CN107344790A - The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system - Google Patents
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system Download PDFInfo
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- CN107344790A CN107344790A CN201710807508.6A CN201710807508A CN107344790A CN 107344790 A CN107344790 A CN 107344790A CN 201710807508 A CN201710807508 A CN 201710807508A CN 107344790 A CN107344790 A CN 107344790A
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- 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
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- 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
- C02F1/043—Details
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- 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
- C02F1/048—Purification of waste water by evaporation
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- 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
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system.It is existing to carry out that desalinization and industrial wastewater treatment device are complicated, power consumption is high and floor space is big using multistage flash evaporation, complicated operating process, driving high energy consumption be present, can not thoroughly solve the drawbacks of Crystallization Plugging in heat exchanger.Integral type gravity stream multi-effect evaporator entrance is connected with the seawater side outlet or industrial wastewater side outlet of thermal source heat exchanger in the present invention, the outlet of integral type gravity stream multi-effect evaporator is connected with cooling tower entrance, cistern is connected with condensing heat exchanger water side entrance, condensing heat exchanger water side outlet is connected with the seawater side outlet of thermal source heat exchanger or industrial wastewater side entrance, integral type gravity stream multi-effect evaporator is at different levels to be connected with corresponding condensing heat exchanger vapour side entrance respectively, condensing heat exchanger vapour side outlet is connected to condensation water tank after collecting, vacuum plant is provided between condensing heat exchanger and condensation water tank.The present invention is used in water treatment procedure.
Description
Technical field
The present invention relates to the fields such as chemical industry and the energy, and in particular to multi-stage flash evaporation technology, is that one kind utilizes the technology to carry out
Desalinization and the system of Industrial Wastewater Treatment.
Background technology
Multistage flash evaporation MSF is the abbreviation of multistage flash distillation method.Multistage flash evaporation is that one kind develops in the 1950s
Come sea water desalination method, it for multiple-effect evaporation fouling it is more serious the shortcomings that and grow up, with equipment it is simple and reliable,
Anti-scaling property is good, be easy to maximization, operating flexibility is big and the advantages that using Lowlevel thermal energy and used heat.Therefore once appearance just
It is applied and develops quickly.Multistage flash vaporization is applied not only to desalinization, and is widely used in thermal power plant, oil
The processing and recovery of the boiler water supply of factory, industrial wastewater and mine bitter, and printing and dyeing industry, paper industry spent lye
Recovery.
Existing multistage flash evaporation device structure is complicated, power consumption is high, floor space is big, such as CN2015106963534 is disclosed
A kind of industrial wastewater Multi-effect evaporation compression apparatus and method, the industrial wastewater handled by it need to be heated to certain height by thermal source
Temperature can be treated journey, heating stepses consuming energy, while the program has operating process in actual moving process
Complicated, driving high energy consumption, can not thoroughly solve the problems such as being crystallized in heat exchanger.
The content of the invention
The present invention is to solve in existing desalinization and During Industrial Wastewater Treatment Process, and operating process is complicated, driving
High energy consumption, can not thoroughly solve the drawbacks of Crystallization Plugging in heat exchanger, the present invention is to solve skill used by above-mentioned technical problem
Art scheme is：
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, it include thermal source heat exchanger,
Integral type gravity stream multiple-effect vacuum phase-change heat-exchanger, solid-liquid separation system, integral type gravity stream multiple-effect vacuum phase-change heat-exchanger bag
Include integral type gravity stream multi-effect evaporator, condensing heat exchanger, condensation water tank and vacuum plant；Solid-liquid separation system includes cooling
Tower, cooling pond, equipment for separating liquid from solid and concentrate cistern；
Seawater side outlet or industrial wastewater side of the described integral type gravity stream multi-effect evaporator entrance with thermal source heat exchanger
Outlet is connected, and the outlet of integral type gravity stream multi-effect evaporator is connected with cooling tower entrance, cooling tower outlet and cooling pond phase
Connection, cooling pond is connected with equipment for separating liquid from solid entrance, and equipment for separating liquid from solid entrance is connected with cistern, cistern with it is cold
Solidifying heat exchanger water side entrance is connected, seawater side outlet or industrial wastewater side of the condensing heat exchanger water side outlet with thermal source heat exchanger
Entrance is connected, and integral type gravity stream multi-effect evaporator is at different levels to be connected with corresponding condensing heat exchanger vapour side entrance respectively, condensation
Heat exchanger vapour side outlet is connected to condensation water tank after collecting, and vacuum plant is provided between condensing heat exchanger and condensation water tank.
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, preferably：One
The integral type gravity stream multi-effect evaporator of formula gravity stream multiple-effect vacuum phase-change heat-exchanger uses and is longitudinally continuous flash distillation mode, its structure
To be divided into multiple independent spaces by multiple throttling arrangements in an evaporator.
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, preferably：Thermal source
The entrance of heat exchanger is connected with driving heat source, and driving heat source derives from hot industry waste water, integral type gravity stream multiple-effect vacuum phase
Become heat exchanger and heat is extracted from hot industry waste water as driving heat source.
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, preferably：One
The condensing heat exchanger of formula gravity stream multiple-effect vacuum phase-change heat-exchanger uses multistage serial arrangement, and it is shell-and-tube heat exchanger, board-like
Heat exchanger, fat pipe formula heat exchanger or spiral heat exchanger.
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, preferably：One
The integral type gravity stream multi-effect evaporator leaving water temperature span of formula gravity stream multiple-effect vacuum phase-change heat-exchanger is 35 DEG C to 45
℃。
The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, preferably：Solid-liquid
Equipment for separating liquid from solid includes filter, bottom filter tank and filter press in piece-rate system.
The invention has the advantages that：
1st, thermal source quality requirements of the invention are low, can use industrial exhaust heat, the used heat such as hot industry waste water, flue gas, exhaust steam
Substitute conventional heat sources to be driven, save the energy.
2nd, integral type gravity stream multiple-effect vacuum phase-change heat-exchanger of the invention uses genesis analysis continuous multi-stage flash evaporation technology,
Continuous multi-stage flash distillation, the outlet of integral type gravity stream integral type gravity stream multi-effect evaporator are carried out using liquid self gravitation, temperature
Only need to configure a water-break pump, condensing heat exchanger entrance only needs to configure a supply-water pump, and relatively conventional multi-stage flash evaporation technology is equal
80% floor space can be saved under operating mode, while decreases water pump quantity and operation energy consumption.
3rd, the integral type gravity stream integral type gravity stream that the present invention passes through integral type gravity stream multiple-effect vacuum phase-change heat-exchanger
Cooperated between multi-effect evaporator and condensing heat exchanger and be effectively simplified number of assembling steps, reduce assembling difficulty.
4th, the present invention is without outer row, and flash concentration cools step by step for the course of work and current of heating of being absorbed heat step by step by current
The course of work complement each other to form the reciprocation cycle process of zero discharge waste-water.Current are finally from integral type gravity in cyclic process
The integral type gravity stream integral type gravity stream multi-effect evaporator outlet of stream multiple-effect vacuum phase-change heat-exchanger exits into cooling tower, passes through
The condensing heat exchanger water side of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger is passed through after being mixed after separation of solid and liquid with industrial wastewater
In entrance, complete water treatment procedure is formed.
5th, the present invention is applied widely, can be applied to the concentration process of desalting process or industrial wastewater,
In addition the present invention can also individually extract heat for heat supply, low plus concurrent heating.
6th, in the present invention current absorb heat step by step heating the course of work and current flash cooled step by step the course of work it is mutual
Coordinate the processing procedure for effectively realizing reciprocation cycle formula.What the course of work of current stepped heating effectively realized industrial wastewater puies forward heat
Process, the course of work that current cool down step by step effectively realize the concentration process of industrial wastewater by flash evaporation.Two processes are each
From independent progress.It is temperature-rise period wherein to put forward thermal process, and each heat exchanger nodeless mesh thing produces, and temperature-fall period is by controlling one
Formula gravity stream integral type gravity stream multi-effect evaporator outlet temperature, ensures the crystal of industrial wastewater in cooling tower cooling procedure
Middle precipitation, and the cyclic process in heat exchanger is unsaturation solution, so as to effectively avoid crystal from blocking heat exchanger.Effectively
Ensure water treatmenting performance of the invention reliably and with long-term, while the service life of the present invention can also be extended.
Brief description of the drawings
Fig. 1 is the first operation principle schematic diagram of the present invention, and the present invention is illustrated in figure and handles the universal of various waste water
The course of work；
Fig. 2 is the second operation principle schematic diagram of the present invention, and of the invention utilize is illustrated in figure and is carried in hot industry waste water
Heat is taken to carry out the course of work of temperature raising processing industrial wastewater as driving heat source 4；
Fig. 3 is the 3rd operation principle schematic diagram of the present invention, and the present invention is illustrated in figure and carries out the worked of Seawater Treatment
Journey.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 3, present embodiment exchanges heat including thermal source
Device 1, integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2, solid-liquid separation system 3, integral type gravity stream multiple-effect vacuum phase inversion
Hot device 2 includes integral type gravity stream multi-effect evaporator 2-1, condensing heat exchanger 2-2, condensation water tank 2-3 and vacuum plant 2-4；
Solid-liquid separation system 3 includes cooling tower 3-1, cooling pond 3-2, equipment for separating liquid from solid 3-3 and concentrate cistern 3-4；
The seawater side outlet or Industry Waste of described integral type gravity stream multi-effect evaporator 2-1 entrances and thermal source heat exchanger 1
Water side outlet is connected, and integral type gravity stream multi-effect evaporator 2-1 outlets are connected with cooling tower 3-1 entrances, and cooling tower 3-1 goes out
Mouth is connected with cooling pond 3-2, and cooling pond 3-2 is connected with equipment for separating liquid from solid 3-3 entrances, equipment for separating liquid from solid 3-3 entrances
It is connected with cistern 3-4, cistern 3-4 is connected with condensing heat exchanger 2-2 water side entrance, and condensing heat exchanger 2-2 water side goes out
Mouth is connected with the seawater side outlet of thermal source heat exchanger 1 or industrial wastewater side entrance, and integral type gravity stream multi-effect evaporator 2-1 is each
Level is connected with corresponding condensing heat exchanger 2-2 vapour side entrance respectively, and condensing heat exchanger 2-2 vapour side outlets are connected to condensation after collecting
Water tank 2-3, vacuum plant 2-4 is provided between condensing heat exchanger 2-2 and condensation water tank 2-3.
Integral type gravity stream multi-effect evaporator in present embodiment in integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2
For 2-1 using flash distillation mode is longitudinally continuous, its structure is to be divided into multiple independent skies by multiple throttling arrangements in 1 evaporator
Between, condensing heat exchanger 2-2 includes more condensers, and more condensers are arranged in order from top to bottom, and integral type gravity stream multiple-effect is steamed
Send out device and correspond setting with condenser, the vapour side entrance of the corresponding condenser of every grade of evaporator is connected.
The vaporizer side of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 refers to integral type gravity in present embodiment
Side where flowing multi-effect evaporator 2-1, side where the condensing heat exchanger 2-2 that the condenser side of multi-stage vacuum phase-change heat-exchanger 2 refers to.It is cold
There are condensing heat exchanger vapour side and condensing heat exchanger water side inside solidifying heat exchanger 2-2, realize the process of steam-water heat exchanging, its course of work
It is identical with existing condensing heat exchanger.
Industry Waste water source 5 provides pending industrial wastewater, Industry Waste water source 5 and cooling pond 3-2 phases in present embodiment
Connection.
Embodiment two：Illustrate present embodiment, integral type gravity stream multiple-effect vacuum phase with reference to Fig. 1, Fig. 2 and Fig. 3
Become the integral type gravity stream multi-effect evaporator 2-1 of heat exchanger 2 using flash distillation mode is longitudinally continuous, its structure is in an evaporator
It is divided into multiple independent spaces by multiple throttling arrangements.
The integral type gravity stream multi-effect evaporator 2-1 of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 is connected using longitudinal direction
Continuous flash distillation mode, its structure is to be divided into multiple independent inner chambers by multiple throttling arrangements in an evaporator, each independent
Inner chamber be one-level evaporator inner chamber.
The integral type gravity stream multi-effect evaporator 2-1 of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 is connected using longitudinal direction
Continuous flash distillation mode, liquid can cool 60 from integral type gravity stream integral type gravity stream multi-effect evaporator 2-1 entrances to outlet maximum
DEG C~70 DEG C；Condensing heat exchanger 2-2, which is adopted, to be connected serially, and is connected in integral type gravity stream multi-effect evaporators at different levels,
Current stepped heating is realized, water side liquid maximum can heat up 60 DEG C~70 DEG C.Other NM contents and embodiment
One is identical.
Embodiment three：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 3, the entrance of thermal source heat exchanger 1 is connected with
Driving heat source 4, driving heat source 4 derive from hot industry waste water, and integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 is from high temperature work
Heat is extracted in industry waste water as driving heat source 4.
Driving heat source 4 is exactly hot industry waste water in present embodiment, utilizes integral type gravity stream multiple-effect vacuum phase inversion
Hot device 2 extracts heat from hot industry waste water and carries out water process as driving heat source 4.
Present embodiment includes putting forward hot integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 1, water process integral type gravity stream
Multiple-effect vacuum phase-change heat-exchanger 2 and solid-liquid separation system 3, carrying hot integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 1 includes one
Body formula gravity stream multi-effect evaporator 1-1, condensing heat exchanger 1-2, condensation water tank 1-3 and vacuum plant 1-4, water process integral type
Gravity stream multiple-effect vacuum phase-change heat-exchanger 2 includes integral type gravity stream multi-effect evaporator 2-1, condensing heat exchanger 2-2, condensation water tank
2-3 and vacuum plant 2-4, solid-liquid separation system 3 include cooling tower 3-1, cooling pond 3-2, equipment for separating liquid from solid 3-3 and concentration
Liquid cistern 3-4；
The integral type gravity stream multi-effect evaporator 2-1 of the water process integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2
Entrance is connected with carrying the condensing heat exchanger 1-2 water side outlets of hot integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 1, water process
It is true that the condensing heat exchanger 2-2 water side outlets of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 put forward hot integral type gravity stream multiple-effect
The condensing heat exchanger 1-2 water side entrance of empty phase-change heat-exchanger 1 is connected, and carries hot integral type gravity stream multiple-effect vacuum phase-change heat-exchanger
1 integral type gravity stream multi-effect evaporator 1-1 entrance connects with Industry Waste water source high-temperature technology section, outlet and Industry Waste water source
Low-temperature zone connects, and other structures and annexation are identical with embodiment one or two.
Embodiment four：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 3, integral type gravity in present embodiment
The condensing heat exchanger 2-2 of stream multiple-effect vacuum phase-change heat-exchanger 2 use multistage serial arrangement, and it is shell-and-tube heat exchanger, board-like changed
Hot device, fat pipe formula heat exchanger or spiral heat exchanger.
Present embodiment is desalinization processing mode, illustrates present embodiment with reference to Fig. 3, present embodiment includes thermal source
Heat exchanger 1, integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 and solid-liquid separation system 3, integral type gravity stream multiple-effect vacuum phase
Becoming heat exchanger 2 includes integral type gravity stream multi-effect evaporator 2-1, condensing heat exchanger 2-2, condensation water tank 2-3 and vacuum plant
2-4；
Seawater/industrial wastewater side outlet phase of the integral type gravity stream multi-effect evaporator 2-1 entrances and thermal source heat exchanger 1
Connection, integral type gravity stream multi-effect evaporator 2-2 outlets access sea, condensing heat exchanger 2-2 water side entrance is connected with sea, cold
Solidifying heat exchanger 2-2 water side outlet is connected with 1 seawater of thermal source heat exchanger/industrial wastewater side entrance, and integral type gravity stream multiple-effect is steamed
Hair device 2-1 every grade of evaporator is corresponded with the vapour side entrance of condensing heat exchanger 2-2 every grade of condenser and connected, condensing heat-exchange
Device 2-2 vapour side general export is connected with condensation water tank 2-3.Other embodiments one, two or three are identical.
Embodiment five：Illustrate present embodiment, integral type gravity stream multiple-effect vacuum phase with reference to Fig. 1, Fig. 2 and Fig. 3
Become the integral type gravity stream multi-effect evaporator 2-1 leaving water temperatures span of heat exchanger 2 as 35 DEG C to 45 DEG C.Other structures and company
It is identical with embodiment one, two, three or four to connect relation.
The integral type gravity stream multi-effect evaporator 2- of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 in present embodiment
1 leaving water temperature is controlled in the range of 35 DEG C to 45 DEG C, the present invention is made full use of the heat of thermal source 4.Meanwhile should
Temperature range is most of larger section of solute solubility in industrial wastewater, after system enters stable circulation operating mode, industrial wastewater
Crystal is separated out when 25 DEG C to 30 DEG C are cooled in cooling tower 3-1, forms the filament saturation solution after filtering, it is molten in solution
Matter can raise solubility with solution temperature and become big, ensure that in follow-up temperature-rise period each condenser in condensing heat exchanger 2-2
Interior nodeless mesh thing separates out；Solution concentration of the solution after supercooling flash concentration process corresponds to saturated solution still less than Current Temperatures
Concentration.So solution is not up to saturation all the time in file vaccum phase conversion heat exchanger in cyclic process, crystal is cooling down
Separated out in tower cooler temperature-fall period, efficiently avoid crystal blocking integral type gravity stream multi-effect evaporator 2-1 and condensation is changed
Hot device 2-2.Other structures and annexation are identical with embodiment one, two.
Embodiment six：Illustrate present embodiment with reference to Fig. 1, Fig. 2 and Fig. 3, separation of solid and liquid in solid-liquid separation system 3
Device 3-3 includes filter, bottom filter tank and filter press.Filter, bottom filter tank and filter press are existing equipment.
The result that the present invention is drawn by sampling test is as follows：
Thermal source 4 selects 80 DEG C of hot industry waste water, and integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 selects six grades of knots
The series of structure, i.e. evaporator is six grades, and integral type gravity stream multi-effect evaporator 2-1 inlet temperatures are 70 DEG C, every grade of temperature drop 5
DEG C, outlet temperature is 40 DEG C, and power is 18MW equipment, handles amount of industrial wastewater 25.7t/h, recovery condensation desalination water
25.7t/h, used heat demand are 9MW, ton water consume electricity 7kw.h.
Operation principle：
Industrial Wastewater Treatment：Integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2 is mainly steamed by integral type gravity stream multiple-effect
Device 2-1 and condensing heat exchanger 2-2 compositions are sent out, in every first-class heat exchanger, the industrial wastewater of forward flow is in integral type gravity stream
The vaporizer side of multiple-effect vacuum phase-change heat-exchanger 2 flashes to obtain pure steam, flows into corresponding condensing heat exchanger vapour side and condensation
The industrial wastewater of heat exchanger water side reverse flow is exchanged heat, and steam is condensed into desalted water, the Industry Waste of condensing heat exchanger water side
Water is heated, the integral type gravity stream multi-effect evaporator 2-1 water sides connection of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger 2
To cooling tower 3-1, cooled, after separation of solid and liquid processing, enter back into the condensing heat exchanger 2-2 of multi-stage vacuum phase-change heat-exchanger 2
Water intake end, by stepped heating.Final system carries out pending waste water the separation of solute and water, realizes the zero-emission of industrial wastewater
Put.
Desalinization：Similar to Industrial Wastewater Treatment principle, in every first-class heat exchanger, the seawater of forward flow is in one
The vaporizer side of formula gravity stream multiple-effect vacuum phase-change heat-exchanger 2 flashes to obtain pure steam, and steam flows into corresponding condensing heat-exchange
The seawater of device vapour side and the side reverse flow of condensing heat exchanger water carries out heat exchange and is condensed into desalted water, and residual seawater is discharged into marine；From
The seawater of marine introducing enters vaporizer side after being heated in condensing heat exchanger water side and flashed, and forms complete cycle.
Claims (6)
1. the multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system, it is characterised in that：It includes heat
Source heat exchanger (1), integral type gravity stream multiple-effect vacuum phase-change heat-exchanger (2), solid-liquid separation system (3), integral type gravity stream are more
Imitating vaccum phase conversion heat exchanger (2) includes integral type gravity stream multi-effect evaporator (2-1), condensing heat exchanger (2-2), condensation water tank
(2-3) and vacuum plant (2-4)；Solid-liquid separation system (3) includes cooling tower (3-1), cooling pond (3-2), separation of solid and liquid dress
Put (3-3) and concentrate cistern (3-4)；
The seawater side outlet or Industry Waste of described integral type gravity stream multi-effect evaporator (2-1) entrance and thermal source heat exchanger (1)
Water side outlet is connected, and integral type gravity stream multi-effect evaporator (2-1) outlet is connected with cooling tower (3-1) entrance, cooling tower
(3-1) outlet is connected with cooling pond (3-2), and cooling pond (3-2) is connected with equipment for separating liquid from solid (3-3) entrance, solid-liquid point
It is connected from device (3-3) entrance with cistern (3-4), cistern (3-4) is connected with condensing heat exchanger (2-2) water side entrance
Connecing, condensing heat exchanger (2-2) water side outlet is connected with the seawater side outlet of thermal source heat exchanger (1) or industrial wastewater side entrance,
Integral type gravity stream multi-effect evaporator (2-1) is at different levels to be connected with corresponding condensing heat exchanger (2-2) vapour side entrance respectively, and condensation is changed
Hot device (2-2) vapour side outlet is connected to condensation water tank (2-3) after collecting, between condensing heat exchanger (2-2) and condensation water tank (2-3)
It is provided with vacuum plant (2-4).
2. integral type gravity stream multistage successive flash vaporization desalinization according to claim 1 and industrial wastewater treatment system,
It is characterized in that：The integral type gravity stream multi-effect evaporator (2-1) of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger (2) uses
Flash distillation mode is longitudinally continuous, its structure is to be divided into multiple independent spaces by multiple throttling arrangements in an evaporator.
3. integral type gravity stream multistage successive flash vaporization desalinization according to claim 1 and industrial wastewater treatment system,
It is characterized in that：The entrance of thermal source heat exchanger (1) is connected with driving heat source (4), and driving heat source (4) is given up from hot industry
Water, integral type gravity stream multiple-effect vacuum phase-change heat-exchanger (2) extract heat as driving heat source (4) from hot industry waste water.
4. integral type gravity stream multistage successive flash vaporization desalinization according to any one of claim 1 to 3 and Industry Waste
Water treatment system, it is characterised in that：The condensing heat exchanger (2-2) of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger (2) uses
Multistage serial arrangement, it is shell-and-tube heat exchanger, plate type heat exchanger, fat pipe formula heat exchanger or spiral heat exchanger.
5. integral type gravity stream multistage successive flash vaporization desalinization according to claim 4 and industrial wastewater treatment system,
It is characterized in that：Integral type gravity stream multi-effect evaporator (2-1) water outlet of integral type gravity stream multiple-effect vacuum phase-change heat-exchanger (2)
Temperature span is 35 DEG C to 45 DEG C.
6. the desalinization of integral type gravity stream multistage successive flash vaporization and Industrial Wastewater Treatment system according to claim 1 or 5
System, it is characterised in that：Equipment for separating liquid from solid (3-3) includes filter, bottom filter tank and filter press in solid-liquid separation system (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807508.6A CN107344790A (en) | 2017-09-08 | 2017-09-08 | The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710807508.6A CN107344790A (en) | 2017-09-08 | 2017-09-08 | The multistage successive flash vaporization desalinization of integral type gravity stream and industrial wastewater treatment system |
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| CN113149112A (en) * | 2021-04-25 | 2021-07-23 | 清华大学 | Method for realizing hydrothermal coproduction by vertical multistage flash evaporation |
| CN113149113A (en) * | 2021-04-25 | 2021-07-23 | 清华大学 | Vertical multistage flash evaporation device for realizing hydrothermal coproduction |
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Application publication date: 20171114 |