CN202028230U - Sublimation and refinement device applicable to pyromellitic dianhydride - Google Patents
Sublimation and refinement device applicable to pyromellitic dianhydride Download PDFInfo
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- CN202028230U CN202028230U CN2011201239435U CN201120123943U CN202028230U CN 202028230 U CN202028230 U CN 202028230U CN 2011201239435 U CN2011201239435 U CN 2011201239435U CN 201120123943 U CN201120123943 U CN 201120123943U CN 202028230 U CN202028230 U CN 202028230U
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- cylindrical tube
- sublimation
- fused salt
- heating clamber
- thermocouple
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Abstract
The utility model relates to a sublimation and refinement device, in particular to a sublimation and refinement device applicable to pyromellitic dianhydride, which aims to solve the problems of a conventional pyromellitic dianhydride sublimation and refinement method that the refinement accuracy is low, more impurities exist and the method is not suitable for batch manufacturing. The sublimation and refinement device applicable to pyromellitic dianhydride is characterized in that one end of a first thermocouple is inserted into a crystallization chamber; one ends of a plurality of cylindrical pipes are all open ends; the other ends of the plurality of the cylindrical pipes are all closed ends; the plurality of the cylindrical pipes are arranged horizontally; the open ends of the plurality of the cylindrical pipes are fixedly mounted on the partition board from top to bottom sequentially; the closed ends of the plurality of the cylindrical pipes are positioned in a heating chamber; the plurality of the cylindrical pipe are communicated with the crystallization chamber; one end of a first fused salt heating rod is vertically inserted into the heating chamber and is close to the closed ends of the cylindrical pipes; one end of a second fused salt heating rod is horizontally inserted into the bottom of the heating chamber; one end of the second thermocouple is horizontally inserted to the heating chamber; and a feeding port is formed at the upper end of the heating chamber. The sublimation and refinement device applicable to pyromellitic dianhydride is used for the sublimation and refinement of pyromellitic dianhydride.
Description
Technical field
The utility model relates to a kind of sublimation purification device, is specifically related to a kind of sublimation purification device that is applicable to pyromellitic acid anhydride.
Background technology
The method that pyromellitic acid anhydride distillation is at present purified has rectification method, solvent method, high-temperature gas to carry method, and rectification method requires harsh to material purity, require material purity greater than 98%; The solvent method product loss is big, and purity is low, impurity is many; High-temperature gas carries the method treating capacity and is unsuitable for large-scale production for a short time.
To sum up, there is the problem that the purification precision is low, impurity many and be not suitable for producing in batches in the method for existing pyromellitic acid anhydride distillation purification.
The utility model content
There is the problem that the purification precision is low, impurity many and be not suitable for producing in batches in the utility model for the method that solves existing pyromellitic acid anhydride distillation purification, and then a kind of sublimation purification device that is applicable to pyromellitic acid anhydride is provided.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: the sublimation purification device of pyromellitic acid anhydride that is applicable to of the present utility model comprises the end door, the vacuum cooled pipe, first thermocouple, dividing plate, the first fused salt heating rod, housing, second thermocouple, the second fused salt heating rod and a plurality of cylindrical tube, described dividing plate is positioned at housing and housing is divided into crystallisation chamber and heating clamber along its length, be positioned at the end door is installed on the housing of crystallisation chamber one side, one end of described vacuum cooled pipe is communicated with crystallisation chamber, one end of described first thermocouple is inserted to crystallization chamber, one end of described a plurality of cylindrical tube is openend, the other end of described a plurality of cylindrical tube is closed end, described a plurality of cylindrical tube all is horizontally disposed with and the openend of described a plurality of cylindrical tube is packed on the dividing plate from top to bottom successively, the closed end of described a plurality of cylindrical tube all is positioned at heating clamber, described a plurality of cylindrical tube all is communicated with crystallisation chamber, one end of the described first fused salt heating rod vertically is inserted in the heating clamber and the closed end of close described a plurality of cylindrical tube, one end level of the described second fused salt heating rod is inserted into the bottom of heating clamber, one end of described second thermocouple is inserted in the heating clamber, the upper end of described heating clamber is provided with feeding mouth, and the bottom of described heating clamber is provided with discharge gate.
The utlity model has following beneficial effect: sublimation purification device of the present utility model adopts a plurality of cylindrical tube, and will heat cylindrical tube by the first fused salt heating rod and the second fused salt heating rod, thereby make the pyromellitic acid anhydride distillation in the cylindrical tube and separate out by crystallisation chamber, compare purification precision height with existing method, the purification precision reaches more than 99%, and impurity is few; Reasonable, the simple to operate and suitable batch process of the utility model topology layout.
Description of drawings
Fig. 1 is that the master of sublimation purification device of the present utility model looks cutaway view.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 explanation, the sublimation purification device that is applicable to pyromellitic acid anhydride of present embodiment comprises end door 1, vacuum cooled pipe 4, first thermocouple 5, dividing plate 6, the first fused salt heating rod 7, housing 10, second thermocouple 11, the second fused salt heating rod 12 and a plurality of cylindrical tube 2, described dividing plate 6 is positioned at housing 10 and housing 10 is divided into crystallisation chamber 3 and heating clamber 9 along its length, be positioned at end door 1 is installed on the housing 10 of crystallisation chamber 3 one sides, one end of described vacuum cooled pipe 4 is communicated with crystallisation chamber 3, one end of described first thermocouple 5 is inserted in the crystallisation chamber 3, one end of described a plurality of cylindrical tube 2 is openend, the other end of described a plurality of cylindrical tube 2 is closed end, described a plurality of cylindrical tube 2 all is horizontally disposed with and the openend of described a plurality of cylindrical tube 2 is packed on the dividing plate 6 from top to bottom successively, the closed end of described a plurality of cylindrical tube 2 all is positioned at heating clamber 9, described a plurality of cylindrical tube 2 all is communicated with crystallisation chamber 3, one end of the described first fused salt heating rod 7 vertically is inserted in the heating clamber 9 and the closed end of close described a plurality of cylindrical tube 2, one end level of the described second fused salt heating rod 12 is inserted into the bottom of heating clamber 9, one end of described second thermocouple 11 is inserted in the heating clamber, the upper end of described heating clamber 9 is provided with feeding mouth 8, and the bottom of described heating clamber 9 is provided with discharge gate 13.
During use, pyromellitic acid anhydride is put into special-purpose distillation charging boat, the charging boat that will distil is then put into cylindrical tube 2, and distillation charging boat is used to adorn pyromellitic acid anhydride.
The specific embodiment two: in conjunction with Fig. 1 explanation, the described sublimation purification device of present embodiment also comprises high-temperature resistant seal ring 14, and described high-temperature resistant seal ring 14 is between end door 1 and housing 10.So sealing function is played in design.Other composition is identical with embodiment one with annexation.
Embodiment:
In heating clamber 9, fill it up with fused salt by feeding mouth 8, by the first fused salt heating rod 7 and the second fused salt heating rod 12 fused salt in the fused salt heating chamber 9 is raised to uniform temperature, the distillation charging boat that the pyromellitic acid anhydride crude product will be housed is then put into cylindrical tube 2, shutdown side door 1, to vacuumize in the crystallisation chamber 3 by vacuum cooled pipe 4, separate out in crystallisation chamber 3 after distilling from cylindrical tube 2 through the pyromellitic acid anhydride in the certain hour distillation charging boat at a certain temperature, residue is stayed in the distillation charging boat.
Operation principle:
During use, in heating clamber 9, fill it up with fused salt by feeding mouth 8, by the first fused salt heating rod 7 and the second fused salt heating rod 12 fused salt in the fused salt heating chamber 9 is raised to uniform temperature, the distillation charging boat that pyromellitic acid anhydride will be housed is then put into cylindrical tube 2, shutdown side door 1, to vacuumize in the crystallisation chamber 3 by vacuum cooled pipe 4, in crystallisation chamber 3, separate out after distilling from cylindrical tube 2 through the pyromellitic acid anhydride in the certain hour distillation charging boat at a certain temperature, through the pyromellitic acid anhydride purity height that sublimation purification device of the present utility model is purified, good product quality.
Claims (2)
1. sublimation purification device that is applicable to pyromellitic acid anhydride, it is characterized in that: described sublimation purification device comprises end door (1), vacuum cooled pipe (4), first thermocouple (5), dividing plate (6), the first fused salt heating rod (7), housing (10), second thermocouple (11), the second fused salt heating rod (12) and a plurality of cylindrical tube (2), described dividing plate (6) is positioned at housing (10) and housing (10) is divided into crystallisation chamber (3) and heating clamber (9) along its length, be positioned at end door (1) is installed on the housing (10) of crystallisation chamber (3) one sides, one end of described vacuum cooled pipe (4) is communicated with crystallisation chamber (3), one end of described first thermocouple (5) is inserted in the crystallisation chamber (3), one end of described a plurality of cylindrical tube (2) is openend, the other end of described a plurality of cylindrical tube (2) is closed end, described a plurality of cylindrical tube (2) all is horizontally disposed with and the openend of described a plurality of cylindrical tube (2) from top to bottom is packed on the dividing plate (6) successively, the closed end of described a plurality of cylindrical tube (2) all is positioned at heating clamber (9), described a plurality of cylindrical tube (2) all is communicated with crystallisation chamber (3), one end of the described first fused salt heating rod (7) vertically is inserted in the heating clamber (9) and the closed end of close described a plurality of cylindrical tube (2), one end level of the described second fused salt heating rod (12) is inserted into the bottom of heating clamber (9), one end of described second thermocouple (11) is inserted in the heating clamber, the upper end of described heating clamber (9) is provided with feeding mouth (8), and the bottom of described heating clamber (9) is provided with discharge gate (13).
2. the sublimation purification device that is applicable to pyromellitic acid anhydride according to claim 1 is characterized in that: described sublimation purification device also comprises high-temperature resistant seal ring (14), and described high-temperature resistant seal ring (14) is positioned between end door (1) and the housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201239435U CN202028230U (en) | 2011-04-25 | 2011-04-25 | Sublimation and refinement device applicable to pyromellitic dianhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201239435U CN202028230U (en) | 2011-04-25 | 2011-04-25 | Sublimation and refinement device applicable to pyromellitic dianhydride |
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| CN202028230U true CN202028230U (en) | 2011-11-09 |
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| CN2011201239435U Expired - Fee Related CN202028230U (en) | 2011-04-25 | 2011-04-25 | Sublimation and refinement device applicable to pyromellitic dianhydride |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671414A (en) * | 2012-05-16 | 2012-09-19 | 六盘水神驰生物科技有限公司 | Heat transfer enhancement sublimation device |
| CN102671415A (en) * | 2012-05-16 | 2012-09-19 | 六盘水神驰生物科技有限公司 | Sublimation-method pyrogallic acid one-step operation sublimation device |
| CN103435628A (en) * | 2013-09-09 | 2013-12-11 | 黑龙江省科学院石油化学研究院 | Purification method of benzenetetracarboxylic anhydride |
| CN103446773A (en) * | 2013-09-03 | 2013-12-18 | 上海大学 | Conveyor belt type evaporating material purification device |
| CN113604899A (en) * | 2021-09-08 | 2021-11-05 | 许绝电工股份有限公司 | Continuous production method of polyimide fibers |
-
2011
- 2011-04-25 CN CN2011201239435U patent/CN202028230U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671414A (en) * | 2012-05-16 | 2012-09-19 | 六盘水神驰生物科技有限公司 | Heat transfer enhancement sublimation device |
| CN102671415A (en) * | 2012-05-16 | 2012-09-19 | 六盘水神驰生物科技有限公司 | Sublimation-method pyrogallic acid one-step operation sublimation device |
| CN102671414B (en) * | 2012-05-16 | 2014-09-24 | 六盘水神驰生物科技有限公司 | Heat transfer enhancement sublimation device |
| CN103446773A (en) * | 2013-09-03 | 2013-12-18 | 上海大学 | Conveyor belt type evaporating material purification device |
| CN103435628A (en) * | 2013-09-09 | 2013-12-11 | 黑龙江省科学院石油化学研究院 | Purification method of benzenetetracarboxylic anhydride |
| CN113604899A (en) * | 2021-09-08 | 2021-11-05 | 许绝电工股份有限公司 | Continuous production method of polyimide fibers |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20130425 |