CN207512240U - Concentrate equipment of the high salinity containing mixture solution - Google Patents
Concentrate equipment of the high salinity containing mixture solution Download PDFInfo
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- CN207512240U CN207512240U CN201620598129.1U CN201620598129U CN207512240U CN 207512240 U CN207512240 U CN 207512240U CN 201620598129 U CN201620598129 U CN 201620598129U CN 207512240 U CN207512240 U CN 207512240U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model discloses a kind of high equipment of the salinity containing mixture solution of concentration, the first filter plant for being 0.1 50 μm including the filtering grain size being sequentially connected, to the second filter plant of interception rate >=99.5% of the substance of molecular weight >=1000, to third filter plant of the molecular weight for interception rate >=90% of 100 1000 substances, the concentrate liquid outlet of third filter plant is connected with the first collection device, third filtrate liquid outlet is connected with the second collection device, it further includes so that high salinity is containing the mixture solution edge pump that filter plant flows step by step and the salt content measurement device for measuring each liquid salt content.The utility model concentrated effect is excellent, and the purity of gained concentrate is high, and concentration process is stablized.
Description
Technical field
The utility model designs liquid concentration technical field, and in particular to a kind of high equipment of the salinity containing mixture solution of concentration.
Background technology
Liquid concentration is that the unit operation of partial solvent is removed from solution, is the part of solute and the uniform mixed liquor of solution
Separation process.Generally using evaporation concentration technique, evaporation concentration technique is primarily present following for traditional concentration of solution containing salinity
Problem, first, still causing the yield of subsequent product relatively low containing a large amount of solute in mother liquor after evaporative crystallization；Second is that evaporate it
Still there are a large amount of impurity to stop in original solution afterwards, cause product purity not high, inferior quality；Third, in evaporating concentration process easily
Cause the thermal decomposition of product, lead to the yield of product further to reduce；Fourth, the entire evaporation process used time is longer, it is higher to consume energy,
So that production cost greatly increases.In order to solve aforesaid liquid concentration, applicant is contemplated using embrane method
Separation concentration technique replaces traditional evaporation concentration technique to be concentrated to containing salinity solution.But applicant is had found by studying
Current membrane separating concentration technique can only be directed to containing the not high solution concentration of salinity in actual mechanical process effectively, for height
Salinity can not be concentrated effectively containing mixture solution, it is found by the applicant that saline solns are concentrated by general membrane separating method for concentration
The salt content of soluble-salt has had reached the concentration limit for 60000mg/L, can not be further dense even if improve operating pressure
The higher solution of the salt content that contracts.However, concentration operation of the high salinity containing mixture solution is exactly often needed in industrial processes
The technological operation to be carried out, thus at present method of the high salinity containing mixture solution can be concentrated there is an urgent need for a kind of.
For example, it is related in lithium production above-mentioned to concentration of the high salinity containing mixture solution.Lithium is a kind of important
Strategic resources substance is the indispensable important source material of modern high technology product.Lithium carbonate is the secondary lithium salts of production and metal
The basic material of lithium product, thus become the lithium product of dosage maximum in lithium industry, other lithium products are all carbonic acid on it
The downstream product of lithium.The production technology of lithium carbonate can be divided into salt lake bittern extraction according to the difference of raw material sources and ore carries
It takes.At present, then mainly using solid mineral extraction process, ore extraction lithium mainly uses spodumene, lepidolite etc. solid in China
Body lithium ore produces lithium carbonate and other lithium products.The with a long history of lithium resource is extracted from ore, technology is also more ripe, mainly
Production technology has lime sinter process and sulfuric acid process, and wherein sulfuric acid process is the most important method used at present.Current sulfuric acid process
Processing step is as follows：The fine grinding of lithium ore, acidleach, removes calcium and magnesium, filtering, evaporation and concentration, sinker, separating, washing, does roasting
It is dry, wherein the concentration of the lithium leachate of gained generally uses evaporating and concentrating process after going calcium and magnesium.The applicant the study found that on
It is high salinity containing mixture solution to state in technique lithium leachate, when operate according to above-mentioned processing step the filtering accuracy of filtering link compared with
Low, impurity content is higher in lithium leachate after filtering, causes subsequent product quality relatively low；Be concentrated by evaporation link duration,
Thickening efficiency is low, energy consumption is high, and the cost for producing lithium is caused to greatly increase.The applicant attempts to concentrate using traditional membrane separating
It is found during technical substitution aforesaid operations, lithium leachate occurs the situation of concentration stagnation in concentration at the very start in aforesaid operations, i.e.,
Raising operating pressure is made also can not effectively to be concentrated.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high salinity of the excellent concentration of concentrated effect containing miscellaneous
The equipment of solution.
In order to solve above-mentioned problem of the prior art, the utility model is realized using following technical scheme：
The utility model provides a kind of high equipment of the salinity containing mixture solution of concentration, and the filtering grain size including being sequentially connected is
0.1-50 μm of the first filter plant, the second filter plant to interception rate >=99.5% of the substance of molecular weight >=1000, to point
Third filter plant of the son amount for interception rate >=90% of 100-1000 substances, the concentrate liquid outlet of third filter plant are connected with
First collection device, third filtrate liquid outlet are connected with the second collection device, further include so that high salinity contains mixture solution along mistake step by step
It filters the pump of equipment flowing and measures the salt content measurement device of each liquid salt content.
High salinity removes grain size more than 0.1- first under the filtering of the first filter plant containing mixture solution according to grain size screening
The solid matter of 50 μm of larger particles, such as the deposit of some calcium-magnesium-containings increase before the filtering of the first filter plant
Coarse filtration operating unit filters out the large-sized solid particulate matter in saliferous liquid separation body, avoids these large-sized solid particulate matters pair
Filter medium causes mechanical damage in first filter plant, and the high salinity passes through the filtering of the first filter plant to be situated between containing mixture solution
The first filtrate is formed after matter.It is also screened from the first filtrate of the first filter plant filtering gained containing some by above-mentioned grain size
Some impurity that can not be removed, such as some colloidal substances, by the screening of the molecular weight of the second filter plant by molecular weight >=
1000 substance removes to obtain the higher solution of purity.By the filtering of above-mentioned double-filtration equipment, realize and high salinity is contained
For the deep purifying of mixture solution to meet to requirement of the high salinity containing mixture solution during subsequent concentration, first filtrate passes through the
The second filtrate is formed after the filter medium of two filter plants.The second filtrate flowed out from the second filter plant is in third filter plant
Operation condition under can realize salt content is concentrated into 130000mg/L and all can also further concentrated for 60000mg/L, it is described
Second filtrate forms concentrate after being stopped by the filter medium of third filter plant, across after the filter medium of third filter plant
Third filtrate is formed, the concentrate is that the high salinity stopped contains mixture solution, is not in the feelings that concentration is stagnated in concentration process
Condition.The collection device is preferably the fluid reservoir for closing.Concentrate of the high salinity containing mixture solution can be temporarily stored within closing
Fluid reservoir in, fluid reservoir can be good at ensure concentrate stability.The utility model mainly has a following benefit, and one
It is that can solve the technical issues of industrial high salinity can not be concentrated effectively containing mixture solution, is not easy to occur in concentration process dense
Contract situation about stagnating；Second is that the combination operation of above-mentioned two-stage secondary filter and concentration so that final products purity is very high, production
Product quality and concentrated effect are all very good；Third, facts have proved under above-mentioned each Parameter Conditions, can be operated compared with low energy consumption
Under produce the product of higher quality, production efficiency is higher, and economic benefit is best.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, the filtering of the third filter plant is situated between
Matter is made of DTRO films.The DTRO films are disc tube reverse osmosis (dt-ro) film, are suitable for the liquid of processing filtering high concentration, are more favorable for
Keep the concentrated, stable of third filter plant.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, the third filter plant is included at least
Two filter devices being sequentially connected, each filter device for interception rate >=90% of 100-1000 substances and keep molecular weight
The output quantity of third filtrate is not less than 8L/ (m2·h)。
Under these conditions, two filter devices stopped by filter medium the concentrate to be formed soluble-salt content it is bright
It is aobvious incremented by successively, and the output quantity of third filtrate is kept, thereby guarantee that concentrated effect.Increase the filtering dress of third filter plant
The update of filtration flux can effectively be realized by putting quantity, be more favorable for the concentration of the second filtrate, realized and contained mixture solution to high salinity
Multistage concentration, multiple combinations mode may be used in multistage concentration here, can be open, semi open model.
Specifically, using it is open when, the third filter plant include be sequentially connected first level filtering device, two level mistake
Device is filtered, the two-stage filter is equipped with the concentrated solution outlet for concentrate discharge, therefore two level in third filter plant
Filter device concentration is stopped the concentrate formed and is flowed directly out；During using semi open model, the third filter plant is included sequentially
Connected first level filtering device, two-stage filter, the concentrate that the two-stage filter is equipped with for concentrate discharge go out
Mouth and the concentrate refluxing opening that first level filtering device is back to for concentrate, the concentrate refluxing opening and first level filtering device
Inlet be connected, the concentrate refluxing opening of two-stage filter is equipped with the first valve, the concentrated solution outlet of two-stage filter
Equipped with the second valve.In third filter plant two-stage filter concentration stop formed concentrate return to its inlet with it is upper
The concentrate of one filter device outflow, which converges, is again introduced into last filter device, reaches concentration salt content and is then exhausted from later, by
This improves the thickening efficiency of solution.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, the third filter of the three-stage filtration equipment
Liquid outlet is connected with pans.Pans can play storage third filtrate, stablize third filtrate pressure, shunt third filtrate
To the effect of other operation link equipment.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, first filter plant, the second mistake
It is end-filtration device and/or cross-flow filtration device to filter equipment.It should be noted that cross-flow filtration mode refers in power plant
Under the action of high salinity containing mixture solution be parallel to film surface flowing, the shearing force energy that high salinity is generated containing mixture solution when flowing through film surface
It is enough to take away the particle that film surface is detained, ensure the filtration flux of filter plant, the high salinity for not passing through filter medium contains mixture solution
It generally requires to be back in filter device, thus keeps high salinity salt content containing mixture solution；End-filtration mode refers to what is stopped
Impurity particle is deposited on film surface, need to only overcome membrane resistance, and energy consumption is small, but work continuity and filter efficiency are less than mistake
Filter is flowed through, other than both of these case, can also combine the two utilization.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, further include the high salinity of control and contain mixture solution
The temperature control equipment of filtration temperature, by temperature control equipment by the fluid temperature control of links in optimum range, guarantor
The filtering and concentrating effect of each filter plant is demonstrate,proved.It facts have proved and control filtration temperature in 5-40 DEG C of filtering, concentrated effect most
It is good.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, the by-pass filtration equipment inlet connects
There is plate and frame filter device.Advance coarse filtration is carried out to saliferous liquid separation body by plate and frame filter device, filters out saliferous liquid separation body
In larger solid particle, the larger solid particulate matter of these volumes filter medium in the first filter plant of verifying is avoided to cause machinery
Damage.Thus it is more favorable for filtering of the saliferous liquid separation body in by-pass filtration equipment.
As being further improved for above-mentioned concentration equipment of the high salinity containing mixture solution, first filter plant, the second mistake
The filter medium of filter equipment is made of microfiltration membranes.Microfiltration membranes can be corrosion-resistant, disclosure satisfy that required filtering accuracy, is to concentration
System is protective effect, can effectively prevent fouling membrane, long lifespan, easy cleaning.
Below by way of description of the drawings and specific embodiment, the utility model is described in further detail.
Description of the drawings
Fig. 1 is the equipment flowsheet schematic diagram of embodiment one in the utility model.
Fig. 2 is the equipment flowsheet schematic diagram of embodiment two in the utility model.
Fig. 3 is the equipment flowsheet schematic diagram of embodiment three in the utility model.
Specific embodiment
High equipment of the salinity containing mixture solution, application of the method in lithium leachate is handled are concentrated below by way of the utility model
The utility model is described in further detail, after the lithium leachate removes magnesium calcium precipitate for lithium sulfate in lithium carbonate production process
Leachate, the mass percentage of soluble lithium salt content >=60000mg/L and water-insoluble in the lithium leachate be not low
In 0.1%.
It is being handled as shown in Figure 1, the utility model embodiment one provides a kind of high method of the salinity containing mixture solution of concentration
Application in lithium leachate, includes the following steps：
A, under the action of power plant pump 110, lithium leachate first passes around plate-frame filtering device and carries out coarse filtration, filters out
Bulky grain solid impurity in lithium leachate, by lithium leachate by filtering the first filter plant 1 that grain size is 0.1-50 μm, the
The filter medium that one filter plant 1 uses intercepts the substance that grain size is more than 0.1-50 μm for microfiltration membranes；
B, the first filtrate for the first filter plant 1 being passed through to be formed later flow to the interception rate of the substance of molecular weight >=1000 >=
99.5% the second filter plant 2, for the second filter plant 2 also using microfiltration membranes as filter medium, the first filtrate passes through second
The filter medium of filter plant forms the impurity such as the second filtrate, the colloidal substance of the first filtrate middle-molecular-weihydroxyethyl >=1000 and is situated between by filtering
Matter interception filters out；
C, by the second filtrate by molecular weight for 100-1000 substances interception rate >=90% third filter plant,
In, second filtrate forms concentration lithium leachate after being stopped by the filter medium of third filter plant, set across third filtering
Third filtrate is formed after standby filter medium；
The output quantity of third filtrate can be maintained at not less than 8L/ (m by the third filter plant2H) and make described
Soluble lithium salt content in concentration lithium leachate reaches more than 130000mg/L.The filter medium of the third filter plant by
DTRO films are formed.Whole process temperature control equipment is controlled in the first filter plant 1, the second filter plant 2, third filter plant
The filtration temperature of lithium leachate remains at 40 DEG C in 3.First filter plant 1 and the second filter plant 2 use end-filtration
Mode or cross-flow filtration mode.The third filter plant 3 can be single filter device, and each filter device is to molecular weight
Interception rate >=90% of 100-1000 substances and keep third filtrate output quantity be not less than 8L/ (m2·h).Third filtering is set
Concentration lithium leachate obtained by the last one filter device in standby 3 returns to the inlet of the filter device with being filled from upper one filtering
The concentration lithium leachate for putting outflow converges and is concentrated together into the filter device, is received after the lithium salt content to be concentrated to target
Collect the concentration lithium leachate, the concentration lithium leachate being collected into can be preserved temporarily and can also be flowed directly under lithium production technology
Subsequent production is used in one link sinker equipment.
Concentration is carried out to lithium leachate by the above method, concentrated effect is excellent, can realize that high lithium salts divides solution
Concentration, the lithium leachate purity of gained is high after concentration, also very high for the lithium carbonate product quality obtained by subsequent production,
Processing procedure can be compared with running under low energy consumption, and production cost is low, good in economic efficiency.
You need to add is that can periodically turn off the third filtrate liquid outlet of third filter plant 3 in concentration process
Third valve 410, then inputs clear water into third filter plant 3, and clear water enters third filtering with the flow velocity of 1.5-3m/s and sets
It is standby, it can preferably clear water flow velocity be 2.5-3m/s, continuously be passed through 24-64h, thus, it is possible to play periodic cleaning filter plant, protect
Demonstrate,prove the effect of filter plant filtration flux.
Such as Fig. 1, the present embodiment one additionally provides a kind of equipment for concentrating lithium leachate, including the filtering grain size being sequentially connected
For 0.1-50 μm of the first filter plant 1, the second filter plant 2 of interception rate >=99.5% of the substance of molecular weight >=1000, point
Third filter plant 3 of the son amount for interception rate >=90% of 100-1000 substances, the filtering of the first filter plant 1, second are set
Standby 2 be cross-flow filtration device and/or end-filtration device, the first filter plant 1, the second filter plant 2 filter medium by
Microfiltration membranes are formed, and the filter medium of the filter medium of the third filter plant 3 is made of DTRO films.These filter devices are sequentially
It is connected and the liquid salt content of each filter device outflow is incremented by successively, further includes so that high salinity edge containing mixture solution is filtered step by step
The pump 110 of equipment flowing and the salometry device for measuring each high salinity salt content containing mixture solution of link.The third filtering
The third filtrate (liquid of equipment 3 is connected with pans 4, and the pans 4 are the second collection device, third filter plant 3
Third filtrate liquid outlet is equipped with third valve 410.It further includes and the temperature of each high salinity temperature containing mixture solution of link is controlled to control dress
It puts.First filter plant, 1 inlet is connected with plate and frame filter device.Filtration flux >=8L/ of the third filter plant 3
(m2·h).The filter medium of first filter plant 1 is made of microfiltration membranes.The concentration lithium of the third filter plant 3 leaches
Liquid liquid outlet is connected with the first collection device, and first collection device is dense to concentrate lithium leachate storage device or sinker device
Contracting lithium leachate can be stored temporarily, can also be flowed directly into subsequent sinker device and be carried out sinker operation.
Embodiment two
As shown in Fig. 2, the present embodiment concentrates application and reality of high method of the salinity containing mixture solution in lithium leachate is handled
Apply example one the difference lies in, in the present embodiment third filter plant 3 include two first level filtering devices 31 connected in sequence,
Two-stage filter 32, the third filtrate liquid outlet of the two converges to be connected with pans 4, what two filter devices were formed after stopping
The soluble lithium salt content of concentration lithium leachate is followed successively by 130000mg/L, 180000mg/L.Lithium is concentrated in the present embodiment to leach
The equipment of liquid is Open architecture, i.e., the lithium salt content that two-stage filter 32 is isolated from third filter plant 3 is
180000mg/L concentration lithium leachates flow directly out and are collected for use as subsequent technique.
Embodiment three
As shown in figure 3, the present embodiment concentrates application and reality of high method of the salinity containing mixture solution in lithium leachate is handled
Apply example one the difference lies in,
The equipment for concentrating lithium leachate in the present embodiment in the present embodiment is semi-open type structure, i.e., from third filter plant 3
The inlet that the lithium salts leachate that middle two-stage filter 22 is isolated returns to first level filtering device 21 concentrates again, lithium salt content
It is flowed out after reaching 180000mg/L.Third filter plant 2 includes the first level filtering device 31 and two-stage filter that are sequentially connected
32, two-stage filter 32 is equipped with the outlet of concentration lithium salts leachate and concentration lithium salts leachate refluxing opening, and concentration lithium salts leaches
Liquid refluxing opening is equipped with the first valve 310 and is connected with the inlet of first level filtering device 31, in the outlet of concentration lithium salts leachate
Equipped with the second valve 320.The third filtrate liquid outlet of first level filtering device 31 and two-stage filter 32 converge and with pans 4
It is connected.The soluble lithium salt content of concentration lithium leachate that two filter devices are formed after stopping be followed successively by 130000mg/L,
180000mg/L.Concrete operations open the first valve 310 for line, close the second valve 320, and the lithium salts of lithium leachate to be concentrated contains
Amount closes the first valve 310 after reaching 180000mg/L, opens the second valve 320 so that concentration lithium leachate is discharged and received
Collection, third filtrate enter pans 4.On this condition, the present embodiment compared to embodiment one, two lithium leachate of embodiment it is dense
Contracting effect is more preferable, and concentration process is more stablized, for the lithium carbonate product quality obtained by subsequent production also highest.
Claims (7)
1. high equipment of the salinity containing mixture solution of concentration, which is characterized in that the filtering grain size including being sequentially connected is 0.1-50 μm
First filter plant (1), the second filter plant (2) to interception rate >=99.5% of the substance of molecular weight >=1000, to molecular weight
The third filter plant (3) of interception rate >=90% for 100-1000 substances, the concentrate liquid outlet of third filter plant (3) connect
The filtrate (liquid for having the first collection device, third filter plant (3) is connected with the second collection device, further includes so that high salinity is containing miscellaneous
The solution edge pump that filter plant flows step by step and the salt content measurement device for measuring each high salinity salt content containing mixture solution of link,
The filter device that the third filter plant (3) is sequentially connected including at least two, each filter device are 100- to molecular weight
Interception rate >=90% of 1000 substances and keep concentrate output quantity be not less than 8L/ (m2H), the third filter plant
(3) including the first level filtering device (31), the two-stage filter (32) that are sequentially connected, the two-stage filter (31) is equipped with
The concentrated solution outlet discharged for concentrate and the concentrate refluxing opening that concentrate is supplied to be back to first level filtering device (31), it is described
Concentrate refluxing opening is connected with the inlet of first level filtering device (31), and the concentrate refluxing opening of two-stage filter (32) is equipped with
First valve (310), the concentrated solution outlet of two-stage filter (32) are equipped with the second valve (320).
2. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that the third filter plant
(3) filter medium is made of DTRO films.
3. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that second collection device is
Pans (4).
4. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that first filter plant
(1), the second filter plant (2) is end-filtration device and/or cross-flow filtration device.
5. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that further include the high salinity of control and contain
The temperature control equipment of mixture solution filtration temperature.
6. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that first filter plant
(1) inlet is connected with plate and frame filter device.
7. equipment of the high salinity containing mixture solution is concentrated as described in claim 1, which is characterized in that first filter plant
(1), the filter medium of the second filter plant (2) is made of microfiltration membranes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620598129.1U CN207512240U (en) | 2016-06-17 | 2016-06-17 | Concentrate equipment of the high salinity containing mixture solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620598129.1U CN207512240U (en) | 2016-06-17 | 2016-06-17 | Concentrate equipment of the high salinity containing mixture solution |
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| Publication Number | Publication Date |
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| CN207512240U true CN207512240U (en) | 2018-06-19 |
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ID=62530569
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| CN201620598129.1U Active CN207512240U (en) | 2016-06-17 | 2016-06-17 | Concentrate equipment of the high salinity containing mixture solution |
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| Country | Link |
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| CN (1) | CN207512240U (en) |
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2016
- 2016-06-17 CN CN201620598129.1U patent/CN207512240U/en active Active
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