CN109678287A - A kind of recycling and processing device and method of nickelic positive electrode water lotion - Google Patents
A kind of recycling and processing device and method of nickelic positive electrode water lotion Download PDFInfo
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- CN109678287A CN109678287A CN201910044771.3A CN201910044771A CN109678287A CN 109678287 A CN109678287 A CN 109678287A CN 201910044771 A CN201910044771 A CN 201910044771A CN 109678287 A CN109678287 A CN 109678287A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/08—Carbonates; Bicarbonates
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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
- 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
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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
- C02F2001/007—Processes including a sedimentation step
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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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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
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Abstract
The invention discloses the recycling and processing devices and method of a kind of nickelic positive electrode water lotion, wherein, recycling and processing device includes equipment for separating liquid from solid and evaporated crystallization device, the feed end of evaporated crystallization device is connected to the discharge end of equipment for separating liquid from solid, for being evaporated condensing crystallizing to the water lotion after separation of solid and liquid；Evaporated crystallization device includes primary heater and secondary heater, and the feed end of primary heater is connected to the discharge end of equipment for separating liquid from solid；The feed end of secondary heater is connected to the discharge end of primary heater, and a forced circulation pump is installed on the pipeline that secondary heater is connected to primary heater；Crystal separator is connected to the feed end of primary heater, and the discharge end of secondary heater is connected to crystal separator.The recycling and processing device controls crystallization desalting process with can be convenient, and adaptable to the source water of different quality, various concentration, debugging difficulty is small, and crystallization effect is good, and crystalline rate is high.
Description
Technical field
The present invention relates to positive electrode washings processing technical fields, in particular to a kind of nickelic positive electrode water
The recycling and processing device and method of washing lotion.
Background technique
Currently, when the nickelic positive electrode of lithium electricity industry production ternary, for the performance for improving product, one burn it is broken after need
Washing process to be carried out to nickelic positive electrode to reduce the residual lithium in material.And washing later water lotion is to contain carbonic acid
The mixing liquid of lithium, lithium hydroxide, nickelic positive electrode (fine powder passes through what filter cloth was run away) etc., it is main to be tested and analyzed its ingredient
For LiCO3And LiOH, secondly there are also some impurity such as Li, Ni, Co, Mn, Ca, Cu, Fe, K, Mg, Na, S, Zn etc., pH 12
Left and right.
For the above water lotion, environmental requirement at present is unable to direct emission, needs to entrust third party waste water treatment plant mostly
Family is handled, and not only the processing cost is high, but also material in water lotion and lithium do not obtain recycling and reusing.
Patent document CN206751588U discloses a kind of processing system of tertiary cathode material production waste water, mainly includes
Membrane separation device, equipment for separating liquid from solid and evaporated crystallization device, wherein membrane separation device is connect with equipment for separating liquid from solid, solid-liquid
Separator is connect with evaporated crystallization device, and evaporated crystallization device includes sequentially connected heating room, vaporization chamber and crystallizing tank, knot
Brilliant tank is connect with centrifuge.
Although above-mentioned processing system is capable of handling water lotion, recycle most of material therein, but its still have with
Lower major defect: (1) using single heating room, and heating without forced circulation, and stability is poor for entire crystal system,
Crystallization desalination is difficult to control, and especially corresponds to different quality, and the source water of various concentration, debugging is big, and crystallization effect is poor, knot
Crystallographic system system fluctuation of service；(2) steam generated in vaporization chamber directly returns is utilized in vapour compression machine, due to evaporating
A part of solid dust may be generated after indoor separation of solid and liquid, solid dust enters operation in compressor for a long time, will affect
The service life of compressor；(3) since the solid-liquid specific gravity of the crystallization solution come out from crystallization pot bottom is typically small, so that centrifugation
The efficiency of machine is lower, to influence entire production efficiency.
Summary of the invention
The main purpose of the present invention is to provide the recycling and processing device and method of a kind of nickelic positive electrode water lotion, with
At least solve processing system in the prior art crystallization desalination be difficult to control, crystallization effect it is poor, crystal system fluctuation of service
Problem.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of nickelic positive electrode water lotion
Recycling and processing device, the recycling and processing device include: equipment for separating liquid from solid, and equipment for separating liquid from solid is used for nickelic positive electrode water
Solid component in washing lotion is separated with liquid component；Evaporated crystallization device, the feed end and solid-liquid point of evaporated crystallization device
Discharge end connection from device, for being evaporated condensing crystallizing to the water lotion after separation of solid and liquid；The evaporated crystallization device packet
Include: primary heater, the feed end of primary heater are connected to the discharge end of equipment for separating liquid from solid；Secondary heater, second adds
The feed end of hot device is connected to the discharge end of primary heater, installs one on the pipeline that secondary heater is connected to primary heater
Forced circulation pump；Crystal separator, crystal separator are connected to the feed end of primary heater, the discharge end of secondary heater with
Crystal separator connection.
Further, recycling and processing device further includes a Crystallization Separation device, and Crystallization Separation device includes: cyclonic separation
Device, the feed end of cyclone separator are connected to the bottom of crystal separator, the liquid outlet opening and Crystallization Separation of cyclone separator
Device connection；Thickener, the feed end of thickener are connected to the solid outlet of cyclone separator；Centrifuge, the bottom of thickener
It is connected to the feed end of centrifuge；Reservoir, the liquid outlet of thickener and the leakage fluid dram of centrifuge are connected to reservoir, filter
Liquid pool is connected to by pipeline with the discharge end of primary heater, is pacified on the pipeline that reservoir is connected to the discharge end of primary heater
Fill a filtrate pump.
Further, recycling and processing device further includes an aeration tower, the feed end of aeration tower and the steam of crystal separator
Outlet, aeration tower is interior to be equipped with filter screen, and the clean steam outlet of aeration tower is connected to by pipeline with a compressor, aeration tower
Top be equipped with spray equipment, the bottom of aeration tower is connected to by pipeline with spray equipment, the bottom of aeration tower and spray equipment
One gas washingpump is installed, the discharge end of gas washingpump also passes through a pipeline and is connected to the discharge end of primary heater on the pipeline of connection.
Further, the steam (vapor) outlet of compressor is situated between with the heating of primary heater and secondary heater respectively by pipeline
The connection of matter feed inlet, primary heater connect a condensate water pot by pipeline with the heat medium discharge port of secondary heater.
Further, recycling and processing device further includes a preheater, the feed end of preheater and going out for equipment for separating liquid from solid
Expect end connection, the discharge end of preheater is connected to the feed end of primary heater.
Further, condensate water pot is connected to by pipeline with the heat medium feed inlet of preheater, and the heating of preheater is situated between
Matter discharge port connects a water purification machine processed by pipeline.
Further, equipment for separating liquid from solid includes: subsider, and subsider is for sinking to nickelic positive electrode water lotion
Drop；The top of stoste pool, subsider is connected to by pipeline with stoste pool；The bottom of filter press, subsider passes through pipeline and filters pressing
The feed end of machine is connected to, one sedimentation pump of installation on the pipeline that the bottom of subsider is connected to the feed end of filter press, filter press
Leakage fluid dram is connected to by pipeline with stoste pool.
Further, equipment for separating liquid from solid further includes filter, and the feed end of filter is connected to stoste pool, filter
Discharge end is connected to the feed end of preheater, installs a raw liquor pump on the pipeline that the feed end of filter is connected to stoste pool.
Further, primary heater is tube still heater, and secondary heater is baffle heater.
According to another aspect of the present invention, a kind of recovery and treatment method of nickelic positive electrode water lotion is provided, is used
Above-mentioned recycling and processing device is recycled water lotion, which mainly comprises the steps that
By nickelic positive electrode water lotion after equipment for separating liquid from solid is separated by solid-liquid separation, water lotion enters primary heater
Heated, it is heated after water lotion squeezed into secondary heater by forced circulation pump and heated again, heat again
Water lotion afterwards is entered in crystal separator by secondary heater is evaporated crystallization, and the liquid of crystal separator lower part passes through the
One heater, forced circulation pump and crystal separator carry out circulating-heating evaporative crystallization.
It applies the technical scheme of the present invention, by setting primary heater and secondary heater, by equipment for separating liquid from solid
Discharge end is connected to by pipeline with the feed end of primary heater, and the feed end of primary heater passes through pipeline and crystal separator
Connection, the discharge end of primary heater be connected tos by pipeline with secondary heater, the discharge end of secondary heater pass through pipeline and
Crystal separator connection, and forced circulation pump is installed on the pipeline that primary heater is connected to secondary heater, at the recycling
It manages device and uses multiple stage heater, and heated by forced circulation pump forced circulation, compared to the crystallization of existing single heating room
System, operation stability is more preferable, is carried out to crystallization desalting process with can be convenient by forced circulation pump and multiple stage heater
Control, adaptable to the source water of different quality, various concentration, debugging difficulty is small, and crystallization effect is good, and crystalline rate is high.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the recycling and processing device of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of evaporated crystallization device in the recycling and processing device of the embodiment of the present invention.
Wherein, the above drawings include the following reference numerals:
10, equipment for separating liquid from solid；11, subsider；12, stoste pool；13, filter press；14, sedimentation pump；15, filter；16,
Raw liquor pump；20, evaporated crystallization device；21, primary heater；22, secondary heater；23, forced circulation pump；24, Crystallization Separation
Device；30, preheater；40, Crystallization Separation device；41, cyclone separator；42, thickener；43, centrifuge；44, reservoir；45,
Filtrate pump；46, mashing pump；50, aeration tower；51, filter screen；52, compressor；53, spray equipment；54, gas washingpump；60, it condenses
Water pot；70, water purification machine processed；80, condensate pump.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.It should be noted that not rushing
In the case where prominent, the feature in embodiment and embodiment in the present invention be can be combined with each other.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical." first ", " second " used in present patent application specification and claims and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are intended merely to facilitate and corresponding components are distinguished.Equally, " one
It is a " or the similar word such as " one " do not indicate that quantity limits, but indicate that there are at least one.The classes such as " connection " or " connected "
As word be not limited to physics or mechanical connection, but may include electrical connection, either it is direct also
It is indirect."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for being described object changes
After change, then the relative positional relationship also correspondingly changes.
Referring to Fig. 1 and Fig. 2, the recycling and processing device of the nickelic positive electrode water lotion of a kind of embodiment of the present invention, this time
Receiving processing unit mainly includes equipment for separating liquid from solid 10 and evaporated crystallization device 20.Wherein, equipment for separating liquid from solid 10 is for will be high
Solid component in nickel positive electrode water lotion is separated with liquid component；The feed end and solid-liquid point of evaporated crystallization device 20
Discharge end connection from device 10, for being evaporated condensing crystallizing to the water lotion after separation of solid and liquid.The evaporated crystallization device
20 include primary heater 21, secondary heater 22 and crystal separator 24.Wherein, the feed end and solid-liquid of primary heater 21
The discharge end of separator 10 is connected to by pipeline；The feed end of secondary heater 22 and the discharge end of primary heater 21 pass through
Pipeline is connected to, and is equipped with a forced circulation pump 23 on the pipeline that secondary heater 22 is connected to primary heater 21；Crystallization point
It is connected to the feed end of primary heater 21 by pipeline from device 24, the discharge end and crystal separator 24 of secondary heater 22 are logical
Piping connection.
Above-mentioned recycling and processing device, by setting primary heater 21 and secondary heater 22, by equipment for separating liquid from solid
10 discharge end is connected to by pipeline with the feed end of primary heater 21, and the feed end of primary heater 21 passes through pipeline and knot
Brilliant separator 24 is connected to, and the discharge end of primary heater 21 is connected to by pipeline with secondary heater 22, secondary heater 22
Discharge end is connected to by pipeline with crystal separator 24, and is pacified on the pipeline that primary heater 21 is connected to secondary heater 22
Forced circulation pump 23 is filled, which uses multiple stage heater, and heats by 23 forced circulation of forced circulation pump, phase
Than in the crystal system of existing single heating room, operation stability is more preferable, can by forced circulation pump 23 and multiple stage heater
Easily to control crystallization desalting process, adaptable to the source water of different quality, various concentration, debugging difficulty is small,
Crystallization effect is good, and crystalline rate is high.
Optionally, primary heater 21 is preferably tube still heater, and secondary heater 22 is preferably baffle heater.From
Crystal separator 24 enters and contains a certain amount of crystal in the recycle stock in primary heater 21, and the temperature of primary heater 21
Spend it is relatively low, using tube still heater it is possible to prevente effectively from feed blocking primary heater 21；Secondary heater 22 uses
The efficiency of circulating and evaporating crystallization can be improved in baffle heater.
Further, referring to Fig. 1, in the present embodiment, recycling and processing device further includes a Crystallization Separation device 40, should
Crystallization Separation device 40 includes cyclone separator 41, thickener 42, centrifuge 43 and reservoir 44.Wherein, cyclone separator 41
Feed end be connected to the bottom of crystal separator 24 by pipeline, the liquid outlet opening of cyclone separator 41 by pipeline and is tied
Brilliant separator 24 is connected to, and is equipped with one on the pipeline that the feed end of cyclone separator 41 is connected to the bottom of crystal separator 24
Mashing pump 46；The feed end of thickener 42 is connected to by pipeline with the solid outlet of cyclone separator 41；The bottom of thickener 42
Portion is connected to by pipeline with the feed end of centrifuge 43；The liquid outlet of thickener 42 and the leakage fluid dram of centrifuge 43 pass through pipe
Road is connected to reservoir 44, and reservoir 44 is connected to by pipeline with the discharge end of primary heater 21, and reservoir 44 and first adds
A filtrate pump 45 is installed on the pipeline of the discharge end connection of hot device 21.
The crystal slurry obtained after evaporating, concentrating and crystallizing in crystal separator 24 sinks to the bottom of crystal separator 24, slurry
It is squeezed into cyclone separator 41 through mashing pump 46 and slurry is concentrated, the crystal slurry after the concentration of cyclone separator 41 enters
In thickener 42, further sedimentation concentration is carried out to crystal slurry, the slurry after the concentration of thickener 42 enters back into centrifuge 43
In be centrifuged, slurry is carried out dehydrating.Using above-mentioned Crystallization Separation device 40, rotation is first passed through before centrifugal treating
Wind separator 41 and thickener 42 carry out two-step enrichment to slurry, effectively increase centrifugal efficiency.In addition, by cyclone separator 41
Liquid outlet opening be connected to crystal separator 24 by pipeline, the liquid obtained after cyclone separator 41 is concentrated flows into knot again
Circulating and evaporating crystallization is carried out in brilliant separator 24；The liquid that the liquid and centrifuge 43 on 42 top of thickener generate flows into reservoir
In 44, the liquid in reservoir 44, which is incorporated to again in the lower section pipeline of primary heater 21, carries out circulating and evaporating crystallization.So set,
The rate of recovery to material in water lotion is substantially increased, and reduces the discharge of sewage.
Referring to Fig. 1, in the present embodiment, recycling and processing device further includes an aeration tower 50, the charging of the aeration tower 50
End is connected to by pipeline with the steam (vapor) outlet of crystal separator 24, and filter screen 51 is provided in aeration tower 50, aeration tower 50
Clean steam outlet is connected to by pipeline with a compressor 52.Enter meeting in the steam in aeration tower 50 from crystal separator 24
It is mixed into certain solid dust (predominantly lithium salts), it, on the one hand can be right if not handled steam and being directly entered compressor
Compressor damages the service life for influencing compressor, on the other hand will also result in the loss of material.The present embodiment is by setting
It sets aeration tower 50 to handle the steam containing solid dust being discharged in crystal separator 24, except the solid powder in devaporation
Dirt, clean steam, which enters back into, carries out steam regeneration in compressor 52.So set, the use of compressor 52 not only can be improved
Service life, and the rate of recovery of material in water lotion can be improved.
It is additionally provided with spray equipment 53 on the top of aeration tower 50, the bottom of aeration tower 50 passes through pipeline and the spray equipment
53 are connected to, and are equipped with a gas washingpump 54 on the pipeline that the bottom of aeration tower 50 is connected to spray equipment 53.In this way, aeration tower 50
Interior water can collect in the bottom of aeration tower 50, and the water of 50 bottom of aeration tower squeezes into spray equipment 53 to aeration tower through gas washingpump 54
The steam entered in 50 is sprayed.
In the present embodiment, the discharge end of gas washingpump 54 also passes through a root canal road and the discharge end of primary heater 21 connects
It is logical.After the liquid of 50 bottom of aeration tower reaches a certain concentration, by switching the valve on the pipeline for 54 bottom of gas washingpump
Liquid is beaten into the pipeline of 21 lower section of primary heater, then carries out circulating-heating evaporative crystallization.
Steam is made full use of in order to realize, further realize it is energy-saving, referring to Fig. 1, in the present embodiment, compression
The steam (vapor) outlet of machine 52 is connected to the heat medium feed inlet of primary heater 21 and secondary heater 22 respectively by pipeline, the
One heater 21 connects a condensate water pot 60 by pipeline with the heat medium discharge port of secondary heater 22.So set, through
The regenerated steam of overcompression machine 52 enters in the heat exchanger tube of primary heater 21 and secondary heater 22, to 21 He of primary heater
The material recycled in secondary heater 22 is heated, and is taken full advantage of the heat of steam after compressor 52 regenerates, is reduced back
Receive the energy consumption of processing unit.
In the present embodiment, recycling and processing device further includes a preheater 30, and the feed end of the preheater 30 passes through pipe
Road is connected to the discharge end of equipment for separating liquid from solid 10, and the discharge end of preheater 30 passes through the feed end of pipeline and primary heater 21
Connection.Condensate water pot 60 is connected to by pipeline with the heat medium feed inlet of preheater 30, condensate water pot 60 and preheater 30
A condensate pump 80 is installed on the pipeline of heat medium feed inlet connection.Condensed water into condensate water pot 60 still has
Higher heat, by the water in condensate water pot 60 being squeezed into the heat exchanger tube of preheater 30, to the material after separation of solid and liquid into
The preliminary preheating of row, further improves capacity usage ratio, reduces the energy consumption of recycling and processing device.The heat medium of preheater 30
Discharge port connects a water purification machine 70 processed by pipeline, and pure water is made in the water after abundant cooling.Preheater 30 is preferably using column
Tubular preheater, material generates crystallization and blocks preheater 30 when can prevent from using for a long time.
Specifically, in the present embodiment, equipment for separating liquid from solid 10 includes subsider 11, stoste pool 12 and filter press 13.
Wherein, the bottom of subsider 11 is V-shaped, and subsider 11 is for settling nickelic positive electrode water lotion；Subsider 11
Top is connected to by pipeline with stoste pool 12；The bottom of subsider 11 is connected to by pipeline with the feed end of filter press 13, is settled
One sedimentation pump 14 is installed, the leakage fluid dram of filter press 13 is logical on the pipeline that the bottom of slot 11 is connected to the feed end of filter press 13
Piping is connected to stoste pool 12.The nickelic positive electrode water lotion in workshop, which enters in subsider 11, to be settled, in water lotion
Solid material be deposited to the bottom of subsider 11, subsequently into carrying out filters pressing in filter press 13, the water lotion after sedimentation is from heavy
The top of drop slot 11 enters in stoste pool 12, and the liquid that filter press 13 generates, which also enters in stoste pool 12, to be stored.Sedimentation pump
14 preferably use pneumatic diaphragm pump, and the pump housing is non-metallic material, and diaphragm material uses three rubber.
In order to further remove the solid matter in water lotion, referring to Fig. 1, in the present embodiment, equipment for separating liquid from solid 10
It further include filter 15, the feed end of the filter 15 is connected to stoste pool 12, discharge end and the preheater 30 of filter 15
Feed end is connected to, and is equipped with a raw liquor pump 16 on the pipeline that the feed end of filter 15 is connected to stoste pool 12.So set,
Water lotion in stoste pool 12 is further filtered by filter 15, is removed solid matter therein, is avoided solid matter to rear
Pipeline in continuous treatment process causes to block.
Optionally, filter 15 is two be arranged in parallel, and one is filtered processing, and another then as spare.
In this way, production efficiency can be improved.
It should be noted that the pipe design that primary heater 21 and secondary heater 22 pass in and out material avoids tubule as far as possible
Diameter low-angle elbow, avoids putty risk；Because lithium hydroxide and lithium carbonate liquid are alkalinity, there is corrosivity, thus it is all with
Material contact portion material requires to be stainless steel material.It is provided with valve (referring to Fig. 1 and Fig. 2) in each connecting pipe, passes through control
Corresponding valve is made to control the flow direction of material.
The operation principle and using method of the recycling and processing device is as follows:
The nickelic positive electrode water lotion in workshop, which enters in subsider 11, to be settled, and clear liquid flows out above subsider 11
Stoste pool 12 is gone, sediment (high-nickel material) by sedimentation pump 14 into filter press 13, filter into stoste pool 12 by the filtrate of filter press 13
Cake recycling pack returns to workshop and uses；
Stoste in stoste pool 12 is beaten through raw liquor pump 16 to filter 15, stoste is carried out to essence filtering one time again, after filtering
Liquid cross preheater 30 and preheated, the liquid after preheating goes primary heater 21 to carry out primary heating, passes through forced circulation
Pump 23 dozens carry out reheating to secondary heater 22, and the liquid after reheating enters crystal separator 24, in Crystallization Separation
The steam generated in device 24 is up walked into aeration tower 50, and the lithium hydroxide and lithium carbonate of crystallization precipitate down, intermediate liquid
Continue under the action of forced circulation pump 23, what is constantly recycled passes through primary heater 21 and 22 heating evaporation knot of secondary heater
It is brilliant；
The lithium hydroxide and lithium carbonate of precipitating are beaten by mashing pump 46 to cyclone separator 41, in the work of cyclone separator 41
Thickener 42 is fallen into lower solid, liquid goes successively to crystal separator 24 and carries out Crystallization Separation, and material enters in thickener 42
Centrifuge 43 is carried out dehydrating, and dewatered lithium hydroxide and lithium carbonate pack, the filtrate of centrifugation enter reservoir 44, filtrate
The filtrate in pond 44 is returned in 21 lower section pipeline of primary heater by filtrate pump 45 and carries out circulating-heating evaporative crystallization again；
Into the effect of filter screen 51 of the steam (certain lithium salts may be mixed into) in aeration tower 50 of aeration tower 50
Lower clean Vapor Return Compressor 52 carries out steam regeneration by steam filtration, and the liquid of 50 bottom of aeration tower passes through gas washingpump
54 dozens of tops to aeration tower 50 carry out spray effect to steam；
After the liquid of 50 bottom of aeration tower reaches a certain concentration, beaten by switch valve to the lower square tube of primary heater 21
Circulating-heating evaporative crystallization is carried out in road again；
The steam that compressor 52 generates enters primary heater 21 and secondary heater 22 exchanges heat, the steaming for the output that exchanges heat
Vapour condensed water enters condensate water pot 60, and the water in condensate water pot 60 is beaten to preheater 30 by condensate pump 80 and carries out raw material in advance
Heat removes water purification machine 70 processed pure water processed again after condensed water cools down.
In general, it using recycling and processing device and method of the invention, veritably realizes to nickelic positive electrode water
The recycling of high-nickel material, the recycling of lithium salts, condensed water return to pure water mechanism pure water in washing lotion, not only create economic effect well
Benefit, and realize the zero-emission of waste water.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of recycling and processing device of nickelic positive electrode water lotion, the recycling and processing device include:
Equipment for separating liquid from solid (10), the equipment for separating liquid from solid (10) are used for the solid component in nickelic positive electrode water lotion
It is separated with liquid component；
Evaporated crystallization device (20), the feed end of the evaporated crystallization device (20) and the discharging of the equipment for separating liquid from solid (10)
End connection, for being evaporated condensing crystallizing to the water lotion after separation of solid and liquid；
It is characterized in that, the evaporated crystallization device (20) includes:
Primary heater (21), the feed end of the primary heater (21) and the discharge end of the equipment for separating liquid from solid (10) connect
It is logical；
Secondary heater (22), the feed end of the secondary heater (22) and the discharge end of the primary heater (21) connect
It is logical, a forced circulation pump (23) are installed on the pipeline that the secondary heater (22) is connected to the primary heater (21)；
Crystal separator (24), the crystal separator (24) are connected to the feed end of the primary heater (21), and described
The discharge end of two heaters (22) is connected to the crystal separator (24).
2. the recycling and processing device of nickelic positive electrode water lotion according to claim 1, which is characterized in that the recycling
Processing unit further includes a Crystallization Separation device (40), and the Crystallization Separation device (40) includes:
The feed end of cyclone separator (41), the cyclone separator (41) is connected to the bottom of the crystal separator (24),
The liquid outlet opening of the cyclone separator (41) is connected to the crystal separator (24)；
The feed end of thickener (42), the thickener (42) is connected to the solid outlet of the cyclone separator (41)；
The bottom of centrifuge (43), the thickener (42) is connected to the feed end of the centrifuge (43)；
The leakage fluid dram of reservoir (44), the liquid outlet of the thickener (42) and the centrifuge (43) with the reservoir
(44) it is connected to, the reservoir (44) is connected to by pipeline with the discharge end of the primary heater (21), the reservoir
(44) filtrate pump (45) are installed on the pipeline being connected to the discharge end of the primary heater (21).
3. the recycling and processing device of nickelic positive electrode water lotion according to claim 1, which is characterized in that the recycling
Processing unit further includes an aeration tower (50), and the steam of the feed end and the crystal separator (24) of the aeration tower (50) goes out
Mouthful connection, is equipped with filter screen (51) in the aeration tower (50), the clean steam outlet of the aeration tower (50) by pipeline with
The top of one compressor (52) connection, the aeration tower (50) is equipped with spray equipment (53), and the bottom of the aeration tower (50) is logical
Piping is connected to the spray equipment (53), the pipeline that the bottom of the aeration tower (50) is connected to the spray equipment (53)
One gas washingpump of upper installation (54), the discharge end of the gas washingpump (54) also pass through going out for a pipeline and the primary heater (21)
Expect end connection.
4. the recycling and processing device of nickelic positive electrode water lotion according to claim 3, which is characterized in that the compression
The steam (vapor) outlet of machine (52) is situated between with the heating of the primary heater (21) and the secondary heater (22) respectively by pipeline
The heat medium discharge port of the connection of matter feed inlet, the primary heater (21) and the secondary heater (22) is connected by pipeline
Connect a condensate water pot (60).
5. the recycling and processing device of nickelic positive electrode water lotion according to claim 4, which is characterized in that the recycling
Processing unit further includes a preheater (30), the feed end of the preheater (30) and the discharging of the equipment for separating liquid from solid (10)
End connection, the discharge end of the preheater (30) are connected to the feed end of the primary heater (21).
6. the recycling and processing device of nickelic positive electrode water lotion according to claim 5, which is characterized in that the condensation
Water pot (60) is connected to by pipeline with the heat medium feed inlet of the preheater (30), the heat medium of the preheater (30)
Discharge port connects a water purification machine (70) processed by pipeline.
7. the recycling and processing device of nickelic positive electrode water lotion according to claim 5, which is characterized in that the solid-liquid
Separator (10) includes:
Subsider (11), the subsider (11) is for settling nickelic positive electrode water lotion；
The top of stoste pool (12), the subsider (11) is connected to by pipeline with the stoste pool (12)；
The bottom of filter press (13), the subsider (11) is connected to by pipeline with the feed end of the filter press (13), described
One sedimentation pump (14) of installation, the filters pressing on the pipeline that the bottom of subsider (11) is connected to the feed end of the filter press (13)
The leakage fluid dram of machine (13) is connected to by pipeline with the stoste pool (12).
8. the recycling and processing device of nickelic positive electrode water lotion according to claim 7, which is characterized in that the solid-liquid
Separator (10) further includes filter (15), and the feed end of the filter (15) is connected to the stoste pool (12), described
The discharge end of filter (15) is connected to the feed end of the preheater (30), the feed end of the filter (15) and the original
A raw liquor pump (16) are installed on the pipeline of liquid pool (12) connection.
9. the recycling and processing device of nickelic positive electrode water lotion according to claim 1 to 8, feature exist
In the primary heater (21) is tube still heater, and the secondary heater (22) is baffle heater.
10. a kind of recovery and treatment method of nickelic positive electrode water lotion, which is characterized in that using as appointed in claim 1-9
Recycling and processing device described in one is recycled water lotion, and the recovery and treatment method mainly comprises the steps that
By nickelic positive electrode water lotion after equipment for separating liquid from solid (10) is separated by solid-liquid separation, water lotion enters primary heater
(21) heated, it is heated after water lotion squeezed into secondary heater (22) by forced circulation pump (23) and added again
Heat, the water lotion after heating again is entered in crystal separator (24) by secondary heater (22) is evaporated crystallization, crystallization point
Liquid from device (24) lower part carries out circulation by primary heater (21), forced circulation pump (23) and crystal separator (24) and adds
Thermal evaporation crystallization.
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