CN109745727A - A kind of crystallization processes Process Energy stepped utilization method and the device for realizing this method - Google Patents
A kind of crystallization processes Process Energy stepped utilization method and the device for realizing this method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 86
- 238000002425 crystallisation Methods 0.000 title claims abstract description 43
- 230000008025 crystallization Effects 0.000 title claims abstract description 43
- 239000013078 crystal Substances 0.000 claims abstract description 93
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000005457 ice water Substances 0.000 claims abstract description 27
- 150000003839 salts Chemical class 0.000 claims abstract description 16
- 239000007790 solid phase Substances 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 239000012071 phase Substances 0.000 claims abstract description 11
- 239000007791 liquid phase Substances 0.000 claims abstract description 4
- 239000003507 refrigerant Substances 0.000 claims description 24
- 230000008676 import Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 16
- 230000008014 freezing Effects 0.000 description 15
- 238000007710 freezing Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a kind of crystallization processes Process Energy stepped utilization method and the devices of realization this method, include the following steps: that the stoste in separator is passed through crystallization host by (1), obtain two-phase solid-liquid fluid, two-phase solid-liquid fluid is obtained into solid phase and liquid phase by separator, ice crystal in solid phase is delivered to energy cascade utilization device, the salt discharge in solid phase；(2) energy cascade utilization device includes solid-liquid heat-exchanger rig, heat exchanger A, heat exchanger B and ice pond, ice crystal enters ice pond by solid-liquid heat-exchanger rig, after ice water in ice pond is followed by heat exchanger A and heat exchanger B, a part of ice water returns to ice pond, and another part ice water is discharged from drainpipe；Stoste to be processed is pre-chilled by heat exchanger A level-one, and after the secondary pre-cooling of solid-liquid heat-exchanger rig, into separator, the stoste in separator enters crystallization host.Cascaded utilization of energy method effective use ice crystal proposed by the present invention melts the cooling capacity generated, heats up stage by stage, the above-mentioned cooling capacity of cascade utilization.
Description
Technical field:
The invention belongs to heat integration technical fields, and in particular to a kind of crystallization processes Process Energy cascade utilization side
Method and the device for realizing this method.
Background technique:
The part water of freeze concentration process, solution is frozen into ice, and solution is concentrated；Refrigeration crystallization process, along with
Salt crystallization, which is precipitated, may also ice crystal precipitation.The product that these ice crystals not usually finally need is needed to be melted into water, be discharged
Or reuse.The thawing of these ice crystals can absorb a large amount of heat, if the ability that ice crystal melts heat absorption can be made good use of, tie reducing
The energy consumption of brilliant technical process.
Energy cascade utilization is a kind of normal method of Utilizing Energy Sources in Reason, sharp step by step from high to low according to energy grad
With, such as high-temperature steam is used to generate electricity, and after temperature reduces, is used to residential heating；For example cold energy of liquefied natural gas utilizes again, low
Temperature is used to be crushed rubber, plastics etc., and temperature is used for frozen food after increasing, temperature is high again to be used for air-conditioning.
Existing usual method is that ice crystal is melted into water and recycles its cooling capacity, such as certain concentration process generates -20 DEG C of ice crystals,
Ice crystal is melted into 0 DEG C or some higher of water, then goes pre-cooling stoste with these water, the cooling capacity that such method can provide does not have
It is reduced, but the grade of cooling capacity reduces, 0 DEG C is fallen below from -20 DEG C, the high-grade cooling capacity between -20 DEG C to 0 DEG C cannot get benefit
With also will appear a large amount of low-grade cooling capacity because of the case where nowhere can be used, waste.
Summary of the invention:
The object of the present invention is to provide a kind of crystallization processes Process Energy stepped utilization method and realize this method device,
Cascaded utilization of energy method effective use ice crystal sensible heat heating proposed by the present invention and the cooling capacity for melting generation, heat up stage by stage,
The above-mentioned cooling capacity of cascade utilization.
The object of the present invention is to provide a kind of crystallization processes Process Energy stepped utilization methods, include the following steps:
(1) stoste in separator is obtained two-phase solid-liquid fluid, will consolidated by making the crystallization host of stoste frozen cooling
Gas-liquid two-phase liquid is by separator, isolated solid phase and liquid phase from separator, and wherein solid phase includes ice crystal and salt, in solid phase
Ice crystal be delivered to energy cascade utilization device, the discharge of salt in solid phase；
(2) energy cascade utilization device includes solid-liquid heat-exchanger rig, heat exchanger A, heat exchanger B and ice pond, is obtained in step (1)
The ice crystal arrived enters ice pond after passing through solid-liquid heat-exchanger rig, after the ice water in ice pond is followed by heat exchanger A and heat exchanger B, one
Part ice water returns to ice pond, and another part ice water is discharged from drainpipe；Stoste to be processed is pre-chilled by heat exchanger A level-one, then passes through
After crossing the secondary pre-cooling of solid-liquid heat-exchanger rig, it is mixed into crystallization host into the stoste in separator, with separator, repeats step
(1) operation in.
Freezing and crystallizing, it be it is a kind of solution by freeze method crystallize into solid and part dope, realize substance
Separation, has generally comprised salt and ice crystal in solid, and in some technique, ice crystal is one of product, such as the purification of sewage；Some works
In skill, ice crystal be only technical process product, such as the production of salt or crystalline drug.But no matter ice crystal is product or process
Product, ice crystal are required to be further processed after melting, as recycle-water or discharge, and the ice crystal sensible heat containing solid-state of low temperature melts
Latent heat and liquid sensible heat, can be absorbed amount of heat.
The present invention melts the cooling capacity generated to efficiently use ice crystal, heats up stage by stage, the above-mentioned cooling capacity of cascade utilization.
Preferably, it is provided with refrigerant in heat exchanger B in step (2), the ice water in ice pond flows through heat exchanger B, will exchange heat
Refrigerant in device B is cooled down.Heat exchanger B efficiently uses the sensible heat of low temperature ice crystal, and refrigerant is subcooled, and improves unit mass
The refrigerating capacity of refrigerant improves the refrigerating capacity and efficiency of crystallization host.
It is a further object to provide a kind of device for realizing crystallization processes Process Energy stepped utilization method, packets
Crystallization host, separator and energy cascade utilization device are included, the crystallization host and separator are by being set to crystallization host
Pipeline between separator is connected, and is provided with ice crystal delivery pipe, the energy cascade utilization at the top of the separator
Device includes heat exchanger A, solid-liquid heat-exchanger rig, heat exchanger B and ice pond, and stoste feed inlet, institute are provided on the heat exchanger A
The inner tube one end for the solid-liquid heat-exchanger rig stated is provided with ice crystal import, and the other end is provided with ice crystal outlet, the solid-liquid heat exchange
Outer tube one end of device is provided with stoste outflow, and the other end is provided with stoste outlet；The ice crystal of the solid-liquid heat-exchanger rig into
Mouth is connect with ice crystal delivery pipe, and ice crystal outlet and the ice Chi Xianglian of the solid-liquid heat-exchanger rig, ice crystal pass through solid-liquid heat exchange and fills
It postpones and enters in ice pond, after the ice water in the ice pond is followed by heat exchanger A and heat exchanger B, a part of ice water returns to ice
Pond, another part ice water are discharged from drainpipe, and stoste enters heat exchanger A by the stoste feed inlet on heat exchanger A and carries out level-one
Pre-cooling enters solid-liquid heat-exchanger rig using the stoste outflow of solid-liquid heat-exchanger rig and carries out second level pre-cooling, the original after second level pre-cooling
Liquid enters separator by separator feed pipe, and the stoste in separator enters crystallization host by pipeline.
Preferably, the solid-liquid heat-exchanger rig is sleeve type structure, is made of inner and outer tubes, between inner and outer tubes
It is provided with collet, auger band is provided in the inner tube, stoste is provided in collet, ice crystal is pushed away auger band
To ice Chi Yundong under dynamic；The flow direction of the stoste and the direction of motion of ice crystal are opposite.
Compared with prior art, the invention has the following advantages that firstly, cascaded utilization of energy method proposed by the present invention
It efficiently uses ice crystal and melts the cooling capacity generated, heat up stage by stage, the above-mentioned cooling capacity of cascade utilization；Secondly, the present invention realizes that adverse current is changed
Heat, while heat transfer temperature difference is steady；Finally, the present invention can recycle to step the cold energy of ice crystal, stoste is made to be pre-chilled to 0 DEG C or less
(close to the freezing point temperature of solution), reduces the energy consumption of freezing and crystallizing.
Detailed description of the invention:
Fig. 1 is that different-energy utilizes process temperature contrast schematic diagram；
Fig. 2 is the P-h figure that refrigerant is subcooled that mode recovers energy；
Fig. 3 is the apparatus structure schematic diagram that the present invention realizes crystallization processes Process Energy stepped utilization method；
Fig. 4 is the energy cascade utilization device schematic diagram in Fig. 3；
Fig. 5 is solid-liquid heat-exchanger rig schematic diagram in Fig. 4；
Appended drawing reference meaning in figure: 1, host is crystallized；2, separator；3, energy cascade utilization device；4, connecting tube is fed；
5, discharge connecting tube；6, ice crystal delivery pipe；7, drainpipe；8, stoste feed inlet；9, separator feed pipe；10, salt discharging pipe, 11,
Solid-liquid heat-exchanger rig；12, heat exchanger A；13, heat exchanger B；14, ice pond；15, ice crystal import；16, stoste outflow；17, refrigerant
Outlet；18, refrigerant inlet；19, stoste outlet；20, inner tube；21, outer tube；22, collet；23, auger band.
Specific embodiment:
The following examples are further illustrations of the invention, rather than limiting the invention.
Embodiment 1:
As shown in Fig. 1~5, a kind of crystallization processes Process Energy stepped utilization method includes the following steps:
(1) stoste in separator 2 is obtained into two-phase solid-liquid fluid by making the crystallization host 1 of stoste frozen cooling, it will
Two-phase solid-liquid fluid is by separator 2, isolated solid phase and liquid phase from separator, and wherein solid phase includes ice crystal and salt, Gu
Ice crystal in phase is delivered to energy cascade utilization device 3, the salt discharge in solid phase；
(2) energy cascade utilization device 3 includes solid-liquid heat-exchanger rig 11, heat exchanger A 12, heat exchanger B 13 and ice pond 14,
Ice crystal obtained in step (1) enters ice pond 14 after passing through solid-liquid heat-exchanger rig 3, and the ice water in ice pond 14 is followed by heat exchanger
After A 12 and heat exchanger B 13, a part of ice water returns to ice pond 14, and another part ice water is from 7 outflow system of drainpipe；It is to be processed
Stoste is pre-chilled by 12 level-one of heat exchanger A, after solid-liquid heat-exchanger rig 11 2 times pre-coolings, into separator 2, and separates
Stoste in device 2 is mixed into crystallization host 1, repeats the operation in step (1).
Freezing and crystallizing, it be it is a kind of solution by freeze method crystallize into solid and part dope, realize substance
Separation, has generally comprised salt and ice crystal in solid, and in some technique, ice crystal is one of product, such as the purification of sewage；Some works
In skill, ice crystal be only technical process product, such as the production of salt or crystalline drug.But no matter ice crystal product or process
Product, ice crystal are required to be further processed after melting, as recycle-water or discharge, and ice crystal is melted into water, can be absorbed a large amount of
Heat.
The present invention melts the cooling capacity generated to efficiently use ice crystal, heats up stage by stage, the above-mentioned cooling capacity of cascade utilization.
In technology for freeze concentration, solution, which will be cooled to temperature below freezing, to freeze, it is desirable that into system
Stoste " low cost " as far as possible is down near freezing point, is then dropped to realization below freezing by mechanical refrigeration again and is frozen, so-called " low
Cost " herein refers to the mode without mechanical refrigeration, by other cooling capacity in recycling industrial process, realizes stoste cooling,
The energy of investment is few more than mechanical refrigeration mode.
When containing other solutes in water, the freezing point of solution will be reduced, the ice crystal formed in such solution is lower than 0 DEG C, false
If being-M to freezing point temperature, ice crystal rises to 0 DEG C from-M, is sensible heat endothermic process, and ice crystal heating is not melted, will using the cooling capacity
Mother liquor is cooled to 0 DEG C hereinafter, f → g process as shown in figure 1；Ice crystal melts at 0 DEG C, is latent heat endothermic process, will using the cooling capacity
Mother liquor cools down in advance, e → f process as shown in figure 1；After ice crystal is melted into 0 DEG C of water, N is risen to, is sensible heat endothermic process, Ke Yiyong
The refrigerant flowed out from condenser is subcooled, h → i process as shown in figure 1 improves the refrigeration energy of the unit refrigerant of refrigeration system
Power, such as Fig. 2, by the way that refrigerant q → s is subcooled, to improve refrigerating capacity t → r of refrigerant.
The heating of ice crystal first stage, i.e., ice crystal rises to 0 DEG C from-M, to control the surface temperature of ice crystal always 0 DEG C with
Under, it is desirable that the fluid temperature (F.T.) contacted with ice crystal surface is lower than 0 DEG C as far as possible, and the fluid is also allowed to be slightly above 0 DEG C, but to ensure with
Ice crystal does not melt when ice crystal heat exchange, is realized in the present invention by the solid-liquid heat-exchanger rig 11 in Fig. 3.Ice crystal melts rank
Section, ice crystal 0 DEG C melt, be latent heat endothermic process, which is mainly used to pre- cold mother liquor, if having it is more than needed, be also used for supercooling system
Cryogen.
Crystallization processes Process Energy cascade utilization is a link of freezing and crystallizing, realization crystallization processes proposed by the present invention
The device of Process Energy stepped utilization method such as Fig. 3, including crystallization host 1, separator 2 and energy cascade utilization device 3, crystallization
Host 1 and separator 2 pass through the pipeline being set between crystallization host 1 and separator 2 and are connected, and are provided at the top of separator 2
Ice crystal delivery pipe 6, energy cascade utilization device 3 include heat exchanger A 12, solid-liquid heat-exchanger rig 11, heat exchanger B 13 and ice pond
Stoste feed inlet is provided on 14, heat exchanger A 12, inner tube one end of solid-liquid heat-exchanger rig 11 is provided with ice crystal import 15, another
End is provided with ice crystal outlet, and outer tube one end of solid-liquid heat-exchanger rig 11 is provided with stoste outflow 16, and the other end is provided with stoste and goes out
Mouth 19；The ice crystal import 15 of solid-liquid heat-exchanger rig 11 is connect with ice crystal delivery pipe 6, the ice crystal outlet of solid-liquid heat-exchanger rig 11 and ice
Pond 14 is connected, and ice crystal enters in ice pond 14 after passing through solid-liquid heat-exchanger rig 11, and the ice water in ice pond 14 is followed by heat exchanger A
After 12 and heat exchanger B 13, a part of ice water returns to ice pond 14, and another part ice water is discharged from drainpipe 7, and stoste is by heat exchange
Stoste feed inlet 8 on device A 12 enters heat exchanger A 12 and carries out level-one pre-cooling, using solid-liquid heat-exchanger rig 11 stoste into
Mouth enters solid-liquid heat-exchanger rig 11 and carries out second level pre-cooling, and the stoste after second level pre-cooling passes through the stoste outlet of solid-liquid heat-exchanger rig 11
19 discharges, then separator 2 is entered by separator feed pipe 9, the stoste in separator 2 enters crystallization host 1 by pipeline, right
Stoste in separator 2 carries out frozen cooling.Heat exchanger A 12 and heat exchanger B 13 is liquid-liquid heat exchanger, is arranged on heat exchanger B
There are refrigerant inlet 18 and refrigerant outlet 17, refrigerant enters heat exchanger B 13 by refrigerant inlet, the ice in ice pond 14
Water flows through heat exchanger B 13, and the refrigerant in heat exchanger B 13 is cooled down, and refrigerant after cooling passes through refrigerant outlet
17 discharges.Host 1 is crystallized in the present embodiment refers to the machining process or heat exchanger that can make stoste cooling freezing, Huo Zheben
The cooling freezing mode that field technical staff is contemplated that, refrigerant be it may occur to persons skilled in the art that refrigerant
With.
The process flow of crystallization processes Process Energy stepped utilization method is in the present embodiment:
The crystallized host 1 of stoste in separator and the charging connecting tube 4 being arranged between separator 2 are flowed into from separator 2
Host 1 is crystallized, raw material frozen cooling is obtained two-phase solid-liquid fluid, two-phase solid-liquid fluid is by 1 He of crystallization host by crystallized host
The discharge connecting tube 5 being arranged between separator 2 is discharged into separator 2；Solid phase includes ice crystal and salt, since there are density contrast, ice crystals
It is lighter than solution, the top of separator 2 is floated to, is exported by the ice crystal at 2 top of separator and is connect with ice crystal delivery pipe 6, into energy
Source cascade utilization device 3, the salt of precipitation sink to 2 bottom of separator than solution weight, are discharged from salt discharging pipe 10；Ice crystal passes through ice crystal
Delivery pipe 6 enters energy cascade utilization device 3；Ice crystal enters the ice water after energy cascade utilization device 3 melts from 7 row of drainpipe
Out, stoste to be processed enters energy cascade utilization device 3 from stoste feed inlet 8, is entered after cooling by separator feed pipe 9
Separator 2 makes the stoste in separator 2 enter crystallization host 1 and carries out freezing processing by the charging connecting tube 4 on separator 2,
The cascade utilization for melting cooling capacity to ice crystal is set to form a cyclic process, the cooling capacity that can continuously recycle and melt using ice crystal.
In the present invention, stoste refers to NaCl solution, Na2SO4The inorganic salt solutions such as solution or other organic solutions, stoste in the present embodiment
For NaCl solution saliferous industrial wastewater as main component.
Energy cascade utilization device 3 is made of solid-liquid heat-exchanger rig 11, heat exchanger A 12, heat exchanger B 13 and ice pond 14.
There are four bursts of logistics in energy cascade utilization device 3, one is the ice crystal come out at the top of separator 2 is flowed through from ice crystal import 15
Solid-liquid heat-exchanger rig 11 enters ice pond 14；The second is the ice water melted exchanges heat followed by heat exchanger A 12 and heat exchanger B 13
Afterwards, a part of ice water returns to ice pond 14, and another part ice water flows out the cascaded utilization of energy system from drainpipe 7；The third is former
Liquid is pre-chilled after the pre-cooling of 12 level-one of heat exchanger A, through stoste outflow 16 by the second level of solid-liquid heat-exchanger rig 11, through solid-liquid
The stoste outlet 19 of heat-exchanger rig 11, after through being connected to the separator feed pipe 9 of stoste outlet 19 make second level be pre-chilled after original
Liquid enters separator 2, to enter crystallization host 1 by separator, carries out freezing processing；The fourth is the refrigerant in condenser
Heat exchanger B 13 is flowed through, refrigerant is over cooled.The cooling capacity that the setting of energy cascade utilization device 3 melts ice crystal obtains sufficiently
Utilization, heat transfer temperature difference is steady.
The cold water released from ice pond 14 first passes through heat exchanger A 12 and stoste is pre-chilled, and enters back into the cooling refrigeration of heat exchanger B 13
Agent.In the present invention, solid-liquid heat-exchanger rig 11 is sleeve type structure, is made of inner tube 20 and outer tube 21, is provided in inner tube 20
Auger band 23, ice crystal move under the promotion of auger band 23 to ice pond 14, and the stirring of auger band 23 can be strengthened
Stoste, the flow direction of stoste and the movement side of ice crystal are flowed in the collet 22 that ice crystal heat exchange, inner tube 20 and outer tube 21 are formed
To be it is opposite, the counterflow heat exchange of ice crystal and stoste can achieve abundant heat exchange, reduce the loss of energy.
In the present embodiment, stoste is containing NaCl solution saliferous industrial wastewater as main component, and freezing point of solution is -18
DEG C, the temperature of ice crystal is exactly -18 DEG C, and conventional method stoste is pre-chilled to 5 DEG C, the cascaded utilization of energy proposed using the present embodiment
Method stoste is pre-chilled to -13 DEG C, and the two differs 18 DEG C, can reduce refrigeration host computer using cascaded utilization of energy method and technology
Ability needs 22% or so, it will be able to energy conservation 22%.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention etc.
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (5)
1. a kind of crystallization processes Process Energy stepped utilization method, which comprises the steps of:
(1) stoste in separator is obtained into two-phase solid-liquid fluid, by solid-liquid two by making the crystallization host of stoste frozen cooling
Phase fluid is by separator, and isolated solid phase and liquid phase from separator, wherein solid phase includes ice crystal and salt, the ice in solid phase
Crystalline substance is delivered to energy cascade utilization device, the salt discharge in solid phase；
(2) energy cascade utilization device includes solid-liquid heat-exchanger rig, heat exchanger A, heat exchanger B and ice pond, obtained in step (1)
Ice crystal enters ice pond after passing through solid-liquid heat-exchanger rig, after the ice water in ice pond is followed by heat exchanger A and heat exchanger B, a part
Ice water returns to ice pond, and another part ice water is discharged from drainpipe；Stoste to be processed is pre-chilled by heat exchanger A level-one, using solid
After the secondary pre-cooling of liquid heat-exchanger rig, it is mixed into crystallization host into the stoste in separator, with separator, is repeated step (1)
In operation.
2. crystallization processes Process Energy stepped utilization method according to claim 1, which is characterized in that step is changed in (2)
Refrigerant is provided in hot device B, the ice water in ice pond flows through heat exchanger B, and the refrigerant in heat exchanger B is cooled down.
3. a kind of device for realizing crystallization processes Process Energy stepped utilization method described in claim 1, which is characterized in that packet
Crystallization host, separator and energy cascade utilization device are included, the crystallization host and separator are by being set to crystallization host
Pipeline between separator is connected, and is provided with ice crystal delivery pipe, the energy cascade utilization at the top of the separator
Device includes heat exchanger A, solid-liquid heat-exchanger rig, heat exchanger B and ice pond, and stoste feed inlet, institute are provided on the heat exchanger A
The inner tube one end for the solid-liquid heat-exchanger rig stated is provided with ice crystal import, and the other end is provided with ice crystal outlet, the solid-liquid heat exchange
Outer tube one end of device is provided with stoste outflow, and the other end is provided with stoste outlet；The ice crystal of the solid-liquid heat-exchanger rig into
Mouth is connect with ice crystal delivery pipe, and ice crystal outlet and the ice Chi Xianglian of the solid-liquid heat-exchanger rig, ice crystal pass through solid-liquid heat exchange and fills
It postpones and enters in ice pond, after the ice water in the ice pond is followed by heat exchanger A and heat exchanger B, a part of ice water returns to ice
Pond, another part ice water are discharged from drainpipe, and stoste enters heat exchanger A by the stoste feed inlet on heat exchanger A and carries out level-one
Pre-cooling enters solid-liquid heat-exchanger rig using the stoste outflow of solid-liquid heat-exchanger rig and carries out second level pre-cooling, the original after second level pre-cooling
Liquid enters separator by separator feed pipe, and the stoste in separator enters crystallization host by pipeline.
4. the device according to claim 3 for realizing crystallization processes Process Energy stepped utilization method, which is characterized in that institute
The solid-liquid heat-exchanger rig stated is made of inner and outer tubes, and collet is provided between inner and outer tubes, is provided in the inner tube
Auger band is provided with stoste in collet, and ice crystal is under the promotion of auger band to ice Chi Yundong.
5. the device according to claim 4 for realizing crystallization processes Process Energy stepped utilization method, which is characterized in that institute
The flow direction for the stoste stated and the direction of motion of ice crystal are opposite.
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| CN107162290A (en) * | 2016-03-07 | 2017-09-15 | 露丝安机械设备（上海）有限公司 | The low temperature concentration device and method of ammonium sulfate waste water |
| CN207871592U (en) * | 2017-11-08 | 2018-09-18 | 中国科学院广州能源研究所 | A kind of device for realizing crystallization processes Process Energy cascade utilization |
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2017
- 2017-11-08 CN CN201711087944.7A patent/CN109745727A/en active Pending
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|---|---|---|---|---|
| GB979963A (en) * | 1961-08-22 | 1965-01-06 | John William Pike | Improved method and apparatus for water purification by crystallization |
| CN104803433A (en) * | 2015-04-22 | 2015-07-29 | 中科合成油技术有限公司 | Method of freezing, concentrating and treating saline wastewater |
| CN107162290A (en) * | 2016-03-07 | 2017-09-15 | 露丝安机械设备（上海）有限公司 | The low temperature concentration device and method of ammonium sulfate waste water |
| CN207871592U (en) * | 2017-11-08 | 2018-09-18 | 中国科学院广州能源研究所 | A kind of device for realizing crystallization processes Process Energy cascade utilization |
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Application publication date: 20190514 |