CN106390496A - Energy-saving evaporation equipment of mixed salt solution and control method of equipment - Google Patents
Energy-saving evaporation equipment of mixed salt solution and control method of equipment Download PDFInfo
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- CN106390496A CN106390496A CN201610850708.5A CN201610850708A CN106390496A CN 106390496 A CN106390496 A CN 106390496A CN 201610850708 A CN201610850708 A CN 201610850708A CN 106390496 A CN106390496 A CN 106390496A
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- 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
Abstract
The invention discloses energy-saving evaporation equipment of a mixed salt solution. The energy-saving evaporation equipment of the mixed salt solution comprises a preheating device, an evaporation and concentration device, an evaporation and crystallization device, a crystallization and separation device and a control device. The energy-saving evaporation equipment of the mixed salt solution adopts a compressor to compress secondary steam separated from a concentration evaporator and a crystallization evaporator and takes the compressed secondary steam as heating steam to replace the traditional steam heating evaporation and crystallization method, realizes the reciprocating circulation in the system by providing a loop, and achieves a good evaporation effect only with a small number of electric energy, without heating raw steam or condensing equipment so as to open up a new approach for reducing cost, saving energy and protecting environment in the treatment process of the mixed salt solution; and the energy-saving evaporation equipment of the mixed salt solution divides the evaporation process into an evaporation and concentration stage and an evaporation and crystallization stage by a split type structure and performs monitoring and automatic feedback control by utilizing liquid level and temperature signals so as to greatly improve the equipment operating stability and reduce the equipment loss and the operating cost.
Description
Technical field
The present invention relates to the energy-conservation evaporation technical field of solution, in particular it relates to a kind of energy-conservation evaporation of mixed salt solution sets
Standby and its control method.
Background technology
Mixed salt is a kind of frequent material occurring in Chemical Manufacture, and mixed salt solution condensing crystallizing generally adopts evaporator man
Skill, traditional evaporation technology uses steam energy, and steam energy generally obtains further through the combusts fossil energy (coal, oil etc.)
?.In recent years since, steam price rises steadily, and the energy consumption cost of traditional evaporation technology makes vast enterprise increased pressure, more next
More can't bear the heavy load, and the burning of fossil energy brings the huge hidden danger of environmental pollution, increasingly deviate from energy-conserving and environment-protective, green
The development general trend of events at home.
Content of the invention
It is an object of the invention to provide a kind of energy-conservation evaporation equipment of mixed salt solution and its control method, above-mentioned to solve
The problem proposing in background technology.
For achieving the above object, the present invention provides following technical scheme：
A kind of energy-conservation evaporation equipment of mixed salt solution, including preheating device, evaporation concentration device, evaporated crystallization device, knot
Brilliant separator, control device；Described preheating device includes material buffer tank, preheater, and material buffer tank and preheater pass through
One section of conveying pipeline connects, and described conveying pipeline is provided with feed pump；Described evaporation concentration device includes first circulation pump, concentrates and steam
Send out device, vapour compression machine and condensate water pot；The port of export pipeline of described circulating pump is connected to the discharge end of preheater；First follows
Ring pump and concentration evaporator connect and are formed closed-loop path by pipeline, and concentrate passes through closed-loop path and in circulating pump and concentrates steaming
Send out and circulate between device；Described concentration evaporator bottom concentrate discharging opening passes through transfering material pump and pipeline with evaporated crystallization device even
Connect；The steam (vapor) outlet of described concentration evaporator passes through the air inlet that one section of appendix connects vapour compression machine, vapour compression machine
Gas outlet is connected with concentration evaporator steam inlet, and the steam condensate (SC) outlet through heat exchange condensation connects condensed water by water-supply-pipe
Tank；Described evaporated crystallization device includes second circulation pump, crystallizing evaporator；Described crystallizing evaporator bottom charging aperture passes through pipeline
It is connected to evaporation concentration device with described transfering material pump；Second circulation pump and crystallizing evaporator are connected by pipeline and are formed and close back
Road, concentrate is circulated between second circulation pump and crystallizing evaporator by closed-loop path；Described crystallizing evaporator bottom concentrates
Liquid discharging opening passes through discharging pump and pipeline is connected with Crystallization Separation device；The steam (vapor) outlet of described crystallizing evaporator is defeated by one section
Tracheae connects the air inlet of described vapour compression machine, the gas outlet of described vapour compression machine and described crystallizing evaporator steam inlet
Connection, the steam condensate (SC) outlet through heat exchange condensation connects described condensate water pot by water-supply-pipe；Described Crystallization Separation device bag
Include crystallizer, equipment for separating liquid from solid, crystallizer and equipment for separating liquid from solid are connected to going out of crystallizing evaporator in turn by discharging pump
Material end；Described control device includes control circuit, sensor, by sensor, the data such as liquid level, temperature is monitored, by controlling
Circuit processed automatically controls each pump operation, realizes full-range automation.Here, concentration evaporator, crystallizing evaporator both can be utilized
Steam heats to solution, is easy to solution again and carries out respectively concentrating in its each substructure, concentrates, has integration
Structural advantage, advantageously reduces the connection members such as pipeline, shortens solution flow process, effectively utilizes space, improves operating efficiency.
Preferably, described sensor includes the concentration liquid level sensor in concentration evaporator, and described control circuit is divided
It is not connected with concentration liquid level sensor, feed pump.
Preferably, described sensor includes the crystallization liquid level sensor in crystallizing evaporator, and described control circuit is divided
It is not connected with crystallization liquid level sensor, transfering material pump.
Preferably, described sensor includes steam temperature sensor in crystallizing evaporator, fluid temperature sensor,
Described control circuit is connected with steam temperature sensor, fluid temperature sensor and discharging pump respectively.
Preferably, described condensate water pot is provided with condensation-water drain, and described condensation-water drain passes through water-supply-pipe and distilled water pump
Water inlet end connect, the water side of described distilled water pump is connected on preheater.
Preferably, it is provided with second servo loop between described equipment for separating liquid from solid and crystallizing evaporator, second servo loop is provided with mother
Liquid pump, the mother liquor obtaining after separation of solid and liquid is pumped into circular treatment in evaporated crystallization device through mother liquor.
Compared with prior art, the invention has the beneficial effects as follows：The energy-conservation of this mixed salt solution evaporates equipment replacement tradition
Steam-heated evaporation mode, using the indirect steam isolated in compressor compresses concentration evaporator, crystallizing evaporator, make
With the indirect steam after compression as heating steam, instead of traditional steam-heated evaporation and crystallization mode, and by setting
The reciprocation cycle of internal system is realized in loop, accomplishes to give birth to steam heating, without condensing plant, only needs a small amount of electric energy with regard to energy
Reach good evaporation effect, thus opening a new way for mixed salt solution processing procedure reduces cost, energy-conserving and environment-protective；Logical
Cross split-type structural and evaporation process is divided into evaporation and concentration and evaporative crystallization two benches, monitored and oneself using liquid level, temperature signal
Dynamic feedback control, substantially increases stable equipment operation, decreases equipment loss and operation cost.
For the purpose of invention is better achieved, here, also provide a kind of control of the energy-conservation evaporation equipment of described mixed salt solution
Method processed, comprises the following steps：
S1. by concentration liquid level sensor, evaporation concentration device concentration evaporator liquid level is monitored, in concentration evaporator
During low liquid level, control circuit automatically controls unlatching feed pump, closes feed pump when concentration evaporator liquid level is high and steams it is ensured that concentrating
Send out device liquid level and maintain stable region；
S2. by crystallization liquid level sensor, the crystallizing evaporator liquid level of evaporated crystallization device is monitored, in crystallization and evaporation
During device low liquid level, transfering material pump is automatically controlled by control circuit and opens, the liquid automatic stream crystallizing evaporator in concentration evaporator,
In crystallizing evaporator, material is supplemented, and when crystallizing evaporator liquid level is high, control circuit automatically controls transfering material pump and closes, and passes through
The keying of transfering material pump, makes the material liquid level in crystallizing evaporator maintain stable region；
S3. because mixed salt solution is under finite concentration, there is stable temperature difference, by steam in its liquid temperature and vapor (steam) temperature
Temperature sensor, fluid temperature sensor are monitored to indirect steam temperature and temperature of charge in crystallizing evaporator respectively, when
Control circuit monitors that vapour-liquid temperature difference reaches setting value, that is, represent that concentrate reaches requirement concentration, then control discharging pump to open
Discharging, when the temperature difference drops to certain setting value, closes discharging pump and stops discharging, so realize self-emptying.
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. concentration evaporator, 5. first circulation pump, 6. turn material
Pump, 7. crystallizing evaporator, 8. second circulation pump, 9. vapour compression machine, 10. condensate water pot, 11. distilled water pumps, 12. discharging pumps,
13. crystallizers, 14. equipment for separating liquid from solid, 15. mother liquor pumps.
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.
Shown in reference Fig. 1, Fig. 2, a kind of energy-conservation evaporation equipment of mixed salt solution, mixed salt solution energy-conservation evaporation equipment, its bag
Include preheating device, evaporation concentration device, evaporated crystallization device, Crystallization Separation device, control device；Described preheating device includes thing
Material surge tank 1, feed pump 2, preheater 3, material buffer tank 1 is connected by one section of conveying pipeline with preheater 3, on described conveying pipeline
Feed pump 2 is installed；Described evaporation concentration device includes concentration evaporator 4, first circulation pump 5, vapour compression machine 9 and condensation
Water pot 10；The discharge end of preheater 3 is connected with the port of export pipeline of described first circulation pump 5；First circulation pump 5 steams with concentrating
Send out device 4 and connect and formed closed-loop path by pipeline, the concentrate after concentrated evaporimeter 4 separates passes through first circulation pump 5 in fact
Existing circulating and evaporating, isolates concentrate；Described concentration evaporator 4 bottom concentrated solution outlet passes through a transfering material pump 6 and pipeline and steaming
Send out crystallization apparatus to connect；The steam (vapor) outlet of described concentration evaporator 4 passes through the air inlet that one section of appendix connects vapour compression machine 9
Mouthful, one of gas outlet of vapour compression machine 9 is connected with concentration evaporator 4 steam inlet, and the condensation-water drain of concentration evaporator 4 leads to
Cross water-supply-pipe and connect condensate water pot 10；Described evaporated crystallization device includes crystallizing evaporator 7, second circulation pump 8；Described crystallization is steamed
Send out device 7 feeding mouth to be connected with transfering material pump 6 described above outlet by pipeline；Described crystallizing evaporator 7 and second circulation pump 8 pass through
Pipeline connects formation closed-loop path, and on described closed-loop path, material is heated in crystallizing evaporator 7, steamed by second circulation pump 8
Send out, form concentrate and indirect steam after gas-liquid separation；The steam (vapor) outlet of described crystallizing evaporator 7 passes through one section of appendix and connects
The air inlet of vapour compression machine 9；One of gas outlet of described vapour compression machine 9 is connected with crystallizing evaporator 7；Described crystallization and evaporation
The condensation-water drain of device 7 connects condensate water pot 10 by water-supply-pipe；Described crystallizing evaporator 7 bottom is provided with concentrate discharging
Mouthful；Described Crystallization Separation device includes discharging pump 12, crystallizer 13, equipment for separating liquid from solid 14, mother liquor pump 15；Described discharging pump 12
Charging aperture is connected to crystallizing evaporator 7 bottom concentrate discharging opening described above by pipeline；The charging of described crystallizer 13
Mouth connects the discharging opening of discharging pump 12 by pipeline；Described crystallizer 13 bottom is provided with discharge gate, and discharge gate is by pipeline even
Connect equipment for separating liquid from solid 14；Described equipment for separating liquid from solid 14 is provided with leakage fluid dram, and leakage fluid dram connects mother liquor pump 15 by pipeline and enters
Material mouth；Described mother liquor pump 15 discharging opening connects evaporated crystallization device pump entry pipeline described above by pipeline；Described solid
The solid that liquid separating apparatus 14 are isolated enters subsequent processing reprocessing, and the liquid isolated pumps into evaporation again by mother liquor pump 15
Crystallization apparatus re-evaporation concentrates；Described control device includes control circuit, sensor, by sensor to the number such as liquid level, temperature
According to being monitored, each pump operation is automatically controlled by control circuit, realize full-range automation.
For ease of more fully understanding the present invention, it is below the brief technique of the mixed salt solution energy-conservation evaporation using described setting
Flow process：Temperature in material buffer tank 1 is room temperature, and it is cold with preheater 3 that mixed salt solution stoste pumps into preheater 3 through feed pump 2
Solidifying water produces heat exchange, and after preheater 3, temperature rises；Mixed salt solution after preheating enters in concentration evaporator 4, and passes through
Circulating and evaporating realized by circulating pump, material in circulating evaporator with heating steam heat-exchanging, absorb heat mixed salt solution flash distillation dense
Contracting, isolates indirect steam and concentrate, and indirect steam enters vapour compression machine 9 from concentration evaporator 4 steam (vapor) outlet, through steam
After the adiabatic compression of compressor 9, temperature and pressure gets a promotion；Indirect steam after increasing temperature and pressure enters dense as heating steam
With mixed salt solution heat exchange in contracting evaporimeter 4, after heat release, it is condensed into water, and enter condensate water pot 10；Absorb the mixed salt solution of heat
Flash distillation isolate indirect steam and concentrate in concentration evaporator 4, concentrate passes through the effect of a transfering material pump 6, enters and steams
Send out in crystallization apparatus, concentrated again by circulating pump and the further circulating and evaporating of crystallizing evaporator 7, concentrate is in crystallizing evaporator 7
In with heating steam heat-exchanging, absorb heat after flash distillation in crystallizing evaporator 7 device, isolate indirect steam and concentrate, secondary
Steam from crystallizing evaporator 7 lower steam export enter vapour compression machine 9, after the adiabatic compression through vapour compression machine 9, temperature and
Pressure gets a promotion；Indirect steam after increasing temperature and pressure enters steam inlet and the mixed salt of crystallizing evaporator 7 as heating steam
Solution heat exchange, is condensed into water after heat release, and enters condensate water pot 10；In crystallizing evaporator 7, mixed salt solution concentrate concentration reaches
Pump into crystallization in crystallizer 13 through discharging pump 12 during setting value, be then passed through crystallizer 13 and equipment for separating liquid from solid 14 isolates crystalline substance
Body, the liquid isolated reenters evaporated crystallization device by mother liquor pump 15 to be continued to be concentrated by evaporation；Last out from preheater 3
Condensed water can be with reuse or qualified discharge.
Described condensate water pot 10 is provided with condensation-water drain, and the water inlet end of a distilled water pump 11 is connected to condensation by water-supply-pipe
The condensation-water drain of water pot 10, the water side of distilled water pump 11 is connected on preheater 3.Due to from the condensate water pot 10 out
Water also has uniform temperature, if being expelled directly out leading to the waste of thermal source, the water in condensate water pot 10 is incorporated into preheater 3
In, can be as the thermal source of preheater 3, thus reaching the purpose making full use of heat.
It is provided with loop, loop is provided with mother liquor pump 15, and solid-liquid divides between described equipment for separating liquid from solid 14 and crystallizing evaporator 7
From after the mother liquor that obtains be sent to circular treatment in crystallizing evaporator 7 through mother liquor pump 15.Mother liquor after separating is saturation mixed salt
After solution, therefore design second servo loop, mother liquor enters in evaporated crystallization device by second servo loop, then fills in evaporative crystallization
Put middle continuation to concentrate, reach Crystallization Separation, so circulation again after predetermined concentration, finally realize returning completely of mixed salt solution
Receive.
The condensation-water drain of described preheater 3 is connected with drainpipe, and the condensed water after heat exchange is discharged through drainpipe.
With reference to shown in Fig. 2, described sensor includes the concentration liquid level sensor in concentration evaporator 4, described control
Circuit is connected with concentration liquid level sensor, feed pump 2 respectively.Described sensor includes the crystal solution in crystallizing evaporator 7
Level sensor, described control circuit is connected with crystallization liquid level sensor, transfering material pump 6 respectively.Described sensor is included located at crystallization
Steam temperature sensor in evaporimeter 7, fluid temperature sensor, described control circuit respectively with steam temperature sensor, liquid
Temperature sensor and discharging pump 12 connect.
For the purpose of invention is better achieved, here, also provide a kind of control of the energy-conservation evaporation equipment of described mixed salt solution
Method processed, comprises the following steps：
S1. by concentration liquid level sensor, evaporation concentration device concentration evaporator 4 liquid level is monitored, in concentration evaporator
During 4 low liquid level, control circuit automatically controls unlatching feed pump 2, closes feed pump 2 when concentration evaporator 4 liquid level is high it is ensured that dense
Contracting evaporimeter 4 liquid level maintains stable region；
S2. by crystallization liquid level sensor, crystallizing evaporator 7 liquid level of evaporated crystallization device is monitored, in crystallization and evaporation
During device 7 low liquid level, transfering material pump 6 is automatically controlled by control circuit and opens, the liquid automatic stream crystallization and evaporation in concentration evaporator 4
Device 7, in crystallizing evaporator 7, material is supplemented, and when crystallizing evaporator 7 liquid level is high, control circuit automatically controls transfering material pump 6 and closes
Close, by the keying of transfering material pump 6, make the material liquid level in crystallizing evaporator 7 maintain stable region；
S3. because mixed salt solution is under finite concentration, there is stable temperature difference, by steam in its liquid temperature and vapor (steam) temperature
Temperature sensor, fluid temperature sensor are monitored to indirect steam temperature in crystallizing evaporator 7 and temperature of charge respectively, when
Control circuit monitors that vapour-liquid temperature difference reaches setting value, that is, represent that concentrate reaches requirement concentration, then control discharging pump 12 to open
Open discharging, when the temperature difference drops to certain setting value, close discharging pump 12 and stop discharging, so realize self-emptying.
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 (7)
1. a kind of energy-conservation evaporation equipment of mixed salt solution is it is characterised in that include preheating device, evaporation concentration device, evaporation knot
Brilliant device, Crystallization Separation device, control device；Described preheating device includes material buffer tank, preheater, material buffer tank with pre-
Hot device passes through one section of conveying pipeline and connects, and described conveying pipeline is provided with feed pump；Described evaporation concentration device includes first circulation
Pump, concentration evaporator, vapour compression machine and condensate water pot；The port of export pipeline of described circulating pump is connected to the discharging of preheater
End；First circulation pump and concentration evaporator connect and are formed closed-loop path by pipeline, and concentrate passes through closed-loop path in circulation
Circulate between pump and concentration evaporator；Described concentration evaporator bottom concentrate discharging opening passes through transfering material pump and pipeline and evaporation knot
Brilliant device connects；The steam (vapor) outlet of described concentration evaporator passes through the air inlet that one section of appendix connects vapour compression machine, steam
The gas outlet of compressor is connected with concentration evaporator steam inlet, and the steam condensate (SC) outlet through heat exchange condensation is by water-supply-pipe even
Connect condensate water pot；Described evaporated crystallization device includes second circulation pump, crystallizing evaporator；Described crystallizing evaporator bottom charging aperture
Evaporation concentration device is connected to by pipeline and described transfering material pump；Second circulation pump and crystallizing evaporator are connected and shape by pipeline
Become closed-loop path, concentrate is circulated between second circulation pump and crystallizing evaporator by closed-loop path；Described crystallizing evaporator
Bottom concentrate discharging opening passes through discharging pump and pipeline is connected with Crystallization Separation device；The steam (vapor) outlet of described crystallizing evaporator leads to
Cross the air inlet that one section of appendix connects described vapour compression machine, the gas outlet of described vapour compression machine and described crystallizing evaporator
Steam inlet connects, and the steam condensate (SC) outlet through heat exchange condensation connects described condensate water pot by water-supply-pipe；Described crystallization point
Include crystallizer, equipment for separating liquid from solid from device, crystallizer and equipment for separating liquid from solid are connected to crystallization in turn by discharging pump and steam
Send out the discharge end of device；Described control device includes control circuit, sensor, by sensor, the data such as liquid level, temperature is carried out
Monitoring, automatically controls each pump operation by control circuit, realizes full-range automation.
2. the energy-conservation evaporation equipment of mixed salt solution as claimed in claim 1 is it is characterised in that described sensor is included located at dense
Concentration liquid level sensor in contracting evaporimeter, described control circuit is connected with concentration liquid level sensor, feed pump respectively.
3. the energy-conservation evaporation equipment of mixed salt solution as claimed in claim 2 is it is characterised in that described sensor is included located at knot
Crystallization liquid level sensor in brilliant evaporimeter, described control circuit is connected with crystallization liquid level sensor, transfering material pump respectively.
4. the energy-conservation evaporation equipment of mixed salt solution as claimed in claim 3 is it is characterised in that described sensor is included located at knot
Steam temperature sensor in brilliant evaporimeter, fluid temperature sensor, described control circuit respectively with steam temperature sensor, liquid
Temperature sensor and discharging pump connect.
5. the energy-conservation evaporation equipment of mixed salt solution as claimed in claim 4 is it is characterised in that described condensate water pot is provided with condensation
Water out, described condensation-water drain is connected with the water inlet end of distilled water pump by water-supply-pipe, and the water side of described distilled water pump is even
It is connected on preheater.
6. the energy-conservation evaporation equipment of mixed salt solution as claimed in claim 5 is it is characterised in that described equipment for separating liquid from solid and knot
It is provided with second servo loop, second servo loop is provided with mother liquor pump, the mother liquor obtaining after separation of solid and liquid is through mother liquor between brilliant evaporimeter
It is pumped into circular treatment in evaporated crystallization device.
7. a kind of control method of the energy-conservation evaporation equipment of described mixed salt solution is it is characterised in that comprise the following steps：
S1. by concentration liquid level sensor, evaporation concentration device concentration evaporator liquid level is monitored, in the low liquid of concentration evaporator
During position, control circuit automatically controls unlatching feed pump, closes feed pump when concentration evaporator liquid level is high it is ensured that concentration evaporator
Liquid level maintains stable region；
S2. by crystallization liquid level sensor, the crystallizing evaporator liquid level of evaporated crystallization device is monitored, low in crystallizing evaporator
During liquid level, transfering material pump is automatically controlled by control circuit and opens, the liquid automatic stream crystallizing evaporator in concentration evaporator, crystallization
In evaporimeter, material is supplemented, and when crystallizing evaporator liquid level is high, control circuit automatically controls transfering material pump and closes, by turning material
The keying of pump, makes the material liquid level in crystallizing evaporator maintain stable region；
S3. because mixed salt solution is under finite concentration, there is stable temperature difference, by vapor (steam) temperature in its liquid temperature and vapor (steam) temperature
Sensor, fluid temperature sensor are monitored to indirect steam temperature and temperature of charge in crystallizing evaporator respectively, work as control
Circuit monitoring reaches setting value to vapour-liquid temperature difference, that is, represent that concentrate reaches requirement concentration, then control discharging pump to open discharging,
When the temperature difference drops to certain setting value, close discharging pump and stop discharging, so realize self-emptying.
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| CN201610850708.5A CN106390496A (en) | 2016-09-26 | 2016-09-26 | Energy-saving evaporation equipment of mixed salt solution and control method of equipment |
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| CN201610850708.5A CN106390496A (en) | 2016-09-26 | 2016-09-26 | Energy-saving evaporation equipment of mixed salt solution and control method of equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106693413A (en) * | 2017-03-07 | 2017-05-24 | 内蒙古碳谷科技有限公司 | Stable small-flow liquid evaporation system and evaporation technology thereof |
| CN106957122A (en) * | 2017-03-30 | 2017-07-18 | 中国科学院广州能源研究所 | It is a kind of to be used to handle the evaporative crystallisation process of brine waste and realize the device of this method |
| CN106964169A (en) * | 2017-05-11 | 2017-07-21 | 刘向东 | Suitable for high-salt concentrated degree and have crystal separate out MVR crystallizing evaporators and its production technology |
| CN108217797A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | A kind of single-stage multiple-effect evaporation separator |
| CN108217792A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | Multi-functional MVR vaporising devices |
| CN109179538A (en) * | 2018-09-28 | 2019-01-11 | 南京龙源环保有限公司 | A kind of zero-discharge treatment system of desulfurization wastewater concentration, evaporation and crystallization one |
| 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693413A (en) * | 2017-03-07 | 2017-05-24 | 内蒙古碳谷科技有限公司 | Stable small-flow liquid evaporation system and evaporation technology thereof |
| CN106957122A (en) * | 2017-03-30 | 2017-07-18 | 中国科学院广州能源研究所 | It is a kind of to be used to handle the evaporative crystallisation process of brine waste and realize the device of this method |
| CN106964169A (en) * | 2017-05-11 | 2017-07-21 | 刘向东 | Suitable for high-salt concentrated degree and have crystal separate out MVR crystallizing evaporators and its production technology |
| CN108217797A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | A kind of single-stage multiple-effect evaporation separator |
| CN108217792A (en) * | 2018-03-22 | 2018-06-29 | 兰州节能环保工程有限责任公司 | Multi-functional MVR vaporising devices |
| CN109179538A (en) * | 2018-09-28 | 2019-01-11 | 南京龙源环保有限公司 | A kind of zero-discharge treatment system of desulfurization wastewater concentration, evaporation and crystallization one |
| 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 |
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Application publication date: 20170215 |