CN112316476A - Cold crystallizer - Google Patents
Cold crystallizer Download PDFInfo
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- CN112316476A CN112316476A CN202011221481.0A CN202011221481A CN112316476A CN 112316476 A CN112316476 A CN 112316476A CN 202011221481 A CN202011221481 A CN 202011221481A CN 112316476 A CN112316476 A CN 112316476A
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- tank body
- stirring
- crystallizer
- jacket
- crystallization tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0813—Cleaning containers having tubular shape, e.g. casks, barrels, drums by the force of jets or sprays
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The application relates to a cold separation crystallizer, which comprises a crystallizing tank body and a stirring mechanism, wherein a feeding hole and an exhaust hole are formed in the top of the crystallizing tank body, and a discharging hole is formed in the bottom of the crystallizing tank body. The outer wall of the crystallization tank body is provided with a jacket, and a cooling liquid for cooling and heat exchanging the solution in the crystallization tank body is arranged in the jacket. The solution in the crystallizing tank body exchanges heat with the cooling liquid in the jacket, and the solution is cooled to separate out crystals. This application is cleared up the internal wall of crystallizer through the clean brush hair on the stirring rotor, ensures the clean of the internal wall of crystallizer for the heat transfer can be progressive smoothly, reaches the effect that promotes cold crystallization efficiency.
Description
Technical Field
The application relates to the field of chemical production equipment, in particular to a cold separating crystallizer.
Background
The cooling crystallization is a process of precipitating a solute by cooling a solution to lower the solubility of the solute to a supersaturated solution, and is suitable for a substance whose solubility is significantly reduced with a decrease in temperature. It can obtain very pure crystal products from solutions with very high impurity content, and is suitable for many mixture systems, isomer systems and heat-sensitive systems which are difficult to separate. Substances with the same chemical composition can be crystallized into two or more crystals with different structures under different physical and chemical conditions, and the crystals have different physical and chemical properties, so that the control of crystallization parameters is very critical in chemical production.
The related solution crystallization equipment is mainly a kettle type crystallizer and comprises an internal circulation type cooling crystallizer and an external circulation type cooling crystallizer. The internal circulation type cooling crystallizer is usually a jacket type crystallization kettle with stirring, the cooling capacity required by cooling crystallization is provided by a jacket, the heat exchange area is small, and the heat exchange capacity is not large. The crystallization cold energy of the external circulation type cooling crystallizer is usually provided by an external heat exchanger. The heat transfer coefficient is large, the heat exchange area is variable, but a proper circulating pump must be selected to avoid the abrasion and the breakage of the suspended crystal, and an external heat exchanger is easy to scale, so that the use is influenced.
In view of the above-mentioned related technologies, the inventors believe that the solution in the cold precipitation crystallizer is cooled to precipitate crystals, which are liable to adhere to the inner side wall of the crystallizer, and thus the crystallization efficiency is affected.
Disclosure of Invention
In order to improve the interior solution cooling of cold crystallizer and separate out the crystallization easily with the inside lateral wall adhesion of crystallizer, influence crystallization efficiency, this application provides a cold crystallizer of separating out.
The cold separation crystallizer provided by the application adopts the following technical scheme:
a cold separation crystallizer comprises a crystallization tank body and a stirring mechanism, wherein the top of the crystallization tank body is provided with a feeding hole and an exhaust hole, and the bottom of the crystallization tank body is provided with a discharge hole; a jacket is arranged on the outer wall of the crystallization tank body, and cooling liquid for cooling and heat exchanging the solution in the crystallization tank body is arranged in the jacket; the stirring mechanism comprises a stirring motor and a stirring rotor, an output shaft of the stirring motor is connected with the stirring rotor through gear transmission, the stirring rotor is located inside the crystallizing tank, and the stirring rotor is provided with cleaning bristles for cleaning the inner wall of the crystallizing tank.
Through adopting above-mentioned technical scheme, the internal solution of crystallizer carries out the heat transfer with the coolant liquid in the jacket, and the crystal is appeared in the solution cooling, and when agitator motor drove stirring rotor and stirs solution, the clean brush hair on the stirring rotor cleared up the internal wall of crystallizer for the cleanness of the internal wall of crystallizer is ensured, makes the heat transfer can go on smoothly, reaches the effect that promotes cold crystallization efficiency.
Preferably, the stirring rotor comprises a stirring shaft and stirring blades spirally arranged along the length direction of the stirring shaft, and the cleaning bristles are positioned at one end, far away from the stirring shaft, of the stirring blades.
Through adopting above-mentioned technical scheme, spiral helicine stirring vane can carry out intensive mixing to solution, and stirring vane drives clean brush hair and clears up the internal wall of crystallizer simultaneously, ensures the cleanness of the internal wall of crystallizer to the crystal that is brushed down by clean brush hair is internal along helical blade landing to crystallizer, effectively reduces the probability that clean brilliant secondary glues the wall.
Preferably, one end of the stirring blade, which is far away from the stirring shaft, is provided with a plurality of rubber scraping blades along the length direction of the stirring blade.
Through adopting above-mentioned technical scheme, support the clean brush hair through setting up of squeegee for the clean brush hair can more effectual inner wall to the crystallizer body clear up, and squeegee also can clear up the inner wall of the crystallizer body simultaneously, further promotes the cleaning efficiency of crystal on the inner wall of the crystallizer body, reaches the effect that promotes cold precipitation crystallization efficiency.
Preferably, the bottom of the stirring shaft is provided with a scraper plate along the width direction of the crystallization tank body.
Through adopting above-mentioned technical scheme, scrape the flitch and stir the crystal of the bottom of the crystallizer jar body for the crystal is discharged through the discharge gate smoothly, effectively reduces the crystal and piles up the phenomenon of blockking up the discharge gate.
Preferably, the bottom of the scraper plate is provided with scraper bristles.
Through adopting above-mentioned technical scheme, scrape the material brush hair and can clear up the crystal of crystallizer body bottom, can also avoid scraping the flitch simultaneously and directly cause wearing and tearing with the internal wall butt of crystallizer, reach the extension and scrape flitch life's effect.
Preferably, two parallel partition plates are arranged in the jacket from top to bottom along the circumferential direction of the tank body, the partition plates are spirally arranged, one end of each partition plate is fixedly connected with the outer wall of the crystallization tank body, and the other end of each partition plate is fixedly connected with the jacket; the cavity in the jacket is divided into two parts by the two partition plates to form two cooling water channels, the two cooling water channels are respectively provided with a liquid inlet and a liquid outlet for the inlet and the outlet of cooling liquid, and the two liquid inlets are respectively connected with a cooling water pump.
Through adopting above-mentioned technical scheme, form two cooling water channels through two division boards in pressing from both sides the cover, effectively promote the flow velocity of the cooling liquid in the cover of pressing from both sides, effectively promote the circulation speed of the cooling liquid of accomplishing the heat transfer in pressing from both sides the cover, reach the effect that promotes heat exchange efficiency.
Preferably, the flow directions of the cooling liquid in the two cooling water channels are opposite.
Through adopting above-mentioned technical scheme for the flow direction of cooling water is opposite in two cooling water channels, makes the cooling liquid temperature of jar body contact even, makes the even heat transfer of the solution of jar internal portion, effectively promotes the heat exchange efficiency of solution.
Preferably, a cleaning water channel is formed in the top of the stirring shaft along the length direction of the stirring shaft, a plurality of cleaning nozzles are formed in the outer side wall of the stirring shaft, and the plurality of cleaning nozzles are communicated with the cleaning water channel; the top of the stirring shaft is connected with a conveying pipeline, and the conveying pipeline is connected with a cleaning water pump.
Through adopting above-mentioned technical scheme, can be comparatively convenient wash the crystallization tank body through setting up of washing water pump, washing water course and washing nozzle.
Preferably, a plurality of the washing nozzles are directed toward the cleaning bristles.
Through adopting above-mentioned technical scheme, be convenient for clear up the clean brush hair.
Preferably, be equipped with two three way solenoid valves between pipeline and the washing water pump, two three way solenoid valves have two water inlets and a delivery port, two three way solenoid valve's delivery port and pipeline intercommunication, a water inlet and the washing water pump 327 intercommunication of two three way solenoid valves, another water inlet is connected with the cold air pump.
Through adopting above-mentioned technical scheme, when the cold crystallizer of separating out cools off the crystallization to solution, through two three way solenoid valve intercommunication cold air pumps, let in the internal portion of crystallizer with air conditioning, the improvement promotes solution cooling water course, reaches the effect that promotes cold crystallization efficiency of separating out.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the solution in the crystallization tank body exchanges heat with the cooling liquid in the jacket, the solution is cooled to separate out crystals, the stirring motor drives the stirring rotor to stir the solution, and meanwhile, the cleaning bristles on the stirring rotor clean the inner wall of the crystallization tank body, so that the cleanness of the inner wall of the crystallization tank body is ensured, the heat exchange can be smoothly carried out, and the effect of improving the crystallization efficiency of cold separation is achieved;
2. the spiral stirring blade can fully stir the solution, and meanwhile, the stirring blade drives the cleaning brush to clean the inner wall of the crystallization tank body, so that the cleanness of the inner wall of the crystallization tank body is ensured, and crystals brushed by the cleaning brush slide into the crystallization tank body along the spiral blade, so that the probability of secondary wall adhesion of the cleaned crystals is effectively reduced;
3. when the cold separation crystallizer cools and crystallizes the solution, the cold air pump is communicated through the two-position three-way electromagnetic valve, cold air is introduced into the interior of the crystallization tank, the solution cooling water channel is further improved, and the effect of improving the cold separation crystallization efficiency is achieved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a cold crystallizer in the embodiment of the present application;
FIG. 2 is a schematic sectional view of a jacket in an embodiment of the present application
FIG. 3 is a schematic sectional view of a cold crystallizer in an embodiment of the present application;
FIG. 4 is a schematic structural view of a stirring rotor in the embodiment of the present application.
Description of reference numerals: 1. a crystallization tank body; 11. a feed inlet; 12. an exhaust port; 13. a discharge port; 2. a jacket; 21. a partition plate; 22. a cooling water channel; 221. a liquid inlet; 222. a liquid outlet; 23. a cooling water pump; 3. a stirring mechanism; 31. a stirring motor; 32. a stirring rotor; 321. a stirring blade; 322. a stirring shaft; 323. cleaning a water channel; 324. cleaning the nozzle; 325. a delivery conduit; 326. a two-position three-way electromagnetic valve; 327. cleaning the water pump; 328. a cold air pump; 33. cleaning the bristles; 34. a rubber blade; 35. a scraping plate; 351. scraping bristles.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a cold separating crystallizer. Referring to fig. 1, the cold separation crystallizer comprises a crystallization tank body 1 and a stirring mechanism 3, wherein a feed inlet 11 and an exhaust outlet 12 are arranged at the top of the crystallization tank body 1, and a discharge outlet 13 is arranged at the bottom of the crystallization tank body. The outer wall of the crystallizing tank body 1 is provided with a jacket 2, and a cooling liquid for cooling and heat exchanging the solution in the crystallizing tank body 1 is arranged in the jacket 2. The solution in the crystallization tank body 1 exchanges heat with the cooling liquid in the jacket 2, and the solution is cooled to separate out crystals.
Referring to fig. 1 and 2, two partition plates 21 arranged in parallel are arranged in the jacket 2 from top to bottom along the circumferential direction of the crystallization tank, the two partition plates 21 are arranged spirally, one end of each partition plate 21 is fixedly connected with the outer wall of the crystallization tank 1, and the other end of each partition plate is fixedly connected with the jacket 2. The two partition plates 21 divide the cavity in the jacket 2 into two to form two cooling water channels 22, the two cooling water channels 22 are respectively provided with a liquid inlet 221 and a liquid outlet 222 for the inlet and the outlet of cooling liquid, and the two liquid inlets 221 are respectively connected with a cooling water pump 223. Two cooling water channels 22 are formed in the jacket 2 through the two partition plates 21, the flowing speed of cooling liquid in the jacket 2 is effectively increased, the circulating speed of the cooling liquid for heat exchange in the jacket 2 is effectively increased, and the effect of improving the heat exchange efficiency is achieved. In addition, the flowing directions of the cooling liquid in the two cooling water channels 22 are opposite, so that the cooling liquid with lower temperature can be contacted with the bottoms of the top of the tank body, the temperature of the cooling liquid contacted with the tank body is uniform, the solution in the tank body can be uniformly subjected to heat exchange, and the heat exchange efficiency of the solution is effectively improved.
Referring to fig. 3 and 4, the stirring mechanism 3 includes a stirring motor 31 and a stirring rotor 32, and an output shaft of the stirring motor 31 and the stirring rotor 32 are connected by gear transmission. Stirring rotor 32 is located the crystallization tank body 1 inside, and stirring rotor 32 includes (mixing) shaft 322 and the stirring vane 321 that is spiral setting along (mixing) shaft 322 length direction, and the one end that stirring vane 321 kept away from (mixing) shaft 322 is equipped with the clearance brush hair that is used for clearing up the inner wall of crystallization tank body 1. When agitator motor 31 drives agitator rotor 32 and stirs solution, cleaning brush hair 33 on agitator rotor 32 clears up the internal wall of crystallizer 1, ensures the cleanness of the internal wall of crystallizer 1 for the heat transfer can be progressive smoothly, reaches the effect that promotes cold crystallization efficiency. And the crystal brushed by the cleaning brush 33 can slide to the bottom of the crystallization tank body 1 along the helical blade, so that the probability of secondary wall adhesion of the crystal cleaning is effectively reduced.
Referring to fig. 3 and 4, one end of the stirring blade 321 away from the stirring shaft 322 is provided with a plurality of rubber blades 34 along its length direction. The rubber sheet supports the cleaning bristles 33, so that the cleaning bristles 33 can more effectively clean the inner wall of the crystallization tank 1. Meanwhile, the rubber scraper 34 can also clean the inner wall of the crystallizing tank body 1, so that the cleaning efficiency of crystals on the inner wall of the crystallizing tank body 1 is further improved, and the effect of improving the cold precipitation crystallization efficiency is achieved. The stirring shaft bottom is equipped with along the crystallizer body 1 width direction and scrapes flitch 35, scrapes the flitch 35 bottom and is equipped with and scrapes material brush hair 351. Scrape flitch 35 and stir the crystal of the 1 bottom of the crystallization tank body for the crystal is discharged through discharge gate 13 smoothly, effectively reduces the crystal and piles up the phenomenon of blockking up discharge gate 13. Scrape material brush hair 351 can clear up the crystal of the crystallizer body 1 bottom, can also avoid scraping flitch 35 simultaneously and directly causing wearing and tearing with the 1 inner wall butt of the crystallizer body, reaches the extension and scrapes flitch 35 life's effect.
Referring to fig. 3 and 4, a cleaning water channel 323 is formed at the top of the stirring shaft 322 along the length direction thereof, and a plurality of cleaning nozzles 324 are formed on the outer side wall of the stirring shaft 322. The plurality of washing nozzles 324 are all communicated with the washing water passage 323, and the plurality of washing nozzles 324 are all directed toward the cleaning bristles 33. The top of the stirring shaft is connected with a conveying pipeline 325, and the conveying pipeline 325 is connected with a two-position three-way electromagnetic valve 326. The two-position three-way solenoid valve 326 has two water inlets and one water outlet, the water outlet of the two-position three-way solenoid valve 326 is communicated with the conveying pipeline 325, one water inlet of the two-position three-way solenoid valve 326 is communicated with the cleaning water pump 327, and the other water inlet is connected with the cold air pump 328. When the crystallization tank body 1 needs to be cleaned, the conveying pipeline 325 and the cleaning water pump 327 are communicated only through the two-position three-way electromagnetic valve 326, and the interior of the crystallization tank body 1 and the stirring rotor 32 can be cleaned conveniently. When the cold separation crystallizer cools and crystallizes the solution, the two-position three-way electromagnetic valve 326 is communicated with the cold air pump 328 to introduce cold air into the interior of the crystallization tank body 1, so that the solution cooling water channel 22 is further improved, and the effect of improving the cold separation crystallization efficiency is achieved.
The implementation principle of a cold separation crystallizer in the embodiment of the application is as follows: the cooling liquid is respectively introduced into the two cooling water channels 22 through the two cooling water pumps 223, so that the solution in the crystallization tank body 1 is subjected to rapid heat exchange, and the effect of improving the cooling crystallization efficiency is achieved. Stirring motor 31 drives stirring rotor 32 and stirs solution, and cleaning brush hair 33 and rubber scraper 34 on stirring rotor 32 clear up the internal wall of crystallizer 1, ensure the cleanness of the internal wall of crystallizer 1 for the heat transfer can go on the nature smoothly, reaches the effect that promotes cold crystallization efficiency. Simultaneously (mixing) shaft 322 drives scraper 35 and rotates, stirs the crystal of the 1 bottom of the crystallization tank body for the crystal is discharged through discharge gate 13 smoothly, effectively reduces the crystal and piles up the phenomenon of blockking up discharge gate 13.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A cold separation crystallizer is characterized in that: the device comprises a crystallization tank body (1) and a stirring mechanism (3), wherein the top of the crystallization tank body (1) is provided with a feeding hole (11) and an exhaust hole (12), and the bottom of the crystallization tank body is provided with a discharging hole (13); a jacket (2) is arranged on the outer wall of the crystallization tank body (1), and a cooling liquid for cooling and heat exchanging the solution in the crystallization tank body (1) is arranged in the jacket (2); rabbling mechanism (3) are including agitator motor (31) and stirring rotor (32), the output shaft and stirring rotor (32) of agitator motor (31) are connected through gear drive, stirring rotor (32) are located the crystallization tank body (1) inside, just be equipped with on stirring rotor (32) and be used for carrying out the clean brush hair (33) of clearing up to crystallization tank body (1) inner wall.
2. A cryo-crystallizer according to claim 1, characterized in that: stirring rotor (32) include (mixing) shaft (322) and be stirring vane (321) of spiral setting along (mixing) shaft (322) length direction, the clearance brush hair is located stirring vane (321) and keeps away from the one end of (mixing) shaft (322).
3. A cryo-crystallizer according to claim 2, characterized in that: and a plurality of rubber blades (34) are arranged at one end of the stirring blade (321) far away from the stirring shaft (322) along the length direction of the stirring blade.
4. A cryo-crystallizer according to claim 2, characterized in that: and a scraping plate (35) is arranged at the bottom of the stirring shaft (322) along the width direction of the crystallizing tank body (1).
5. A cryo-crystallizer according to claim 4, characterized in that: and scraping bristles (351) are arranged at the bottom of the scraping plate (35).
6. A cryo-crystallizer according to claim 1, characterized in that: two parallel partition plates (21) are arranged in the jacket (2) from top to bottom along the circumferential direction of the tank body, the partition plates (21) are spirally arranged, one end of each partition plate (21) is fixedly connected with the outer wall of the crystallization tank body (1), and the other end of each partition plate is fixedly connected with the jacket (2); the two partition plates (21) divide a cavity in the jacket (2) into two to form two cooling water channels (22), the two cooling water channels (22) are respectively provided with a liquid inlet (221) and a liquid outlet (222) for cooling liquid to enter and exit, and the two liquid inlets (221) are respectively connected with a cooling water pump (223).
7. A cryo-crystallizer according to claim 6, characterized in that: the flow directions of the cooling liquid in the two cooling water channels (22) are opposite.
8. A cryo-crystallizer according to claim 2, characterized in that: a cleaning water channel (323) is formed in the top of the stirring shaft (322) along the length direction of the stirring shaft, a plurality of cleaning nozzles (324) are formed in the outer side wall of the stirring shaft (322), and the plurality of cleaning nozzles (324) are communicated with the cleaning water channel (323); the top of the stirring shaft (322) is connected with a conveying pipeline (325), and the conveying pipeline (325) is connected with a cleaning water pump (327).
9. A cryo-crystallizer according to claim 8, wherein: the plurality of washing nozzles (324) are all towards the cleaning bristles (33).
10. A cryo-crystallizer according to claim 8, wherein: be equipped with two three way solenoid valve (326) between pipeline (325) and wash water pump (327), two three way solenoid valve (326) have two water inlets and a delivery port, the delivery port and pipeline (325) intercommunication of two three way solenoid valve (326), a water inlet and wash water pump (327) intercommunication of two three way solenoid valve (326), another water inlet is connected with cold air pump (328).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221481.0A CN112316476A (en) | 2020-11-05 | 2020-11-05 | Cold crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011221481.0A CN112316476A (en) | 2020-11-05 | 2020-11-05 | Cold crystallizer |
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| CN112316476A true CN112316476A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011221481.0A Pending CN112316476A (en) | 2020-11-05 | 2020-11-05 | Cold crystallizer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113828598A (en) * | 2021-09-18 | 2021-12-24 | 无锡四方友信股份有限公司 | Steel drum cleaning pipeline structure |
| CN113881504A (en) * | 2021-11-05 | 2022-01-04 | 安徽恒达药业有限公司 | Freeze-out device is used in menthol production |
| CN113893570A (en) * | 2021-06-11 | 2022-01-07 | 长春市吉达自动化系统有限公司 | High-efficient production system of lysine |
| CN114669078A (en) * | 2022-04-20 | 2022-06-28 | 广东锦坤实业有限公司 | Crystallization agitator tank is used in oleic acid separation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113893570A (en) * | 2021-06-11 | 2022-01-07 | 长春市吉达自动化系统有限公司 | High-efficient production system of lysine |
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| CN114669078A (en) * | 2022-04-20 | 2022-06-28 | 广东锦坤实业有限公司 | Crystallization agitator tank is used in oleic acid separation |
| CN114669078B (en) * | 2022-04-20 | 2024-03-12 | 广东锦坤实业有限公司 | Crystallization agitator tank for oleic acid separation |
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Application publication date: 20210205 |