CN103418336A - Preparation method of high-temperature calcium-based CO2 absorbing material - Google Patents
Preparation method of high-temperature calcium-based CO2 absorbing material Download PDFInfo
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- CN103418336A CN103418336A CN2013103637445A CN201310363744A CN103418336A CN 103418336 A CN103418336 A CN 103418336A CN 2013103637445 A CN2013103637445 A CN 2013103637445A CN 201310363744 A CN201310363744 A CN 201310363744A CN 103418336 A CN103418336 A CN 103418336A
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- 239000011575 calcium Substances 0.000 title claims abstract description 40
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 39
- 239000011358 absorbing material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 33
- 102000002322 Egg Proteins Human genes 0.000 claims abstract description 27
- 108010000912 Egg Proteins Proteins 0.000 claims abstract description 27
- 210000003278 egg shell Anatomy 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001179 sorption measurement Methods 0.000 claims description 17
- 230000004087 circulation Effects 0.000 claims description 14
- 238000003795 desorption Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 239000002699 waste material Substances 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000002386 leaching Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 11
- 239000002250 absorbent Substances 0.000 description 8
- 230000002745 absorbent Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000005431 greenhouse gas Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- -1 building Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920006926 PFC Polymers 0.000 description 1
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009866 aluminium metallurgy Methods 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- CEYULKASIQJZGP-UHFFFAOYSA-L disodium;2-(carboxymethyl)-2-hydroxybutanedioate Chemical compound [Na+].[Na+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O CEYULKASIQJZGP-UHFFFAOYSA-L 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000320 mechanical mixture Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a preparation method of high-temperature calcium-based CO2 absorbing material. The method includes: milling red mud and egg shell in a ball mill, screening, acid-leaching ground red mud and citric acid solution at the same temperature of 20-60 DEG C, mixing the acid-leached red mud and egg shell, adding water to mill the mixture, mixing well, and drying to obtain the high-temperature calcium-based CO2 absorbing material. The preparation method has the advantages that the cost of raw materials is low, the preparation process is simple, the material can absorb CO2 at high temperature directly so that carbon resource is recovered, the preparation method is easy for industrial production and treating waste with waste is achieved.
Description
Technical field
The present invention relates to a kind of high temperature calcium base CO that egg shell is calcium source doping red mud of take
2The preparation method of absorbing material, belong to the carbon dioxide treatment technical field.
Background technology
The contaminative waste residue of discharging when red mud is aluminium industry extraction aluminium oxide, 1 ton of aluminium oxide of the every production of average, produce 1～2 ton of red mud, to the processing of red mud, is generally to be deposited in to stack field or low-lying place at present, take a large amount of soils, also surrounding environment is polluted.Its composition is different and different with raw ore composition and aluminium method processed, and main component is Al
2O
3, CaCO
3And SiO
2, also have a small amount of magnesium, iron, titanyl compound etc.Mainly be used as fire clay, building, cement ingredient, ceramic tile etc. in industry.At CaO base CO
2The absorbing material aspect, have research to claim doped with Al therein
2O
3Can improve the circulation absorbent properties of CaO base absorbant, and use containing Al
2O
3Red mud not only reduced cost but also solved the problem that red mud is processed, reached the purpose of the treatment of wastes with processes of wastes against one another.
In recent years, the climate change that greenhouse effects cause has become a global environmental problem, more and more causes the great attention of countries in the world, and causes that the arch-criminal of greenhouse effects is exactly CO
2.China is along with the quickening of process of industrialization, CO
2Discharge capacity be growing on and on.Due to CO in atmosphere
2The continuous increase of isothermal chamber gas content and cause that greenhouse effects are fairly obvious, directly caused the variation of weather.Greenhouse gases (GHG) comprise carbon dioxide (CO
2), methane (CH
4), nitrous oxide (N
2O), HFC compound (HFCs), perfluocarbon (PFCs), sulfur hexafluoride (SF
6) 6 kinds, to the climate change effect maximum, be wherein CO
2, the warming effect of its generation accounts for 63% of the total warming effect of all greenhouse gases, and has retain very long characteristics of phase in atmosphere.In addition, CO
2Marine ecology is also had to very large impact, and ocean has almost absorbed the CO of mankind's discharges
2Half, these CO
2Increase the acidity of ocean, injured some halobiontic existence.CO
2Main source be that the burning of fossil fuel produces, therefore find the CO that a kind of suitable material absorbs the high temperature furnace discharge
2There is important theory significance.
The CO of current most study
2High temperature sorbent mainly concentrates on lithium base and calcium base pottery.The lithium-based ceramic cost is higher, and at the absorption CO that repeatedly circulates
2Process in can cause the loss of elemental lithium.With lithium-based ceramic, compare, the calcium sill has higher absorptive capacity and absorption rate, CO in the absorption process that repeatedly circulates
2Absorptive capacity descends very fast.Therefore, many researchers attempt to improve by doping the circulation absorbent properties of calcium base absorbing material.Some domestic and international researchers find, doped with Al in CaO
2O
3Be conducive to improve the circulation absorbent properties of calcium sill.The preparation doped with Al
2O
3The CaO base absorbant mainly pass through: 1) distinct methods preparation is containing doped with Al
2O
3Presoma, as sol-gel process, coprecipitation, melting burning method etc.Although these class methods absorb and circulating effect is better but cost is higher, complex process, usually are applicable to laboratory research.2) different aluminum source doping, as pure alumina, aluminate cement, kaolin, clay etc.
Up to now, there is not yet and take the CaO base high temperature CO that egg shell is calcium source doping red mud
2The report of the patent of invention of absorbing material, Research Literature etc.
Summary of the invention
The object of the present invention is to provide a kind of high temperature calcium base CO
2The preparation method of absorbing material, make the CaO base high temperature CO as the circulation absorbent properties excellence of calcium source doping red mud with egg shell
2Absorbing material, thus the preparation cost of calcium sill reduced, and provide a new way for the utilization of solid waste red mud.
The present invention realizes by following technical proposal: a kind of high temperature calcium base CO
2The preparation method of absorbing material, following each step of process:
At first respectively by red mud and egg shell in ball mill after ball milling 2～4h, after 40～80 mesh sieves, then by liquid-solid ratio (mL/g) 20～100:1, the citric acid solution that is 2～14wt% by levigate red mud and mass concentration carries out acidleach 2～6h under 20～60 ℃, red mud after acidleach mixes with egg shell, and wherein the quality of red mud accounts for 5～20wt%, then mixture is added to water and is ground to abundant mixing, dry 2h under 80 ℃, obtain high temperature calcium base CO again
2Absorbing material.
Described egg shell is powder or the egg shell after 900 ℃ of calcinings of egg shell.
To above-mentioned high temperature calcium base CO
2When the adsorption capacity of carrying out absorbing material detects, be through the following step: by high temperature calcium base CO
2Absorbing material is placed in thermogravimetric analyzer, at N
2Be warmed up to 600～850 ℃ of adsorption temps in atmosphere, then under adsorption temp, pass into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 20～30 circulations and absorbing, survey CO
2Absorptive capacity.
Described intensification is that the heating rate with 20K/min is heated up.
High temperature calcium base CO
2Absorbing material absorbs CO
2Reaction as follows:
CaO?+?CO
2?=?CaCO
3
High temperature calcium base CO
2The absorptive capacity of absorbing material is calculated as follows:
Wherein
MtFor absorbing CO
2After the quality of absorbent,
MoFor absorbing CO
2The quality of absorbent before,
XtFor high temperature calcium base CO
2The absorptive capacity of absorbing material, high temperature calcium base CO
2Absorbing material is to CO
2Theoretical absorptive capacity be 78.6%.
The Bayer process aluminium metallurgy is by add NaOH solution in bauxite, makes alumina leaching in bauxite form sodium aluminate solution and realizes separating of aluminium and other impurity.Bayer process red mud is alkalescence and sodium content is higher, experimental results show that the calcium-base absorbing agent of doping red mud is that cyclical stability or absorptive capacity are all very poor.Therefore, the present invention carries out acidleach by citric acid solution to red mud, and citric acid reacts with sodium in red mud and generates natrium citricum and discharge in pickle liquor.Citric acid is organic acid, in high temperature, can decompose fully and not have the absorbent properties that other element is brought the follow-up preparation of impact into.The present invention circulate absorb excellent in stability be because calcium oxide and process after aluminium oxide in red mud react in pyroprocess and generated mayenite (Ca
12Al
14O
33).Absorb CO in circulation
2In process, it can prevent that absorbent sintering in high temperature from causing porosity and specific area to reduce and the cyclical stability that causes reduces.
CaO base CO
2The absorptive capacity that absorbing material is higher with it, lower cost become study hotspot.And doping inert element (compound) can improve the circulation absorption CO of CaO sill
2Performance.Be considered at present be conducive to improve CO
2The inert element of cycle performance (compound) comprises Mn, La, Zr, Co, MgO, Al
2O
3Deng.The aluminium source of adulterating is generally pure Al
2O
3, aluminate cement, kaolin, clay etc.China produces aluminium big country, and the annual red mud amount produced is surprising, not only can reduce pollution to its utilization and can also increase benefit.Obtain the good high temperature of cycle performance after acidleach of the present invention is processed and after the egg shell mechanical mixture and absorbed CO
2The porous CaO sill, both obtained the good CO of cycle performance
2Absorbing material reduces the discharge of greenhouse gases, has reduced again the cost of absorbing material, and processing and utilizing mining slag, reached the purpose of the treatment of wastes with processes of wastes against one another.
The beneficial effect that the present invention possesses: the present invention is directed in power plant, flue gas a large amount of high temperature CO given off
2Problem propose, compared with the prior art, the selected cost of material of the present invention is cheap, preparation technology is simple, can reduce CO
2Discharge, reclaim carbon resource, be easy to realize suitability for industrialized production, and can reach the purpose of the treatment of wastes with processes of wastes against one another.
(1) the present invention take the mining wastes red mud as the aluminium source, take the house refuse egg shell as the calcium source, prepared the CaO base CO of doping
2Absorbing material; Preparation cost is relatively low, also for the improvement utilization of red mud, has opened up a new field simultaneously.
(2) the present invention is mainly for CO such as power plant
2The industry that discharge capacity is large, can at high temperature directly absorb CO
2, save the energy; Reclaim carbon resource simultaneously, reduce CO
2Discharge, thus play the effect of protection of the environment.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but protection domain of the present invention is not limited to described content.
Embodiment 1
At first respectively by red mud and egg shell in ball mill after ball milling 2h, after 40 mesh sieves, then by liquid-solid ratio (mL/g) 60:1, the citric acid solution that is 8wt% by levigate red mud and mass concentration carries out acidleach 4h under 40 ℃, red mud after acidleach mixes with the egg shell after 900 ℃ of calcinings through deionized water washing, and wherein the quality of red mud accounts for 10wt%, then mixture is placed in to mortar and adds water and be ground to abundant mixing, dry 2h under 80 ℃, obtain high temperature calcium base CO again
2Absorbing material.
To above-mentioned high temperature calcium base CO
2When the adsorption capacity of carrying out absorbing material detects, be through the following step: by high temperature calcium base CO
2Absorbing material is placed in thermogravimetric analyzer, at N
2Heating rate with 20K/min in atmosphere is warmed up to 750 ℃ of adsorption temps, then under adsorption temp, passes into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 20 circulations and absorbing, survey CO
2Absorptive capacity be 27.8%.
Embodiment 2
With reference to example 1, difference is red mud while mixing with egg shell, and the quality of red mud accounts for 15wt%, surveys CO
2Absorptive capacity be 26.24%.
Embodiment 3
With reference to example 1, difference is that the mass concentration of citric acid solution is 14wt%, surveys CO
2Absorptive capacity be 27.07%.
Embodiment 4
With reference to example 1, difference is the powder that egg shell is egg shell, surveys CO
2Absorptive capacity be 26.99%.
Embodiment 5
With reference to example 1, difference is by liquid-solid ratio (mL/g) 100:1, and levigate red mud is mixed with citric acid solution, surveys CO
2Absorptive capacity be 33.26%.
Embodiment 6
With reference to example 5, difference is that the acidleach temperature is 60 ℃, surveys CO
2Absorptive capacity be 38.56%.
Embodiment 7
With reference to example 6, difference is to carry out 30 circulations to absorb, and surveys CO
2Absorptive capacity be 35.62%.
Embodiment 8
Use egg shell powder (untreated) and undope red mud as a comparison case, carrying out CO
2The circulation absorbability detects: be placed in thermogravimetric analyzer, at N
2Heating rate with 20K/min in atmosphere is warmed up to 750 ℃ of adsorption temps, then under adsorption temp, passes into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 20 circulations and absorbing, survey CO
2Absorptive capacity be 15.01%.
Embodiment 9
At first respectively by red mud and egg shell in ball mill after ball milling 3h, after 60 mesh sieves, then by liquid-solid ratio (mL/g) 20:1, the citric acid solution that is 2wt% by levigate red mud and mass concentration carries out acidleach 6h under 20 ℃, red mud after acidleach mixes with the egg shell after 900 ℃ of calcinings, and wherein the quality of red mud accounts for 5wt%, then mixture is placed in to mortar and adds water and be ground to abundant mixing, dry 2h under 80 ℃, obtain high temperature calcium base CO again
2Absorbing material.
To above-mentioned high temperature calcium base CO
2When the adsorption capacity of carrying out absorbing material detects, be through the following step: by high temperature calcium base CO
2Absorbing material is placed in thermogravimetric analyzer, at N
2Heating rate with 20K/min in atmosphere is warmed up to 600 ℃ of adsorption temps, then under adsorption temp, passes into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 25 circulations and absorbing, survey CO
2Absorptive capacity be 28.06%.
Embodiment 10
At first respectively by red mud and egg shell in ball mill after ball milling 4h, after 80 mesh sieves, then by liquid-solid ratio (mL/g) 80:1, the citric acid solution that is 12wt% by levigate red mud and mass concentration carries out acidleach 2h under 40 ℃, red mud after acidleach mixes with the egg shell powder, and wherein the quality of red mud accounts for 20wt%, then mixture is placed in to mortar and adds water and be ground to abundant mixing, dry 2h under 80 ℃, obtain high temperature calcium base CO again
2Absorbing material.
To above-mentioned high temperature calcium base CO
2When the adsorption capacity of carrying out absorbing material detects, be through the following step: by high temperature calcium base CO
2Absorbing material is placed in thermogravimetric analyzer, at N
2Heating rate with 20K/min in atmosphere is warmed up to 850 ℃ of adsorption temps, then under adsorption temp, passes into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 30 circulations and absorbing, survey CO
2Absorptive capacity be 36.92%.
Claims (4)
1. a high temperature calcium base CO
2The preparation method of absorbing material is characterized in that through following each step:
At first respectively by red mud and egg shell in ball mill after ball milling 2～4h, after 40～80 mesh sieves, then by liquid-solid ratio (mL/g) 20～100:1, the citric acid solution that is 2～14wt% by levigate red mud and mass concentration carries out acidleach 2～6h under 20～60 ℃, red mud after acidleach mixes with egg shell, and wherein the quality of red mud accounts for 5～20wt%, then mixture is added to water and is ground to abundant mixing, dry 2h under 80 ℃, obtain high temperature calcium base CO again
2Absorbing material.
2. high temperature calcium base CO according to claim 1
2The preparation method of absorbing material is characterized in that: described egg shell is powder or the egg shell after 900 ℃ of calcinings of egg shell.
3. high temperature calcium base CO according to claim 1 and 2
2The preparation method of absorbing material is characterized in that: gained high temperature calcium base CO
2Absorbing material, when carrying out the adsorption capacity detection, is through the following step: by high temperature calcium base CO
2Absorbing material is placed in thermogravimetric analyzer, at N
2Be warmed up to 600～850 ℃ of adsorption temps in atmosphere, then under adsorption temp, pass into CO
2And N
2Mist adsorbed 10min, CO wherein
2And N
2Volume ratio be 1:1, then at 100%N
2Under carry out desorption 10min, after carrying out 20～30 circulations and absorbing, survey CO
2Absorptive capacity.
4. high temperature calcium base CO according to claim 3
2The preparation method of absorbing material is characterized in that: described intensification is that the heating rate with 20K/min is heated up.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096472A (en) * | 2014-06-27 | 2014-10-15 | 华中科技大学 | Carbon dioxide/sulfur dioxide calcium-based sorbent and preparation method thereof |
| CN104971690A (en) * | 2015-06-15 | 2015-10-14 | 昆明理工大学 | Method for preparing high-temperature CO2 calcium-based adsorbent from papermaking white mud |
| CN108704627A (en) * | 2018-05-07 | 2018-10-26 | 湖南城市学院 | A kind of CO absorption2Solid material TSCD-Zr preparation and method of modifying |
| CN109012008A (en) * | 2018-07-27 | 2018-12-18 | 昆明理工大学 | It is a kind of to prepare calcium base CO using the doping of rare earth waste2The method of adsorbent |
| CN109395571A (en) * | 2018-12-06 | 2019-03-01 | 浙江工业大学 | A method of resistance to carbonating calcium-base absorbing agent is prepared using sol-gal process |
| CN113512409A (en) * | 2021-07-07 | 2021-10-19 | 中国科学院工程热物理研究所 | Method for preparing porous calcium-based material by using eggshells and application of porous calcium-based material in thermochemical energy storage |
| CN113856617A (en) * | 2021-10-08 | 2021-12-31 | 山西大学 | Preparation method of calcium-based carbon dioxide adsorbent |
| CN114522522A (en) * | 2022-01-29 | 2022-05-24 | 武汉理工大学 | Has CO2Calcium-aluminum-based solid waste carrier material with efficient circulating and trapping functions and preparation method thereof |
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| CN104096472A (en) * | 2014-06-27 | 2014-10-15 | 华中科技大学 | Carbon dioxide/sulfur dioxide calcium-based sorbent and preparation method thereof |
| CN104096472B (en) * | 2014-06-27 | 2016-04-13 | 华中科技大学 | A kind of carbon dioxide/sulfur dioxide calcium-base absorbing agent and preparation method thereof |
| CN104971690A (en) * | 2015-06-15 | 2015-10-14 | 昆明理工大学 | Method for preparing high-temperature CO2 calcium-based adsorbent from papermaking white mud |
| CN108704627B (en) * | 2018-05-07 | 2021-04-16 | 湖南城市学院 | Adsorb CO2Preparation and modification method of solid material TSCD-Zr |
| CN108704627A (en) * | 2018-05-07 | 2018-10-26 | 湖南城市学院 | A kind of CO absorption2Solid material TSCD-Zr preparation and method of modifying |
| CN109012008A (en) * | 2018-07-27 | 2018-12-18 | 昆明理工大学 | It is a kind of to prepare calcium base CO using the doping of rare earth waste2The method of adsorbent |
| CN109012008B (en) * | 2018-07-27 | 2021-06-18 | 昆明理工大学 | Preparation of calcium-based CO by doping rare earth waste2Method for producing adsorbent |
| CN109395571A (en) * | 2018-12-06 | 2019-03-01 | 浙江工业大学 | A method of resistance to carbonating calcium-base absorbing agent is prepared using sol-gal process |
| CN113512409A (en) * | 2021-07-07 | 2021-10-19 | 中国科学院工程热物理研究所 | Method for preparing porous calcium-based material by using eggshells and application of porous calcium-based material in thermochemical energy storage |
| CN113512409B (en) * | 2021-07-07 | 2023-02-03 | 中国科学院工程热物理研究所 | Method for preparing porous calcium-based material by using eggshells and application of porous calcium-based material in thermochemical energy storage |
| CN113856617A (en) * | 2021-10-08 | 2021-12-31 | 山西大学 | Preparation method of calcium-based carbon dioxide adsorbent |
| CN114522522A (en) * | 2022-01-29 | 2022-05-24 | 武汉理工大学 | Has CO2Calcium-aluminum-based solid waste carrier material with efficient circulating and trapping functions and preparation method thereof |
| CN115594380A (en) * | 2022-10-26 | 2023-01-13 | 中铝环保节能集团有限公司（Cn） | Hydrogen sulfide removing agent and preparation method thereof |
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