CN106964237A - A kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method - Google Patents

A kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method Download PDF

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Publication number
CN106964237A
CN106964237A CN201710185679.XA CN201710185679A CN106964237A CN 106964237 A CN106964237 A CN 106964237A CN 201710185679 A CN201710185679 A CN 201710185679A CN 106964237 A CN106964237 A CN 106964237A
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China
Prior art keywords
ionic liquid
yarn fiber
fixed bed
bed reactors
liquid
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CN201710185679.XA
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Chinese (zh)
Inventor
银建中
甄梦媛
蔡佩
徐琴琴
周丹
刘凡
刘一凡
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Dalian University of Technology
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Dalian University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/30—Ionic liquids and zwitter-ions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention belongs to adsorption technology field CO is removed there is provided a kind of yarn fiber supported ion liquid fixed bed reactors2Method.Yarn fiber is infiltrated in ionic liquid, 10~30min is impregnated, by the load capacity for regulating and controlling ionic liquid, it is ensured that the yarn fiber of taking-up is oozed without unnecessary ionic liquid；The yarn fiber for being loaded with ionic liquid, which is layed in the tubular reactor with tower tray, turns into fixed bed reactors；It is passed through from bottom to top containing CO into fixed bed reactors2Waste gas.The method of the present invention improves the stability and dispersiveness of ionic liquid, to realize CO with a small amount of ionic liquid by the fabrics such as the cotton gauze adsorption capacity stronger to ionic liquid2Absorption, so as to trap GHG carbon dioxide, reaches purification gas, reclaims the purpose of carbon dioxide.

Description

A kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method
Technical field
The invention belongs to adsorption technology field, there is provided a kind of cheap, convenient, efficient CO absorption2Method, specifically relate to And a kind of yarn fiber supported ion liquid fixed bed reactors removing CO2Method.
Background technology
Because the environmental resource problem that greenhouse gases are caused is increasingly serious, the capture of carbon dioxide, separation with using into For the important topic of mankind's common concern.Conventional CO2Isolation technics has absorption process, absorption method and membrane separation process.With conventional Alkanolamine solution, ethanol solution and ammoniacal liquor etc. absorb CO2Selectivity is high, absorptive capacity is big, but equipment is perishable, and regeneration energy consumption is high. Absorption method is broadly divided into pressure swing adsorption method and temp.-change adsorptive process, and being often used as the material of adsorbent has molecular sieve, activated carbon, gold Belong to frame structure material and mesoporous material etc., this method technique is simple, corrosion-free, but requires higher, adsorbance to adsorbent It is limited.Membrane separation process mainly uses CO2Pass through the different separation and concentrations of permeability during organic or inorganic film from other components CO2, process driving force is the pressure difference on film both sides, and core is membrane material, and this method treating capacity is high, and device is simple, but process is numerous It is trivial, poor heat resistance.
The salt being in a liquid state at room temperature that ionic liquid is made up of zwitterion, exists as a kind of excellent green solvent Relatively broad attention and application has been obtained in recent years, and its maximum feature is that steam is forced down, heat endurance is good, function designability And stronger solvability, in CO2Adsorbing and removing field has huge applications potentiality.Blanchard in 1999 etc. exists first CO is reported on Nature2In ionic liquid [Bmim] [PF6] in there is larger solubility, and ionic liquid is practically insoluble in CO2.Conventional ionic liquid traps CO2Mainly pass through itself special construction and CO2Interaction between molecule realizes, Belong to Physical Absorption；Functionalized ion liquid is to utilize ionic liquid adjustability of structure, and function is carried out to anion or cation Change modification, introduce energy and CO2The reactive group chemically reacted, belongs to chemical absorbing.But ionic liquid is expensive, glue Degree is larger, directly absorbs CO2Cost is high, and difficulty is big, so needing to improve adsorptivity on other carriers by ionic liquid loaded Energy.
Using either physically or chemically ionic liquid is fixed on solid-state carrier, supported ionic liquid is obtained.Ion Liquid is changed into the property that " solid-state " makes carrier surface have ionic liquid in other words from liquid.The composition of cotton fiber fabric is mainly Cellulose, wide material sources are cheap, there is stronger adsorptivity, and the grating texture due to gauze and degreasing to ionic liquid The micropore of cotton, it is possible to achieve the higher diffusivity of ionic liquid.Obtain being loaded with the cotton of ionic liquid by dipping method Yarn fiber fabric, the CO absorption in fixed bed2。
The content of the invention
Ionic liquid is carried in the fabrics such as yarn fiber by the present invention by the coating method such as dipping or dropwise addition, by In ionic liquid high viscosity and the stronger suction-operated compared with strong adhesive force, and yarn fiber, regulate and control ionic liquid loaded amount.It is logical The yarn fiber for having loaded ionic liquid that this method obtains is crossed as the filler in fixed bed reactors, in more gentle bar The CO in industrial tail gas is removed under part2, larger CO is realized with a small amount of ionic liquid2Adsorbance.
Technical scheme：
A kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method, step is as follows：
(1) dipping is using one kind in following methods：
The first dipping method：Yarn fiber is infiltrated in ionic liquid, and solid-liquid weight ratio is 1:3；
Second of dipping method：Yarn fiber be infiltrated on through high-pressure carbon dioxide, methanol, ethanol, acetone dilution after from In sub- liquid, the concentration of ionic liquid is 30~50%；
10~30min is impregnated, by the load capacity for regulating and controlling ionic liquid, it is ensured that the yarn fiber of taking-up is without unnecessary ion Liquid is oozed；
(2) yarn fiber for being loaded with ionic liquid is layed in the tubular reactor with tower tray turns into fixed bed reaction Device；
(3) it is passed through from bottom to top containing CO into fixed bed reactors2Waste gas, after being separated through fixed bed reactors Gas sends into on-line gas chromatography, determines adsorptivity of the yarn fiber supported ion liquid fixed bed reactors to carbon dioxide Energy.
Described ionic liquid is the stable neutral ionic liquid at room temperature such as glyoxaline ion liquid [Bmim] of property [BF4]、[Bmim][PF6] and [C6mim][PF6] etc., and quaternary phosphine salt ionic liquid [P14666][Tf2N] etc..
Described cotton fiber includes gauze, weaving cotton and canvas etc., and its main component is cellulose.
Described contains CO2Waste gas be industrial waste gas or vehicle exhaust.
Beneficial effects of the present invention：
1. ionic liquid is used as CO2Absorbent, it is to avoid environment is polluted using organic solvent, ionic liquid To CO2Uptake it is big, selectivity is high, solvent environmental protection.
2. from cotton fiber fabric as carrier, raw material is cheap and easy to get, without preparing.
3. the ionic liquid of liquid is infiltrated into the cotton fiber fabric of solid-state, ionic liquid and CO are increased2Contact Area, improves absorption property.
4. sorbent preparation method is simple (normal temperature and pressure, without mechanism), energy consumption is low.
5. obtained sample is put in the tubular reactor with tower tray, form fixed bed and carry out suction-operated.
Embodiment
Below in conjunction with technical scheme, the embodiment of the present invention is further illustrated.
Embodiment 1
[Bmim] [BF is added dropwise into 0.200g gauzes4], until when being drawn to saturation, the ionic liquid quality of dropwise addition is 0.628g.0.350g IL are taken to instill in 0.200g gauzes, the gauze after load is loaded to be turned into the tubular reactor with tower tray Before and after fixed bed reactors, gauze clean cotton fixation sample is dried by loading.Use pure N2Purge gass are entered pipeline is adsorbed Fixed bed reactors are connected into the CO by purging by row 30min purging2In the pipeline of adsorption system.3% CO will be contained2's N2/CO2Standard Gases flow through reactor with 30mL/min volume flow, the gas of outflow via chromatograph on-line analysis into Divide to determine adsorption effect.Through chromatography, CO2Initial absorbing rate be 5mL/min, adsorbance is 21.0mL, ionic liquid Mole adsorbance of body is 0.337mol/mol.
Embodiment 2
[Bmim] [PF is added dropwise into 0.020g cottons6], until when being drawn to saturation, the ionic liquid quality of dropwise addition is 0.310g.0.500g IL are taken to instill in 0.100g cottons, the cotton after load is loaded to be turned into the tubular reactor with tower tray Before and after fixed bed reactors, gauze clean cotton fixation sample is dried by loading.Use pure N2Purge gass are entered pipeline is adsorbed Row 30min purging, the CO by purging is connected into by reactor2In the pipeline of adsorption system.3% CO will be contained2N2/CO2 Standard Gases flow through reactor with 30mL/min volume flow, and the gas of outflow is via chromatograph on-line analysis composition with true Determine adsorption effect.Through CO2Adsorption process and chromatography, CO2Initial absorbing rate be 6.1mL/min, adsorbance is 22.6mL, mole adsorbance of ionic liquid is 0.925mol/mol.
Embodiment 3
By ionic liquid [Bmim] [BF4] with absolute ethyl alcohol with 1:3 ratio mixing, through ultrasonic mixing it is uniform after, will 0.199g dries clean gauze infiltration wherein, is taken out after 15min, and gauze is placed in ventilation 24h and ethanol volatilizees completely. Obtained ionic liquid loaded amount is 0.161g.Gauze after load, which is loaded, turns into fixed bed in the tubular reactor with tower tray Before and after reactor, gauze clean cotton fixation sample is dried by loading.Use pure N2Purge gass will adsorb pipeline and carry out 30min Purging, reactor is connected into the CO by purging2In the pipeline of adsorption system.3% CO will be contained2N2/CO2Standard Gases Reactor is flowed through with 30mL/min volume flow, the gas of outflow is via chromatograph on-line analysis composition to determine absorption Effect.Through CO2Adsorption process and chromatography, CO2Initial absorbing rate be 5.3mL/min, adsorbance is 12.6mL, from Mole adsorbance of sub- liquid is 0.789mol/mol.

Claims (6)

1. a kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method, it is characterised in that step is as follows：
(1) dipping is using one kind in following methods：
The first dipping method：Yarn fiber is infiltrated in ionic liquid, and solid-liquid weight ratio is 1:3；
Second of dipping method：Yarn fiber is infiltrated on the ionic liquid after high-pressure carbon dioxide, methanol, ethanol, acetone dilution In body, the concentration of ionic liquid is 30~50%；
10~30min is impregnated, by the load capacity for regulating and controlling ionic liquid, it is ensured that the yarn fiber of taking-up is without unnecessary ionic liquid Ooze；
(2) yarn fiber for being loaded with ionic liquid is layed in the tubular reactor with tower tray turns into fixed bed reactors；
(3) it is passed through from bottom to top containing CO into fixed bed reactors2Waste gas.
2. according to the method described in claim 1, it is characterised in that described ionic liquid is neutral ionic liquid at room temperature or season Phosphonium salt class ionic liquid.
3. method according to claim 2, it is characterised in that described ionic liquid is further [Bmim] [BF4]、 [Bmim][PF6]、[C6mim][PF6] or [P14666][Tf2N]。
4. according to any described methods of claim 1-3, it is characterised in that described cotton fiber be gauze, weaving cotton or Canvas.
5. according to any described methods of claim 1-3, it is characterised in that described contains CO2Waste gas for industrial waste gas or Vehicle exhaust.
6. method according to claim 4, it is characterised in that described contains CO2Waste gas be industrial waste gas or car tail Gas.
CN201710185679.XA 2017-03-27 2017-03-27 A kind of yarn fiber supported ion liquid fixed bed reactors remove CO2Method Pending CN106964237A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107569969A (en) * 2017-08-31 2018-01-12 昆明理工大学 A kind of high poison gaseous contaminant high-efficient purification material and use device
CN108993098A (en) * 2018-08-13 2018-12-14 中国地质大学（北京） A kind of efficiently trapping CO2Eutectic solvent system and the preparation method and application thereof
CN115569629A (en) * 2022-05-26 2023-01-06 大连理工大学盘锦产业技术研究院 Method for capturing CO by using inorganic adsorbent fixed by porous framework 2 Method (2)

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US20050150383A1 (en) * 2004-01-08 2005-07-14 Korea Institute Of Science And Technology Facilitated transport membranes for an alkene Hydrocarbon separation
US20090233155A1 (en) * 2008-03-17 2009-09-17 Karl Anthony Littau Using ionic liquids
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CN102008870A (en) * 2010-09-28 2011-04-13 南京信息工程大学 Ionic liquid CO2 trapping agent and preparation method thereof
CN104470633A (en) * 2012-07-13 2015-03-25 丹麦科技大学 CO2 sorption by supported amino acid ionic liquids
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107569969A (en) * 2017-08-31 2018-01-12 昆明理工大学 A kind of high poison gaseous contaminant high-efficient purification material and use device
CN108993098A (en) * 2018-08-13 2018-12-14 中国地质大学（北京） A kind of efficiently trapping CO2Eutectic solvent system and the preparation method and application thereof
CN108993098B (en) * 2018-08-13 2021-04-13 中国地质大学（北京） Efficient CO capture2Eutectic solvent system and preparation method and application thereof
CN115569629A (en) * 2022-05-26 2023-01-06 大连理工大学盘锦产业技术研究院 Method for capturing CO by using inorganic adsorbent fixed by porous framework 2 Method (2)

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