CN216295256U - Crystallization device for producing adipic acid - Google Patents
Crystallization device for producing adipic acid Download PDFInfo
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- CN216295256U CN216295256U CN202122000117.8U CN202122000117U CN216295256U CN 216295256 U CN216295256 U CN 216295256U CN 202122000117 U CN202122000117 U CN 202122000117U CN 216295256 U CN216295256 U CN 216295256U
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Abstract
The utility model relates to a crystallization device for producing adipic acid, which comprises a support, a distillation tank and a crystallization tank, wherein the distillation tank and the crystallization tank are respectively arranged on the support; the distillation tank comprises a first tank body, a heating wire, a feeding pipe, an exhaust pipe and a first stirring mechanism, wherein the heating wire is embedded in the side wall of the first tank body and used for heating the first tank body, and the first stirring mechanism is arranged in the first tank body; one end of the feed pipe is fixed on the side wall of the first tank body, and one end of the exhaust pipe is arranged at the upper end part of the distillation tank; the crystallizing tank comprises a second tank body and a discharge pipe, the lower end of the connecting pipe is connected with the second tank body, and the upper end of the discharge pipe is arranged at the lower end part of the second tank body; the adipic acid quickly flows into the second tank body through the connecting pipe to be quickly cooled and crystallized, and the adipic acid is separated out, so that the crystallization efficiency of the feed liquid and the production efficiency of the adipic acid are improved.
Description
Technical Field
The utility model belongs to the technical field of adipic acid production equipment, and particularly relates to a crystallization device for producing adipic acid.
Background
Adipic acid is also called as adipic acid and is an important organic dibasic acid which can be subjected to esterification, amidation, acid-base neutralization or polycondensation with diamine or dihydric alcohol to form a high molecular polymer. Adipic acid is an important chemical raw material and is widely applied to the fields of chemical production, medicine, lubricant manufacturing and the like. The adipic acid is white crystals, the solubility of the adipic acid in water is greatly changed along with the temperature, and the solubility of the adipic acid can be increased by 20 times when the temperature of the solution is increased from 28 ℃ to 78 ℃; in the production of adipic acid, therefore, the adipic acid crystals are usually extracted or purified by cooling crystallization.
The Chinese utility model with the publication number of CN213031899U discloses a vacuum cooling crystallization device, which comprises a crystallization tank for placing feed liquid, a vacuum pump, and a pipeline for connecting the crystallization tank and the vacuum pump; the upper part of the crystallization tank is provided with a feeding pipe which is communicated with the crystallization tank; a discharge pipe is arranged at the bottom of the crystallization tank and is communicated with the crystallization tank; a bypass branch pipe is arranged between the feeding pipe and the discharging pipe; the side wall of the crystallization tank is provided with a coil pipe, and the inlet end of the coil pipe is connected with a steam inlet wire arranged outside the crystallization tank; the outlet end of the coil is connected with a steam outlet arranged outside the crystallizing tank; a stirring shaft is also arranged in the crystallizing tank; the stirring shaft is arranged along the vertical direction, and the end part of the stirring shaft is connected with a stirring motor fixedly arranged outside the crystallizing tank; the stirring shaft is sleeved with a stirring paddle; the feed liquid in the crystallization tank is cooled and crystallized by vacuumizing, the cooling speed of the feed liquid is low, and the crystallization efficiency of the feed liquid is poor; reducing the production efficiency of adipic acid.
SUMMERY OF THE UTILITY MODEL
In order to improve the crystallization efficiency of feed liquid and the production efficiency of adipic acid, the utility model provides a crystallization device for producing adipic acid; in order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a crystallization device for producing adipic acid comprises a support, a distillation tank and a crystallization tank, wherein the distillation tank and the crystallization tank are respectively arranged on the support, the distillation tank is positioned above the crystallization tank, a connecting pipe is arranged between the distillation tank and the crystallization tank, and a first control valve is arranged on the connecting pipe; the distillation tank comprises a first tank body, a heating wire, a feeding pipe, an exhaust pipe and a first stirring mechanism, wherein the heating wire is embedded in the side wall of the first tank body and used for heating the first tank body, and the first stirring mechanism is arranged in the first tank body and used for stirring the feed liquid in the first tank body; one end of the feed pipe is fixed on the side wall of the first tank body, and one end of the exhaust pipe is arranged at the upper end part of the distillation tank; the crystallizer includes the second jar of body and arranges the material pipe, the lower extreme and the second jar of body coupling of connecting pipe, the upper end setting of arranging the material pipe is in the lower tip of the second jar of body.
The crystallization device for producing adipic acid has the beneficial effects that: it is internal to flow into first jar with the feed liquid through the inlet pipe, under the heating effect of heater strip, makes the evaporation of water in the internal feed liquid of first jar, improves the concentration of feed liquid, and in the distillation process, the stirring of first rabbling mechanism improves the evaporation efficiency of moisture in the feed liquid, and after feed liquid concentration reached a definite value, first control valve was opened, flows into the internal quick cooling crystallization of second jar through the connecting pipe fast, and adipic acid is appeared to improve the crystallization efficiency of feed liquid and the production efficiency of adipic acid.
Furthermore, an annular cavity is formed in the side wall of the second tank body, a liquid injection pipe and a return pipe are arranged on the side wall of the second tank body, and one ends of the liquid injection pipe and the return pipe are communicated with the annular cavity respectively and used for injecting circulating cooling liquid into the annular cavity.
Has the advantages that: by arranging the annular cavity, circulating cooling liquid is injected into the annular cavity, so that the cooling efficiency of the crystallizing tank is improved, the crystallization efficiency of feed liquid is improved, and the crystallization amount of adipic acid is increased.
Further, the first stirring mechanism comprises a first driving motor, a first stirring shaft and a first stirring blade, the first stirring shaft is rotatably assembled in the first tank body, and the lower end of the first stirring shaft protrudes out of the first tank body and is fixedly butted with an output shaft of the first driving motor; the first stirring blade is arranged in the first tank body, and one end of the first stirring blade is fixed on the circumferential side surface of the first stirring shaft.
Has the advantages that: set first rabbling mechanism to first driving motor, (mixing) shaft and first stirring vane, simple structure incessantly stirs the feed liquid, is favorable to the evaporation of feed liquid even and feed liquid of feed liquid being heated.
Further, the crystallizer still includes second rabbling mechanism, second rabbling mechanism includes second driving motor, second (mixing) shaft and second stirring vane, the second (mixing) shaft rotates the assembly and is in the second jar body, the upper end of second (mixing) shaft is outstanding the second jar body is fixed with the output shaft butt joint of second driving motor, second stirring vane sets up in the second jar is internal, and one end is fixed on the circumference side of second (mixing) shaft.
Has the advantages that: through setting up second rabbling mechanism, make the feed liquid cooling that is located the crystallizer even quick, be favorable to the improvement of the crystallization efficiency of feed liquid.
Further, the first stirring mechanism further comprises a first scraper, one end of the first scraper is fixed on the circumferential side face of the first stirring shaft, and the other end of the first scraper is matched with the inner side face of the first tank body.
Has the advantages that: when the first stirring shaft rotates, the first scraper blade is driven to rotate, and the adipic acid adhered to the inner side surface of the first tank body is scraped off by the first scraper blade and flows into the crystallizing tank along with the feed liquid.
Furthermore, the second stirring mechanism further comprises a second scraper, one end of the second scraper is fixed on the circumferential side face of the second stirring shaft, and the other end of the second scraper is matched with the inner side face of the second tank body.
Has the advantages that: through setting up the second scraper blade, the second scraper blade rotates, clears and scrapes the jar internal side of second, makes the crystal of crystallization on the internal side of the second jar body drop, prevents to influence later stage crystallization efficiency.
Further, the crystallization device for producing adipic acid further comprises a separation tank, wherein the separation tank comprises a third tank body, a filter sieve, a liquid discharge pipe and a slag discharge pipe; a second control valve is arranged on the discharge pipe, and the lower end of the discharge pipe is fixed on the third tank body; the filter sieve is obliquely arranged in the third tank body, the liquid discharge pipe is arranged at the lower end of the third tank body, and the slag discharge pipe is arranged on the side surface of the third tank body and is matched with the lower end of the filter sieve.
Has the advantages that: when the crystallized feed liquid flows into the separation tank and passes through the filter sieve, adipic acid crystals are separated by the filter sieve and discharged from the slag discharge pipe, and the residual filtrate is discharged from the liquid discharge pipe.
Furthermore, the retort still includes the loudspeaker cover, the macrostoma end of loudspeaker cover is fixed the upper end of the first jar of body, the microcurrent end and the blast pipe butt joint of loudspeaker cover are fixed.
Has the advantages that: through setting up loudspeaker cover, be favorable to steam in the retort to flow in the blast pipe.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a crystallization apparatus for producing adipic acid according to the present invention;
FIG. 2 is a schematic partial perspective view of an embodiment of a crystallization apparatus for producing adipic acid according to the present invention;
FIG. 3 is a sectional view of a distillation tank of an embodiment of a crystallization apparatus for producing adipic acid according to the present invention;
FIG. 4 is a sectional view of a crystallization tank of an embodiment of a crystallization apparatus for producing adipic acid according to the present invention;
fig. 5 is a sectional view of a separation tank of an embodiment of a crystallization apparatus for producing adipic acid according to the present invention.
Reference numbers in the figures: 1-bracket, 2-distillation tank, 21-first tank body, 22-heating wire, 23-feeding pipe, 24-exhaust pipe, 3-crystallization tank, 31-second tank body, 32-discharge pipe, 33-annular chamber, 34-liquid injection pipe, 35-return pipe, 36-second control valve, 4-connecting pipe, 5-first control valve, 6-first stirring mechanism, 61-first stirring shaft, 62-first stirring blade, 63-first scraping plate, 7-second stirring mechanism, 71-first stirring shaft, 72-second stirring blade, 73-second scraping plate, 8-bidirectional output motor, 9-separation tank, 91-third tank body, 92-filtering screen, 93-liquid discharge pipe, 94-slag discharge pipe, 10-horn cover.
Detailed Description
The utility model is described in further detail below with reference to the following figures and detailed description:
the concrete structure of the embodiment of the crystallization device for producing adipic acid is shown in fig. 1 and fig. 2, and comprises a support 1, a distillation tank 2 and a crystallization tank 3, wherein the distillation tank 2 and the crystallization tank 3 are respectively arranged on the support 1, the distillation tank 2 is positioned above the crystallization tank 3, a connecting pipe 4 is arranged between the distillation tank 2 and the crystallization tank 3, and a first control valve 65 is arranged on the connecting pipe 4.
As shown in fig. 3, the distillation tank 2 comprises a first tank 21, a heating wire 22, a feeding pipe 23, an exhaust pipe 24 and a first stirring mechanism, wherein the heating wire 22 is embedded in the side wall of the first tank 21 and is used for heating the first tank 21, and the first stirring mechanism is arranged in the first tank 21 and is used for stirring the feed liquid in the first tank 21; one end of the feeding pipe 23 is fixed on the side wall of the first tank 21, and one end of the exhaust pipe 24 is provided with the upper end part of the distillation tank 2. In this embodiment, the first stirring mechanism comprises a first driving motor, a first stirring shaft 7161 and a first stirring blade 62, the first stirring shaft 7161 is rotatably assembled in the first tank 21, and the lower end of the first stirring shaft 7161 protrudes out of the first tank 21 and is in butt joint with an output shaft of the first driving motor; the first stirring blade 62 is arranged in the first tank 21, and one end of the first stirring blade is fixed on the circumferential side surface of the first stirring shaft 7161; set first rabbling mechanism to first driving motor, first (mixing) shaft 7161 and first stirring vane 62, simple structure ceaselessly stirs the feed liquid, is favorable to the evaporation of feed liquid with the feed liquid is heated evenly. The first stirring mechanism further comprises a first scraper 63, one end of the first scraper 63 is fixed on the circumferential side face of the first stirring shaft 7161, and the other end of the first scraper 63 is matched with the inner side face of the first tank body 21; when the first stirring shaft 7161 rotates, the first scraper 63 is driven to rotate, and the first scraper 63 scrapes off the adipic acid adhered to the inner side surface of the first tank 21 and flows into the crystallizer 3 along with the feed liquid. In other embodiments, the first stirring mechanism does not comprise the first scraper, and the arrangement of the first scraper is replaced by periodically cleaning the inner surface of the first tank.
As shown in FIG. 4, the crystallizing tank 3 includes a second tank 31 and a discharge pipe 32, the lower end of the connecting pipe 4 is connected to the second tank 31, and the upper end of the discharge pipe 32 is disposed at the lower end of the second tank 31. In this embodiment, an annular chamber 33 is formed in the side wall of the second tank 31, a liquid injection pipe 34 and a return pipe 35 are arranged on the side wall of the second tank 31, and one end of the liquid injection pipe 34 and one end of the return pipe 35 are respectively communicated with the annular chamber 33 and are used for injecting circulating cooling liquid into the annular chamber 33; by arranging the annular cavity 33, the circulating cooling liquid is injected into the annular cavity 33, the cooling efficiency of the crystallizing tank 3 is improved, and the crystallization efficiency of the feed liquid and the crystallization amount of adipic acid are improved. The crystallization tank 3 further comprises a second stirring mechanism 7, the second stirring mechanism 7 comprises a second driving motor, a second stirring shaft and a second stirring blade 72, the second stirring shaft is rotatably assembled in the second tank body 31, the upper end of the second stirring shaft protrudes out of the second tank body 31 and is fixedly butted with an output shaft of the second driving motor, the second stirring blade 72 is arranged in the second tank body 31, one end of the second stirring blade is fixed on the circumferential side surface of the second stirring shaft, and the first driving motor and the second driving motor are the same bidirectional output motor 8; by arranging the second stirring mechanism 7, the feed liquid in the crystallization tank 3 is uniformly and quickly cooled, and the crystallization efficiency of the feed liquid is improved; and the same motor is adopted for driving, so that the cost is saved. The second stirring mechanism 7 further comprises a second scraper 73, one end of the second scraper 73 is fixed on the circumferential side surface of the second stirring shaft, and the other end of the second scraper 73 is matched with the inner side surface of the second tank 31; when the first stirring shaft 7161 rotates, the first scraper 63 is driven to rotate, and the first scraper 63 scrapes off the adipic acid adhered to the inner side surface of the first tank 21 and flows into the crystallizer 3 along with the feed liquid. In other embodiments, no second stirring structure is provided in the crystallization tank, or the second stirring structure is driven by a separate motor.
In this embodiment, as shown in fig. 5, the crystallization apparatus for producing adipic acid further includes a separation tank 9, and the separation tank 9 includes a third tank 91, a filter sieve 92, a liquid discharge pipe 93, and a slag discharge pipe 94; the second control valve 36 is arranged on the discharge pipe 32, and the lower end of the discharge pipe 32 is fixed on the third tank 91; the filter sieve 92 is obliquely arranged in the third tank 91, the liquid discharge pipe 93 is arranged at the lower end of the third tank 91, and the slag discharge pipe 94 is arranged on the side surface of the third tank 91 and is matched with the lower end of the filter sieve 92; when the crystallized feed liquid flows into the separation tank 9 and passes through the filter sieve 92, adipic acid crystals are separated by the filter sieve 92 and discharged from the residue discharge pipe 94, and the remaining filtrate is discharged from the drain pipe 93. The distillation retort 2 further comprises a horn cover 10, the large-opening end of the horn cover 10 is fixed at the upper end part of the first tank body 21, and the small-opening end of the horn cover 10 is fixedly connected with an exhaust pipe 24 in a butt joint mode; the horn cover 10 is provided to facilitate the flow of the steam in the retort 2 into the exhaust pipe 24. In other embodiments, the bell jar is not provided and one end of the vent pipe is directly fixed to the first tank.
During the use, feed liquid flows into the first tank body 21 through the feed pipe 23, under the heating action of the heating wire 22, the water in the feed liquid in the first tank body 21 is evaporated, the concentration of the feed liquid is improved, in the distillation process, the first stirring mechanism stirs, the evaporation efficiency of the water in the feed liquid is improved, after the concentration of the feed liquid reaches a certain value, the first control valve 65 is opened, the feed liquid quickly flows into the second tank body 31 through the connecting pipe 4 to be quickly cooled and crystallized, adipic acid is separated out, after the separation is completed, the second control valve 36 is opened, when the feed liquid passes through the filter sieve 92, adipic acid crystals are separated by the filter sieve 92 and are discharged from the slag discharge pipe 94, and the residual filtrate is discharged from the liquid discharge pipe 93.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. The crystallization device for producing the adipic acid is characterized by comprising a support, a distillation tank and a crystallization tank, wherein the distillation tank and the crystallization tank are respectively arranged on the support, the distillation tank is positioned above the crystallization tank, a connecting pipe is arranged between the distillation tank and the crystallization tank, and a first control valve is arranged on the connecting pipe; the distillation tank comprises a first tank body, a heating wire, a feeding pipe, an exhaust pipe and a first stirring mechanism, wherein the heating wire is embedded in the side wall of the first tank body and used for heating the first tank body, and the first stirring mechanism is arranged in the first tank body and used for stirring the feed liquid in the first tank body; one end of the feed pipe is fixed on the side wall of the first tank body, and one end of the exhaust pipe is arranged at the upper end part of the distillation tank; the crystallizer includes the second jar of body and arranges the material pipe, the lower extreme and the second jar of body coupling of connecting pipe, the upper end setting of arranging the material pipe is in the lower tip of the second jar of body.
2. The crystallization device for producing adipic acid according to claim 1, wherein an annular chamber is formed in the side wall of the second tank, a liquid injection pipe and a return pipe are arranged on the side wall of the second tank, and one ends of the liquid injection pipe and the return pipe are respectively communicated with the annular chamber and used for injecting circulating cooling liquid into the annular chamber.
3. The crystallization device for producing adipic acid according to claim 2, wherein the first stirring mechanism comprises a first driving motor, a first stirring shaft and a first stirring blade, the first stirring shaft is rotatably assembled in the first tank body, and the lower end of the first stirring shaft protrudes out of the first tank body and is in butt joint with an output shaft of the first driving motor; the first stirring blade is arranged in the first tank body, and one end of the first stirring blade is fixed on the circumferential side surface of the first stirring shaft.
4. The crystallization apparatus for producing adipic acid according to claim 3, wherein the crystallization tank further comprises a second stirring mechanism, the second stirring mechanism comprises a second driving motor, a second stirring shaft and a second stirring blade, the second stirring shaft is rotatably assembled in the second tank body, the upper end of the second stirring shaft protrudes out of the second tank body and is in butt joint with an output shaft of the second driving motor, the second stirring blade is disposed in the second tank body, and one end of the second stirring shaft is fixed on the circumferential side surface of the second stirring shaft.
5. The crystallization device for producing adipic acid according to claim 4, wherein the first stirring mechanism further comprises a first scraper, one end of the first scraper is fixed on the circumferential side surface of the first stirring shaft, and the other end of the first scraper is fitted to the inner side surface of the first tank.
6. The crystallization device for producing adipic acid according to claim 4, wherein the second stirring mechanism further comprises a second scraper, one end of the second scraper is fixed on the circumferential side surface of the second stirring shaft, and the other end of the second scraper is fitted to the inner side surface of the second tank.
7. The crystallization apparatus for producing adipic acid according to claim 1, further comprising a separation tank, the separation tank comprising a third tank body, a filter sieve, a liquid discharge pipe, and a slag discharge pipe; a second control valve is arranged on the discharge pipe, and the lower end of the discharge pipe is fixed on the third tank body; the filter sieve is obliquely arranged in the third tank body, the liquid discharge pipe is arranged at the lower end of the third tank body, and the slag discharge pipe is arranged on the side surface of the third tank body and is matched with the lower end of the filter sieve.
8. The crystallization device for producing adipic acid according to claim 1, wherein the distillation tank further comprises a horn cover, a large opening end of the horn cover is fixed to the upper end of the first tank, and a small opening end of the horn cover is in butt joint with the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122000117.8U CN216295256U (en) | 2021-08-24 | 2021-08-24 | Crystallization device for producing adipic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122000117.8U CN216295256U (en) | 2021-08-24 | 2021-08-24 | Crystallization device for producing adipic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216295256U true CN216295256U (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122000117.8U Active CN216295256U (en) | 2021-08-24 | 2021-08-24 | Crystallization device for producing adipic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216295256U (en) |
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2021
- 2021-08-24 CN CN202122000117.8U patent/CN216295256U/en active Active
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