CN104971690A - Method for preparing high-temperature CO2 calcium-based adsorbent from papermaking white mud - Google Patents
Method for preparing high-temperature CO2 calcium-based adsorbent from papermaking white mud Download PDFInfo
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- CN104971690A CN104971690A CN201510324025.1A CN201510324025A CN104971690A CN 104971690 A CN104971690 A CN 104971690A CN 201510324025 A CN201510324025 A CN 201510324025A CN 104971690 A CN104971690 A CN 104971690A
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- 239000003463 adsorbent Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000011575 calcium Substances 0.000 title claims abstract description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 16
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 claims abstract 2
- 238000012986 modification Methods 0.000 claims abstract 2
- 241000533901 Narcissus papyraceus Species 0.000 claims description 45
- 239000010802 sludge Substances 0.000 claims description 45
- 239000000047 product Substances 0.000 claims description 21
- 238000001354 calcination Methods 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 18
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 16
- 229930006000 Sucrose Natural products 0.000 claims description 16
- 239000005720 sucrose Substances 0.000 claims description 16
- 238000003795 desorption Methods 0.000 claims description 14
- 239000012298 atmosphere Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 10
- 239000000320 mechanical mixture Substances 0.000 claims description 10
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002019 doping agent Substances 0.000 abstract 2
- 239000002585 base Substances 0.000 description 35
- 230000004087 circulation Effects 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000004927 clay Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009993 causticizing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 229910004762 CaSiO Inorganic materials 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DSLZVSRJTYRBFB-LLEIAEIESA-N D-glucaric acid Chemical compound OC(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O DSLZVSRJTYRBFB-LLEIAEIESA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 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 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009866 aluminium metallurgy Methods 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000003278 egg shell Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Abstract
The invention discloses a method for preparing a high-temperature CO2 calcium-based adsorbent from papermaking waste white mud. The method comprises carrying out modification on papermaking waste white mud as a calcium source by calcium source purification, aluminum doping and precalcination, wherein the doping agent is one of bauxite tailings and red mud. Compared with the original white mud sample, the modified white mud has higher CO2 cyclic adsorption performances. The method utilizes waste as a calcium source and a doping agent. The method has simple processes, a low cost and strong operationality and can be widely used for CO2 seal storage and trapping.
Description
Technical field
The present invention relates to a kind of preparation method and application of high temperature Ca-base adsorbent, belong to CO
2high temperature adsorption and separation field.
Background technology
Greenhouse effects cause huge threat to environment for human survival, CO
2be the arch-criminal causing greenhouse effects, a large amount of burnings of fossil fuel cause CO
2the main cause of excessive emissions.For this present situation, need to seek to be applicable to catching CO in industrial tail gas
2isolation technics and material.The temperature of plant tail gas is higher, and high temperature adsorption is separated and can improves the utilization rate of heat energy, the CO of the method therefore selecting Ca-base adsorbent (CaO) Cyclic Carbonation/calcining separation under the high temperature conditions in adsorbing separation industrial tail gas
2.
CaO is cheap and easy to get and adsorption capacity is the highest, and its theoretical adsorbance can reach 78.6wt% (gCO
2/ g CaO), therefore, select Ca-base adsorbent adsorbing separation CO
2be considered to one of method of most practical prospect.But Ca-base adsorbent itself also exists a lot of deficiency, on the one hand, Ca-base adsorbent causes specific area to decline through repeatedly calcining generation sintering phenomenon, and circulation absorption performance reduces; On the other hand, a certain amount of SO is contained in industrial waste gas
2, CaO and SO
2the CaSO that reaction generates
4cannot regenerate under the condition that carbonating/calcining is separated, CaO effective content be reduced, CO
2circulation absorption hydraulic performance decline.
CaO source is comparatively wide, and use the high discarded object of calcic to make the object that Ca-base adsorbent can reach the treatment of wastes with processes of wastes against one another, common calcium base discarded object has carbide slag, paper white sludge, egg shell and slag etc., and the main calcium component of these calcium base solid waste has Ca (OH)
2, CaCO
3or the silicate CaSiO of calcium
3deng." calcium " in this patent derives from the white clay produced in the causticizing reaction alkali recovery process of paper mill, and producing green liquor main component in paper pulp preparation process is Na
2cO
3, CaO is added green liquor and carry out causticizing reaction recovery NaOH, reaction equation is as follows:
Na
2CO
3+CaO+H
2O→CaCO
3+2NaOH
Be CaCO by the main component of the known white clay of reaction equation
3, but also can containing a small amount of Ca (OH) when CaO is excessive
2.In addition, also have in white clay that some are siliceous, the impurity of aluminium, iron, magnesium, potassium and sodium.Al
2o
3(Huichao Chen, 2013), MgO(Francesca Micheli, 2014) easy and CaO at high temperature forms the calcified material (claiming " skeleton impurity ") of Heat stability is good below, this compounds provides the structure of skeletal support adsorbent for CaO, makes it after repeatedly Cyclic Carbonation/calcining, still keep higher adsorbance.Therefore, paper white sludge is selected to catch CO as separation
2high temperature Ca-base adsorbent there is certain actual application value.
Paper white sludge former state is after 15 Cyclic Carbonation/calcinings, and cycle performance declines rapidly, and the 15th conversion and cycle rate have dropped 38.5% compared with first circulation, is only 14.2%.The reason of analysis cycle hydraulic performance decline, on the one hand, containing to the disadvantageous impurity of circulation (Na, K etc.) in white clay, therefore considers to purify to the CaO in paper white sludge.Select sucrose method purification calcium oxide in the present invention, sucrose method is usually used in measuring the active calcium ion content in ore.Calcium oxide solubility in water lower (1.31g/L, 20 DEG C), after adding sucrose, calcium oxide can form the larger lime saccharate of solubility with sucrose, and the efficient oxidation calcium in white clay can be made like this from extracting (K. Labgairi, 2011).
The another aspect that cycle performance declines is because in white clay, " skeleton impurity " content is lower, therefore, considers to add material containing " skeleton impurity " to improve circulation absorption performance." the skeleton impurity " that uses in this patent is red mud, bauxite one wherein.China's aluminium output is high, the mine tailing waste residue substantial amounts that aluminium metallurgy produces, bauxite gangue is mainly used in building trade at present, and Bayer process red mud also unrealized large-scale application, therefore, consider in this patent to use above two kinds of waste residues to improve the circulation absorption performance of paper white sludge to reach the object of the treatment of wastes with processes of wastes against one another as aluminium source.Have no the Ca-base adsorbent be combined into white clay and bauxite (or red mud) at present.Its preparation method is simple, be easy to operation, with low cost, easily realize heavy industrialization application, have certain actual application value.
Summary of the invention
The invention provides one utilizes paper mill waste paper white sludge to prepare high temperature CO
2the method of Ca-base adsorbent, the method does calcium source with paper white sludge, the content of objectionable impurities in white clay is reduced by method of modifying such as calcium purification, aluminium doping and precalcinings, raising can form the aluminium source content of high-temperature stable skeleton structure, this invention exploits a kind of technique simple, be easy to operate, high temperature CO cheap and easy to get
2ca-base adsorbent.
Said method specifically comprises the following steps:
(1) 760 DEG C calcining 4h decompose paper white sludge generate CaO(because of main component in white clay be CaCO
3);
(2) take after gained catabolite and sucrose solution are uniformly mixed in step (1), by mixed liquor filtration, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying in proportion;
(4) namely the precalcining of step (3) dried product high temperature aerobic is obtained high temperature calcium base CO
2adsorbent.
Described adulterant is the one in bauxite, red mud.
Described sucrose solution concentration is 0.4 ~ 0.8mol/L.
The mass ratio of described paper white sludge and adulterant is 19:1 ~ 3:1.
Described High Temperature Pre calcining heat is 700 ~ 900 DEG C, and calcination time is 0.5 ~ 5h.
Another object of the present invention is that the high temperature Ca-base adsorbent that said method is obtained is applied to CO
2circulation absorption field in, its adsorption temp is 760 ~ 900 DEG C, adsorption time is 5 ~ 10min, absorption atmosphere is 15 ~ 50%CO
2, all the other are N
2atmosphere; Desorption temperature is 760 ~ 900 DEG C, desorption time is 5 ~ 10min, desorption atmosphere is 100%N
2atmosphere.
The high temperature Ca-base adsorbent that the present invention obtains is to CO
2adsorption efficiency be up to 65.7%, through 15 times circulation after adsorption efficiency still reach 51.3%.
Compare with existing product and technology, the present invention has the following advantages or good effect:
1, the present invention is mainly for CO
2the industry that discharge capacity is large, can CO directly in absorption tail gas
2, reduce CO
2discharge the adverse effect that environment is brought;
2, Appropriate application discarded object, reaches the object of the treatment of wastes with processes of wastes against one another, and compared with other white clay CO
2adsorbent effect is significantly improved;
3, the present invention only adopts mixing and high-temperature calcination namely to obtain target affinity agent, and its preparation method is simple, convenient operation, with low cost, easily realizes heavy industrialization application.
Accompanying drawing explanation
Fig. 1 is the TG figure of paper white sludge former state;
Fig. 2 is calcium base CO in case study on implementation 3
2the SEM figure of adsorbent, (a) paper white sludge former state; B () is through the white clay-bauxite gangue adsorbent of precalcining;
Fig. 3 is the CO of gained Ca-base adsorbent in paper white sludge former state and case study on implementation 3
2circulation absorption curve.
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: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.8 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and bauxite gangue is 4:1;
(4) products therefrom in step (3) is calcined 2h at 700 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 760 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 5min (100% N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 31.8%.
Embodiment 2: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.6 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and bauxite gangue is 19:1;
(4) products therefrom in step (3) is calcined 30min at 900 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 900 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 10min (100% N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 36.2%.
Embodiment 3: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.4 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and bauxite gangue is 6:1;
(4) products therefrom in step (3) is calcined 5h at 800 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 760 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 5min (100% N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be that 51.3%(is shown in Fig. 1,2,3).
Embodiment 4: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.5 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and red mud is 10:1;
(4) products therefrom in step (3) is calcined 3h at 900 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 760 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 5min (100% N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 32.1%.
Embodiment 5: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.4 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and red mud is 4:1;
(4) products therefrom in step (3) is calcined 5h at 750 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 900 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 5min (CO
2: N
2=1), desorption 5min (100%N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 30.7%.
Embodiment 6: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.8 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and bauxite gangue is 6:1;
(4) products therefrom in step (3) is calcined 5h at 700 DEG C and obtain high temperature CO
2ca-base adsorbent; The Ca-base adsorbent that 5h obtains doping state is calcined at 700 DEG C.Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 900 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 5min (100%N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 43.8%.
Embodiment 7: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) high temperature 760 DEG C calcining 4h decomposes paper white sludge generation CaO;
(2) take after the catabolite of step (1) gained and 0.4 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and red mud is 10:1;
(4) products therefrom in step (3) is calcined 2h at 800 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 760 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 5min (CO
2: N
2=1), desorption 10min (100%N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 34.6%.
Embodiment 8: prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, concrete operations are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and 0.8 mol/L sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying; Wherein the mass ratio of paper white sludge and red mud is 19:1;
(4) products therefrom in step (3) is calcined 0.5h at 900 DEG C and obtain high temperature CO
2ca-base adsorbent; Obtained adsorbent is put into thermogravimetric analyzer, at N
2be elevated to 760 DEG C (adsorption temps) from 40 DEG C with the heating rate of 20K/min in atmosphere, under constant temperature, adsorb 10min (CO
2: N
2=1), desorption 5min (100%N
2) circulation absorption CO
2, after 15 circulations, obtain CO
2conversion ratio be 41.8%.
Claims (6)
1. prepare high temperature CO with paper white sludge for one kind
2the method of Ca-base adsorbent, is characterized in that: carry out modification by purification calcium source, adulterated al source and precalcining to Ca-base adsorbent, concrete steps are as follows:
(1) 760 DEG C of calcining 4h decomposes paper white sludge and generates CaO;
(2) take after the catabolite of step (1) gained and sucrose solution be uniformly mixed, mixed liquor is filtered, and gained filtrate is dried to constant weight;
(3) products therefrom in step (2) and adulterant are carried out mechanical mixture, drying;
(4) products therefrom in step (3) is carried out High Temperature Pre calcine and obtain high temperature CO
2ca-base adsorbent.
2. according to claim 1ly prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, is characterized in that: sucrose solution concentration is 0.4 ~ 0.8mol/L.
3. according to claim 1 and 2ly prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, is characterized in that: adulterant is the one in bauxite gangue, red mud.
4. according to claim 3ly prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, is characterized in that: the mass ratio of paper white sludge and adulterant is 19:1 ~ 3:1.
5. according to claim 1ly prepare high temperature CO with paper white sludge
2the method of Ca-base adsorbent, is characterized in that: High Temperature Pre calcining heat is 700 ~ 900 DEG C, and calcination time is 0.5 ~ 5h.
6. according to any one of claim 1-5, prepare high temperature CO with paper white sludge
2the high temperature CO that the method for Ca-base adsorbent is obtained
2ca-base adsorbent is at CO
2circulation absorption in application, it is characterized in that: the adsorption temp of this adsorbent is 760 ~ 900 DEG C, adsorption time is 5 ~ 10min, absorption atmosphere is 15 ~ 50%CO
2, all the other are N
2atmosphere; Desorption temperature is 760 ~ 900 DEG C, desorption time is 5 ~ 10min, desorption atmosphere is 100%N
2atmosphere.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106582491A (en) * | 2016-12-13 | 2017-04-26 | 昆明理工大学 | Preparation method of silicon nitride-doped high-temperature CO2 calcium-based adsorbent |
| CN107029660A (en) * | 2017-05-26 | 2017-08-11 | 中国矿业大学 | A kind of high temperature CO2The method of preparation and use of modified calcium-based adsorbent |
| CN111282543A (en) * | 2020-03-04 | 2020-06-16 | 中南大学 | Silicate tailing-based porous material and preparation method and application thereof |
| CN114213146A (en) * | 2022-01-18 | 2022-03-22 | 中国建筑材料工业地质勘查中心宁夏总队 | Preparation and adsorption of CO by using coal slime as raw material2Key technology for paving green building material by using road surface |
| CN114768753A (en) * | 2022-04-26 | 2022-07-22 | 昆明理工大学 | Red mud-based CO2Preparation method and application of adsorption and desorption agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718373A (en) * | 2011-11-01 | 2012-10-10 | 山东大学 | Method for treating white mud produced by papermaking and use of the white mud treated by the method in removal of CO2 in tail flue gas from coal-fired boiler |
| CN102730732A (en) * | 2012-06-21 | 2012-10-17 | 昆明理工大学 | Technology for purifying calcium oxide in phosphogypsum decomposition resides through sucrose method |
| CN103418336A (en) * | 2013-08-20 | 2013-12-04 | 昆明理工大学 | Preparation method of high-temperature calcium-based CO2 absorbing material |
| CN103657582A (en) * | 2012-09-13 | 2014-03-26 | 华东理工大学 | Improved calcium-oxide-based CO2 adsorbent and preparation method thereof |
-
2015
- 2015-06-15 CN CN201510324025.1A patent/CN104971690A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718373A (en) * | 2011-11-01 | 2012-10-10 | 山东大学 | Method for treating white mud produced by papermaking and use of the white mud treated by the method in removal of CO2 in tail flue gas from coal-fired boiler |
| CN102730732A (en) * | 2012-06-21 | 2012-10-17 | 昆明理工大学 | Technology for purifying calcium oxide in phosphogypsum decomposition resides through sucrose method |
| CN103657582A (en) * | 2012-09-13 | 2014-03-26 | 华东理工大学 | Improved calcium-oxide-based CO2 adsorbent and preparation method thereof |
| CN103418336A (en) * | 2013-08-20 | 2013-12-04 | 昆明理工大学 | Preparation method of high-temperature calcium-based CO2 absorbing material |
Non-Patent Citations (1)
| Title |
|---|
| YICHENG HU ET AL.: "Development of CaO-based sorbent doped with mineral rejects–bauxite-tailings in cyclic CO2 capture", 《JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106582491A (en) * | 2016-12-13 | 2017-04-26 | 昆明理工大学 | Preparation method of silicon nitride-doped high-temperature CO2 calcium-based adsorbent |
| CN106582491B (en) * | 2016-12-13 | 2019-06-11 | 昆明理工大学 | A kind of high temperature CO of doped silicon nitride2The preparation method of Ca-base adsorbent |
| CN107029660A (en) * | 2017-05-26 | 2017-08-11 | 中国矿业大学 | A kind of high temperature CO2The method of preparation and use of modified calcium-based adsorbent |
| CN111282543A (en) * | 2020-03-04 | 2020-06-16 | 中南大学 | Silicate tailing-based porous material and preparation method and application thereof |
| CN114213146A (en) * | 2022-01-18 | 2022-03-22 | 中国建筑材料工业地质勘查中心宁夏总队 | Preparation and adsorption of CO by using coal slime as raw material2Key technology for paving green building material by using road surface |
| CN114213146B (en) * | 2022-01-18 | 2023-08-11 | 中国建筑材料工业地质勘查中心宁夏总队 | CO adsorption prepared by using coal slime as raw material 2 Preparation method of green building material paved by pavement |
| CN114768753A (en) * | 2022-04-26 | 2022-07-22 | 昆明理工大学 | Red mud-based CO2Preparation method and application of adsorption and desorption agent |
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