CN108285187A - The evaporation and crystallization system of high-efficient energy-saving environment friendly and application - Google Patents
The evaporation and crystallization system of high-efficient energy-saving environment friendly and application Download PDFInfo
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- CN108285187A CN108285187A CN201810078271.7A CN201810078271A CN108285187A CN 108285187 A CN108285187 A CN 108285187A CN 201810078271 A CN201810078271 A CN 201810078271A CN 108285187 A CN108285187 A CN 108285187A
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- 238000001704 evaporation Methods 0.000 title claims abstract description 144
- 230000008020 evaporation Effects 0.000 title claims abstract description 129
- 238000002425 crystallisation Methods 0.000 title claims abstract description 42
- 230000008025 crystallization Effects 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 238000009833 condensation Methods 0.000 claims abstract description 28
- 230000005494 condensation Effects 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 20
- 239000002918 waste heat Substances 0.000 claims description 16
- 239000003517 fume Substances 0.000 claims description 7
- 238000009834 vaporization Methods 0.000 claims description 7
- 230000008016 vaporization Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000012163 sequencing technique Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 26
- 239000002699 waste material Substances 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000002351 wastewater Substances 0.000 description 17
- 238000001514 detection method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to the evaporation and crystallization system of high-efficient energy-saving environment friendly and applications.The evaporation and crystallization system of the present invention, including evaporation module (1), condensation module (2), stoste warm-up block (3), air concurrent heating module (4), hot air circulation module (5), stoste loop module (7), gas stirring module (9) and crystallisation/solidifying module (10), wherein hot air circulation module (5) connection condensation module (2) and evaporation module (1) form air circulation loop, gas stirring module (9) connection evaporation module (1).Using the evaporation and crystallization system of the present invention, it is possible to reduce waste liquid exhaust gas waste sludge discharge reduces environmental protection charge, improves evaporation efficiency.
Description
Technical field
The present invention relates to waste water evaporative crystallization field, evaporation and crystallization system and the side of a kind of high-efficient energy-saving environment friendly are provided
Method.
Background technology
Industrial production generate waste water due to containing higher salt content and other pollutants, using routine materialization or
Biochemical treatment is extremely difficult, or even cannot carry out, thus evaporates the main means for becoming and handling high saliferous high pollution waste water at present.
Evaporator is the important device that steam occurs, and in order to improve evaporation efficiency, usually increases cavity temperature to evaporator
And pressure, and one problem of generally existing in the process of running：The heat source that high temperature and pressure need to be provided promotes temperature to evaporator, needs
Consume a large amount of live steam or electric energy.In stoste evaporates operational process, thermal energy recycles that degree is low, the heat of loss
It can be more.In addition, high slat-containing wastewater is very high to the material requirement of evaporator, corrosion-resistant, high pressure resistant, high temperature resistant is needed.Therefore, one
As be all made of the expensive materials such as dual phase steel, titanium, but service life is still shorter.
Currently, the evaporator that market uses is mostly mechanical compression steaming process (MVR) and multi-effect evaporator, construction is adopted
It is exchanged heat with tubulation, high temperature and pressure and corrosive wastewater frequently result in stifled tubulation dirt, fouling, burn into booster, and maintenance and repair is costly
High, regular needs halt production maintenance maintenance, influences to produce.
Peaks He Wei et al. (CN107019925A) disclose a kind of enclosed solution circulation zero-discharging evaporation concentration system.It is public
The system opened includes solution pump, moisture eliminator, condenser, humidifier, circulating pump, crystallizing evaporator, stirring axe, centrifuge, throttling
Valve, air blower, compressor, air-introduced machine etc..System carries the different feature of moisture ability using air themperature difference, by sky
Gas humidifies dehumidification, realizes and is concentrated by evaporation under low-temperature atmosphere-pressure；It is recycled using low boiling working fluid and realizes that heat is shifted from low temperature to high temperature,
It only needs to provide without the crystallisation by cooling that concentrated solution can be realized using external low-temperature receiver without using external heat source heated solution
A small amount of electric energy can guarantee system continuous work.The thermal energy of system heating waste liquid comes from the production of compressor compresses low boiling working fluid
Heat, that is, thermal energy is converted electrical energy into, it needs to consume a large amount of electric energy.In addition, air of the system for evaporation is cold in progress
After moisture is precipitated in solidifying dehumidification, environment is discharged under the action of air-introduced machine suction.It is a large amount of poisonous and harmful due to being usually contained in waste liquid
Substance, toxic and harmful gas can be discharged with air when evaporation, influence environment, cause new environmental pollution, and endanger bigger.
Invention content
Technical problem present in currently available technology is, for using the vaporising device of tubulation heat exchange at present, not only can
Fouling occurs, the problems such as burn into blocks, booster, and disengagement area is exactly the sum of each tubulation surface area, disengagement area compared with
Small, evaporation efficiency is low.In addition, current vapo(u)rization system power consumption is high, when evaporative crystallization, constantly discharges poisonous and harmful gas outward
Body causes new environmental pollution.
In order to solve the above technical problems, proposing new wastewater treatment evaporation and crystallization system, evaporator uses the present inventor
Cavity body structure, avoid conventional evaporation equipment tubulation exchange heat incident fouling, burn into block, booster the problems such as；And use heat
Wind and solution are in direct contact the mode of evaporation, increase evaporation surface；The wind speed of liquid surface is improved, higher evaporation speed is obtained
Degree；Evaporation chamber pressure is reduced, evaporation efficiency is substantially increased.Air is recycled using totally-enclosed in vapo(u)rization system simultaneously, is avoided
Generate the new exhaust emission for being likely more sternness.
The toxic and harmful gas outwardly unordered discharge that the present invention generates in order to avoid evaporation process, takes several arrange
It applies：
1. reducing to the greatest extent from ambient inlet air, thus using air circulation system, greatly reduces and inhaled from the external world
The air capacity entered, to greatly reduce gas emissions；
2. in order to make system run under vacuum, a certain amount of gas is also suitably periodically discharged, in addition with evaporation
Cycle carries out, and can gather more and more fixed gases and toxic harmful exhaust gas in air, thus must periodically discharge, and the present invention matches
Special Waste gas outlet has been set, exhaust gas is on the one hand made to become discharging in a organized way from uncontrollable discharge, on the other hand, has been arranged in a organized way
The exhaust gas put reaches waste gas emission standard after the emission-control equipment processing that our company configures and is discharged into air, to real
The purpose of existing zero-emission and environmental protection.
Specifically, the present invention proposes following technical solution：
1. the present invention provides a kind of evaporation and crystallization system, including evaporation module (1), condensation module (2), the pre- hot-die of stoste
Block (3), air concurrent heating module (4), hot air circulation module (5), stoste loop module (7), gas stirring module (9) and crystallization/
Curing module (10), wherein hot air circulation module (5) connect condensation module (2) and evaporation module (1) forms air circulation loop,
Gas stirring module (9) connection evaporation module (1).
2. system according to technical solution 1, wherein the evaporation module (1) includes vaporization chamber, and the vaporization chamber is
Cavity body structure, it is preferred that stoste spray equipment is set at the top of the vaporization chamber.
3. the system according to technical solution 1 or 2, wherein the steam (vapor) outlet setting drop of the evaporation module (1) is caught
Catch device (15).
4. according to technical solution 1-3 any one of them systems, wherein the condensation module (2) is located at evaporation module (1)
Lower section.
5. according to technical solution 1-4 any one of them systems, wherein the stoste warm-up block (3) is using multistage pre-
Hot device is connected in series with, it is preferred that the stoste warm-up block (3) connect to form first order preheating with condensation module (2), described
Stoste warm-up block (3) connect shape with air concurrent heating module (4) and is preheated at the second level；It is furthermore preferred that in first order preheating and the
Setting third, fourth stage preheating after two level preheating.
6. according to technical solution 1-5 any one of them systems, wherein the evaporation module (1) and stoste preheating
The heat source of module (3) and the air concurrent heating module (4) comes from waste heat of plant, fume afterheat, solar energy and/or ground source heat；
Preferably, the system comprises stoste concurrent heating module (12), the heat source of the more preferably described stoste concurrent heating module (12) comes
From in waste heat of plant, fume afterheat, solar energy and/or ground source heat.
7. according to technical solution 1-6 any one of them systems, wherein the stoste loop module (7) connects evaporation mold
The stoste entrance and stoste outlet that block (1), preferably stoste loop module (7) connection evaporation module (1) are arranged, it is further preferably former
The stoste entrance of the stoste outlet and top setting of liquid loop module (7) connection evaporation module (1) bottom setting.
8. according to according to technical solution 1-7 any one of them systems, wherein the gas stirring module (9) includes heating
Device, it is preferred that the heat source of heating device comes from waste heat of plant, fume afterheat, solar energy and/or ground source heat.
9. according to technical solution 1-8 any one of them systems, wherein including exhaust-gas treatment module (8), it is preferred that
Automatic exhaust valve (16) connects the exhaust-gas treatment module (8) and the evaporation module (1).
10. according to technical solution 1-9 any one of them systems, wherein including program controling module.
11. according to technical solution 1-10 any one of them systems, wherein exterior pipeline wraps up insulating layer.
12. on the other hand, the present invention provides application technology scheme 1-11 any one of them systems to be evaporated crystallization
Method, include the following steps：
1) stoste carries out being preheating to required temperature by stoste warm-up block (3)；It, can root if temperature reaches required temperature
It selects to stop the step according to actual condition.
2) reach stoste evaporation in evaporation module (1) of required temperature；
3) saturated vapor that evaporation is formed enters condensation module (2) condensation；
4) condensed gas is heated through air concurrent heating module (4)；With
5) concentrated solution formed in evaporation module (1) enters crystallisation/solidifying in crystallisation/solidifying module (10)；
Wherein, in step 1)~5) arbitrary steps before or after or arbitrary steps among further include following steps：
6) gas stirring stoste is generated in evaporation module (1) bottom by gas stirring module (9)；With 7) followed by hot wind
Gas circulation in evaporation system is imported evaporation module (1) by ring moulds block (5)；
The sequencing of appeal step 6) and step 7) is simultaneously not fixed, and can be adjusted according to actual condition.
13. according to the method described in technical solution 12, wherein include the following steps：Stoste loop module (7) is by evaporation mold
The solution of block (1) bottom is sent to evaporation module (1) top, and stoste enters evaporation module (1) and falls.
14. the method according to technical solution 12 or 13, wherein hot air circulation module (5) generate wind speed be 8~
10km/h。
15. according to technical solution 12-14 any one of them methods, wherein the evaporating pressure in evaporation module (1) is
0.08~0.1MPa, evaporating temperature are 55~80 DEG C, and preferably evaporating pressure is 80~90KPa, and evaporating temperature is 60~73
℃。
16. according to technical solution 12-15 any one of them methods, wherein be discharged into exhaust gas module (8) including exhaust gas and carry out
Exhaust-gas treatment sends out step.
Beneficial effects of the present invention include：
Energy-efficient waste liquid evaporation and crystallization system and method disclosed in this invention reduce waste liquid exhaust gas waste sludge discharge,
Reduce environmental protection charge；The evaporation and crystallization system of the present invention can improve evaporation efficiency, and evaporation and crystallization system of the invention is not according to
Same waste water quality recycles available resources by necessary technological means, increases income to supplement operating cost, in fact
Now reduce the purpose of operating cost.
Below in conjunction with the accompanying drawings with each specific implementation mode, the present invention and its advantageous effects are described in detail,
Wherein：
Description of the drawings
Fig. 1 is high-efficient energy-saving environment friendly evaporation and crystallization system flow diagram of the present invention, and stoste input, condensation are illustrated in figure
The discharge of water and solidfied material.In figure：1- evaporates module；2- condensation modules；3- stostes warm-up block (connection heat source)；4- air is mended
Thermal modules；5- hot air circulation modules；6- condensation water collection modules；7- stoste loop modules；8- exhaust-gas treatment modules；9- gases stir
Dynamic model block (connection heat source)；The crystallisation/solidifying modules of 10- (connection heat source)；11- solidfied material collectors；12- stoste concurrent heating modules
(connection heat source)；13- concurrent heating circulating pumps；14- heat transfer canals；15- droplet captures；16- automatic exhaust valves.
Fig. 2 is the crystal photo that the embodiment of the present invention 1 obtains.
Fig. 3 is the solidfied material photo that the embodiment of the present invention 2 obtains.
Specific implementation mode
Detailed description below is used to illustrate the low-temp low-pressure evaporation and crystallization system that this is energy-efficient, but does not limit this height
The range of energy-efficient low-temp low-pressure evaporation and crystallization system is imitated, it is vertical, horizontal to can be used.
Currently preferred energy-efficient waste water evaporation and crystallization system, including evaporation module, stoste warm-up block, heat are followed
Ring moulds block, stoste loop module, recycle heat utilize system, condensation module, Gas Stirring module and crystallization module and control system
System.Module is evaporated with other device piping connections, and pipeline is not connected to or seldom connects between other devices.Evaporation and crystallization system
It being run using low temperature, low pressure mode, evaporation module uses cavity body structure, the fouling of conventional evaporation equipment, burn into is avoided to block,
The problems such as booster；Cavity can be used common metal material or non-metallic material, true by any special measures construction inside evaporation cavity
Empty set is united, and is realized low-temp low-pressure evaporation, is greatly improved evaporation efficiency.Stoste warm-up block is using multistage preheating method, preheater
The waste heat from condensed water can be used in heat source, is made full use of to the waste heat of condensed water, it is possible to use low temperature exhaust heat, afterheat, waste heat,
Even solar energy and ground source heat amount promotes stoste temperature, saves the energy, reduces heat-energy losses, it is preferred that the pre- hot charging of stoste
It sets and mode, residual temperature of the first order preheater heat source from condensed water, to the residual temperature of condensed water is connected in series with using multistage preheater
It makes full use of so that energy saving, stoste temperature is made to be promoted；Second level preheater heat source comes from one branch of vaporising device heat cycles,
Continue to improve stoste temperature；Three-level, level Four can be set according to actual needs down to more preheaters, every grade of preheater can root
Waste heat of plant, afterheat and solar energy or ground source heat are used according to engineering is practical, low-temperature heat source is made full use of, saves the energy, subtract
Few thermal pollution discharge；Low temperature exhaust heat, afterheat, waste heat, solar energy, Di Yuan can be used by special designing in thermal cycle module, concurrent heating
Heat pump etc. is used as heat source；Stoste loop module simulates tropical rain forest environment, increases evaporation surface, greatly improves evaporation efficiency；
Steam circulation module, using sealing and circulating, steam circulation becomes the saturated vapor for the formation that evaporation generates after condensation
Evaporator section is returned to for unsaturated steam, sealing and circulating and after heating again, is on the one hand prevented in waste water evaporation process, it may production
Raw toxic and harmful gas uncontrollable discharge reduces the pollution of exhaust gas, waste heat to environment, reduces atmosphere pollution；On the other hand logical
Waste heat can be made full use of by crossing sealing and circulating, greatly reduce heat-energy losses, reduce energy consumption；Gas stirring module, using special knot
On the one hand structure increases evaporation surface, improve evaporation efficiency；On the other hand cavity dope fouling, vacuum environment of being more convenient for are reduced
Construction.
All modules of another preferred system of the present invention and exterior line, wrap up insulating layer, reduce heat losses；
Another preferred whole system of the present invention uses automatic control, each module not only can independent operating, but also rationally
An organic whole is constituted, evaporation and crystallization system is configured with various detection control elements, can detect real time data, and by can
PLC program module, the operation of real-time control system interior pump, valve, wind turbine are programmed, and can be adjusted all kinds of according to real-time detector data
The operation of power component, to be optimal design effect.Using automatic operating, select and be arranged various detection instrument,
Automatic controls, realization can be unattended, reduce operation cost of labor.
Another preferred evaporation and crystallization system of the present invention is as shown in Figure 1, stoste is carried out by stoste warm-up block (3) first
Preheating, preheated stoste is by stoste loop module (7) from the stoste outflow spray at the top of evaporation module (1) to evaporation module
(1) it is tropical " rainforest " that class is formed in chamber；Swabbing action of the air in hot air circulating pipe in hot air circulation blower (5) at this time
It is lower to evaporate module (1) chambers through air concurrent heating module (4) stepped heating to 55~80 DEG C of entrance, flow through liquid surface in evaporation cavity
And pass through " rainforest " so that all evaporations are all surface evaporations, increase evaporation surface, evaporation surface is common atimodometer
The decades of times of area.The wind speed that hot air circulation module (5) can pass air through " rainforest " is more than that 8km/h (works as liquid it has been confirmed by experiments that
When the wind speed in body surface face reaches 8km/h, you can obtain higher evaporation rate.Therefore this equipment makes liquid by technical measures
The wind speed on surface reaches 8km/h or more), while subnormal ambient (pressure is 0.08~0.09MPa), drop are generated in evaporation cavity room
Low evaporation chamber pressure constructs tiny structure or vacuum environment, substantially increases evaporation efficiency, and can obtain at a lower temperature
Obtain higher evaporation efficiency.Fluid temperature is higher, and evaporation rate is faster.But higher fluid temperature, need bigger thermal energy
Supply.This equipment is verified by stringent calculate with numerous experiments, it is determined that the evaporating temperature (evaporating temperature of economical rationality the most
It is 55~80 DEG C), and the real-time adjusting program of complete set is devised, evaporation temperature can be adjusted in real time according to operating status
Degree.Hot wind carries a large amount of water vapour outflow evaporation mold blocks (1), and droplet capture (15), which intercepts water droplet therein, enters evaporation mold
Block (1) chamber.Saturated steam is cooled down by hot air circulation module (5) into condensation module (2) step by step, the water vapour in air
Pure water is gradually condensed into, duct bottom is dropped to and gradually converges into condensation water collection module (6), passes through condensation water collection
Gas and water separator in module (6), condensed water enter condensate collector discharge, can recycle；Condensation module (2) can
To be located at the arbitrary orientation of evaporation module (1), preferably condensation module (2) is located at the lower section of evaporation module (1), evaporation module (1)
In derived steam be downwardly into condensation module (1) in the duct and condensed, condensed gas loops back up evaporation
Module (1), and condensed water is then assembled in condensation module (1) and avoids returning to evaporation module (1) with gas；Gas then continues
Air concurrent heating module (4) stepped heating is flowed in closed pipeline, is then again introduced into evaporation module (1) such Zhou Erfu
The cycle of beginning；When containing certain toxic and harmful gas in recyclegas, detected according to the on-line instrument instrument of system setting
Data open the automatic exhaust valve (16) at the top of evaporation module (1), and exhaust gas, which is discharged into exhaust-gas treatment module (8), carries out exhaust gas
Processing is discharged into air until reaching national waste gas emission standard.Moisture content in stoste enters in circulation air, at a temperature of stoste
Drop, ion component concentration increases, the stoste gradually concentrated bottom by stoste concurrent heating module (12) by concurrent heating circulating pump not
Disconnected cycle additional heat, improves the temperature of waste liquid, at the same gas stirring module (9) air is heated after input evaporation under stress
Module (1) bottom, preferably gas are sprayed towards evaporator wall surface, are stirred waste liquid, so that waste liquid is improved temperature rapidly, simultaneously
Liquid is unlikely to deposit under gas stirring effect, so that liquid is always flowing, in another aspect bubble carrying of liquids
Liquid surface is risen to, evaporation surface is increased, another further aspect bubble plays souring to concentration chamber wall, prevents wall in the cavity
Fouling is serious.The gas that gas stirring module (9) generates is usually air, to reduce cost, but can also be with other other, example
Such as oxygen, nitrogen.Gas-liquid ratio should have control, and gas-liquid ratio (volume ratio) is preferably 1:1~1:2, it is too small to be not achieved
Above-mentioned purpose, it is excessive, cavity negative pressure can be caused to be difficult to be formed.Gas stirring module (9) and stoste concurrent heating module (12) are by addition
Factory's waste heat, waste heat, afterheat or the live steam heat exchange module of configuration are heated, and heat source does not use electric power as far as possible, are used
Electric equipment is limited to convey the pump class of liquid as far as possible and conveys wind turbine and the instrument valve electricity consumption of gas, and electric load is dropped
It is extremely minimum；When reaching setting value (by built-in online instrument measurement) as waste liquid intermediate ion concentration is higher and higher, discharge is opened
Valve is discharged into crystallisation/solidifying module (10), by evaporating and crystallizing as far as possible, reduces and does not even discharge waste liquid, pass through crystallization
Desiccation measure living, reduces solid slag discharge capacity to greatest extent, substantially close to zero-emission, reduces expenses of environmental protection branch caused by being arranged outside enterprise
Go out.Some substances such as sodium sulphate etc. will crystallize precipitation, and be valuable industrial raw materials, can be used for resource reclaim profit
With；Some substances will not crystallize, and can form drying solid (different matter water-containing rates is different), according to national solid waste after collection
Standard carries out processing or reuse.The heat sources such as fume waste heat, stoste preheating may be used in the heat source that crystallisation/solidifying module (10) needs
Heat source can use underground heat, solar energy, factory's preheating, afterheat etc..
Embodiment 1
As shown in Figure 1, stoste is preheated by stoste warm-up block (3) first, preheated stoste is followed by stoste
Ring moulds block (7) is sprayed from the stoste outflow at the top of evaporation module (1) into evaporation module (1) chamber, at this time hot air circulating pipe
In air under the swabbing action of hot air circulation blower (5) through air concurrent heating module (4) stepped heating to 80 DEG C enter evaporation
Module (1) chamber, hot wind liquid surface out of evaporation cavity pass through the hot-blast outlet to evaporation module (1), wind speed 8km/h to steam
Hair cavity indoor pressure is 0.08~0.09MPa.Droplet capture (15), which intercepts the water droplet at hot-blast outlet, enters evaporation module
(1) chamber, saturated steam are cooled down by hot air circulation module (5) into condensation module (2) step by step, the water vapour in air by
Step condenses into pure water, drops to duct bottom and gradually converges into condensation water collection module (6)；Gas then continues closed
Pipeline in flow to air concurrent heating module (4) stepped heating, be then again introduced into evaporation module (1) so following in cycles
Ring；When containing certain toxic and harmful gas in recyclegas, system automatically opens the automatic exhaust at the top of evaporation module (1)
Exhaust gas is discharged into exhaust-gas treatment module (8) and carries out exhaust-gas treatment, until reaching national waste gas emission standard, is discharged by valve (16)
Air.It evaporates remaining stoste and additional heat is constantly recycled by concurrent heating circulating pump by stoste concurrent heating module (12) in bottom,
Improve waste liquid temperature, while gas stirring module (9) air is heated after input evaporation module (1) bottom, gas towards steam
It sends out tank skin face to spray, stirs waste liquid.Vent valves are opened, residual liquid is discharged into crystallisation/solidifying module in vaporization chamber after evaporation
(10)。
Total dissolved solid (TDS) passes through Shanghai precision scientific instrument in the analysis detection in compliance test result embodiment below
The visible spectrophotometer 7230G that Co., Ltd produces is detected, pH using pH meter detection, below detection in subordinate list pass through
PONY composes Buddhist nun and tests group's offer testing result, analyzes the method detected as in the attached table, remaining detection project is by normal
Rule method is detected.
Subordinate list：Detection project method instrument list
Compliance test result embodiment 1
Wastewater sample：Soap stock waste component content：Refer to table 1
1 soap stock waste component content table of table
| Project (mg/L) | Soap stock waste water |
| PH (dimensionless) | 7.21 |
| Vegetable and animals oils | 156 |
| COD | 1.19×105 |
| Ammonia nitrogen | 236 |
| Total nitrogen | 1.34×103 |
| Calcium | 42.4 |
| Magnesium | 343 |
| Potassium | 3.35×103 |
| Sodium | 1.51×104 |
| Sulfate is (with SO4 2Meter) | 1.99×103 |
| Chloride (in terms of Cl) | 269 |
| Total organic carbon | 3.98×104 |
| Soluble solid | 5.89×104 |
| Total salt quantity | 7.32×103 |
| Phosphate (in terms of P) | 8.27×103 |
1000kg soap stock waste water is evaporated crystallization, wherein evaporating pressure is 90KPa；Evaporating temperature is 70 DEG C；Hot wind
The gas velocity that loop module generates is 8Km/h.Through evaporative crystallization operation for 24 hours, 900L condensed waters and evaporation concentrated solution are generated
About 100L, through further crystallizing, crystal (See Figure 2) about 1990g.
For condensed water through composing Buddhist nun's test in laboratory, data are as shown in table 2：
2 condensed water test result of table
| Detection project | Testing result |
| Suspended matter, mg/L | 8 |
| Five-day BOD (BOD5)/biochemical oxygen demand (BOD), mg/L | 868 |
| COD (CODcr), mg/L | 3.28×103 |
| Ammonia nitrogen (in terms of N), mg/L | ＜ 0.05 |
| Total nitrogen (in terms of N), mg/L | 0.39 |
| Total phosphorus (in terms of P), mg/L | 0.27 |
| Vegetable and animals oils/animals and plants oils, mg/L | 58.2 |
| Sulfate (SO4 2-), mg/L | 7.28 |
| Chloride (Cl-) | 1.43 |
The removal rate of various composition in the waste water by evaporative crystallization can be calculated by above-mentioned data, as shown in table 3：
Ingredient removal rate before and after 3 wastewater treatment of table
By upper table as can be seen that each ingredient removal rate is all very high after wastewater treatment, many of ingredient removal rate is more than
99%.
Compliance test result embodiment 2
Wastewater sample：Nuclear industry uranium-containing waste water
100kg nuclear industry uranium-containing waste waters are evaporated solidification, wherein evaporating pressure is 90KPa；Evaporating temperature is 70 DEG C；
The gas velocity 8Km/h that hot air circulation module generates；Through 105 minutes, evaporation curable operation generated 94.5L condensed waters and residue
Concentrate.Concentrate is imported into crystallisation/solidifying module (10), solidfied material is obtained, as shown in figure 3, weighing to solidfied material, about
For 1500g.
After testing, the ingredient before and after wastewater treatment (this experiment has only carried out TDS detections to water sample) and removal rate such as 4 institute of table
Show：
TDS removal rates before and after 4 wastewater treatment of table
| Parameter | Practical removal rate | Before processing (ppm) | After processing (ppm) |
| TDS | 99.94% | 17707 | 10.76 |
Evaporation and crystallization system through the invention is evaporated solidification, and the salinity in waste water is all precipitated and is done substantially
Change, TDS removal rates have been more than 99.9% in waste water.
Claims (16)
1. a kind of evaporation and crystallization system, including evaporation module (1), condensation module (2), stoste warm-up block (3), air concurrent heating mould
Block (4), hot air circulation module (5), stoste loop module (7), gas stirring module (9) and crystallisation/solidifying module (10), wherein
Hot air circulation module (5) connects condensation module (2) and evaporation module (1) forms air circulation loop, and gas stirring module (9) is even
Connect evaporation module (1).
2. system according to claim 1, wherein the evaporation module (1) includes vaporization chamber, and the vaporization chamber is cavity
Structure, it is preferred that stoste spray equipment is arranged in the vaporization chamber.
3. system according to claim 1 or 2, wherein droplet capture is arranged in the steam (vapor) outlet of the evaporation module (1)
(15)。
4. according to claim 1-3 any one of them systems, wherein the condensation module (2) is located under evaporation module (1)
Side.
5. according to claim 1-4 any one of them systems, wherein the stoste warm-up block (3) is using multistage preheater
It is connected in series with, it is preferred that the stoste warm-up block (3) connect to form first order preheating, the stoste with condensation module (2)
Warm-up block (3) connect shape with air concurrent heating module (4) and is preheated at the second level；It is furthermore preferred that in first order preheating and the second level
Third, fourth stage preheating are set after preheating.
6. according to claim 1-5 any one of them systems, wherein the evaporation module (1) and the stoste warm-up block
(3) and the heat source of the air concurrent heating module (4) comes from waste heat of plant, fume afterheat, solar energy and/or ground source heat；It is preferred that
, the system comprises stoste concurrent heating module (12), the heat source of the more preferably described stoste concurrent heating module (12) comes from
Waste heat of plant, fume afterheat, solar energy and/or ground source heat.
7. according to claim 1-6 any one of them systems, wherein stoste loop module (7) the connection evaporation module
(1)。
8. according to according to claim 1-7 any one of them systems, wherein the gas stirring module (9) includes heating device,
Preferably, the heat source of heating device comes from waste heat of plant, fume afterheat, solar energy and/or ground source heat.
9. according to claim 1-8 any one of them systems, wherein including exhaust-gas treatment module (8), it is preferred that pass through
Automatic exhaust valve (16) connects the exhaust-gas treatment module (8) and the evaporation module (1).
10. according to claim 1-9 any one of them systems, wherein including program controling module.
11. according to claim 1-10 any one of them systems, wherein exterior pipeline wraps up insulating layer.
12. the method for being evaporated crystallization using claim 1-11 any one of them systems, includes the following steps：
1) stoste carries out being preheating to required temperature by stoste warm-up block (3)；
2) reach stoste evaporation in evaporation module (1) of required temperature；
3) saturated vapor that evaporation is formed enters condensation module (2) condensation；
4) condensed gas is heated through air concurrent heating module (4)；With
5) concentrated solution formed in evaporation module (1) enters crystallisation/solidifying in crystallisation/solidifying module (10)；
Wherein, in step 1)~5) arbitrary steps before or after or arbitrary steps among further include following steps：
6) gas stirring stoste is generated in evaporation module (1) bottom by gas stirring module (9)；With
7) gas circulation in evaporation system is imported by evaporation module (1) by hot air circulation module (5)；
The sequencing of appeal step 6) and step 7) is simultaneously not fixed, and can be adjusted according to actual condition.
13. according to the method for claim 12, wherein include the following steps：Stoste loop module (7) will evaporate module
(1) solution of bottom is sent to evaporation module (1) top, and stoste enters evaporation module (1) and falls.
14. method according to claim 12 or 13, wherein the wind speed that hot air circulation module (5) generates is 8~10km/
h。
15. according to claim 12-14 any one of them methods, wherein the evaporating pressure in evaporation module (1) is 0.08~
0.1MPa, evaporating temperature are 55~80 DEG C, and preferably evaporating pressure is 80~90KPa, and evaporating temperature is 60~73 DEG C.
16. according to claim 12-15 any one of them methods, wherein be discharged into exhaust gas module (8) including exhaust gas and carry out exhaust gas
The step of processing.
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