CN112999688A - Carbon dioxide extraction equipment based on supercritical extraction technology - Google Patents
Carbon dioxide extraction equipment based on supercritical extraction technology Download PDFInfo
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- CN112999688A CN112999688A CN202110220919.1A CN202110220919A CN112999688A CN 112999688 A CN112999688 A CN 112999688A CN 202110220919 A CN202110220919 A CN 202110220919A CN 112999688 A CN112999688 A CN 112999688A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0203—Solvent extraction of solids with a supercritical fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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Abstract
The invention discloses a carbon dioxide extraction device based on supercritical extraction technology, which belongs to the technical field of carbon dioxide extraction, wherein a condensation column for shunting carbon dioxide gas is arranged in a water-cooling heat exchange tank, a water-cooling conveying pipe connected with a cooling source supply pipe is embedded in a water-cooling cavity at the inner side of the condensation column, the water-cooling conveying pipe is used for leading in and leading out cooling liquid, a plurality of refrigerating bodies are annularly distributed on the outer side wall of the water-cooling conveying pipe, the refrigerating bodies swing in flowing cooling liquid and are fully contacted with the cooling liquid, the water temperature of the cooling liquid is effectively reduced, the refrigerating effect of the water-cooling cavity is further improved, a circulation cavity on the condensation column is communicated with the water-cooling cavity through a heat conductor, carbon dioxide moves upwards in a shunting manner through a plurality of circulation cavities, heat exchange is realized in the flowing process by means of the matching of the heat conductor and the refrigerating bodies, and the uniformity and the sufficiency of carbon, so as to realize the high-efficiency refrigeration and temperature reduction of the carbon dioxide.
Description
Technical Field
The invention relates to the technical field of carbon dioxide extraction, in particular to carbon dioxide extraction equipment based on a supercritical extraction technology.
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. Supercritical carbon dioxide, the most commonly used supercritical fluid, is a non-toxic, inert, and environmentally friendly reaction medium. Since it has an extremely excellent solubility in a supercritical state, and when the pressure is reduced, the solubility can be rapidly reduced and it can be volatilized without harmful solvent residues, it has a great margin in drug extraction.
In the supercritical carbon dioxide extraction process, carbon dioxide is taken as an extracting agent and needs to be cooled to release heat before being used as a pressurizing pump, so that the liquefied carbon dioxide meets the condition of serving as a solvent for use and then is conveyed to an extraction device, and the pressurizing pump can keep smooth operation in the process of pressurizing the carbon dioxide. Generally, the gaseous carbon dioxide is cooled by cooling water in the prior art, the cooling speed is slow, the liquefaction effect is poor, and a small amount of gaseous carbon dioxide still exists in the carbon dioxide introduced into the pressure pump, so that the smooth operation of the pressure pump is not facilitated. How to provide a high-efficiency liquefaction cooling mode for carbon dioxide in supercritical carbon dioxide extraction equipment becomes a problem worthy of solution.
Therefore, a carbon dioxide extraction device based on a supercritical extraction technology is provided for efficiently cooling the extractant before the extractant is subjected to a pressure pump.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide carbon dioxide extraction equipment based on a supercritical extraction technology, a condensation column for shunting carbon dioxide gas is arranged in a water-cooling heat exchange tank, a water-cooling conveying pipe connected with a cooling source supply pipe is embedded in a water-cooling cavity on the inner side of the condensation column, the water-cooling conveying pipe is used for leading in and leading out cooling liquid, a plurality of refrigerating bodies are annularly distributed on the outer side wall of the water-cooling conveying pipe, the refrigerating bodies swing in the flowing cooling liquid and are fully contacted with the cooling liquid, the water temperature of the cooling liquid is effectively reduced, the refrigerating effect of the water-cooling cavity is further improved, a circulating cavity on the condensation column is communicated with the water-cooling cavity through a heat conductor, carbon dioxide moves upwards in a shunting manner through the plurality of circulating cavities, and heat exchange is realized in the flowing process by means of matching of the heat conductor and the refrigerating bodies, the uniformity and the sufficiency of the liquefaction and the temperature reduction of the carbon dioxide are improved, so that the high-efficiency refrigeration and the temperature reduction of the carbon dioxide are realized.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a carbon dioxide extraction equipment based on supercritical fluid extraction technique, includes carbon dioxide storage jar, water-cooling heat exchange tank, extraction jar, force (forcing) pump and extract collecting vessel, the upper and lower end of water-cooling heat exchange tank inlays respectively to be established installs low head and upper cover, low head, upper cover and water-cooling heat exchange tank communicate the setting each other, the bottom of carbon dioxide storage jar is linked together through intake pipe and low head, top one side of upper cover is connected with the force (forcing) pump mutually through the conveyer pipe, the other end of force (forcing) pump is connected with the extraction jar through the forcing pipe, the loading is waited to extract in the extraction jar, the bottom export of extraction jar is connected with the top of extract collecting vessel through the extract extraction pipe, the bottom of extract collecting vessel is equipped with the extract discharge pipe, the inside of water-cooling heat exchange tank is, the utility model discloses a condensation column, including condensation column, water-cooling transport pipe, cooling source supply pipe, the bottom of water-cooling transport pipe runs through the low head and extends outwards, the annular distribution has a plurality of refrigeration bodies on the one end lateral wall that water-cooling transport pipe is located water-cooling chamber inside, the water-cooling chamber has been seted up to the annular on the lateral wall of condensation column, the water-cooling chamber has been seted up to the inboard of condensation column, the inside of water-cooling chamber runs through to be inserted and is equipped with water-cooling transport pipe, the seal cover that the cover was located water-cooling transport pipe lateral wall is all installed to the upper and lower extreme of water-cooling chamber, the top of water-cooling transport pipe runs through the upper.
Further, heating device is all installed to the upper and lower end of extraction jar, top one side of extraction jar is equipped with the extract inlet pipe, the one end of forcing pipe runs through the heating device who is located extraction jar lower extreme and extends to in the extraction jar, all installs heating device in the upper and lower end of extraction jar, and the heating device who is located the below preheats the carbon dioxide of deriving from the force (forcing) pump pressurization to modify carbon dioxide supercritical polarity, the heating device who is located the top is used for heating up extraction jar inside, in order to realize treating extract and carbon dioxide and reach the required temperature of critical extraction.
Furthermore, two the heating device's inside all inlays to establish and installs the heating wire, the heating wire is connected with external industrial control ware, install on the extraction jar and extend to its inside temperature detecting head and pressure detecting head, the outer end wall mounting of extraction jar has the display with temperature detecting head and pressure detecting head telecommunications connection.
Further, water-cooling transport pipe includes the feed liquor pipe of fixed connection and cooling source supply pipe bottom, the bottom of feed liquor pipe extends to water-cooling intracavity and fixedly connected with and holds the trusteeship, the bottom fixedly connected with drain pipe that holds the trusteeship, the drain pipe runs through seal cover and the low head that is located water-cooling heat exchange tank below and extends outwards, last inlet and lower inlet have been seted up respectively to the relative one end of feed liquor pipe and drain pipe.
Further, go up the inlet and lower inlet is located the upper and lower end of water-cooling chamber respectively, install the solenoid valve on the inlet down, it is a plurality of the refrigerator ring shape distributes on the outer wall of host pipe, leading-in coolant liquid in to the water-cooling transport pipe through the cooling source supply pipe, the leading-in to the water-cooling intracavity of last inlet that the coolant liquid passes through feed liquor socle end, treat that the coolant liquid in the water-cooling intracavity floods the top of the refrigerator body after, open the solenoid valve on the inlet down, at this moment, the coolant liquid in the water-cooling intracavity is leading-in to going out the liquid pipe through lower inlet to through the outside discharge of drain pipe, this drain pipe can be directly connected in the cooling source supply pipe, realize the circulation of coolant liquid.
Furthermore, the refrigerating body comprises a water cooling sheet fixedly connected to the outer wall of the bearing pipe, and a plurality of refrigerating capsules are embedded and distributed on the water cooling sheet.
Furthermore, the water-cooling piece is made of flexible heat conducting materials, the refrigeration capsules comprise a selective semipermeable membrane embedded on the water-cooling piece, a refrigerant is filled in the selective semipermeable membrane, the refrigerant is made of saltpeter granules, after a cooling liquid is filled in the water-cooling cavity, the cooling liquid is soaked in the water-cooling piece and a plurality of refrigeration capsules positioned on the water-cooling piece, the water-cooling piece has certain flexibility, so that proper swing can be realized in the flowing cooling liquid, the water-cooling effect is improved, meanwhile, water molecules soak the refrigerant through the selective semipermeable membrane, the refrigerant is cooled when being in water and is frozen locally, so that the temperature in the water-cooling cavity is rapidly and suddenly reduced, low temperature is transferred to the condensation column, carbon dioxide flowing through the flowing cavity is effectively cooled and liquefied, the cooling liquid is directly utilized for cooling by relative ratio, the cooling speed is high, and the plurality of flowing cavities are used for shunting and conveying the carbon dioxide, is beneficial to the uniform temperature reduction of the carbon dioxide.
Furthermore, the heat conductor comprises a plurality of cooling plates positioned on the inner side of the circulation cavity, the plurality of cooling plates are arranged in an inner-outer stacked mode, a plurality of heat conduction rods are inserted between the inner cooling plate and the outer cooling plate, and the inner ends of the heat conduction rods penetrate through the water cooling cavity and are fixedly connected with the heat conduction balls.
Further, heat conduction ball, heat-conduction pole and condensation post, cooling plate all adopt the heat conduction material to make, heat conduction ball and the inside heat conduction chamber of seting up mutual intercommunication of cooling plate, the heat conduction intracavity is filled with heat conduction filler.
Further, be equipped with the mesh on the cooling plate, heat conduction filler is mixed by conduction oil and graphite granule and prepares and forms, and carbon dioxide gas loops through intake pipe, the leading-in to a plurality of circulation intracavity of low head to through circulation chamber outside motion, at the in-process of circulation, with the heat conductor transmission to the water-cooling intracavity that constitutes of its own heat through cooling plate, heat conduction ball and heat conduction pole, reuse flowing coolant liquid to cool down the liquefaction to it, the heat conductor sets up and further improves heat exchange efficiency.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) in the scheme, the condensing column for shunting carbon dioxide gas is arranged in the water-cooling heat exchange tank, the water-cooling conveying pipe connected with the cooling source supply pipe is embedded in the water-cooling cavity at the inner side of the condensing column and is used for leading in and leading out cooling liquid, and a plurality of refrigerating bodies are annularly distributed on the outer side wall of the water-cooling conveying pipe and swing in flowing cooling liquid, fully contacts with the cooling liquid, effectively reduces the water temperature of the cooling liquid, further improves the refrigeration effect of the water cooling cavity, the circulating cavity on the condensing column is communicated with the water cooling cavity through the heat conductor, the carbon dioxide moves upwards in a shunting way through a plurality of circulating cavities, and by means of the matching of the heat conductor and the refrigerating body, realize the heat exchange at the flow in-process, improve homogeneity and the sufficiency to the carbon dioxide liquefaction cooling to realize the high-efficient refrigeration cooling to carbon dioxide.
(2) Heating devices are arranged at the upper end and the lower end of the extraction tank, an extract feeding pipe is arranged at one side of the top end of the extraction tank, one end of a pressurizing pipe penetrates through the heating devices at the lower end of the extraction tank and extends into the extraction tank, heating wires are embedded in the two heating devices and connected with an external industrial controller, a temperature probe and a pressure probe which extend into the extraction tank are arranged on the extraction tank, a display which is in telecommunication connection with the temperature probe and the pressure probe is arranged on the outer end wall of the extraction tank, the upper end and the lower end of the extraction tank are both provided with a heating device, the heating device positioned below preheats the carbon dioxide which is pressurized and led out from the pressurizing pump, the heating device positioned above the extraction tank is used for heating the interior of the extraction tank so as to modify the supercritical polarity of the carbon dioxide, so that the temperature of the extract and the carbon dioxide gas required by the critical extraction can be realized.
(3) The cold transport pipe comprises a liquid inlet pipe fixedly connected with the bottom end of a cooling source supply pipe, the bottom end of the liquid inlet pipe extends into the water-cooling cavity and is fixedly connected with a supporting pipe, the bottom end of the supporting pipe is fixedly connected with a liquid outlet pipe, the liquid outlet pipe penetrates through a sealing sleeve and a lower sealing head which are positioned below the water-cooling heat exchange tank and extends outwards, an upper liquid inlet and a lower liquid inlet are respectively formed in opposite ends of the liquid inlet pipe and the liquid outlet pipe, the upper liquid inlet and the lower liquid inlet are respectively positioned at the upper end and the lower end of the water-cooling cavity, electromagnetic valves are installed on the lower liquid inlet, a plurality of refrigerators are annularly distributed on the outer wall of the supporting pipe, cooling liquid is introduced into the water-cooling transport pipe through the cooling source supply pipe, the cooling liquid is introduced into the water-cooling cavity through the upper liquid inlet at the bottom end of the liquid inlet pipe, after the cooling liquid in the, and the cooling liquid is discharged outwards through a liquid outlet pipe, and the liquid outlet pipe can be directly connected with a cooling source supply pipe to realize the circulation of the cooling liquid.
(4) The refrigerating body comprises a water cooling piece fixedly connected to the outer wall of the bearing pipe, a plurality of refrigerating capsules are embedded and distributed on the water cooling piece, the water cooling piece is made of flexible heat conducting materials and can swing appropriately along with flowing cooling liquid, each refrigerating capsule comprises a selective semipermeable membrane embedded on the water cooling piece, a refrigerant is filled in the selective semipermeable membrane, the refrigerant selects saltpeter granules, after the cooling liquid is filled in the water cooling cavity, the cooling liquid soaks the water cooling piece and the refrigerating capsules positioned on the water cooling piece, due to the fact that the water cooling piece has certain flexibility, appropriate swing can be achieved in the flowing cooling liquid, the water cooling effect is improved, meanwhile, water molecules soak the refrigerant through the selective semipermeable membrane, the refrigerant cools when meeting water, local icing is achieved, the temperature in the water cooling cavity rapidly drops, low temperature is transferred to the condensation column, and carbon dioxide flowing through the flowing cavity is effectively cooled and liquefied, compared with the mode that cooling liquid is directly utilized to cool, the cooling speed is high, and a plurality of circulation cavities are used for shunting and conveying carbon dioxide, so that the carbon dioxide is uniformly cooled.
(5) The heat conductor comprises a plurality of cooling plates positioned on the inner side of the circulation cavity, the cooling plates are arranged in an inner-outer stacking manner, a plurality of heat conduction rods are inserted between the inner cooling plate and the outer cooling plate, the inner ends of the heat conduction rods penetrate through the water cooling cavity and are fixedly connected with heat conduction balls, the heat conduction rods, the condensation columns and the cooling plates are all made of heat conduction materials, the heat conduction cavities which are communicated with each other are formed in the heat conduction balls and the cooling plates, heat conduction fillers are filled in the heat conduction cavities, meshes are arranged on the cooling plates and are prepared by mixing heat conduction oil and graphite granules, carbon dioxide gas is led into the circulation cavities through the air inlet pipe and the lower end enclosure and moves outwards through the circulation cavities, the heat of the carbon dioxide gas is transferred into the water cooling cavity through the heat conductor formed by the cooling plates, the heat conduction balls and the heat conduction rods in the circulation, the arrangement of the heat conductor further improves the heat exchange efficiency.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic illustration of the water cooled heat exchange tank of the present invention in disassembled form;
FIG. 3 is a perspective view of the combination of the condensation column and the water-cooled delivery pipe of the present invention;
FIG. 4 is a perspective view of the present invention with the condensing column and the water-cooled delivery pipe separated;
FIG. 5 is a perspective view of a thermal conductor of the present invention;
fig. 6 is a partial sectional view of the refrigerator body according to the present invention.
The reference numbers in the figures illustrate:
the device comprises a carbon dioxide storage tank 1, a water-cooled heat exchange tank 2, a lower end enclosure 201, an upper end enclosure 202, an extraction tank 3, a pressure pump 4, an extract collecting cylinder 5, an air inlet pipe 6, a delivery pipe 7, a pressure pipe 8, an extract extraction pipe 9, a heating device 10, a cooling source supply pipe 11, a water-cooled delivery pipe 12, a liquid inlet pipe 121, a liquid inlet port 1211, a supporting pipe 122, a liquid outlet pipe 123, a lower liquid inlet port 1231, a water-cooled tablet 13, a refrigeration capsule 14, a selective semipermeable membrane 141, a refrigerant 142, a condensation column 15, a flow cavity 151, a cooling plate 16, a heat conduction ball 17, a heat conduction rod 18 and a sealing sleeve 19.
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. 1-4, a carbon dioxide extraction apparatus based on supercritical extraction technology comprises a carbon dioxide storage tank 1, a water-cooling heat exchange tank 2, an extraction tank 3, a pressure pump 4 and an extract collecting cylinder 5, wherein the upper end and the lower end of the water-cooling heat exchange tank 2 are respectively embedded with a lower end enclosure 201 and an upper end enclosure 202, the lower end enclosure 201, the upper end enclosure 202 and the water-cooling heat exchange tank 2 are communicated with each other, the bottom end of the carbon dioxide storage tank 1 is communicated with the lower end enclosure 201 through an air inlet pipe 6, one side of the top end of the upper end enclosure 202 is connected with the pressure pump 4 through a delivery pipe 7, the other end of the pressure pump 4 is connected with the extraction tank 3 through a pressure pipe 8, the extraction tank 3 is filled with an extract to be extracted, the outlet at the bottom end of the extraction tank 3 is connected with the top end of, the inside of the water-cooling heat exchange tank 2 is embedded with a condensation column 15, the outer side wall of the condensation column 15 is annularly provided with a plurality of circulation cavities 151 communicated with a lower end enclosure 201 and an upper end enclosure 202, the inner side of the condensation column 15 is provided with a water-cooling cavity, the inside of the water-cooling cavity is inserted with a water-cooling transport pipe 12, the upper end and the lower end of the water-cooling cavity are both provided with sealing sleeves 19 sleeved on the outer side wall of the water-cooling transport pipe 12, the top end of the water-cooling transport pipe 12 penetrates through the upper end enclosure 202 and is connected with a cooling source supply pipe 11, cooling liquid is introduced through the cooling source supply pipe 11, the bottom end of the water-cooling transport pipe 12 penetrates through the lower end enclosure 201 and extends outwards, the water-cooling transport pipe 12 comprises a liquid inlet pipe 121 fixedly connected with the bottom end of the cooling source supply pipe 11, the bottom end of the liquid inlet pipe 121 extends into, the liquid outlet pipe 123 penetrates through the sealing sleeve 19 and the lower sealing head 201 which are positioned below the water-cooling heat exchange tank 2 and extends outwards, and an upper liquid inlet 1211 and a lower liquid inlet 1231 are respectively formed at opposite ends of the liquid inlet pipe 121 and the liquid outlet pipe 123.
The upper liquid inlet 1211 and the lower liquid inlet 1231 are respectively located at the upper end and the lower end of the water-cooling cavity, the lower liquid inlet 1231 is provided with an electromagnetic valve, a plurality of refrigerators are annularly distributed on the outer wall of the supporting pipe 122, cooling liquid is introduced into the water-cooling transport pipe 12 through the cooling source supply pipe 11, the cooling liquid is introduced into the water-cooling cavity through the upper liquid inlet 1211 at the bottom end of the liquid inlet pipe 121, after the top of the refrigerator is submerged by the cooling liquid in the water-cooling cavity, the electromagnetic valve on the lower liquid inlet 1231 is opened, at this time, the cooling liquid in the water-cooling cavity is introduced into the liquid outlet pipe 123 through the lower liquid inlet 1231 and is discharged outwards through the liquid outlet pipe 123, and the liquid outlet pipe 123 can be directly connected with the cooling source supply pipe.
Referring to fig. 3-6, a plurality of refrigeration bodies are annularly distributed on a side wall of one end of the water-cooled transport pipe 12 located inside the water-cooled cavity, each refrigeration body includes a water-cooled plate 13 fixedly connected to an outer wall of the support pipe 122, a plurality of refrigeration capsules 14 are embedded and distributed on the water-cooled plate 13, the water-cooled plate 13 is made of a flexible heat-conducting material, each refrigeration capsule 14 includes a selective semipermeable membrane 141 embedded on the water-cooled plate 13, a refrigerant 142 is filled in the selective semipermeable membrane 141, the refrigerant 142 is made of niter granules, when a cooling liquid is filled in the water-cooled cavity, the cooling liquid wets the water-cooled plate 13 and the plurality of refrigeration capsules 14 located on the water-cooled plate 13, because the water-cooled plate 13 has certain flexibility, appropriate swing can be realized in the flowing cooling liquid, the water-cooling effect is improved, meanwhile, water molecules wet the refrigerant 142 through the, and the part freezes, thereby make the quick shock drop of the temperature in the water-cooling intracavity, low temperature transmits to condensation post 15 department, with the effective carbon dioxide that flows through circulation chamber 151 department reduces the temperature liquefaction, the relative ratio directly utilizes the coolant liquid to reduce the temperature, this mode cooling speed is fast, and a plurality of circulation chamber 151 divides the flow transmission to carbon dioxide, do benefit to the even cooling of carbon dioxide, after finishing using, get rid of the coolant liquid through drain pipe 123, appear in the nitre granule refrigeration sachet 14, so that use next time, the technical staff in the field also can choose other refrigeration materials for use in order to assist the cooling of coolant liquid.
The heat conductor is embedded between the water-cooling cavity and the circulation cavities 151 and comprises a plurality of cooling plates 16 positioned on the inner side of the circulation cavities 151, the cooling plates 16 are arranged in an inner-outer stacked mode, a plurality of heat conduction rods 18 are inserted between the inner cooling plate and the outer cooling plate 16, the inner ends of the heat conduction rods 18 penetrate through the water-cooling cavity and are fixedly connected with heat conduction balls 17, the heat conduction rods 18, condensation columns 15 and the cooling plates 16 are all made of heat conduction materials, the heat conduction cavities which are mutually communicated are formed in the heat conduction balls 17 and the cooling plates 16, heat conduction fillers are filled in the heat conduction cavities, meshes are arranged on the cooling plates 16 and are prepared by mixing heat conduction oil and graphite granules, carbon dioxide gas is guided into the circulation cavities 151 through the air inlet pipe 6 in sequence, the lower end enclosure 201 and moves outwards through the circulation cavities 151, and the heat of the carbon dioxide gas is conducted, The heat conductor composed of the heat conducting ball 17 and the heat conducting rod 18 is transferred into the water cooling cavity, and then is cooled and liquefied by flowing cooling liquid, so that the heat exchange efficiency is further improved by the heat conductor.
Referring to fig. 1, the upper and lower ends of the extraction tank 3 are respectively provided with a heating device 10, one side of the top end of the extraction tank 3 is provided with an extract feeding pipe, one end of a pressure pipe 8 penetrates through the heating device 10 at the lower end of the extraction tank 3 and extends into the extraction tank 3, the upper and lower ends of the extraction tank 3 are respectively provided with a heating device 10, the heating device 10 at the lower part preheats carbon dioxide pressurized and led out from a pressure pump 4 to modify the supercritical polarity of the carbon dioxide, the heating device 10 at the upper part is used for heating the interior of the extraction tank 3 to realize the temperature required by the critical extraction of the extract and the carbon dioxide, the two heating devices 10 are respectively provided with an electric heating wire in an embedded manner, the electric heating wires are connected with an external industrial controller, the extraction tank 3 is provided with a temperature detecting head and a pressure detecting head extending into the extraction tank, the outer end wall of the extraction tank 3, the critical temperature in the extraction tank 3 has been precisely controlled.
The condensation column 15 for shunting carbon dioxide gas is arranged in the water-cooling heat exchange tank 2, the water-cooling conveying pipe 12 connected with the cooling source supply pipe 11 is embedded in the water-cooling cavity on the inner side of the condensation column 15, the water-cooling conveying pipe 12 is used for leading in and leading out cooling liquid, a plurality of refrigerating bodies are annularly distributed on the outer side wall of the water-cooling conveying pipe 12, the refrigerating bodies are fully contacted and matched with the cooling liquid, the refrigerating effect of the water-cooling cavity is further improved, the circulation cavity 151 on the condensation column 15 is communicated with the water-cooling cavity through a heat conductor, the carbon dioxide is shunted upwards through the plurality of circulation cavities 151, heat exchange is realized in the flowing process, the full liquefaction of the gas carbon dioxide is completed, and the efficient refrigeration and cooling of the carbon dioxide are realized;
the carbon dioxide after temperature reduction is introduced into the extraction tank 3 through the pressure pump 4, the carbon dioxide is preheated by the heating device 10 positioned below the extraction tank 3 before being introduced into the extraction tank 3, modifying the supercritical polarity of the carbon dioxide, introducing the preheated carbon dioxide into the extraction tank 3, mixing with the substance to be extracted in the extraction tank 3, heating device 10 above the extraction tank 3 is used for heating the interior of the extraction tank 3 by the heating device 10 above the extraction tank 3 to realize that the substance to be extracted and carbon dioxide gas reach the temperature required by critical extraction, after extraction is finished, the extract is introduced into an extract collecting cylinder 5 to be separated from carbon dioxide, a technician can connect a collecting device for mobile phone carbon dioxide at the top end of the extract collecting cylinder 5, and the extracted extract is discharged through an extract discharging pipe at the bottom end of the extract collecting cylinder 5;
it should be added that the air inlet pipe 6, the delivery pipe 7, the pressurization pipe 8, and the extract extraction pipe 9 are all provided with matched control valves, which is the prior art and will not be described herein in detail to realize quantitative input and output.
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 utility model provides a carbon dioxide extraction equipment based on supercritical fluid extraction technique, includes carbon dioxide storage jar (1), water-cooling heat exchange tank (2), extraction jar (3), force (forcing) pump (4) and extract collecting vessel (5), its characterized in that: the device comprises a water-cooling heat exchange tank (2), wherein a lower seal head (201) and an upper seal head (202) are respectively embedded at the upper end and the lower end of the water-cooling heat exchange tank (2), the lower seal head (201), the upper seal head (202) and the water-cooling heat exchange tank (2) are communicated with each other, the bottom end of a carbon dioxide storage tank (1) is communicated with the lower seal head (201) through an air inlet pipe (6), one side of the top end of the upper seal head (202) is connected with a pressure pump (4) through a conveying pipe (7), the other end of the pressure pump (4) is connected with an extraction tank (3) through a pressure pipe (8), an extract to be extracted is loaded in the extraction tank (3), the outlet at the bottom end of the extraction tank (3) is connected with the top end of an extract collection cylinder (5) through an extract extraction pipe (9;
a condensing column (15) is embedded in the water-cooling heat exchange tank (2), a plurality of circulation cavities (151) communicated with the lower end enclosure (201) and the upper end enclosure (202) are annularly arranged on the outer side wall of the condensing column (15), a water-cooling cavity is arranged on the inner side of the condensation column (15), a water-cooling conveying pipe (12) is inserted in the water-cooling cavity in a penetrating way, the upper end and the lower end of the water-cooling cavity are both provided with a sealing sleeve (19) which is sleeved on the outer side wall of the water-cooling conveying pipe (12), the top end of the water-cooling conveying pipe (12) penetrates through the upper end enclosure (202) and is connected with a cooling source supply pipe (11), the bottom end of the water-cooling conveying pipe (12) penetrates through the lower end enclosure (201) and extends outwards, the water-cooling transport pipe (12) is located on the side wall of one end inside the water-cooling cavity, a plurality of refrigerating bodies are distributed on the side wall in the water-cooling cavity in an annular mode, and heat conductors are embedded between the water-cooling cavity and the circulating cavities (151).
2. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 1, characterized by: heating device (10) are all installed to the upper and lower extreme of extraction jar (3), top one side of extraction jar (3) is equipped with the extract inlet pipe, the one end of forcing pipe (8) is run through heating device (10) that are located extraction jar (3) lower extreme and is extended to in extraction jar (3).
3. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 2, characterized by: two the inside of heating device (10) all inlays to establish and installs the heating wire, the heating wire is connected with external industrial control ware, install on extraction jar (3) and extend to its inside temperature detecting head and pressure detecting head, the outer end wall mounting of extraction jar (3) has the display with temperature detecting head and pressure detecting head telecommunications connection.
4. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 1, characterized by: the water-cooling transport pipe (12) comprises a liquid inlet pipe (121) fixedly connected with the bottom end of a cooling source supply pipe (11), the bottom end of the liquid inlet pipe (121) extends into a water-cooling cavity and is fixedly connected with a supporting pipe (122), the bottom end of the supporting pipe (122) is fixedly connected with a liquid outlet pipe (123), the liquid outlet pipe (123) penetrates through a sealing sleeve (19) and a lower sealing head (201) below the water-cooling heat exchange tank (2) and extends outwards, and an upper liquid inlet (1211) and a lower liquid inlet (1231) are respectively formed in the relative ends of the liquid inlet pipe (121) and the liquid outlet pipe (123).
5. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 4, characterized by: the upper liquid inlet (1211) and the lower liquid inlet (1231) are respectively positioned at the upper end and the lower end of the water-cooling cavity, the lower liquid inlet (1231) is provided with an electromagnetic valve, and the plurality of refrigerators are annularly distributed on the outer wall of the supporting pipe (122).
6. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 5, characterized by: the refrigerating body comprises a water cooling sheet (13) fixedly connected to the outer wall of the supporting pipe (122), and a plurality of refrigerating capsules (14) are embedded and distributed on the water cooling sheet (13).
7. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 6, characterized by: the water-cooling tablet (13) is made of flexible heat conducting materials, the refrigeration capsule (14) comprises a selective semipermeable membrane (141) embedded on the water-cooling tablet (13), a refrigerant (142) is filled in the selective semipermeable membrane (141), and the refrigerant (142) is made of saltpeter granules.
8. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 7, characterized by: the heat conductor comprises a plurality of cooling plates (16) positioned on the inner side of the circulation cavity (151), the plurality of cooling plates (16) are arranged in an inner-outer stacked mode, a plurality of heat conduction rods (18) are inserted between the inner cooling plate and the outer cooling plate (16), and the inner ends of the heat conduction rods (18) penetrate through the water cooling cavity and are fixedly connected with heat conduction balls (17).
9. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 8, characterized by: the heat conduction ball (17), the heat conduction rod (18), the condensation column (15) and the cooling plate (16) are all made of heat conduction materials, heat conduction cavities which are communicated with each other are formed in the heat conduction ball (17) and the cooling plate (16), and heat conduction fillers are filled in the heat conduction cavities.
10. A carbon dioxide extraction plant based on supercritical extraction technology as claimed in claim 9, characterized by: the cooling plate (16) is provided with meshes, and the heat-conducting filler is prepared by mixing heat-conducting oil and graphite granules.
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| CN114407225A (en) * | 2021-12-15 | 2022-04-29 | 江苏绿禾新材料有限公司 | Fully-degradable plastic for preparing disposable thin-film gloves and preparation method thereof |
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