CN204891247U - Sodium nitrate solution evaporation crystallization equipment - Google Patents
Sodium nitrate solution evaporation crystallization equipment Download PDFInfo
- Publication number
- CN204891247U CN204891247U CN201520535027.0U CN201520535027U CN204891247U CN 204891247 U CN204891247 U CN 204891247U CN 201520535027 U CN201520535027 U CN 201520535027U CN 204891247 U CN204891247 U CN 204891247U
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- China
- Prior art keywords
- nitrate solution
- sodium nitrate
- separator
- heat exchanger
- steam
- 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.)
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- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 235000010344 sodium nitrate Nutrition 0.000 title claims abstract description 37
- 239000004317 sodium nitrate Substances 0.000 title claims abstract description 37
- 238000002425 crystallisation Methods 0.000 title claims abstract description 29
- 230000008025 crystallization Effects 0.000 title claims abstract description 29
- 238000001704 evaporation Methods 0.000 title claims abstract description 25
- 230000008020 evaporation Effects 0.000 title claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 238000009833 condensation Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 15
- 239000012141 concentrate Substances 0.000 claims description 13
- 239000012452 mother liquor Substances 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 4
- 102000005393 Sodium-Potassium-Exchanging ATPase Human genes 0.000 claims description 2
- 108010006431 Sodium-Potassium-Exchanging ATPase Proteins 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000005494 condensation Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a sodium nitrate solution evaporation crystallization equipment, it includes preheating device, evaporation plant and crystal separation device. Sodium nitrate solution evaporation crystallization equipment replaced traditional steam heating's evaporation crystallization mode, the flash steam that adoption compressor compressed cooling crystallizer discharged out, flash steam after the use compression is as heating steam, and the circulation of equipment self has been realized through setting up the return circuit, steam heating has been accomplished need not to give birth to, need not condensation device, only need a small amount of electric energy just can reach the effect of good evaporation, thereby be sodium nitrate solution treatment in -process reduce cost, a new way has been opened up to the energy saving.
Description
Technical field
The utility model relates to the condensing crystallizing technical field of solution, is specifically related to a kind of sodium nitrate solution evaporation crystallization equipment.
Background technology
Sodium nitrate solution crystallization adopts evaporating and concentrating process usually, and steam consumption is high, and sodium nitrate solution produces heavy corrosion to material.Based on this, adopt evaporation technology to evaporate, equipment material selects corrosion resistant titanium material, thus causes the raising of equipment cost.Wherein, the form evaporator of multiple-effect evaporation adopts comparatively general.But in recent years, along with the rise at full speed of steam price, the energy consumption of this kind of evaporation process also makes vast business burden sharply increase.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sodium nitrate solution evaporation crystallization equipment, by the self-loopa between main heat exchanger and separator, adopt the indirect steam that compressor compresses crystal separator gives off, use the indirect steam after compression to use as heating steam, realize the object of evaporation and concentration, thus economize energy, reduce costs, enhance productivity.
For solving the problem, the technical scheme that the utility model adopts is as follows:
A kind of sodium nitrate solution evaporation crystallization equipment, it comprises preheating device, vaporising device and Crystallization Separation device;
Described preheating device comprises material buffer tank and preheater, and sodium nitrate solution enters material buffer tank and pumps in preheater through conveying pipeline and carry out preheating;
Described vaporising device comprises main heat exchanger, separator, vapour compression machine and chilled water tank, wherein, the discharge end of preheater is connected on the feed end of main heat exchanger after condensing heat exchanger, main heat exchanger is connected with separator and forms closed-loop path, sodium nitrate solution after preheating in closed-loop path cocycle through main heat exchanger and separator, constantly isolate the concentrate of steam and high saturation, especially, between the steam (vapor) outlet of described separator and main heat exchanger, also vapour compression machine is set, the steam that separator is separated enters vapour compression machine adiabatic compression, reenter main heat exchanger cycle heat exchange, steam-condensation Cheng Shuihou enters chilled water tank, chilled water tank is connected on the condensation-water drain of main heat exchanger by water-supply-pipe,
Described Crystallization Separation device comprises cooler crystallizer and sedimentator device, cooler crystallizer and sedimentator device are connected to the discharge end of separator in turn by a discharging pump, the concentrate reaching hypersaturated state pumps into cooler crystallizer crystallization, and isolates crystal through sedimentator device.
The utility model can also pass through following scheme implementation:
Preferred scheme is had as one of the present utility model, described main heat exchanger and separator connect and compose a closed-loop path by pipeline, pipeline is provided with a circulating pump, sodium nitrate solution after preheating enters main heat exchanger and heating steam heat exchange, the sodium nitrate solution obtaining heat enters separator flash separation and goes out indirect steam and concentrate, concentrate reenters closed-loop path by circulating pump effect, constantly through main heat exchanger and separator flash separation effect, finally reach hypersaturated state and pump into cooler crystallizer from separator and carry out crystallization.
Preferred scheme is had as one of the present utility model, described chilled water tank is provided with coolant outlet, coolant outlet is connected on preheater after a distilled water pump, and the cooling water that chilled water tank is discharged provides heat exchange thermal source through preheater, and the cooling water after heat exchange is from the pollution-free discharge of preheater.
Have preferred scheme as one of the present utility model, connected by conveying pipeline between described material buffer tank and preheater, conveying pipeline is provided with feed pump, and material exports from material buffer tank, pumps into preheater carry out preheating through feed pump.
Have preferred scheme as one of the present utility model, described sedimentator device and be provided with second servo loop between separator, second servo loop is provided with mother liquor pump, and the mother liquor obtained after sedimentator is pumped in separator through mother liquor and circulates.
Compared to existing technology, the beneficial effects of the utility model are: sodium nitrate solution evaporation crystallization equipment described in the utility model instead of traditional steam-heated evaporation and crystallization mode, adopt the indirect steam that compressor compresses cooler crystallizer gives off, use the indirect steam after compression as heating steam, and the circulation of equipment self is achieved by arranging loop, accomplish without the need to raw Steam Heating, without the need to condensing plant, only need a small amount of electric energy just can reach the effect of good evaporation, thus reduce costs in sodium nitrate solution processing procedure, economize energy opens a new way.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred embodiment.
Detailed description of the invention
As shown in Figure 1, sodium nitrate solution evaporation crystallization equipment described in the utility model, it comprises preheating device, vaporising device and Crystallization Separation device;
Described preheating device comprises material buffer tank 1, preheater 3, and material buffer tank 1 is connected by one section of conveying pipeline with preheater 3, described conveying pipeline is provided with feed pump 2;
Described vaporising device comprises main heat exchanger 4, separator 5, vapour compression machine 6 and chilled water tank 8; The feed end of described main heat exchanger 4 connects the discharge end of preheater 3; Separator 5 is connected with main heat exchanger 4 and forms closed-loop path, described closed-loop path is provided with circulating pump 7, concentrate after separator 5 is separated is entered into separator 5 again after being entered by circulating pump 7 in main heat exchanger 4 and evaporating and isolates concentrate, and concentrate is circulated between main heat exchanger 4 and separator 5 by closed-loop path; The steam (vapor) outlet of described separator 5 connects the air inlet of vapour compression machine 6 by one section of appendix, the gas outlet of vapour compression machine 6 is communicated with main heat exchanger 4, and the condensation-water drain of main heat exchanger 4 connects chilled water tank 8 by water-supply-pipe;
Described Crystallization Separation device comprises crystallizer 12, centrifuge apparatus 13, and crystallizer 12 and centrifuge apparatus 13 are connected to the discharge end of separator in turn by a discharging pump 11.
Adopt the technique of device condensing crystallizing sodium nitrate solution described in the utility model as follows: the temperature in material buffer tank 1 is room temperature, sodium nitrate solution stoste pumps into preheater 3 through feed pump 2 and produces heat exchange with cooling water in preheater 3, and after preheater 3, temperature rises; Sodium nitrate solution after preheating enters into main heat exchanger 4, and circulated in main heat exchanger 4 and separator 5 by circulating pump 7, with heating steam heat exchange in main heat exchanger 4, the sodium nitrate solution absorbing heat enters flash distillation in separator 5, and isolate indirect steam and concentrate, indirect steam enters vapour compression machine 6 from separator 5 steam (vapor) outlet, and after the adiabatic compression of vapour compression machine 6, temperature and pressure gets a promotion; Indirect steam after increasing temperature and pressure enters main heat exchanger 4 and sodium nitrate solution heat exchange as heating steam, is condensed into water, and enters chilled water tank 8 after heat release; The sodium nitrate solution absorbing heat enters flash distillation in separator 5 and isolates indirect steam and concentrate, pump into stirred crystallization in crystallizer 12 through discharging pump 11 when the concentration of sodium nitrate solution reaches more than 35%, then isolate sodium nitrate solution crystal through crystallizer 12 and centrifuge apparatus 13; Can reuse or qualified discharge from the last cooling water out of preheater.
The utility model can also pass through following scheme implementation:
As the preferred scheme of one of the present utility model, described chilled water tank 8 is provided with coolant outlet, and the water inlet end of a distilled water pump 9 is connected to the coolant outlet of chilled water tank 8 by water-supply-pipe, and the water side of distilled water pump 9 is connected on preheater 3.Because water out also has uniform temperature from chilled water tank 8, if directly discharge can cause the waste of thermal source, the water in chilled water tank 8 is incorporated in preheater 3, as the thermal source of preheater 3, thus the object making full use of heat can be reached.
As the preferred scheme of one of the present utility model, described centrifuge apparatus 13 and be provided with loop between separator 5, loop is provided with mother liquor pump 14, the mother liquor obtained after centrifuge through mother liquor pump 14 be sent in separator 5 circulate.Mother liquor after separation is saturated sodium nitrate solution, direct discharge may cause sodium nitrate solution to reclaim not exclusively, discharge after stain environment, therefore after designing second servo loop, mother liquor enters into separator by second servo loop, and then between separator and main heat exchanger, circulation is concentrated, to reach after predetermined concentration Crystallization Separation again, circulation like this, finally realizes the process completely of sodium nitrate solution.
As the preferred scheme of one of the present utility model, the condensation-water drain of described preheater 3 is connected with outlet pipe.The condensed water eventually passed after preheater hot exchange is discharged through outlet pipe.
Above-mentioned embodiment is only preferred embodiment of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (5)
1. a sodium nitrate solution evaporation crystallization equipment, comprises preheating device, vaporising device and Crystallization Separation device, it is characterized in that:
Described preheating device comprises material buffer tank and preheater, and sodium nitrate solution enters material buffer tank and pumps in preheater through conveying pipeline and carry out preheating;
Described vaporising device comprises main heat exchanger, separator, vapour compression machine and chilled water tank, wherein, the discharge end of preheater is connected on the feed end of main heat exchanger after condensing heat exchanger, main heat exchanger is connected with separator and forms closed-loop path, sodium nitrate solution after preheating in closed-loop path cocycle through main heat exchanger and separator, constantly isolate the concentrate of steam and high saturation, between the steam (vapor) outlet of described separator and main heat exchanger, also vapour compression machine is set, the steam that separator is separated enters vapour compression machine adiabatic compression, reenter main heat exchanger cycle heat exchange, steam-condensation Cheng Shuihou enters chilled water tank, chilled water tank is connected on the condensation-water drain of main heat exchanger by water-supply-pipe,
Described Crystallization Separation device comprises cooler crystallizer and sedimentator device, cooler crystallizer and sedimentator device are connected to the discharge end of separator in turn by a discharging pump, the concentrate reaching hypersaturated state pumps into cooler crystallizer crystallization, and isolates crystal through sedimentator device.
2. a kind of sodium nitrate solution evaporation crystallization equipment according to claim 1, it is characterized in that: described main heat exchanger and separator connect and compose a closed-loop path by pipeline, pipeline is provided with a circulating pump, sodium nitrate solution after preheating enters main heat exchanger and heating steam heat exchange, the sodium nitrate solution obtaining heat enters separator flash separation and goes out indirect steam and concentrate, concentrate reenters closed-loop path by circulating pump effect, constantly through main heat exchanger and separator flash separation effect, finally reach hypersaturated state to pump into cooler crystallizer from separator and carry out crystallization.
3. a kind of sodium nitrate solution evaporation crystallization equipment according to claim 1, it is characterized in that: described chilled water tank is provided with coolant outlet, coolant outlet is connected on preheater after a distilled water pump, the cooling water that chilled water tank is discharged provides heat exchange thermal source through preheater, and the cooling water after heat exchange is from the pollution-free discharge of preheater.
4. a kind of sodium nitrate solution evaporation crystallization equipment according to claim 1, it is characterized in that: connected by conveying pipeline between described material buffer tank and preheater, conveying pipeline is provided with feed pump, and sodium nitrate solution exports from material buffer tank, pumps into preheater carry out preheating through feed pump.
5. a kind of sodium nitrate solution evaporation crystallization equipment according to claim 1, it is characterized in that: between described sedimentator device and separator, be provided with loop, loop is provided with mother liquor pump, and the mother liquor obtained after sedimentator is pumped in separator through mother liquor and circulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520535027.0U CN204891247U (en) | 2015-07-22 | 2015-07-22 | Sodium nitrate solution evaporation crystallization equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520535027.0U CN204891247U (en) | 2015-07-22 | 2015-07-22 | Sodium nitrate solution evaporation crystallization equipment |
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| Publication Number | Publication Date |
|---|---|
| CN204891247U true CN204891247U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520535027.0U Active CN204891247U (en) | 2015-07-22 | 2015-07-22 | Sodium nitrate solution evaporation crystallization equipment |
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| CN (1) | CN204891247U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422385A (en) * | 2016-09-26 | 2017-02-22 | 深圳市捷晶能源科技有限公司 | Energy-saving vaporization system for calcium nitrate solution and control method thereof |
| CN111155170A (en) * | 2020-01-09 | 2020-05-15 | 陕西华燕航空仪表有限公司 | Preparation method and application of sodium nitrate crystal |
| CN113998825A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium nitrate evaporative crystallization device and application method thereof |
| CN114044597A (en) * | 2021-10-12 | 2022-02-15 | 铜陵有色金属集团股份有限公司 | Sodium sulfate evaporation crystallization device and use method thereof |
-
2015
- 2015-07-22 CN CN201520535027.0U patent/CN204891247U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422385A (en) * | 2016-09-26 | 2017-02-22 | 深圳市捷晶能源科技有限公司 | Energy-saving vaporization system for calcium nitrate solution and control method thereof |
| CN111155170A (en) * | 2020-01-09 | 2020-05-15 | 陕西华燕航空仪表有限公司 | Preparation method and application of sodium nitrate crystal |
| CN113998825A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium nitrate evaporative crystallization device and application method thereof |
| CN114044597A (en) * | 2021-10-12 | 2022-02-15 | 铜陵有色金属集团股份有限公司 | Sodium sulfate evaporation crystallization device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000, A1701-1704, Building 12, Shenzhen Bay Science and Technology Ecological Park, No. 18 Keji South Road, Gaoxin District, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Jiejing Technology Co.,Ltd. Country or region after: China Address before: 518000 zone B, floor 2, building A3, Shenzhen digital technology park, Gaoxin South 7th Road, high tech Zone South, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN CRYSTAL ENERGY TECH Co.,Ltd. Country or region before: China |