CN106984137A - A kind of absorption CO of phase separation2Polyaminoacid ionic liquid preparation and its application method - Google Patents
A kind of absorption CO of phase separation2Polyaminoacid ionic liquid preparation and its application method Download PDFInfo
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- CN106984137A CN106984137A CN201611206216.9A CN201611206216A CN106984137A CN 106984137 A CN106984137 A CN 106984137A CN 201611206216 A CN201611206216 A CN 201611206216A CN 106984137 A CN106984137 A CN 106984137A
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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
- B01D53/1493—Selection of liquid materials for use as absorbents
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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
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- 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
- B01D2252/10—Inorganic absorbents
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- 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
- B01D2252/20—Organic absorbents
- B01D2252/204—Amines
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- 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
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
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- 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
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- 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
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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]
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- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The invention provides a kind of CO being separated2Absorbent system.Using absorbent in capture CO2After can be separated as rich CO2Solid phase and widow CO2Liquid phase, propose only to rich CO2Solid phase carry out heating desorption, it is to avoid the energy that heated solvent is consumed.Meanwhile, by polyaminoacid ionic liquid and magnetic Nano ion (Fe3O4) compound, capture CO2Afterwards, can still occur phenomenon of phase separation.Using the effect of externally-applied magnetic field, by rich CO2Solid phase rapid subsidence, come with liquid phase separation, saved the time, improved efficiency, compared to traditional absorbent, still with the low advantage of regeneration energy consumption.
Description
Technical field
The present invention relates to CO2Absorption techniques field, more particularly to liquid absorption CO2Technical field.
Background technology
Caused by adjoint globalization of world economy, variation and the fast development of integration of regional economics, climate warming
Global climate disaster the problem of allow the world to think deeply traditional development pattern again.It is traditional with " high energy consumption, high pollution,
Carbon emission produced by the high-carbon economic model that maximum discharge " is characterized and its Global climate change crisis brought it is current and
The overall welfare of following human society, Mode change of accelerating economic development turns into the inexorable trend of global economic development.China
CO in recent years2Present situation that discharge capacity occupies first place in the world is and existing so that China must face the pressure from public opinion from international community
Extensive economic growth model be not suitable with the demand of China's economic development, development low-carbon economy, which turns into, changes existing economy
The approach of pattern, China starts reply climate change and energy-saving and emission-reduction including national strategy.
Research at present is more ripe, industrial a kind of wide variety of method for handling sour gas is chemical solvent absorption
Method, this method often makees absorbent with aminated compounds.Traditional chemical absorbent is in cyclic process to CO2Absorption it is not high, inhale
Receive agent lose larger, regeneration energy consumption it is high, the shortcomings of there is system corrosion.Therefore, in the urgent need to a kind of high-efficiency environment friendly, low energy consumption,
Free of contamination CO2Absorbent.Phase separation absorbent is a kind of new gas absorption system, with after gas reaction, phase point
From different phases, such as liquid-liquid two-phase, solid-liquid two-phase, liquid-liquid-liquid three is equal, the value and significance with further investigation.
Current CO2Capture, separation method mainly have solvent absorption, absorption method, membrane separation process etc., these methods are also each
Certain defect and limit its and further apply.
Chemical solvent absorption method is to study more ripe, industrial a kind of widely used method for handling sour gas, its
It is a major advantage that:To CO2Good separating effect, can obtain purity very high CO2, partial pressure very low CO can be handled2Gaseous mixture
Body.Certainly, it is strong there is also the corrosivity to equipment, easily foaming, the shortcomings of solvent reclamation energy consumption is big.Ionic liquid has many excellent
Good characteristic, such as steam are forced down, fusing point is low, heat endurance is good, solvability is strong, nonflammable, structure is adjustable.However, ion
Liquid viscosity is larger, especially the ionic liquid of functionalization, is absorbing CO2Viscosity increased dramatically afterwards, because of the decline of mass-transfer efficiency
And cause CO2Absorption efficiency is reduced.Its viscosity can be reduced after ionic liquid and water are combined, however, in the regeneration of absorbent
During, because heated solvent can consume substantial amounts of energy, greatly increase regeneration energy consumption.
The content of the invention
First, the invention provides a kind of CO being separated2Absorbent system.Using absorbent in capture CO2After can phase
It is separated into rich CO2Solid phase and widow CO2Liquid phase, only to rich CO2Solid phase carry out heating desorption, it is to avoid heated solvent institute
The energy of consumption.
Secondly, invention further provides by polyaminoacid ionic liquid and magnetic Nano ion (Fe3O4) compound, capture CO2
Afterwards, can still occur phenomenon of phase separation.Using the effect of externally-applied magnetic field, by rich CO2Solid phase rapid subsidence, open with liquid phase separation
Come, saved the time, improved efficiency, compared to traditional absorbent, still with the low advantage of regeneration energy consumption.
Absorbent preparation flow of the invention is short, CO2Absorption/desorption is simple to operate, it is easy to industrialized mass production and should
With.
The absorbent of the present invention is to CO2Absorbability it is strong, regeneration energy consumption is low, environmental protection, simple to operate.
A kind of absorption CO for phase separation that the present invention is provided2Polyaminoacid ionic liquid preparation method, including:
1 synthesis PDDA (PDADMAC)
[66.6688g, 247.41mmol] dimethyl diallyl ammonium chloride solution is weighed, [0.6g, 2.63mmol] triggers
Agent ammonium persulfate (K2S2O8)、[0.0028g,7.5*10-3Mmol] complexing agent disodium ethylene diamine tetraacetate (EDTA-2Na),
[0.928g, 10mmol] chain-transferring agent thioglycolic acid (TGA) is dissolved separately in 10mL ultra-pure waters.At room temperature, sample-adding mixing,
Magnetic agitation, and it is passed through N2.It is transferred to after 20min in 70 DEG C of water-baths, after reaction 24h, is warming up to 80 DEG C, maintains after 6h, stop
Only react, be cooled to room temperature.Rotary evaporation is concentrated, afterwards, is dried in vacuo 48h.Obtain PDDA
(PDADMAC)。
2 prepare P [DADMAC] [OH] (ion exchange)
The PDDA (PDADMAC) of [8.0835g, 0.05mol] is weighed, ultra-pure water 40mL is added
Dissolving.In the chromatographic column that 717 anion exchange resin after cleaning are added to a diameter of 4cm, the resin height of addition is 12cm.
Resin is cleaned again using ultra-pure water, after 3 times, record flows down the pH value of water, to keeping constant.Add PDADMAC water-soluble
Liquid, makes it flow through resin naturally, records the pH value of the solution flowed down;The solution flowed down is refunded into chromatographic column again, flowed down naturally
After record pH value.Operated more than repeating, constant to solution ph, then ion exchange is finished, and obtains P [DADMAC] [OH] solution.
3 prepare polyaminoacid ionic liquid (P [DADMAC] [AA]) (neutralization reaction)
[0.05mol] amino acid or derivatives thereof (- OH contained by amino acid is added in obtained quaternary ammonium aqueous alkali
Measure as standard ,-OH moles are identical with quaternary ammonium base mole).N2Atmosphere, 40 DEG C, magnetic agitation reacts 24h.Rotary evaporation is dense
Contracting, 60 DEG C are dried in vacuo 48h afterwards.Produce product polyaminoacid ionic liquid.
4 prepare polyaminoacid ionic liquid-magnetic particle compound (PAAILs-Fe3O4)
Polyaminoacid ionic liquid (PAAILs) aqueous solution is prepared, Fe is added3O4Nano-particle, magnetic nano particle protonatomic mass
It is 0.03%-1% with PAAILs mass ratioes.25 DEG C of isothermal vibration 20min.
The present invention separately provides a kind of absorption CO of phase separation2Polyaminoacid ionic liquid application method, including:
1 prepares polyaminoacid ionic liquid (PAAILs), and CO is passed through thereto2;
2 solid liquid phase by centrifuging phase separation is separated, and takes out solid phase;
3 by rich CO2Solid phase is taken out after being heated to 120 DEG C, insulation 4h, and the solid phase after desorption is dissolved in into stoste phase again.
Realize in this approach and carry out CO again2Absorb, solid phase is separated, desorption and regeneration.Circulation.
It is preferred that there is provided a kind of absorption CO of phase separation2Polyaminoacid ionic liquid application method, including:
1 to polyaminoacid ionic liquid-magnetic particle compound (PAAILs-Fe3O4) absorbent liquid in be passed through
CO2;
2, by externally-applied magnetic field, the solid liquid phase of phase separation are quickly separated, solid phase is taken out;
3 by rich CO2Solid phase be heated to 120 DEG C, taken out after insulation 4h, the solid phase after desorption be dissolved in stoste again
Phase.
Realize in this approach and carry out CO again2Absorb, solid phase is separated, desorption and regeneration.Circulation.
Brief description of the drawings
Fig. 1 be [PDADMAC] [Gly], [PDADMAC] [Gly]-Fe3O4 absorb the CO2 solid phase sedimentation times scheme.
Fig. 2 be [PDADMAC] [Trp], [PDADMAC] [Trp]-Fe3O4 absorb the CO2 solid phase sedimentation times scheme.
Fig. 3 is phase separation figure after various concentrations P [DADMAC] [Trp] aqueous absorbent capture CO2.
Fig. 4 is regeneration cycle performance (absorption/desorption) figure of P [DADMAC] [Trp] absorbent.
Embodiment
Example one
1 synthesis PDDA (PDADMAC)
[66.6688g, 247.41mmol] dimethyl diallyl ammonium chloride solution is weighed, [0.6g, 2.63mmol] triggers
Agent ammonium persulfate (K2S2O8)、[0.0028g,7.5*10-3Mmol] complexing agent disodium ethylene diamine tetraacetate (EDTA-2Na),
[0.928g, 10mmol] chain-transferring agent thioglycolic acid (TGA) is dissolved separately in 10mL ultra-pure waters.At room temperature, sample-adding mixing,
Magnetic agitation, and it is passed through N2.It is transferred to after 20min in 70 DEG C of water-baths, after reaction 24h, is warming up to 80 DEG C, maintains after 6h, stop
Only react, be cooled to room temperature.Rotary evaporation is concentrated, afterwards, is dried in vacuo 48h.Obtain first step product.
2 prepare P [DADMAC] [OH] (ion exchange)
The PDDA (PDADMAC) of [8.0835g, 0.05mol] is weighed, ultra-pure water 40mL is added
Dissolving.In the chromatographic column that 717 anion exchange resin after cleaning are added to a diameter of 4cm, the resin height of addition is 12cm.
Resin is cleaned again using ultra-pure water, after 3 times, record flows down the pH value of water, to keeping constant.Add PDADMAC water-soluble
Liquid, makes it flow through resin naturally, records the pH value of the solution flowed down;The solution flowed down is refunded into chromatographic column again, flowed down naturally
After record pH value.Operated more than repeating, constant to solution ph, then ion exchange is finished.
3 prepare polyaminoacid ionic liquid-P [DADMAC] [AA] (neutralization reaction)
[0.05mol] amino acid or derivatives thereof (- OH contained by amino acid is added in obtained quaternary ammonium aqueous alkali
Measure as standard ,-OH moles are identical with quaternary ammonium base mole).N2Atmosphere, 40 DEG C, magnetic agitation reacts 24h.Rotary evaporation is dense
Contracting, 60 DEG C are dried in vacuo 48h afterwards.Produce product polyaminoacid ionic liquid (PAAILs).
4PAAILs-Fe3O4The preparation of absorbent
Prepare 1/10cSaturation-cSaturationThe PAAILs aqueous solution, be with PAAILs mass ratioes according to magnetic nano particle protonatomic mass
0.03%-1% adds magnetic nano-particle.25 DEG C of isothermal vibration 20min.The hydration particle diameter and Zeta potential of test absorbant,
Determine combining case.
The CO of 5PAAILs aqueous absorbents2Absorb and be separated
Prepare 1/10cSaturation-cSaturationThe PAAILs aqueous solution, CO is passed through thereto2.Record is passed through CO2Front and rear quality and
PH value, and observe phenomenon of phase separation.
6 richness CO2The desorption and regeneration of solid phase
Separated by the solid liquid phase centrifuged phase separation, take out solid phase, liquid phase is without any processing.By rich CO2Solid phase adds
Heat is taken out after insulation 4h to 120 DEG C, the solid phase after desorption is dissolved in into stoste phase again.CO is carried out again2Absorb, solid phase is divided
From, desorption and regeneration.Circulation.
7PAAILs-Fe3O4The CO of absorbent2Absorb and be separated
To PAAILs-Fe3O4CO is passed through in absorbent2.Record is passed through CO2Front and rear quality and pH value, and observe phase point
From phenomenon.By externally-applied magnetic field, the solid liquid phase of phase separation is quickly separated, solid phase is taken out, liquid phase is without any processing.By richness
CO2Solid phase be heated to 120 DEG C, taken out after insulation 4h, the solid phase after desorption be dissolved in stoste phase again.CO is carried out again2Inhale
Receive, solid phase is separated, desorption and regeneration.Circulation.
Embodiment two
The CO of 1 polyglycine ionic liquid P [DADMAC] [Gly] aqueous absorbent2Absorb and be separated
3mol/L P [DADMAC] [Gly] aqueous solution is prepared, 6mL absorbents is taken, CO is passed through thereto2.Record is passed through CO2
Front and rear quality and pH value, and observe phenomenon of phase separation.
2 richness CO2The desorption and regeneration of solid phase
Separated by the solid liquid phase centrifuged phase separation, take out solid phase, liquid phase is without any processing.Solid phase is heated to
120 DEG C, it is incubated after 4h and takes out, the solid phase after desorption is dissolved in stoste phase again.CO is carried out again2Absorb, solid phase is separated, solution
Inhale regeneration.Circulation.
3P[DADMAC][Gly]-Fe3O4The preparation of absorbent
3mol/L P [DADMAC] [Gly] aqueous solution is prepared, 6mL absorbents are taken, 1mg Fe is added3O4Nano-particle.25
DEG C isothermal vibration 20min.The hydration particle diameter and Zeta potential of test absorbant, determine combining case.
4P[DADMAC][Gly]-Fe3O4The CO of absorbent2Absorb and be separated
CO is passed through into absorbent2.Record is passed through CO2Front and rear quality and pH value, and observe phenomenon of phase separation.
5 richness CO2The desorption and regeneration of solid phase
By externally-applied magnetic field, the solid liquid phase of phase separation is quickly separated, solid phase is taken out, liquid phase is without any processing.Will be solid
Heat phase is taken out after insulation 4h to 120 DEG C, the solid phase after desorption is dissolved in into stoste phase again.CO is carried out again2Absorb, admittedly
Phase separation, desorption and regeneration.Circulation.
Example three
The CO of 1 poly- tryptophan ionic liquid P [DADMAC] [Trp] aqueous absorbent2Absorb and be separated
0.5mol/L P [DADMAC] [Trp] aqueous solution is prepared, 6mL absorbents is taken, CO is passed through thereto2.Record is passed through
CO2Front and rear quality and pH value, and observe phenomenon of phase separation.
2 richness CO2The desorption and regeneration of solid phase
Separated by the solid liquid phase centrifuged phase separation, take out solid phase, liquid phase is without any processing.Solid phase is heated to
120 DEG C, it is incubated after 4h and takes out, the solid phase after desorption is dissolved in stoste phase again.CO is carried out again2Absorb, solid phase is separated, solution
Inhale regeneration.Circulation.
3P[DADMAC][Trp]-Fe3O4The preparation of absorbent
0.5mol/L P [DADMAC] [Trp] aqueous solution is prepared, 6mL absorbents are taken, 2mg Fe is added3O4Nano-particle.
25 DEG C of isothermal vibration 20min.The hydration particle diameter and Zeta potential of test absorbant, determine combining case.
4P[DADMAC][Trp]-Fe3O4The CO of absorbent2Absorb and be separated
CO is passed through into absorbent2.Record is passed through CO2Front and rear quality and pH value, and observe phenomenon of phase separation.
5 richness CO2The desorption and regeneration of solid phase
By externally-applied magnetic field, the solid liquid phase of phase separation is quickly separated, solid phase is taken out, liquid phase is without any processing.Will be solid
Heat phase is taken out after insulation 4h to 120 DEG C, the solid phase after desorption is dissolved in into stoste phase again.CO is carried out again2Absorb, admittedly
Phase separation, desorption and regeneration.Circulation.
P[DADMAC][Gly]-Fe3O4Particle diameter and Zeta potential table
P[DADMAC][Trp]-Fe3O4Particle diameter and Zeta potential table
[PDADMAC] [Gly] and [PDADMAC] [Gly]-Fe3O4CO2 absorbability tables
[PDADMAC] [Gly] (3mol/L) absorbs CO2Solid phase sedimentation time table afterwards
[PDADMAC][Gly]-Fe3O4Absorb CO2Solid phase sedimentation time table afterwards
The CO of [PDADMAC] [Trp]2Absorbability table
[PDADMAC] [Trp] absorbs CO2Solid phase sedimentation time table afterwards
[PDADMAC][Trp]-Fe3O4(0.2%) CO is absorbed2Solid phase sedimentation time table afterwards
[PDADMAC][Trp]-Fe3O4(0.1%) CO is absorbed2Solid phase sedimentation time table afterwards
P [DADMAC] [Gly] CO2Absorbability and phase separation table
Claims (7)
1. a kind of absorption CO of phase separation2Polyaminoacid ionic liquid preparation method, it is characterised in that:
Synthesize PDDA,
Quaternary ammonium aqueous alkali is prepared,
Polyaminoacid ionic liquid is prepared,
Prepare polyaminoacid ionic liquid-magnetic particle compound.
2. preparation method according to claim 1, it is characterised in that described synthesis poly dimethyl allyl chlorination
Ammonium:
Weigh [66.6688g, 247.41mmol] dimethyl diallyl ammonium chloride solution, [0.6g, 2.63mmol] initiator mistake
Ammonium sulfate (K2S2O8)、[0.0028g,7.5*10-3Mmol] complexing agent disodium ethylene diamine tetraacetate (EDTA-2Na), [0.928g,
10mmol] chain-transferring agent thioglycolic acid (TGA) is dissolved separately in 10mL ultra-pure waters;
At room temperature, sample-adding mixing, magnetic agitation, and be passed through N2;
It is transferred to after 20min in 70 DEG C of water-baths, after reaction 24h, is warming up to 80 DEG C, maintains after 6h, stop reaction.
3. preparation method according to claim 1, it is characterised in that described prepares quaternary ammonium aqueous alkali:
The PDDA (PDADMAC) of [8.0835g, 0.05mol] is weighed, ultra-pure water 40mL is added molten
Solution;
In the chromatographic column that 717 anion exchange resin after cleaning are added to a diameter of 4cm, the resin height of addition is 12cm;
Resin is cleaned again using ultra-pure water, after 3 times, record flows down the pH value of water, to keeping constant;
The PDADMAC aqueous solution is added, it is flowed through resin naturally, the pH value of the solution flowed down is recorded;By the solution flowed down again
Chromatographic column is refunded, pH value is recorded after flowing down naturally;Operated more than multiple, it is constant to solution ph.
4. preparation method according to claim 1, it is characterised in that described prepares polyaminoacid ionic liquid:
[0.05mol] amino acid is added in quaternary ammonium aqueous alkali;
N2Atmosphere, 40 DEG C, magnetic agitation reacts 24h.
5. preparation method according to claim 1, it is characterised in that described prepares polyaminoacid ionic liquid-magnetic
Particle composite:
Prepare 1/10cSaturation-cSaturationPolyaminoacid ionic liquid (PAAILs) aqueous solution, according to magnetic nano particle protonatomic mass with
PAAILs mass ratioes are that 0.03%-1% adds appropriate Fe3O4Nano-particle, 5 DEG C of isothermal vibration 20min.
6. a kind of absorption CO of phase separation2Polyaminoacid ionic liquid application method, it is characterised in that:
CO is passed through into polyaminoacid ionic liquid (PAAILs)2;
Separated by the solid liquid phase centrifuged phase separation, take out solid phase;
By rich CO2Solid phase is taken out after being heated to 120 DEG C, insulation 4h, and the solid phase after desorption is dissolved in into stoste phase again.
7. a kind of absorption CO of phase separation2Polyaminoacid ionic liquid application method, it is characterised in that:
To polyaminoacid ionic liquid-magnetic particle compound (PAAILs-Fe3O4) absorbent liquid in be passed through CO2;
By externally-applied magnetic field, the solid liquid phase of phase separation is quickly separated, solid phase is taken out;
By rich CO2Solid phase be heated to 120 DEG C, taken out after insulation 4h, the solid phase after desorption be dissolved in stoste phase again.
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CN110314496B (en) * | 2019-08-06 | 2022-01-25 | 中国化学工业桂林工程有限公司 | Absorption liquid for rubber banburying waste gas treatment, preparation method and application thereof |
CN110614011A (en) * | 2019-09-25 | 2019-12-27 | 湖北大学 | Functional carbon dioxide adsorbent with temperature and magnetic response and preparation method thereof |
CN112295363A (en) * | 2020-08-31 | 2021-02-02 | 中石化南京化工研究院有限公司 | Method for strengthening phase separation of phase change absorbent |
CN115253639A (en) * | 2022-07-25 | 2022-11-01 | 北京石大油源科技开发有限公司 | Low concentration flue gas CO2Low-cost high-efficiency trapping complete set of novel process |
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