CN212974240U

CN212974240U - L-carnitine tartrate refining system

Info

Publication number: CN212974240U
Application number: CN202021551675.2U
Authority: CN
Inventors: 张*; 张
Original assignee: Huanggang Normal University
Current assignee: Huanggang Normal University
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-04-16
Anticipated expiration: 2030-07-30

Abstract

A L-carnitine tartrate refining system, which comprises a crystallization kettle, an ethanol head tank, a gasification chamber, a first recovery chamber and a second recovery chamber, the crystallization kettle comprises a kettle body, a stirring paddle and a motor, wherein a return pipe, a liquid inlet and a feed inlet are arranged at the top of the kettle body, a first condenser is arranged outside the return pipe, a discharge hole is arranged at the bottom of the kettle body, an air guide ring is arranged in the kettle body, the air guide ring is connected with a third outlet of the gasification chamber, the first outlet of the ethanol elevated tank is connected with the liquid inlet, a second outlet of the ethanol elevated tank is connected with a spray head at the top of the gasification chamber through a booster pump, a first outlet of the gasification chamber is connected with an inlet of the first recovery chamber through a second condenser, and a second outlet of the gasification chamber is connected with an inlet of a second recovery chamber, and an outlet of the first recovery chamber and an outlet of the second recovery chamber are both connected with an inlet of the ethanol elevated tank. The utility model discloses can solve the long fungus problem of crystallization kettle to can effectively improve the mobility of product crystal, improve the purity of product.

Description

L-carnitine tartrate refining system

Technical Field

The utility model relates to a chemical industry crystallization technical field especially relates to a levogyration carnitine tartrate refining system.

Background

L-carnitine is an amino acid which can promote fat to be converted into energy, can reduce body fat and reduce body weight, and has no toxic or side effect on human body. However, L-carnitine is very hygroscopic and is therefore usually salified before use. The L-carnitine tartrate is the most commonly used salt forming form, the action and the effect of the L-carnitine tartrate are basically the same as those of the L-carnitine, the moisture absorption is very low, and the L-carnitine tartrate is convenient to apply. In the actual process for producing the L-carnitine tartrate, after the crystallization kettle is used for a period of time, the phenomenon of bacteria growth is easy to occur, the product quality is influenced, and the product crystal form is also influenced. If the crystallization kettle is sterilized once after every second production, the operation is complicated, and the production progress is seriously influenced. In addition, the existing crystallization operation is to add the crude product into 90% ethanol solution to dissolve and crystallize, but the crystal generated in this way has poor flowability.

Disclosure of Invention

The utility model aims at providing a levogyration carnitine tartrate refining system can solve the long fungus problem of crystallization kettle among the refined process of levogyration carnitine tartrate crude product to can effectively improve the mobility of resultant crystal, improve the purity of product.

In order to achieve the above purpose, the left-handed carnitine tartrate refining system designed by the utility model comprises a crystallization kettle, an ethanol elevated tank, a gasification chamber, a first recovery chamber and a second recovery chamber, wherein the crystallization kettle comprises a kettle body, a stirring paddle arranged on the central axis of the kettle body, and a motor arranged on the kettle body and connected with the stirring paddle, a backflow pipe, a liquid inlet and a liquid inlet are arranged at the top of the kettle body, a first condenser is arranged outside the backflow pipe, a discharge port is arranged at the bottom of the kettle body, an air guide ring is arranged in the kettle body and connected with a third outlet of the gasification chamber, a first outlet of the ethanol elevated tank is connected with the liquid inlet, a second outlet of the ethanol elevated tank is connected with a spray head at the top of the gasification chamber through a pressure pump, a first outlet of the gasification chamber is connected with an inlet of the first recovery chamber through a second condenser, and a second outlet of the gasification chamber is connected with an inlet of a second recovery chamber, and an outlet of the first recovery chamber and an outlet of the second recovery chamber are both connected with an inlet of the ethanol elevated tank.

In the technical scheme, a first jacket is arranged outside the kettle body, a second jacket is arranged outside the gasification chamber, a third jacket is arranged outside an ethanol conveying pipe between a second outlet of the elevated tank and the pressure pump, and a first steam inlet, a second steam inlet, a third steam inlet, a first steam outlet, a second steam outlet and a third steam outlet are respectively arranged on the first jacket, the second jacket and the third jacket.

In the technical scheme, the kettle body is provided with the thermometer and the densimeter, the feeding hole is provided with the kettle cover, and the discharging hole is provided with the bottom valve.

In the above technical scheme, the first outlet of the ethanol elevated tank is connected with the liquid inlet through a liquid inlet pipe, the liquid inlet pipe is provided with an ethanol valve, the liquid inlet pipe is communicated with the water inlet pipe, and the water inlet pipe is provided with a water valve.

In the technical scheme, the gasification chamber is provided with a vacuum meter.

In the above technical scheme, the first outlet of the gasification chamber is arranged at the top of the gasification chamber, and the second outlet of the gasification chamber and the third outlet of the gasification chamber are arranged at the bottom of the gasification chamber.

Among the above-mentioned technical scheme, the first export of vaporizer links to each other with hot-air pipe, the last hot-air valve that is provided with of hot-air pipe.

In the technical scheme, the third outlet of the gasification chamber is communicated with the gas guide ring through an ethanol steam guide pipe, a heat insulation layer is arranged outside the ethanol steam guide pipe, and a pulse gas pump is arranged on the ethanol steam guide pipe.

In the above technical scheme, the first recovery chamber is provided with a first window, and the second recovery chamber is provided with a second window.

In the above technical scheme, the outlet of the first recovery chamber and the outlet of the second recovery chamber are connected with the inlet of the ethanol head tank through an ethanol recovery pipe, a liquid discharge valve is arranged between the outlet of the first recovery chamber and the ethanol recovery pipe, a vacuum valve is arranged at the outlet of the inlet of the first recovery chamber, and a liquid pump is arranged on the ethanol recovery pipe.

The utility model has the advantages that:

1. the ethanol solution with the concentration of about 75 percent and the crude L-carnitine tartrate are added into the crystallization kettle from the liquid adding port and the material adding port, and the ethanol solution can disinfect the interior of the crystallization kettle and inhibit the growth of bacteria by stirring of the stirring paddle, on the other hand, because the solubility of the L-carnitine tartrate in water is higher than that of the L-carnitine tartrate in ethanol, the crude L-carnitine tartrate can be completely dissolved in the solution, the possibility of using impurities in the crude L-carnitine tartrate as seed crystals is reduced, and the purity of the product obtained after crystallization is increased.

2. The gasification chamber can gasify the ethanol into ethanol steam, and then the ethanol is added into the kettle body through the gas guide ring arranged in the crystallization kettle in a gas blowing mode, so that the concentration of the ethanol in the kettle body is gradually improved, the problem of low crystal purity caused by overlarge local concentration of the solution can be effectively prevented, and the crystal form of the product is better.

3. The recovery chamber can effectively recover the ethanol, prevent the ethanol from being lost in each link, improve the utilization rate of the ethanol and reduce the discharge amount of waste liquid and waste gas.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1-crystallization kettle, 101-kettle body, 102-stirring paddle, 103-motor, 104-reflux pipe, 105-first condenser, 106-liquid inlet, 107-liquid inlet, 108-kettle cover, 109-discharge outlet, 110-bottom valve, 111-air guide ring, 112-first jacket, 113-first steam inlet, 114-first steam outlet, 115-densimeter, 116-thermometer, 2-ethanol head tank, 201-ethanol head tank first outlet, 202-liquid inlet pipe, 203-ethanol valve, 204-water inlet pipe, 205-water valve, 206-ethanol head tank second outlet, 207-ethanol transport pipe, 208-pressure pump, 209-third jacket, 210-third steam inlet, 211-third steam outlet, 3-gasification chamber, 301-spray head, 302-vacuum meter, 303-gasification chamber first outlet, 304-gasification chamber second outlet, 305-gasification chamber third outlet, 306-ethanol steam guide pipe, 307-heat preservation layer, 308-pulse gas pump, 309-second jacket, 310-second steam inlet, 311-second steam outlet, 4-first recovery chamber, 401-first window, 402-vacuum valve, 403-liquid discharge valve, 404-second condenser, 5-second recovery chamber, 501-second window, 6-hot air pipe, 601-hot air valve, 7-liquid pump, 8-ethanol recovery pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are only used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the system or component in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be taken as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

As shown in fig. 1, a l-carnitine tartrate refining system comprises a crystallization kettle 1, an ethanol elevated tank 2, a gasification chamber 3, a first recovery chamber 4 and a second recovery chamber 5, wherein the crystallization kettle 1 comprises a kettle body 101, a stirring paddle 102 installed on the central axis of the kettle body 101, and a motor 103 installed on the kettle body 101 and connected with the stirring paddle 102, the top of the kettle body 101 is provided with a return pipe 104, a liquid inlet 106 and a material inlet 107, a first condenser 105 is arranged outside the return pipe 104, the bottom of the kettle body 101 is provided with a material outlet 109, a gas guide ring 111 is arranged in the kettle body 101, the gas guide ring 111 is connected with a third outlet 305 of the gasification chamber, a first outlet 201 of the ethanol elevated tank is connected with the liquid inlet 106, a second outlet 206 of the ethanol elevated tank is connected with a spray nozzle 301 at the top of the gasification chamber 3 through a pressure pump 208, a first outlet 303 of the gasification chamber is connected with an inlet of the first recovery chamber through a second condenser 404, the second outlet 304 of the gasification chamber is connected with the inlet of the second recovery chamber 5, and the outlet of the first recovery chamber 4 and the outlet of the second recovery chamber 5 are both connected with the inlet of the ethanol elevated tank 2. The utility model discloses can realize complete circulated operation mode for the reaction can continuously go on.

A first jacket 112 is arranged outside the kettle body 101, a second jacket 309 is arranged outside the gasification chamber 3, a third jacket 209 is arranged outside the ethanol conveying pipe 207 between the second outlet of the elevated tank and the pressure pump 208, and a first steam inlet 113, a second steam inlet 310, a third steam inlet 210, a first steam outlet 114, a second steam outlet 311 and a third steam outlet 211 are respectively arranged on the first jacket 112, the second jacket 309 and the third jacket 209. The kettle body 101 is provided with a thermometer 116 and a densimeter 115, the feeding port 107 is provided with a kettle cover 108, and the discharging port 109 is provided with a bottom valve 110. The crystallization kettle 1 is a main reactor for refining the L-carnitine tartrate crude product, a stirring paddle 102 is used for stirring solution, a motor 103 is used for driving the stirring paddle, a return pipe 104 can prevent volatilization of ethanol in the crystallization process, a first condenser 105 is used for condensing the ethanol in the return pipe 104, a liquid inlet 106 is used for adding water and ethanol, a liquid inlet 107 is used for adding the L-carnitine tartrate crude product, a kettle cover 108 is used for opening and closing the liquid inlet 107, a liquid outlet 109 is used for discharging the crystallized solution, a bottom valve 110 is used for opening and closing the liquid outlet 109, an air guide ring 111 is used for inputting ethanol steam, a first jacket 112 can be filled with steam to heat and preserve heat the kettle body 101, a density meter 115 is used for measuring the density of the solution in the kettle body 101, a thermometer 116 is used for measuring the temperature of the solution in the kettle body 101, a second jacket 309 is used for heating and preserving heat of the gasification chamber 3, and a third jacket 209 is used for.

The first outlet 201 of the ethanol elevated tank is connected with the liquid inlet 106 through a liquid inlet pipe 202, an ethanol valve 203 is arranged on the liquid inlet pipe 202, the liquid inlet pipe 202 is communicated with a water inlet pipe 204, and a water valve 205 is arranged on the water inlet pipe 204. The ethanol head tank 2 is used for storing ethanol, ethanol can be added into the crystallization kettle 1, ethanol in a recovery chamber can be collected, the ethanol valve 203 can control the addition amount of the ethanol, and the water valve 205 can control the addition amount of water.

The vaporizing chamber 3 is provided with a vacuum gauge 302. The first outlet 303 of the gasification chamber is disposed at the top of the gasification chamber 3, and the second outlet 304 of the gasification chamber and the third outlet 305 of the gasification chamber are disposed at the bottom of the gasification chamber 3. The first outlet 303 of the gasification chamber is connected with a hot air pipe 6, and a hot air valve 601 is arranged on the hot air pipe 6. The third outlet 305 of the gasification chamber is communicated with the gas guide ring 111 through an ethanol steam conduit 306, a heat insulation layer 307 is arranged outside the ethanol steam conduit 306, and a pulse gas pump 308 is arranged on the ethanol steam conduit 306. The vacuum state of the gasification chamber 3 is favorable for the gasification of ethanol spray, the hot air introduced into the hot air pipe 6 and the pulse gas pump 308 are favorable for the ethanol steam to enter the air guide ring 111, and the heat insulation layer 307 can effectively insulate the heat of the ethanol steam guide pipe 306, so that the ethanol steam in the ethanol steam guide pipe 306 is not condensed in the pipe.

The first recovery chamber 4 is provided with a first window 401, and the second recovery chamber 5 is provided with a second window 501. An outlet of the first recovery chamber 4 and an outlet of the second recovery chamber 5 are connected with an inlet of the ethanol elevated tank 2 through an ethanol recovery pipe 8, a liquid discharge valve 403 is arranged between the outlet of the first recovery chamber 4 and the ethanol recovery pipe 8, a vacuum valve 402 is arranged at an inlet of the first recovery chamber 4, and a liquid pump 7 is arranged on the ethanol recovery pipe 8. The first recovery chamber 4 and the second recovery chamber 5 are used for collecting condensed ethanol, and the liquid pump 7 can return the ethanol in the first recovery chamber 4 and the second recovery chamber 5 to the ethanol head tank 2 without causing the loss and waste of the ethanol.

The utility model discloses a theory of operation does:

when needing to use the utility model discloses the time, at first close all valves after, open first condenser 105 and second condenser 404, open kettle cover 108, add a certain amount of crude L-carnitine tartrate and get into the kettle body 101 from feed inlet 107 in, cover kettle cover 108, open water valve 205, water flows into the kettle body 101 from inlet 106 through feed inlet pipe 202, after adding suitable amount of water, close water valve 205, open ethanol valve 203, ethanol flows into the kettle body 101 from inlet 106 through feed inlet pipe 202 in, after adding suitable amount of ethanol, close ethanol valve 203, the volume of adding water and ethanol needs to be configured into the ethanol solution that the concentration is about 75%. The motor 103 is started, the motor 103 drives the stirring paddle 102 to stir and dissolve the solution in the kettle body 101, meanwhile, steam is introduced into the first jacket 112, the steam enters the first jacket 112 from the first steam inlet and then leaves the first jacket 112 from the first steam outlet 114, the steam can heat the solution in the kettle body 101 to a certain temperature, the thermometer 116 can display the temperature, and the densimeter 115 can display the real-time density of the ethanol solution on line. And (3) introducing steam into the second jacket 309 and the third jacket 209 respectively, wherein the steam enters the second jacket 309 from a second steam inlet and then leaves the second jacket 309 from a second steam outlet 311, and the steam enters the third jacket 209 from a third steam inlet and then leaves the third jacket 209 from a third steam outlet, so that the preheating and heat preservation of the gasification chamber 3 and the ethanol conveying pipe 207 can be realized. The vacuum valve 402 is opened to evacuate the vaporizer 3, and the vacuum gauge 302 can display the vacuum degree of the vaporizer 3 in real time, and after reaching a certain vacuum degree, the vacuum valve 402 is closed. Ethanol in the ethanol conveying pipe 207 is preheated by steam in a third jacket 209, pressurized by a pressurizing pump 208, sprayed into a gasification chamber 3 in a vacuum state by a spray head 301, atomized in the gasification chamber 3 and gasified into ethanol steam, a hot air valve 601 and a pulse gas pump 308 are started, hot air is continuously introduced into the gasification chamber 3, the hot air drives the ethanol hot steam to enter an air guide ring 111 through an ethanol steam guide pipe 306 and overflow from the air guide ring 111, the air guide ring 111 is arranged in the kettle body 101, so that the ethanol steam overflowing from the air guide ring 111 can improve the density of an ethanol solution in the kettle body 101, the pulse gas pump 308 can prevent L-carnitine tartrate crystals from condensing around the air guide opening of the air guide ring 111 to block the air guide opening, when the gasification chamber 3 is vacuumized, a small amount of ethanol steam is possibly extracted, and enters a first recovery chamber 4 after being condensed by a second condenser 404, observing the liquid level through the first window 401, opening the liquid discharge valve 403 when the liquid level reaches a certain height, enabling the ethanol to enter the ethanol recovery pipe 8, and enabling the ethanol to return to the ethanol head tank 2 when the liquid pump 7 is opened; a small amount of condensed ethanol in the gasification chamber 3 enters the second recovery chamber 5, the liquid level is observed through the second window 501, when the liquid level reaches a certain height, the liquid pump 7 is started, and the ethanol returns to the ethanol high-level tank 2 through the ethanol recovery pipe 8. According to the operation method, the concentration of the ethanol solution in the kettle body 101 can be uniformly improved, and the L-carnitine tartrate crystals are slowly separated out along with the improvement of the concentration of the ethanol, so that high-purity product seed crystals can be produced, and the purity and the fluidity of the obtained L-carnitine tartrate final product are good.

In the above operation process, the vacuum pump is used for vacuumizing the gasification chamber 3, the ethanol is sprayed and gasified, and hot air is continuously introduced to bring ethanol steam into the kettle body 101 in a circulating manner, when the ethanol solubility in the kettle body 101 reaches 90%, the ethanol steam is not introduced into the kettle body 101, the steam introduction into the first jacket 112 is stopped, the kettle body 101 is slowly cooled, the L-carnitine tartrate crystals begin to be slowly precipitated in the kettle body 101, when the temperature is reduced to a certain temperature, the bottom valve 110 is opened, the crystallized solution is discharged from the discharge port 109, and then the crystallized solution enters the filtration link of the next working section.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are all within the protection scope of the present invention.

Claims

1. An L-carnitine tartrate refining system is characterized in that: comprises a crystallization kettle, an ethanol elevated tank, a gasification chamber, a first recovery chamber and a second recovery chamber, wherein the crystallization kettle comprises a kettle body, a stirring paddle arranged on the central axis of the kettle body, and a motor arranged on the kettle body and connected with the stirring paddle, a return pipe, a liquid inlet and a feed inlet are arranged at the top of the kettle body, a first condenser is arranged outside the return pipe, a discharge hole is arranged at the bottom of the kettle body, an air guide ring is arranged in the kettle body, the air guide ring is connected with a third outlet of the gasification chamber, the first outlet of the ethanol elevated tank is connected with the liquid inlet, the second outlet of the ethanol elevated tank is connected with a spray head at the top of the gasification chamber through a pressure pump, the first outlet of the gasification chamber is connected with the inlet of the first recovery chamber through a second condenser, the second outlet of the gasification chamber is connected with the inlet of the second recovery chamber, and the outlet of the first recovery chamber and the outlet of the second recovery chamber are both connected with the inlet of the ethanol head tank.

2. The l-carnitine tartrate refining system of claim 1, wherein: the device comprises a kettle body, a first jacket, a second jacket, a third jacket, a first steam inlet, a second steam inlet, a third steam outlet, a second steam outlet and a third steam outlet, wherein the first jacket is arranged outside the kettle body, the second jacket is arranged outside the gasification chamber, the third jacket is arranged outside an ethanol conveying pipe between a second outlet of the elevated tank and a pressure pump, and the first jacket, the second jacket and the third jacket are respectively provided with the first steam inlet, the second steam inlet, the third steam inlet, the first steam outlet, the second steam outlet and the third steam outlet.

3. The l-carnitine tartrate refining system of claim 1 or 2, wherein: the kettle body is provided with a thermometer and a densimeter, the feeding port is provided with a kettle cover, and the discharging port is provided with a bottom valve.

4. The l-carnitine tartrate refining system of claim 1, wherein: the first outlet of the ethanol elevated tank is connected with the liquid inlet through a liquid inlet pipe, the liquid inlet pipe is provided with an ethanol valve, the liquid inlet pipe is communicated with a water inlet pipe, and the water inlet pipe is provided with a water valve.

5. The l-carnitine tartrate refining system of claim 1, wherein: and a vacuum meter is arranged on the gasification chamber.

6. The l-carnitine tartrate refining system of claim 1 or claim 5, wherein: the first outlet of the gasification chamber is arranged at the top of the gasification chamber, and the second outlet of the gasification chamber and the third outlet of the gasification chamber are arranged at the bottom of the gasification chamber.

7. The l-carnitine tartrate refining system of claim 6, wherein: the first outlet of the gasification chamber is connected with a hot air pipe, and the hot air pipe is provided with a hot air valve.

8. The l-carnitine tartrate refining system of claim 6, wherein: and a third outlet of the gasification chamber is communicated with the gas guide ring through an ethanol steam guide pipe, a heat insulation layer is arranged outside the ethanol steam guide pipe, and a pulse gas pump is arranged on the ethanol steam guide pipe.

9. The l-carnitine tartrate refining system of claim 1, wherein: the first recovery chamber is provided with a first window, and the second recovery chamber is provided with a second window.

10. The l-carnitine tartrate refining system of claim 1 or 9, wherein: the outlet of the first recovery chamber and the outlet of the second recovery chamber are connected with the inlet of the ethanol high-level tank through an ethanol recovery pipe, a liquid discharge valve is arranged between the outlet of the first recovery chamber and the ethanol recovery pipe, a vacuum valve is arranged at the outlet of the inlet of the first recovery chamber, and a liquid pump is arranged on the ethanol recovery pipe.