CN103418336B - 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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- 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
- 238000010521 absorption reaction Methods 0.000 claims description 25
- 238000001179 sorption measurement Methods 0.000 claims description 17
- 125000004122 cyclic group Chemical group 0.000 claims description 16
- 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
- 238000000034 method Methods 0.000 abstract description 17
- 239000002699 waste material Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000002386 leaching Methods 0.000 abstract description 2
- 239000002994 raw material Substances 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
- 238000012216 screening Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 11
- 239000000292 calcium oxide Substances 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 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
- 239000002250 absorbent Substances 0.000 description 4
- 230000002745 absorbent Effects 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
- 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
- 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
- -1 building Substances 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
- 230000003247 decreasing effect Effects 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
- 238000002474 experimental method Methods 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
- 238000004519 manufacturing process Methods 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
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- 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 take egg shell as the high temperature calcium base CO of calcium source doping red mud
2the preparation method of absorbing material, belongs to technical field of carbon dioxide treatment.
Background technology
The contaminative waste residue of discharging when red mud is aluminium industry extraction aluminium oxide, average often produces 1 ton of aluminium oxide, produce 1 ~ 2 ton of red mud, is generally be deposited in stack field or low-lying place at present to the process of red mud, take a large amount of soil, also surrounding environment is polluted.Its composition is different with raw ore composition and aluminium method processed difference, and main component is Al
2o
3, CaCO
3and SiO
2, also have a small amount of magnesium, iron, titanyl compound etc.Mainly fire clay, building, cement ingredient, ceramic tile etc. are used as in industry.At CaO base CO
2absorbing material aspect, has research to claim doped with Al wherein
2o
3the cyclic absorption performance of CaO base absorbant can be improved, and use containing Al
2o
3red mud not only reduce cost and solve the problem of red mud process, reach the object 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 the arch-criminal of greenhouse effects to be exactly CO
2.China along with the quickening of process of industrialization, CO
2discharge capacity be growing on and on.Due to CO in air
2the continuous increase of isothermal chamber gas content and cause greenhouse effects fairly obvious, directly causes the change of weather.Greenhouse gases (GHG) comprise carbon dioxide (CO
2), methane (CH
4), nitrous oxide (N
2o), hydrofluorocarbons (HFCs), perfluocarbon (PFCs), sulfur hexafluoride (SF
6) 6 kinds, wherein to climate change effect maximum be CO
2, its warming effect produced accounts for 63% of the total warming effect of all greenhouse gases, and has the phase that retains in an atmosphere very long feature.In addition, CO
2also have very large impact to marine ecology, ocean almost absorbs the CO of mankind's discharge
2half, these CO
2increase the acidity of ocean, injure some halobiontic existence.CO
2main source be fossil fuel burning produce, therefore find a kind of suitable material to absorb high temperature furnace discharge CO
2there is important theory significance.
The CO of current most study
2high temperature sorbent mainly concentrates on lithium base and calcium base pottery.Lithium-based ceramic cost is higher, and at repeatedly cyclic absorption CO
2process in can cause the loss of elemental lithium.Compared with lithium-based ceramic, calcium-based materials has higher absorptive capacity and absorption rate, but in repeatedly cyclic absorption process CO
2absorptive capacity declines very fast.Therefore, many researchers attempt the cyclic absorption performance being improved calcium base absorbing material by doping.Some domestic and international researchers find, doped with Al in CaO
2o
3be conducive to the cyclic absorption performance improving calcium-based materials.Preparation doped with Al
2o
3caO base absorbant mainly 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, be usually applicable to laboratory research.2) different aluminum source doping, as pure alumina, aluminate cement, kaolin, clay etc.
Up to now, there is not yet with egg shell is the CaO base high temperature CO of calcium source doping red mud
2the report of the patent of invention, Research Literature etc. of absorbing material.
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, obtained egg shell is as the CaO base high temperature CO of the cyclic absorption excellent performance of calcium source doping red mud
2absorbing material, thus reduce the preparation cost of calcium-based materials, and provide a new way for the utilization of solid waste red mud.
The present invention is realized by following technical proposal: a kind of high temperature calcium base CO
2the preparation method of absorbing material, through following each step:
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 being 2 ~ 14wt% by levigate red mud and mass concentration carries out acidleach 2 ~ 6h at 20 ~ 60 DEG C, red mud after acidleach mixes with egg shell, and wherein the quality of red mud accounts for 5 ~ 20wt%, and then being added water by mixture is ground to abundant mixing, dry 2h at 80 DEG C again, namely obtains high temperature calcium base CO
2absorbing material.
Described egg shell is the powder of egg shell or the egg shell after 900 DEG C of calcinings.
To above-mentioned high temperature calcium base CO
2when 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 adsorption temp 600 ~ 850 DEG C in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 20 ~ 30 cyclic absorption, survey CO
2absorptive capacity.
Described intensification heats up with the heating rate of 20K/min.
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 absorption capacity be 78.6%.
Bayer process aluminium metallurgy is by adding NaOH solution in bauxite, makes the alumina leaching in bauxite form sodium aluminate solution and realizes being separated of aluminium and other impurity.Bayer process red mud is in alkalescence and sodium content is higher, and experiment proves 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 the sodium in citric acid and red mud reacts and generates natrium citricum and discharge by pickle liquor.Citric acid is organic acid, can decompose completely not have other element and bring the absorbent properties affecting follow-up preparation in high temperature.Cyclic absorption excellent in stability of the present invention is because calcium oxide and the aluminium oxide after processing in red mud react in pyroprocess generate mayenite (Ca
12al
14o
33).At cyclic absorption CO
2in process, the cyclical stability that it can prevent absorbent from sintering in high temperature and cause porosity and specific area to reduce and cause reduces.
CaO base CO
2absorbing material becomes study hotspot with its higher absorptive capacity, lower cost.And the inert element that adulterates (compound) can improve the cyclic absorption CO of CaO sill
2performance.Be considered at present be conducive to improving CO
2the inert element (compound) of cycle performance comprises Mn, La, Zr, Co, MgO, Al
2o
3deng.The aluminium source adulterated is generally pure Al
2o
3, aluminate cement, kaolin, clay etc.Shi Chan aluminium big country of China, the annual red mud amount produced is surprising, to its utilization not only can decreasing pollution can also improve effects.Obtain the excellent high temperature of cycle performance and absorb CO after acidleach process of the present invention with after egg shell mechanical mixture
2porous CaO sill, both obtained the excellent CO of cycle performance
2absorbing material reduces the discharge of greenhouse gases, again reduces the cost of absorbing material, and process make use of mining slag, reaches the object 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 low raw-material cost selected by the present invention, preparation technology is simple, can reduce CO
2discharge, reclaim carbon resource, be easy to realize suitability for industrialized production, and the object of the treatment of wastes with processes of wastes against one another can be reached.
(1) the present invention with mining wastes red mud be aluminium source, with house refuse egg shell for calcium source, prepared the CaO base CO of doping
2absorbing material; Preparation cost is relatively low, simultaneously also opens a new field for the improvement of red mud utilizes.
(2) the present invention is mainly for CO such as power plant
2the industry that discharge capacity is large, at high temperature directly can absorb CO
2, economize energy; Reclaim carbon resource simultaneously, reduce CO
2discharge, thus play the effect of protection of the environment.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but scope is not limited to described content.
Embodiment 1
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 being 8wt% by levigate red mud and mass concentration carries out acidleach 4h at 40 DEG C, red mud after acidleach mixes through the egg shell of deionized water washing after calcining through 900 DEG C, and wherein the quality of red mud accounts for 10wt%, then mixture is placed in mortar and adds water and be ground to abundant mixing, dry 2h at 80 DEG C again, namely obtains high temperature calcium base CO
2absorbing material.
To above-mentioned high temperature calcium base CO
2when 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 adsorption temp 750 DEG C with the heating rate of 20K/min in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 20 cyclic absorption, survey CO
2absorptive capacity be 27.8%.
Embodiment 2
With reference to example 1, difference is red mud when mixing with egg shell, and the quality of red mud accounts for 15wt%, survey CO
2absorptive capacity be 26.24%.
Embodiment 3
With reference to example 1, difference is the mass concentration of citric acid solution is 14wt%, surveys CO
2absorptive capacity be 27.07%.
Embodiment 4
With reference to example 1, the powder of difference to be egg shell be 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, is mixed by levigate red mud with citric acid solution, surveys CO
2absorptive capacity be 33.26%.
Embodiment 6
With reference to example 5, difference is acidleach temperature is 60 DEG C, surveys CO
2absorptive capacity be 38.56%.
Embodiment 7
With reference to example 6, difference carries out 30 cyclic absorption, 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
2cyclic absorption ability detects: be placed in thermogravimetric analyzer, at N
2be warmed up to adsorption temp 750 DEG C with the heating rate of 20K/min in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 20 cyclic absorption, survey CO
2absorptive capacity be 15.01%.
Embodiment 9
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 being 2wt% by levigate red mud and mass concentration carries out acidleach 6h at 20 DEG C, the egg shell of red mud after acidleach after calcining through 900 DEG C mixes, and wherein the quality of red mud accounts for 5wt%, then mixture is placed in mortar and adds water and be ground to abundant mixing, dry 2h at 80 DEG C again, namely obtains high temperature calcium base CO
2absorbing material.
To above-mentioned high temperature calcium base CO
2when 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 adsorption temp 600 DEG C with the heating rate of 20K/min in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 25 cyclic absorption, survey CO
2absorptive capacity be 28.06%.
Embodiment 10
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 being 12wt% by levigate red mud and mass concentration carries out acidleach 2h at 40 DEG C, red mud after acidleach mixes with egg shell powder, and wherein the quality of red mud accounts for 20wt%, then mixture is placed in mortar and adds water and be ground to abundant mixing, dry 2h at 80 DEG C again, namely obtains high temperature calcium base CO
2absorbing material.
To above-mentioned high temperature calcium base CO
2when 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 adsorption temp 850 DEG C with the heating rate of 20K/min in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 30 cyclic absorption, 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:
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 being 2 ~ 14wt% by levigate red mud and mass concentration carries out acidleach 2 ~ 6h at 20 ~ 60 DEG C, red mud after acidleach mixes with egg shell, and wherein the quality of red mud accounts for 5 ~ 20wt%, and then being added water by mixture is ground to abundant mixing, dry 2h at 80 DEG C again, namely obtains high temperature calcium base CO
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 the powder of egg shell or the egg shell after 900 DEG C of calcinings.
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 adsorption capacity and detecting, is through the following step: by high temperature calcium base CO
2absorbing material is placed in thermogravimetric analyzer, at N
2be warmed up to adsorption temp 600 ~ 850 DEG C in atmosphere, then under adsorption temp, pass into CO
2and N
2mist carry out absorption 10min, wherein CO
2and N
2volume ratio be 1:1, then at 100%N
2under carry out desorption 10min, after carrying out 20 ~ 30 cyclic absorption, 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 heats up with the heating rate of 20K/min.
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| 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 |
| 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 |
| 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 |
| CN115594380B (en) * | 2022-10-26 | 2024-08-20 | 中铝环保节能集团有限公司 | Hydrogen sulfide removing agent and preparation method thereof |
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| CN102357342A (en) * | 2011-08-04 | 2012-02-22 | 东南大学 | Method for preparing attapulgite clay-modified calcium-based carbon dioxide absorbent |
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| CN102000496A (en) * | 2010-11-26 | 2011-04-06 | 昆明理工大学 | Method for preparing carbon dioxide high-temperature absorbent |
| CN102357342A (en) * | 2011-08-04 | 2012-02-22 | 东南大学 | Method for preparing attapulgite clay-modified calcium-based carbon dioxide absorbent |
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| "利用赤泥捕获CO2反应特性";伊元荣等;《化工学报》;20110930;第62卷(第9期);第2635-2642页 * |
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