TWI709429B - Constant pressure crystallization and granulation system for dense fluid extracts - Google Patents

Abstract

The present invention is a constant pressure crystallization and granulation system for compact fluid extracts, which includes a compression cylinder, a crystallization and granulation collection tank, and an amorphous extract collection tank; wherein the compression tank and the extraction tank output end of the extraction system Connection, the compression cylinder can provide extractant and compact fluid extract input, the compression cylinder is provided with a pressure maintaining piston; the crystal granulation collection tank is connected with the compression cylinder by a compression delivery pipe, and the compression delivery pipe is juxtaposed There is a back pressure control valve. The crystal granulation collection tank is provided with a nozzle opposite to the end of the compression conveying pipe, and the nozzle is connected to the end of the compression conveying pipe; the amorphous extract collection tank is connected to the compression cylinder for recycling The substance of the extract; thereby, a constant pressure crystallization and granulation system for solid-gas separation at a constant pressure to output the required solid extract is provided.

Description

Constant pressure crystallization granulation system for dense fluid extracts

The present invention is a constant pressure crystallization and granulation system for compact fluid extracts, especially a constant pressure crystallization and granulation system that uses constant pressure for solid-gas separation to output the required solid extracts.

Because the dense fluid extraction technology is to increase the temperature and pressure of the extract and the extractant (such as carbon dioxide, nitrogen) to the critical temperature and critical pressure, the extract and the extractant form a dense fluid fluid, and then according to the requirements The properties and conditions of the extract can be extracted and separated to obtain the desired extract; and because the compact fluid extraction has the advantages of purification, non-toxicity, no solvent residue, and the extractant can be recycled and reused, the compact fluid extraction technology is wide It is widely used by cosmetics, medicine, and food industries.

However, after the required extract is extracted and separated, it still contains the extractant and its form is a dense fluid. Therefore, the extractant must be removed and the extract solidified (crystallization, granulation). Purified and easy-to-use extracts can be obtained; and the current crystallization and granulation technology is to press the dense fluid extract containing the extractant and spray it through a nozzle to obtain a solidified extract.

However, when the compact fluid extract containing the extractant is pressurized, it is intermittently pressurized according to the ejection time, so as to facilitate the ejection of the extractant and compact fluid extract at the required pressure, so that the extractant And the dense fluid extract is decompressed at high speed to obtain the crystalline particles of the extract (such as the multi-functional supercritical extraction system of Announcement No. I639459); however, due to the intermittent pressurization method, it will cause the extractant and The compact fluid extract forms a pulse pressure. When the pressure is reduced, it may cause the extract to produce crystalline particles before spraying out, and block the conveying pipe, making it impossible to spray out the extractant and compact fluid extract. For crystallization and granulation operations, the operation is not smooth and the pipeline is easily blocked and damaged.

The purpose of the present invention is to improve the above shortcomings, so as to provide a constant pressure crystallization granulation system for solid-gas separation at a constant pressure to output the required solid extract.

To achieve the above objectives, the constant pressure crystallization granulation system for compact fluid extracts of the present invention includes a compression cylinder, a crystallization and granulation collection tank, and an amorphous extract collection tank; wherein:

The compression cylinder is connected to the output end of the extraction tank of the extraction system by a conveying pipe, and an inlet control valve is provided on the conveying pipe. The compression cylinder can provide the extractant and compact fluid in the extraction tank of the extraction system Extraction input, the compression cylinder is provided with a pressure maintaining piston, the pressure maintaining piston is connected with a driving device, so that the driving device can drive the pressure maintaining piston to move in the compression cylinder;

The crystal granulation collecting tank is connected with the outlet end of the compression cylinder by a compression conveying pipe. The compression conveying pipe is provided with a back pressure control valve. The crystal granulating collecting tank is also provided with a nozzle. Compress the end connection of the delivery pipe;

The non-crystalline extract collection tank is connected to the compression cylinder through a recovery pipe, and a recovery control valve is provided on the recovery pipe;

In this way, a constant pressure crystallization and granulation system for solid-gas separation at a constant pressure to output the required solid extract is provided.

Regarding the technical means and structure used by the present invention to achieve the purpose, I would like to cooperate with the embodiments shown in Figs.

As shown in Figure 1, the constant pressure crystallization and granulation system for compact fluid extracts in the embodiment includes a compression cylinder 10, a crystallization and granulation collection tank 20, and an amorphous extract collection tank 30; among them:

The compression cylinder 10 (please also refer to Figure 2) is connected to the output end of the extraction tank 40 of the extraction system through a delivery pipe 11, and an inlet control valve 12 is provided on the delivery pipe 11. The compression cylinder 10 is It can provide the extractant and the compact fluid extract input in the extraction tank 40 of the extraction system. The compression cylinder 10 is provided with a pressure maintaining piston 13 which is connected to a driving device 14 so that the driving device 14 can The driving pressure maintains the piston 13 to move in the compression cylinder 10.

The crystal granulation collection tank 20 (see also Figure 2) is connected to the outlet end of the compression cylinder 10 through a compression delivery pipe 21. The compression delivery pipe 21 is also provided with a back pressure control valve 22. A nozzle 23 is also provided in the granulation collection tank 20, and the nozzle 23 is connected to the end of the compression conveying pipe 21.

The non-crystalline extract collection tank 30 (please also refer to FIG. 2) is connected to the compression cylinder 10 through a recovery pipe 31, and a recovery control valve 32 is provided on the recovery pipe 31.

With the above structure, the output pressure of the control compression cylinder 10 and the setting pressure of the back pressure control valve 22 are adjusted according to the crystallization pressure of the required extract, the inlet control valve 12 of the conveying pipe 11 is opened, and the crystal granulation collection tank 20 is closed. The back pressure control valve 22 and the recovery control valve 32 of the non-crystalline extract collection tank 30 enable the extraction tank 40 of the extraction system to input the extractant and the compact fluid extract into the compression cylinder 10, and then close the inlet of the delivery pipe 11 The control valve 12 and the driving device 14 drive the pressure-maintaining piston 13 to compress the extractant and the compact fluid extract, and maintain the extractant and compact fluid extract in the compression cylinder 10 at a constant crystallization pressure, and then turn on the crystallization The back pressure control valve 22 of the granulation collection tank 20. When the pressure in the compression cylinder 10 is greater than the set pressure of the back pressure control valve 22, the compact fluid extract in the compression cylinder 10 can be fed into the crystallization by the compression tube 21 and the nozzle 23 In the granulation collection tank 20, at this time, the compact fluid extract can be decompressed at a high speed by the equal pressure injection of the nozzle 23, and the crystalline particles of the extract can be obtained; at the same time, the driving device 14 drives the pressure to maintain the piston 13 to continuously compress The extractant and the compact fluid extract in the compression cylinder 10 keep the pressure of the compression cylinder 10 constant without pressure drop, and the compact fluid extract in the compression cylinder 10 can continue to pass through the compression tube 21 , The nozzle 23 sprays the crystal particles into the crystal granulation collecting tank 20 for effective solid-gas separation to output the required solid extract.

After the compact fluid extract required in the compression cylinder 10 has been output from the compression tube 21, and the collection of the extract in the crystallization and granulation collection tank 20 is completed, close the back pressure control valve 23 of the compression tube 21 and open the non-crystalline The recovery control valve 32 in the recovery pipe 31 of the extract collection tank 30 allows the extractant and other undesired substances in the compression cylinder 10 to be discharged from the recovery pipe 31 to the non-crystalline extract collection tank 30 , The extraction tank 40 of the extraction system can again input the extractant and the compact fluid extract into the compression cylinder 10 to perform the crystallization and granulation operation of the extract again to achieve solid-gas separation to output the required solid extract.

Therefore, it can be seen from the above that because the present invention uses the pressure of the compression cylinder 10 to maintain the piston 13 and the drive device 14 to continuously compress the extractant and the compact fluid extract therein, the extractant in the compression cylinder 10 The compact fluid extract maintains a constant pressure state, and there will be no pressure drop. Therefore, the present invention clearly can avoid the compression cylinder 10 and the compression pipeline 21 from crystallization caused by the pressure drop of the compact fluid extract, causing blockage. The situation occurs, and the compact fluid extract can be effectively sprayed out through the nozzle 23 to solidify, crystallize and granulate; in addition, the present invention can be applied to compact fluid and supercritical fluid extraction crystal granulation as well as The general extraction (such as: steam extraction) technology of crystallization and granulation can actually improve the application range of the present invention.

Therefore, compared with the prior art, the present invention is indeed significantly advanced, and its structure is indeed unprecedented, and since it has met the requirements of an invention patent, I filed a patent application in accordance with the law and prayed for the patent. .

However, the foregoing is only a feasible embodiment of the present invention. The embodiment is mainly used to illustrate the technical means and structure used by the present invention to achieve the purpose, so it cannot limit the protection scope of the present invention. Any equivalent changes or modifications made according to the specification of the present invention and the scope of the patent application shall still fall within the scope of protection covered by the present invention.

10: Compression cylinder 11: Conveying pipe 12: Inlet control valve 13: Pressure maintaining piston 14: drive device 20: Crystal granulation collection tank 21: Compressed delivery pipe 22: Back pressure control valve 23: Nozzle 30: Amorphous extract collection tank 31: Recovery tube 32: Recovery control valve 40: Extraction tank of extraction system

[Figure 1] is a diagram of the system device of the present invention. [Figure 2] is a diagram of the system device of the present invention, and a schematic diagram of the compact fluid extract in the extraction tank of the extraction system being fed into the compression cylinder. [Fig. 3] is a diagram of the system device of the present invention, and a schematic diagram of the compact fluid extract being compressed by the compression cylinder to be input into the crystal granulation collection tank and sprayed out by a nozzle. [Figure 4] is a diagram of the system device of the present invention, and a schematic diagram of the residual extractant and other undesired substances in the compression cylinder that can be fed into the non-crystalline extract collection tank.

10: Compression cylinder

11: Conveying pipe

12: Inlet control valve

13: Pressure maintaining piston

14: drive device

20: Crystal granulation collection tank

21: Compressed delivery pipe

22: Back pressure control valve

23: Nozzle

30: Amorphous extract collection tank

31: Recovery tube

32: Recovery control valve

40: Extraction tank of extraction system

Claims (1)

A constant pressure crystallization granulation system for compact fluid extracts, comprising a compression cylinder, a crystallization granulation collection tank, and an amorphous extract collection tank; wherein: The compression cylinder is connected to the output end of the extraction tank of the extraction system by a conveying pipe, and an inlet control valve is provided on the conveying pipe. The compression cylinder can provide the extractant and compact fluid in the extraction tank of the extraction system Extraction input, the compression cylinder is provided with a pressure maintaining piston, the pressure maintaining piston is connected with a driving device, so that the driving device can drive the pressure maintaining piston to move in the compression cylinder; The crystal granulation collecting tank is connected with the outlet end of the compression cylinder by a compression conveying pipe. The compression conveying pipe is provided with a back pressure control valve. The crystal granulating collecting tank is also provided with a nozzle. Compress the end connection of the delivery pipe; The non-crystalline extract collection tank is connected to the compression cylinder through a recovery pipe, and a recovery control valve is provided on the recovery pipe.

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