CN104801059A - Melt crystallizer - Google Patents
Melt crystallizer Download PDFInfo
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- CN104801059A CN104801059A CN201510150154.3A CN201510150154A CN104801059A CN 104801059 A CN104801059 A CN 104801059A CN 201510150154 A CN201510150154 A CN 201510150154A CN 104801059 A CN104801059 A CN 104801059A
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Abstract
The invention relates to a melt crystallizer which comprises a casing, crystallizing tubes, and distributing parts arranged at the inlets of the crystallizing tubes, wherein an upper seal cover is arranged at the top end of the casing; a lower seal cover is arranged at the bottom end of the casing; a sealed space is formed in the casing through the upper seal cover and the lower seal cover; mounting holes are formed in the upper seal cover; the crystallizing tubes are arranged at the mounting holes, and are communicated with the mounting holes; the crystallizing tubes extend vertically, and penetrate through the lower seal cover; each distributing part comprises a tapered body capable of being inserted into the corresponding crystallizing tube; the diameter of the tapered body increases in the up-down direction gradually, and a gap is formed between the tapered body and the corresponding crystallizing tube. According to the melt crystallizer, the reaction is easy to control, and the purification efficiency is high.
Description
Technical field
The present invention relates to a kind of melting crystallizer.
Background technology
Along with the development of chemical industry, the purity requirement for polymer monomer and raw material is more and more higher.And these monomers exist with the form of admixture of isomeric compound usually, therefore refining purification, with the requirement making its chemical purity and optical purity reach polymer monomer must be carried out to these mixtures.
And for isomer and heat-sensitive substance, such as, lactide, at high temperature easily coking and hydrolysis.According to distillation technology, operating condition is harsh, to equipment material and requirement on machining accuracy also higher.Nonetheless, the charing in rectifying still, the phenomenon such as coking and polymerization cannot be avoided, and product yield is very low.
Fusion-crystallization technology is applicable to heat of dissociation sensitivity system and isomerism system.But fusion-crystallization apparatus structure of the prior art is complicated, and purification efficiency is low.
Summary of the invention
For above-mentioned technical problem existing in prior art, the present invention proposes a kind of melting crystallizer.It can utilize fusion-crystallization technology, purifies to polymer monomer and raw material, is particularly useful for thermosensitive polymer monomer and raw material.Further, it is simple that this melting crystallizer has structure, is easy to the advantage that industry is amplified.
According to the present invention proposes a kind of melting crystallizer, it comprises shell, arranges upper cover on the top of shell, and arranges lower capping in the bottom of shell, and shell forms enclosure space by upper cover and lower capping, and upper cover is provided with installing hole,
Be arranged on installing hole place and the crystallizer be communicated with installing hole, crystallizer vertically extends and passes lower capping, and
The distribution member that the entrance being arranged on crystallizer also can be connected with upper cover, distribution member comprises the conical body that can be inserted in crystallizer, and conical body is configured to diameter on direction from top to bottom and increases gradually, forms gap between conical body and crystallizer.
In one embodiment, distribution member also comprises the cover piece being fixedly connected with conical body and also can being fastened on upper cover, cover piece is provided with the groove that can be communicated with gap.Preferably, groove is configured to cross.
In one embodiment, the lower surface diameter of conical body and the internal diameter of crystallizer are than being 0.75:1-0.95:1.
In one embodiment, arrange capsule on the top of shell to form distributor chamber with upper cover, upper capsule top is provided with the charging aperture be communicated with distributor chamber, and on upper capsule, be provided with the first temperature-control units of the temperature for controlling distributor chamber,
And/or in the bottom of shell, lower capsule being set to form discharge chamber with lower capping, the bottom of discharge chamber is provided with the discharging opening be communicated with discharge chamber, and on lower capsule, be provided with the second temperature-control units of the temperature for controlling discharge chamber.
In one embodiment, upper capsule is configured to the semicircle arcuation with the first interlayer, charging aperture is arranged on the arc top place of capsule, and the first temperature-control units comprise pass through for thermal medium the first entrance be communicated with the first interlayer, the first interlayer and first exporting of being communicated with the first interlayer
And/or lower capsule is configured to the semicircle arcuation with the second interlayer, discharging opening is arranged on the arc top place of lower capsule, and the second temperature-control units comprise pass through for thermal medium the second entrance be communicated with the second interlayer, the second interlayer and second exporting of being communicated with the second interlayer.
In one embodiment, the first entrance is arranged on the lower part of capsule, and first exports the upper part the opposite side being positioned at the first entrance that are arranged on capsule,
And/or second entrance be arranged on the lower part of lower capsule, the second outlet is arranged on the upper part of lower capsule and is positioned at the opposite side of the second entrance.
In one embodiment, detachablely in distributor chamber arrange buffer board, buffer board extends in radial direction and is connected with the inwall of distributor chamber, and buffer board is provided with through hole,
And/or detachable in discharge chamber cylinder manifold is set, cylinder manifold extends in radial direction and is connected with the inwall of discharge chamber.
In one embodiment, the heat-conducting medium entrance that setting is communicated with enclosure space on shell and heat-conducting medium export, heat-conducting medium entrance is arranged on the top of shell, heat-conducting medium outlet is arranged on the bottom of shell, and the enclosure space between heat-conducting medium entrance and heat-conducting medium outlet forms heat-exchanging chamber.
In one embodiment, the distance of heat-conducting medium entrance distance upper cover is the 1/6-1/3 of the height of shell.
In one embodiment, heat-conducting medium entrance is evenly arranged in the circumference of shell,
And/or heat-conducting medium outlet is evenly arranged in the circumference of shell.
In one embodiment, in heat-exchanging chamber, guiding subassembly is set, guiding subassembly comprises the first conducting element and second conducting element of compartment setting, first conducting element radial direction extends the contact internal walls with heat-exchanging chamber, arrange pod apertures in the center of the first conducting element, the second conducting element radial direction arranges and the inwall of itself and heat-exchanging chamber has water conservancy diversion gap.
In one embodiment, arrange in the enclosure space on heat-conducting medium entrance dividing plate with upper cover between form moist closet, the sidewall of moist closet is provided with insulation entrance for being communicated with thermal medium and insulation outlet.
In the application, orientation term " on ", D score all with the operating configurations of melting crystallizer for reference.
Compared with prior art, the invention has the advantages that, this melting crystallizer meets the purifying technique needs of the polymer monomer of the pure high chemistry of high light.The structure of this melting crystallizer is simple simultaneously, and reaction is easy to control, and the product purity of being purified by it is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.In the drawings:
Fig. 1 shows the structure chart according to melting crystallizer of the present invention.
Fig. 2 shows the profile at the B place from Fig. 1.
Fig. 3 shows the top view at the B place from Fig. 1.
Fig. 4 shows the sectional view at the A-A place from Fig. 1.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 shows according to melting crystallizer 100 of the present invention.As shown in Figure 1, melting crystallizer 100 comprises shell 1, and arranges upper cover 2 on the top of shell 1, arranges lower capping 3 in the bottom of shell 1, and shell 1 forms enclosure space 4 by upper cover 2 and lower capping 3.Also detachablely on the top of shell 1 be provided with capsule 5, between upper capsule 5 and upper cover 2, form distributor chamber 6.Detachablely in the bottom of shell 1 be provided with lower capsule 7, between lower capsule 7 and lower capping 3, form discharge chamber 8.Upper cover 2 is provided with installing hole 21 (shown in Figure 2).The crystallizer 9 be communicated with installing hole 21 is provided with at installing hole 21 place.Crystallizer 9 is vertically arranged, extends in discharge chamber 8 through lower capping 3.Charging aperture 51 is provided with to be communicated with distributor chamber 6 on the top of upper capsule 5.Meanwhile, in the bottom of lower capsule 7, discharging opening 71 is set to be communicated with discharge chamber 8.
Thus, material mother liquor enters in distributor chamber 6 by charging aperture 51, crystallizer 9 is entered again by installing hole 21, a certain material in crystallizer 9 in material mother liquor can crystallization on wall within it, and uncrystallized material mother liquor is discharged in discharge chamber 8 by the lower end of crystallizer 9, and discharge melting crystallizer 100 eventually through discharging opening 71.The structure of this melting crystallizer 100 is simple, applied widely, and can realize technical scale.
Preferably, crystallizer 9 is film-falling crystallization pipe.Thus material mother liquor is when flowing along the inwall of crystallizer 9, adds crystallization area, prevents and carry secretly simultaneously.In addition, in order to ensure the inwall overflow film forming of material mother liquor at crystallizer 9, distribution member 10 is set in the porch of crystallizer 9.In one preferably embodiment, as shown in Figure 2, distribution member 10 comprises conical body 11 and cover piece 12.Wherein, conical body 11 can be inserted in crystallizer 9, and forms with the inwall of crystallizer 9 gap 16 being used for directing material mother liquor.And cover piece 12 is fixedly connected with conical body 11, and cover-type is overlapped on the porch of crystallizer 9.Arrange groove 13 on the top of cover piece 12, groove 13 is communicated with gap 16, to make the material mother liquor in distributor chamber 6 by entering in gap 16 after groove 13, with the inwall overflow film forming at crystallizer 9, as shown in Figure 3.In a further preferred embodiment, groove 13 is for being arranged on " ten " word groove on cover piece 12.Further, the lower surface diameter of conical body 11 and the internal diameter of crystallizer 9 are than being 0.75:1-0.95:1.By arranging distribution member 10 in the porch of crystallizer 9, make material mother liquor not by the impact of the liquid level of the material mother liquor in distributor chamber 6, and flow along the inwall of crystallizer 9 equably, contribute to overflow film forming, material mother liquor is fully contacted with the inwall of crystallizer 9, ensure that the product purity of crystallization effect and purification.Reduced the flow velocity of material mother liquor simultaneously by distribution member 10, serve cushioning effect, thus prevent from carrying secretly, ensure that crystalline rate.
According to the present invention, upper capsule 5 is provided with the first temperature-control units 17 of the temperature for controlling distributor chamber 6.Such as, upper capsule 5 is configured with the first interlayer 52.First temperature-control units 17 comprises the first entrance 53, first interlayer 52 be communicated with the first interlayer 52 passed through for thermal medium and be communicated with the first interlayer 52 first exports 54.Thus, thermal medium flowing in the first entrance 53, first interlayer 52 and the first outlet 54 can be adopted, with to distributor chamber 6 heating and thermal insulation, to prevent material mother liquor premature crystallization in distributor chamber 6.In addition, for ensureing the uniform throughout of the temperature within distributor chamber 6, and thermal medium unimpeded flowing in the first interlayer 52, upper capsule 5 is configured to semicircle arcuation, to make the interior walls be smooth of the first interlayer 52.Preferably, the first entrance 53 is arranged on the lower part of capsule 5, and the first outlet 54 is arranged on the upper part of capsule 5 and is positioned at the opposite side of the first entrance 53.This setup contributes to improving energy utilization rate, reduces energy consumption.It should be noted that, upper capsule 5 is not limited to semicircle shape structure, can also be other version.Such as, coniform, or upper for coniform lower to cylindric etc.It should be noted that, in order to ensure that distributor chamber 6 is heated evenly further, in the first interlayer 52, being also provided with conducting element 55, with the thermal medium in water conservancy diversion first interlayer 52.
In like manner, lower capsule 7 is provided with the second temperature-control units 18 of the temperature for controlling discharge chamber 8.Such as, lower capsule 7 is configured with the second interlayer 72.Second temperature-control units 18 comprises the second entrance 73, second interlayer 72 be communicated with the second interlayer 72 passed through for thermal medium and be communicated with the second interlayer 72 second exports 74.Thus, thermal medium can be adopted to flow in the second entrance 73, second interlayer 72 and the second outlet 74, with to discharge chamber 8 heating and thermal insulation, thus prevent the problem that crystallizer 9 blocks in the exit crystallization of crystallizer 9 by material mother liquor.In addition, for ensureing the uniform throughout of the temperature within discharge chamber 8, and thermal medium unimpeded flowing in the second interlayer 72, lower capsule 7 is configured to semicircle arcuation, to make the interior walls be smooth of the second interlayer 72.Preferably, the second entrance 73 is arranged on the lower part of lower capsule 7, and the second outlet 74 is arranged on the upper part of lower capsule 7 and is positioned at the opposite side of the second entrance 73.This setup contributes to improving energy utilization rate, reduces energy consumption.It should be noted that, lower capsule 7 is not limited to semicircle shape structure, can also be other version.Such as, coniform, or upper for coniform lower to cylindric etc.
Upper capsule 5 is provided with the first installing port 56, for laying temperature sensor with the temperature in perception distributor chamber 6, thus detects the temperature or temperature required to obtain according to its temperature results guidance operation of measuring of distributor chamber 6.In like manner, lower capsule 7 is provided with the second installing port 75, for laying temperature sensor with the temperature in perception discharge chamber 8.
According to the present invention, buffer board 19 is set in distributor chamber 6.On the detachable inwall being arranged on capsule 5 of buffer board 19.Buffer board 19 arranges through hole 20, to make the material mother liquor entering into distributor chamber 6 from charging aperture 51 flow on buffer board 19, and flows downward from through hole 20.The impact of material mother liquor to material mother liquor liquid level is decreased by arranging buffer board 19.Meanwhile, due to the detachable setting of buffer board 19, facilitate cleaning and the replacing of buffer board 19.Meanwhile, detachable in discharge chamber 8 cylinder manifold 22 is set.The material mother liquor that cylinder manifold 22 is flowed out by crystallizer 9 for confluxing, cylinder manifold 22 is connected with the inwall of discharge chamber 8, to make material mother liquor from the gap be made up of cylinder manifold 22 and the inwall of discharge chamber 8 or to flow to discharging opening 71 from the through hole be arranged on cylinder manifold 22.
The heat-conducting medium entrance 24 that setting is communicated with enclosure space 4 on shell 1 and heat-conducting medium export 25.Wherein, heat-conducting medium entrance 24 is arranged on the top of shell 1, and heat-conducting medium outlet 25 is arranged on the bottom of shell 1 near lower capping 3 place, and the enclosure space 4 between heat-conducting medium entrance 24 and heat-conducting medium outlet 25 forms heat-exchanging chamber 26.Material mother liquor enter in crystallizer 9 need crystallization time, the thermal medium of low temperature enters in heat-exchanging chamber 26 by heat-conducting medium entrance 24, and flow out from heat-conducting medium outlet 25, to make the temperature in heat-exchanging chamber 26 drop to setting value, a certain material in material mother liquor is made to start crystallization on the inwall of crystallizer 9.Now, uncrystallized material mother liquor is discharged from the lower end of crystallizer 9.Crystal layer on the inwall of crystallizer 9 reaches certain thickness, and charging aperture 51 stops charging.And the thermal medium of high temperature enters in heat-exchanging chamber 26 by heat-conducting medium entrance 24, and flow out from heat-conducting medium outlet 25, melt to make the crystal layer in crystallizer 9.Melt after fusing is disposed in collection container through discharge chamber 8.
In order to ensure thermal medium Uniform Flow in heat-exchanging chamber 26, heat-conducting medium entrance 24 and heat-conducting medium outlet 25 can be multiple, and are evenly arranged in the circumference at shell 1.The flowing that this mode entering to have more makes thermal medium in heat-exchanging chamber 26 more evenly, little with the heat exchange difference of crystallizer 9, contribute to controlling the reaction environment in heat-exchanging chamber 26 simultaneously.
Guiding subassembly 31 is set in heat-exchanging chamber 26.Guiding subassembly 31 comprises the first conducting element 32 and the second conducting element 33 that compartment is arranged.Wherein, the first conducting element 32 radial direction extends the contact internal walls with heat-exchanging chamber 26, and arranges pod apertures 34 in the center of the first conducting element 32.Second conducting element 33 radial direction is arranged, and the inwall of itself and heat-exchanging chamber 26 has water conservancy diversion gap 35.Crystallizer 9 is sealed passes the first conducting element 32 and the second conducting element 33.Thus, thermal medium is flow on the first conducting element 32 by heat-conducting medium entrance 24, and flows to the second conducting element 33 from pod apertures 34, flows downward afterwards from gap 35 again.Preferably, as required, many group guiding subassemblies 31 can be set in heat-exchanging chamber 26, to make thermal medium constantly flow to middle part from periphery, then flow to periphery from middle part, thus improve the heat exchanger effectiveness in heat-exchanging chamber 26.This set, while raising rate of heat exchange, reduces energy consumption, contributes to technical scale.
According to a preferred embodiment of the present invention, heat-conducting medium entrance 24 is the 1/6-1/3 of the height of shell 1 apart from the distance of upper cover 2.And in enclosure space 4 above heat-conducting medium entrance 2, dividing plate 27 is set, to form moist closet 28 between dividing plate 27 and upper cover 2.Wherein, distribution member 10 is positioned at the upper end of dividing plate 27, and crystallizer 9 is sealed through dividing plate 27.The sidewall of moist closet 28 arranges the insulation entrance 29 for being communicated with thermal medium, and thermal medium to be introduced the temperature maintaining moist closet 28 in moist closet 28, thermal medium flows out by being incubated outlet 30 afterwards.Can prevent material mother liquor from just starting crystallization at distribution member 10 place by this set and block crystallizer 9.
Preferably, multiple crystallizer 9 can be established in enclosure space 4.Little for ensureing the heat exchange difference between crystallizer 9, multiple crystallizers 9 spatially capping 2 is evenly arranged, as shown in Figure 4.Thus, the crystalline rate of melting crystallizer 100 can be improved, be conducive to realizing technical scale.
Describe the use procedure of melting crystallizer 100 below in detail to 4 according to Fig. 1.
Material mother liquor enters distributor chamber 6 by charging aperture 51 by buffer board 19.In order to avoid the material in material mother liquor shifts to an earlier date crystallization, the temperature making distributor chamber 6 keep certain by the first temperature-control units 17, namely can make thermal medium successively by the first entrance 53, first interlayer 52 and the first outlet 54.Material mother liquor trickles downwards along the inwall of crystallizer 9 equably via distribution member 10.Meanwhile, the thermal medium of low temperature enters in heat-exchanging chamber 26 by heat-conducting medium entrance 24, and thermal medium exports 25 by heat-conducting medium and derives after guiding subassembly 31.Material mother liquor in crystallizer 9 is under the effect of the thermal medium of low temperature, and temperature drops to a certain setting value, and a certain material in material mother liquor is just in the inwall crystallization of crystallisation chamber 9.And uncrystallized material mother liquor is discharged from the lower end of crystallizer 9, and conflux via the cylinder manifold 22 in discharge chamber 4, finally discharge melting crystallizer 100 from discharging opening 71.Wherein, the arrow in Fig. 1 illustrates the flow direction of material mother liquor and thermal medium.
The material mother liquor of discharging melting crystallizer 100 can be admitted to charging aperture 51 to carry out crystallization again, again until the basic crystallization of this material in material mother liquor is complete.
On the inwall of crystallizer 9, when crystal layer reaches certain thickness, charging aperture 51 just stops into material mother liquor.Meanwhile, the thermal medium entering the low temperature of heat-exchanging chamber 26 switches to the thermal medium of high temperature, with by the crystal layer fusing on crystallizer 9 inwall, is disposed to collection container after crystal layer fusing through discharge chamber 8.
After crystal layer fusing on the inwall of pipe 9 to be crystallized, charging aperture 51 reopens to make material mother liquor enter distributor chamber 6.The thermal medium entering the high temperature of heat-exchanging chamber 26 switches to again the thermal medium of low temperature, starts new round crystallization process.Crystallization → fusing → recrystallization like this → melt again, constantly circulates, and reaches the object extracting desired substance.
The foregoing is only the preferred embodiment of the present invention; but scope is not limited thereto; any those skilled in the art, in technical scope disclosed by the invention, can easily carry out changing or changing, and this change or change all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (13)
1. a melting crystallizer, comprising:
Shell, arranges upper cover on the top of described shell, and arranges lower capping in the bottom of described shell, and described shell forms enclosure space by described upper cover and described lower capping, and described upper cover is provided with installing hole,
Be arranged on described installing hole place and the crystallizer be communicated with described installing hole, described crystallizer vertically extends and passes described lower capping, and
The distribution member that the entrance being arranged on described crystallizer also can be connected with described upper cover, described distribution member comprises the conical body that can be inserted in described crystallizer, described conical body is configured to diameter on direction from top to bottom and increases gradually, forms gap between described conical body and described crystallizer.
2. melting crystallizer according to claim 1, is characterized in that, described distribution member also comprises the cover piece being fixedly connected with described conical body and also can being fastened on described upper cover, described cover piece is provided with the groove that can be communicated with described gap.
3. melting crystallizer according to claim 2, is characterized in that, described groove is configured to cross.
4. melting crystallizer according to claim 1 and 2, is characterized in that, the lower surface diameter of described conical body and the internal diameter of described crystallizer are than being 0.75:1-0.95:1.
5. melting crystallizer according to claim 1, it is characterized in that, capsule is set on the top of described shell to form distributor chamber with described upper cover, described upper capsule top is provided with the charging aperture be communicated with described distributor chamber, and capsule is provided with on described first temperature-control units of the temperature for controlling described distributor chamber
And/or in the bottom of described shell, lower capsule is set to form discharge chamber with described lower capping, the bottom of described discharge chamber is provided with the discharging opening be communicated with described discharge chamber, and on described lower capsule, be provided with the second temperature-control units of the temperature for controlling described discharge chamber.
6. melting crystallizer according to claim 5, it is characterized in that, described upper capsule is configured to the semicircle arcuation with the first interlayer, described charging aperture is arranged on the arc top place of described upper capsule, and described first temperature-control units comprise pass through for thermal medium the first entrance be communicated with described first interlayer, the first interlayer and first exporting of being communicated with described first interlayer
And/or described lower capsule is configured to the semicircle arcuation with the second interlayer, described discharging opening is arranged on the arc top place of described lower capsule, and described second temperature-control units comprise pass through for thermal medium the second entrance be communicated with described second interlayer, the second interlayer and second exporting of being communicated with described second interlayer.
7. melting crystallizer according to claim 6, is characterized in that, described first entrance is arranged on the lower part of described upper capsule, and described first exports the upper part the opposite side being positioned at described first entrance that are arranged on described upper capsule,
And/or described second entrance is arranged on the lower part of described lower capsule, described second exports the upper part the opposite side being positioned at described second entrance that are arranged on described lower capsule.
8. melting crystallizer according to claim 6, is characterized in that, detachablely in described distributor chamber arranges buffer board, and described buffer board extends in radial direction and is connected with the inwall of described distributor chamber, and described buffer board is provided with through hole,
And/or detachable in described discharge chamber cylinder manifold is set, described cylinder manifold extends in radial direction and is connected with the inwall of described discharge chamber.
9. melting crystallizer according to claim 1, it is characterized in that, the heat-conducting medium entrance that is communicated with described enclosure space is set on the housing and heat-conducting medium exports, described heat-conducting medium entrance is arranged on the top of described shell, described heat-conducting medium outlet is arranged on the bottom of described shell, and the enclosure space between described heat-conducting medium entrance and heat-conducting medium outlet forms heat-exchanging chamber.
10. melting crystallizer according to claim 9, is characterized in that, the distance of described heat-conducting medium entrance distance upper cover is the 1/6-1/3 of the height of described shell.
11. melting crystallizers according to claim 9, is characterized in that, described heat-conducting medium entrance is evenly arranged in the circumference of described shell,
And/or described heat-conducting medium outlet is evenly arranged in the circumference of described shell.
12. melting crystallizers according to claim 9, it is characterized in that, in described heat-exchanging chamber, guiding subassembly is set, described guiding subassembly comprises the first conducting element and second conducting element of compartment setting, described first conducting element radial direction extends the contact internal walls with described heat-exchanging chamber, arrange pod apertures in the center of described first conducting element, described second conducting element radial direction arranges and the inwall of itself and described heat-exchanging chamber has water conservancy diversion gap.
13. melting crystallizers according to claim 9, it is characterized in that, arrange in described enclosure space on described heat-conducting medium entrance dividing plate with described upper cover between form moist closet, the sidewall of described moist closet is provided with insulation entrance for being communicated with thermal medium and insulation outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011112843.2A CN112569629A (en) | 2015-03-31 | 2015-03-31 | Melt crystallizer |
| CN201510150154.3A CN104801059A (en) | 2015-03-31 | 2015-03-31 | Melt crystallizer |
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| CN201510150154.3A CN104801059A (en) | 2015-03-31 | 2015-03-31 | Melt crystallizer |
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| CN202011112843.2A Division CN112569629A (en) | 2015-03-31 | 2015-03-31 | Melt crystallizer |
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| CN202011112843.2A Pending CN112569629A (en) | 2015-03-31 | 2015-03-31 | Melt crystallizer |
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| CN105771306A (en) * | 2016-05-13 | 2016-07-20 | 湖北东方化工有限公司 | Static melt crystallizer for purifying and separating material |
| CN106178582A (en) * | 2016-08-31 | 2016-12-07 | 烟台国邦化工机械科技有限公司 | A kind of fusion-crystallization method |
| CN106621444A (en) * | 2016-11-25 | 2017-05-10 | 江苏德邦工程有限公司 | Novel double-falling-film melting crystallizer and process for performing substance separation |
| CN107456776A (en) * | 2017-08-03 | 2017-12-12 | 山东飞扬化工有限公司 | A kind of device and method for purifying dimethyl carbonate |
| CN108939598A (en) * | 2018-07-14 | 2018-12-07 | 河北诺达化工设备有限公司 | Melting crystallizer |
| CN109550909A (en) * | 2018-11-29 | 2019-04-02 | 何爱建 | The auxiliary heat conduction device of Ferrous Metallurgy continuous cast mold |
| CN117959753A (en) * | 2024-04-02 | 2024-05-03 | 河北惠尔信新材料股份有限公司 | Crystallization device for manufacturing high-grade ferrous sulfate heptahydrate |
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