CN111013192A - Supercritical carbon dioxide extraction method for pharmacy - Google Patents
Supercritical carbon dioxide extraction method for pharmacy Download PDFInfo
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- CN111013192A CN111013192A CN201911406586.0A CN201911406586A CN111013192A CN 111013192 A CN111013192 A CN 111013192A CN 201911406586 A CN201911406586 A CN 201911406586A CN 111013192 A CN111013192 A CN 111013192A
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- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0403—Solvent extraction of solutions which are liquid with a supercritical fluid
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Abstract
The invention discloses a supercritical extraction method of carbon dioxide for pharmacy, belonging to the field of pharmaceutical equipment, and the supercritical extraction method of carbon dioxide for pharmacy comprises an extraction tank, a carbon dioxide storage tank, a medicine storage tank, a pressurizer and a separation tank, and comprises the following steps: s1, the carbon dioxide storage tank sends the carbon dioxide into the extraction tank, the medicine storage tank sends the medicine liquid into the extraction tank, it can realize the recovery of the gaseous carbon dioxide under normal temperature and pressure, simplify the extraction process and the equipment composition, reduce the cost, and use the medicine liquid to the first shell to spray, accelerate the mixing speed with the supercritical carbon dioxide, improve the extraction efficiency, and also set up the wing panel in the separation tank to beat the mixture that falls, so that the gas-liquid separation is thoroughly separated, at the same time, use the reciprocating mechanism to drive the two wing panels to beat back and forth, so as to improve the beating effect.
Description
Technical Field
The invention relates to the field of pharmaceutical equipment, in particular to a supercritical carbon dioxide extraction method for pharmacy.
Background
The principle of the supercritical carbon dioxide extraction separation process is that the supercritical carbon dioxide has a special dissolving effect on certain special natural products, and the relation between the dissolving capacity and the density of the supercritical carbon dioxide, namely the influence of pressure and temperature on the dissolving capacity of the supercritical carbon dioxide is utilized to carry out the supercritical carbon dioxide extraction separation process. In the supercritical state, supercritical carbon dioxide is contacted with the substance to be separated to selectively extract the components with different polarity, boiling point and molecular weight in turn, of course, the extract obtained corresponding to each pressure range cannot be single, but the conditions can be controlled to obtain the mixed components with the optimal proportion, then the supercritical fluid is changed into common gas by the methods of decompression and temperature rise, and the extracted substance is completely or basically separated out, thereby achieving the purpose of separation and purification.
The medicine is extracted to the generally adopted supercritical carbon dioxide in pharmacy process, nevertheless extract the in-process at present and still carry out the recovery of liquid state to carbon dioxide, this just causes equipment to form comparatively complicatedly, the operation degree of difficulty increases, the cost has also improved, and extraction jar in the device is mostly still let supercritical carbon dioxide and medicine mix naturally, the time of extraction like this is longer, influence production efficiency, a knockout drum structure for separating the extract is also comparatively simple in addition, the pipe that mainly utilizes crooked setting carries out the gas, liquid separation, the separation is thorough inadequately, the process is comparatively slow.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a carbon dioxide supercritical extraction method for pharmacy, which can realize the recovery of gaseous carbon dioxide at normal temperature and normal pressure, simplify the extraction flow and equipment composition, reduce the cost, accelerate the mixing speed of the liquid medicine and the supercritical carbon dioxide by spraying the liquid medicine to a first shell, improve the extraction efficiency, and also arrange wing plates in a separation tank to beat the fallen mixture so as to completely separate gas from liquid, and simultaneously drive two wing plates to stir back and forth by a reciprocating mechanism so as to improve the beating effect.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A supercritical carbon dioxide extraction method for pharmacy comprises an extraction tank, a carbon dioxide storage tank, a medicine storage tank, a pressurizer and a separation tank, and comprises the following steps:
s1, the carbon dioxide storage tank sends carbon dioxide into the extraction tank, and the medicine storage tank sends medicine liquid into the extraction tank;
s2, pressurizing the extraction tank by a pressurizer, and enabling carbon dioxide in the extraction tank to reach a supercritical state by matching with a temperature control device of the extraction tank, wherein the supercritical carbon dioxide is used for extracting the liquid medicine;
and S3, the mixed solution after extraction enters a separation tank at normal temperature and normal pressure, carbon dioxide is gas under normal temperature and normal pressure and is easy to separate from the liquid medicine, and the carbon dioxide in a gas state is collected and returned to a carbon dioxide storage tank again to realize recycling.
Further, a carbon dioxide injection pump is arranged between the carbon dioxide storage tank and the extraction tank, an air pump is arranged between the carbon dioxide storage tank and the separation tank, the carbon dioxide injection pump accelerates the injection speed, and the air pump accelerates the recovery speed.
Further, the inner wall of the upper end of the extraction tank is fixedly connected with a plurality of first fixing plates, the side wall of each first fixing plate is provided with a motor, the output end of the motor is connected with a gear, the side wall of each first fixing plate is provided with a first chute, a sliding plate is connected in the first chute in a sliding manner, the side wall of one side of the upper end of the sliding plate is fixedly connected with a rack meshed with the gear, the lower end of each first fixing plate is fixedly connected with a bottom plate, the upper end of the bottom plate is fixedly connected with two air springs, the lower end of the sliding plate is fixedly connected with a vertically arranged hanger rod, the hanger rod is arranged between the two air springs, the hanger rod penetrates through the bottom plate, the lower end of the hanger rod is fixedly connected with a first shell, the upper end of the first shell is provided with an opening, the side wall of the first shell is provided with a plurality of first, when the liquid medicine moves upwards, the liquid medicine is sprinkled down from the first leakage holes to form a trickle, so that the mixing with the supercritical carbon dioxide is accelerated, and the extraction efficiency is improved.
Furthermore, the opening includes two arc openings, and two arc openings are located the both sides setting of jib respectively, and inside the liquid medicine enters into first casing by two arc openings.
Furthermore, the arc length occupied by the teeth of the gear is half of the circumference of the gear, the first shell moves upwards when the teeth on the gear are meshed with the rack, the first shell falls when the teeth are separated from the rack, and the first shell reciprocates up and down along with the continuous rotation of the gear.
Furthermore, a liquid inlet pipe is communicated with the separation tank, a separation pipe is communicated with the liquid inlet pipe, the lower end of the separation pipe is communicated with a second shell, and the side wall of the lower end of the second shell is provided with a plurality of second leak holes, the inner wall of the lower end of the separation tank is fixedly connected with a second fixing plate, the lower end of the second fixing plate is provided with a motor, the output end of the motor is connected with a turntable, the side wall of the second fixing plate is provided with a second chute, and a push block is connected in the second sliding groove in a sliding way, the side wall of the second fixed plate is rotationally connected with two wing plates which are symmetrically arranged, and the two wing plates are arranged in the push block, a connecting rod is rotatably connected between the rotary disc and the push block, the connecting rod drives the push block to reciprocate by the rotation of the rotary disc, and the push block pushes the two wing plates back and forth, so that the two wing plates are incited like wings, and the mixture is beaten.
Furthermore, the push block comprises a push plate and two clamping blocks, the two clamping blocks are symmetrically arranged, the distance between the two clamping blocks is larger than the thickness of the wing plate, the wing plate is positioned between the two clamping blocks, and the clamping blocks push the wing plate to move back and forth.
Furthermore, the separating tube is wavy, a plurality of groups of shifting plates are fixedly connected to the inner wall of the separating tube, two shifting plates in each group are arranged oppositely, the shifting plates enable mixtures to be splashed and dispersed, and the separating effect is improved.
Furthermore, the inner wall of the lower end of the first shell is obliquely arranged and is inclined towards two sides, and the inclined bottom wall is convenient for the mixture to fall.
Furthermore, the outer cover of motor is equipped with the safety cover, and the surface coating of safety cover has anticorrosive material, and the safety cover protects the motor not corroded by the liquid medicine.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can realize the recovery of gaseous carbon dioxide under normal atmospheric temperature and pressure, simplifies extraction flow and equipment composition, reduce cost to the utilization is toward first casing spills liquid medicine for its mixing velocity with supercritical carbon dioxide improves the efficiency of extraction, still sets up the pterygoid lamina in addition in the knockout drum and beats the mixture that falls, so that gas-liquid separation thoroughly separates, utilizes reciprocating mechanism to drive two pterygoid laminas simultaneously and incites back to forth, beats the effect with the improvement.
(2) A carbon dioxide injection pump is arranged between the carbon dioxide storage tank and the extraction tank, an air pump is arranged between the carbon dioxide storage tank and the separation tank, the carbon dioxide injection pump accelerates the injection speed, and the air pump accelerates the recovery speed.
(3) The inner wall of the upper end of the extraction tank is fixedly connected with a plurality of first fixing plates, the side wall of each first fixing plate is provided with a motor, the output end of the motor is connected with a gear, the side wall of each first fixing plate is provided with a first chute, a sliding plate is connected in the first chute in a sliding manner, the side wall of one side of the upper end of the sliding plate is fixedly connected with a rack meshed with the gear, the lower end of each first fixing plate is fixedly connected with a bottom plate, the upper end of the bottom plate is fixedly connected with two air springs, the lower end of the sliding plate is fixedly connected with a vertically arranged suspender, the suspender is positioned between the two air springs and penetrates through the bottom plate, the lower end of the suspender is fixedly connected with a first shell, the upper end of the first shell is provided with an opening, the side wall of the first shell is provided with a plurality of first leakage holes, when the first shell moves downwards, the, thus, the shell accelerates the mixing with the supercritical carbon dioxide, and the extraction efficiency is improved.
(4) The opening includes two arc openings, and two arc openings are located the both sides setting of jib respectively, and inside the liquid medicine enters into first casing by two arc openings.
(5) The arc length of the teeth of the gear is half of the circumference of the gear, the first shell moves upwards when the teeth on the gear are meshed with the rack, the first shell falls when the teeth are separated from the rack, and the first shell reciprocates up and down along with the continuous rotation of the gear.
(6) The feed liquor pipe is communicated with the separating tank, the separating pipe is communicated with the feed liquor pipe, the lower end of the separating pipe is communicated with the second shell, a plurality of second leakage holes are formed in the side wall of the lower end of the second shell, a second fixing plate is fixedly connected to the inner wall of the lower end of the separating tank, a motor is installed at the lower end of the second fixing plate, the output end of the motor is connected with a rotary table, a second sliding groove is formed in the side wall of the second fixing plate, a push block is connected to the second sliding groove in a sliding mode, two wing plates which are symmetrically arranged are connected to the side wall of the second fixing plate in a rotating mode, the two wing plates are located in the push block and arranged, a connecting rod is connected between the rotary table and the push block in a rotating mode, the connecting rod drives the push block to do reciprocating motion, the push block pushes the two.
(7) The push block comprises a push plate and two clamping blocks, the two clamping blocks are symmetrically arranged, the distance between the two clamping blocks is larger than the thickness of the wing plate, the wing plate is positioned between the two clamping blocks, and the clamping blocks push the wing plate back and forth to incite.
(8) The shape of separator tube is the wave, and the inner wall fixedly connected with multiunit of separator tube dials the board, and every two boards of group set up relatively, dials the board and makes mixture splash and scatter, improves the effect of separation.
(9) The inner wall of the lower end of the first shell is obliquely arranged and is inclined towards two sides, and the inclined bottom wall is convenient for the mixture to fall.
(10) The outer cover of motor is equipped with the safety cover, and the surface coating of safety cover has anticorrosive material, and the safety cover protects the motor not corroded by the liquid medicine.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of an extraction tank of the present invention;
FIG. 3 is a schematic cross-sectional view of the separator tank of the present invention;
FIG. 4 is a perspective view of a first housing according to the present invention;
FIG. 5 is a schematic view of the structure at A in FIG. 3;
fig. 6 is a schematic front view of the push block of the present invention.
The reference numbers in the figures illustrate:
1 extraction tank, 2 carbon dioxide storage tank, 3 medicine storage tank, 4 pressurizer, 5 separating tank, 6 first fixing plate, 7 gear, 8 first chute, 9 slide plate, 10 bottom plate, 11 air spring, 12 suspender, 13 first shell, 14 opening, 15 first leak hole, 16 liquid inlet pipe, 17 separating pipe, 18 dial plate, 19 second shell, 20 second leak hole, 21 second fixing plate, 22 second chute, 23 push block, 2301 push plate, 2301 clamp block, 24 wing plate, 25 turntable, 26 connecting rod, 27 rack, 28 carbon dioxide injection pump, 29 air extractor.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may 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 in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-6, a supercritical carbon dioxide extraction method for pharmaceutical use, comprising an extraction tank 1, a carbon dioxide storage tank 2, a drug storage tank 3, a pressurizer 4 and a separation tank 5, comprises the following steps:
s1, the carbon dioxide storage tank 2 sends carbon dioxide into the extraction tank 1, and the medicine storage tank 3 sends medicine liquid into the extraction tank 1;
s2, pressurizing the extraction tank 1 by the pressurizer 4, and enabling carbon dioxide in the extraction tank 1 to reach a supercritical state by matching with a temperature control device of the extraction tank 1, wherein the supercritical carbon dioxide extracts the liquid medicine;
and S3, the mixed solution after extraction enters a separation tank 5 at normal temperature and normal pressure, carbon dioxide is gas under normal temperature and normal pressure and is easy to separate from the liquid medicine, and the carbon dioxide in a gas state is collected and returned to the carbon dioxide storage tank 2 again to realize recycling.
A carbon dioxide injection pump 28 is arranged between the carbon dioxide storage tank 2 and the extraction tank 1, an air extractor 29 is arranged between the carbon dioxide storage tank 2 and the separation tank 5, the carbon dioxide injection pump 28 accelerates the injection speed, and the air extractor 29 accelerates the recovery speed;
the inner wall of the upper end of the extraction tank 1 is fixedly connected with a plurality of first fixing plates 6, the side wall of each first fixing plate 6 is provided with a motor (the internal structure of the motor and the working principle thereof are well known by those skilled in the art, and not described herein too much), the outer part of the motor is covered with a protective cover, the outer surface of the protective cover is coated with an anti-corrosion material, the protective cover protects the motor from being corroded by liquid medicine, the output end of the motor is connected with a gear 7, the arc length occupied by the teeth of the gear 7 is half of the circumference of the gear 7, when the teeth on the gear 7 are meshed with a rack 27, the first shell 13 moves upwards, when the teeth are separated by the rack 27, the first shell 13 falls down, along with the continuous rotation of the gear 7, the first shell 13 reciprocates up and down, the side wall of each first fixing plate 6 is provided with a first chute 8, and the first chute 8 is slidably connected with a sliding plate, the lower end of each first fixing plate 6 is fixedly connected with a bottom plate 10, the upper end of the bottom plate 10 is fixedly connected with two air springs 11, the lower end of the sliding plate 9 is fixedly connected with a vertically arranged suspender 12, the suspender 12 is arranged between the two air springs 11, the suspender 12 penetrates through the bottom plate 10, the lower end of the suspender 12 is fixedly connected with a first shell 13, the inner wall of the lower end of the first shell 13 is obliquely arranged and inclines towards two sides, the oblique bottom wall is convenient for falling of the mixture, the upper end of the first shell 13 is provided with an opening 14, the opening 14 comprises two arc-shaped openings, the two arc-shaped openings are respectively arranged at two sides of the suspender 12, the liquid medicine enters the first shell 13 from the two arc-shaped openings, the side wall of the first shell 13 is provided with a plurality of first leakage holes 15, the liquid medicine is scooped up when the first shell 13 moves downwards, and the liquid medicine is splashed down from the first, thus accelerating the mixing with the supercritical carbon dioxide and improving the extraction efficiency;
a liquid inlet pipe 16 is communicated with the separation tank 5, a separation pipe 17 is communicated with the liquid inlet pipe 16, the separation pipe 17 is in a wave shape, a plurality of groups of shifting plates 18 are fixedly connected to the inner wall of the separation pipe 17, two shifting plates 18 in each group are oppositely arranged, the shifting plates 18 enable mixtures to be spread, the separation effect is improved, the lower end of the separation pipe 17 is communicated with a second shell 19, a plurality of second leakage holes 20 are formed in the side wall of the lower end of the second shell 19, a second fixing plate 21 is fixedly connected to the inner wall of the lower end of the separation tank 5, a motor is mounted at the lower end of the second fixing plate 21, the output end of the motor is connected with a rotary disc 25, a second sliding groove 22 is formed in the side wall of the second fixing plate 21, a push block 23 is slidably connected in the second sliding groove 22, the push block 23 comprises a push plate 2301 and two clamping blocks 2302 which are symmetrically arranged, and the distance between the two clamping, the wing plate 24 is arranged between the two clamping blocks 2302, the clamping blocks 2302 push the wing plates 24 back and forth to incite, the side wall of the second fixing plate 21 is rotatably connected with the two symmetrically arranged wing plates 24, the two wing plates 24 are arranged in the push block 23, the connecting rod 26 is rotatably connected between the rotary disc 25 and the push block 23, the connecting rod 26 is driven by the rotation of the rotary disc 25 to reciprocate the push block 23, the push block 23 pushes the two wing plates 24 back and forth, and therefore the two wing plates 24 incite like wings to realize the beating of the mixture.
When the extraction tank 1 of the device works, the motor drives the gear 7 to rotate, the first shell 13 moves upwards when teeth on the gear 7 are meshed with the rack 27, the first shell 13 falls down when the teeth are separated by the rack 27, the first shell 13 reciprocates up and down along with the continuous rotation of the gear 7, the first shell 13 scoops up liquid medicine when moving downwards, the liquid medicine is sprinkled down by the first leakage holes 15 to form fine flow when moving upwards, so that the mixing with supercritical carbon dioxide is accelerated, the extraction efficiency is improved, the air spring 11 plays a buffer role on the mounting plate 9 to avoid overlarge noise, the motor drives the rotating disc 25 to rotate when the separation tank 5 works, the rotation of the disc 25 enables the connecting rod 26 to drive the pushing block 23 to reciprocate, the pushing block 23 pushes the two wing plates 24 back and forth, and the two wing plates 24 are enabled to move like wings, and the mixture is hit. The recovery of gaseous carbon dioxide can be realized under normal temperature and pressure, the extraction flow and equipment composition are simplified, the cost is reduced, the medicine liquid is sprayed to the first shell, the mixing speed of the medicine liquid and the supercritical carbon dioxide is accelerated, the extraction efficiency is improved, and wing plates are arranged in the separation tank to beat the fallen mixture, so that the gas-liquid separation is thoroughly separated, and meanwhile, the reciprocating mechanism is utilized to drive the two wing plates to stir back and forth, so that the beating effect is improved.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. The supercritical carbon dioxide extraction method for pharmacy comprises an extraction tank (1), a carbon dioxide storage tank (2), a medicine storage tank (3), a pressurizer (4) and a separation tank (5), and is characterized in that: the method comprises the following steps:
s1, the carbon dioxide storage tank (2) sends carbon dioxide into the extraction tank (1), and the medicine storage tank (3) sends medicine liquid into the extraction tank (1);
s2, pressurizing the extraction tank (1) by a pressurizer (4), and enabling carbon dioxide in the extraction tank (1) to reach a supercritical state by matching with a temperature control device of the extraction tank (1), wherein the supercritical carbon dioxide is used for extracting the liquid medicine;
and S3, the mixed solution after extraction enters a separation tank (5) at normal temperature and normal pressure, carbon dioxide is gas under the conditions of normal temperature and normal pressure and is easy to separate from the liquid medicine, and the carbon dioxide in the gas state is collected and returned to the carbon dioxide storage tank (2) again to realize recycling.
2. The supercritical carbon dioxide extraction process according to claim 1, wherein: a carbon dioxide injection pump (28) is arranged between the carbon dioxide storage tank (2) and the extraction tank (1), and an air extractor (29) is arranged between the carbon dioxide storage tank (2) and the separation tank (5).
3. The supercritical carbon dioxide extraction process according to claim 1, wherein: the upper end inner wall of the extraction tank (1) is fixedly connected with a plurality of first fixing plates (6), each side wall of each first fixing plate (6) is provided with a motor, the output end of each motor is connected with a gear (7), each side wall of each first fixing plate (6) is provided with a first chute (8), each first chute (8) is internally and slidably connected with a sliding plate (9), one side wall of the upper end of each sliding plate (9) is fixedly connected with a rack (27) meshed with the gear (7), each lower end of each first fixing plate (6) is fixedly connected with a bottom plate (10), the upper end of each bottom plate (10) is fixedly connected with two air springs (11), the lower end of each sliding plate (9) is fixedly connected with a vertically arranged suspender (12), each suspender (12) is arranged between the two air springs (11), and each suspender (12) penetrates through the bottom plate (10), and the lower extreme fixedly connected with first casing (13) of jib (12), opening (14) have been seted up to the upper end of first casing (13), and a plurality of first small openings (15) have been seted up to the lateral wall of first casing (13).
4. The supercritical carbon dioxide extraction process according to claim 3, wherein: the opening (14) comprises two arc-shaped openings which are respectively arranged at two sides of the suspender (12).
5. The supercritical carbon dioxide extraction process according to claim 3, wherein: the arc length occupied by the teeth of the gear (7) is half of the circumference length of the gear.
6. The supercritical carbon dioxide extraction process according to claim 1, wherein: a liquid inlet pipe (16) is communicated with the separation tank (5), a separation pipe (17) is communicated with the liquid inlet pipe (16), the lower end of the separation pipe (17) is communicated with a second shell (19), a plurality of second leakage holes (20) are arranged on the side wall of the lower end of the second shell (19), a second fixing plate (21) is fixedly connected with the inner wall of the lower end of the separation tank (5), the lower end of the second fixing plate (21) is provided with a motor, the output end of the motor is connected with a rotating disc (25), a second sliding chute (22) is arranged on the side wall of the second fixing plate (21), a push block (23) is connected in the second sliding chute (22) in a sliding way, the side wall of the second fixing plate (21) is rotationally connected with two wing plates (24) which are symmetrically arranged, and the two wing plates (24) are arranged in the push block (23), and a connecting rod (26) is rotatably connected between the rotary disc (25) and the push block (23).
7. The supercritical carbon dioxide extraction process according to claim 6, wherein: the push block (23) comprises a push plate (2301) and two clamping blocks (2302), the two clamping blocks (2302) are symmetrically arranged, and the distance between the two clamping blocks (2302) is greater than the thickness of the wing plate (24).
8. The supercritical carbon dioxide extraction process according to claim 6, wherein: the shape of separator tube (17) is the wave, the inner wall fixedly connected with multiunit of separator tube (17) is dialled board (18), and every group two dial board (18) and set up relatively.
9. The supercritical carbon dioxide extraction process according to claim 3, wherein: the inner wall of the lower end of the first shell (13) is obliquely arranged and inclines towards two sides.
10. The supercritical carbon dioxide extraction process according to claim 3, wherein: the outside cover of motor is equipped with the safety cover, and the surface coating of safety cover has anticorrosive material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406586.0A CN111013192B (en) | 2019-12-31 | 2019-12-31 | Supercritical carbon dioxide extraction method for pharmacy |
| PCT/CN2020/101532 WO2021135149A1 (en) | 2019-12-31 | 2020-07-13 | Carbon dioxide supercritical extraction method for pharmaceutical use |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911406586.0A CN111013192B (en) | 2019-12-31 | 2019-12-31 | Supercritical carbon dioxide extraction method for pharmacy |
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| CN111013192B CN111013192B (en) | 2021-12-03 |
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| CN113740494B (en) * | 2021-09-06 | 2024-02-02 | 贵港台泥东园环保科技有限公司 | Dangerous waste raw material grinds analogue means for disposal |
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| WO2021135149A1 (en) | 2021-07-08 |
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