CN102320625A - Treatment method of sodium chloride solution containing sodium sulfate - Google Patents
Treatment method of sodium chloride solution containing sodium sulfate Download PDFInfo
- Publication number
- CN102320625A CN102320625A CN201110145625A CN201110145625A CN102320625A CN 102320625 A CN102320625 A CN 102320625A CN 201110145625 A CN201110145625 A CN 201110145625A CN 201110145625 A CN201110145625 A CN 201110145625A CN 102320625 A CN102320625 A CN 102320625A
- Authority
- CN
- China
- Prior art keywords
- solution
- sodium sulfate
- sodium chloride
- chloride solution
- treatment process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 68
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 62
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 49
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 49
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 239000008234 soft water Substances 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 21
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000001728 nano-filtration Methods 0.000 abstract description 3
- 238000011033 desalting Methods 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 39
- 238000003860 storage Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 9
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 9
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 8
- 239000012267 brine Substances 0.000 description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 8
- 229910001961 silver nitrate Inorganic materials 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 2
- 229940012189 methyl orange Drugs 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012470 diluted sample Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- LGRLWUINFJPLSH-UHFFFAOYSA-N methanide Chemical compound [CH3-] LGRLWUINFJPLSH-UHFFFAOYSA-N 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a treatment method of sodium chloride solution containing sodium sulfate. The method comprises the following steps of: (1) adjusting the pH of the solution to be between 4 and 9, and concentrating the sodium sulfate in the solution to 80-130g/l by adopting a nano-filtration membrane; and (2) adding soft water in a volume which is 1 to 5 times volume of the solution into the solution of the step (1), performing constant dissolution desalting by using the nano-filtration membrane, discharging the obtained thick solution, and desalting the obtained thin solution. The method has the advantages of saving the sodium chloride solution and avoiding environmental pollution, and has the advantages of short flow, low energy consumption and low equipment investment.
Description
Technical field
The present invention relates to a kind of treatment process of sodium chloride solution of contains sodium sulfate, the sodium chloride solution that belongs to the contains sodium sulfate of industries such as chlor-alkali, soda ash, the salt manufacturing field of coming out.
Technical background
In the embrane method denitrification process in fields such as chlor-alkali, can produce the sodium chloride solution of contains sodium sulfate, be commonly called as dense glass gall.Wherein contains sodium sulfate 40 ~ 120g/l, sodium chloride-containing 180 ~ 240g/l.Present treatment process mainly contains following several kinds:
The one, adopt the method for discharging to handle, because dense glass gall except that containing sodium sulfate, also contains a large amount of sodium-chlor, as directly discharging, not only wasted the sodium-chlor resource, and caused environmental pollution.
The 2nd, adopt the refrigerated method, sulfate crystal is wherein separated out, separate out sodium sulfate poor going of salt made from earth containing a comparatively high percentage of sodium chloride water salt afterwards, reach the purpose of separating sodium sulfate and sodium-chlor.Application number is the method that 200710088246.9 patent discloses a kind of freezing separating mirabilite by brine solution.It is alkaline that the solution of contains sodium sulfate is regulated pH value, separates out sal glauberi after being cooled to 10 ~ 0 ℃, hangs down salt made from earth containing a comparatively high percentage of sodium chloride water and discharges as by product.Application number is the method that 200910036713.2 patent discloses the denitration of a kind of light salt brine embrane method, and this invention is carried out twice to light salt brine and concentrated, and the dense glass gall that obtains cools to 3 ~ 5 ℃ and carries out crystallization to remove sodium sulfate." light salt brine embrane method-freezing denitrating technique " literary composition that " Chinese chlor-alkali " 2009 the 9th phases deliver, its dense glass gall treatment process: adopt 3 sections advanced heavy nitre processes thoroughly to solve and remove nitre system saltcake blocking problem.For the first time heavy nitre process occurs in liquid concentrator and stores heavy nitre groove; Because liquid concentrator saltcake quality concentration possibly reach 60～80 g/L; Saltcake meeting spontaneous nucleation is directly taken out the saltcake of heavy nitre trench bottom toward whizzer under high density, and clear liquid is extracted into one-level precool heat exchanger device from the middle part of groove.Like this, avoided one-level precooling plate-type heat exchanger to be stopped up by saltcake.For the second time heavy nitre process occurs in converts the halogen groove, because this moment, temperature was reduced to about 10 ℃, the sodium chloride crystal sedimentation is arranged; Directly take out the saltcake of converting the halogen trench bottom toward heavy nitre groove; Clear liquid is extracted into vaporizer from the middle part of groove, like this, has avoided vaporizer to be stopped up by saltcake; Heavy for the third time nitre be temperature when-5 ℃ of left and right sides, carry out directly entering whizzer separation after the complete sedimentation of saltcake at heavy nitre groove.All accomplish separating of sodium sulfate and sodium-chlor at above-mentioned freezing technique of nitrate removal, have shortcomings such as long flow path, energy consumption is high, facility investment is big by cooling.
Summary of the invention
Purpose of design: the present invention is directed to deficiency of the prior art, design a kind ofly have that flow process is short, equipment simple, the treatment process of the sodium chloride solution of reduced investment, save energy, working cost is low, processing cost is low a kind of contains sodium sulfate.
Technical scheme: a kind of treatment process of sodium chloride solution of contains sodium sulfate, (1) regulator solution pH=4 ~ 9 adopt nf membrane the sodium sulfate in the solution to be carried dense to 80 ~ 130g/l; (2) add the soft water of 1 ~ 5 times of liquor capacity in the solution in the step (1), carry out permanent solution-off salt with nf membrane, the dope that obtains removes discharging, light going of the liquid salt that obtains.
The sodium chloride solution of contains sodium sulfate is regulated pH=4 ~ 9 with sodium hydroxide, and controlled temperature gets into the nf membrane concentration systems and concentrates between 10 ~ 40 ℃, and control pressure is carried the sodium sulfate in the solution dense to 80 ~ 130g/l between 2.0 ~ 3.8MPa; Carry the soft water that adds 1 ~ 5 times of liquor capacity in the solution after dense, between control pressure 1.5 ~ 3.8MPa, carry out permanent solution-off salt with nf membrane between 10 ~ 50 ℃ of the temperature, the dope that obtains removes discharging, light going of the liquid salt that obtains.
The nf membrane molecular weight cut-off of selecting for use in this programme is 150 ~ 400, electronegative under the condition of pH >=4; The molecular weight of sodium sulfate is 142, is slightly less than the molecular weight cut-off of film, but because this film is electronegative under the condition of pH >=4; When the film surface has negative charge, the divalent negatively charged ion had extraordinary rejection; Therefore in this programme nf membrane to the rejection of sodium sulfate still more than 96%, guarantee sodium sulphate content in the light liquid below 5g/l, meeting salt is with the quality index of light salt brine.
Permanent solution-off salt in this programme can be successive, also can be intermittently.
Continuous permanent solution-off salt operating method: will contain the solution of carrying after dense and pump in the storage tank; The control certain liquid level adds soft water in storage tank, add soft simultaneously solution get into nf membrane and separate; Isolating light liquid is collected; Dope is back to storage tank, and it is invariable to protect the liquid level of this storage tank, when amount of water reaches 1 ~ 5 times of liquor capacity, stops.Can control the recovery of sodium-chlor in sodium sulfate concentration and the light liquid in the last dope through the multiple of regulating amount of water, the multiple of adding is many more, and the recovery of sodium-chlor is high more in low more, the light liquid of concentration of the sodium sulfate in the last dope.Add the water mode and can directly add storage tank, also can be added in the pipeline of solution.
Permanent solution-off salt operating method intermittently: the solution that will carry after dense pumps in the 1# storage tank, and the ratio by solution flow 1:1 adds soft water simultaneously, and the mixed solution of solution and water entering nf membrane is separated in the 1# storage tank, isolating light liquid collection; Dope gets into the 2# storage tank, and the ratio by dope flow 1:1 adds soft water simultaneously, and the mixed solution of solution and water gets into nf membrane once more and separates isolating light liquid collection in the 2# storage tank; Dope gets into the 3# storage tank, repeats above-mentioned steps.The number of elements through storage tank is set and the multiplicity of nanofiltration separation are controlled amount of water.The number of elements that storage tank is set is 1 ~ 5, and multiplicity is 0 ~ 4 time.The storage tank that is provided with is more, the multiple number of times is many more, and the recovery of sodium-chlor is high more in low more, the light liquid of concentration of the sodium sulfate in the then last dope.Add the water mode and can directly add storage tank, also can be added in the pipeline of solution.
The water that adopts in this programme has passed through softening processing, does not contain calcium ions and magnesium ions, and the formation that this has just effectively been avoided calcium sulfate prevents the deposition of calcium sulfate on the film surface, so the film in this programme is difficult for dirty stifled.
The dope component that this programme obtains is: sodium sulphate content 60 ~ 130 g/l, sodium chloride content 5 ~ 50g/l, can directly discharge.
The light fluid component that this programme obtains is: sodium sulphate content 1 ~ 5 g/l, sodium chloride content 40 ~ 120g/l are used for the change salt that ion film caustic soda prepares crude salt.
The present invention compares with background technology, and the one, practiced thrift the sodium-chlor resource, avoided environmental pollution; The 2nd, flow process is short, energy consumption is low, facility investment is little.
Embodiment
Implement explanation: a kind of treatment process of sodium chloride solution of contains sodium sulfate; (1) sodium chloride solution of contains sodium sulfate is regulated pH=4 ~ 9 with sodium hydroxide; Controlled temperature is between 10 ~ 40 ℃; Get into the nf membrane concentration systems and concentrate, control pressure adopts nf membrane the sodium sulfate in the solution to be carried dense to 80 ~ 130g/l between 2.0 ~ 3.8MPa;
(2) add the soft water of 1 ~ 5 times of liquor capacity in the solution in the step (1), between control pressure 1.5 ~ 3.8MPa, carry out permanent solution-off salt with nf membrane between 10 ~ 50 ℃ of the temperature, the dope that obtains removes discharging, light going of the liquid salt that obtains.
The sodium chloride solution contains sodium sulfate 40 ~ 120g/l of said contains sodium sulfate, sodium chloride-containing 180 ~ 240g/l.
Said nf membrane molecular weight cut-off is 150 ~ 400, electronegative under the condition of pH >=4.
Said permanent solution-off salt is continous way or interval type.
Said dope contains sodium sulfate 60 ~ 130 g/l, sodium chloride-containing 5 ~ 50g/l.
Said light liquid contains sodium sulfate 1 ~ 5 g/l, sodium chloride-containing 40 ~ 120g/l.
Said employing nf membrane is put forward dense pressure-controlling with the sodium sulfate in the solution and is controlled at 10 ~ 50 ℃ in 2.0 ~ 3.8MPa, temperature.
Said permanent solution-off salt pressure-controlling is controlled at 10 ~ 50 ℃ in 1.5 ~ 3.8MPa, temperature.
Na in the salt brine solution
2
SO
4
Mensuration
Principle
SO
4 2-From acid brine solution with BaSO
4The form deposition is confirmed its weight.
Reagent and index agent
1, methyl orange indicator
2, dense HCl
Annotate: HCl concentration determines during the requirements for starting construction meeting.
3, BaCl
2Solution, 0.5mol BaCl
2
4, ethanol
Instrument
1, beaker, 100ml, 500ml
2, glass microfiber filter paper (annotating: predrying before analysis)
3, Whatman40 filter paper
4, Bu Shi filter assemblies
5, drying oven
6, glass moisture eliminator
7, heat dish and whisking appliance
8, pipette, 5ml, 10ml, 50ml
Step
1, required sampling amount is according to Na in the salt brine solution
2SO
4Concentration, should use following sampling amount:
2, get the sampling amount of required analysis with pipette, put into the beaker of the 500mL that fills 100 mL zero(ppm) water;
3, add 1-2 and drip methyl orange indicator, and, add the excessive HCl of 2mL with dense HCl neutralization solution;
4, mixing solutions, the existence of inspection insolubles;
If 5 have insolubles to exist, quantitatively be filtered in the clean 500ml beaker with Whatman40 filter paper;
6, be heated to closely and boil, stir and also add the hot 0.5mol BaCl of 20mL
2Solution;
7, boiling mixture is about 15 minutes;
8, remove beaker, left standstill 10 minutes;
9, pre-dry glass microfiber of weighing mixes paper (A gram);
10, use the filter paper filtering solution of weighing in advance through B;
11, quantitatively shift material in the beaker to B, and with hot water injection's throw out of about 100mL;
12, wash throw out at last with the 20mL methide;
13, transfer to filter paper on the sight glass, and in stove drying at least 1 hour, preferably spend the night under 120 ℃;
14, move to the glass moisture eliminator to filter paper, let its cooling;
15, weighing throw out and filter paper (B gram);
Determination of chloride ions in the salt solution
1. the preparation of experiment reagent
1.1 Silver Nitrate standardized solution:
Take by weighing the 2.395g Silver Nitrate, dissolved dilution is stored in the brown bottle to 1L.
1.2 potassiumchromate indicating liquid:
Take by weighing the 5g potassiumchromate and be dissolved in the less water, drip 1.1 silver nitrate solutiones, shake up to there being red precipitate to generate.Leave standstill 12h, filtering also then, water is diluted to 100ml. with filtrating
2. experimental procedure
2.1 draw the 5.00ml diluted sample to 100ml, get 5.00ml again and be diluted to 250ml.
2.2 get in 2.1 solution 25.00ml in Erlenmeyer flask, regulate pH and (generally need not transfer) 6.5～10.5 6.5～10.5.Add 1.00ml potassiumchromate indicating liquid then, terminal point just occurred being, record consumption V. with Silver Nitrate standard solution titration to brick-red deposition
3. calculation formula
X=49.63（V-0.3）/25
X%---cl ions percentage composition;
V---silver nitrate solution consumption during the test sample article, ml.
What need understand is: though the foregoing description is to the mentality of designing of the present invention detailed text description of contrasting; But these text descriptions; Just the simple text of mentality of designing of the present invention is described; Rather than to the restriction of mentality of designing of the present invention, any combination, increase or modification that does not exceed mentality of designing of the present invention all falls in protection scope of the present invention.
Claims (8)
1. the treatment process of the sodium chloride solution of a contains sodium sulfate is characterized in that:
(1) regulator solution pH=4 ~ 9 adopt nf membrane the sodium sulfate in the solution to be carried dense to 80 ~ 130g/l;
(2) add the soft water of 1 ~ 5 times of liquor capacity in the solution in the step (1), carry out permanent solution-off salt with nf membrane, the dope that obtains removes discharging, light going of the liquid salt that obtains.
2. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1 is characterized in that: the sodium chloride solution contains sodium sulfate 40 ~ 120g/l of said contains sodium sulfate, sodium chloride-containing 180 ~ 240g/l.
3. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1, it is characterized in that: said nf membrane molecular weight cut-off is 150 ~ 400, electronegative under the condition of pH >=4.
4. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1, it is characterized in that: said permanent solution-off salt is continous way or interval type.
5. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1 is characterized in that: said dope contains sodium sulfate 60 ~ 130 g/l, sodium chloride-containing 5 ~ 50g/l.
6. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1 is characterized in that: said light liquid contains sodium sulfate 1 ~ 5 g/l, sodium chloride-containing 40 ~ 120g/l.
7. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1, it is characterized in that: said employing nf membrane is put forward dense pressure-controlling with the sodium sulfate in the solution and is controlled at 10 ~ 50 ℃ in 2.0 ~ 3.8MPa, temperature.
8. the treatment process of the sodium chloride solution of contains sodium sulfate according to claim 1, it is characterized in that: said permanent solution-off salt pressure-controlling is controlled at 10 ~ 50 ℃ in 1.5 ~ 3.8MPa, temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145625A CN102320625A (en) | 2011-06-01 | 2011-06-01 | Treatment method of sodium chloride solution containing sodium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145625A CN102320625A (en) | 2011-06-01 | 2011-06-01 | Treatment method of sodium chloride solution containing sodium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102320625A true CN102320625A (en) | 2012-01-18 |
Family
ID=45448505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110145625A Pending CN102320625A (en) | 2011-06-01 | 2011-06-01 | Treatment method of sodium chloride solution containing sodium sulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102320625A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616891A (en) * | 2011-12-31 | 2012-08-01 | 广东先导稀材股份有限公司 | Method for treating sewage containing sodium sulfate and sodium chloride |
| CN104326488A (en) * | 2014-10-16 | 2015-02-04 | 中国中轻国际工程有限公司 | Sodium sulfate and sodium chloride production process |
| CN104695252A (en) * | 2015-02-13 | 2015-06-10 | 中盐金坛盐化有限责任公司 | Method for preparing dyeing accelerant from high liquid glauber salt |
| CN109607574A (en) * | 2019-01-03 | 2019-04-12 | 中国中轻国际工程有限公司 | A kind of strong brine production sal prunella technique |
| CN111233006A (en) * | 2020-02-28 | 2020-06-05 | 上海晶宇环境工程股份有限公司 | Method and device for treating mixed salt containing sodium chloride |
| CN114590940A (en) * | 2022-02-28 | 2022-06-07 | 中盐金坛盐化有限责任公司 | Salt preparation method for purifying sodium sulfate type saturated brine by membrane method |
| CN115321559A (en) * | 2022-08-26 | 2022-11-11 | 山东泉益环保科技有限公司 | Device and method for producing high-concentration sodium sulfate solution by adopting nanofiltration membrane concentration technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759923A (en) * | 2004-10-15 | 2006-04-19 | 凯膜过滤技术(上海)有限公司 | Method through hyper filtration method for treating aqueous solution of dense etio sodium chloride |
| CN101044091A (en) * | 2004-10-22 | 2007-09-26 | 阿克佐诺贝尔股份有限公司 | Method for crystallizing soluble salts of divalent anions from brine |
| US20100300969A1 (en) * | 2006-06-23 | 2010-12-02 | Mainstream Engineering Corp. | Apparatus and Method for Self-Heating and Self-Hydrating Foods and Beverages |
-
2011
- 2011-06-01 CN CN201110145625A patent/CN102320625A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759923A (en) * | 2004-10-15 | 2006-04-19 | 凯膜过滤技术(上海)有限公司 | Method through hyper filtration method for treating aqueous solution of dense etio sodium chloride |
| CN101044091A (en) * | 2004-10-22 | 2007-09-26 | 阿克佐诺贝尔股份有限公司 | Method for crystallizing soluble salts of divalent anions from brine |
| US20100300969A1 (en) * | 2006-06-23 | 2010-12-02 | Mainstream Engineering Corp. | Apparatus and Method for Self-Heating and Self-Hydrating Foods and Beverages |
Non-Patent Citations (1)
| Title |
|---|
| 陈欢林: "《新型分离技术》", 31 July 2005, article "纳滤恒容脱盐", pages: 56 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616891A (en) * | 2011-12-31 | 2012-08-01 | 广东先导稀材股份有限公司 | Method for treating sewage containing sodium sulfate and sodium chloride |
| CN104326488A (en) * | 2014-10-16 | 2015-02-04 | 中国中轻国际工程有限公司 | Sodium sulfate and sodium chloride production process |
| CN104695252A (en) * | 2015-02-13 | 2015-06-10 | 中盐金坛盐化有限责任公司 | Method for preparing dyeing accelerant from high liquid glauber salt |
| CN104695252B (en) * | 2015-02-13 | 2016-06-29 | 中盐金坛盐化有限责任公司 | A kind of method adopting high glass gall to prepare accelerant |
| CN109607574A (en) * | 2019-01-03 | 2019-04-12 | 中国中轻国际工程有限公司 | A kind of strong brine production sal prunella technique |
| CN111233006A (en) * | 2020-02-28 | 2020-06-05 | 上海晶宇环境工程股份有限公司 | Method and device for treating mixed salt containing sodium chloride |
| CN114590940A (en) * | 2022-02-28 | 2022-06-07 | 中盐金坛盐化有限责任公司 | Salt preparation method for purifying sodium sulfate type saturated brine by membrane method |
| CN114590940B (en) * | 2022-02-28 | 2023-08-22 | 中盐金坛盐化有限责任公司 | Salt preparation method for purifying sodium sulfate type saturated brine by membrane method |
| CN115321559A (en) * | 2022-08-26 | 2022-11-11 | 山东泉益环保科技有限公司 | Device and method for producing high-concentration sodium sulfate solution by adopting nanofiltration membrane concentration technology |
| CN115321559B (en) * | 2022-08-26 | 2024-04-05 | 山东泉益环保科技有限公司 | Device and method for producing high-concentration sodium sulfate solution by nanofiltration membrane concentration technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102320625A (en) | Treatment method of sodium chloride solution containing sodium sulfate | |
| US10689264B2 (en) | Hybrid desalination systems and associated methods | |
| Choi et al. | Integrated submerged membrane distillation-adsorption system for rubidium recovery | |
| CA2847237C (en) | Evaporative treatment method for aqueous solution | |
| CN105540619A (en) | Method for directly preparing battery grade lithium carbonate from salt lake brine with high magnesium-to-lithium ratio | |
| CN103738984A (en) | Method and device for extracting bitten lithium chloride | |
| CN103570048A (en) | Method for refining lithium from salt lake brine with high magnesium-lithium ratio | |
| CN102417194A (en) | A kind of chelating resin deep magnesium removal method for extracting lithium from salt lake brine | |
| CN106746128A (en) | Flue gas desulfurization waste-water is classified dual treatment method and system | |
| CN203741054U (en) | Extracting device of lithium chloride in bittern | |
| CN101961563B (en) | Acid-cooling crystallization device for bath fluid | |
| CN110451529A (en) | A kind of method of purification of sodium chloride for injection | |
| Ahmad | Assessment of freezing desalination technologies | |
| CN105480990A (en) | Equipment and method for preparing anhydrous sodium sulfate | |
| CN206457365U (en) | Flue gas desulfurization waste-water is classified dual treatment system | |
| CN108314112B (en) | Method for treating waste water containing ammonium salt | |
| CN211972013U (en) | Device for removing sodium sulfate in coal chemical industry byproduct sodium chloride saturated solution | |
| CN201313875Y (en) | IDA method glyphosate mother liquor extraction system | |
| CN112777815B (en) | A kind of processing method and processing system containing brine | |
| CN103827037B (en) | For removing the method for carbonate from caustic scrubber waste liquor stream | |
| CN205933425U (en) | Zero discharge system of desulfurization waste water | |
| CN101434620B (en) | Power extraction system and process for glyphosate mother liquor by IDA method | |
| CN105293532A (en) | Calcium removal process for lithium chloride solution during production | |
| CN206535223U (en) | A kind of multiple-effect evaporation crystal system for handling zinc abstraction water | |
| CN204356182U (en) | Comprehensive recovery and purification system for supernatant wastewater generated after nickel carbonate is prepared by nickel electrolysis liquid purification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120118 |