CN108467051A - Crystal separator and method in potassium chloride magma - Google Patents
Crystal separator and method in potassium chloride magma Download PDFInfo
- Publication number
- CN108467051A CN108467051A CN201810507054.5A CN201810507054A CN108467051A CN 108467051 A CN108467051 A CN 108467051A CN 201810507054 A CN201810507054 A CN 201810507054A CN 108467051 A CN108467051 A CN 108467051A
- Authority
- CN
- China
- Prior art keywords
- outlet
- mother liquor
- separator
- magma
- crystallizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/22—Preparation in the form of granules, pieces, or other shaped products
-
- 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
- B01D2009/0086—Processes or apparatus therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Cyclones (AREA)
Abstract
The invention discloses crystal separator and methods in a kind of potassium chloride magma, belong to evaporative crystallization field.The technique includes mainly the equipment such as crystallizer, heater, separator, the brilliant tank of storage, circulating pump, clear liquid pump, raw material pump, Chu Jingfa, densitometer, feed valve, dump valve.It is characterized in that：The present invention carries out pre-separation using separator to unqualified magma small particles crystal, the clear liquid obtained at the top of separator is recycled as circulating mother liquor, the magma with little particle crystal that separator bottom obtains enters the brilliant tank of storage, the brilliant liquid of storage is mixed into the clear mother liquor flowed out from crystallizer enter crystallizer together in the brilliant tank of storage, continue crystal growth, so cycle is until grow into qualified magma；The impact that entire potassium chloride developmental process avoids circulating pump is damaged, ensure that the integrality of potassium chloride, while capable of preferably controlling potassium chloride grain size number, improves potassium chloride crystalline rate and its purity.
Description
Technical field
The present invention devises crystal separator and method in a kind of potassium chloride magma, belongs to evaporative crystallization field.
Background technology
Potassium chloride evaporative crystallization is that Klorvess Liquid evaporation and concentration is made to reach supersaturation, to which the mistake of potassium chloride be precipitated
Journey.Potassium chloride crystallizes precipitation from solution need to undergo 2 steps, be to generate the microcosmic crystal grain for being known as nucleus as knot first
Brilliant core, followed by nuclei growth become the crystal grain of macroscopic view.According to crystalline rate mechanism, the factor for influencing grain size number is main
There are the relative velocity, viscosity, surface tension etc. of solution.
Common potassium chloride evaporative crystallization technique industrial at present mainly has the method that floatation and other methods are combined
And adding halogen method.In order to make the grain size number of potassium chloride meet industrial requirements, in recent years people mainly from mold structure,
Agitator speed and the several aspects of process cycles amount are improved, but still without eliminate unqualified crystal by circulating pump into
The unfavorable factor being broken during entering circulating mother liquor.Quickly centrifugation impact easily causes little particle crystal to be damaged, even
Rupture seriously affects little particle growth process, eventually leads to crystalline rate decline, and crystal quality deteriorates.
How to protect little particle crystal not damaged, accurately control grain size number, further increase crystalline rate, is current
Urgent problem to be solved.
Invention content
Cause potassium chloride grain size number not by the present invention is broken for existing unqualified crystal crystal after circulating pump
It is easy to control, the problems such as crystalline rate is low, propose the potassium chloride magma that a kind of average grain diameter is larger, surface area is small, crystalline rate is high
Middle crystal separator and method.
Crystal separator in a kind of potassium chloride magma, it is characterised in that：Including crystallizer, heater, separator, Chu Jing
Tank, clear liquid pump, raw material pump, Chu Jingfa, densitometer, material liquid import, qualified magma outlet, indirect steam outlet, adds circulating pump
Hot steam import, condensate outlet, feed valve, dump valve；Crystallizer includes circulating mother liquor import, stores brilliant liquid import, top steaming
Vapor outlet, clear mother liquor outlet and bottom end taphole；Heater includes that hot side entrance, hot side outlet, cold side input port and cold side go out
Mouthful；Separator includes mother liquor import, top mother liquor outlet and the outlet of bottom end magma；The brilliant tank of storage includes magma import, clear mother liquor
Import and the brilliant liquid outlet of storage；Densitometer includes dense mother liquor import, qualified outlet and unqualified outlet；Material liquid import passes through raw material
Valve and raw material pump are connected with separator mother liquor import, and separator top mother liquor outlet passes through circulating pump and heater cold side input port phase
Even, heater cold side outlet port is connected with crystallizer circulating mother liquor import, crystallizer bottom end taphole and the dense mother liquor of densitometer into
Mouth is connected, and the outlet of densitometer qualification, which is exported by dump valve with qualified magma, to be connected, and the unqualified outlet of densitometer and separator are female
Liquid import is connected, and magma outlet in separator bottom end is connected by storing up the brilliant tank magma import of brilliant valve and storage, and the clear mother liquor of crystallizer goes out
Mouth is connected with by clear liquid pump with the brilliant clear mother liquor import of tank of storage, and the brilliant liquid outlet of the brilliant tank storage of storage is connected with the brilliant liquid import of crystallizer storage,
Crystallizer top steam (vapor) outlet is connected with indirect steam outlet；Heating steam inlet is connected with heater hot side entrance, heater
Hot side outlet is connected with condensate outlet.
The working method of crystal separator in a kind of potassium chloride magma, which is characterized in that including following work
Process：Steam is heated by heating steam inlet, heater is flowed by heater hot side import, after exchanging heat with circulating mother liquor
Condensate outlet is discharged to by heater hot side outlet；Material liquid flows into technological process from material liquid import, is pumped into through raw material
Separator；Heater cold side import is flowed into through circulating pump by the circulating mother liquor of separator top mother liquor outlet outflow, is steamed with heating
It is flowed out by heater cold side outlet port after vapour heat exchange；Circulating mother liquor after heating flows into crystallizer by crystallizer circulating mother liquor import,
Flash distillation is completed in crystallizer and cools to hypersaturated state precipitation potassium chloride, and indirect steam is by crystallizer top steam (vapor) outlet
It is discharged to indirect steam outlet, dense mother liquor flows into densitometer by crystallizer bottom end taphole：When magma density is eligible,
Dense mother liquor is discharged to qualified magma outlet from the outlet of densitometer qualification；When magma density is ineligible, dense mother liquor is from density
Unqualified outlet discharge is counted, mother liquor is mixed into material liquid and enters separator：The circulating mother liquor gone out by separator sub-argument is from separation
The mother liquor outlet discharge of device top, so recycles；The little particle crystal isolated by separator is by separator bottom end magma outlet stream
Go out；Magma with little particle crystal enters the brilliant tank of storage, under the action of clear liquid pump, by what is flowed out from the clear mother liquor outlet of crystallizer
Clear mother liquor is blended into the brilliant liquid of storage in the brilliant tank of storage with magma, and the storage crystalline substance liquid with little particle crystal stores brilliant liquid inlet flow from crystallizer
Enter crystallizer, continues crystal growth, so recycle.
Crystal separating technology in a kind of potassium chloride magma, it is characterised in that：Indirect steam exports and heating steam
Import can not be communicated directly, but being heated by compressor makes indirect steam outlet and heating steam inlet communicate.
Crystal separator in a kind of potassium chloride magma, it is characterised in that：Separator using cyclone separator or
Dilatation separator.Separator liquid level is kept constant in cyclic process, and liquid level is controlled by the brilliant valve of storage.
Crystal separator in a kind of potassium chloride magma, it is characterised in that：The clear mother liquor outlet of crystallizer is located at molten
Below liquid liquid level at 0.2-0.5m.
The present invention carries out pre-separation using separator to unqualified magma small particles crystal, is obtained at the top of separator clear
Liquid is recycled as circulating mother liquor, and the magma with little particle crystal that separator bottom obtains enters the brilliant tank of storage, brilliant in storage
The brilliant liquid of storage is mixed into the clear mother liquor flowed out from crystallizer in tank and enters crystallizer together, continue crystal growth, so cycle is straight
To growing into qualified magma；The impact that entire potassium chloride developmental process avoids circulating pump is damaged, ensure that potassium chloride crystalline substance
The integrality of body improves potassium chloride crystalline rate and its purity while capable of preferably controlling potassium chloride grain size number.
Description of the drawings
Crystal separating technology flow chart in a kind of potassium chloride magmas of Fig. 1；
Label title in Fig. 1：1. crystallizer, 2. heaters, 3. separators, the brilliant tank of 4. storages, 5. circulating pumps, 6. clear liquid pumps, 7. is former
Material pump, the brilliant valve of 8. storages, 9. densitometers, 10. material liquid imports, 11. qualified magma outlets, the outlet of 12. indirect steams, 13. heating
Steam inlet, 14. condensate outlets, 15. feed valves, 16. dump valves.
Specific implementation method
Fig. 1 is crystal separating technology flow in a kind of potassium chloride magma proposed by the present invention, illustrates the technique referring to Fig. 1
The course of work.
Steam is heated by heating steam inlet 13, heater 2 is flowed by 2 hot side import of heater, is sent out with circulating mother liquor
Condensate outlet 14 is discharged to by 2 hot side outlet of heater after raw heat exchange；
Material liquid flows into technological process from material liquid import 10, and separator 3 is sent into through raw material pump 7；Gone out by 3 top mother liquor of separator
The circulating mother liquor of mouth outflow flows into 2 cold side import of heater through circulating pump 5, is gone out by 2 cold side of heater with after heating steam heat-exchanging
Mouth outflow；Circulating mother liquor after heating flows into crystallizer 1 by 1 circulating mother liquor import of crystallizer, and flash distillation drop is completed in crystallizer 1
Potassium chloride is precipitated to saturation state in temperature, and indirect steam is discharged to indirect steam outlet 12 by 1 top steam (vapor) outlet of crystallizer,
Dense mother liquor flows into densitometer 9 by 1 bottom end taphole of crystallizer：When magma density is eligible, dense mother liquor is closed from densitometer 9
Lattice outlet is discharged to qualified magma outlet 11；When magma density is ineligible, dense mother liquor is arranged from 9 unqualified outlet of densitometer
Go out, being mixed into mother liquor with material liquid enters separator 3：The circulating mother liquor gone out by 3 sub-argument of separator goes out from 3 top mother liquor of separator
Mouth discharge, so recycles；The little particle crystal isolated by separator 3 is by 3 bottom end magma outlet outflow of separator；With small
The magma of grain crystal enters the brilliant tank 4 of storage and is existed by the clear mother liquor flowed out from 1 clear mother liquor outlet of crystallizer under the action of clear liquid pump 6
The brilliant liquid of storage is blended into storage crystalline substance tank 4 with magma, the storage crystalline substance liquid with little particle crystal stores brilliant liquid import inflow crystallization from crystallizer 1
Device 1 continues crystal growth, so recycles.
Claims (5)
1. crystal separator in a kind of potassium chloride magma, it is characterised in that：
Including crystallizer（1）, heater（2）, separator（3）, the brilliant tank of storage（4）, circulating pump（5）, clear liquid pump（6）, raw material pump
（7）, Chu Jingfa（8）, densitometer（9）, material liquid import（10）, qualified magma outlet（11）, indirect steam outlet（12）, heating
Steam inlet（13）, condensate outlet（14）, feed valve（15）, dump valve（16）；
Crystallizer（1）Go out including circulating mother liquor import, the brilliant liquid import of storage, top steam (vapor) outlet, clear mother liquor outlet and bottom end solution
Mouthful；Heater（2）Including hot side entrance, hot side outlet, cold side input port and cold side outlet port；Separator（3）Including mother liquor import, top
Hold mother liquor outlet and the outlet of bottom end magma；The brilliant tank of storage（4）Including magma import, clear mother liquor import and store brilliant liquid outlet；Density
Meter（9）Including dense mother liquor import, qualified outlet and unqualified outlet；
Material liquid import（10）Pass through feed valve（15）It is pumped with raw material（7）With separator（3）Mother liquor import is connected, separator（3）
Top mother liquor outlet passes through circulating pump（5）With heater（2）Cold side input port is connected, heater（2）Cold side outlet port and crystallizer（1）
Circulating mother liquor import is connected, crystallizer（1）Bottom end taphole and densitometer（9）Dense mother liquor import is connected, densitometer（9）It is qualified
Outlet passes through dump valve（16）It is exported with qualified magma（11）It is connected, densitometer（9）Unqualified outlet and separator（3）Mother liquor into
Mouth is connected；Separator（3）Bottom end magma outlet passes through Chu Jingfa（8）With the brilliant tank of storage（4）Magma import is connected, crystallizer（1）
Clear mother liquor outlet and pass through clear liquid pump（6）With the brilliant tank of storage（4）Clear mother liquor import is connected, and stores up brilliant tank（4）Store brilliant liquid outlet and crystallization
Device（1）It stores brilliant liquid import to be connected, crystallizer（1）Top steam (vapor) outlet is exported with indirect steam（12）It is connected；
Heat steam inlet（13）With heater（2）Hot side entrance is connected, heater（2）Hot side outlet and condensate outlet（14）
It is connected.
2. crystal separator in potassium chloride magma according to claim 1, it is characterised in that：Indirect steam exports（12）
With heating steam inlet（13）It does not communicate directly, but being heated by compressor makes indirect steam export（12）With heating steam into
Mouthful（13）It communicates.
3. crystal separator in potassium chloride magma according to claim 1, it is characterised in that：Separator（3）Using rotation
Wind separator or dilatation separator.
4. crystal separator in potassium chloride magma according to claim 1, it is characterised in that：Crystallizer（1）Clear mother liquor
Outlet is located at below liquid level of solution at 0.2-0.5m.
5. the working method of crystal separator in a kind of potassium chloride magma according to claim 1, which is characterized in that packet
Include the following course of work：
Steam is heated by heating steam inlet（13）, by heater（2）Hot side import flows into heater（2）, with circulating mother liquor
By heater after exchanging heat（2）Hot side outlet is discharged to condensate outlet（14）；
Material liquid is from material liquid import（10）Technological process is flowed into, is pumped through raw material（7）It is sent into separator（3）；By separator（3）Top
Hold the circulating mother liquor of mother liquor outlet outflow through circulating pump（5）Flow into heater（2）By adding after cold side import, with heating steam heat-exchanging
Hot device（2）Cold side outlet port flows out；Circulating mother liquor after heating is by crystallizer（1）Circulating mother liquor import flows into crystallizer（1）, tying
Brilliant device（1）Interior completion flash distillation cools to hypersaturated state and potassium chloride is precipitated, and indirect steam is by crystallizer（1）Top steam goes out
Mouth is discharged to indirect steam outlet（12）, dense mother liquor is by crystallizer（1）Bottom end taphole flows into densitometer（9）：When magma is close
When spending eligible, dense mother liquor is from densitometer（9）Qualification outlet is discharged to qualified magma outlet（11）；When magma density is not met
When condition, dense mother liquor is from densitometer（9）Unqualified outlet discharge, is mixed into mother liquor with material liquid and enters separator（3）：By detaching
Device（3）The circulating mother liquor that sub-argument goes out is from separator（3）Top mother liquor outlet discharge, so recycles；By separator（3）It isolates
Little particle crystal is by separator（3）Bottom end magma outlet outflow；Magma with little particle crystal enters the brilliant tank of storage（4）, clear
Liquid pump（6）Under the action of, by from crystallizer（1）The clear mother liquor of clear mother liquor outlet outflow is in the brilliant tank of storage（4）It is interior to be blended into magma
Brilliant liquid is stored, the storage crystalline substance liquid with little particle crystal is from crystallizer（1）It stores brilliant liquid import and flows into crystallizer（1）, continue crystal growth,
So cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507054.5A CN108467051B (en) | 2018-05-24 | 2018-05-24 | Device and method for separating crystals in potassium chloride crystal slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507054.5A CN108467051B (en) | 2018-05-24 | 2018-05-24 | Device and method for separating crystals in potassium chloride crystal slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108467051A true CN108467051A (en) | 2018-08-31 |
| CN108467051B CN108467051B (en) | 2023-07-18 |
Family
ID=63261507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507054.5A Active CN108467051B (en) | 2018-05-24 | 2018-05-24 | Device and method for separating crystals in potassium chloride crystal slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108467051B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054294A (en) * | 2020-01-13 | 2020-04-24 | 中国科学院青岛生物能源与过程研究所 | Method for returning small crystal particles in discharged slurry of reactive crystallizer |
| CN114887347A (en) * | 2022-05-23 | 2022-08-12 | 青岛科技大学 | Method for extracting mature large crystal particles from crystallizer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1429596A (en) * | 1964-03-12 | 1966-02-25 | Allied Chem | Process for producing dense crystalline anhydrous sodium carbonate |
| US4160812A (en) * | 1977-09-20 | 1979-07-10 | Texasgulf Inc. | Multi-stage crystallization of sodium carbonate |
| CN104843745A (en) * | 2015-04-27 | 2015-08-19 | 青海国泰盐湖化肥有限公司 | Control method for granularity of potassium nitrate product produced through double decomposition |
| US20150329369A1 (en) * | 2014-05-19 | 2015-11-19 | Carbon Engineering Limited Partnership | Recovering a caustic solution via calcium carbonate crystal aggregates |
| CN205204845U (en) * | 2015-11-23 | 2016-05-04 | 金川集团股份有限公司 | Thin brilliant elimination and hierarchical recycling system of sodium hydrosulphite parting liquid |
| CN106693414A (en) * | 2017-01-06 | 2017-05-24 | 南京航空航天大学 | Heat-mass co-transfer evaporation and crystallization system and working method thereof |
| CN208617377U (en) * | 2018-05-24 | 2019-03-19 | 南京紫晶藤节能科技有限公司 | Crystal separator in potassium chloride magma |
-
2018
- 2018-05-24 CN CN201810507054.5A patent/CN108467051B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1429596A (en) * | 1964-03-12 | 1966-02-25 | Allied Chem | Process for producing dense crystalline anhydrous sodium carbonate |
| US4160812A (en) * | 1977-09-20 | 1979-07-10 | Texasgulf Inc. | Multi-stage crystallization of sodium carbonate |
| US20150329369A1 (en) * | 2014-05-19 | 2015-11-19 | Carbon Engineering Limited Partnership | Recovering a caustic solution via calcium carbonate crystal aggregates |
| CN104843745A (en) * | 2015-04-27 | 2015-08-19 | 青海国泰盐湖化肥有限公司 | Control method for granularity of potassium nitrate product produced through double decomposition |
| CN205204845U (en) * | 2015-11-23 | 2016-05-04 | 金川集团股份有限公司 | Thin brilliant elimination and hierarchical recycling system of sodium hydrosulphite parting liquid |
| CN106693414A (en) * | 2017-01-06 | 2017-05-24 | 南京航空航天大学 | Heat-mass co-transfer evaporation and crystallization system and working method thereof |
| CN208617377U (en) * | 2018-05-24 | 2019-03-19 | 南京紫晶藤节能科技有限公司 | Crystal separator in potassium chloride magma |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054294A (en) * | 2020-01-13 | 2020-04-24 | 中国科学院青岛生物能源与过程研究所 | Method for returning small crystal particles in discharged slurry of reactive crystallizer |
| CN114887347A (en) * | 2022-05-23 | 2022-08-12 | 青岛科技大学 | Method for extracting mature large crystal particles from crystallizer |
| CN114887347B (en) * | 2022-05-23 | 2023-11-17 | 青岛科技大学 | Method for extracting mature large crystal particles from crystallizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108467051B (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106115804B (en) | A kind of apparatus system for cobaltous sulfate efficient concentration and continuous crystallisation | |
| CN104192927B (en) | Phenol-acetone waste water evaporative desalination pretreating process | |
| CN208617377U (en) | Crystal separator in potassium chloride magma | |
| CN108467051A (en) | Crystal separator and method in potassium chloride magma | |
| CN107899266B (en) | A kind of continuous crystallisation process of Multistage Membranes control | |
| CN107032429A (en) | A kind of reverse osmosis thick water treatment system and handling process | |
| CN109289234B (en) | Device for evaporative crystallization and crystallization method of vitamin B6 | |
| CN109513232B (en) | Device for evaporative crystallization and crystallization method of ethyl maltol | |
| CN109289235A (en) | Device, ascorbic method for crystallising for evaporative crystallization | |
| CN108557894A (en) | A kind of manganese sulfate solution crystallization apparatus and method | |
| US3530924A (en) | Crystallization method and device | |
| US2827366A (en) | Crystallization apparatus | |
| CN109453539A (en) | For the device of evaporative crystallization, the method for crystallising of Sucralose | |
| CN108726578A (en) | Ferrous sulfate continuous crystallisation technique in a kind of production of sulfate process titanium dioxide | |
| CN108837550A (en) | A kind of xylitol vacuum continuous crystallisation process and system | |
| CN109646988A (en) | A kind of freezing and crystallizing goes out the control system and its control method of salt partial size | |
| CN207957789U (en) | A kind of manganese sulfate solution crystallization apparatus | |
| CN110860105A (en) | Equipment and method for producing inorganic salt with solubility changing along with temperature by using cooling crystallization | |
| CN110237558A (en) | A kind of integrated crystallization apparatus and method for crystallising with continuous fine crystal elimination circulation | |
| CN109809436A (en) | From the device and technique for extracting saltcake before the sinker of lepidolite production lithium salts in liquid | |
| CN207187133U (en) | Produce the integrated forced circulation crystallization evaporator and device of big crystal grain ammonium sulfate | |
| CN206746006U (en) | Discharging EGR for evaporator system | |
| US3424221A (en) | Apparatus and method for continuous crystallization by evaporation | |
| US2066577A (en) | Cooling apparatus | |
| CN109806613A (en) | A kind of continuous freezing and crystallizing device and its except the method to scab |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |