NL2033813A - High-efficiency supercritical equipment - Google Patents

High-efficiency supercritical equipment Download PDF

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Publication number
NL2033813A
NL2033813A NL2033813A NL2033813A NL2033813A NL 2033813 A NL2033813 A NL 2033813A NL 2033813 A NL2033813 A NL 2033813A NL 2033813 A NL2033813 A NL 2033813A NL 2033813 A NL2033813 A NL 2033813A
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Netherlands
Prior art keywords
gas
carbon dioxide
liquid
liquid separator
filter
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NL2033813A
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Dutch (nl)
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NL2033813B1 (en
Inventor
Li Qingsong
Liu Genshui
Liu Jie
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Jiangsu Hanbon Sci & Tech Co
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Publication of NL2033813A publication Critical patent/NL2033813A/en
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Publication of NL2033813B1 publication Critical patent/NL2033813B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
    • B01D15/40—Selective adsorption, e.g. chromatography characterised by the separation mechanism using supercritical fluid as mobile phase or eluent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
    • B01D15/16—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the fluid carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/36—Control of physical parameters of the fluid carrier in high pressure liquid systems

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Disclosed is high-efficiency supercritical equipment, and relates to the related technical field of chromatography. The high-efficiency 5 supercritical equipment comprises a gas-liquid separator and a carbon dioxide filter which are connected through a pipeline, wherein the gas- liquid separator is used for separating a gas-liquid mixture and conveying separated gas to the carbon dioxide filter, the carbon dioxide filter is used for filtering the gas, and the filtered carbon dioxide is cooled by a 10 refrigerator in a supercritical fluid chromatography system and then is reused. According to the high-efficiency supercritical equipment, pure carbon dioxide can be obtained at the component collection part of the industrial-grade supercritical fluid chromatography system, and the problems that the carbon dioxide consumption of the industrial-grade 15 supercritical fluid chromatography system is large and the carbon dioxide cannot be recycled are solved. Figure 1

Description

HIGH-EFFICIENCY SUPERCRITICAL EQUIPMENT
TECHNICAL FIELD
[0001] The present disclosure relates to the related technical field of chromatography, in particular to high-efficiency supercritical equipment.
BACKGROUND
[0002] In the supercritical fluid chromatography system, an organic solvent is replaced with a large amount of supercritical carbon dioxide to serve as a mobile phase. Compared with a common liquid chromatography system, the supercritical fluid chromatography system has the advantages of being high in separation speed, environmentally- friendly and the like. The laboratory-grade supercritical fluid chromatograph is small in flow and not large in carbon dioxide consumption, but the industrial-grade supercritical fluid chromatography system is extremely large in carbon dioxide consumption. If direct emission is carried out, liquid carbon dioxide in the storage tank needs to be frequently supplemented. The supercritical fluid chromatography system cannot meet the condition of long-time uninterrupted operation of industrial-grade equipment. Therefore, in the industrial-grade supercritical fluid chromatography system, the discharged gaseous carbon dioxide is usually collected and reused. At present, the technical difficulty is how to obtain pure carbon dioxide in the component collection part of the industrial-grade supercritical fluid chromatography system.
SUMMARY
[0003] The present disclosure aims to provide high-efficiency supercritical equipment so as to solve the problems in the prior art. Pure carbon dioxide can be obtained at the component collection part of the industrial-grade supercritical fluid chromatography system, and the problems that the carbon dioxide consumption of the industrial-grade supercritical fluid chromatography system is large and the carbon dioxide cannot be recycled are solved.
[0004] In order to achieve the purpose, the present disclosure provides the following scheme.
[0005] The present disclosure provides high-efficiency supercritical equipment, comprising a gas-liquid separator and a carbon dioxide filter which are connected through a pipeline. The gas-liquid separator is used for carrying out gas-liquid separation on the gas-liquid mixture internally to collect gas at the upper end of the gas-liquid separator and liquid at the lower end of the gas-liquid separator and conveying separated gas to the carbon dioxide filter, the carbon dioxide filter is used for filtering the gas, and the filtered carbon dioxide is cooled by a refrigerator in a supercritical fluid chromatography system and then is reused.
[0006] Preferably, the high-efficiency supercritical equipment further comprises a heating machine. The heating machine is connected with a heat exchanger in series, and the gas-liquid mixture enters the gas-liquid separator after being heated by the heat exchanger; and a liquid heat exchange medium is arranged in the heating machine. The liquid heat exchange medium can be water. The heating machine provides hot water for the heat exchanger and the gas-liquid separator and enables the hot water to flow circularly. The temperature of the gas-liquid mixture passing through the heat exchanger is changed by controlling the temperature of the hot water at the outlet of the heating machine. Meanwhile, the hot water is connected in series to control the temperature of the gas-liquid separator. The environment of the gas-liquid mixture during gas-liquid separation is changed. Different gas-liquid separation effects can be achieved by adjusting the temperature according to different processes.
The heat exchanger heats a mixture of gaseous carbon dioxide and organic solvents with low temperature. The mist state of the gas-liquid mixture is relieved before gas-liquid separation, so that the separation effect after entering the gas-liquid separator is guaranteed.
[0007] Optionally, the gas-liquid separator is coated with a heating part, and the heating machine, the heat exchanger and the heating part are connected in series through pipelines.
[0008] Optionally, the carbon dioxide filter is filled with tower plate filler, and the tower plate filler can filter and condense residual organic solvents and samples in the gas passing through the gas-liquid separator again to obtain pure gaseous carbon dioxide to be reused for the supercritical fluid chromatography system.
[0009] Optionally, a carbon dioxide discharge port in the top of the carbon dioxide filter is connected to the refrigerator through a pipeline, a temperature sensor is arranged at the pipeline between the carbon dioxide discharge port and the refrigerator, and the temperature sensor is electrically connected with the control end of the heating machine. The temperature sensor is used for detecting the temperature of gaseous carbon dioxide after gas-liquid separation and feeding the detected temperature back to the heating machine. The temperature of hot water in the heating machine is changed by setting different temperatures of the temperature sensor, so that a proper state in the gas-liquid separation process is obtained.
[0010] Optionally, the liquid heat exchange medium is water.
[0011] Compared with the prior art, the present disclosure has the following technical effects.
[0012] By changing the temperature of the gas-liquid mixture in front of the gas-liquid separator, the atomization state of the gas-liquid mixture is solved; through series connection of hot water, the temperature of the gas-liquid mixture and the temperature in the gas-liquid separator are consistent; by using the carbon dioxide filter, gaseous carbon dioxide is further purified, so that the purity of carbon dioxide is guaranteed; and through feedback control of the temperature sensor, the environment temperature of gas-liquid separation can be automatically adjusted, and the gas-liquid separation effect is guaranteed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] To more clearly illustrate the embodiment of the present disclosure or the technical scheme in the prior art, the following briefly introduces the attached figures to be used in the embodiment.
Apparently, the attached figures in the following description show merely some embodiments of the present disclosure, and those skilled in the art may still derive other drawings from these attached figures without creative efforts.
[0014] FIG. 1 is a structural schematic diagram of high-efficiency supercritical equipment in the present disclosure.
[0015] Reference signs: 1, heating machine; 101, heating machine hot water outlet; 102, heating machine hot water backflow port; 2, heat exchanger; 3, gas-liquid separator; 4, carbon dioxide filter; 5, temperature sensor; 6, gas-liquid mixture; and 7, refrigerator.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following clearly and completely describes the technical scheme in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure.
Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. Based on the embodiment in the present disclosure, all other embodiments obtained by the ordinary technical staff in the art under the premise of without contributing creative labor belong to the scope protected by the present disclosure.
[0017] The present disclosure aims to provide high-efficiency supercritical equipment so as to solve the problems in the prior art. Pure carbon dioxide can be obtained at the component collection part of the industrial-grade supercritical fluid chromatography system, and the problems that the carbon dioxide consumption of the industrial-grade supercritical fluid chromatography system is large and the carbon dioxide cannot be recycled are solved.
[0018] To make the foregoing objective, features and advantages of the present disclosure clearer and more comprehensible, the present disclosure is further described in detail below with reference to the attached figures and specific embodiments.
[0019] The present disclosure provides high-efficiency supercritical equipment, as shown in FIG. 1, comprising a heating machine 1, a heat exchanger 2, a gas-liquid separator 3, a carbon dioxide filter 4 and a temperature sensor 5. The heating machine 1 comprises a heating machine hot water outlet 101 and a heating machine hot water backflow port 102. The heating machine hot water outlet 101 is connected to a hot water inlet of the heat exchanger 2 through a pipeline. A hot water outlet of the heat exchanger 2 is connected to a hot water inlet of the gas-liquid separator 3 through a pipeline. A hot water outlet of the gas-liquid separator 3 is connected to the heating machine hot water backflow port 102 through a pipeline. The heat exchanger 2 and the gas-liquid separator 3 are connected in series through hot water of the heating machine 1 through a pipeline, so that it is guaranteed that the temperature of the gas-liquid mixture and the temperature in the gas- liquid separator are consistent.
[0020] The gas-liquid mixture 6 is connected to an inlet of the heat exchanger 2 through a pipeline. An outlet of the heat exchanger 2 is connected to an inlet of the gas-liquid separator 3 through a pipeline. A carbon dioxide discharge port in the top of the gas-liquid separator 3 is connected to an inlet of the carbon dioxide filter 4 through a pipeline. A carbon dioxide exhaust port in the top of the carbon dioxide filter 4 is connected to a refrigerator 7 through a pipeline for recycling. A temperature sensor 5 is arranged in the middle of the pipeline to measure the temperature of carbon dioxide after gas-liquid separation. The temperature of the carbon dioxide detected by the temperature sensor 5 can feed back the gas-liquid separation effect in real time. Signals are fed back to the heating machine 1, and the temperature of hot water in the heating machine 1 is automatically controlled, so that a good gas-liquid separation effect is guaranteed. When the supercritical fluid chromatography system is in a component collection stage, supercritical carbon dioxide is decompressed to become a gaseous state. The supercritical carbon dioxide in a mobile phase at the moment becomes a low-temperature gas-liquid mixture composed of gaseous carbon dioxide and a small amount of organic solvents, and exists in a mist aerosol form in the pipeline.
[0021] Before the gas-liquid mixture enters the gas-liquid separator 3, the gas-liquid mixture 6 is heated through the heat exchanger 2, and the state of mist aerosol is relieved. At the moment, gas-liquid separation of the gas-liquid mixture 6 is easier. After the gas-liquid mixture enters the gas-liquid separator 3, gas-liquid separation is carried out, and the discharged carbon dioxide gas is mixed with a trace amount of organic solvents or samples. Through the carbon dioxide filter 4 connected to the rear part, when passing through a tower plate filler in the filter, a trace amount of organic solvents or samples can be gradually condensed to form small liquid drops which flow to the bottom along the inner wall of the carbon dioxide filter 4. The liquid temporarily exists at the bottom of the carbon dioxide filter 4, and is discharged by controlling a valve at the bottom of the carbon dioxide filter 4 through software regularly. At the moment, gaseous carbon dioxide discharged from the top of the carbon dioxide filter 4 is purer and can be reused after being cooled by the refrigerator in the supercritical fluid chromatography system.
[0022] In the description of the present disclosure, it needs to be illustrated that the indicative direction or position relations of the terms such as "centre", "top", "bottom", "left", "right", "vertical", "horizontal", "inside" and "outside" are direction or position relations illustrated based on the attached figures, just for facilitating the description of the present disclosure and simplifying the description, but not for indicating or hinting that the indicated device or element must be in a specific direction and is constructed and operated in the specific direction, the terms cannot be understood as the restriction of the present disclosure. Moreover, the terms such as "first" and "second" are just used for distinguishing the description, but cannot be understood to indicate or hint relative importance.
[0023] Specific examples are used for illustration of the principles and implementation methods of the present disclosure. The description of the above-mentioned embodiments is used to help illustrate the method and its core principles of the present disclosure. In addition, those skilled in the art can make various modifications in terms of specific embodiments and scope of application in accordance with the teachings of the present disclosure. In conclusion, the content of this specification shall not be construed as a limitation to the present disclosure.

Claims (6)

ConclusiesConclusions 1. Hoogrenderende superkritische uitrusting, bevattende een gas- vloeistofafscheider en een kooldioxidefilter die via een pijpleiding verbonden zijn, waarbij de gas-vloeistofafscheider te gebruiken is voor het scheiden van een gas-vloeistofmengsel en het transporteren van gescheiden gas naar het kooldioxidefilter, het kooldioxidefilter te gebruiken is voor het filteren van het gas en het gefilterde kooldioxide te koelen is door een koelkast in een superkritisch vloeistofchromatografiesysteem en vervolgens wordt hergebruikt.1. High-efficiency supercritical equipment, comprising a gas-liquid separator and a carbon dioxide filter connected by a pipeline, the gas-liquid separator being usable for separating a gas-liquid mixture and conveying separated gas to the carbon dioxide filter, the carbon dioxide filter can be used for filtering the gas and the filtered carbon dioxide can be cooled through a refrigerator in a supercritical liquid chromatography system and then reused. 2. Hoogrenderende superkritische uitrusting volgens conclusie 1, verder bevattende een verwarmingsmachine, waarbij de verwarmingsmachine is in serie verbonden met een warmtewisselaar en waarbij het gas- vloeistofmengsel de gas-vloeistofafscheider binnenkomt na te zijn verwarmd door de warmtewisselaar; en een vloeibaar warmtewisselaarmedium aangebracht is in de verwarmingsmachine.The high-efficiency supercritical equipment of claim 1, further comprising a heating machine, the heating machine being connected in series with a heat exchanger and wherein the gas-liquid mixture enters the gas-liquid separator after being heated by the heat exchanger; and a liquid heat exchange medium is provided in the heating machine. 3. Hoogrenderende superkritische uitrusting volgens conclusie 2, waarbij de gas-vloeistofafscheider is gecoat met een verwarmingsonderdeel en waarbij de verwarmingsmachine, de warmtewisselaar en het verwarmingsgedeelte in serie zijn verbonden via pijpleidingen.The high-efficiency supercritical equipment according to claim 2, wherein the gas-liquid separator is coated with a heating member and wherein the heating machine, the heat exchanger and the heating section are connected in series by piping. 4. Hoogrenderende superkritische uitrusting volgens conclusie 1, waarbij het kooldioxidefilter gevuld is met torenplaatvuller en de torenplaatvuller resterende organische oplosmiddelen en monsters in het gas, dat opnieuw door de gas-vloeistofafscheider gaat, kan filteren en condenseren om zuiver gasvormig koolstofdioxide te verkrijgen.The high-efficiency supercritical equipment according to claim 1, wherein the carbon dioxide filter is filled with tower plate filler and the tower plate filler can filter and condense residual organic solvents and samples in the gas, which again passes through the gas-liquid separator, to obtain pure gaseous carbon dioxide. 5. Hoogrenderende superkritische uitrusting volgens conclusie 2, waarbij een kooldioxide-afvoerpoort in de bovenkant van het kooldioxidefilter via een pijpleiding op de koelkast aangesloten is, waarbij een temperatuursensor bij de pijpleiding tussen de kooldioxide-afvoerpoort en de koelkast aangebracht is, en waarbij de temperatuursensor elektrisch verbonden is met het bedieningseinde van de verwarmingsmachine.The high-efficiency supercritical equipment according to claim 2, wherein a carbon dioxide discharge port in the top of the carbon dioxide filter is pipelined to the refrigerator, a temperature sensor is arranged at the pipeline between the carbon dioxide discharge port and the refrigerator, and wherein the temperature sensor electrically connected to the control end of the heating machine. 6. Hoogrenderende superkritische uitrusting volgens conclusie 2, waarbij het vloeibare warmtewisselaarmedium water is.The high-efficiency supercritical equipment of claim 2, wherein the liquid heat exchanger medium is water.
NL2033813A 2021-12-30 2022-12-23 High-efficiency supercritical equipment NL2033813B1 (en)

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WO (1) WO2023125494A1 (en)

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CN114272646A (en) * 2021-12-30 2022-04-05 江苏汉邦科技有限公司 High-efficiency supercritical equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527934A1 (en) * 1982-06-03 1983-12-09 Elf Aquitaine METHOD OF FRACTIONING BLENDS BY ELUTION CHROMATOGRAPHY WITH SUPERCRITICAL FLUID AND INSTALLATION FOR ITS IMPLEMENTATION
EP1405662A2 (en) * 2002-10-02 2004-04-07 The Boc Group, Inc. CO2 recovery process for supercritical extraction
EP1703280A1 (en) * 2004-01-05 2006-09-20 DAICEL CHEMICAL INDUSTRIES, Ltd. Method of substance separation by supercritical fluid chromatography and vapor liquid separator for use therein
CN107163618A (en) * 2017-06-02 2017-09-15 广州立达尔生物科技股份有限公司 Supercritical fluid column chromatography prepares the method and device of high-purity capsochrome Capsaicin
US20210354051A1 (en) * 2020-05-15 2021-11-18 Vitalis Extraction Technology Inc. System and method for closed cycle preparative supercritical fluid chromatography

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4959873B2 (en) * 2001-01-11 2012-06-27 株式会社前川製作所 Supercritical continuous processing method and apparatus for liquid material and supercritical continuous processing system combined with refrigeration cycle
CN104056467B (en) * 2014-06-30 2016-08-24 许建中 Five-zone series supercritical carbon dioxide fluid simulated moving bed chromatography device and operation method thereof
CN212383453U (en) * 2019-10-19 2021-01-22 河南上和汇金环保科技有限公司 Industrial flue gas whitening device
CN112782315A (en) * 2020-12-31 2021-05-11 江苏汉邦科技有限公司 Continuous separation type supercritical fluid chromatographic system
CN112957765B (en) * 2021-02-05 2022-11-04 中化学华陆新材料有限公司 Supercritical carbon dioxide extraction energy-saving process
CN114272646A (en) * 2021-12-30 2022-04-05 江苏汉邦科技有限公司 High-efficiency supercritical equipment
CN218011196U (en) * 2021-12-30 2022-12-13 江苏汉邦科技有限公司 High-efficiency supercritical equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527934A1 (en) * 1982-06-03 1983-12-09 Elf Aquitaine METHOD OF FRACTIONING BLENDS BY ELUTION CHROMATOGRAPHY WITH SUPERCRITICAL FLUID AND INSTALLATION FOR ITS IMPLEMENTATION
EP1405662A2 (en) * 2002-10-02 2004-04-07 The Boc Group, Inc. CO2 recovery process for supercritical extraction
EP1703280A1 (en) * 2004-01-05 2006-09-20 DAICEL CHEMICAL INDUSTRIES, Ltd. Method of substance separation by supercritical fluid chromatography and vapor liquid separator for use therein
CN107163618A (en) * 2017-06-02 2017-09-15 广州立达尔生物科技股份有限公司 Supercritical fluid column chromatography prepares the method and device of high-purity capsochrome Capsaicin
US20210354051A1 (en) * 2020-05-15 2021-11-18 Vitalis Extraction Technology Inc. System and method for closed cycle preparative supercritical fluid chromatography

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BE1029711A1 (en) 2023-03-20
NL2033813B1 (en) 2023-07-28
CN114272646A (en) 2022-04-05
WO2023125494A1 (en) 2023-07-06
BE1029711B1 (en) 2023-10-18

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