CN106693414B - Caloic simultaneous interpretation evaporation and crystallization system and its working method - Google Patents
Caloic simultaneous interpretation evaporation and crystallization system and its working method Download PDFInfo
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- CN106693414B CN106693414B CN201710009546.7A CN201710009546A CN106693414B CN 106693414 B CN106693414 B CN 106693414B CN 201710009546 A CN201710009546 A CN 201710009546A CN 106693414 B CN106693414 B CN 106693414B
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- 238000002425 crystallisation Methods 0.000 title claims abstract description 28
- 230000008025 crystallization Effects 0.000 title claims abstract description 28
- 238000001704 evaporation Methods 0.000 title claims abstract description 28
- 230000008020 evaporation Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 22
- 238000009835 boiling Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 45
- 239000012452 mother liquor Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 10
- 239000010413 mother solution Substances 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 2
- 235000019698 starch Nutrition 0.000 claims 2
- 238000010025 steaming Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 239000010970 precious metal Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/14—Evaporating with heated gases or vapours or liquids in contact with the liquid
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of caloic simultaneous interpretation evaporation and crystallization system and its working methods, belong to solution evaporative crystallization field.The system mainly includes the equipment such as air blower, air-introduced machine, heat and mass tank, heater, crystallizing tank, maturator, compressor, expansion valve.It is characterized by: in heat and mass tank, air and solution direct contact heat transfer mass transfer, solution evaporative crystallization；System adds maturator, and solution is promoted further to crystallize；Low boiling working fluid evaporates after absorbing the heat in maturator, after compressor compresses heat up, heats solution to be evaporated into heater, realizes the transfer of internal system energy.The method that the evaporation and crystallization system uses caloic simultaneous interpretation realizes the evaporative crystallization of solution under room temperature, and heating temperature is low, and precious metal consumption is small, and energy-saving effect is significant.The system is suitable for solubility as temperature increases and the evaporation and crystal process of increased solution.
Description
Technical field
The present invention devises a kind of caloic simultaneous interpretation evaporation and crystallization system and its working method, belongs to solution evaporative crystallization neck
Domain.
Background technique
Evaporative crystallization is that solution evaporation and concentration is made to reach supersaturation, thus the process precipitated crystal.It is industrial at present common
Evaporative crystallization technique mainly have multiple-effect evaporation crystallization and function of mechanical steam recompression (Mechanical Vapor
Recompression, MVR) evaporative crystallization technique.Both technologies belong to boiling type evaporation technique, need material solution
It is heated to fluidized state, since the quantity of solvent vaporized when evaporation is larger, evaporation process needs to consume a large amount of heating steam, energy
Consumption is big.In addition, explosive evaporation technology uses partition-wall heat transfer formula evaporator, need to consume the precious metal of a large amount of good effect of heat exchange
The cost of manufacture of material, evaporator is higher.
The energy consumption for how reducing evaporation and crystal process reduces the manufacturing cost of equipment, is urgently to be resolved at present ask
Topic.
Summary of the invention
The disadvantage that the present invention is high for existing explosive evaporation technology heating temperature, energy consumption is high, precious metal consumption is big, mentions
The caloic simultaneous interpretation evaporation and crystallization system that a kind of heating temperature is low out, low energy consumption, precious metal consumption is few.
A kind of caloic simultaneous interpretation evaporation and crystallization system, it is characterised in that: the system includes clear Recycling Mother Solution pump, heater, biography
Hot mass transfer tank, crystallizing tank, maturator, magma pump, densitometer, magma circulating pump, magma tank, centrifuge, crystal tank, mother liquor pump,
Compressor, expansion valve；Wherein heat and mass tank includes the gas distribution of the spray equipment in the portion that is disposed thereon, the filler at middle part and lower part
Device；Heat and mass tank includes upper air outlet, top solution inlet, lower air inlet and lower part taphole；Crystallization
Tank includes solution inlet, the clear mother liquor outlet in top and the outlet of lower part concentrated solution；Maturator includes that concentrated solution entrance, top magma enter
Mouth, the outlet of lower part magma, cold side input port and cold side outlet port；Densitometer includes magma entrance, qualified magma outlet and unqualified crystalline substance
Slurry outlet；Centrifuge includes magma entrance, crystal outlet and mother liquor outlet；Heater includes hot side entrance, hot side outlet, cold side
Entrance and cold side outlet port；Material inlet is connected with heater cold side input port, heater cold side outlet port and heat and mass tank top
Solution inlet is connected, and heat and mass tank lower part taphole is connected with crystallizing tank solution inlet, the clear mother liquor outlet in crystallizing tank top
It is pumped by clear Recycling Mother Solution and is connected with heater cold side input port, the outlet of crystallizing tank lower part concentrated solution and maturator concentrated solution entrance phase
Even, maturator lower part magma outlet is connected after magma pumps with densitometer magma entrance, and the unqualified magma outlet of densitometer is logical
It crosses magma circulating pump to be connected with maturator top magma entrance, the outlet of densitometer qualification magma is connected with magma tank entrance, magma
Tank outlet is connected with centrifuge magma entrance, and the outlet of centrifuge crystal is connected with crystal tank, and centrifuge mother liquor outlet passes through mother liquor
Pump is connected with heater cold side input port；Maturator cold side outlet port is connected by compressor with heater hot side entrance, heater heat
Side outlet is connected by expansion valve with maturator cold side input port.
The working method of the caloic simultaneous interpretation evaporation and crystallization system, which is characterized in that including the following course of work: air
It is flowed into from the lower air inlet of heat and mass tank, after heat and mass occurs with the low concentration solution sprayed from top to bottom, from biography
The upper air outlet of hot mass transfer tank is discharged into environment；Material flows into system from material inlet, clear with clear Recycling Mother Solution pump discharge
Low concentration solution is formed after the mixing of the mother liquor of mother liquor and mother liquor pump discharge, low concentration solution flows into the cold side of heater, absorbs it
It after the heat that hot side low boiling working fluid is released, flows into from heat and mass tank top solution inlet, and becomes in the effect of spray equipment
At fine drop, heat and mass then occurs with the air that flows from bottom to top in filler, moisture reduces temperature reduce after from
The outflow of heat and mass tank lower part taphole, into standing in crystallizing tank: the clear mother liquor on crystallizing tank top passes through clear Recycling Mother Solution
Pump flows into heater cold side；The concentrated solution of crystallizing tank lower part flows into maturator, to the low boiling working fluid heat release of its cold side after be precipitated
Crystal forms magma, and magma flows to densitometer by magma pump: when magma density is ineligible, magma is followed by magma
Ring pump again flows into maturator；When magma density is eligible, magma flows into magma tank, and the magma in magma tank flows into centrifugation
Machine is separated by solid-liquid separation: the crystal that centrifuge is isolated is stored in crystal tank；The mother liquor that centrifuge is isolated is pumped by mother liquor
The cold side of heater is flowed into, is so recycled；Low temperature low boiling working fluid is flowed into from maturator cold side input port, is absorbed wherein solution and is released
Heat after become Low Temperature Steam, Low Temperature Steam after compressor increasing temperature and pressure, from heater hot side entrance flow into, to its cold side
Low concentration solution goes out heat, and then expanded valve expansion, decrease temperature and pressure become initial cryogenic state, such cycle operation.
The caloic simultaneous interpretation evaporation and crystallization system, it is characterised in that: system further includes and heat and mass tank lower air
The connected air blower of entrance, or/and the air-introduced machine being connected with heat and mass tank upper air outlet.Above-mentioned caloic simultaneous interpretation evaporation knot
The working method of crystallographic system system, which is characterized in that including the following course of work: air blower and air-introduced machine, air can be arranged simultaneously
Under the double action of air blower blowing force and air-introduced machine suction, heat and mass tank is flowed through；Can also setting air blower, without setting
Air-introduced machine is set, air flows through heat and mass tank under the blowing force of air blower；Can also setting air-introduced machine, and be not provided with air blast
Machine, air flow through heat and mass tank under the suction of air-introduced machine.
The caloic simultaneous interpretation evaporation and crystallization system, it is characterised in that: blender is set in maturator.Mixing speed control
In reasonable range, prevent crystal from settling and being crushed.For the lolute crystallization process for being easy to crystallize, maturator can also be with
It is not provided with blender.
The method that the present invention uses caloic simultaneous interpretation realizes the evaporative crystallization of solution under room temperature, does not need for solution to be heated to
Fluidized state, low energy consumption, and precious metal consumption is small；System adds maturator, promotes solution further to tie by the type of cooling
It is brilliant；Low boiling working fluid evaporates after absorbing the heat in maturator, after compressor compresses heat up, heats into heater to be evaporated
Solution realizes the transfer of internal system energy.System has the advantages that consuming little energy, manufacturing cost are cheap, is suitable for molten
Xie Du increases and the evaporation and crystal process of increased solution with temperature.
Detailed description of the invention
Fig. 1 caloic simultaneous interpretation evaporation and crystallization system figure；
Figure label title: the clear Recycling Mother Solution pump of 1-；2- heater；3- spray equipment；4- filler；5- heat and mass tank；
6- distribution device；7- air-introduced machine；8- air blower；9- crystallizing tank；10- maturator；11- magma pump；12- densitometer；13- magma follows
Ring pump；14- magma tank；15- centrifuge；16- crystal tank；17- mother liquor pump；18- compressor；19- expansion valve；20- blender；
21- material inlet.
Specific implementation method
Fig. 1 is caloic simultaneous interpretation evaporation and crystallization system proposed by the present invention, and the course of work of system is illustrated referring to Fig. 1.
Air is flowed by air blower 8 from the lower air inlet of heat and mass tank 5, with the low concentration sprayed from top to bottom
After heat and mass occurs for solution, environment is discharged into from the upper air outlet of heat and mass tank 5 by air-introduced machine 7；
Initial soln flows into system from material inlet 21, goes out with the clear mother liquor and mother liquor pump 17 of 1 outlet of clear Recycling Mother Solution pump
Low concentration solution is formed after the mother liquor mixing of mouth, low concentration solution flows into the cold side of heater 2, absorbs its hot side low boiling working fluid
After the heat of releasing, flowed into from 5 top of heat and mass tank, and become fine drop in the effect of spray equipment 3, then in filler
Heat and mass occurs in 4 with the air flowed from bottom to top, moisture goes out after reducing temperature reduction from 5 lower part solution of heat and mass tank
Mouthful outflow, into standing in crystallizing tank 9: the clear mother liquor on 9 top of crystallizing tank passes through 1 inflow 2 cold side of heater of clear Recycling Mother Solution pump；
The concentrated solution of crystallizing tank (9) lower part flows into maturator 10, to the low boiling working fluid heat release of its cold side after precipitate crystal, formed brilliant
Slurry, magma flow to densitometer 12 by magma pump 11: when magma density is ineligible, magma passes through magma circulating pump 13 again
Secondary inflow maturator 10；When magma density is eligible, magma flows into magma tank 14, and the magma in magma tank 14 flows into centrifugation
Machine 15 is separated by solid-liquid separation: the crystal that centrifuge 15 is isolated is stored in crystal tank 16；The mother liquor that centrifuge 15 is isolated is logical
The cold side that mother liquor pump 17 flows into heater 2 is crossed, is so recycled.
Low temperature low boiling working fluid is flowed into from 10 cold side input port of maturator, becomes low temperature after absorbing the heat that wherein solution is released
Steam, Low Temperature Steam flow into, to its cold side, low concentration solution goes out after 18 increasing temperature and pressure of compressor from 2 hot side entrance of heater
Heat, then expanded valve 19 expands, and decrease temperature and pressure becomes initial cryogenic state, such cycle operation.
Claims (5)
1. a kind of caloic simultaneous interpretation evaporation and crystallization system, it is characterised in that:
The system includes clear Recycling Mother Solution pump (1), heater (2), heat and mass tank (5), crystallizing tank (9), maturator (10), crystalline substance
Stock pump (11), densitometer (12), magma circulating pump (13), magma tank (14), centrifuge (15), crystal tank (16), mother liquor pump
(17), compressor (18), expansion valve (19)；Wherein heat and mass tank (5) include the portion that is disposed thereon spray equipment (3), in
The filler (4) in portion and the distribution device (6) of lower part；
Heat and mass tank (5) includes upper air outlet, top solution inlet, lower air inlet and lower part taphole；Knot
Brilliant tank (9) includes solution inlet, the clear mother liquor outlet in top and the outlet of lower part concentrated solution；Maturator (10) include concentrated solution entrance,
Top magma entrance, the outlet of lower part magma, cold side input port and cold side outlet port；Densitometer (12) includes magma entrance, qualified magma
Outlet and the outlet of unqualified magma；Centrifuge (15) includes magma entrance, crystal outlet and mother liquor outlet；Heater (2) includes
Hot side entrance, hot side outlet, cold side input port and cold side outlet port；
Material inlet (21) is connected with heater (2) cold side input port, heater (2) cold side outlet port and heat and mass tank (3) top
Solution inlet is connected, and heat and mass tank (5) lower part taphole is connected with crystallizing tank (9) solution inlet, and crystallizing tank (9) top is clear
Mother liquor outlet pumps (1) by clear Recycling Mother Solution and is connected with heater (2) cold side input port, crystallizing tank (9) lower part concentrated solution outlet with
Maturator (10) concentrated solution entrance is connected, and the outlet of maturator (10) lower part magma is brilliant with densitometer (12) after magma pumps (11)
It starches entrance to be connected, the unqualified magma outlet of densitometer (12) passes through magma circulating pump (13) and maturator (10) top magma entrance
It is connected, the outlet of densitometer (12) qualification magma is connected with magma tank (14) entrance, and magma tank (14) outlet and centrifuge (15) are brilliant
It starches entrance to be connected, the outlet of centrifuge (15) crystal is connected with crystal tank (16), and centrifuge (15) mother liquor outlet is pumped by mother liquor
(17) it is connected with heater (2) cold side input port；
Maturator (10) cold side outlet port is connected by compressor (18) with heater (2) hot side entrance, heater (2) hot side outlet
It is connected by expansion valve (19) with maturator (10) cold side input port.
2. caloic simultaneous interpretation evaporation and crystallization system according to claim 1, it is characterised in that:
System further includes the air blower (8) being connected with heat and mass tank (5) lower air inlet, or/and with heat and mass tank (5)
The connected air-introduced machine (7) of upper air outlet.
3. caloic simultaneous interpretation evaporation and crystallization system according to claim 1, it is characterised in that: setting stirring in maturator (10)
Device (20).
4. a kind of working method of caloic simultaneous interpretation evaporation and crystallization system according to claim 1, which is characterized in that including with
The lower course of work:
Air is flowed into from the lower air inlet of heat and mass tank (5), is conducted heat with the low concentration solution sprayed from top to bottom
After mass transfer, environment is discharged into from the upper air outlet of heat and mass tank (5)；
Material flows into system from material inlet (21), clear mother liquor and mother liquor pump (17) outlet with clear Recycling Mother Solution pump (1) outlet
Mother liquor mixing after form low concentration solution, low concentration solution flows into the cold side of heater (2), absorbs its hot side low boiling working fluid
After the heat of releasing, flowed into from heat and mass tank (5) top solution inlet, and become tiny liquid in the effect of spray equipment (3)
Drop, then occurs heat and mass in filler (4) with the air flowed from bottom to top, and moisture passes after reducing temperature reduction from heat transfer
The outflow of matter tank (5) lower part taphole, stand into crystallizing tank (9): the clear mother liquor on crystallizing tank (9) top is followed by clear mother liquor
Ring pumps (1) and flows into heater (2) cold side；The concentrated solution of crystallizing tank (9) lower part flows into maturator (10), to the low boiling point of its cold side
It is precipitated crystal after working medium heat release, forms magma, magma flows to densitometer (12) by magma pump (11): when magma density is not met
When condition, magma again flows into maturator (10) by magma circulating pump (13)；When magma density is eligible, magma is flowed into
Magma tank (14), the magma in magma tank (14) flow into centrifuge (15) and are separated by solid-liquid separation: the crystalline substance that centrifuge (15) is isolated
Body is stored in crystal tank (16)；The mother liquor that centrifuge (15) is isolated flows into the cold side of heater (2) by mother liquor pump (17),
So circulation；
Low temperature low boiling working fluid is flowed into from maturator (10) cold side input port, becomes low temperature steaming after absorbing the heat that wherein solution is released
Vapour, Low Temperature Steam flow into, to its cold side low concentration solution after compressor (18) increasing temperature and pressure from heater (2) hot side entrance
Heat out, then expanded valve (19) expansion, decrease temperature and pressure become initial cryogenic state, such cycle operation.
5. the working method of caloic simultaneous interpretation evaporation and crystallization system according to claim 4, which is characterized in that further include following
The course of work: system further includes the air blower (8) being connected with heat and mass tank (5) lower air inlet, and with heat and mass tank
(5) the connected air-introduced machine (7) of upper air outlet；Double action of the air in air blower (8) blowing force and air-introduced machine (7) suction
Under, flow through heat and mass tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009546.7A CN106693414B (en) | 2017-01-06 | 2017-01-06 | Caloic simultaneous interpretation evaporation and crystallization system and its working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710009546.7A CN106693414B (en) | 2017-01-06 | 2017-01-06 | Caloic simultaneous interpretation evaporation and crystallization system and its working method |
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| Publication Number | Publication Date |
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| CN106693414A CN106693414A (en) | 2017-05-24 |
| CN106693414B true CN106693414B (en) | 2018-12-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107961555B (en) * | 2017-12-11 | 2020-11-20 | 江苏科鼐生物制品有限公司 | Liquid evaporation device and evaporation method |
| CN108467051B (en) * | 2018-05-24 | 2023-07-18 | 南京紫晶藤节能科技有限公司 | Device and method for separating crystals in potassium chloride crystal slurry |
| CN109966766A (en) * | 2019-03-15 | 2019-07-05 | 南京航空航天大学 | In conjunction with heat pump energy-conserving high-efficiency evaporating and crystallizing and air dehumidification system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4913943B2 (en) * | 2000-11-27 | 2012-04-11 | 幸信 小渡 | Sea salt production equipment |
| CN101874938A (en) * | 2009-12-07 | 2010-11-03 | 江苏乐科热工程设备有限公司 | Forced circulation continuous crystallization system with mechanical vapor recompression function |
| CN102430251A (en) * | 2010-09-29 | 2012-05-02 | 江苏乐科热工程设备有限公司 | Evaporation and concentration device for corrosive liquid material |
| CN102060691B (en) * | 2010-12-13 | 2013-05-15 | 日照鲁信金禾生化有限公司 | Continuous acidolysis process for calcium hydrogen citrate |
| CN102718717B (en) * | 2012-06-15 | 2015-03-11 | 河北鑫淘源环保科技有限公司 | Method for drying solid 1, 3-dihydroxytoluene-5, 5-dimethylhydantoin |
| CN102963913B (en) * | 2012-10-31 | 2014-08-27 | 株洲三特环保节能股份有限公司 | Evaporation and concentration process of sodium sulfite solution |
| CN205127450U (en) * | 2015-11-14 | 2016-04-06 | 河北博锐达数控科技有限公司 | Low temperature evaporated crystallizer |
| CN205472704U (en) * | 2016-04-06 | 2016-08-17 | 天齐锂业股份有限公司 | System for glauber's salt of production lithium hydroxide in -process carries out in succession freezing crystal separation |
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