CN106422385A - Energy-saving vaporization system for calcium nitrate solution and control method thereof - Google Patents
Energy-saving vaporization system for calcium nitrate solution and control method thereof Download PDFInfo
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- CN106422385A CN106422385A CN201610850673.5A CN201610850673A CN106422385A CN 106422385 A CN106422385 A CN 106422385A CN 201610850673 A CN201610850673 A CN 201610850673A CN 106422385 A CN106422385 A CN 106422385A
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- separator
- pump
- liquid level
- calcium nitrate
- energy
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- ZCCIPPOKBCJFDN-UHFFFAOYSA-N Calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000009834 vaporization Methods 0.000 title abstract 5
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 239000000243 solution Substances 0.000 claims description 49
- 239000007788 liquid Substances 0.000 claims description 45
- 238000007599 discharging Methods 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 20
- 239000012153 distilled water Substances 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 17
- 238000004134 energy conservation Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000002425 crystallisation Methods 0.000 claims description 13
- 230000005712 crystallization Effects 0.000 claims description 13
- 239000010413 mother solution Substances 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 239000011550 stock solution Substances 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- WLQXPAUZYVXSNE-UHFFFAOYSA-N [Ca].O[N+]([O-])=O Chemical compound [Ca].O[N+]([O-])=O WLQXPAUZYVXSNE-UHFFFAOYSA-N 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000006200 vaporizer Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims 1
- 230000036186 satiety Effects 0.000 claims 1
- 235000019627 satiety Nutrition 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000007701 flash-distillation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
- B01D9/0031—Evaporation of components of the mixture to be separated by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0063—Control or regulation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/36—Nitrates
-
- 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
-
- 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 invention discloses an energy-saving vaporization system for a calcium nitrate solution. The energy-saving vaporization system comprises a preheating device, an evaporating device, a crystal separating device and a control device. According to the energy-saving vaporization system for the calcium nitrate solution and a control method thereof provided by the invention, through the self-circulation between a main heat exchanger and a separator, a compressor is adopted for compressing the secondary steam discharged by the separator, the compressed and heated secondary steam serves as the heating steam, and a loop is arranged for realizing the circulation of the equipment, so that an excellent vaporization effect can be achieved without raw steam or condensing equipment but only little electric power, and thus the purposes of saving energy, reducing cost, improving environment and increasing efficiency in the concentration treatment process of the calcium nitrate solution can be achieved.
Description
Technical field
A kind of the present invention relates to evaporative crystallization technique field of solution, in particular it relates to the energy-conservation evaporation of calcium nitrate solution
System and its control method.
Background technology
Calcium nitrate solution condensing crystallizing generally adopts evaporation technology, and traditional widely used steam of evaporation technology is as main
The energy, not only large steam consumption, and also the boiler plant used by steam source takes up an area, and wide, risk is big, pollution weight, running cost
High.With the significantly deterioration of the gradually high of steam price in recent years and integrated environment, the energy consumption cost burden that enterprise produces adds
Weight, profit heavy compression, nor meet environmental protection, energy-saving, reduces cost the development general trend of events.
Content of the invention
It is an object of the invention to provide a kind of energy-conservation vapo(u)rization system of calcium nitrate solution and its control method, on solving
State the problem proposing in background technology.
For achieving the above object, the present invention 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；Described preheating device includes material buffer tank, preheater, and material buffer tank is connected by one section of conveying pipeline with preheater,
On described conveying pipeline, feed pump is installed；The condensation-water drain of described preheater connects drain pipe；Described vaporising device includes leading
Heat exchanger, separator, vapour compression machine and condensate water pot；The feed end of described main heat exchanger connects the discharge end of preheater；
Separator is connected with main heat exchanger and forms closed-loop path, and described closed-loop path is provided with circulating pump, after separated device separates
Concentrated solution enter to enter back into after heat exchange in main heat exchanger by circulating pump and evaporate in separator and isolate concentrated solution, dense
Contracting liquid is circulated between main heat exchanger and separator by closed-loop path；The steam (vapor) outlet of described separator passes through one section of appendix
Connect the air inlet of vapour compression machine, the gas outlet of vapour compression machine is connected with main heat exchanger, the condensation-water drain of main heat exchanger
Condensate water pot is connected by water-supply-pipe；Described Crystallization Separation device includes crystallizer, centrifuge apparatus, crystallizer and centrifuge dress
Put the discharge end being connected to separator by a discharging pump in turn；Described condensate water pot is provided with condensation-water drain, a distilled water pump
Water inlet end be connected to the condensation-water drain of condensate water pot by water-supply-pipe, the water side of distilled water pump is connected on preheater；
It is provided with second servo loop, second servo loop is provided with mother solution pump, obtains after centrifuge between described centrifuge apparatus and separator
Mother solution is pumped into circulation in separator through mother solution；Described material buffer tank, preheater, feed pump, main heat exchanger, separation
Press connected relation between device, vapour compression machine, condensate water pot, circulating pump, crystallizer, centrifuge apparatus, discharging pump and pass through pipeline
It is detachably connected；Described control device includes control circuit, sensor, by sensor, the data such as liquid level, temperature conditionss is entered
Row monitoring, automatically controls each pump by control circuit, centrifuge apparatus are run, and realize full-range automatization.
Preferably, described separator is to be suitable for solid-liquid separation, the vaporizer of crystal growth, is provided with two-stage foam removal structure, with
Prevent foam from producing excessive, enter admission line and vapour compression machine it is ensured that system stability Effec-tive Function.
Preferably, the described flange that is detachably connected as connects, and makes whole system be easy to assembly or disassembly.
Preferably, described sensor includes separation liquid level sensor in separator, temperature sensor, described control
Circuit respectively with separate liquid level sensor, temperature sensor, feed pump, discharging pump connect.
Preferably, described sensor includes the condensation liquid level sensor in condensate water pot, and described control circuit is respectively
It is connected with condensation liquid level sensor, distilled water pump.
For the purpose of invention is better achieved, here, also provide a kind of energy-conservation vapo(u)rization system of described calcium nitrate solution
Control method, comprises the following steps：
S1. by separation liquid level sensor, vaporising device separator liquid level is monitored, controls in separator low liquid level
Circuit automatically controls unlatching feed pump, closes feed pump when separator liquid level is high it is ensured that separator liquid level maintains stable region
Between；
S2. by temperature sensor, calcium nitrate solution temperature in separator is monitored, 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 pumps into crystallizer through discharging pump, and when in separator, solution temperature reduces to a certain extent, control circuit is automatic
Control discharging pump to close, by the keying of discharging pump, so that the sedimentation crystal grain in separator is timely entered in crystallizer and continue crystallization；
S3. by condensation liquid level sensor, condensate water pot liquid level is monitored, the control circuit in condensate water pot high level
Automatically control unlatching distilled water pump, be automatically switched off distilled water pump in condensate water pot low liquid level, in time condensed water discharged, prevent
Overflow；
Preferably, described control circuit controls feed pump to open, and pumps nitric acid calcium stock solution from material buffer tank to preheater
When, control circuit controls distilled water pump to open simultaneously, pumps the condensed water with waste heat from condensate water pot to preheater, makes calcium nitrate
Stock solution and condensed water carry out abundant heat exchange.
Preferably, the level parameter of described control circuit, temperature of charge parameter can be adjusted, thus meeting different dense
Degree, the crystallization of the calcium nitrate solution of quality need.
Compared with prior art, the invention has the beneficial effects as follows：The energy-conservation evaporation system of calcium nitrate solution of the present invention
System and its control method instead of traditional steam-heated evaporation mode, by certainly following between main heat exchanger and separator
Ring, the indirect steam being given off using compressor compresses separator, using the indirect steam after compression intensification as heating steam, and
Achieve the circulation of equipment itself by arranging loop, accomplished to give birth to steam, without condensing plant, the only a small amount of electric energy of need
Just realize good evaporation effect, thus opening a new way for calcium nitrate solution concentration reduces cost, energy saving
Footpath, reaches the purpose of the reuse energy, evaporation and concentration, thus energy saving, reduces cost, improve environment, improve efficiency.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the block diagram of the control device of the embodiment of the present invention；
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 the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
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；Described preheating device includes material buffer tank 1, preheater 3, material buffer tank 1 and preheater 3
Connected by one section of conveying pipeline, described conveying pipeline is provided with feed pump 2；Described vaporising device includes main heat exchanger 4, separator
5th, vapour compression machine 6 and condensate water pot 7；The feed end of described main heat exchanger 4 connects the discharge end of preheater 3；Separator 5 with
Main heat exchanger 4 connects and forms closed-loop path, and described closed-loop path is provided with circulating pump 9, the concentration after separated device 5 separation
Liquid enters by circulating pump 9 to enter back into after evaporating in main heat exchanger 4 isolates concentrated solution in separator 5, concentrated solution passes through
Closed-loop path is circulated between main heat exchanger 4 and separator 5；The steam (vapor) outlet of described separator 5 passes through one section of appendix and connects
The air inlet of vapour compression machine 6, the gas outlet of vapour compression machine 6 is connected with main heat exchanger 4, the condensation-water drain of main heat exchanger 4
Condensate water pot 7 is connected by water-supply-pipe；Described Crystallization Separation device includes crystallizer 11, centrifuge apparatus 12, crystallizer 11 He
Centrifuge apparatus 12 are connected to the discharge end of separator 5 in turn by a discharging pump 10.Described 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；Described control device includes control circuit, sensor,
By sensor, the data such as liquid level, temperature conditionss are monitored, each pump are automatically controlled by control circuit, centrifuge apparatus 12 are transported
OK, realize full-range automatization.
Described separator 5 is to be suitable for solid-liquid separation, the vaporizer of crystal growth, is provided with two-stage foam removal structure, to prevent from steeping
Foam produces excessive, enters admission line and vapour compression machine 6 it is ensured that system stability Effec-tive Function.
The described flange that is detachably connected as connects 14, makes whole system be easy to assembly or disassembly.Described 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 from condensate water pot 7, water out also has uniform temperature, if being expelled directly out meeting
Lead to 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, thus reaching
To the purpose making full use of heat.
It is provided with loop, loop is provided with mother solution pump 13, obtains after centrifuge between described centrifuge apparatus 12 and separator 5
Mother solution be sent in separator 5 circulation through mother solution pump 13.Mother solution after separating is saturation calcium nitrate solution, by design the
Secondary circuit, mother solution is re-entered in separator 5 by second servo loop, then circulates dense between separator 5 and main heat exchanger 4
Contracting, reaches after predetermined concentration Crystallization Separation again, and so on circulates, finally realize the recovery completely of calcium nitrate.Described pre-
The condensation-water drain of hot device 3 is connected with outlet pipe.Eventually pass the condensed water after preheater 3 heat exchange to discharge through outlet pipe.
With reference to shown in Fig. 2, described sensor includes separation liquid level sensor in separator 5, temperature sensor, institute
State control circuit respectively with separate liquid level sensor, temperature sensor, feed pump 2, discharging pump 10 connect.Described sensor includes
Condensation liquid level sensor in condensate water pot 7, described control circuit is respectively with condensation liquid level sensor, distilled water pump 8 even
Connect.
The technique processing calcium nitrate solution using system of the present invention is as follows：Temperature in material buffer tank 1 is room
Temperature, nitric acid calcium stock solution pumps into preheater 3 through feed pump 2 and produces heat exchange, temperature after preheater 3 with condensed water in preheater 3
Rise；Calcium nitrate solution after preheating enters in main heat exchanger 4, and by circulating pump 9 in main heat exchanger 4 and separator 5
Circulation, with heating steam heat-exchanging in main heat exchanger 4, the calcium nitrate solution absorbing heat enters flash distillation in separator 5, and separates
Go out indirect steam and concentrated solution, indirect steam enters vapour compression machine 6 from separator 5 steam (vapor) outlet, exhausted through vapour compression machine 6
After hot compression, temperature and pressure gets a promotion；Indirect steam after increasing temperature and pressure enters main heat exchanger 4 and nitre as heating steam
Sour calcium solution heat exchange, is condensed into water after heat release, and enters condensate water pot 7；The calcium nitrate solution absorbing heat enters in separator 5
Flash distillation simultaneously isolates indirect steam and concentrated solution, and the concentration of calcium nitrate solution reaches hypersaturated state and separates out during crystal through discharging pump
10 pump into crystallisation by cooling in crystallizer 11, be then passed through crystallizer 11 and centrifuge apparatus 12 isolate calcium nitrate crystal；From pre-
Finally condensed water out can be with reuse or qualified discharge for hot device 3.
For the purpose of invention is better achieved, here, also provide a kind of energy-conservation vapo(u)rization system of described calcium nitrate solution
Control method, comprises the following steps：
S1. by separation liquid level sensor, vaporising device separator 5 liquid level is monitored, in separator 5 low liquid level time control
Circuit processed automatically controls unlatching feed pump 2, closes feed pump 2 when separator 5 liquid level is high it is ensured that concentrator liquid level maintains surely
Fixed interval；
S2. by temperature sensor, calcium nitrate solution temperature in separator 5 is monitored, 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 opens, the sedimentation of separator 5 bottom
Crystal grain and supersaturated solution pump into crystallizer 11 through discharging pump 10, when in separator 5, solution temperature reduces to a certain extent, 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 crystallization in brilliant device 11；
S3. by condensation liquid level sensor, condensate water pot 7 liquid level is monitored, controls electricity in condensate water pot 7 high level
Road automatically controls unlatching distilled water pump 8, is automatically switched off distilled water pump 8 in condensate water pot 7 low liquid level, arranges condensed water in time
Go out, prevent from overflowing；
Further, described control circuit controls feed pump 2 to open, and pumps calcium nitrate from material buffer tank 1 to preheater 3
During stock solution, control circuit controls distilled water pump 8 to open simultaneously, pumps the condensed water with waste heat from condensate water pot 7 to preheater 3,
Nitric acid calcium stock solution and condensed water is made to carry out abundant heat exchange.
Further, the level parameter of described control circuit, temperature of charge parameter can be adjusted, thus meeting different dense
Degree, the crystallization of the calcium nitrate solution of quality need.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (8)
1. a kind of energy-conservation vapo(u)rization system of calcium nitrate solution is it is characterised in that include preheating device, vaporising device, Crystallization Separation
Device, control device；Described preheating device includes material buffer tank, preheater, and material buffer tank and preheater are defeated by one section
Expects pipe connects, and described conveying pipeline is provided with feed pump；The condensation-water drain of described preheater connects drain pipe；Described evaporation dress
Put including main heat exchanger, separator, vapour compression machine and condensate water pot；The feed end of described main heat exchanger connects preheater
Discharge end；Separator is connected with main heat exchanger and forms closed-loop path, and described closed-loop path is provided with circulating pump, separated device
Concentrated solution after separating pass through to enter back into after heat exchange in circulating pump entrance main heat exchanger evaporate in separator and isolate dense
Contracting liquid, concentrated solution is circulated between main heat exchanger and separator by closed-loop path；The steam (vapor) outlet of described separator passes through one
Section appendix connects the air inlet of vapour compression machine, and the gas outlet of vapour compression machine connected with main heat exchanger, main heat exchanger cold
Solidifying water out connects condensate water pot by water-supply-pipe；Described Crystallization Separation device includes crystallizer, centrifuge apparatus, crystallizer and
Centrifuge apparatus are connected to the discharge end of separator in turn by a discharging pump；Described 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；It is provided with second servo loop, second servo loop is provided with mother solution pump, after centrifuge between described centrifuge apparatus and separator
The mother solution obtaining is pumped into circulation in separator through mother solution；Described 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；Described control device includes control circuit, sensor, by sensor to the number such as liquid level, temperature conditionss
According to being monitored, each pump is automatically controlled by control circuit, centrifuge apparatus are run, and realize full-range automatization.
2. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 1 is it is characterised in that described 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 is it is characterised in that described detachably connect
It is connected in flange to connect, make whole system be easy to assembly or disassembly.
4. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 3 is it is characterised in that described sensor includes setting
Separation liquid level sensor in separator, temperature sensor, described control circuit respectively with separate liquid level sensor, temperature pass
Sensor, feed pump, discharging pump connect.
5. the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 4 is it is characterised in that described sensor includes setting
Condensation liquid level sensor in condensate water pot, described control circuit is connected with condensation liquid level sensor, distilled water pump respectively.
6. a kind of control method of the energy-conservation vapo(u)rization system of described calcium nitrate solution is it is characterised in that comprise the following steps：
S1. by separation liquid level sensor, vaporising device separator liquid level is monitored, the control circuit in separator low liquid level
Automatically control unlatching feed pump, close feed pump when separator liquid level is high it is ensured that concentrator liquid level maintains stable region；
S2. by temperature sensor, calcium nitrate solution temperature in separator is monitored, when temperature reaches to a certain degree, then generation
Table solution concentration reaches setting value, automatically controls discharging pump unlatching, the sedimentation crystal grain of separator bottom and satiety by control circuit
Pump into crystallizer with solution through discharging pump, when solution temperature reduces to a certain extent in separator, control circuit automatically controls
Discharging pump is closed, and by the keying of discharging pump, so that the sedimentation crystal grain in separator is timely entered in crystallizer and continues crystallization；
S3. by condensation liquid level sensor, condensate water pot liquid level is monitored, in condensate water pot high level, control circuit is automatic
Control and open distilled water pump, be automatically switched off distilled water pump in condensate water pot low liquid level, in time condensed water discharged, prevent from overflowing
Go out.
7. the control method of the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 6 is it is characterised in that described control
Circuit processed controls feed pump to open, and during from material buffer tank to preheater pumping nitric acid calcium stock solution, control circuit controls steaming simultaneously
Distilled water pump is opened, and pumps the condensed water with waste heat from condensate water pot to preheater, so that nitric acid calcium stock solution and condensed water is carried out fully
Heat exchange.
8. the control method of the energy-conservation vapo(u)rization system of calcium nitrate solution according to claim 7 is it is characterised in that described control
The level parameter of circuit processed, temperature of charge parameter can be adjusted, thus meeting the knot of the calcium nitrate solution of variable concentrations, quality
Brilliant needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610850673.5A CN106422385A (en) | 2016-09-26 | 2016-09-26 | Energy-saving vaporization system for calcium nitrate solution and control method thereof |
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| CN201610850673.5A CN106422385A (en) | 2016-09-26 | 2016-09-26 | Energy-saving vaporization system for calcium nitrate solution and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110668518A (en) * | 2019-10-25 | 2020-01-10 | 内蒙古金河环保科技股份有限公司 | Evaporative crystallization process for high-salt water treatment |
| CN114225437A (en) * | 2021-11-01 | 2022-03-25 | 畅庆环保科技(太仓)有限公司 | Automatic control circulating evaporation concentration device and process |
| CN114377417A (en) * | 2021-12-25 | 2022-04-22 | 广东台泉环保科技有限公司 | MVR efficient evaporation system and evaporation process thereof |
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| CN110668518A (en) * | 2019-10-25 | 2020-01-10 | 内蒙古金河环保科技股份有限公司 | Evaporative crystallization process for high-salt water treatment |
| CN114225437A (en) * | 2021-11-01 | 2022-03-25 | 畅庆环保科技(太仓)有限公司 | Automatic control circulating evaporation concentration device and process |
| CN114377417A (en) * | 2021-12-25 | 2022-04-22 | 广东台泉环保科技有限公司 | MVR efficient evaporation system and evaporation process thereof |
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Application publication date: 20170222 |