CN104016383A - Sodium sulfate evaporation crystallization device - Google Patents
Sodium sulfate evaporation crystallization device Download PDFInfo
- Publication number
- CN104016383A CN104016383A CN201410233922.7A CN201410233922A CN104016383A CN 104016383 A CN104016383 A CN 104016383A CN 201410233922 A CN201410233922 A CN 201410233922A CN 104016383 A CN104016383 A CN 104016383A
- Authority
- CN
- China
- Prior art keywords
- effect evaporation
- evaporation unit
- sodium sulfate
- pipe
- mother liquor
- 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
- 238000001704 evaporation Methods 0.000 title claims abstract description 67
- 230000008020 evaporation Effects 0.000 title claims abstract description 67
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 25
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 25
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 25
- 238000002425 crystallisation Methods 0.000 title claims abstract description 23
- 230000008025 crystallization Effects 0.000 title claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 239000012452 mother liquor Substances 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 239000013078 crystal Substances 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a sodium sulfate evaporation crystallization device which comprises a first effect evaporation unit, a second effect evaporation unit and a third effect evaporation unit which are connected in sequence, the first effect evaporation unit is connected with a steam input pipe, the third effect evaporation unit is connected with a feeding groove, a gas phase tube of the third effect evaporation unit is connected to a surface condenser, a vacuum pump is arranged on the surface condenser, and the surface condenser and a cooling tower form a cooling loop; evaporation condensate tubes of the second effect evaporation unit, the third effect evaporation unit and the surface condenser are connected to a condensate collection groove, a crystal slurry pipe of the second effect evaporation unit is connected to a cooler crystallizer, a spiral conveyer is arranged at the position of the inlet of the crystal slurry pipe, the output end of the cooling crystallizer is connected to a centrifuge, the centrifuge is provided with a solid salt output end and a mother liquor tube, and the mother liquor tube is connected to a mother liquor tank. The sodium sulfate evaporation crystallization device has the advantages of high crystallization efficiency and low heat energy consumption.
Description
Technical field
The present invention relates to a kind of evaporation separating device, be specifically related to a kind of sodium sulfate evaporated crystallization device.
Background technology
Evaporated crystallization device is widely used in the waste water treatment of the industries such as chemical industry, non-ferrous metal industry, pesticide industry, food service industry, pharmaceutical industry, the ammonia process of desulfurization, mine smelting, steel mill, oil field, by the recovery of crystal in waste water is deepened pure environment protection treating, qualified discharge for environment protection treating, comprehensive utilization.The crystallizations such as the ammonium chloride in waste water, Repone K, sodium sulfate are recycled.
Characteristic due to sodium sulfate material, the solubleness that is mainly sodium sulfate is subject to the variable effect of temperature larger, reach capacity state or approach state of saturation of concentration from evaporator evaporation discharging, conventional art is to enter equipment of crystallisation by cooling crystallisation by cooling, that is to say by decrease temperature crystalline, lower owing to entering the sodium sulfate saturated solution of equipment of crystallisation by cooling or approaching the strength of solution of state of saturation, though through cooling, the crystal amount of separating out is less, the sodium sulfate amount of solid of collecting after centrifugation is less, after equipment of crystallisation by cooling, centrifugal mother liquor temperature has large decline, the centrifuge mother liquor of a large amount of low temperatures must come back to vapo(u)rization system, again consume heat energy, cause a large amount of wastes of heat energy.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of sodium sulfate evaporated crystallization device of efficient energy-saving.
Technical scheme: for solving the problems of the technologies described above, a kind of sodium sulfate evaporated crystallization device provided by the invention, comprise the first effect evaporation element, the second effect evaporation element and the triple effect evaporation unit that connect successively, described the first effect evaporation element connects steam input pipe, described triple effect evaporation unit is connected with intake chute, the gas phase pipe of described triple effect evaporation unit is connected to surface condenser, on described surface condenser, vacuum pump is installed, and described surface condenser and cooling tower form cooling loop; The evaporation condensate pipe of described second effect evaporation element, triple effect evaporation unit and surface condenser is connected to condensate storage, the magma pipe of described the second effect evaporation element is connected to cooling crystallizer, the ingress of described magma pipe is provided with helix transporting device, the output terminal of described cooling crystallizer is connected to whizzer, described whizzer has solid salt output terminal and mother liquor pipe, and described mother liquor pipe is connected to mother liquor tank.
As preferably, for the material in mother liquor tank carries out crystallization again, described mother liquor tank is connected to the material input terminus of the second effect evaporation element by recycle pump.
As preferably, in order to improve the velocity of evaporation of material, described the first effect evaporation element, the second effect evaporation element and triple effect evaporation unit are forced circulation evaporation unit.
As preferably, for the ease of magma is discharged, and facilitate the installation of helix transporting device in crystallizer, the entrance of described magma pipe is positioned at the bottom center of the second effect evaporation element.
Beneficial effect: sodium sulfate evaporated crystallization device of the present invention can rise to the concentration of sodium sulfate in magma more than 65%, after centrifugation, collect more than 50% solid, centrifugal mother liquor can enter little thickener (cooling crystallizer) again, sodium sulfate mother liquor is slightly done to lower the temperature, make it separate out more crystal, so need to come back to the centrifuge mother liquor of vapo(u)rization system, not only amount is few, and temperature is higher, the heat energy that need to again consume is also less, has reached abundant energy-conservation object.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Embodiment: the structure of sodium sulfate evaporated crystallization device provided by the invention as shown in Figure 1, comprise the first effect evaporation element 1, the second effect evaporation element 2 and the triple effect evaporation unit 3 that connect successively, its design is first by adopting the mode of multiple-effect device to reach the object of saving steam, and each effect evaporation element inside all adopt recycle pump to carry out pump circulation, make material in system, there is flow velocity and velocity of evaporation faster.
Wherein the first effect evaporation element 1 connects steam input pipe, and steam reclaims by condensation after the well heater of the first effect evaporation element 1, the second effect evaporation element 2 and triple effect evaporation unit 3 successively, and temperature reduces successively.And triple effect evaporation unit 3 is connected with intake chute 5, the sewage of contains sodium sulfate evaporates by triple effect evaporation unit 3, the second effect evaporation element 2 and the first effect evaporation element 1 successively, and with the opposite direction of steam input, temperature raises successively.The gas phase pipe of triple effect evaporation unit 3 is connected to surface condenser 4, and vacuum pump 8 is installed on surface condenser 4, reduces the boiling point of the medium that is condensed by the air pressure in reduction surface condenser 4.Surface condenser 4 forms cooling loop with cooling tower 7, and cooling tower 7 passes into cooling circulating water (CWS).And the evaporation condensate Guan Jun of second effect evaporation element 2, triple effect evaporation unit 3 and surface condenser 4 is connected to condensate storage 6, by condensed fluid collection discharge.
Bottom centre at the second effect evaporation element 2 has magma pipe, and magma pipe is connected to cooling crystallizer 11, and cooling crystallizer is also referred to as thickener, and the characteristic of utilizing sodium sulfate solubility with temperature to change is carried out decrease temperature crystalline to it.The ingress of magma pipe is provided with helix transporting device, this helix transporting device can be selected before applicant disclosed crystallizer discharge port preventing clogging up device in granted patent ZL201320500070.4, utilizes stir shaft bottom and the spiral plate of its synchronous rotary to give the thrust of advancing containing crystallized stock in pipeline.
Mother liquor after cooling crystallizer 11 crystallizations outputs to whizzer 9, the high speed rotating of whizzer 9 makes solid salt (sulfate crystal) separated with mother liquor and discharge from solid salt output terminal, mother liquor after separated enters mother liquor tank 10, then being recycled pump drives, the second effect evaporation element 2 heating can be got back to, also cooling crystallizer 11 decrease temperature crystalline again can be directly entered.
Through using checking, sodium sulfate evaporated crystallization device of the present invention can rise to the concentration of sodium sulfate in magma more than 65%, after centrifugation, collect wherein more than 50% crystal, centrifugal mother liquor enters after cooling crystallizer again, sodium sulfate mother liquor is slightly done to lower the temperature and just can separate out more crystal, the amount of centrifuge mother liquor that need to again get back to like this vapo(u)rization system is just corresponding less, and also corresponding raising of its temperature compared to existing technology, need so the heat energy (raw steam) again consuming also with regard to corresponding minimizing, improved the utilization ratio of steam, also just reached abundant energy-conservation object.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to claim scope.
Claims (4)
1. a sodium sulfate evaporated crystallization device, comprise the first effect evaporation element, the second effect evaporation element and the triple effect evaporation unit that connect successively, described the first effect evaporation element connects steam input pipe, described triple effect evaporation unit is connected with intake chute, it is characterized in that: the gas phase pipe of described triple effect evaporation unit is connected to surface condenser, on described surface condenser, vacuum pump is installed, described surface condenser and cooling tower form cooling loop; The evaporation condensate pipe of described second effect evaporation element, triple effect evaporation unit and surface condenser is connected to condensate storage, the magma pipe of described the second effect evaporation element is connected to cooling crystallizer, the ingress of described magma pipe is provided with helix transporting device, the output terminal of described cooling crystallizer is connected to whizzer, described whizzer has solid salt output terminal and mother liquor pipe, and described mother liquor pipe is connected to mother liquor tank.
2. sodium sulfate evaporated crystallization device according to claim 1, is characterized in that: described mother liquor tank is connected to the material input terminus of the second effect evaporation element by recycle pump.
3. sodium sulfate evaporated crystallization device according to claim 1, is characterized in that: described the first effect evaporation element, the second effect evaporation element and triple effect evaporation unit are forced circulation evaporation unit.
4. sodium sulfate evaporated crystallization device according to claim 1, is characterized in that: the entrance of described magma pipe is positioned at the bottom center of the second effect evaporation element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233922.7A CN104016383A (en) | 2014-05-30 | 2014-05-30 | Sodium sulfate evaporation crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233922.7A CN104016383A (en) | 2014-05-30 | 2014-05-30 | Sodium sulfate evaporation crystallization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104016383A true CN104016383A (en) | 2014-09-03 |
Family
ID=51433446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410233922.7A Pending CN104016383A (en) | 2014-05-30 | 2014-05-30 | Sodium sulfate evaporation crystallization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104016383A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984057A (en) * | 2017-05-26 | 2017-07-28 | 江苏嘉泰蒸发设备股份有限公司 | A kind of forced-circulation evaporation crystallization apparatus with multiple-effect evaporation unit |
| CN108568133A (en) * | 2018-05-25 | 2018-09-25 | 安徽金龙机械有限公司 | A kind of anhydrous sodium sulphate evaporated crystallization device |
| CN108928838A (en) * | 2018-06-28 | 2018-12-04 | 新疆华泰重化工有限责任公司 | A kind of process flow and equipment of alkaline brine denitration by-product production anhydrous sodium sulphate |
| CN114210087A (en) * | 2021-12-13 | 2022-03-22 | 江西赣锋锂业股份有限公司 | Non-medium freezing crystallization system |
-
2014
- 2014-05-30 CN CN201410233922.7A patent/CN104016383A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984057A (en) * | 2017-05-26 | 2017-07-28 | 江苏嘉泰蒸发设备股份有限公司 | A kind of forced-circulation evaporation crystallization apparatus with multiple-effect evaporation unit |
| CN108568133A (en) * | 2018-05-25 | 2018-09-25 | 安徽金龙机械有限公司 | A kind of anhydrous sodium sulphate evaporated crystallization device |
| CN108928838A (en) * | 2018-06-28 | 2018-12-04 | 新疆华泰重化工有限责任公司 | A kind of process flow and equipment of alkaline brine denitration by-product production anhydrous sodium sulphate |
| CN114210087A (en) * | 2021-12-13 | 2022-03-22 | 江西赣锋锂业股份有限公司 | Non-medium freezing crystallization system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |
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| WD01 | Invention patent application deemed withdrawn after publication |