CN206767852U - A kind of recycling and processing device of carboxylate industrial production wastewater - Google Patents
A kind of recycling and processing device of carboxylate industrial production wastewater Download PDFInfo
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- CN206767852U CN206767852U CN201720564046.5U CN201720564046U CN206767852U CN 206767852 U CN206767852 U CN 206767852U CN 201720564046 U CN201720564046 U CN 201720564046U CN 206767852 U CN206767852 U CN 206767852U
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Abstract
The utility model discloses a kind of recovery processing technique of carboxylate industrial production wastewater, including links such as salting-out extraction, crystallisation by cooling, charcoal absorption and MVR crystallizations, technique can be directed to the waste water that COD is 50000 300000mg/L and carry out zero discharge treatment, waste water COD after processing is reduced to 68mg/L, complies fully with national grade one discharge standard；This technique crystallizes the production waste water of organic carboxyl acid ethyl ester by salting-out extraction, crystallisation by cooling, charcoal absorption and MVR, organic carboxyl acid ethyl ester in organic wastewater and small organic molecule ethanol etc. are separated, and it is fully used, final salting-out agents recycle in whole processing procedure, the effect of zero-emission is reached, avoid in existing waste water treatment process, secondary pollution caused by the discharge of waste residue.
Description
Technical field
The invention belongs to industrial wastewater to recycle technical field, is related to Industry Waste caused by a kind of production carboxylate product
The recovery processing technique of water, and in particular to the recycling of organic carboxyl acid ethyl ester industrial wastewater.
Background technology
In the last few years, the chemical industry in China was rapidly developed, and esterification waste water caused by chemical enterprise also constantly increases
More, environmental pollution forms great threat.Green, the production theory of energy-saving and environmental protection are advocated according to China, it is necessary to are strengthened to ester
Change the processing of waste water.
The production technology of organic carboxyl acid class ethyl ester mainly includes following two：First, direct esterification：By organic carboxyl acid and second
Alcohol direct esterification under the catalysts such as the concentrated sulfuric acid synthesizes organic carboxyl acid class ethyl ester, and the technique is current domestic widely used
Production technology, sulfuric acid are present in reaction system, have pollution to environment.For a long time, researcher is in terms of catalyst and raw
Substantial amounts of work has been done in terms of production. art improvement, has such as used acid cation exchange resin, molecular sieve, heteropoly acid and solid super-strong acid
Etc. replacing sulfuric acid.2nd, sour alkene esterification addition process：Esterification addition is carried out using organic carboxyl acid and ethene, the technique relative to
For other techniques, raw material utilizes reasonable, wide material sources.But due to direct esterification using the concentrated sulfuric acid as catalyst, valency
Lattice are cheap, technology maturation, and Chinese large-scale production process is most to be esterified method for organic carboxyl acid, welcomes at random to using this production
Waste water is recycled caused by technique.
At present, the processing to this production waste water is mainly by biological treatment, physical treatment process and method of chemical treatment, for
Biological treatment, foreign countries' processing organic carboxyl acid class ethyl ester production Treating Industrial Wastewater are mainly anaerobism batch process method, first steamed
Rear Fenton oxidation method is evaporated, reduces COD in waste water.Domestic enterprise has carried out one referring especially to the way of the type of industry of foreign countries
Fixed optimization, main method include：Using FBOF technologies, i.e., carried out by flotation, biofiltration, catalytic ozonation, filtering
Further processing is carried out in the processing of esterification waste water, the water outlet to second pond；Carried out using " catalytic oxidation, pure oxygen aeration " technology
Processing.Although Biochemical method method cost is relatively low, floor space is larger, and required time is longer, the operation requirement to technology
It is higher.For bioremediation, it is difficult to obtain preferable water quality treatment that anaerobism, which is used alone, or aerobic process is used alone, together
When waste water in contained organic carboxyl acid class ethyl ester and ethanol can not be recycled utilization, wastewater treatment it is less economical.For
Physical treatment process, main is exactly processing, the processed waste water such as to be filtered, settled to waste water to be extremely difficult to drainage requirement, so
It is general not to adopt.For method of chemical treatment, appropriate additional chemical reagent is selected generally directed to waste water system, to reach sewage
Discharge standard, such a method efficiency high, quick result, but problems faced is can also exist to give up using method of chemical treatment at present
The problem of product discharge, the discharge of waste product can still pollute to environment.
The content of the invention
Goal of the invention：Present invention aims in view of the shortcomings of the prior art, there is provided a kind of easy to operate, efficiency high and
The recovery processing technique and device of the carboxylate industrial production wastewater of secondary pollution will not be caused to environment.
Technical scheme：The invention discloses a kind of carboxylate industrial production wastewater recovery processing technique, it is including as follows
Step：
（1）Production waste water is imported in mixing kettle, and adds salting-out extraction agent under agitation to small point in waste water
Sub- organic matter carries out salting-out extraction, and 2 ~ 4 h are persistently stirred after charging, then imports in phase-splitter stand by system and divides
Phase, it is the small molecule salt division thing aqueous solution that the upper organic phase after split-phase, which is produced to product holding vessel, lower floor's aqueous phase, is produced to water
Phase surge tank；
（2）By producing aqueous phase in aqueous phase surge tank, and it is conducted into condenser and carries out heat exchange with cooling agent, through cooling
Salting-out extraction agent crystallizes precipitation from aqueous phase afterwards, and crystallized product is produced to crystal salt storage tank, in crystal salt storage tank
Crystal salt is sent into mixing kettle, and extract imports demineralized water storage tank；
（3）Waste water in demineralized water storage tank is pumped into activated carbon adsorber group, the waste water after absorption is adopted from top
Go out to treating effluent storage tank, and by treating that effluent storage tank is imported in MVR crystallizing evaporators, remove saltouing of containing in waste water
Agent；Waste water enters after heater is heated to enter in crystallizer and crystallized in MVR crystallizing evaporator processing procedures, and vapor evaporation is adopted
Go out into compressor and carry out pressurization heating, as the thermal source of heater, cyclic heating wastewater；Vapor after cooling is as up to standard
Discharge of wastewater, the magma in crystallizer, which is discharged from crystalliser feet and is sent into centrifuge, further separates salting-out extraction agent, separates
Liquid afterwards is imported in demineralized water storage tank；Salt crystal after separation is sent into mixing kettle.
Further, the carboxylate is organic carboxyl acid ethyl ester, and the small organic molecule is ethanol.
Further, to improve effect of saltouing, the salting-out extraction agent is sodium carbonate, sodium sulphate, potassium nitrate or potassium sulfate
In one or more of mixing.
Further, step（1）The input amount of middle salting-out extraction is 130 ~ 550 g/L.
Further, step（2）Coolant temperature≤- 20 DEG C in middle condenser.
Present invention also offers the processing unit for above-mentioned handling process, including the storage of mixing kettle of saltouing, phase-splitter, product
Deposit tank, aqueous phase surge tank, condenser, crystal salt storage tank, demineralized water storage tank, activated carbon adsorber group, treat effluent store
Tank, heater, compressor, crystallizer and centrifuge, industrial wastewater pipeline and fresh salting-out extraction agent pipeline access saltout it is mixed
Kettle is closed, the outlet of the mixing kettle of saltouing accesses the phase-splitter, the organic phase outlet access product holding vessel of the phase-splitter
In, the aqueous phase outlet access aqueous phase surge tank of phase-splitter；The outlet access condenser of the aqueous phase surge tank, the condenser
Solid-phase outlet accesses crystal salt storage tank, the outlet access mixing kettle of the crystallization storage tank, the liquid-phase outlet access of condenser
In desalination effluent storage tank, the outlet of the desalination effluent storage tank accesses activated carbon adsorber group, the activated carbon through water pump
Effluent storage tank is treated in the top exit access of adsorption tower group, and the outlet for treating effluent storage tank is accessed in MVR evaporators
Heater, the heater outlet access crystallizer, the crystallizer gaseous phase outlet access compressor, steam is pressurizeed
It is sent into after heating in heater and waste water circulation is heated, is discharged after condensed steam liquefied, the magma outlet of the crystallizer
Centrifuge is accessed, the liquid phase of the centrifuge is imported in demineralized water storage tank, in solid phase access mixing kettle.
Further, to improve waste water treatment efficiency, the activated carbon adsorber group includes 2 ~ 4 activity parallel with one another
Charcoal adsorption tower.
Further, the operation of the whole wastewater treatment equipment of large volume impurity effect in waste water, the mixing kettle are avoided
The porch of upper industrial wastewater sets filter.
Further, for ease of the maintenance of device, the filter is that the porch for being installed on industrial wastewater is replaced
Formula filter pipe is changed, the filter pipe is connected with industrial wastewater pipeline.
Beneficial effect：（1）Present invention process can be directed to the waste water that COD is 50000-300000mg/L and carry out at zero-emission
Manage, the waste water COD after processing is reduced to 68mg/L, complies fully with national grade one discharge standard；This technique is by organic carboxylic
The production waste water of acetoacetic ester is crystallized by salting-out extraction, crystallisation by cooling, charcoal absorption and MVR, by the machine in organic wastewater
Carboxylic acid, ethyl ester and small organic molecule ethanol etc. are separated, and are fully used, and final salting-out agents are entirely being located
Recycled during reason, reached the effect of zero-emission, avoided in existing waste water treatment process, caused by the discharge of waste residue
Secondary pollution；（2）Using processing unit of the present invention, operational reliability is high, sets filter in the porch of mixing kettle, avoids
Large volume impurity ensures that processing procedure is smoothed out to abolishing the harmful effect of processing system in waste water；（3）It is living in the present apparatus
Property charcoal is handled after absorption, then by De contamination, and the small organic molecule being on the one hand desorbed can be with recycling, the opposing party
Activated carbon after face is desorbed can again put into activated carbon adsorber group and recycle, environmentally friendly no pollution；（4）Using this work
Skill processing waste water operations are easy, and energy-conserving and environment-protective, processing cost is low and treatment effeciency is high, suitable for industrialization promotion.
Brief description of the drawings
Fig. 1 is the overall structure diagram of apparatus of the present invention；
Wherein：1st, saltout mixing kettle, 2, phase-splitter, 3, product holding vessel, 4, aqueous phase surge tank, 5, condenser, 6, crystallization
Salt storage tank, 7, demineralized water storage tank, 8, activated carbon adsorber group, 9, treat effluent storage tank, 10, heater, 11, compression
Machine, 12, crystallizer, 13, centrifuge, 14, replaceable filter pipe.
Embodiment
Technical solution of the present invention is described in detail below by accompanying drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment 1：The recycling and processing device of carboxylate industrial production wastewater provided by the invention, including mixing kettle 1 of saltouing,
Phase-splitter 2, product holding vessel 3, aqueous phase surge tank 4, condenser 5, crystal salt storage tank 6, demineralized water storage tank 7, activated carbon are inhaled
Attached tower group 8, treat effluent storage tank 9, heater 10, compressor 11, crystallizer 12 and centrifuge 13, industrial wastewater pipeline a and
Fresh salting-out extraction agent line b accesses mixing kettle 1 of saltouing, and the outlet access phase-splitter 2 for mixing kettle 1 of saltouing, phase-splitter 2 has
Machine is mutually exported in access product holding vessel 3, the aqueous phase outlet access aqueous phase surge tank 4 of phase-splitter 2；The outlet of aqueous phase surge tank 4
Condenser 5 is accessed, the solid-phase outlet access crystal salt storage tank 6 of condenser 5, the outlet of crystallization storage tank 6 accesses mixing kettle 1,
In the liquid-phase outlet access desalination effluent storage tank 7 of condenser 5, the outlet of desalination effluent storage tank 7 accesses activated carbon through water pump
Adsorption tower group 8, the top exit access of activated carbon adsorber group 8 treat effluent storage tank 9, treat the outlet of effluent storage tank 9
The heater 10 accessed in MVR evaporators, the outlet access crystallizer 12 of heater 10, the gaseous phase outlet access pressure of crystallizer 12
Contracting machine 11, waste water circulation is heated by being sent into after steam pressurization heating in heater 10, discharges, ties after condensed steam liquefied
The magma outlet access centrifuge 13 of brilliant device 12, the liquid phase of centrifuge 13 are imported 7 in demineralized water storage tank, solid phase access mixing kettle
In 1.
Activated carbon adsorber group includes 3 activated carbon adsorbers parallel with one another, the waste water warp in desalination effluent storage tank
Water pump imports the bottom inlet of activated carbon adsorber group, and the waste water after absorption at the top of adsorption tower by discharging；It is industrial on mixing kettle
The porch of waste water sets replaceable filter pipe 14, and filter pipe is connected with industrial wastewater pipeline, and the design avoids waste water
In the whole wastewater treatment equipment of large volume impurity effect operation.
The industrial production wastewater of Ethyl formate is handled using above-mentioned processing unit, it is specific as follows：25 DEG C of formic acid
Ethyl ester is produced industrial wastewater and added with 500L/h flow rate in mixing kettle, and waste water COD 241000mg/L, wherein Ethyl formate contain
Measure 80.0 g/L, COD contribution margin 121000mg/L；Ethanol content 57.4g/L, COD contribution margin 120000mg/L；It is disposable to add
Salting-out extraction agent sodium carbonate, dosage 107.5kg；Handled by following steps：
（1）Salting-out extraction
Ethyl formate produces industrial wastewater and enters mixing kettle jointly with salting-out extraction agent sodium carbonate, to split-phase after being sufficiently stirred
Device is stood, split-phase, organic phase and aqueous phase occurs two layers up and down, and wherein organic phase is high-purity Ethyl formate, is produced to first
Acetoacetic ester products pot；Aqueous phase is mainly to remove ethanol-saline solution of Ethyl formate, is produced to aqueous phase surge tank.
（2）Crystallisation by cooling
The aqueous phase produced by aqueous phase surge tank is exchanged heat with -30 DEG C of freezing calcium chloride water within the condenser, warp
Cooling, salting-out extraction agent sodium carbonate crystallize precipitation from aqueous phase, produce to sodium carbonate and crystallize storage tank；Ethanol after desalination is water-soluble
Liquid enters demineralized water storage tank.
Wherein it is recycled by the sodium carbonate of sodium carbonate crystallization storage tank extraction and adds to mixing kettle, as salting-out extraction agent for being
Used in system circulation.
（3）Charcoal absorption
Coconut husk cylinder activated carbon adsorber group is delivered to through pump by the ethanol water that demineralized water storage tank produces, ethanol exists
It is separated from the water in coconut husk cylinder activated carbon adsorber group after coconut husk cylinder charcoal absorption, the water for removing ethanol is justified from coconut husk
Produced in post activated carbon adsorber group to treating effluent storage tank.
Wherein, the coconut husk cylinder activated carbon of saturation absorption dries desorption in the case where vacuum is 40kPa, justifies from saturation coconut husk
The ethanol being desorbed in post activated carbon can be recycled for use as the raw material of ethyl acetate.
（4）MVR is crystallized
Effluent is treated from absorption overhead extraction, salt content is below standard after testing.Carried out into MVR crystal systems further
Crystallization：By treat effluent storage tank extraction treat that effluent enters heater, with through compressor pressurization heat up after vapor enter
Row heat exchange, part are vaporized, and crystallization is evaporated into crystallizer, and the magma after crystallization is discharged from crystalliser feet, through centrifuge
Salting-out extraction agent is discharged after separation, wherein from the steam of crystallization top extraction, pressurizes and heats up into compressor, as heater plus
Heat treats the thermal source of effluent, and circulating-heating treats effluent, is discharged after the vapor cooling after heat exchange as waste water up to standard.
After testing, Na in effluent is treated+Content is 9800mg/L, can directly be discharged；Treat what is stored in effluent storage tank
Waste water, COD 83mg/L, meets national grade one discharge standard.
Embodiment 2：The processing unit that the present embodiment uses is essentially identical, and its difference is, activated carbon is inhaled in the present embodiment
Attached tower group includes 2 activated carbon adsorbers parallel with one another.
Processing using said apparatus Dichlorodiphenyl Acetate ethyl ester production industrial wastewater is specific as follows：20 DEG C of ethyl acetate production work
Industry waste water is added in mixing kettle with 800L/h flow rate, waste water COD 140900mg/L, wherein ethyl acetate content 50g/L, COD
Contribution margin 90900mg/L；Ethanol content 24g/L, COD contribution margin 50000mg/L；It is disposable to add salting-out extraction agent sodium sulphate,
Dosage is 240kg.Handled by following steps：
（1）Salting-out extraction
Ethyl acetate produces industrial wastewater and enters mixing kettle jointly with salting-out extraction agent sodium sulphate, to split-phase after being sufficiently stirred
Device is stood, split-phase, organic phase and aqueous phase occurs two layers up and down, and wherein organic phase is high-purity ethyl acetate, is produced to vinegar
Acetoacetic ester products pot；Aqueous phase is mainly to remove ethanol-saline solution of ethyl acetate, is produced to aqueous phase surge tank.
（2）Crystallisation by cooling
The aqueous phase produced by aqueous phase surge tank is exchanged heat with -30 DEG C of freezing calcium chloride waters within the condenser, through cold
But, salting-out extraction agent sodium sulphate crystallizes precipitation from aqueous phase, produces to sulfate crystal storage tank；Ethanol water after desalination
Into demineralized water storage tank.
The sodium sulphate wherein produced by sulfate crystal storage tank is recycled and adds to mixing kettle, as salting-out extraction agent for being
Used in system circulation.
（3）Charcoal absorption
Coconut husk cylinder activated carbon adsorber group is delivered to through pump by the ethanol water that demineralized water storage tank produces, ethanol exists
In coconut husk cylinder activated carbon adsorber group, it is separated from the water after coconut husk cylinder charcoal absorption, removes the water of ethanol from coconut husk
Produced in cylinder activated carbon adsorber group to treating effluent storage tank.
The coconut husk cylinder activated carbon of saturation absorption dries desorption in the case where vacuum is 20kPa, from saturation coconut husk cylinder activity
The ethanol being desorbed in charcoal can be recycled for use as the raw material of ethyl acetate.
（4）MVR is crystallized
Effluent is treated from absorption overhead extraction, salt content is below standard after testing, is carried out into MVR crystal systems further
Crystallization：By treat effluent storage tank extraction treat that effluent enters heater, with through compressor pressurization heat up after vapor enter
Row heat exchange, part are vaporized, and crystallization is evaporated into crystallizer, and the magma after crystallization is discharged from crystalliser feet, through centrifuge
Salting-out extraction agent is discharged after separation, wherein from the steam of crystallization top extraction, pressurizes and heats up into compressor, as heater plus
Heat treats the thermal source of effluent, and circulating-heating treats effluent, is discharged after the vapor cooling after heat exchange as waste water up to standard.
After testing, Na in waste water up to standard+Content is 8000mg/L, can directly be discharged；Treat what is stored in effluent storage tank
Waste water, COD 79mg/L, meets national grade one discharge standard.
Embodiment 3：The processing unit that the present embodiment uses is essentially identical, and its difference is, activated carbon is inhaled in the present embodiment
Attached tower group includes 4 activated carbon adsorbers parallel with one another.
The processing for producing industrial wastewater to ethyl acrylate using said apparatus is specific as follows：30 DEG C of ethyl acrylate life
Produce industrial wastewater and mixing kettle, waste water COD 81500mg/L are added with 1000L/h flow rate；Wherein ethyl acrylate content 11.2g/
L, COD contribution margins 21500mg/L；Ethanol content 28.7g/L, COD contribution margin 60000mg/L；Intermittence adds salting-out extraction agent
Potassium sulfate, dosage 130kg.Handled by following steps：
（1）Salting-out extraction
Ethyl acrylate produces industrial wastewater and enters mixing kettle jointly with salting-out extraction agent potassium sulfate, extremely divides after being sufficiently stirred
Phase device is stood, split-phase, organic phase and aqueous phase occurs two layers up and down, and wherein organic phase is high-purity propylene acetoacetic ester, extraction
To ethyl acrylate storage tank；Aqueous phase is mainly to remove ethanol-saline solution of ethyl acrylate, is produced to aqueous phase surge tank.
（2）Crystallisation by cooling
The aqueous phase produced by aqueous phase surge tank is exchanged heat with -35 DEG C of freezing glycol waters within the condenser, through cold
But, salting-out extraction agent potassium sulfate crystallizes precipitation from aqueous phase, produces to potassium sulfate and crystallizes storage tank；Ethanol water after desalination
Into demineralized water storage tank.
Mixing kettle is added to by the potassium sulfate of potassium sulfate crystallization storage tank extraction is recyclable, is followed as salting-out extraction agent for system
Used in ring.
（3）Charcoal absorption
By the ethanol water that demineralized water storage tank 7 produces coconut husk cylinder activated carbon adsorber group, ethanol are delivered to through pump
In coconut husk cylinder activated carbon adsorber group, it is separated from the water after coconut husk cylinder charcoal absorption, removes the water of ethanol from coconut palm
Produced in shell cylinder activated carbon adsorber group to effluent storage tank to be discharged.
The coconut husk cylinder activated carbon of saturation absorption dries desorption in the case where vacuum is 15kPa, from saturation coconut husk cylinder activity
The ethanol being desorbed in charcoal can be recycled for use as the raw material of ethyl acrylate.
（4）MVR is crystallized
Effluent is treated from absorption overhead extraction, salt content is below standard after testing.Carried out into MVR crystal systems further
Crystallization：By treat effluent storage tank extraction treat that effluent enters heater, with through compressor pressurization heat up after vapor enter
Row heat exchange, part are vaporized, and crystallization is evaporated into crystallizer, and the magma after crystallization is discharged from crystalliser feet, through centrifuge
Salting-out extraction agent is discharged after separation, wherein from the steam of crystallization top extraction, pressurizes and heats up into compressor, as heater plus
Heat treats the thermal source of effluent, and circulating-heating treats effluent, is discharged after the vapor cooling after heat exchange as waste water up to standard.
After testing, K in waste water up to standard+Content is 300mg/L, can directly be discharged；That treats to store in effluent storage tank gives up
Water, COD 68mg/L, meets national grade one discharge standard.
The effect of sewage no pollution discharge is can reach using handling process of the present invention and processing unit, has fully demonstrated environment
The characteristics of friendly, the material after processing separates can reuse, improve the utilization rate of material, reduce overall be produced into
This, the operational reliability of the present apparatus is high, and easy to operate, energy-conserving and environment-protective, processing cost is low and treatment effeciency is high, is pushed away suitable for industrialization
Extensively.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from
Various changes can be made in the form and details for it.
Claims (4)
- A kind of 1. recycling and processing device of carboxylate industrial production wastewater, it is characterised in that：Including mixing kettle of saltouing, phase-splitter, Product holding vessel, aqueous phase surge tank, condenser, crystal salt storage tank, demineralized water storage tank, activated carbon adsorber group, treat waste discharge Water storage tank, heater, compressor, crystallizer and centrifuge, industrial wastewater pipeline and fresh salting-out extraction agent pipeline access Saltout mixing kettle, the outlet of the mixing kettle of saltouing accesses the phase-splitter, the organic phase outlet access product of the phase-splitter In holding vessel, the aqueous phase outlet access aqueous phase surge tank of phase-splitter；The outlet access condenser of the aqueous phase surge tank, it is described cold The solid-phase outlet access crystal salt storage tank of condenser, the outlet access mixing kettle of the crystallization storage tank, the liquid phase of condenser go out In mouth access desalination effluent storage tank, the outlet of the desalination effluent storage tank accesses activated carbon adsorber group through water pump, described Effluent storage tank is treated in the top exit access of activated carbon adsorber group, and the outlet access MVR for treating effluent storage tank steams The heater in device is sent out, the outlet access crystallizer of the heater, the gaseous phase outlet access compressor of the crystallizer, will be steamed It is sent into after vapour pressurization heating in heater and waste water circulation is heated, is discharged after condensed steam liquefied, the crystalline substance of the crystallizer Slurry outlet access centrifuge, the liquid phase of the centrifuge are imported in demineralized water storage tank, in solid phase access mixing kettle.
- 2. device according to claim 1, it is characterised in that：The activated carbon adsorber group is parallel with one another including 2 ~ 4 Activated carbon adsorber.
- 3. device according to claim 1, it is characterised in that：The porch of industrial wastewater sets filtering on the mixing kettle Device.
- 4. device according to claim 3, it is characterised in that：The filter is the porch for being installed on industrial wastewater Replaceable filter pipe, the filter pipe is connected with industrial wastewater pipeline.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514754A (en) * | 2018-03-29 | 2018-09-11 | 昆山三环保科技有限公司 | A kind of MVR novel crystallizations device goes out salt system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514754A (en) * | 2018-03-29 | 2018-09-11 | 昆山三环保科技有限公司 | A kind of MVR novel crystallizations device goes out salt system |
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Address after: 210023 No. 6 Wenlan Road, Xianlin University City, Nanjing, Jiangsu Province Patentee after: China Construction Installation Group Co., Ltd. Address before: 210023 No. 6 Wenlan Road, Xianlin University City, Nanjing, Jiangsu Province Patentee before: China Construction Industrial Equipment Installation Co., Ltd. |
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