CN104874284B - A kind of alkalescence hydrate gel micro mist and preparation method and application - Google Patents
A kind of alkalescence hydrate gel micro mist and preparation method and application Download PDFInfo
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- CN104874284B CN104874284B CN201510212091.XA CN201510212091A CN104874284B CN 104874284 B CN104874284 B CN 104874284B CN 201510212091 A CN201510212091 A CN 201510212091A CN 104874284 B CN104874284 B CN 104874284B
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Abstract
The invention belongs to environment-friendly materials technical field, discloses a kind of alkalescence hydrate gel micro mist and preparation method and application.The micro mist is made up of the surface modifier of the alkali compounds of 100 mass parts, the water of 10～50 mass parts, 0.5～10 mass parts gel enhancing agent and 0.5～10 mass parts.By regulating and controlling the hydration levels of alkali compounds and introducing gel enhancing agent and surface modifier, gained alkalescence hydrate gel micro mist has the advantages that acid gas adsorption amount is big, adsorption rate is fast, good stability to the present invention.
Description
Technical field
The invention belongs to environment-friendly materials technical field, and in particular to a kind of alkalescence hydrate gel micro mist and preparation method thereof
With application.
Background technology
From the CO produced by combustion of fossil fuel2, SO2, NOx, H2The pernicious gases such as S are to cause global warming and acid
The main cause of the environmental problems such as rain formation, is vigorously advocating low-carbon (LC) life, today of healthy living, is capturing the acidity in air
Gas is significant to the sustainable development of environment and economic society.
CO2Emission source has dispersiveness and two kinds of concentrated.Existing technology is difficult to realize to decentralized CO2The CO of emission source2
Capture, thus CO2Capture is mainly applied to the CO such as fossil fired power plant, cement plant, steel plant, synthesis ammonia plant, oil plant2Collection
Middle emission source.CO is separated currently used for capture2Method have chemical method, Physical and bioanalysis, these methods have which each
The different scope of application, wherein with chemical absorption method research the most extensively, is also most favored by commercial market.Alkanolamine solution and carbon
Acid salt solution is two kinds of the most frequently used absorbents of chemical absorption method, and both solution is big to carbon dioxide absorption amount, running cost
Relatively low, it is suitable for large-scale commercial application, but which is serious to equipment corrosion, regeneration energy consumption is higher.In commercial Application, can typically adopt
Reduce the corrosion to equipment and regeneration energy consumption with addition additive.
SO2, NOx, H2S is the three kinds of predominant gas to form acid rain, drastically influence people's body and life health.At present,
Technology for Domestic Flue Gas Desulfurization species is various, is divided into dry desulfurization, semi-dry desulphurization and wet desulphurization according to the state of absorbent.Dry
Nothing waste water, the discharge of spent acid in method sweetening process, secondary pollution is effectively reduced, but its desulfuration efficiency is relatively low, and equipment
Huge.Wet desulphurization adopts liquid-absorbant washing flue gas to remove SO2, device therefor is fairly simple, processing ease, and desulfurization is imitated
Rate is high, but flue gas after desulfurization temperature is relatively low, and the corrosion to equipment is serious compared with dry method.Gas denitrifying technology at present based on dry method,
Mainly there are two kinds of techniques of SCR and SNCR, and desulfurization at this stage is often separately processed with denitration, although industrial desulfurization is with denitration
Through realizing integration, but it is only all that the processing unit of two kinds of pernicious gases is simply combined, such as limestone-gypsum
Method, although this joint processing technology is with comparatively ideal treatment effect, equipment investment is big, and cost is of a relatively high.
Generally speaking, the problem of existing processing method all various degrees, such as absorption rate are slow, regeneration energy consumption
High, absorption efficiency is low, absorbent loss is big, equipment investment is big, operating cost is high, absorbent is strong to the corrosivity of equipment etc..
These problems directly or indirectly have impact on its application in the industrial production.Thus it is good, again to be badly in need of a kind of absorbent properties of exploitation
The new way that raw energy consumption is low, equipment corrosion is little, investment and operation cost are low, new method.
Content of the invention
In place of solving the shortcoming and defect of above prior art, the primary and foremost purpose of the present invention is to provide a kind of alkalescence
Hydrate gel micro mist.
Another object of the present invention is to providing the preparation method of above-mentioned alkalescence hydrate gel micro mist.
It is still another object of the present invention to provide application of the above-mentioned alkalescence hydrate gel micro mist in sour gas absorption.
The object of the invention is achieved through the following technical solutions：
A kind of alkalescence hydrate gel micro mist, by the alkali compounds of 100 mass parts, the water of 10～50 mass parts, 0.5～
The surface modifier composition of 10 mass parts gel enhancing agent and 0.5～10 mass parts.
The preferred Li of described alkali compounds2CO3、Na2CO3、K2CO3、MgCO3、Ca(OH)2、NaOH、KOH、Ba(OH)2、
Mg(OH)2, and the mixture of one or more in MEA, diethanol amine and triethanolamine.
One kind in the preferred polyacrylic acid powder of described gel enhancing agent, Polyacrylamide Powder, gelatin and waterglass
Or two or more mixtures.
The preferred nano silicon of described surface modifier, Graphene, lauryl sodium sulfate, cetyl ammonium bromide
In one or more mixture.
The preparation method of above-mentioned alkalescence hydrate gel micro mist, comprises the following steps：Alkaline chemical combination by 100 mass parts
The surface modifier mixing of thing, the water of 10～50 mass parts, 0.5～10 mass parts gel enhancing agent and 0.5～10 mass parts
Uniformly, high-dispersion ultrafine alkalescence hydrate gel micro mist is obtained.
Application of the above-mentioned alkalescence hydrate gel micro mist in sour gas absorption.
Described sour gas refers to CO2、SO2、NOxAnd H2One or more mixed gas in S.
The principle of the present invention is：Alkaline hydrate gel micro mist belongs to gas-liquid-solid course of reaction to the absorption of sour gas,
Reaction is divided into three processes, and one is sour gas molecule to absorbent surface and diffusion inside；Two is absorbent to sour gas
Physical adsorption process；Three is the chemical action process of sorbent molecule and sour gas molecule.In presence of water, sour gas
Body is dissolved in formation acid solution in the water being wrapped in inside micro mist, and then with alkaline hydrate reaction so as to reach sour gas absorption
Purpose.Alkalescence hydrate gel micro mist provided by the present invention has the spy of high dispersive, high-specific surface area and loose structure
Point, is that sour gas provides enough adsorption sites, and absorbing reaction can be carried out at normal temperatures and pressures, and reaction speed is fast, gas
Body adsorbance is big.While the present invention is internally formed firm reticular supporting structure so as to improve using gel enhancing agent in particle
The stability of material, using surface modifier so that absorbent micro mist has good dispersiveness, while increased gas contact
Area is so as to greatly improve absorbent properties of the material to sour gas.
The product of the present invention has the advantage that and beneficial effect：
(1) the alkaline hydrate gel micro mist of the present invention has that acid gas adsorption amount is big, adsorption rate fast and stability
Good advantage；
(2) the alkaline hydrate gel micro mist of the present invention have little to equipment corrosion, renewable and regeneration energy consumption is low
Advantage.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
A kind of mass fraction of the present embodiment is 70% Na2CO3Alkaline hydrate gel micro mist, by 3.5g Na2CO3Powder
End, 1g water, 0.2g polyacrylic acid powder and 0.3g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching CO2Gas, records intervals CO2Uptake,
As a result as shown in table 1.
Embodiment 2
A kind of mass fraction of the present embodiment is 85% K2CO3Alkaline hydrate gel micro mist, by 4.25g K2CO3Powder
End, 0.5g water, 0.15g polyacrylic acid powder and 0.1g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching CO2Gas, records intervals CO2Uptake,
As a result as shown in table 1.
Embodiment 3
A kind of mass fraction of the present embodiment is 80% Ca (OH)2Alkaline hydrate gel micro mist, by 4g Ca (OH)2Powder
End, 0.7g water, 0.1g Polyacrylamide Powder, 0.1g graphene powder and 0.1g Nano-meter SiO_22Powder is prepared by evenly mixing
Obtain.
The alkaline hydrate gel micro mist of the present embodiment is catching CO2Gas, records intervals CO2Uptake,
As a result as shown in table 1.
Embodiment 4
The present embodiment a kind of containing the Ca (OH) that mass fraction is 60%2With the K that mass fraction is 20%2CO3Alkalescence hydration
Thing gel micro mist, by 3g Ca (OH)2Powder, 1g K2CO3Powder, 0.8g water, 0.1g polyacrylic acid powder and 0.1g Nano-meter SiO_22
Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching CO2Gas, records intervals CO2Uptake,
As a result as shown in table 1.
Embodiment 5
A kind of mass fraction of the present embodiment is 70% Ca (OH)2Alkaline hydrate gel micro mist, by 3.5g Ca (OH)2
Powder, 1.2g water, 0.2g Nano-meter SiO_22Powder and 0.1g polyacrylic acid powder are prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching SO2Gas, records intervals SO2Uptake,
As a result as shown in table 1.
Embodiment 6
A kind of mass fraction of the present embodiment is 75% Na2CO3Alkaline hydrate gel micro mist, by 3.75g Na2CO3
Powder, 1g water, 0.1g gelatin and 0.15g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching H2S gas, records intervals H2S uptake,
As a result as shown in table 1.
Embodiment 7
A kind of mass fraction of the present embodiment is 70% Ca (OH)2With the Na that mass fraction is 10%2CO3Alkalescence hydration
Thing gel micro mist, by 3.5g Ca (OH)2Powder, 0.5g Na2CO3Powder, 0.7g water, 0.1g waterglass, 0.1g Graphene and
0.1g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching SO2Gas, records intervals SO2Uptake,
As a result as shown in table 1.
Embodiment 8
The present embodiment a kind of containing the Ca (OH) that mass fraction is 60%2With the diethanol amine that mass fraction is 20%
(DEA) alkaline hydrate gel micro mist, by 3g Ca (OH)2Powder, 1g DEA, 0.6g distilled water, 0.2g polyacrylic acid powder,
0.1g cetyl ammonium bromide powder and 0.1g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching SO2Gas, records intervals SO2Uptake,
As a result as shown in table 1.
Embodiment 9
The present embodiment a kind of containing the Na that mass fraction is 30%2CO3, mass fraction be 40% Ca (OH)2Divide with quality
Number is 10% diethanol amine (DEA) alkalescence hydrate gel micro mist, by 1.5g Na2CO3Powder, 2g Ca (OH)2Powder,
0.5g diethanol amine (DEA), 0.5g water, 0.3g polyacrylic acid powder and 0.2g Nano-meter SiO_22Powder is prepared into by evenly mixing
Arrive.
The alkaline hydrate gel micro mist of the present embodiment is catching NO2Gas, records intervals NO2Uptake,
As a result as shown in table 1.
Embodiment 10
The present embodiment a kind of containing the Na that mass fraction is 30%2CO3, mass fraction be 20% Ca (OH)2Divide with quality
Number is 20% K2CO3Alkaline hydrate gel micro mist, by 1.5g Na2CO3Powder, 1g Ca (OH)2Powder, 1g K2CO3Powder
End, 1.2g water, 0.1g polyacrylic acid powder and 0.2g Nano-meter SiO_22Powder is prepared by evenly mixing.
The alkaline hydrate gel micro mist of the present embodiment is catching H2S gas, records intervals H2S uptake,
As a result as shown in table 1.
Comparative example 1
3.5g Na is directly adopted2CO3To catch CO2Gas, records intervals CO2Uptake, as a result as table 1
Shown.
Comparative example 2
3.5g Ca (OH) is directly adopted2Powder and 0.5g Na2CO3The mixture of powder is catching SO2Gas, records
Intervals SO2Uptake, as a result as shown in table 1.
Comparative example 3
3.75g Na is directly adopted2CO3To catch H2S gas, records intervals H2S uptake, as a result as table
Shown in 1.
Comparative example 4
1.5g Na is directly adopted2CO3With 2g Ca (OH)2The powdered absorbent for mixing is catching NO2Gas, note
Lower intervals NO of record2Uptake, as a result as shown in table 1.
In above-described embodiment and comparative example, catching reaction is carried out under normal pressure all at room temperature (about 28 DEG C).
1 sour gas of table absorbs result
Can be seen that by 1 result of table：The alkaline hydrate gel micro mist of the present invention has that acid gas adsorption amount is big, absorption
The advantage of the fast and good stability of speed.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, other any Spirit Essences without departing from the present invention and the change that is made under principle, modification, replacement, combine, simplify,
Equivalent substitute mode is all should be, is included within protection scope of the present invention.
Claims (5)
1. a kind of alkalescence hydrate gel micro mist, it is characterised in that：The micro mist by 100 mass parts alkali compounds, 10～
The surface modifier composition of the water of 50 mass parts, 0.5～10 mass parts gel enhancing agent and 0.5～10 mass parts；
Described gel enhancing agent refers to one or more in polyacrylic acid, polyacrylamide, gelatin and waterglass
Mixture；Described surface modifier refers to nano silicon, Graphene, lauryl sodium sulfate and cetyl ammonium bromide
In one or more mixture.
2. according to claim 1 a kind of alkalescence hydrate gel micro mist, it is characterised in that：Described alkali compounds is
Refer to Li2CO3、Na2CO3、K2CO3、MgCO3、Ca(OH)2、NaOH、KOH、Ba(OH)2、Mg(OH)2, MEA, diethanol amine and
One or more mixture in triethanolamine.
3. described in claim 1 or 2 a kind of alkalescence hydrate gel micro mist preparation method, it is characterised in that including following step
Suddenly：By the alkali compounds of 100 mass parts, the water of 10～50 mass parts, 0.5～10 mass parts gel enhancing agent and 0.5～
The surface modifier of 10 mass parts is mixed, and obtains alkaline hydrate gel micro mist.
4. application of the alkaline hydrate gel micro mist described in claim 1 or 2 in sour gas absorption.
5. application of the alkalescence hydrate gel micro mist according to claim 4 in sour gas absorption, it is characterised in that：
Described sour gas refers to CO2、SO2、NOxAnd H2One or more mixed gas in S.
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| GB1473701A (en) * | 1973-06-09 | 1977-05-18 | Collo Gmbh | Filter material |
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