injected into the heat exchanger, the desalted water absorbs heat of the flue and evaporates to form steam, the steam enters the primary heater to provide heat for the primary heater, the heated desulfurized wastewater enters a primary distiller to be subjected to flash distillation treatment, the steam is condensed into desalted water after the desulfurized wastewater is heated by the primary heater, the desalted water enters a head-end condensation water tank and then is re-injected into the heat exchanger under the action of a condensate pump to continuously absorb the heat of the flue to provide heat for the primary heater, the flashed desulfurized wastewater enters the primary heater again to be heated under the action of a primary circulating pump, primary concentration treatment is carried out on the desulfurized wastewater in such a circulating manner, after the treatment, the desulfurization wastewater which finishes the primary concentration treatment under the action of pressure difference enters a secondary distillation system, steam generated by flash evaporation in a primary distiller is introduced into a secondary heater to provide heat for the secondary heater, the desulfurization wastewater is heated in the secondary heater and then enters a secondary distiller to be subjected to flash evaporation distillation treatment, the steam after flash evaporation enters the secondary heater to be continuously heated under the action of a secondary circulating pump and then enters the secondary distiller again, the secondary concentration treatment is finished in such a circulating way, the steam in the secondary heater provides heat and is condensed into water to enter a tail end condensation water tank to be discharged and recycled, the desulfurization wastewater after the secondary concentration treatment enters a tertiary concentration system, the desulfurization wastewater enters a tertiary distiller to be subjected to flash evaporation treatment, meanwhile, the steam generated in the secondary distiller enters a tertiary heater to provide heat for the tertiary heater, the desulfurization wastewater after the flash evaporation treatment enters the tertiary heater again to be heated under the action of a tertiary circulating pump and then enters, the tertiary concentrated processing is accomplished in so circulation, and the steam is condensed into water and is discharged the retrieval and utilization in getting into terminal condensate water tank after providing the heat in the tertiary heater, and the desulfurization waste water after accomplishing tertiary concentrated processing becomes the concentrate and gets into in the concentrate jar unified discharge and carry out subsequent processing, and steam that produces in the tertiary distiller and the concentrate jar get into the cooler in, lets in the cooling water in the cooler and cools off, and the condensate water after the cooling gets into the retrieval and utilization of discharging in the terminal condensate water tank.
The utility model has the advantages that:
1) really realizing the whole process zero discharge of the wastewater concentration
By adopting the flash distillation concentration technology, the desulfurization wastewater does not need any pretreatment, and is subjected to distillation concentration by a physical method, only clean water and concentrated solution are generated finally, and the concentration process has no real zero emission of wastewater, waste gas and waste solid.
2) The operation cost is low
A pretreatment system is not needed, so that on one hand, the high medicament cost and the operation cost required by pretreatment are reduced, and on the other hand, the recontamination of the wastewater due to dosing is reduced; the tail flue gas waste heat is used for heating, and no steam is consumed; the system of the flash distillation concentration technology is simple, the automation degree is high, and no operation and maintenance personnel are required to be added; no medicine is needed after the operation; no consumable material is used, and only the electricity fee is consumed; the highest recovery quality water can reach 90 percent, and the water cost can be saved. The cost of treatment per ton of water is less than 10 yuan.
3) The waste heat at the tail part of the flue is utilized, the energy is saved and the consumption is reduced:
and a three-stage flash distillation technology is adopted, so that the cascade utilization of energy is realized, and the utilization rate of the energy is improved. The heat of the condensed water at the outlet of the flue gas heat exchanger is utilized to heat the desulfurization wastewater, no external steam is input in the whole evaporation process, and low energy consumption is realized. The waste heat at the tail part of the flue is utilized, so that the waste heat utilization is achieved, and the temperature of the flue gas entering the desulfurization system can be reduced, thereby reducing the water consumption of the desulfurization system. The temperature of the flue gas entering the desulfurization system can be reduced by about 5-8 ℃ through heating the flue gas.
4) The recovery rate of waste water is high, and the quality of recovered water is excellent:
through the desulfurization wastewater flash distillation, distillation and concentration treatment, the maximum wastewater recovery rate can reach 90%, and the concentration can be adjusted freely, continuously and automatically. After flash evaporation, the water obtained after evaporation and condensation of the desulfurization wastewater belongs to distilled product water and can be used for boiler water supplement.
5) The system is simple, the maintenance volume is little, and degree of automation is high:
the desulfurization wastewater flash evaporation concentration system adjusts the liquid level, the concentration and the temperature in the container by controlling the operation of a pump and a valve. By optimizing system control, remote monitoring, one-key starting and unattended operation can be realized.
The main equipment of the system is a container and a pump, as long as the pump is subjected to routine maintenance.
6) The whole system can not scale:
the salt in the desulfurization wastewater mainly exists in the form of sulfate, chloride, sulfite and carbonate, in the flash distillation concentration system, the sulfate is used as a crystal seed for absorbing calcium and magnesium ions in the system, and measures such as low-temperature distillation (reducing the precipitation of calcium and magnesium ions), large-flow scouring of a circulating pump and the like are added, so that the whole flash distillation concentration process is free from scaling.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1. A wastewater buffer tank; 2. a flue; 3. a heat exchanger; 4. a primary heater; 5. a first-stage circulating pump; 6. a condensate pump; 7. a head end condensate tank; 8. a tail end condensation water tank; 9. a cooler; 10. a three-stage circulating pump; 11. a concentrated solution tank; 12. a tertiary heater; 13. a third distiller; 14. a secondary distiller; 15. a secondary heater; 16. a primary distiller; 17. a second-stage circulating pump; 18. a head end vacuum pump; 19. a tail end vacuum pump.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings:
example 1: the utility model provides a multistage flash distillation desulfurization effluent treatment plant, includes waste water buffer tank 1, heating system, one-level distillation system, second grade distillation system, tertiary distillation system and thick liquid jar 11 by the pipe connection in proper order.
The heating system comprises a flue heat exchanger 3 arranged in the front-end process, a head-end condensed water tank 7, a head-end vacuum pump 18 and a condensing pump 6; the primary distillation system comprises a primary heater 4, a primary distiller 16 and a primary circulating pump 5; the secondary distillation system comprises a secondary heater 15, a secondary distiller 14, a secondary circulating pump 17 and a tail end condensation water tank 8; the three-stage distillation system comprises a three-stage heater 12, a three-stage distiller 13, a three-stage circulating pump 10 and a cooler 9.
The steam outlet of the heat exchanger 3 is communicated with the steam inlet of the primary heater 4, the condensed water outlet of the primary heater 4 is communicated with the inlet of the head end condensed water tank 7, the water outlet of the head end condensed water tank 7 is communicated with the water inlet of the heat exchanger 3, and the head end vacuum pump 18 is communicated with the head end condensed water tank 7.
The wastewater buffer tank 1 is communicated with a water inlet of a primary distiller 16, a water outlet of the primary distiller 16 is communicated with a water inlet of a primary heater 4, a water outlet of the primary heater 4 is communicated with a water inlet of the primary distiller 16, and meanwhile, the primary distiller 16 is communicated with a secondary distiller 14; a steam outlet of the primary distiller 16 is communicated with a steam inlet of a secondary heater 15, a condensed water outlet of the secondary heater 15 is communicated with a tail end condensed water tank 8, a water outlet of the secondary distiller 14 is communicated with a water inlet of the secondary heater 15, and meanwhile, the secondary distiller 16 is communicated with a tertiary distiller 13;
a steam outlet of the second-stage distiller 14 is communicated with a steam inlet of the third-stage heater 12, a condensate outlet of the third-stage heater 12 is communicated with the tail end condensate water tank 8, a water outlet of the third-stage distiller 13 is communicated with a water inlet of the third-stage heater 12 and a water inlet of the concentrated solution tank 11, a water outlet of the third-stage heater 12 is communicated with a water inlet of the third-stage distiller 13, a steam outlet of the third-stage distiller 13 is communicated with the cooler 9, and a condensate outlet of the cooler 9 is communicated with the; the vapor outlet of the concentrated solution tank 11 is communicated with the cooler 9, and the three-stage distiller 13 is communicated with the concentrated solution tank 11. The tail end vacuum pump 19 is communicated with the tail end condensation water tank 8.
The heat exchanger 3 is filled with demineralized water, and the demineralized water absorbs the heat of the flue 2 to become steam which enters the primary heater 4 to provide heat for the primary heater 4. The pipeline is provided with valves for controlling the flow.
In desulfurization waste water collects waste water buffer tank 1, desulfurization waste water carries out the primary concentration by waste water buffer tank 1 entering one-level distillation system in, carries out the secondary concentration after accomplishing the primary concentration and handles in getting into the secondary distillation system, carries out tertiary concentration after the secondary concentration is handled and handles in getting into tertiary distillation system, and the concentrate that obtains after the tertiary concentration is handled is collected by thick liquid jar 11 and is concentrated the subsequent process of row.
A heating system: first-order heater 4 is provided heat by heat exchanger 3 and is heated desulfurization waste water, heat exchanger 3 is installed on the flue 2 of front end process, it has demineralized water to annotate in the heat exchanger 3, the heat evaporation of demineralized water absorption flue 2 is vapor, vapor gets into and provides heat for first-order heater 4 in the first-order heater 4, the vapor condensation becomes demineralized water after heating desulfurization waste water in first-order heater 4, get into in head end condensation water tank 7 after, reinjection heat exchanger 3 under the effect of condensate pump 6, continue to absorb 2 heats of flue and provide heat for first-order heater 4.
A primary distillation system: desulfurization waste water gets into one-level distiller 16 by waste water buffer tank 1 in, get into one-level heater 4 through one-level circulating pump 5, desulfurization waste water after the heating reentries one-level distiller 16 and carries out the flash evaporation and handles, so circulate and carry out one-level concentrated processing to desulfurization waste water, after the processing reaches certain concentration, the desulfurization waste water that accomplishes one-level concentrated processing under the effect of pressure differential gets into second grade distiller 14 from one-level distiller 16 and continues the concentration, the steam that 16 distills out gets into the second grade heater, as the 15 heat sources of second grade heater, steam heats desulfurization waste water at second grade heater 15, the condensate water gets into terminal condensation water tank 8, carry out recycle.
A secondary distillation system: the desulfurization waste water that gets into in the second grade distiller 14 by first grade distiller 16, get into second grade heater 15 through second grade circulating pump 17, desulfurization waste water after the heating reentries second grade distiller 14 and carries out the flash evaporation and handles, so circulate and carry out second grade concentration to desulfurization waste water, handle and reach certain concentration after, the desulfurization waste water that accomplishes second grade concentration under the effect of pressure differential gets into third grade distiller 13 from second grade distiller 14 and continues the concentration, steam that second grade distiller 14 evaporated gets into third grade heater, as third grade heater 12 heat source, steam heats desulfurization waste water at third grade heater 12 after, the condensate water gets into terminal condensate tank 8, carry out recycle.
A three-stage distillation system: desulfurization waste water entering a third-stage distiller 13 from a second-stage distiller 14 enters a third-stage heater 12 through a third-stage circulating pump 10, the heated desulfurization waste water enters the third-stage distiller 13 again for flash evaporation treatment, the desulfurization waste water is subjected to third-stage concentration treatment in such a circulating manner, after the treatment reaches a certain concentration, the desulfurization waste water subjected to the third-stage concentration treatment under the action of pressure difference enters a concentrated solution tank 11 from the third-stage distiller 13 to be concentrated, steam evaporated by the third-stage distiller 13 enters a cooler 9, and the steam is condensed into water in the cooler 9 and then enters a tail-end condensate water tank 8 for recycling.
A concentrated solution tank: a small amount of the desulfurization wastewater concentrated solution entering the concentrated solution tank from the three-stage distiller 13 is evaporated, the evaporated steam enters the cooler 9, the steam is condensed into water in the cooler 9 and then enters the tail end condensation water tank 8 for recycling, and the concentrated solution enters the next procedure for continuous treatment.
Claims (6)
1. The utility model provides a multistage flash distillation desulfurization effluent treatment plant which characterized in that: comprises a wastewater buffer tank, a heating system, a primary distillation system, a secondary distillation system, a tertiary distillation system and a concentrated solution tank which are sequentially connected by pipelines;
the primary distillation system comprises a primary heater and a primary distiller; the secondary distillation system comprises a secondary heater, a secondary distiller and a tail end condensation water tank; the three-stage distillation system comprises a three-stage heater, a three-stage distiller and a cooler; the heating system comprises a heat exchanger arranged in a front-end process and a head-end condensed water tank;
a steam outlet of the heat exchanger is communicated with a steam inlet of the primary heater, a condensate outlet of the primary heater is communicated with an inlet of the head-end condensate water tank, a water outlet of the head-end condensate water tank is communicated with a water inlet of the heat exchanger, and a vacuum pump at the head end is communicated with the head-end condensate water tank;
the wastewater buffer tank is communicated with a water inlet of the primary distiller, a water outlet of the primary distiller is communicated with a water inlet of the primary heater, a water outlet of the primary heater is communicated with a water inlet of the primary distiller, and the primary distiller is communicated with the secondary distiller;
a steam outlet of the primary distiller is communicated with a steam inlet of the secondary heater, a condensate outlet of the secondary heater is communicated with a tail end condensate water tank, a water outlet of the primary distiller is also communicated with a water inlet of the secondary heater, a water outlet of the secondary distiller is communicated with a water inlet of the secondary heater, and the secondary distiller is communicated with the tertiary distiller;
a steam outlet of the second-stage distiller is communicated with a steam inlet of the third-stage heater, a condensate outlet of the third-stage heater is communicated with a tail end condensate water tank, a water outlet of the third-stage distiller is communicated with a water inlet of the third-stage heater and a water inlet of the concentrated solution tank, a water outlet of the third-stage heater is communicated with a water inlet of the third-stage distiller, a steam outlet of the third-stage distiller is communicated with a cooler, and a condensate outlet of the cooler is communicated with;
the vapor outlet of the concentrated solution tank is communicated with the cooler, and the three-stage distiller is communicated with the concentrated solution tank.
2. The apparatus for treating desulfurization waste water by multi-stage flash distillation as set forth in claim 1, wherein: and a first-stage circulating pump, a second-stage circulating pump and a third-stage circulating pump are respectively arranged on a pipeline communicated with the water inlet of the first-stage distiller, a pipeline communicated with the water outlet of the second-stage distiller and the water inlet of the second-stage heater and a pipeline communicated with the third-stage heater of the third-stage distiller.
3. The apparatus for treating desulfurization waste water by multi-stage flash distillation as set forth in claim 1, wherein: and a condensing pump is arranged on a pipeline for communicating the head end condensed water tank with the heat exchanger.
4. The apparatus for treating desulfurization waste water by multi-stage flash distillation as set forth in claim 1, wherein: the heat exchanger is filled with demineralized water, and the demineralized water absorbs heat of the flue and turns into steam which enters the primary heater to provide heat for the primary heater.
5. The apparatus for treating desulfurization waste water by multi-stage flash distillation as set forth in claim 1, wherein: the pipeline is provided with valves for controlling the flow.
6. The apparatus for treating desulfurization waste water by multi-stage flash distillation as set forth in claim 1, wherein: and the head end condensation water tank and the tail end condensation water tank are respectively provided with a vacuum pump for controlling the boiling point of the wastewater distillation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920868653.XU CN210367047U (en) | 2019-06-11 | 2019-06-11 | Multistage flash distillation desulfurization effluent treatment plant |
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| CN201920868653.XU CN210367047U (en) | 2019-06-11 | 2019-06-11 | Multistage flash distillation desulfurization effluent treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151990A (en) * | 2021-11-29 | 2022-03-08 | 燕山大学 | Multifunctional multi-stage flash combined heat pump system for comprehensive utilization of desulfurization tower solution |
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2019
- 2019-06-11 CN CN201920868653.XU patent/CN210367047U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151990A (en) * | 2021-11-29 | 2022-03-08 | 燕山大学 | Multifunctional multi-stage flash combined heat pump system for comprehensive utilization of desulfurization tower solution |
| CN114151990B (en) * | 2021-11-29 | 2022-12-20 | 燕山大学 | Multifunctional multi-stage flash combined heat pump system for comprehensive utilization of desulfurization tower solution |
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