CN107349618A - A kind of titanium dioxide vacuum crystallization device - Google Patents
A kind of titanium dioxide vacuum crystallization device Download PDFInfo
- Publication number
- CN107349618A CN107349618A CN201710635977.4A CN201710635977A CN107349618A CN 107349618 A CN107349618 A CN 107349618A CN 201710635977 A CN201710635977 A CN 201710635977A CN 107349618 A CN107349618 A CN 107349618A
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- China
- Prior art keywords
- pipe
- guide shell
- titanium dioxide
- crystal
- crystallization device
- 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.)
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000002425 crystallisation Methods 0.000 title claims abstract description 40
- 230000008025 crystallization Effects 0.000 title claims abstract description 40
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 29
- 239000013078 crystal Substances 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000012452 mother liquor Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- 239000000498 cooling water Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a kind of titanium dioxide vacuum crystallization device, crystallizing tank includes guide shell, baffle plate, propeller, elutriating pipe, circulation pipe, guide shell includes upper cylindrical shape guide shell, lower conical guide shell, agitating paddle is provided with lower conical guide shell, agitating paddle includes main oar, metaplasm, metaplasm is arranged on the downside of main oar, elutriation bottom of the tube is provided with mother liquor outlet, crystal exports, circulation pipe top connection circulation fluid outlet bottom connection crystal solution inlet pipe, circulation pipe is provided with material inlet, and crystal solution inlet pipe is helical swirl pipe.Beneficial effects of the present invention：Easy to use, simple to operate, crystallization effect is good, and crystal size is uniform, stirs no dead angle, and grain size number is in the same size, and crystallization effect is good.
Description
Technical field
The present invention relates to a kind of chemical crystallization equipment technical field, specially a kind of titanium dioxide vacuum crystallization device.
Background technology
Titanium dioxide scientific name is titanium dioxide（ Titanium Dioxide）, it is a kind of dyestuff and pigment, and its molecular formula is
TiO2, molecular weight 79.8658.Titanium dioxide is very important raw material in industrial production, is widely used in coating, plastics, makes
The industry such as paper, printing-ink, chemical fibre, rubber, cosmetics, ceramics, enamel, electronics, food and medicine.And disappear in coating products
Consume titanium dioxide it is most be building coating, account for weight of coated paint 60%.Because real estate is larger to the demand of Coating Market, because
The burning hot demand for causing titanium dioxide of real-estate market increases.
The preparation method of titanium dioxide mainly has chloridising and sulfuric acid process, at present Dupont, Mei Lilian and Ke Meiji tri-
Company knows advanced titanium dioxide chloridising production technology, and sulfuric acid process is the main method that China produces titanium dioxide.Nothing
By using the crystallization of chloridising or sulfate process titanium dioxide as final steps.Vacuum crystallization is compared with common freezing and crystallizing
It is current with reducing cost of investment, increase disposal ability, reducing beneficial effect, the vacuum crystallizations such as operating cost, energy-conserving and environment-protective
The most frequently used crystallization mode.
The crystallization apparatus of titanium dioxide mainly uses DTB type crystallizers in the prior art, mainly including crystallizing tank, Inner guide
Cylinder, cylindrical baffle, elutriating cylinder（Eluriate leg）, steam generator, cooling water generator etc., operation principle is：Crystallizer bottom connects
There is an elutriating cylinder, be provided with guide shell and cylindrical baffle in crystallizer, hot saturation feed liquid is continuously fed into circulation pipe bottom during operation, with following
Cooler is pumped to after the mother liquor mixing of small crystals is entrained with endless tube, the solution after cooling flows into knot near guide shell bottom
Brilliant device, and the propeller by slowly rotating delivers to liquid level along guide shell, solution cools down in liquid surface evaporation, reaches hypersaturated state,
Which part solute deposits in the particle surface of suspension, crystal is grown up, a decanting zone is additionally provided with ring baffle periphery,
Bulky grain settles in decanting zone, and little particle then enters circulation pipe with mother liquor and sunk to by heat of solution, crystal in crystalliser feet
Elutriating cylinder, to make the granularity of crystalline product as far as possible uniform, the partial mother liquid that decanting zone is come is added to elutriation column bottom, utilizes waterpower
The effect of classification, makes little particle flow back to crystallizer with solution, and crystalline product is discharged from elutriation leg bottom.
The deficiencies in the prior art：1st, material inlet sets the unreasonable clarification for causing to be formed between guide shell and cylindrical baffle
The liquid stream helicity of the crystal solution in area is poor, and liquid to be crystallized is easily blocked at material inlet, and thicker knot is formed at material inlet
Crystal layer, cleaning is cumbersome, and cleans extremely inconvenience；2nd, the water conservancy diversion effect of guide shell is poor, influences follow-up crystallization effect；3rd, it is existing
Agitating paddle is propeller, and the stirring of propeller has dead angle, and the edge of guide shell leaves dead angle.
The content of the invention
To solve the above problems, the invention discloses a kind of titanium dioxide vacuum crystallization device.
In order to reach object above, the present invention provides following technical scheme：
A kind of titanium dioxide vacuum crystallization device, including crystallizing tank, the crystallizing tank include guide shell, baffle plate, propeller, elutriation
Pipe, circulation pipe, the guide shell are arranged on inside crystallizing tank, and the guide shell includes upper cylindrical shape guide shell, lower cone is led
Flow cartridge, the crystallization tank inner side are provided with cylindrical baffle, agitating paddle, the stirring are provided with the lower conical guide shell
Oar includes main oar, metaplasm, and the metaplasm is arranged on the downside of main oar, and the crystallization pot bottom is provided with elutriating pipe, the elutriating pipe bottom
Portion is provided with mother liquor outlet, crystal exports, and the crystallizing tank bottom side is provided with crystal solution inlet pipe, is provided with and follows in the middle part of the crystallizing tank
Ring liquid exports, and the circulation pipe top connection circulation fluid outlet bottom connection crystal solution inlet pipe, the circulation pipe is provided with material
Import, the crystal solution inlet pipe are helical swirl pipe.
Further, the main oar sets two, and ten metaplasms are set under each main oar.Main oar arranged in a crossed manner two
Root, stirring evenly.
Further, the metaplasm is banding, spiral helicine one of which.
Further, connection cooling water system, cooling water system preferably promote Crystallization at the top of the crystallizing tank.
Further, the circulation pipe connection circulating pump, the circulation pipe are provided with heater.Heating devices heat makes
Obtain the fine crystals in phegma to dissolve to form supersaturation easily, be back in crystallizing tank and recrystallize.
Further, the agitating paddle connection stirring motor.
Further, the crystal outlet connection crystal pump.
The course of work and principle of the present invention：After material to be crystallized enters at material inlet, enter from crystal solution inlet pipe
Crystallizing tank, under the stirring action of agitating paddle, crystallized in the crystal region that crystal solution is formed between guide shell and baffle plate, baffle plate with
Settling section is formed between crystallization tank body, without stirring action in this settling section so that crystal settles from mother liquor and falls into crystallizing tank
Bottom, finally fall into elutriating pipe, mother liquor flows out from the bottom of elutriating pipe, and crystal exports from crystal to flow out.
The invention has the advantages that：
（1）The present invention titanium dioxide vacuum crystallization device, crystal solution inlet pipe is helical swirl pipe so that entrance it is to be crystallized
Material enters in crystallizing tank in the shape of a spiral, forms spiral liquid flow, and the crystal region be advantageous between guide shell and baffle plate forms spiral shell
Circulation, crystallization rate and crystallization effect enhancing are revolved, meanwhile, liquid to be crystallized is not easy to form crystallizing layer at inlet, reduces cleaning
Number.
（2）The titanium dioxide vacuum crystallization device of the present invention, agitating paddle are arranged to carry the structure of metaplasm under main oar, on the one hand
The stirring without dead angle can be achieved, on the other hand make it that crystal size is in the same size, is not likely to produce a large amount of fine grains.Common crystallization tank is
The mixed effect reached, needs strong agitation, easily produces a large amount of fine grains, and when fine grain is less than 1 μm, fine grain has group
Poly- phenomenon, i.e. Van der Waals power can work, and cause Granularity Distribution wide, and viscosity becomes big, and intergranular wraps up residual after centrifugation
Liquid measure is relative to be increased, and causes product purity low；If stirring intensity not enough can cause mixing effect poor again, it is difficult to it is well mixed, because
Original propeller is modified to the structure that metaplasm is carried under main oar by this, the formed liquid stream whirlpool increase of stirring, is not strengthening
Realize bigger mixing effect in the case of mixing speed, the Lens capsule of formation is uniform, purity is high.
（3）The titanium dioxide vacuum crystallization device of the present invention, it is tubular bottom that original tubular guide shell is arranged into top
For the guide shell of taper, more preferable water conservancy diversion effect is realized.
（4）The present invention is easy to use, and simple to operate, crystallization effect is good, and crystal size is uniform.
Brief description of the drawings
Fig. 1, the embodiment of the present invention 1 structural representation；
Fig. 2, the embodiment of the present invention 1 crystal solution inlet pipe Section A-A schematic diagram；
Fig. 3, the embodiment of the present invention 1 agitating paddle structural representation；
Fig. 4, embodiments of the invention 2 structural representation.
Wherein：Crystallizing tank 100, cooling water system 200, heater 300, guide shell 1, cylindrical shape guide shell 11, lower circle
Conical flow guiding cylinder 12, baffle plate 2, propeller 3, main oar 31, metaplasm 32, stirring motor 33, elutriating pipe 4, mother liquor outlet 41, crystal go out
Mouth 42, circulation pipe 5, material inlet 51, crystal pump 6, crystal solution inlet pipe 7, circulation fluid outlet 8.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only
For illustrating the present invention rather than limitation the scope of the present invention.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of titanium dioxide vacuum crystallization device, including crystallizing tank 100, crystallizing tank include guide shell 1,
Baffle plate 2, propeller 3, elutriating pipe 4, circulation pipe 5, guide shell is arranged on inside crystallizing tank, and guide shell includes upper cylindrical shape guide shell
11st, lower conical guide shell 12, crystallization tank inner side are provided with cylindrical baffle, agitating paddle are provided with lower conical guide shell,
Agitating paddle connects stirring motor 33, and agitating paddle includes main oar 31, metaplasm 32, and metaplasm is arranged on the downside of main oar, and crystallization pot bottom is set
There is elutriating pipe, elutriation bottom of the tube is provided with mother liquor outlet 41, crystal outlet 42, and crystallizing tank bottom side is provided with crystal solution inlet pipe 7, knot
Circulation fluid outlet 8 is provided with the middle part of brilliant tank, circulation pipe top connection circulation fluid exports bottom connection crystal solution inlet pipe, set on circulation pipe
There is material inlet 51, crystal solution inlet pipe is helical swirl pipe..
Further, main oar sets two, and ten metaplasms are set under each main oar.Main two arranged in a crossed manner of oar, evenly
Stirring.
Further, metaplasm is banding, spiral helicine one of which.Banding metaplasm is arranged in the present embodiment, at it
Helical form metaplasm or other shapes metaplasm are may be configured as in his embodiment.
Embodiment 2
As shown in figure 4, a kind of titanium dioxide vacuum crystallization device 100, crystallizing tank top connection cooling water system 200, cooling water system
System preferably promotes Crystallization.Circulation pipe connects circulating pump, and circulation pipe is provided with heater 300.Heating devices heat makes
Obtain the fine crystals in phegma to dissolve to form supersaturation easily, be back in crystallizing tank and recrystallize.And export and connect in crystal
Connect crystal pump 6.Remaining structure is same as Example 1, will not be described here.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
- A kind of 1. titanium dioxide vacuum crystallization device, it is characterised in that：Including crystallizing tank, the crystallizing tank include guide shell, baffle plate, Propeller, elutriating pipe, circulation pipe, the guide shell are arranged on inside crystallizing tank, the guide shell include upper cylindrical shape guide shell, Lower conical guide shell, the crystallization tank inner side are provided with cylindrical baffle, stirring are provided with the lower conical guide shell Oar, the agitating paddle include main oar, metaplasm, and the metaplasm is arranged on the downside of main oar, and the crystallization pot bottom is provided with elutriating pipe, institute State elutriation bottom of the tube to export provided with mother liquor outlet, crystal, the crystallizing tank bottom side is provided with crystal solution inlet pipe, the crystallizing tank Middle part exports provided with circulation fluid, the circulation pipe top connection circulation fluid outlet bottom connection crystal solution inlet pipe, the circulation pipe Material inlet is provided with, the crystal solution inlet pipe is helical swirl pipe.
- A kind of 2. titanium dioxide vacuum crystallization device as claimed in claim 1, it is characterised in that：The main oar sets two, institute State ten metaplasms of setting under each main oar.
- A kind of 3. titanium dioxide vacuum crystallization device as claimed in claim 1 or 2, it is characterised in that：The metaplasm is banding, spiral shell Revolve the one of which of shape.
- A kind of 4. titanium dioxide vacuum crystallization device as claimed in claim 1, it is characterised in that：The circulation pipe connection circulation Pump, the circulation pipe are provided with heater.
- A kind of 5. titanium dioxide vacuum crystallization device as claimed in claim 1, it is characterised in that：Connection is cold at the top of the crystallizing tank But water system.
- A kind of 6. titanium dioxide vacuum crystallization device as claimed in claim 1, it is characterised in that：The agitating paddle connection stirring electricity Machine.
- A kind of 7. titanium dioxide vacuum crystallization device as claimed in claim 1, it is characterised in that：The crystal outlet connection crystal Pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635977.4A CN107349618A (en) | 2017-07-31 | 2017-07-31 | A kind of titanium dioxide vacuum crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635977.4A CN107349618A (en) | 2017-07-31 | 2017-07-31 | A kind of titanium dioxide vacuum crystallization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107349618A true CN107349618A (en) | 2017-11-17 |
Family
ID=60285981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710635977.4A Pending CN107349618A (en) | 2017-07-31 | 2017-07-31 | A kind of titanium dioxide vacuum crystallization device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107349618A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939599A (en) * | 2018-07-25 | 2018-12-07 | 天津大学 | A kind of self-loopa crystallizer and multistage continuous crystallisation process |
| CN110052191A (en) * | 2019-04-15 | 2019-07-26 | 无锡市英波化工有限公司 | Low VOC large arch dam anti-corrosion oil resistant coating process system, technique and its formula |
| CN110882552A (en) * | 2019-12-10 | 2020-03-17 | 王斌 | Air stripping type DTB evaporative crystallizer |
| CZ308276B6 (en) * | 2019-02-01 | 2020-04-08 | Kvs Ekodivize A.S. | Crystallization evaporator |
| CN115155098A (en) * | 2021-04-06 | 2022-10-11 | 中国科学院理化技术研究所 | Sodium sulfate cooling crystallization device |
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| CN104437325A (en) * | 2014-12-08 | 2015-03-25 | 重庆太岳科技有限公司 | Reaction kettle stirrer with comb tooth type stirring paddle |
| CN204365297U (en) * | 2014-12-08 | 2015-06-03 | 重庆太岳科技有限公司 | With the reactor agitator of comb |
| CN205323721U (en) * | 2015-12-03 | 2016-06-22 | 重庆太岳科技有限公司 | V -arrangement stirring rake reactor mixing device |
| CN205796600U (en) * | 2016-07-20 | 2016-12-14 | 陈华 | A kind of evaporation crystallization equipment with temperature sensor |
| CN207085390U (en) * | 2017-07-31 | 2018-03-13 | 南京圆点环境清洁技术有限公司 | A kind of titanium dioxide vacuum crystallization device |
-
2017
- 2017-07-31 CN CN201710635977.4A patent/CN107349618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437325A (en) * | 2014-12-08 | 2015-03-25 | 重庆太岳科技有限公司 | Reaction kettle stirrer with comb tooth type stirring paddle |
| CN204365297U (en) * | 2014-12-08 | 2015-06-03 | 重庆太岳科技有限公司 | With the reactor agitator of comb |
| CN205323721U (en) * | 2015-12-03 | 2016-06-22 | 重庆太岳科技有限公司 | V -arrangement stirring rake reactor mixing device |
| CN205796600U (en) * | 2016-07-20 | 2016-12-14 | 陈华 | A kind of evaporation crystallization equipment with temperature sensor |
| CN207085390U (en) * | 2017-07-31 | 2018-03-13 | 南京圆点环境清洁技术有限公司 | A kind of titanium dioxide vacuum crystallization device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939599A (en) * | 2018-07-25 | 2018-12-07 | 天津大学 | A kind of self-loopa crystallizer and multistage continuous crystallisation process |
| CZ308276B6 (en) * | 2019-02-01 | 2020-04-08 | Kvs Ekodivize A.S. | Crystallization evaporator |
| CN110052191A (en) * | 2019-04-15 | 2019-07-26 | 无锡市英波化工有限公司 | Low VOC large arch dam anti-corrosion oil resistant coating process system, technique and its formula |
| CN110052191B (en) * | 2019-04-15 | 2020-04-28 | 无锡市英波化工有限公司 | Low-VOC high-solid-content anticorrosive oil-resistant coating process system, process and formula |
| CN110882552A (en) * | 2019-12-10 | 2020-03-17 | 王斌 | Air stripping type DTB evaporative crystallizer |
| CN115155098A (en) * | 2021-04-06 | 2022-10-11 | 中国科学院理化技术研究所 | Sodium sulfate cooling crystallization device |
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Application publication date: 20171117 |
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