CN209367818U - A kind of brine waste sub-prime recovery system - Google Patents
A kind of brine waste sub-prime recovery system Download PDFInfo
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- CN209367818U CN209367818U CN201821800510.7U CN201821800510U CN209367818U CN 209367818 U CN209367818 U CN 209367818U CN 201821800510 U CN201821800510 U CN 201821800510U CN 209367818 U CN209367818 U CN 209367818U
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Abstract
The utility model discloses a kind of brine waste sub-prime recovery systems, including the preprocessor being connected in turn, preconcentrator, freezing and crystallizing device, sodium chloride crystallizing evaporator and carnallite crystallizer, preprocessor is used to remove the impurity in brine waste, the leakage fluid dram of preprocessor is passed through in preconcentrator by pipeline, the leakage fluid dram of preconcentrator is connect by pipeline with freezing and crystallizing device, the leakage fluid dram of freezing and crystallizing device is connect by pipeline with sodium chloride crystallizing evaporator, the leakage fluid dram of sodium chloride crystallizing evaporator is connect by pipeline with carnallite crystallizer, whizzer is also connected in turn on the freezing and crystallizing device, fused salt device, sodium sulphate crystallizing evaporator and sodium sulphate are centrifugated drier, the leakage fluid dram of the sulfate crystal device is connect by pipeline with carnallite crystallizer, sodium chloride is connected on the sodium chloride crystallizing evaporator It is centrifugated drier, is connected with carnallite separator on the carnallite crystallizer.
Description
Technical field
The utility model relates to a kind of brine waste sub-prime recovery systems, belong to waste water near-zero release and resource utilization ring
Protect technical field.
Background technique
Brine waste acquires process mainly from chemical plant and coal, petroleum, natural gas, contains many kinds of substance, packet
Include inorganic salts, oil, organic matter heavy metal and radioactive substance etc..Brine waste the way of production is extensive, and water also increases year by year.It should
The direct outlet of class waste water will lead to the increase of river water quality salinity, bring further serious dirt to soil, surface water, underground water
Dye destroys ecological environment.The increasingly strict environmental protection policy of country forces each production dirty Business Enterprise Adopting New Technology, new process, realizes dirty
Water harnessing and reuse.In recent years, with the proposition of waste water near-zero release theory and the rise of the relevant technologies, brine waste is controlled
Reason has formd a series of effective treatment measures.Brine waste is by pretreatment, film concentration, then arrives and be concentrated by evaporation,
The highly concentrated mother liquor outlet evaporation pond formed continues natural evaporation, final to realize waste liquid near-zero release.That realizes water effectively repeats benefit
With protecting water ecological environment, save water resource, reduce operation cost of enterprises.
Though waste water near-zero release is realized, the solid carnallite that evaporation pond natural evaporation generates, current qualitative difficulty, generally
It is to carry out security landfill processing as dangerous solid waste, the expense handled as hazardous waste is on 2000 ~ 3000 yuan of left sides per ton
The right side, high processing cost increase enterprise's production cost.Furthermore recycling is not also realized to the salinity in brine waste sufficiently
Recycling and utilization.In view of the above-mentioned problems, being badly in need of developing a kind of new technology of brine waste salinity sub-prime recycling low cost, realize solid
Body carnallite resource utilization.While solving dangerous waste disposal difficulties, recycling has the inorganic salts of economic value to sell outside, to reduce by zero
Discharge operating cost.
At present in salinity sub-prime recovery technology, it is in the majority that the separation of salt lake chemical industry sal prunella thermal method is utilized.Technique relative maturity,
The extensive use that many years have been obtained in the chemical industry of salt lake may finally effectively recycle work by technology controlling and process from brine waste
Industry grade sodium sulphate and sodium chloride salt.But due to thermal method salt-making process, evaporation operation will receive impurity, organic matter enrichment effect shadow
It rings, it is generally not high that product salt purity is made.
Utility model content
The saliferous utilized the purpose of this utility model is to provide a kind of pair of brine waste salinity recycling high efficiente callback is useless
Mass distributary recovery system is asked with the technology that the salinity recovery technology energy consumption height for solving the prior art, obtained product salt purity are low
Topic.
The utility model adopts the following technical solution: a kind of brine waste sub-prime recovery system comprising be connected in turn
Preprocessor together, preconcentrator, freezing and crystallizing device, sodium chloride crystallizing evaporator and carnallite crystallizer, preprocessor are used for
The impurity in brine waste is removed, the leakage fluid dram of preprocessor is passed through in preconcentrator by pipeline, the leakage fluid dram of preconcentrator
It is connect by pipeline with freezing and crystallizing device, the leakage fluid dram of freezing and crystallizing device is connect by pipeline with sodium chloride crystallizing evaporator, chlorine
The leakage fluid dram for changing sodium crystallizing evaporator is connect by pipeline with carnallite crystallizer, be also connected in turn on the freezing and crystallizing device from
Centrifugal separator, fused salt device, sodium sulphate crystallizing evaporator and sodium sulphate are centrifugated drier, the drain of the sulfate crystal device
Mouth is connect by pipeline with carnallite crystallizer, and sodium chloride centrifuge separation drier is connected on the sodium chloride crystallizing evaporator,
Carnallite separator is connected on the carnallite crystallizer.
The fixed-end forces device for handling carnallite is connected on the carnallite outlet side of the carnallite whizzer.
Salt dissolver is also connected on the carnallite outlet side of the carnallite whizzer, the heat source that salt dissolver uses is carnallite
The leakage fluid dram of the secondary steam lime set generated in crystallizer evaporation and crystal process, salt dissolver is passed into freezing and crystallizing device by pipeline
In.
Blender is provided in the freezing and crystallizing device.
Guide shell is equipped in the freezing and crystallizing device.
Filter or sedimentation inclined plate are equipped in the preprocessor.
The filter is mechanical filter or membrane filter.
The preconcentrator is one or both of membrane concentrator and heat of evaporation inspissator.
The preconcentrator is heat of evaporation inspissator, heat of evaporation inspissator, sodium chloride crystallizing evaporator, sodium sulphate evaporation knot
Brilliant device, carnallite crystallizer are all made of MVR evaporator.
The sodium chloride crystallizing evaporator, sodium sulphate crystallizing evaporator, the heat exchange of carnallite crystallizer and crystal plane all have
Scale inhibition layer.
The beneficial effects of the utility model are: the brine waste sub-prime recovery system operational process of the utility model are as follows: (1)
Brine waste is pre-processed by preprocessor first, removes organic matter, suspended matter, reduces calcium and magnesium hardness；(2) using pre-
Inspissator carries out pre-concentration processing to pretreated brine waste；(3) the waste water feed liquid after pre-concentration is passed through freezing and crystallizing
Device is centrifuged operation by whizzer after freezing and crystallizing, obtains mirabilite hydrate；(4) it will be centrifugally separating to obtain
Mirabilite hydrate is introduced into fused salt device, and steam heating releases the crystallization water, after forming sodium sulphate saturated solution, passes through sodium sulphate knot
Brilliant device is crystallized, and is dried to obtain anhydrous slufuric acid sodium salt eventually by the centrifuge separation of sodium sulphate whizzer；(5) freezing is tied
The mother liquor rich in sodium chloride of brilliant device leakage fluid dram discharge is passed through sodium chloride crystallizing evaporator, and sodium chloride saturation analysis is reached after concentrated
Point out obtains sodium chloride salt product after being centrifugated drier drying by sodium chloride；(6) sodium chloride crystallizing evaporator is arranged
Mother liquor in analysis the salt mother liquor and sulfate crystal device of the discharge of liquid mouth, which is passed into together in carnallite crystallizer, to be crystallized, after centrifuge separation
Obtain carnallite solid.
The utility model is to carry out sub-prime to the brine waste for mainly including sulfate ion, chlorion and sodium ion
Recovery processing, using remelted, MVR evaporative crystallization and carnallite solids backflow multiple technologies coupling is freezed, final realize contains
Salinity sub-prime recycles purpose in salt waste water.Brine waste is concentrated through film or thermal concentration to obtain closing on the saturation highly concentrated salt of drop out point useless
Water, chilled crystallization obtain mirabilite hydrate after centrifuge separation.Again by heat fusing and thermal crystalline, obtained after centrifuge separation is dry
Anhydrous sodium sulfate.Freezing analysis nitre mother liquor obtains sodium chloride after evaporative crystallization and centrifuge separation are dry.Evaporative crystallization analyses salt mother liquor
It is concentrated by evaporation with sodium sulphate thermal crystallizer mother liquor via carnallite crystallizer, obtains carnallite crystallized product.The utility model utilizes miscellaneous
Salt solids backflow and the remelted technology of freezing, can effectively improve recycling sodium sulphate and chlorine using high efficient heat exchanging, evaporative crystallization technique
Change the quality of sodium salt.Sodium sulphate purity can be promoted to 98% or more from 90%, and sodium chloride purity can be promoted to 99% or more from 95%.
Coupling utilizes efficient MVR evaporative crystallization technique, effectively reduces the energy consumption of entire salinity sub-prime recovery process.
Further, fixed-end forces device can be used for handling the carnallite of a part of outlet, and another part carnallite can be passed through dissolved salt
Device is back to freezing and crystallizing device entrance after adding water to re-form brackish water, realize process cycles process.The comparison of carnallite solids backflow
Analysis salt mother liquor directly flows back, and alleviates foreign ion and organic matter enrichment effect in waste water, is conducive to entire sub-prime crystal system
Stablize long-term operation, the product salt stay in grade of recycling is controllable.
Further, internal stirrers are provided in freezing and crystallizing device, so that crystal grain is in suspended state in magma.Simultaneously
It is provided with guide shell, under blender promotion, feed liquid forms cyclic process, be conducive to be freezed inside and outside guide shell
Crystallization and centrifuge separation operation.
Further, MVR technology is that the secondary steam that evaporation generates is heated pressurization using compressor, after improving enthalpy,
As heat source.MVR technology has the advantages that energy-efficient, effectively reduces the energy consumption of entire salinity sub-prime recovery process,
It is after the secondary steam that evaporation generates is heated pressurization raising enthalpy using compressor, to heat feed liquid as heat-source Cycles, most
It is concentrated into sodium chloride saturation drop out point eventually, is centrifugated while carrying out saturated salt solution washing operation, finally obtain high-purity chloro
Change sodium salt product.
Further, heat exchange and crystal plane all have scale inhibition layer, prevent fouling from heat exchange efficiency being caused to reduce, and guarantee heat exchanger
It can be carried out high efficient heat exchanging.
Detailed description of the invention
Fig. 1 is a kind of system diagram of embodiment of the utility model.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
The system diagram of embodiment of the utility model brine waste sub-prime recovery method is as shown in Figure 1, containing for the present embodiment
Salt waste water sub-prime recovery system includes the preprocessor being connected in turn, preconcentrator, freezing and crystallizing device, sodium chloride evaporation
Crystallizer and carnallite crystallizer, preprocessor are used to remove the impurity in brine waste, and the leakage fluid dram of preprocessor passes through pipeline
It is passed through in preconcentrator, the leakage fluid dram of preconcentrator is connect by pipeline with freezing and crystallizing device, and the leakage fluid dram of freezing and crystallizing device is logical
Piping is connect with sodium chloride crystallizing evaporator, and the leakage fluid dram of sodium chloride crystallizing evaporator is connected by pipeline and carnallite crystallizer
It connects, is also connected with whizzer, fused salt device, sodium sulphate crystallizing evaporator and sodium sulphate centrifugation on the freezing and crystallizing device in turn
The leakage fluid dram of separate dryer, the sulfate crystal device is connect by pipeline with carnallite crystallizer, the sodium chloride evaporation knot
It is connected with sodium chloride centrifuge separation drier on brilliant device, is connected with carnallite separator on the carnallite crystallizer.
The fixed-end forces device for handling carnallite is connected on the carnallite outlet side of the carnallite whizzer.It is described miscellaneous
Salt dissolver is also connected on the carnallite outlet side of salt whizzer, the heat source that salt dissolver uses is carnallite crystallizer evaporative crystallization
The leakage fluid dram of the secondary steam lime set generated in the process, salt dissolver is passed into freezing and crystallizing device by pipeline.
It is provided with blender and guide shell in the freezing and crystallizing device, is provided with internal stirrers in freezing and crystallizing device, makes
It obtains crystal grain in magma and is in suspended state.It is provided with guide shell simultaneously, under blender promotion, feed liquid is two inside and outside guide shell
Side forms cyclic process, is conducive to carry out freezing and crystallizing and centrifuge separation operation.
Filter or sedimentation inclined plate are equipped in the preprocessor, wherein filter is mechanical filter or membrane filter.
The preconcentrator is one or both of membrane concentrator and heat of evaporation inspissator, and the preconcentrator is evaporation thermal concentration
Device, heat of evaporation inspissator, sodium chloride crystallizing evaporator, sodium sulphate crystallizing evaporator, carnallite crystallizer are all made of MVR evaporator.
The sodium chloride crystallizing evaporator, sodium sulphate crystallizing evaporator, the heat exchange of carnallite crystallizer and crystal plane all have scale inhibition layer.Resistance
Dirty layer can prevent fouling from heat exchange efficiency being caused to reduce, and guarantee that heat exchanger can be carried out high efficient heat exchanging.
The operational process of the present embodiment are as follows: (1) brine waste is pre-processed by preprocessor first, removed organic
Object, suspended matter reduce calcium and magnesium hardness；(2) pre-concentration processing is carried out to pretreated brine waste using preconcentrator；(3)
Waste water feed liquid after pre-concentration is passed through freezing and crystallizing device, operation is centrifuged by whizzer after freezing and crystallizing,
Obtain mirabilite hydrate；(4) mirabilite hydrate being centrifugally separating to obtain being introduced into fused salt device, steam heating releases the crystallization water,
It after forming sodium sulphate saturated solution, is crystallized by sulfate crystal device, eventually by the centrifugation point of sodium sulphate whizzer
From being dried to obtain anhydrous slufuric acid sodium salt；(5) mother liquor rich in sodium chloride that freezing and crystallizing device leakage fluid dram is discharged is passed through sodium chloride
Crystallizing evaporator reaches sodium chloride saturation drop out point and obtains chlorine after being centrifugated drier drying by sodium chloride after concentrated
Change sodium salt product；(6) by the mother liquor one in the analysis salt mother liquor and sulfate crystal device of the discharge of sodium chloride crystallizing evaporator leakage fluid dram
It rises to be passed into carnallite crystallizer and crystallize, carnallite solid is obtained after centrifuge separation.(7) the carnallite solid of a part of outlet passes through solid
Useless processor processing, another part carnallite solid, which is passed through after salt dissolver adds water to re-form brackish water, to be back to freezing and crystallizing device and enters
Mouthful, realize process cycles process.Carnallite solids backflow directly flows back to comparative analysis salt mother liquor, alleviates foreign ion in waste water and has
Machine object enrichment effect is conducive to entire sub-prime crystal system and stablizes long-term operation, and the product salt stay in grade of recycling is controllable.
The utility model is to carry out sub-prime to the brine waste for mainly including sulfate ion, chlorion and sodium ion
Recovery processing, using remelted, MVR evaporative crystallization and carnallite solids backflow multiple technologies coupling is freezed, final realize contains
Salinity sub-prime recycles purpose in salt waste water.Brine waste is concentrated through film or thermal concentration to obtain closing on the saturation highly concentrated salt of drop out point useless
Water, chilled crystallization obtain mirabilite hydrate after centrifuge separation.Again by heat fusing and thermal crystalline, obtained after centrifuge separation is dry
Anhydrous sodium sulfate.Freezing analysis nitre mother liquor obtains sodium chloride after evaporative crystallization and centrifuge separation are dry.Evaporative crystallization analyses salt mother liquor
It is concentrated by evaporation with sodium sulphate thermal crystallizer mother liquor via carnallite crystallizer, obtains carnallite crystallized product.The utility model utilizes miscellaneous
Salt solids backflow and the remelted technology of freezing, can effectively improve recycling sodium sulphate and chlorine using high efficient heat exchanging, evaporative crystallization technique
Change the quality of sodium salt.Sodium sulphate purity can be promoted to 98% or more from 90%, and sodium chloride purity can be promoted to 99% or more from 95%.
Coupling utilizes efficient MVR evaporative crystallization technique, effectively reduces the energy consumption of entire salinity sub-prime recovery process.
Salinity sub-prime recovery and processing system provided by the utility model is for brine waste, and TDS content is greater than 5000
Mg/L, salinity are mainly made of sodium chloride and sodium sulphate, separately contain other impurities ion and organic components, and COD content is big
In 1000mg/L, waste water is handled using advanced oxidation processes, such as ozone oxidation, wet oxidation, catalysis oxidation etc., processed waste water
The control of COD content is being less than 100mg/L.Influence heat transfer efficiency to prevent heat exchange equipment surface scale from generating, using nano filtering process or
Two alkali (sodium hydroxide and sodium carbonate) method for dosing medicine removes the calcium and magnesium hardness in waste water, and hardness number control is in 20mg/L hereinafter, heat exchange
And crystal plane uses efficient scale to handle while be all made of efficient heat transfer again.It is gone simultaneously using inclined plate sedimentation, filter plant etc.
Except the suspended matter in waste water, content is controlled in 5mg/L or less.According to influent quality feature, after taking corresponding pretreating process,
Pre-concentration processing is carried out to brine waste, using including the concentration of the films such as disc tube reverse osmosis (dt-ro), electrodialysis and carrying liqs distributor
Efficient scale vertical tube falling film evaporator thermal concentration, so that brine waste pre-concentration is to 10%-15%.After pre-concentration waste water feed liquid into
Enter and freeze remelted system, obtains anhydrous sodium sulfate product salt, purity is up to 98% or more.Specially concentrate solution enters cold
Freeze crystallizer, refrigerant is ethylene glycol, and refrigeration crystallization process temperature is controlled at -5 DEG C or so.Blender is provided in crystallizer,
So that crystal grain is in suspended state, in addition guide shell acts on, feed liquid circulation process is formed, degree of supercooling control is no more than 1 DEG C.Through from
After heart lock out operation, mirabilite hydrate is obtained, is introduced into fused salt device, steam heating releases the crystallization water, forms sodium sulphate saturation
After solution, into sulfate crystal device, final centrifuge separation is dried to obtain anhydrous slufuric acid sodium salt.The utility model freezing is remelted
The impurity for crystallizing obtained thenardite entrainment is few, and quality is excellent, high income.
Mother liquor of the freezing and crystallizing device outlet rich in sodium chloride enters efficient MVR crystallizing evaporator, reaches chlorination after concentrated
Sodium is saturated drop out point, after centrifuge separation drying, obtains sodium chloride salt product.Saturated salt solution washing or recrystallization can be used
Operation further increases sodium chloride salt product purity and reaches 99% or more, improves product salt added value.Analysis salt mother liquor enters miscellaneous
Salt solids backflow system, is not back in system directly.The impurity enricheds effect such as organic matter in mother liquor is avoided, entire sub-prime is brought
Recovery system unstability.It analyses salt mother liquor and enters carnallite crystallizer together with a small amount of sulfate crystal mother liquor, after centrifuge separation
To carnallite solid.A part export is disposed by solid waste, and a part imports in salt dissolver, is dissolved with secondary lime set product water miscellaneous
Salt solid forms brackish water, returns to through reflux line to freezing and crystallizing device entrance.
Pre-concentration evaporator, sodium chloride crystallizing evaporator, sodium sulphate crystallizing evaporator, carnallite crystallizer can be used efficiently
The secondary steam that evaporation generates is heated pressurization using compressor, after improving enthalpy, as heat source by MVR power-saving technology.It follows
Ring is concentrated by evaporation feed liquid, is finally concentrated to salt loading drop out point.The technology efficiently uses secondary steam latent heat, reduces system condensing
Water consumption.For brine waste after the processing of above-mentioned sub-prime recovery process, recycling obtains the higher anhydrous slufuric acid sodium salt of quality and chlorination
Sodium salt realizes waste liquid near-zero release and recycling effective use purpose.Carnallite solids backflow directly flows back to comparative analysis salt mother liquor,
Foreign ion and organic matter enrichment effect in waste water are alleviated, is conducive to entire sub-prime crystal system and stablizes long-term operation, return
The product salt stay in grade of receipts is controllable.
Here is a specific application example:
Certain coal chemical industry brine waste, TDS content about 6000mg/L, wherein SO42-/Cl-Content is than 3 ~ 3.5, sodium chloride and sulphur
The total salt amount 70% ~ 80% of acid sodium-salt Zhan, COD content 2000mg/L ~ 3000mg/L.Brine waste successively passes through ozone-oxidizing device,
Two alkali dosing flocculation sedimentation filter devices, after the pretreating process such as two steps ro, COD content is reduced to 150mg/L ~ 250mg/
L, calcium and magnesium hardness ions content are less than 30mg/L, and suspension content is less than 5mg/L, and TDS content is 25000mg/L ~ 30000mg/
L.Using the efficient vertical tube falling film evaporator of MVR, heat exchange and crystal plane use efficient scale while being all made of efficient heat transfer again
Processing, heat-transfer surface combination metal and nonmetallic efficient heat transfer scale inhibition layer, heat exchanger tube use special type pipe structure type.After pretreatment
Waste water feed liquid be evaporated pre-concentration, concentration reaches 10% ~ 15%.Pre-concentration feed liquid enters freezing and crystallizing device, matches in crystallizer
Have blender, stirred by certain speed so that in magma crystal grain be in suspended state not medium well at growing up.It is equipped in crystallizer
Guide shell forms feed liquid circulation process under blender promotion.Refrigerant selects ethylene glycol, and process temperature controls on -5 DEG C of left sides
The right side, control feed liquid circulation amount make degree of supercooling be no more than 1 DEG C.When mirabilite hydrate is constantly precipitated in crystallizer, magma solid-to-liquid ratio reaches
When to 20% ~ 25%, mirabilite hydrate is isolated by centrifugal separating device.Mirabilite hydrate is introduced to the fused salt device with blender,
Steam heating, discharges the crystallization water, forms sodium sulphate saturated solution.It is re-introduced into sodium sulphate crystallizing evaporator, concentration reaches 30% left side
When right, anhydrous sodium sulfate is salted out, and after being centrifuged drying, obtains anhydrous sodium sulfate product salt, purity can be promoted to 98% very
To higher.
Freezing and crystallizing enters sodium chloride MVR crystallizing evaporator, when being concentrated into 40%, chlorine after arranging the preheated device heating of dense mother liquor
Change sodium and reach saturation drop out point, magma solid-to-liquid ratio reaches 20% ~ 25%, is centrifuged, while after saturated salt solution washing, dry
Obtain sodium chloride salt product.Sodium chloride, sodium sulphate crystallizing evaporator are arranged dense mother liquor and are converged into carnallite crystallizer, concentrated to reach
After being saturated drop out point, it is centrifugally separating to obtain carnallite solid.A part of discharging system is disposed as solid waste, and another part introduces
Into salt dissolver, using the secondary lime set of crystallizing evaporator recycling as solvent, stirring and dissolving retrieves brackish water, is back to
Freezing and crystallizing device entrance completes feed liquid circulation process.It is final to realize the effective sub-prime recycling of salinity in brine waste, reach recycling
Using purpose, waste water near-zero release is realized.
Above-described embodiment is a kind of preferred embodiment of the utility model, in other embodiments, the brine waste
Preprocess method be that advanced oxidation processes or method for dosing medicine or nano filtering process or inclined plate sedimentation handle waste water or filter process waste water；Institute
Stating advanced oxidation processes is one or more of oxygen oxidation, wet oxidation, catalysis oxidation；The method for dosing medicine is addition hydrogen-oxygen
Change one or more of sodium, sodium carbonate, calcium hydroxide, quick lime；Calcium and magnesium hardness ions are greater than 50mg/ in brine waste
L handles waste water using nano filtering process or method for dosing medicine；Suspension content is greater than 50mg/L in brine waste, is handled using inclined plate sedimentation
Waste water or filter process waste water, the filter in the filter process waste water are mechanical filter or membrane filter.At it
In its embodiment, pre-concentration processing is that conventional film is concentrated or evaporates any one in thermal concentration.
Preprocessor employed in the utility model, preconcentrator, freezing and crystallizing device, whizzer, fused salt device, chlorine
Change sodium crystallizing evaporator, sodium chloride is centrifugated drier, sodium sulphate crystallizing evaporator, sodium sulphate are centrifugated drier, miscellaneous
The equipment that the equipment such as salt crystallizer, carnallite whizzer can use the prior art, therefore the utility model omits equipment
Structure chart.The unmentioned part of the utility model is the same as those in the prior art or can use the prior art and realized.
Although the embodiments of the present invention is described in detail above, the utility model is not limited to
The embodiment stated.The scope of the utility model defined by the attached claims includes all equivalent substitutions and variation.
Claims (10)
1. a kind of brine waste sub-prime recovery system, which is characterized in that it includes the preprocessor being connected in turn, pre- dense
Contracting device, freezing and crystallizing device, sodium chloride crystallizing evaporator and carnallite crystallizer, preprocessor are miscellaneous in brine waste for removing
The leakage fluid dram of matter, preprocessor is passed through in preconcentrator by pipeline, and the leakage fluid dram of preconcentrator passes through pipeline and freezing and crystallizing
The leakage fluid dram of device connection, freezing and crystallizing device is connect by pipeline with sodium chloride crystallizing evaporator, the row of sodium chloride crystallizing evaporator
Liquid mouth is connect by pipeline with carnallite crystallizer, is also connected with whizzer, fused salt device, sulphur on the freezing and crystallizing device in turn
Sour sodium crystallizing evaporator and sodium sulphate are centrifugated drier, the leakage fluid dram of the sodium sulphate crystallizing evaporator by pipeline with it is miscellaneous
Salt crystallizer connects, and sodium chloride centrifuge separation drier, the carnallite crystallizer are connected on the sodium chloride crystallizing evaporator
On be connected with carnallite separator.
2. brine waste sub-prime recovery system according to claim 1, it is characterised in that: the carnallite whizzer
The fixed-end forces device for handling carnallite is connected on carnallite outlet side.
3. brine waste sub-prime recovery system according to claim 2, it is characterised in that: the carnallite whizzer
Be also connected with salt dissolver on carnallite outlet side, the heat source that salt dissolver uses for generated in carnallite crystallizer evaporation and crystal process two
The leakage fluid dram of secondary steam condensate, salt dissolver is passed into freezing and crystallizing device by pipeline.
4. brine waste sub-prime recovery system according to claim 1, it is characterised in that: setting in the freezing and crystallizing device
There is blender.
5. brine waste sub-prime recovery system according to claim 1, it is characterised in that: be equipped in the freezing and crystallizing device
Guide shell.
6. brine waste sub-prime recovery system according to claim 1, it is characterised in that: be equipped in the preprocessor
Filter or sedimentation inclined plate.
7. brine waste sub-prime recovery system according to claim 6, it is characterised in that: the filter is mechanical filter
Device or membrane filter.
8. brine waste sub-prime recovery system according to claim 1, it is characterised in that: the preconcentrator is film concentration
One or both of device and heat of evaporation inspissator.
9. brine waste sub-prime recovery system according to claim 8, it is characterised in that: the preconcentrator is heat of evaporation
Inspissator, heat of evaporation inspissator, sodium chloride crystallizing evaporator, sodium sulphate crystallizing evaporator, carnallite crystallizer are all made of MVR evaporation
Device.
10. brine waste sub-prime recovery system according to claim 1, it is characterised in that: the sodium chloride evaporative crystallization
Device, sodium sulphate crystallizing evaporator, the heat exchange of carnallite crystallizer and crystal plane all have scale inhibition layer.
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| CN201821800510.7U CN209367818U (en) | 2018-11-02 | 2018-11-02 | A kind of brine waste sub-prime recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111661888A (en) * | 2020-06-15 | 2020-09-15 | 方诺传热系统(江苏)有限公司 | Falling film type air cooler based on evaporative air cooling technology and wastewater treatment process |
| CN113213684A (en) * | 2021-04-23 | 2021-08-06 | 北京国电富通科技发展有限责任公司 | Salt separation system and method for improving salt recycling rate of coking wastewater |
| CN113830851A (en) * | 2020-06-23 | 2021-12-24 | 中国科学院理化技术研究所 | Method and system for separating salt and nitrate from high-salinity wastewater |
| CN114394706A (en) * | 2021-12-07 | 2022-04-26 | 陕西航天机电环境工程设计院有限责任公司 | Evaporation-freezing coupling high-concentration salt wastewater treatment method and system based on heat pump |
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2018
- 2018-11-02 CN CN201821800510.7U patent/CN209367818U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111661888A (en) * | 2020-06-15 | 2020-09-15 | 方诺传热系统(江苏)有限公司 | Falling film type air cooler based on evaporative air cooling technology and wastewater treatment process |
| CN113830851A (en) * | 2020-06-23 | 2021-12-24 | 中国科学院理化技术研究所 | Method and system for separating salt and nitrate from high-salinity wastewater |
| CN113213684A (en) * | 2021-04-23 | 2021-08-06 | 北京国电富通科技发展有限责任公司 | Salt separation system and method for improving salt recycling rate of coking wastewater |
| CN114394706A (en) * | 2021-12-07 | 2022-04-26 | 陕西航天机电环境工程设计院有限责任公司 | Evaporation-freezing coupling high-concentration salt wastewater treatment method and system based on heat pump |
| CN114394706B (en) * | 2021-12-07 | 2023-01-17 | 陕西航天机电环境工程设计院有限责任公司 | Evaporation-freezing coupling high-concentration salt wastewater treatment method and system based on heat pump |
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