CN217312036U - Falling film crystallization tube and falling film crystallizer - Google Patents
Falling film crystallization tube and falling film crystallizer Download PDFInfo
- Publication number
- CN217312036U CN217312036U CN202220243437.8U CN202220243437U CN217312036U CN 217312036 U CN217312036 U CN 217312036U CN 202220243437 U CN202220243437 U CN 202220243437U CN 217312036 U CN217312036 U CN 217312036U
- Authority
- CN
- China
- Prior art keywords
- falling film
- wall
- crystallization
- tube
- film crystallization
- 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.)
- Active
Links
Images
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model belongs to the technical field of the crystallization equipment, concretely relates to falling film crystallization pipe and falling film crystallizer. When the inner wall crystallization is adopted, a plurality of diversion bosses for shunting materials are arranged on the inner wall of the falling film crystallization tube; when the outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is provided with a plurality of diversion bosses for shunting materials, and when the falling film crystallization tube is used, the upper part of the longitudinal section of each diversion boss is in a shape with a narrow upper part and a wide lower part. In the utility model, the diversion boss plays a role in shunting the material, so that the material is more uniformly heat-exchanged and cooled, and the crystallization uniformity of the material is improved; a bayonet similar to a V shape is formed between the left and right adjacent flow guide bosses, the bayonet can effectively support and clamp crystals, and the crystals are prevented from falling off.
Description
Technical Field
The utility model belongs to the technical field of the crystallization equipment, especially, relate to a falling film crystallization pipe and falling film crystallizer.
Background
Falling film crystallization refers to the process in which the molten mixture descends in the form of a thin film on the walls of a vertical crystallizer and crystallizes out on the walls. Falling film crystallization is a novel separation and purification technology and is widely applied to the fields of separation and purification of homologues, isomers and heat-sensitive substances with similar boiling points and the like. The falling film crystallization separation process mainly comprises three steps of falling film crystallization and partial melting (commonly called sweating and melting). In the crystallization process, some solutions with high impurity content and low melting point are inevitably crystallized out between the crystallization layers, so that the purity of the crystals is reduced. The crystal layer is slowly heated, partial melting and sweating are carried out after the crystal layer is heated, and substances in the melting sweat are redistributed and enriched. Sweat containing more impurities is gradually discharged out of the crystal layer in the heat transfer and mass transfer processes, so that the purity of the crystal layer is improved.
The falling film crystallization tube is an important component used in the falling film crystallization process. However, when the existing falling film crystallization tube is used, materials or cold and hot media flow in a film form, and tend to be radially gathered under the action of gravity, so that the materials or the cold and hot media are unevenly distributed, the heat exchange efficiency is reduced, the phenomenon of uneven crystallization thickness is presented, the heat transfer efficiency is further influenced, the time of the crystallization and/or melting process is increased, and the reduction of energy consumption is not facilitated; secondly, the existing crystallization tube generally adopts an in-tube crystallization mode, the crystallization space is limited, the improvement of the production efficiency is not facilitated, and the blockage phenomenon and radial aggregation caused by uneven thickness of a crystal layer are not conducive to continuous industrial production; moreover, the weight of the material is increased after the thickness of the crystal layer is increased, and an impact force from top to bottom exists, the impact force is easy to cause the crystal to fall off from the tube wall and be re-melted into the material, so that the crystallization time and energy loss are increased, the blockage phenomenon can be caused even when the crystal with larger volume falls off, the crystal can wrap impurities, the purity of the product is reduced, and the blocked falling film crystallization tube cannot discharge sweat in time in the sweating operation process, so that the purity of the product is further reduced; in addition, in the sweating process, the heating medium raises the crystallization temperature to be slightly lower than the melting point of the product to generate sweating, crystals are easy to fall off when the sweating appears on the tube wall to block the crystallization tube, on one hand, the sweating is not easy to discharge, the purity of the product is influenced, on the other hand, after the crystals fall into the sweating, the crystals are partially melted and then discharged, and the yield of the product is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims at providing a falling film crystallization pipe and falling film crystallizer for solve and adopt current falling film crystallization pipe separation and purification, heat exchange efficiency is low, the energy consumption is high, crystallization thickness is uneven, be unfavorable for continuous industrial production, block up the pipeline, the purity is low, the yield hangs down the scheduling problem.
In order to achieve the above and other related objects, in a first aspect, the present invention provides a falling film crystallization tube, wherein when inner wall crystallization is adopted, the inner wall of the falling film crystallization tube is provided with a plurality of diversion bosses for shunting material; when the outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is provided with a plurality of diversion bosses for shunting materials, and when the falling film crystallization tube is used, the upper part of the longitudinal section of each diversion boss is in a shape with a narrow upper part and a wide lower part.
Optionally, all the diversion bosses are uniformly distributed on the inner wall or the outer wall of the falling film crystallization tube.
Optionally, two guide bosses adjacent in the vertical direction are arranged in a staggered manner.
Optionally, when inner wall crystallization is adopted, the inner wall of the falling film crystallization tube is also provided with anti-skid lines; when the outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is also provided with anti-skid lines.
Optionally, the anti-skid lines protrude outwards or are sunken inwards by 0.1-1mm, preferably 0.1-0.5mm along the inner wall or the outer wall of the falling film crystallization tube.
Optionally, when inner wall crystallization is adopted, the outer wall of the falling film crystallization tube is provided with a plurality of cooling and heating medium distribution bosses; when the outer wall is adopted for crystallization, a plurality of cold and heat medium distribution bosses are arranged on the inner wall of the falling film crystallization tube.
Optionally, the axial height of the cold and heat medium distribution boss is 0.5-3mm, preferably 0.5-1 mm.
Optionally, the axial heights of the flow guide bosses are all 0.5-3 mm.
Optionally, when the falling film crystallization tube is used (vertically placed), the upper part of the longitudinal section of the cold and heat medium distribution boss is in a shape with a narrow top and a wide bottom, such as a triangle or an arc.
Optionally, the falling film crystallization tube is cylindrical, square column-shaped or hollow polygonal.
In another aspect, the present invention further provides a falling film crystallizer, which includes the falling film crystallization tube as described above.
As mentioned above, the falling film crystallization tube and the falling film crystallizer of the present invention have the following beneficial effects:
(1) the diversion boss plays a role in shunting the material, so that the heat exchange and cooling of the material are more uniform, and the crystallization uniformity of the material is improved; a bayonet similar to a V shape is formed between the left and right adjacent flow guide bosses, the bayonet can effectively support and clamp crystals, and the crystals are prevented from falling off.
(2) The anti-skid lines are beneficial to crystallization to generate a concave-convex structure, the grabbing arm force between the crystallization and the tube wall of the falling film crystallization tube is improved, and the crystallization is prevented from falling off from the tube wall of the falling film crystallization tube.
Drawings
Figure 1 is a schematic diagram of the outer wall of a falling film crystallization tube of example 1;
figure 2 is a schematic structural view of the inner wall of a falling film crystallization tube of example 1;
figure 3 is a schematic of the shape of the falling film crystallization tube of example 1;
figure 4 is a schematic diagram of the outer wall of a falling film crystallization tube of example 2;
FIG. 5 is a schematic view of the structure of the inner wall of a falling film crystallization tube of example 3;
figure 6 is a schematic diagram of the structure of the inner wall of a falling film crystallization tube of example 4;
figure 7 is a schematic diagram of the structure of the inner wall of a falling film crystallization tube of example 5;
figure 8 is a schematic diagram of the outer wall of a falling film crystallization tube of example 6;
fig. 9 is a schematic view of the shape of the guide projection of example 7.
Reference numerals
1 is the outer wall, 2 is the inner wall, 3 is the water conservancy diversion boss, 4 is anti-skidding line, and 5 is cold and hot medium distribution boss.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be noted that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes, without affecting the functions and the achievable purposes of the present invention, should still fall within the scope that the technical contents disclosed in the present invention can cover. Meanwhile, the terms such as "inside", "outside", "upper", "lower", "left" and "right" used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial technical changes.
The utility model provides a falling film crystallization tube, which is cylindrical, square column, hollow triangular prism or hollow polygonal, when inner wall crystallization is adopted, the inner wall of the falling film crystallization tube is uniformly provided with a plurality of diversion bosses which are used for shunting materials and have the axial height of 0.5-3 mm; when outer wall crystallization is adopted, a plurality of flow guide bosses which are used for shunting materials and have the axial height of 0.5-3mm are uniformly arranged on the outer wall of the falling film crystallization tube.
In another embodiment of the utility model, when the inner wall crystallization is adopted, the inner wall of the falling film crystallization tube is also provided with anti-skid lines which protrude outwards or sink inwards by 0.1-1mm along the inner wall of the falling film crystallization tube; when outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is also provided with anti-skid grains which protrude outwards or sink inwards by 0.1-1mm along the outer wall of the falling film crystallization tube.
In another embodiment of the utility model, when the inner wall crystallization is adopted, the outer wall of the film crystallization tube is uniformly provided with a plurality of cold and heat medium distribution bosses with the axial height of 0.5-3 mm; when the outer wall is adopted for crystallization, a plurality of cold and heat medium distribution bosses with the axial height of 0.5-3mm are uniformly arranged on the inner wall of the falling film crystallization tube.
To be able to describe the present invention in detail, the following description will be made of the falling film crystallization tube of the present invention:
example 1
Referring to fig. 1 and 2, fig. 1 and 2 show an outer wall 1 and an inner wall 2 of a falling film crystallization tube (vertically placed) according to the present embodiment, respectively.
This example provides a falling film crystallization tube which may be cylindrical, square columnar, hollow triangular prism, or hollow polygonal (as shown in fig. 3).
The outer wall 1 of the falling film crystallization tube is uniformly provided with a plurality of flow guide bosses 3 with the axial height of 0.5-3mm, two adjacent flow guide bosses 3 in the vertical direction are arranged in a staggered manner, the falling film crystallization tube is vertically placed during working, the longitudinal section of each flow guide boss 3 is in a diamond shape, and the flow guide bosses 3 play a role in shunting materials, so that the heat exchange and cooling of the materials are more uniform, and the crystallization uniformity of the materials is improved; a V-shaped bayonet with a wide upper part and a narrow lower part is formed between the left and right adjacent guide bosses 3, the bayonet can effectively support and clamp crystals to prevent the crystals from falling off, and as the thickness of the crystals is generally 1-2mm, if the height of the guide bosses 3 is too high, the materials are easy to flow in a strand shape rather than a film shape, which is not beneficial to improving the uniformity of the crystals; if the height of the diversion boss 3 is too low, the diversion effect on the materials is not obvious.
The working principle of the falling film crystallization tube of the embodiment is as follows: the material distributor enables the materials to be uniformly distributed on the outer wall 1 of the falling film crystallization tube, the crystallization is carried out on the outer wall 1 of the crystallization tube, the surface of the crystallization tube can be utilized to the maximum extent, and the crystallization tube has higher surface utilization rate compared with the crystallization on the inner wall of the crystallization tube with the same heat exchange area, so that the production efficiency is improved, and the continuous industrial production is facilitated; secondly, the material transfers heat and cools with the cold medium flowing along the inner wall 2 of the falling film crystallization tube to generate crystallization gradually, when the thickness (generally 1-2mm) of the crystallization is smaller than the axial height (namely the initial crystallization stage) of the diversion boss 3, the diversion boss 3 plays a role of 'shunting' on the material, so that the heat exchange and cooling of the material are more uniform, the crystallization uniformity of the material is improved, and the two diversion bosses 3 adjacent in the vertical direction are arranged in a staggered way, so that the material continues to flow in a film form at the middle lower part of the crystallization tube after being shunted for a plurality of times, and the radial aggregation tendency of the material is further reduced; the crystallization is carried out to a certain degree, when the thickness of the crystallization is greater than the axial height of the guide bosses 3, a bayonet which is similar to a V shape and is wide at the top and narrow at the bottom is formed between the left and right adjacent guide bosses 3, and the bayonet can support and clamp the crystallization to prevent the crystallization from falling off.
The working process of the falling film crystallization tube of the embodiment is as follows:
the material to be purified is distributed on the outer wall of the crystallization tube and flows from top to bottom along the outer wall 1 of the falling film crystallization tube, the cold medium material flows from top to bottom along the inner wall 2 of the falling film crystallization tube, in the flowing process, the material and the cold medium material exchange heat and cool to generate crystallization gradually, and in the initial crystallization stage, the diversion boss 3 plays a role in shunting the material, so that the heat exchange and the cool of the material are more uniform, and the crystallization uniformity of the material is improved; when the material flows to the well lower part of crystallizer outer wall 1, two adjacent water conservancy diversion bosss 3 crisscross settings in the vertical direction, make the material continue to be the film form and flow in the lower part of crystallizer after the reposition of redundant personnel for a plurality of times, and then reduce the radial gathering trend crystallization later stage of material, form the bayonet socket of narrow similar "V" type about wide between the adjacent water conservancy diversion boss 3 about, this bayonet socket can support the crystallization that produces and block in the bayonet socket, prevents that the crystallization from droing.
Example 2
Referring to fig. 4, fig. 4 shows an outer wall 1 of a falling film crystallization tube of the present embodiment.
The present embodiment is different from embodiment 1 in that: the outer wall 1 of the falling film crystallization tube is also uniformly provided with a plurality of anti-slip grains 4, the anti-slip grains protrude outwards or sink inwards by 0.1-1mm along the outer wall 1 of the falling film crystallization tube, the anti-slip grains 4 are beneficial to crystallization to generate a concave-convex structure, the grabbing arm force between the crystallization and the outer wall 1 wall surface of the falling film crystallization tube is improved, the crystallization is prevented from falling off from the wall surface of the falling film crystallization tube, the anti-slip grains 4 can be star-shaped, wave-shaped, cross-shaped and the like, and the anti-slip grains can be formed by crystallizing to generate a concave-convex structure.
Example 3
Referring to fig. 5, fig. 5 shows the inner wall 2 of the falling film crystallization tube of the present embodiment.
The present embodiment is different from embodiment 1 in that: the inner wall 2 of the falling film crystallization tube is uniformly provided with a plurality of cold and heat medium distribution bosses 5 with the axial height of 0.5-3mm, two adjacent cold and heat medium distribution bosses 5 in the vertical direction are arranged in a staggered mode, the longitudinal sections of the cold and heat medium distribution bosses 5 are triangular, and the cold and heat medium distribution bosses 5 play a role in shunting the cold medium, so that heat exchange between materials and the cold medium is more uniform, the materials are cooled more uniformly, and the crystallization uniformity of the materials is improved.
Example 4
Referring to fig. 6, fig. 6 shows the inner wall 2 of the falling film crystallization tube (vertically placed) of the present embodiment.
The inner wall 2 of the falling film crystallization tube is uniformly provided with a plurality of flow guide bosses 3 with the axial height of 0.5-3mm, two adjacent flow guide bosses 3 in the vertical direction are arranged in a staggered manner, the longitudinal sections of the flow guide bosses 3 are triangular, and the flow guide bosses 3 play a role in shunting materials, so that the heat exchange and cooling of the materials are more uniform, and the crystallization uniformity of the materials is improved; a V-shaped bayonet with a wide upper part and a narrow lower part is formed between the left and right adjacent guide bosses 3, the bayonet can effectively support and clamp crystals to prevent the crystals from falling off, and as the thickness of the crystals is generally 1-2mm, if the height of the guide bosses 3 is too high, the materials are easy to flow in a strand shape rather than a film shape, which is not beneficial to improving the uniformity of the crystals; if the height of the diversion boss 3 is too low, the diversion effect on the materials is not obvious.
The working principle of the falling film crystallization tube of the embodiment is as follows: when the thickness of the crystal (generally 1-2mm) is smaller than the axial height of the flow guide boss 3 (namely the initial crystallization stage), the flow guide boss 3 plays a role in shunting the material, so that the heat exchange and the temperature reduction of the material are more uniform, the crystallization uniformity of the material is improved, and the two flow guide bosses 3 adjacent in the vertical direction are arranged in a staggered manner, so that the material continuously flows in a film form at the middle lower part of the crystallization tube after being shunted for a plurality of times, and the radial aggregation tendency of the material is further reduced; the crystallization is carried out to a certain degree, when the thickness of the crystallization is greater than the axial height of the guide bosses 3, a bayonet which is similar to a V shape and is wide at the top and narrow at the bottom is formed between the left and right adjacent guide bosses 3, and the bayonet can support and clamp the crystallization to prevent the crystallization from falling off.
The working process of the falling film crystallization tube of the embodiment is as follows:
the material to be purified is distributed on the inner wall 2 of the crystallization tube and flows from top to bottom along the inner wall 2 of the falling film crystallization tube, the cold medium substance flows from top to bottom along the outer wall of the falling film crystallization tube, in the flowing process, the material and the cold medium substance exchange heat and cool to gradually generate crystallization, and in the initial crystallization stage, the diversion boss 3 plays a role in shunting the material, so that the heat exchange and the cool down of the material are more uniform, and the crystallization uniformity of the material is improved; when the material flows to the middle lower part of the inner wall 1 of the crystallization tube, two adjacent guide bosses 3 in the vertical direction are arranged in a staggered mode, so that the material continues to flow in a film form at the middle lower part of the crystallization tube after being shunted for a plurality of times, the later crystallization period of the radial gathering trend of the material is further reduced, a V-shaped bayonet with the upper width and the lower width similar to those of the bayonet is formed between the left and right adjacent guide bosses 3, and the bayonet can support and clamp the generated crystal in the bayonet to prevent the crystal from falling off.
Example 5
Referring to fig. 7, fig. 7 shows the inner wall 2 of the falling film crystallization tube of the present embodiment.
The present embodiment is different from embodiment 4 in that: the inner wall 2 of the falling film crystallization tube is also uniformly provided with a plurality of anti-slip lines 4, the anti-slip lines protrude outwards or sink inwards by 0.1-1mm along the inner wall 2 of the falling film crystallization tube, the anti-slip lines 4 are beneficial to crystallization to generate a concave-convex structure, the grabbing arm force between the crystallization and the inner wall 2 of the falling film crystallization tube is improved, and the crystallization is prevented from falling off from the wall surface of the falling film crystallization tube.
Example 6
Referring to fig. 8, fig. 8 shows the outer wall 1 of the falling film crystallization tube (vertically placed) of the present embodiment.
This embodiment is different from embodiment 5 in that: the outer wall 1 of the falling film crystallization tube is uniformly provided with a plurality of cold and heat medium distribution bosses 5 with the axial height of 0.5-3mm, two adjacent cold and heat medium distribution bosses 5 in the vertical direction are arranged in a staggered mode, the longitudinal sections of the cold and heat medium distribution bosses 5 are triangular, and the cold and heat medium distribution bosses 5 play a role in shunting the cold medium, so that heat exchange between materials and the cold medium is more uniform, the materials are cooled more uniformly, and the crystallization uniformity of the materials is improved.
Example 7
The present embodiment is different from embodiment 1 in that: the upper part of the longitudinal section of the diversion boss 3 is arc-shaped or triangular (as shown in fig. 9).
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit and scope of the invention, and it is intended that all equivalent modifications and variations be covered by the appended claims without departing from the spirit and scope of the invention.
Claims (10)
1. A falling film crystallization tube is characterized in that: when the inner wall crystallization is adopted, a plurality of diversion bosses for shunting materials are arranged on the inner wall of the falling film crystallization tube; when the outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is provided with a plurality of diversion bosses for shunting materials, and when the falling film crystallization tube is used, the upper part of the longitudinal section of each diversion boss is in a shape with a narrow upper part and a wide lower part.
2. The falling film crystallization tube of claim 1, wherein: all the diversion bosses are uniformly distributed on the inner wall or the outer wall of the falling film crystallization tube.
3. The falling film crystallization tube of claim 2, wherein: two adjacent guide bosses in the vertical direction are arranged in a staggered mode.
4. The falling film crystallization tube of claim 1, wherein: when inner wall crystallization is adopted, the inner wall of the falling film crystallization tube is also provided with anti-skid grains; when the outer wall crystallization is adopted, the outer wall of the falling film crystallization tube is also provided with anti-skid grains.
5. The falling film crystallization tube of claim 4, wherein: the anti-skid lines are protruded outwards or sunken inwards by 0.1-1mm along the inner wall or the outer wall of the falling film crystallization tube.
6. The falling film crystallization tube of claim 1, wherein: when the inner wall is adopted for crystallization, a plurality of cold and heat medium distribution bosses are arranged on the outer wall of the falling film crystallization tube; when the outer wall is adopted for crystallization, a plurality of cold and heat medium distribution bosses are arranged on the inner wall of the falling film crystallization tube.
7. The falling film crystallization tube of claim 6, wherein: the axial height of the cold and heat medium distribution boss is 0.5-3 mm;
and/or the upper part of the longitudinal section of the cooling and heating medium distribution boss is in a shape with a narrow top and a wide bottom.
8. The falling film crystallization tube of claim 1, wherein: the axial height of the flow guide boss is 0.5-3 mm.
9. The falling film crystallization tube of claim 1, characterized in that: the falling film crystallization tube is cylindrical, square column-shaped or hollow polygonal.
10. A falling film crystallizer is characterized in that: comprising the falling film crystallization tube of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220243437.8U CN217312036U (en) | 2022-01-14 | 2022-01-14 | Falling film crystallization tube and falling film crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220243437.8U CN217312036U (en) | 2022-01-14 | 2022-01-14 | Falling film crystallization tube and falling film crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217312036U true CN217312036U (en) | 2022-08-30 |
Family
ID=82994554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220243437.8U Active CN217312036U (en) | 2022-01-14 | 2022-01-14 | Falling film crystallization tube and falling film crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217312036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115591670A (en) * | 2022-10-14 | 2023-01-13 | 四川大学（Cn） | Falling film structure for strengthening removal of micro dust |
-
2022
- 2022-01-14 CN CN202220243437.8U patent/CN217312036U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115591670A (en) * | 2022-10-14 | 2023-01-13 | 四川大学（Cn） | Falling film structure for strengthening removal of micro dust |
| CN115591670B (en) * | 2022-10-14 | 2024-04-05 | 四川大学 | Falling film structure for strengthening removal of tiny dust |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217312036U (en) | Falling film crystallization tube and falling film crystallizer | |
| US4493719A (en) | Method of separation by fractional crystallization from a liquid mixture | |
| WO2001057293A9 (en) | Single crystal growing device and production method of single crystal using the device and single crystal | |
| CN102383184A (en) | Crystal, and method and device for casting same | |
| TW201619453A (en) | Device for moving small insulating plate at bottom of polycrystalline silicon ingot furnace and polycrystalline silicon ingot furnace | |
| WO2023134233A1 (en) | Continuous falling film melting crystallizer | |
| JPH02225633A (en) | Production of aluminum with high purity | |
| CN213327923U (en) | Water cooling screen structure of single crystal furnace | |
| US5342475A (en) | Method of growing single crystal of compound semiconductor | |
| JP4092738B2 (en) | Method for separating a substance from a liquid mixture by crystallization | |
| CN1027963C (en) | Parametric pump fractional crystallization method and PFC crystallizer | |
| US4588562A (en) | Apparatus for purifying crystals | |
| CN112675568B (en) | Separation and purification device and separation and purification method | |
| CN206028677U (en) | Reduce device of crystallizer molten steel super -heated rate | |
| WO2011116660A1 (en) | Method for purifying silicon | |
| CN115418708A (en) | Crystal cooling device used in crystal drawing | |
| JP3798829B2 (en) | Crystallizer and crystallization method | |
| CN103880586B (en) | The multistage crystallization method of p-Xylol | |
| CN202246974U (en) | Polysilicon thermal field with local cooling device | |
| JPS58167733A (en) | Method of refining aluminum | |
| JP4817329B2 (en) | Method and apparatus for producing spherical crystals | |
| CN216703412U (en) | Efficient continuous falling film melting crystallizer | |
| CN220801994U (en) | Falling film crystallizer and purification system | |
| EP1268378B1 (en) | Finishing of neopentyl glycol | |
| JPS599136A (en) | Continuous production device for high purity aluminum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |