CN218774328U - Supercritical extraction device with heat tracing structure - Google Patents
Supercritical extraction device with heat tracing structure Download PDFInfo
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- CN218774328U CN218774328U CN202222800521.8U CN202222800521U CN218774328U CN 218774328 U CN218774328 U CN 218774328U CN 202222800521 U CN202222800521 U CN 202222800521U CN 218774328 U CN218774328 U CN 218774328U
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Abstract
The utility model relates to a supercritical fluid extraction device, concretely relates to supercritical fluid extraction device with heat tracing structure, product quality is uncontrollable, product nature changes and easily blocks up the pipeline when extracting for solving the adiabatic device of using outer heat preservation to realize absolutely cold among the prior art, produce the product nature and change, simultaneously to CO in the separation cauldron 2 Is recycled to produce CO 2 The loss of the steel is large, the production cost is increased, and the health of workers in a workshop can be damaged. The utility model discloses a have heat tracing knotThe supercritical extraction device comprises CO 2 Storage unit, CO 2 A conveying unit, an extraction unit and a separation and recovery unit; the separation and recovery unit comprises a separation heater, a separation kettle and a product collecting tank which are sequentially arranged, and a jacket is sleeved on the raw material pipeline, a communication pipeline between the extraction outlet and the separation heater inlet, a communication pipeline between the separation heater outlet and the separation kettle, and a communication pipeline between the separation kettle and the product collecting tank for controlling the temperature of the pipeline.
Description
Technical Field
The utility model relates to a supercritical fluid extraction device, concretely relates to supercritical fluid extraction device with heat tracing structure.
Background
Supercritical extraction is a process of extracting one or more components of a feedstock with a supercritical fluid, carbon dioxide (CO) 2 ) Is a common supercritical extractant. In the extraction process, a seamless pipe or a stainless steel pipe shown in figure 1 is mostly adopted in a traditional high-pressure material conveying pipe during material conveying, for pipelines with adiabatic demands, an outer heat-insulating layer 02 shown in figure 2 is mostly adopted for realization, and meanwhile, because the stroke of a conveying pipeline 01 is long or the temperature is changed rapidly, the temperature of certain materials can still be changed gradually after the certain materials pass through the outer heat-insulating layer 02, the material properties are changed, the pipeline is seriously blocked or the material flow rate is uneven due to the change of viscosity and pressure drop, and the discharging quality of products is influenced, so that the product quality is difficult to control when the existing device for realizing adiabatic insulation by adopting outer heat-insulating materials extracts the materials, and the pipelines are easy to block; CO in the prior art 2 Usually, the CO enters a system for recycling after being separated in a separation kettle, but in the process, more CO is generated 2 By product emission, CO is formed 2 The loss of the catalyst is large, the production cost is increased, and CO is discharged along with the product 2 The health of the workshop staff is also compromised.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems that the product quality is difficult to control when the prior art uses the outer heat-insulating layer to realize the adiabatic device of the absolute cooling, the product property changes and the pipeline is easy to block, and the CO is simultaneously treated in the separation kettle 2 Is recycled to produce CO 2 Has large loss and increased production cost and can harm the health of workshop staffIt is sufficient to provide a supercritical extraction device with a heat tracing structure.
In order to achieve the above object, the present invention provides the following technical solutions:
a supercritical extraction device with a heat tracing structure is characterized in that: comprising CO 2 Storage unit, CO 2 The device comprises a conveying unit, an extraction unit and a separation and recovery unit; the CO is 2 Storage unit for supplying CO 2 Condensing into liquid and storing, wherein the liquid comprises a cooler and an intermediate storage tank which are sequentially communicated, and the inlet of the cooler is used for communicating with external CO 2 A storage tank; the CO is 2 The transport unit is used for transporting CO 2 The heating device is heated to a supercritical state and comprises a subcooler, a booster pump and an extraction heater which are sequentially communicated with an outlet of the intermediate storage tank; the extraction unit comprises an extraction kettle, and CO is arranged on the extraction kettle 2 An inlet, a raw material inlet, an extraction outlet and CO 2 Recovery of CO 2 The inlet is communicated with the outlet of the extraction heater, and CO is 2 The recycling port is communicated with the inlet of the cooler, and the raw material inlet is communicated with an external raw material storage tank through a raw material pipeline; the separation and recovery unit comprises a separation heater, a separation kettle and a product collecting tank which are sequentially communicated with the extraction outlet; the separation kettle is also provided with CO 2 An outlet for CO to be separated from the product 2 Discharging;
the raw material pipeline, the communicating pipeline of the extraction outlet and the separation heater inlet, the communicating pipeline of the separation heater outlet and the separation kettle, and the communicating pipeline of the separation kettle and the product collecting tank are all sleeved with a jacket, a first inlet and a first outlet are arranged on the jacket, and the first inlet and the first outlet are used for being connected with an external heat source.
Further, a heat exchange coil is arranged in the intermediate storage tank and communicated with an external heat exchange medium for adjusting CO in the intermediate storage tank 2 The temperature of (2).
Further, the separation and recovery unit further comprises CO 2 Storage tank for tail gas, CO 2 The tail gas storage tank is provided with an inlet, an outlet and CO 2 Inlet of tail gas storage tankThe opening is communicated with CO on the extraction kettle 2 Recovery of CO 2 The inlet and the outlet of the tail gas storage tank are communicated with the inlet of the cooler.
Further, CO on the separation kettle 2 The outlet is communicated with the inlet of the cooler or CO through valve control 2 Inlet and outlet of tail gas storage tank for CO 2 Can be recycled.
Furthermore, a liquid level meter and a pressure gauge are further arranged in the intermediate storage tank and used for monitoring the liquid level and the pressure of the intermediate storage tank.
Further, the CO is 2 A heat exchange coil is arranged in the tail gas storage tank, and the heat exchange coil is communicated with an external heat exchange medium and used for adjusting CO 2 CO in tail gas storage tank 2 The temperature of (2).
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses increased on current supercritical fluid extraction device and pressed from both sides the cover as the heat tracing structure, through the raw materials pipeline, the intercommunication pipeline of extraction export and separation heater import, the intercommunication pipeline of separation heater export and separation cauldron, the cover that presss from both sides that sets up on the intercommunication pipeline of separation cauldron and product holding tank, the realization is to the control of pipeline temperature, avoid because temperature change leads to material jam or inequality, influence product quality, intraductal material viscosity increase at low temperature, can increase intraductal pressure drop, increase power consumption, consequently, it has energy-conserving effect to set up the cover and keep warm.
2. The utility model is provided with CO on the extraction kettle 2 A recycling port for recycling most of CO through the inlet communicated with the cooler 2 The CO is recovered and recycled at the position, the outlet pressure of the extraction kettle is reduced, and the CO of the separation kettle is reduced 2 Content of the remaining part of CO 2 CO passing through separation vessel 2 The outlet is discharged or recycled, and CO carried by the product during discharge can be effectively reduced 2 Reduction of CO 2 Loss, low production cost and no CO emission 2 Endangering the health of the workers in the workshop.
3. The utility model is provided with CO 2 Tail gas storage tank, extractCO of the kettle 2 Can be recycled to CO 2 The temporary storage of the tail gas storage tank is beneficial to the CO in the production process 2 The addition amount of the catalyst is controlled to ensure the stable production process, and simultaneously, the CO separated after extraction 2 And the material waste and the influence on the ecological environment are reduced by recycling the pipeline, and the production cost is reduced.
4. The utility model is at CO 2 The heat exchange coil pipes arranged in the tail gas storage tank and the middle storage tank can be used for exchanging CO in the tail gas storage tank and the middle storage tank 2 Temperature is controlled when CO is present 2 When the pressure of the tail gas storage tank and the pressure of the middle storage tank are changed, CO in the tail gas storage tank and the middle storage tank are changed by adjusting the temperature of the heat exchange coil 2 At a temperature of so that CO 2 Keeping liquid state for storage, and avoiding CO generation due to high pressure and low temperature 2 The solid dry ice blocks the pipeline and cannot be discharged, the pipeline condensation completely disappears, the safety factor of the whole set of equipment is improved, and the stability of process parameters is ensured; meanwhile, when the production is stopped and the evacuation is carried out, the equipment and the pipeline can be thoroughly evacuated through the heating of the heat exchange coil and the jacket.
Drawings
FIG. 1 is a schematic illustration of a prior art material transfer pipe;
FIG. 2 is a schematic view of a prior art adiabatic heat-insulating piping structure;
fig. 3 is a process flow diagram of an embodiment of the invention;
FIG. 4 shows CO in an embodiment of the present invention 2 A cross-sectional view of the intermediate reservoir;
FIG. 5 is a schematic view of a communication pipeline between a separation kettle and a product collection tank in the embodiment of the present invention;
FIG. 6 is a schematic diagram of a jacket structure of a pipeline communicating a separation kettle and a product collection tank in the embodiment of the present invention;
description of reference numerals:
01-conveying pipeline, 02-outer insulating layer;
1-extraction kettle, 110-raw material storage tank, 2-separation heater, 3-separation kettle, 4-CO 2 Tail gas storage tank, 5-cooler, 510-CO 2 Input pipeline, 6 intermediate storage tank, 601 heat exchange coil, 7 subcooler, 8 pressurizing pump, 9 extracting heater；
301-product outlet, 310-jacket, 311-first inlet, 312-first outlet, 320-first valve, 330-second valve, 340-third valve, 350-product collection tank.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the supercritical extraction device with heat tracing structure of the utility model is shown in figure 3 and comprises CO 2 Storage unit, CO 2 The device comprises a conveying unit, an extraction unit and a separation and recovery unit; the CO is 2 The storage unit comprises a cooler 5 and an intermediate storage tank 6 which are arranged in sequence, wherein the inlet of the cooler 5 is filled with CO 2 The input pipe 510 is connected to the external CO 2 Storage tank for CO 2 Cooling, condensing the liquid into liquid and storing the liquid in an intermediate storage tank 6; said CO 2 The conveying unit comprises a subcooler 7, a booster pump 8 and an extraction heater 9 which are arranged at the outlet of the intermediate storage tank 6 in sequence 2 After the temperature is reduced by the subcooler 7 to ensure that the liquid is in a liquid state, the pressure is increased by the booster pump 8, and then the CO is heated by the extraction heater 9 to ensure that the CO is in a liquid state 2 To be in a supercritical state; the extraction unit comprises an extraction kettle 1, and CO is arranged on the extraction kettle 1 2 An inlet, a raw material inlet, an extraction outlet and CO 2 Recovery of CO 2 The inlet is communicated with the outlet of the extraction heater 9, and the raw material inlet is communicated with an external raw material storage tank 110 through a raw material pipeline; the separation and recovery unit comprises a separation heater 2, a separation kettle 3, a product collecting tank 350 and a communicated CO, wherein the extraction outlet is sequentially arranged 2 CO of the recycling port 2 A tail gas storage tank 4; said CO 2 The tail gas storage tank 4 is provided with an inlet and an outlet, and the inlet is communicated with CO 2 The inlet and the outlet of the recovery port are communicated with the inlet of the cooler 5; the separation kettle 3 is provided with an inlet, a product outlet 301 and CO 2 The outlet, the inlet of the separation kettle 3 is communicated with the outlet of the separation heater 2, the product outlet 301 is communicated with the product collecting tank 350 2 The outlet is communicated with the inlet of the cooler 5 or CO through valve regulation 2 An inlet and an outlet of the tail gas storage tank 4.
The raw material pipeline, the communication pipeline between the extraction outlet and the inlet of the separation heater 2, the communication pipeline between the outlet of the separation heater 2 and the separation kettle 3, and the communication pipeline between the outlet of the separation heater 2 and the product collection tank 350 are all provided with a jacket 310, as shown in fig. 5 and 6, the communication pipeline between the separation kettle 3 and the product collection tank 350 is provided, the jacket 310 is sleeved outside the pipeline, the jacket 310 is provided with a first inlet 311 and a first outlet 312 for connecting an external heat source, the first inlet 311 and the first outlet 312 are respectively provided with a second valve 330 and a first valve 320, when the product outlet 301 of the separation kettle 3 is ready to discharge, the second valve 330 is firstly opened, then the first valve 320 is opened, so that hot water is filled in the jacket 310, the pipeline is ensured to be warm, the easily solidified paste material is in a flowing state, and the third valve 340 is opened to discharge the material. The jacket 310 can adopt hot water as a heat preservation medium, so that the steam consumption is reduced, and a certain energy-saving effect is achieved.
Meanwhile, the intermediate storage tank 6 is provided with a liquid level meter and a pressure meter which are arranged in the intermediate storage tank 6 and used for monitoring the liquid level and the pressure of the intermediate storage tank 6 and controlling CO according to the liquid level and the pressure 2 Adding the components.
In the present embodiment, the intermediate tank 6 and CO 2 The tail gas storage tank 4 is internally provided with a heat exchange coil 601 for centering the intermediate storage tank 6 and the CO 2 Adjusting the temperature in the tail gas storage tank 4; as shown in fig. 4, which is a schematic structural diagram of the intermediate storage tank 6 and the heat exchange coil 601 thereof, the heat exchange coil 601 is disposed at the lower portion of the tank body, and the inlet and the outlet of the heat exchange coil are respectively connected to external heat exchange media, so as to form a circulating heat exchange and prevent CO 2 Converting into solid dry ice under high pressure and low temperature, blocking the pipeline according to the intermediate storage tank 6 and CO 2 The pressure of the tail gas storage tank 4 is respectively adjusted to the temperature of the corresponding heat exchange coil 601. In other embodiments of the present invention, the intermediate storage tank 6 and CO 2 The tail gas storage tank 4 can also be provided with no heat exchange coil 601, or an intermediate storage tank 6 or CO 2 A heat exchange coil 601 is arranged in one of the tail gas storage tanks 4.
The principle of the utility model is specifically that: CO 2 2 Condensed into liquid by a cooler 5 and stored in an intermediate storage tank 6, and CO is ensured by a subcooler 7 2 In liquid form, CO 2 Pressurizing with pressurizing pump 8, heating with extraction heater 9 to obtain supercritical state, supercritical CO 2 The raw materials are extracted in an extraction kettle 1, and after the extraction is finished, CO is added 2 The recycling port can recycle most of CO 2 Recovery to CO 2 The tail gas recovery tank, the extracted mixed material enters the separation heater 2 through the extraction outlet to be heated, so that the residual CO is generated 2 Becomes gaseous and is separated from the product in a separation vessel 3, CO 2 And the product is passed over CO separately 2 Outlet and product outlet 301, CO discharged 2 Can enter CO through a circulating pipeline 2 In storage units, or into CO 2 Temporarily storing the tail gas in a tail gas storage tank 4; when CO is required in the system 2 When passing through external CO 2 Storage tanks or by CO 2 And a tail gas storage tank 4.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a supercritical fluid extraction device with companion's thermal structure, includes the trunk line, its characterized in that:
comprising CO 2 Storage unit, CO 2 The device comprises a conveying unit, an extraction unit and a separation and recovery unit;
said CO 2 Storage unit for supplying CO 2 Condensed into liquid and stored, and comprises a cooler (5) and an intermediate storage tank (6) which are sequentially communicated, wherein the inlet of the cooler (5) is used for communicating external CO 2 A storage tank;
the CO is 2 The conveying unit is used for conveying CO 2 And heating the mixture to a supercritical state, wherein the mixture comprises a subcooler (7), a booster pump (8) and an extraction heater (9) which are sequentially communicated with an outlet of the intermediate storage tank (6);
the extraction unit comprises an extraction kettle (1), and CO is arranged on the extraction kettle (1) 2 An inlet, a raw material inlet, an extraction outlet and CO 2 Recovery of CO 2 The inlet is communicated with the outlet of the extraction heater (9), and CO 2 The recycling port is communicated with the inlet of the cooler (5), and the raw material inlet is communicated with an external raw material storage tank (110) through a raw material pipeline;
the separation and recovery unit comprises a separation heater (2), a separation kettle (3) and a product collecting tank (350), which are sequentially communicated with the extraction outlet; CO is also arranged on the separation kettle (3) 2 An outlet for CO to be separated from the product 2 Discharging;
the raw material pipeline, the communicating pipeline of the extraction outlet and the inlet of the separation heater (2), the communicating pipeline of the outlet of the separation heater (2) and the separation kettle (3), and the communicating pipeline of the separation kettle (3) and the product collecting tank (350) are all sleeved with a jacket (310), a first inlet (311) and a first outlet (312) are arranged on the jacket (310), and the first inlet (311) and the first outlet (312) are used for being connected with an external heat source.
2. The supercritical extraction apparatus with a heat tracing structure according to claim 1, wherein:
a heat exchange coil (601) is arranged in the intermediate storage tank (6), and the heat exchange coil (601) is communicated with an external heat exchange medium and used for adjusting CO in the intermediate storage tank (6) 2 The temperature of (2).
3. The supercritical extraction apparatus with a heat tracing structure according to claim 1 or 2, characterized in that:
the separation and recovery unit further comprises CO 2 Tail gas storage tank (4), CO 2 An inlet, an outlet and CO are arranged on the tail gas storage tank (4) 2 The inlet of the tail gas storage tank (4) is communicated with the CO on the extraction kettle (1) 2 Recovery port, CO 2 The inlet and the outlet of the tail gas storage tank (4) are communicated with the inlet of the cooler (5).
4. The supercritical extraction apparatus with a thermally associated structure of claim 3 wherein:
CO on the separation kettle (3) 2 The outlet is communicated with the inlet of the cooler (5) or CO through valve control 2 Inlet and outlet of tail gas storage tank (4) for CO 2 Can be recycled.
5. The supercritical extraction apparatus with a thermally associated structure of claim 4, wherein:
and a liquid level meter and a pressure gauge are further arranged in the intermediate storage tank (6) and used for monitoring the liquid level and the pressure of the intermediate storage tank (6).
6. The supercritical extraction apparatus with a thermally associated structure of claim 5 wherein:
the CO is 2 A heat exchange coil (601) is arranged in the tail gas storage tank (4), and the heat exchange coil (601) is communicated with an external heat exchange medium and used for adjusting CO 2 CO in the tail gas storage tank (4) 2 The temperature of (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222800521.8U CN218774328U (en) | 2022-10-24 | 2022-10-24 | Supercritical extraction device with heat tracing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222800521.8U CN218774328U (en) | 2022-10-24 | 2022-10-24 | Supercritical extraction device with heat tracing structure |
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| Publication Number | Publication Date |
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| CN218774328U true CN218774328U (en) | 2023-03-31 |
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| CN202222800521.8U Active CN218774328U (en) | 2022-10-24 | 2022-10-24 | Supercritical extraction device with heat tracing structure |
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| CN (1) | CN218774328U (en) |
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- 2022-10-24 CN CN202222800521.8U patent/CN218774328U/en active Active
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