CN206138765U - Energy -conserving vaporization system of calcium nitrate solution - Google Patents
Energy -conserving vaporization system of calcium nitrate solution Download PDFInfo
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- CN206138765U CN206138765U CN201621081106.XU CN201621081106U CN206138765U CN 206138765 U CN206138765 U CN 206138765U CN 201621081106 U CN201621081106 U CN 201621081106U CN 206138765 U CN206138765 U CN 206138765U
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- separator
- pump
- heat exchanger
- calcium nitrate
- energy
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The utility model discloses an energy -conserving vaporization system of calcium nitrate solution, including preheating device, evaporation plant, crystal separator, controlling means. Energy -conserving vaporization system of calcium nitrate solution pass through the self -loopa between main heat exchanger and the separator, adopt the compressor to compress the flash steam that the separator discharged out, to compress flash steam after the intensification as heating steam, and the circulation of equipment self has been realized through setting up the return circuit, steam has been accomplished need not to give birth to, need not condensation device, only need a small amount of electric energy just to realize good evaporation effect, thereby energy saving in reaching that calcium nitrate solution is concentrated and handling, the cost is lowered, environmental improvement, and the efficiency is enhanced.
Description
Technical field
This utility model is related to the evaporative crystallization technique field of solution, in particular it relates to a kind of energy-conservation of calcium nitrate solution
Vapo(u)rization system.
Background technology
Calcium nitrate solution condensing crystallizing generally adopts evaporation technology, and the widely used steam of traditional evaporation technology is used as main
The energy, not only large steam consumption, and the boiler plant used by steam source takes up an area big wide, risk, pollution weight, running cost
It is high.With gradually high and integrated environment the significantly deterioration of steam price in recent years, the energy consumption cost burden of enterprise's production plus
Weight, profit heavy compression, nor meet environmental protection, energy-saving, reduces cost the development general trend of events.
Utility model content
The purpose of this utility model is the energy-conservation vapo(u)rization system for providing a kind of calcium nitrate solution, to solve above-mentioned background skill
The problem proposed in art.
For achieving the above object, this utility model provides following technical scheme：
A kind of energy-conservation vapo(u)rization system of calcium nitrate solution, including preheating device, vaporising device, Crystallization Separation device, control
Device；The preheating device includes material buffer tank, preheater, and material buffer tank is connected with preheater by one section of conveying pipeline,
Feed pump is installed on the conveying pipeline；The condensation-water drain connection drain pipe of the preheater；The vaporising device includes master
Heat exchanger, separator, vapour compression machine and condensate water pot；The feed end of the main heat exchanger connects the discharge end of preheater；
Separator is connected and is formed closed-loop path with main heat exchanger, circulating pump is provided with the closed-loop path, after separated device is separated
Concentrated solution exchanged heat in main heat exchanger by circulating pump after enter back into and evaporate in separator and isolate concentrated solution, it is dense
Contracting liquid is circulated by closed-loop path between main heat exchanger and separator；The steam (vapor) outlet of the separator passes through one section of appendix
The air inlet of connection vapour compression machine, the gas outlet of vapour compression machine connects with main heat exchanger, the condensation-water drain of main heat exchanger
Condensate water pot is connected by water-supply-pipe；The Crystallization Separation device includes crystallizer, centrifuge apparatus, and crystallizer and centrifuge are filled
Put the discharge end for being connected to separator in turn by a discharging pump；The condensate water pot is provided with condensation-water drain, a distilled water pump
Water inlet end the condensation-water drain of condensate water pot is connected to by water-supply-pipe, the water side of distilled water pump is connected on preheater；
Second servo loop is provided between the centrifuge apparatus and separator, second servo loop is provided with mother solution pump, obtains after centrifuge
Mother solution is pumped in separator through mother solution and circulates；The material buffer tank, preheater, feed pump, main heat exchanger, separation
Connected relation is pressed between device, vapour compression machine, condensate water pot, circulating pump, crystallizer, centrifuge apparatus, discharging pump by pipeline
It is detachably connected；The control device includes control circuit, sensor, and the data such as liquid level, temperature conditionss are entered by sensor
Row monitoring, by control circuit each pump, centrifuge apparatus operation are automatically controlled, and realize full-range automatization.
Preferably, the separator is to be adapted to solid-liquid separation, the vaporizer of crystal growth, is provided with two-stage foam removal structure, with
Prevent foam from producing excessive, into admission line and vapour compression machine, it is ensured that system stability Effec-tive Function.
Preferably, it is described to be detachably connected as flange connection, make whole system be easy to assembly or disassembly.
Preferably, the sensor includes separation liquid level sensor, the temperature sensor in separator, the control
Circuit respectively with separate liquid level sensor, temperature sensor, feed pump, discharging pump connection.
Preferably, the sensor includes the condensation liquid level sensor in condensate water pot, the control circuit difference
It is connected with condensation liquid level sensor, distilled water pump.
For the purpose of utility model is better achieved, here, a kind of energy-conservation evaporation system of calcium nitrate solution is also provided
The control method of system, comprises the following steps：
S1. vaporising device separator liquid level is monitored by separation liquid level sensor, is controlled in separator low liquid level
Circuit automatically controls unlatching feed pump, and when separator liquid level is high feed pump is closed, it is ensured that separator liquid level maintains stable region
Between；
S2. calcium nitrate solution temperature in separator is monitored by temperature sensor, when temperature reaches to a certain degree,
Then represent solution concentration and reach setting value, by control circuit automatically control discharging pump open, the sedimentation crystal grain of separator bottom and
Supersaturated solution Jing discharging pumps pump into crystallizer, and when solution temperature is reduced to a certain extent in separator, control circuit is automatic
Control discharging pump is closed, and by the keying of discharging pump, is timely entered the sedimentation crystal grain in separator and continue in crystallizer crystallization；
S3. condensate water pot liquid level is monitored by condensation liquid level sensor, the control circuit in condensate water pot high level
Unlatching distilled water pump is automatically controlled, in condensate water pot low liquid level distilled water pump is automatically switched off, in time discharge condensed water, prevented
Overflow；
Preferably, the control circuit control feed pump is opened, and from material buffer tank to preheater nitric acid calcium stock solution is pumped
When, control circuit controls distilled water pump and opens simultaneously, and from condensate water pot to preheater the condensed water with waste heat is pumped, and makes calcium nitrate
Stock solution is fully exchanged heat with condensed water.
Preferably, the level parameter of the control circuit, temperature of charge parameter can be adjusted, different dense so as to meet
Degree, the crystallization of the calcium nitrate solution of quality need.
Compared with prior art, the beneficial effects of the utility model are：The section of calcium nitrate solution described in the utility model
Energy vapo(u)rization system instead of traditional steam-heated evaporation mode, by the self-loopa between main heat exchanger and separator, adopt
The indirect steam given off with compressor compresses separator, will compression heat up after indirect steam as plus vapourss, and pass through
The circulation that loop realizes equipment itself is set, has accomplished, without the need for raw steam, without the need for condensing plant, only to need a small amount of electric energy just real
Now good evaporation effect, so as to open a new way for calcium nitrate solution concentration reduces cost, energy saving, reaches
To the reuse energy, the purpose of evaporation and concentration, so as to energy saving, reduces cost, improve environment, improve efficiency.
Description of the drawings
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the block diagram of the control device of this utility model embodiment；
Wherein：1. material buffer tank, 2. feed pump, 3. preheater, 4. main heat exchanger, 5. separator, 6. vapour compression machine,
7. condensate water pot, 8 distilled water pumps, 9. circulating pump, 10. discharging pump, 11. crystallizers, 12. centrifuge apparatus, 13. mother solution pumps, 14.
Flange connects.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
With reference to shown in Fig. 1, Fig. 2, a kind of energy-conservation vapo(u)rization system of calcium nitrate solution, including preheating device, vaporising device, knot
Brilliant segregation apparatuss, control device；The preheating device includes material buffer tank 1, preheater 3, material buffer tank 1 and preheater 3
Connected by one section of conveying pipeline, feed pump 2 is installed on the conveying pipeline；The vaporising device includes main heat exchanger 4, separator
5th, vapour compression machine 6 and condensate water pot 7；The feed end of the main heat exchanger 4 connects the discharge end of preheater 3；Separator 5 with
Main heat exchanger 4 connects and is formed closed-loop path, and circulating pump 9, the concentration after the separation of separated device 5 are provided with the closed-loop path
Liquid is entered back into after being evaporated in main heat exchanger 4 by circulating pump 9 and concentrated solution is isolated in separator 5, and concentrated solution passes through
Circulate between main heat exchanger 4 and separator 5 closed-loop path；The steam (vapor) outlet of the separator 5 is by one section of appendix connection
The air inlet of vapour compression machine 6, the gas outlet of vapour compression machine 6 connects with main heat exchanger 4, the condensation-water drain of main heat exchanger 4
Condensate water pot 7 is connected by water-supply-pipe；The Crystallization Separation device includes crystallizer 11, centrifuge apparatus 12, the He of crystallizer 11
Centrifuge apparatus 12 are connected to the discharge end of separator 5 in turn by a discharging pump 10.The material buffer tank 1, preheater 3,
Feed pump 2, main heat exchanger 4, separator 5, vapour compression machine 6, condensate water pot 7, circulating pump 9, crystallizer 11, centrifuge apparatus
12nd, it is detachably connected by pipeline by connected relation between discharging pump 10；The control device includes control circuit, sensor,
The data such as liquid level, temperature conditionss are monitored by sensor, each pump, centrifuge apparatus 12 are automatically controlled by control circuit and is transported
OK, full-range automatization is realized.
The separator 5 is provided with two-stage foam removal structure to be adapted to solid-liquid separation, the vaporizer of crystal growth, to prevent bubble
Foam is produced excessively, into admission line and vapour compression machine 6, it is ensured that system stability Effec-tive Function.
It is described to be detachably connected as flange connection 14, make whole system be easy to assembly or disassembly.The condensate water pot 7 is provided with
Condensation-water drain, the water inlet end of a distilled water pump 8 is connected to the condensation-water drain of condensate water pot 7, distilled water pump 8 by water-supply-pipe
Water side be connected on preheater 3.Because the water from condensate water pot 7 out also has uniform temperature, if being expelled directly out meeting
Cause the waste of thermal source, the water in condensate water pot 7 is incorporated in preheater 3, can be as the thermal source of preheater 3, so as to reach
To the purpose for making full use of heat.
Loop is provided between the centrifuge apparatus 12 and separator 5, loop is provided with mother solution pump 13, obtains after centrifuge
Mother solution through mother solution pump 13 be sent in separator 5 circulate.Mother solution after separation is saturation calcium nitrate solution, by design the
Secondary circuit, mother solution is re-entered in separator 5 by second servo loop, is then circulated between separator 5 and main heat exchanger 4 dense
Contracting, reaches after predetermined concentration Crystallization Separation again, and so on circulates, and finally realizes the recovery completely of calcium nitrate.It is described pre-
The condensation-water drain of hot device 3 is connected with outlet pipe.Eventually pass the condensed water after the heat exchange of preheater 3 to discharge through outlet pipe.
With reference to shown in Fig. 2, the sensor includes separation liquid level sensor, the temperature sensor in separator 5, institute
State control circuit respectively with separate liquid level sensor, temperature sensor, feed pump 2, discharging pump 10 and connect.The sensor includes
Condensation liquid level sensor in condensate water pot 7, the control circuit connects respectively with condensation liquid level sensor, distilled water pump 8
Connect.
The technique for processing calcium nitrate solution using system described in the utility model is as follows：Temperature in material buffer tank 1
For room temperature, nitric acid calcium stock solution Jing feed pumps 2 pump into preheater 3 and produce heat exchange with condensed water in preheater 3, after preheater 3
Temperature rises；Calcium nitrate solution after preheating is entered in main heat exchanger 4, and by circulating pump 9 in main heat exchanger 4 and separator
Circulate in 5, with heating steam heat-exchanging in main heat exchanger 4, the calcium nitrate solution for absorbing heat enters flash distillation in separator 5, and
Indirect steam and concentrated solution are isolated, indirect steam enters vapour compression machine 6, Jing vapour compression machines 6 from the steam (vapor) outlet of separator 5
Adiabatic compression after, temperature and pressure gets a promotion；Indirect steam after increasing temperature and pressure as plus vapourss enter main heat exchanger 4
With calcium nitrate solution heat exchange, water is condensed into after heat release, and enters condensate water pot 7；The calcium nitrate solution for absorbing heat enters separation
Flash distillation and indirect steam and concentrated solution are isolated in device 5, the concentration of calcium nitrate solution reaches Jing when hypersaturated state separates out crystal
Discharging pump 10 pumps into crystallisation by cooling in crystallizer 11, then isolates calcium nitrate through crystallizer 11 and centrifuge apparatus 12 brilliant
Body；Can be with reuse or qualified discharge from the last condensed water out of preheater 3.
For the purpose of utility model is better achieved, here, a kind of energy-conservation evaporation system of calcium nitrate solution is also provided
The control method of system, comprises the following steps：
S1. the liquid level of vaporising device separator 5 is monitored by separation liquid level sensor, in the low liquid level time control of separator 5
Circuit processed automatically controls unlatching feed pump 2, feed pump 2 is closed when the liquid level of separator 5 is high, it is ensured that concentrator liquid level is maintained surely
Fixed interval；
S2. calcium nitrate solution temperature in separator 5 is monitored by temperature sensor, when temperature reaches to a certain degree
When, then represent solution concentration and reach setting value, discharging pump 10 is automatically controlled by control circuit and is opened, the sedimentation of the bottom of separator 5
Crystal grain and supersaturated solution Jing discharging pumps 10 pump into crystallizer 11, when solution temperature is reduced to a certain extent in separator 5, control
Circuit processed automatically controls discharging pump 10 and closes, and by the keying of discharging pump 10, makes the sedimentation crystal grain in separator 5 timely enter knot
Continue to crystallize in brilliant device 11；
S3. the liquid level of condensate water pot 7 is monitored by condensation liquid level sensor, electricity is controlled in 7 high level of condensate water pot
Road automatically controls unlatching distilled water pump 8, and in 7 low liquid level of condensate water pot distilled water pump 8 is automatically switched off, and in time arranges condensed water
Go out, prevent from overflowing；
Further, the control circuit control feed pump 2 is opened, and from material buffer tank 1 to preheater 3 calcium nitrate is pumped
During stock solution, control circuit controls distilled water pump 8 and opens simultaneously, and from condensate water pot 7 to preheater 3 condensed water with waste heat is pumped,
Nitric acid calcium stock solution is set fully to be exchanged heat with condensed water.
Further, the level parameter of the control circuit, temperature of charge parameter can be adjusted, different dense so as to meet
Degree, the crystallization of the calcium nitrate solution of quality need.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. the energy-conservation vapo(u)rization system of a kind of calcium nitrate solution, it is characterised in that including preheating device, vaporising device, Crystallization Separation
Device, control device；The preheating device includes material buffer tank, preheater, and material buffer tank is defeated by one section with preheater
Expects pipe connects, and on the conveying pipeline feed pump is provided with；The condensation-water drain connection drain pipe of the preheater；The evaporation dress
Put including main heat exchanger, separator, vapour compression machine and condensate water pot；The feed end connection preheater of the main heat exchanger
Discharge end；Separator is connected and is formed closed-loop path with main heat exchanger, and circulating pump, separated device are provided with the closed-loop path
Concentrated solution after separation enter back into after being exchanged heat in main heat exchanger by circulating pump evaporate in separator and isolate it is dense
Contracting liquid, concentrated solution is circulated by closed-loop path between main heat exchanger and separator；The steam (vapor) outlet of the separator passes through one
Section appendix connects the air inlet of vapour compression machine, and the gas outlet of vapour compression machine connects with main heat exchanger, main heat exchanger it is cold
Solidifying water out connects condensate water pot by water-supply-pipe；The Crystallization Separation device include crystallizer, centrifuge apparatus, crystallizer and
Centrifuge apparatus are connected to the discharge end of separator in turn by a discharging pump；The condensate water pot is provided with condensation-water drain, and one
The water inlet end of distilled water pump is connected to the condensation-water drain of condensate water pot by water-supply-pipe, and the water side of distilled water pump is connected to pre-
On hot device；Second servo loop is provided between the centrifuge apparatus and separator, second servo loop is provided with mother solution pump, after centrifuge
The mother solution for obtaining is pumped in separator through mother solution and circulates；The material buffer tank, preheater, feed pump, main heat exchanger,
Pass through by connected relation between separator, vapour compression machine, condensate water pot, circulating pump, crystallizer, centrifuge apparatus, discharging pump
Pipeline is detachably connected；The control device includes control circuit, sensor, by sensor to liquid level, the number of temperature conditionss
According to being monitored, each pump, centrifuge apparatus operation are automatically controlled by control circuit, realize full-range automatization.
2. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 1, it is characterised in that the separator is suitable
Solid-liquid separation, the vaporizer of crystal growth, are provided with two-stage foam removal structure.
3. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 1 and 2, it is characterised in that described detachably to connect
Flange connection is connected in, makes whole system be easy to assembly or disassembly.
4. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 3, it is characterised in that the sensor includes setting
Separation liquid level sensor in separator, temperature sensor, the control circuit respectively with separate liquid level sensor, temperature pass
Sensor, feed pump, discharging pump connection.
5. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 4, it is characterised in that the sensor includes setting
Condensation liquid level sensor in condensate water pot, the control circuit is connected respectively with condensation liquid level sensor, distilled water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621081106.XU CN206138765U (en) | 2016-09-26 | 2016-09-26 | Energy -conserving vaporization system of calcium nitrate solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621081106.XU CN206138765U (en) | 2016-09-26 | 2016-09-26 | Energy -conserving vaporization system of calcium nitrate solution |
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| CN206138765U true CN206138765U (en) | 2017-05-03 |
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Cited By (3)
| 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 |
| CN109775789A (en) * | 2019-03-18 | 2019-05-21 | 齐鲁工业大学 | A kind of heat-tube vacuum drying system and its application |
| CN111547794A (en) * | 2020-04-22 | 2020-08-18 | 杭州科晟能源技术有限公司 | Low-temperature vacuum evaporation wastewater treatment system |
-
2016
- 2016-09-26 CN CN201621081106.XU patent/CN206138765U/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 |
| CN109775789A (en) * | 2019-03-18 | 2019-05-21 | 齐鲁工业大学 | A kind of heat-tube vacuum drying system and its application |
| CN109775789B (en) * | 2019-03-18 | 2022-06-21 | 齐鲁工业大学 | Heat pipe vacuum drying system and application thereof |
| CN111547794A (en) * | 2020-04-22 | 2020-08-18 | 杭州科晟能源技术有限公司 | Low-temperature vacuum evaporation wastewater treatment system |
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