CN107398147A - A kind of method of flue gas decarbonization composition and flue gas decarbonization - Google Patents
A kind of method of flue gas decarbonization composition and flue gas decarbonization Download PDFInfo
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- CN107398147A CN107398147A CN201710718927.2A CN201710718927A CN107398147A CN 107398147 A CN107398147 A CN 107398147A CN 201710718927 A CN201710718927 A CN 201710718927A CN 107398147 A CN107398147 A CN 107398147A
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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
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
- B01D2252/2053—Other nitrogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
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Abstract
The invention provides one kind the invention provides a kind of flue gas decarbonization composition, including：The parts by weight of diamine compounds 5~50；The parts by weight of desorption promoter 0.1~15；The parts by weight of antioxidant 0.05~5；The parts by weight of corrosion inhibiter 0.05~5；The parts by weight of water 25~95.One or more of the desorption promoter in citric acid, sodium acetate, sodium lactate, sodium citrate, lactic acid.Flue gas decarbonization composition provided by the invention uses diamine compounds as main absorbent, selects the components such as citric acid to absorb auxiliary agent for solution, good in combination with specific proportioning carbon dioxide removal effect, CO2Absorptive capacity is high；Corrosion resistance is enhanced in combination with antioxidant and corrosion inhibiter.Simultaneously low using the present invention program regeneration energy consumption, resolution factor is high.
Description
Technical field
The present invention relates to gas isolation of purified technical field, more particularly, to a kind of flue gas decarbonization composition and flue gas decarbonization
Method.
Background technology
In recent decades, due to CO2Excessive emissions cause epidermic temperature constantly to raise, brought very to environment
Big harm, various natural calamities also grow in intensity, and the utilization process of oil, coal and natural gas etc. can produce CO2, chemistry,
Various synthesizers, hydrogen energy source in the industry such as biology, the energy, metallurgy prepare gas, biorefinery periodic off-gases, metallurgy and power plant
Also the CO containing various concentrations in emission etc.2, CO is removed for production link2Just turn into one of essential production
Process, CO is reduced for post processing link2Direct discharge it is significant to environmental protection for the survival of mankind.To discharge
CO2Reclaimed, fixed, utilization and renewable resources, it has also become the problem of particularly developed country extremely pays close attention to for countries in the world.
CO2Emission reduction is the climate change significant problem that the current whole world faces, and is severe challenge to industrial economy especially energy industry.
CO2The technology main flow of subtractive process is broadly divided into 3 major classes：Solvent absorption decarburization technique, UF membrane decarburization technique,
Solid absorbent adsorbs decarburization technique, wherein, solvent absorption decarburization technique is most attractive so far, using also the widest
A kind of general isolation technics, current extensive CO2Trap still based on the good amine process of the chemo-selective under low partial pressure,
Amine method traps CO2During, the organic amine in solution is easily and O2、CO2, carbide etc. chemical degradation occurs, heat drop also easily occurs
Solution, especially with O in flue gas2Oxidative degradation occupy the first.On the one hand the formation of organic amine catabolite promotes amine loss, separately
On the one hand the corrosion of aggravation equipment and the problems such as cause solution foaming, cause to produce unstable.Amine degradation problem is always amine
CO in method trapping flue gas2During existing insoluble technical barrier.In addition, renewable absorption cycle passes through more than nearly ten
Year development, develop into the absorbents of compounding ingredients from the absorbent of one pack system high energy consumption, the component and content problem of absorbent,
It is still the study hotspot of countries in the world scientific circles.In order to further improve the absorbability of absorbent, improve its oxidative degradation
Ability, reduce corrosivity, reduce energy consumption when being lost and regenerating caused by volatilization, it is efficient that people are directed to exploitation always
Chemical solution absorbent.
CN102049173A one kind deep removal CO from admixture of gas2Method, made with a kind of compound amine aqueous solution
For absorbent, the concentration of total amine is 20%~50% by weight percentage in absorbent；Serotonin includes：Main absorbent is
MDEA, content account for the 70%~90% of total amine concentration；Absorbefacient is two kinds in HEP, DMA2P, DMAE, and absorbefacient accounts for always
The 10%~30% of amine concentration.CO in a kind of recovery waste gas of CA200710011508.12It is such a compound molten with composite decarbonizing solution
The composition and percentage by weight of liquid are as follows：Compound amine aqueous solution 20~60%, wherein the one or more containing low concentration are fast
One or more long response time rate amines of reaction rate amine and higher concentration, wherein fast response rate amines use monoethanolamine or two
Monoethanolamine or piperazine, long response time rate amines are MEDA or ANMP or TEA, and selective absorbing composition is polyalcohol ether, and corrosion inhibiter is vanadium
Sour sodium, antioxidant content are sodium sulphate or copper acetate.The N methyldiethanol amine decarbonizing solution of CN200410066416.X improvement,
Mainly it is made up of the N methyldiethanol amine aqueous solution and activator, activator is made up of morpholine and piperazine, activator and N- methyl
The weight ratio of diethanol amine is 0.05~0.20.But mostly there is CO in above-mentioned existing flue gas decarburization absorption agent2Absorptive capacity
Low, absorbent is unstable and degradable and system's example problem such as decarburization equipment burn into regeneration energy consumption height.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of flue gas decarbonization composition, and the present invention provides
Flue gas decarbonization composition CO2The high regeneration energy consumption simultaneously of absorptive capacity is low.
The invention provides a kind of flue gas decarbonization composition, including：
One or more of the desorption promoter in citric acid, sodium lactate, sodium acetate, sodium citrate, lactic acid.
Preferably, the diamine compounds are the diamine compounds containing alkyl, hydroxyalkyl, wherein alkyl, hydroxyl alkane
Base is independently selected from C1~C5 alkyl and C1~C5 hydroxyalkyl.
Preferably, the diamine compounds are selected from AEEA, hydroxypropylethylendiamine diamine, hydroxyethyl piperazine, ethyl
Piperazine, 1,4- bis- (2- ethoxys) piperazine, 1,4- bis- (2- hydroxypropyls) piperazine, N, N- lupetazins, NEP and N,
The one or more of N- diethyl piperazines.
Preferably, the antioxidant is selected from 4- tert-butyl catechols, BHT, acetoxime, N, N-
Double (2- ethoxys) glycine, dodecyl hydroquinones, anthraquinone, anthraquinone disulfonic acid and one kind or several in anthraquinone disulphonate
Kind.
Preferably, the corrosion inhibiter is made up of metal oxide and single oily imidazoline；The metal oxide is selected from vanadic acid
One or more in salt, metavanadate, vanadic anhydride, basic carbonate ketone and potassium antimony tartrate；The metal oxide with
The mass ratio of single oily imidazoline is 1：(0.05~2).
Preferably, the flue gas decarbonization composition includes：
The invention provides a kind of preparation method of the flue gas decarbonization composition as described in above-mentioned technical scheme, including：
Diamine compounds, desorption promoter, antioxidant, corrosion inhibiter and water are mixed, obtain flue gas decarbonization composition.
The invention provides a kind of method of flue gas decarbonization, including：
Mixed gas containing carbon dioxide is contacted with the decarburization composition described in claim 1.
Preferably, the condition of the contact includes：Temperature is 30~80 DEG C, and liquid-gas ratio is 0.05~3.0kg/Nm3。
Preferably, the mode of the contact is counter current contacting.
Compared with prior art, the invention provides a kind of flue gas decarbonization composition, including：Diamine compounds 5~50
Parts by weight；The parts by weight of desorption promoter 0.1~15；The parts by weight of antioxidant 0.05~5；The parts by weight of corrosion inhibiter 0.05~5；Water 25~95
Parts by weight.One or more of the desorption promoter in citric acid, sodium acetate, sodium lactate, sodium citrate, lactic acid.This hair
The flue gas decarbonization composition of bright offer uses diamine compounds as main absorbent, selects the components such as citric acid to be helped for solution absorption
Agent, CO good in combination with specific proportioning carbon dioxide removal effect2Absorptive capacity is high；In combination with antioxidant and corrosion inhibiter
Enhance corrosion resistance.Simultaneously low using the present invention program regeneration energy consumption, resolution factor is high.
Embodiment
The invention provides a kind of flue gas decarbonization composition, including：
One or more of the desorption promoter in citric acid, sodium lactate, sodium citrate, sodium acetate, lactic acid.
Flue gas decarbonization composition provided by the invention includes the diamine compounds of 5~50 parts by weight；Preferably include 10~
The diamine compounds of 50 parts by weight；More preferably include the diamine compounds of 20~45 parts by weight.
Diamine compounds of the present invention are the diamine compounds containing alkyl, hydroxyalkyl, wherein alkyl, hydroxyalkyl
Independently selected from C1~C5 alkyl and C1~C5 hydroxyalkyl.
The diamine compounds are preferably selected from AEEA, hydroxypropylethylendiamine diamine, hydroxyethyl piperazine, ethyl piperazine
Piperazine, 1,4- bis- (2- ethoxys) piperazine, 1,4- bis- (2- hydroxypropyls) piperazine, N, N- lupetazins, NEP and N, N-
The one or more of diethyl piperazine；It is more preferably selected from AEEA, hydroxypropylethylendiamine diamine, hydroxyethyl piperazine, 1,4- bis-
The one or more of (2- hydroxypropyls) piperazine, NEP and N, N- diethyl piperazine.
Source of the invention for above-mentioned diamine compounds is commercially available without limiting.
The above-mentioned diamine compounds of the present invention, for the good absorbing effect of carbon dioxide, absorb and held as main absorbent components
Amount is high.
Flue gas decarbonization composition provided by the invention includes the desorption promoter of 0.1~15 parts by weight；Preferably include 0.1~13
The desorption promoter of parts by weight；More preferably include the desorption promoter of 1~10 parts by weight.
The one kind or several of desorption promoter of the present invention in citric acid, sodium acetate, sodium lactate, sodium citrate, lactic acid
Kind.Source of the invention for above-mentioned desorption promoter is commercially available without limiting.
The above-mentioned diamine compounds of the present invention are as main absorbent components, coordinated particular types and the desorption promoter matched
It is high for the good absorbing effect of carbon dioxide, absorptive capacity.
Flue gas decarbonization composition provided by the invention includes the antioxidant of 0.05~5 parts by weight；Preferably 0.1~4 weight
The antioxidant of part；The more preferably antioxidant of 0.5~3 parts by weight.
According to the present invention, the antioxidant is preferably selected from 4- tert-butyl catechols, BHT, acetone
In oxime and N, N- double (2- ethoxys) glycine, dodecyl hydroquinones, anthraquinone, anthraquinone disulfonic acid and anthraquinone disulphonates
It is one or more of；It is more preferably selected from 4- tert-butyl catechols, DBPC 2,6 ditertiary butyl p cresol, double (2- ethoxys) the sweet ammonia of N, N-
One or more in acid, dodecyl hydroquinones, anthraquinone, anthraquinone disulfonic acid and anthraquinone disulphonate.
Source of the invention for the antioxidant is commercially available without limiting.
Flue gas decarbonization composition provided by the invention includes the corrosion inhibiter of 0.05~5 parts by weight；Preferably include 0.1~4 weight
Measure the corrosion inhibiter of part；The more preferably corrosion inhibiter of 0.5~3 parts by weight.
Corrosion inhibiter of the present invention is preferably made up of metal oxide and single oily imidazoline；The metal oxide preferably selects
One or more from vanadate, metavanadate, vanadic anhydride, basic carbonate ketone and potassium antimony tartrate；The metavanadic acid
Salt includes but is not limited to sodium metavanadate and potassium metavanadate；The vanadate includes but is not limited to sodium vanadate and potassium vanadate.
The mass ratio of the metal oxide and single oily imidazoline is preferably 1：(0.05~2)；More preferably 1：(0.1~
1.5)；Most preferably 1：(0.5~1.3).
The present invention is prepared into by the synergy that above-mentioned antioxidant and corrosion inhibiter coordinate main absorbent components and absorb auxiliary agent
The decarburization adsorbent that arrives is anticorrosive, antioxidant effect is good.
Flue gas decarbonization composition provided by the invention includes the water of 25~95 parts by weight；Preferably include 30~90 parts by weight
Water.
Flue gas decarbonization composition described in the one of embodiment of the present invention includes：
Flue gas decarbonization composition described in the one of embodiment of the present invention includes：
Flue gas decarbonization composition described in the one of embodiment of the present invention includes：
The invention provides a kind of flue gas decarbonization composition, including：The parts by weight of diamine compounds 5~50；Desorption promoter
0.1~15 parts by weight；The parts by weight of antioxidant 0.05~5；The parts by weight of corrosion inhibiter 0.05~5；The parts by weight of water 25~95.The desorption
One or more of the auxiliary agent in citric acid, sodium acetate, sodium lactate, sodium citrate, lactic acid.Flue gas decarbonization provided by the invention
Composition uses diamine compounds as main absorbent, selects the components such as citric acid to absorb auxiliary agent for solution, in combination with specific
It is good to match carbon dioxide removal effect, CO2Absorptive capacity is high；Corrosion resistance is enhanced in combination with antioxidant and corrosion inhibiter.Together
Shi Caiyong the present invention program regeneration energy consumptions are low, and resolution factor is high.
The invention provides a kind of preparation method of the flue gas decarbonization composition as described in above-mentioned technical scheme, including：
Diamine compounds, desorption promoter, antioxidant, corrosion inhibiter and water are mixed, obtain flue gas decarbonization composition.
The preparation method of flue gas decarbonization composition provided by the invention is by diamine compounds, desorption promoter, antioxidant, slow
Erosion agent, which is added to the water, can obtain flue gas decarbonization composition.
The present invention for above-mentioned composition concrete composition and match it is above-mentioned be clearly described, it is no longer superfluous herein
State.The present invention for the hybrid mode without limit, it is well known to those skilled in the art.The temperature wherein mixed is excellent
Elect 20 DEG C~50 DEG C as.
It is mixed that decarburizer provided by the invention can remove and reclaim lime burning kiln flue gas, blast furnace gas, natural gas etc.
Wherein carbon dioxide is closed, with reclaiming the carbon dioxide in the gases such as boiler of power plant flue gas, carbonic acid industrial tail gas, this is de- for removing
Carbon solution has the advantages such as absorptive capacity is big, degree of purification is high, infiltration rate is fast, desorption efficiency is big, regeneration energy consumption is low.
The invention provides a kind of method of flue gas decarbonization, including：
Mixed gas containing carbon dioxide is contacted with the decarburization composition described in claim 1.
The method of flue gas decarbonization provided by the invention is to contact the mixed gas containing carbon dioxide with decarburization composition.
According to the present invention, it is not particularly limited for the contact conditions, as long as decarburization composition can fill with mixed gas
Tap is touched.
The present invention is for mixed gas without restriction, including but not limited to CO2、O2、H2O, N2, CO, micro carbide and
Nitrogen oxides.
The condition of the contact preferably includes：Temperature is 30~80 DEG C, and liquid-gas ratio is 0.05~3.0kg/Nm3；More preferably
It it is 40~60 DEG C for temperature, liquid-gas ratio is 0.08~2.0kg/Nm3；Most preferably 40~60 DEG C, liquid-gas ratio be 0.08~
1.5kg/Nm3。
The mode of the contact is preferably counter current contacting, as contacts flue gas decarbonization composition with flue gas adverse current, so as to
Greatly improve contact effect.
The present invention carbon dioxide removal efficiency high, effect by the way of said temperature and liquid-gas ratio and counter current contacting
It is good.
When the acidity of rich solution after the decarburizer makes absorption because of absorbing carbon dioxide reaches certain Acidity Range, its
Middle rich solution pH is 7.5~9.5, and preferably rich solution pH is 7.5~8.0, the decarburizer can be desorbed, make the dioxy of absorption
Change carbon to separate from the decarburizer, so that the decarburizer regenerates.The desorption can be by used de-
Carbon agent is heated to realize, wherein, the temperature of the heating can be 85~130 DEG C, preferably 90~115 DEG C.Heating
Time can be 15~180 minutes, preferably 30~60 minutes.
In the industrial production, flue gas decarbonization and desorption process can be carried out in absorption tower and desorber respectively, the suction
The species and application method of receipts tower and desorber are known to those skilled in the art, and here is omitted.
Below, the preferable commercial Application mode of the flue gas decarbonization agent of the present invention is provided：
Flue gas decarbonization：The flue gas decarbonization agent of the present invention is preheating to 40~60 DEG C by heat exchanger, sprayed from absorption tower top
Leaching, flue gas are passed through from absorption tower bottom, and it is 0.08~1.5kg/m to control liquid-gas ratio3, flue gas decarbonization agent and carbonated gas
Body inversely contacts, and the gas being cleaned is discharged into air through tower top, absorbs CO2Decarburizer be referred to as rich solution, entered by bottom of towe
Rich solution groove.
Desorption：The rich solution obtained from the rich solution groove on absorption tower is preheating to 70~90 DEG C by heat exchanger, from desorber
Top sprays, and has at desorber bottom and uses steam-heated heat-exchanger rig, absorbs the rich solution of carbon dioxide in desorber
Part is desorbed, and 95~120 DEG C are heated in heat-exchanger rig and is desorbed again, and the liquid after desorption flows into desorption apparatus bottom,
The desorption gas of high temperature is discharged with vapor from the top of desorber, subsequently into condenser and vapour liquid separator, in stripping gas
It is cooled to return to desorber, obtained purer high temperature CO with the condensed water separated2Gas, it is sent into next procedure.It is high
The desorption gas of temperature imparts heat to the rich solution from top spray, 70~90 DEG C of rich solutions can be heated and be easy to desorb.
It is referred to as lean solution after rich solution desorption, is discharged into lean liquid tank from the bottom of desorber, and recycle as flue gas decarbonization agent.
The anti-oxidant experiment of flue gas decarbonization agent：200ml flue gas decarbonization agent solution, oxygen partial pressure are 0.6MPa reaction under high pressure
In kettle, reaction temperature is 130 DEG C, reaction time 4h, before and after being reacted using GC-MS and the agent of ICP Instrument measuring flue gas decarbonizations
Mass concentration, and the degradation rate of flue gas decarbonization agent is calculated, experimental result is shown in Table 1.
Flue gas decarbonization agent corrosion inhibition test：400ml flue gas decarbonization agent solution, 80 DEG C of solution temperature, using A3 charcoal steel standards
Test piece carries out total immersion test, and the reaction time is 336h (14d), the front and rear weight of measure A3 test piece reactions, calculates different flue gases and takes off
The corrosion rate of carbon agent solution, experimental result are shown in Table 1.
In order to further illustrate the present invention, flue gas decarbonization composition provided by the invention is carried out with reference to embodiments detailed
Thin description.
Embodiment 1
The present embodiment is used to illustrate the flue gas decarbonization agent provided by the invention.
(1) composition of simulated flue gas is (volume)：CO2：20.56%；O2：7.16%；H2O：11.2%；N2：59.83、
CO：1.25%；Micro carbide and nitrogen oxides.
(2) flue gas decarbonization agent is prepared
By 150 grams of N, N- diethyl piperazine, 10 grams of citric acids, 5 grams of dodecyl hydroquinones, 3 grams of potassium antimony tartrates, 2
Gram oily imidazoline of list is added in 500 milliliters of water, is stirred, and quantitative to 1000 grams with distilled water, is taken off so as to obtain flue gas
Carbon agent.
(3) flue gas decarbonization
The described decarburizer prepared in 1000 grams of (2) is heated to 50 DEG C, with minipump by decarburizer from filler
The upper end of tower is sent into the packed tower equipped with glass web ring, and the simulated flue gas described in (1) is passed through into cigarette from the bottom of packed tower
In tracheae, gas inversely contacts with the liquid sprayed from upper end, liquid-gas ratio 0.25kg/Nm3, cleaned gas is from absorption tower
Top row goes out, and absorbs SO2Rich solution enter rich solution groove.With enhanced flue gas analyzer (Germany, model：Vario Plus) detection
The gas discharged by tower top forms, using collection CO2The amount of carbon dioxide in gas methods measure rich solution (absorbs and held
Amount), with equation below calculated uptake,
The amount of carbon dioxide before amount-absorption of carbon dioxide after absorptive capacity=absorption
It the results are shown in Table in 1
(4) desorb
After the completion of flue gas decarbonization, the decarburization rich solution that step 3 obtains is put into three-necked flask, a bite plugs in thermometer, and a bite is inserted
Fume pipe leads to the bottom of decarburization rich solution, and nitrogen is passed through into fume pipe, and the speed being passed through is 2 × 10-4Nm3/ min, is passed through
Time is 80 minutes, while carries out being heated to 100 DEG C, the carbon dioxide of absorption is obtained lean solution, using using collection CO2
The amount of remaining carbon dioxide, desorption quantity and desorption efficiency are calculated with equation below in gas methods measure lean solution,
Desorb the amount of the carbon dioxide after amount-desorption of the carbon dioxide before capacity=desorption
Amount × 100% of carbon dioxide before desorption efficiency=desorption quantity/desorption
Then decarburization during secondary decarburization is carried out using the decarburizer with obtained lean solution repeat step (3) and (4), measure
Gas composition, absorptive capacity afterwards, and secondary desorption quantity and secondary desorption efficiency are calculated, wherein, secondary desorption efficiency is equal to secondary desorption
Amount divided by second of uptake, the rest may be inferred.The results are shown in Table 1.
Embodiment 2
The present embodiment is used to illustrate flue gas decarbonization agent provided by the invention and flue gas decarbonization method.
(1) composition of simulated flue gas is (volume)：CO2：20.56%；O2：7.16%；H2O：11.2%；N2：59.83、
CO：1.25%；Micro carbide and nitrogen oxides.
(2) decarburizer is prepared
By 250 grams of N- hydroxyethyl piperazines, 10 grams of sodium citrates, double (2- ethoxys) glycine of 5 grams of N, N-, 3 gram of five oxidation
Two vanadium, 2 grams of oily imidazolines of list are added in 500 milliliters of water, are stirred, and quantitative to 1000 grams with distilled water, so as to obtain
Flue gas decarbonization agent.
Step (3) and (4) carry out flue gas decarbonization, the desorption of decarburizer and measure in the way of similarly to Example 1
Absorptive capacity, desorption quantity and desorption efficiency, the results are shown in Table 1.
Embodiment 3
The present embodiment is used to illustrate flue gas decarbonization agent provided by the invention and flue gas decarbonization method.
(1) composition of mixed gas is simulated with embodiment 1.
(2) decarburizer is prepared
By 150 grams of N- hydroxypropylpiperazines, 10 grams of lactic acid, 5 grams of 2,6- Butylated Hydroxytoluenes, 2 grams of sodium metavanadates, 3 grams of single oil
Imidazoline is added in 500 milliliters of water, and quantitative to 1000 grams with distilled water, so as to obtain flue gas decarbonization agent.
Step (3) and (4) carry out the desorption of flue gas decarbonization, decarburizer in the way of similarly to Example 1, unlike
Heating-up temperature in step 3 is 60 DEG C, liquid-gas ratio 2.0kg/Nm3, the results are shown in Table 1.
Embodiment 4
The present embodiment is used to illustrate flue gas decarbonization agent provided by the invention and flue gas decarbonization method.
1st, the composition of mixed gas is simulated with embodiment 2.
2nd, decarburizer is prepared
By 250 grams of N, N- dipropyl piperazine, 10 grams of lemon sodium, 5 grams of anthraquinone disulfonic acids, 3 grams of basic copper carbonates, 2 grams of single oil
Imidazoline is added in 500 milliliters of water, quantitative to 1000 grams with distilled water after stirring, that is, obtains the flue gas decarbonization agent of the present invention.
3 and 4 carry out the desorption of flue gas decarbonization and decarburizer in the way of similarly to Example 1, the difference is that in step 3
Heating-up temperature be 60 DEG C, liquid-gas ratio 2.0kg/Nm3, as a result it is listed in table 1.
Table 1
From the results shown in Table 1, decarburizer provided by the invention can be used for removing and the dioxy in recovered flue gas
Change carbon, the desulfuration solution has the advantages such as absorptive capacity is big, degree of purification is high, infiltration rate is fast, desorption efficiency is big, regeneration energy consumption is low.
Comparative example 1
(1) composition of simulated flue gas is (volume)：CO2：20.56%；O2：7.16%；H2O：11.2%；N2：59.83、
CO：1.25%；Micro carbide and nitrogen oxides.
(2) decarburizer is prepared
By 250 grams of N- hydroxyethyl piperazines, 5 grams of N, N- double (2- ethoxys) glycine, 3 grams of vanadic anhydrides, 2 grams of oily miaows of list
Oxazoline is added in 500 milliliters of water, is stirred, and quantitative to 1000 grams with distilled water, so as to obtain flue gas decarbonization agent.
Step (3) and (4) carry out flue gas decarbonization, the desorption of decarburizer and measure in the way of similarly to Example 2
Absorptive capacity, desorption quantity and desorption efficiency, the results are shown in Table 1.
Comparative example 2
(1) composition of simulated flue gas is (volume)：CO2：20.56%；O2：7.16%；H2O：11.2%；N2：59.83、
CO：1.25%；Micro carbide and nitrogen oxides.
(2) decarburizer is prepared
150 grams of N- hydroxypropylpiperazines, 5 grams of 2,6- Butylated Hydroxytoluenes, 2 grams of sodium metavanadates, the oily imidazoline of 3 grams of lists are added
Into 500 milliliters of water, stir, and it is quantitative to 1000 grams with distilled water, so as to obtain flue gas decarbonization agent.
Step (3) and (4) carry out flue gas decarbonization, the desorption of decarburizer and measure in the way of similarly to Example 3
Absorptive capacity, desorption quantity and desorption efficiency, the results are shown in Table 1.
Comparative example 3
(1) composition of simulated flue gas is (volume)：CO2：20.56%；O2：7.16%；H2O：11.2%；N2：59.83、
CO：1.25%；Micro carbide and nitrogen oxides.
(2) decarburizer is prepared
By 250 grams of AEEAs, 100 grams of -2 methyl isophthalic acids of 2- amino-propyl alcohol, 50 grams of dimethylethanolamines, 50 grams of second
Hydramine, 50 grams of piperazines are added in 500 milliliters of water, are stirred, and quantitative to 1000 grams with distilled water, are taken off so as to obtain flue gas
Carbon agent.
Step (3) and (4) carry out flue gas decarbonization, the desorption of decarburizer and measure in the way of similarly to Example 1
Absorptive capacity, desorption quantity and desorption efficiency, the results are shown in Table 1.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. flue gas decarbonization composition, it is characterised in that including：One or more of the desorption promoter in citric acid, sodium lactate, sodium acetate, sodium citrate, lactic acid.
- 2. composition according to claim 1, it is characterised in that the diamine compounds are to contain alkyl, hydroxyalkyl Diamine compounds, wherein alkyl, hydroxyalkyl are independently selected from C1~C5 alkyl and C1~C5 hydroxyalkyl.
- 3. composition according to claim 2, it is characterised in that the diamine compounds be selected from AEEA, Hydroxypropylethylendiamine diamine, hydroxyethyl piperazine, ethyl piperazidine, 1,4- bis- (2- ethoxys) piperazine, 1,4- bis- (2- hydroxypropyls) piperazine, N, The one or more of N- lupetazins, NEP and N, N- diethyl piperazine.
- 4. composition according to claim 1, it is characterised in that the antioxidant is selected from 4- tert-butyl catechols, 2, 6- BHTs, acetoxime, N, N- double (2- ethoxys) glycine, dodecyl hydroquinones, anthraquinone, the sulphurs of anthraquinone two One or more in acid and anthraquinone disulphonate.
- 5. composition according to claim 1, it is characterised in that the corrosion inhibiter is by metal oxide and single oily imidazoline Composition；The metal oxide is in vanadate, metavanadate, vanadic anhydride, basic carbonate ketone and potassium antimony tartrate It is one or more of；The mass ratio of the metal oxide and single oily imidazoline is 1：(0.05~2).
- 6. composition according to claim 1, it is characterised in that the flue gas decarbonization composition includes：
- A kind of 7. preparation method of flue gas decarbonization composition as claimed in claim 1, it is characterised in that including：Diamine compounds, desorption promoter, antioxidant, corrosion inhibiter and water are mixed, obtain flue gas decarbonization composition.
- A kind of 8. method of flue gas decarbonization, it is characterised in that including：Mixed gas containing carbon dioxide is contacted with the decarburization composition described in claim 1.
- 9. decarbonization method according to claim 8, it is characterised in that the condition of the contact includes：Temperature is 30~80 DEG C, liquid-gas ratio is 0.05~3.0kg/Nm3。
- 10. decarbonization method according to claim 8, it is characterised in that the mode of the contact is counter current contacting.
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| CN109012090A (en) * | 2018-07-30 | 2018-12-18 | 大连理工大学 | It is a kind of can oxidation resistant non-aqueous decarbonizing solution for trap carbon dioxide in gas mixture |
| CN111185071A (en) * | 2020-01-09 | 2020-05-22 | 国家能源投资集团有限责任公司 | Carbon dioxide absorbent and preparation method and application thereof |
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| CN102711957A (en) * | 2010-01-05 | 2012-10-03 | 蒂森克虏伯伍德公司 | CO2is removed from gas with low CO2partial pressure by 2,2'-(ethylene dioxy) di (ethylamine) (EDEA) |
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| CN111185071A (en) * | 2020-01-09 | 2020-05-22 | 国家能源投资集团有限责任公司 | Carbon dioxide absorbent and preparation method and application thereof |
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