CN102517122B - Method for preparing chemical-looping combustion oxygen carrier by use of red mud - Google Patents
Method for preparing chemical-looping combustion oxygen carrier by use of red mud Download PDFInfo
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- CN102517122B CN102517122B CN201110329313.8A CN201110329313A CN102517122B CN 102517122 B CN102517122 B CN 102517122B CN 201110329313 A CN201110329313 A CN 201110329313A CN 102517122 B CN102517122 B CN 102517122B
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- China
- Prior art keywords
- red mud
- carrier
- active component
- gained
- oxygen carrier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000001301 oxygen Substances 0.000 title claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 title abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910010413 TiO 2 Inorganic materials 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 238000004131 Bayer process Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000005431 greenhouse gas Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910017771 LaFeO Inorganic materials 0.000 description 2
- 238000009866 aluminium metallurgy Methods 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention brings forward a method for preparing a chemical-looping combustion oxygen carrier by the use of red mud, comprising the following steps of: drying red mud, adding the red mud into a carrier, an auxiliary agent and an active component, uniformly mixing, followed by conventional molding, and roasting to obtain the chemical-looping combustion oxygen carrier. By the adoption of the method, resource utilization of the red mud is realized, the cost for preparing the oxygen carrier is greatly reduced, a cheap raw material which is easily available is provided for large-scale preparation of the oxygen carrier, and the foundation is laid for the implementation of a chemical-looping combustion technology. With the combination of the chemical-looping combustion technology and the red mud resource, high-efficiency utilization of the resource is realized, the energy utilization efficiency is raised, and technical supports are provided for emission reduction of carbon dioxide.
Description
Technical field
The present invention relates to chemical chain burning technology and red mud resource utilization, be specifically related to a kind of method utilizing red mud preparative chemistry chain burns oxygen carrier, belong to field of energy environment.
Background technology
Earth surface temperature raises, sea level rise, exceedingly odious weather frequently occurs causing the concern of the whole mankind to " greenhouse effects ", CO
2be the main greenhouse gas causing greenhouse effects, be regarded as third generation air pollutants.Along with the continuous propelling of world industry process, use in a large number in human being's production, life activity based on the carbon containing fossil energy of oil, coal, natural gas, broken nature biotechnology circle, the original Carbon balance of atmospheric thermodynamics.
For realizing the sustainable development of human society, be important symbol with Kyoto Protocol, international community is to CO
2reduce discharging and reach common understanding.In December, 2009, " Copenhagen climate change conference " that be intended to discuss Global Green House Gas Emissions Reduction and low-carbon economy is subject to national governments and shows great attention to, and beautiful, Deng state has all made CO to the whole world in the climate change conference of Copenhagen
2concrete quantification reduces discharging promises to undertake.
The main source of the combustion chamber greenhouse gases of fossil fuel, the fossil fuels such as coal, natural gas, oil produce the pernicious gases such as a large amount of carbon dioxide, nitrogen oxide and oxysulfide in combustion, exacerbate atmosphere pollution and global warming.For reducing the discharge of pernicious gas in fuel combustion process, the high-efficiency cleaning that various countries attach great importance to the energy utilizes.
Chemical chain burning technology is a kind of combustion technology that can realize the efficiency utilization of separation and fuel in carbon dioxide, enjoys the concern of various countries researcher in recent years.With Fe
2o
3for the burning chemistry chains carrier of oxygen of chief active species, due to the performance that it is superior, be considered to a kind of carrier of oxygen having very much industrial prospect.But realize Fe
2o
3the large-scale application of-Ji the carrier of oxygen, the technology must finding a kind of cheapness realizes the scale preparation of the carrier of oxygen.
In addition on the one hand, China is as large alumina producing state of the world the 4th, and the red mud of annual discharge is up to millions of tons.As a kind of contaminative waste residue, owing to containing iron oxide (Fe
2o
3) measure greatly, outward appearance is similar to redness of the skin or complexion earth, red mud of thus gaining the name.Also some is brown because of less containing iron oxide, even canescence.In bauxite, aluminium content is high, and adopt Bayer process aluminium metallurgy, the red mud produced claims Bayer process red mud; In bauxite, aluminium content is low, by sintering process or with sintering process and Bayer process associating aluminium metallurgy.Wherein with Fe in Bayer process red mud
2o
3content is the highest.
The chemical composition of red mud
| Red mud kind | Bayer process red mud/% | Red mud from sintering process/% | Combination method red mud/% |
| SiO 2 | 3～20 | 20～23 | 20.0～20.5 |
| CaO | 2～8 | 46～49 | 43.7～46.8 |
| Al 2O 3 | 10～20 | 5～7 | 5.4～7.5 |
| Fe 2O 3 | 30～60 | 7～10 | 6.1～7.5 |
| MgO | — | 1.2～1.6 | — |
| Na 2O | 2～10 | 2.0～2.5 | 2.8～3.0 |
| K 2O | — | 0.2～0.4 | 0.5～0.7 |
| TiO 2 | Trace ~ 10 | 2.5～3.0 | 6.1～7.7 |
| Loss on ignition | 10～15 | 6～10 | — |
The contaminative waste residue of discharging when red mud is aluminium industry extraction aluminium oxide.As large alumina producing state of the world the 4th, the red mud of the annual discharge of China is up to millions of tons.A large amount of red muds can not fully effectively utilize, and large-area stockyard can only be relied on to stack, occupy a large amount of soil, also cause serious pollution to environment.The red mud that the whole world produces every year about 7,000 ten thousand tons, the red mud that China produces every year is more than 3,000 ten thousand tons.The generation of a large amount of red muds causes directly many-sided on the production of the mankind, life and indirectly affects, so reduce output and the harm of red mud to greatest extent, realizes by all kinds of means, the resource of large quantity is extremely urgent.
Summary of the invention
The object of the invention is to utilize the contaminative waste red mud preparative chemistry chain burning carrier of oxygen, realize a large amount of utilizations of red mud, avoid taking a large amount of soil, to environment.
The present invention is realized by following technical proposal: a kind of method utilizing red mud preparative chemistry chain burns oxygen carrier, through following each step:
A. by red mud at temperature 110 ~ 300 DEG C dry 2 ~ 24 hours, to remove moisture;
B. after the drying of steps A gained, add carrier, auxiliary agent and active component in red mud, and mix;
C. step B gained mixture is carried out routine shaping;
D. by the roasting 4 ~ 12 hours at 800 ~ 1000 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
The carrier of described step B is one or more in indifferent oxide, as SiO
2, TiO
2, Al
2o
3, be that 0 ~ 4 ︰ 1 adds carrier by the mass ratio of red mud after carrier and drying.
The auxiliary agent of described step B is NaOH, KOH, Na
2cO
3in one or more, the addition of auxiliary agent be dry after red mud and carrier gross mass 0 ~ 5%.
The active component of described step B is that perovskite oxide is (as LaFeO
3, SrFeO
3, La
0.7sr
0.3feO
3), hexa-aluminate is (as BaFeAl
11o
19, LaFeAl
11o
19, LaNiAl
11o
19), Fe
2o
3, one or more in CuO, NiO, by Fe in active component and red mud
2o
3mass ratio be that 0 ~ 1 ︰ 1 adds active component.
The routine of described step C is shaping is need make spherical, granular or carry out global formation to mixture according to use.
The purity of the carrier of described interpolation, auxiliary agent and active component is technical pure or analyzes pure.
The present invention has the following advantages:
(1) recycling of red mud is achieved;
(2) take red mud as the raw material preparative chemistry chain burning carrier of oxygen, greatly reduce cost prepared by the carrier of oxygen, for carrier of oxygen scale preparation provides a kind of raw material cheap and easy to get, for the enforcement of chemical chain burning technology is laid a good foundation;
(3) chemical chain burning technology is combined with the resource of red mud, achieve resources effective utilization, improve efficiency of energy utilization, for carbon dioxide discharge-reduction provides technical support.
Detailed description of the invention
Illustrate content of the present invention further below in conjunction with embodiment, but these examples do not limit the scope of the invention.
Embodiment 1
Red mud composition used is:
| Composition | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | Na 2O | TiO 2 | Loss on ignition |
| Content/% | 10 | 5 | 15 | 50 | 4 | 1 | 10 |
A. by above-mentioned red mud at temperature 300 DEG C dry 8 hours, to remove moisture;
B. get the dry red mud 1kg of steps A gained, add the Al of 2kg wherein
2o
3, 0.02kg Na
2cO
3, and mix;
C. according to using, step B gained mixture is needed to make granularity that to be 5mm granular;
D. by the roasting 12 hours at 800 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
Embodiment 2
Red mud composition used is:
| Composition | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | Na 2O | TiO 2 | Loss on ignition |
| Content/% | 9 | 5 | 16 | 52 | 3 | 2 | 9 |
A. by above-mentioned red mud at temperature 200 DEG C dry 2 hours, to remove moisture;
B. get the dry red mud 1kg of steps A gained, add the SiO of 4kg wherein
2and TiO
2, by Fe in active component and red mud
2o
3mass ratio be that 1 ︰ 1 adds CuO, and to mix;
C. step B gained mixture is needed to make spherical according to use;
D. by the roasting 8 hours at 900 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
Embodiment 3
Red mud composition used is:
| Composition | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | Na 2O | TiO 2 | Loss on ignition |
| Content/% | 11 | 6 | 13 | 49 | 5 | 1 | 11 |
A. by above-mentioned red mud at temperature 110 DEG C dry 24 hours, to remove moisture;
B. get the dry red mud 1kg of steps A gained, add NaOH and KOH of 0.05kg wherein, by Fe in active component and red mud
2o
3mass ratio be that 0.8 ︰ 1 adds LaFeO
3, SrFeO
3, BaFeAl
11o
19, Fe
2o
3, NiO, and to mix;
C. step B gained mixture is needed to carry out global formation to mixture according to use;
D. by the roasting 4 hours at 1000 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
Embodiment 4
Red mud composition used is:
| Composition | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | Na 2O | TiO 2 | Loss on ignition |
| Content/% | 10 | 5 | 15 | 50 | 4 | 1 | 10 |
A. by above-mentioned red mud at temperature 280 DEG C dry 20 hours, to remove moisture;
B. the dry red mud 1kg of steps A gained is got;
C. dry for step B gained red mud is needed to make granular according to use;
D. by the roasting 5 hours at 850 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
Embodiment 5
Red mud composition used is:
| Composition | SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | Na 2O | TiO 2 | Loss on ignition |
| Content/% | 10 | 5 | 15 | 50 | 4 | 1 | 10 |
A. by above-mentioned red mud at temperature 220 DEG C dry 17 hours, to remove moisture;
B. get the dry red mud 1kg of steps A gained, add the TiO of 1kg wherein
2, 0.01kg NaOH, by Fe in active component and red mud
2o
3mass ratio be that 1 ︰ 1 adds La
0.7sr
0.3feO
3, LaFeAl
11o
19, LaNiAl
11o
19, NiO, and to mix;
C. step B gained mixture is needed to make spherical according to use;
D. by the roasting 7 hours at 950 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
Claims (2)
1. utilize a method for red mud preparative chemistry chain burns oxygen carrier, it is characterized in that through following each step:
A. by red mud at temperature 110 ~ 300 DEG C dry 2 ~ 24 hours, to remove moisture;
B. after the drying of steps A gained, add carrier, auxiliary agent and active component in red mud, and mix, wherein, carrier is one or more in indifferent oxide, is that (0 ~ 4) ︰ 1 adds carrier by the mass ratio of red mud after carrier and drying; Auxiliary agent is NaOH, KOH, Na
2cO
3in one or more, the addition of auxiliary agent be dry after red mud and carrier gross mass 0 ~ 5%; Active component is perovskite oxide, hexa-aluminate, Fe
2o
3, one or more in CuO, NiO, by Fe in active component and red mud
2o
3mass ratio for (0 ~ 1) ︰ 1 adds active component;
C. step B gained mixture is carried out routine shaping;
D. by the roasting 4 ~ 12 hours at 800 ~ 1000 DEG C of the mixture after shaping for step C gained, the burning chemistry chains carrier of oxygen is namely obtained.
2. method according to claim 1, is characterized in that: the routine of described step C is shaping is need make spherical, granular or carry out global formation to mixture according to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329313.8A CN102517122B (en) | 2011-10-26 | 2011-10-26 | Method for preparing chemical-looping combustion oxygen carrier by use of red mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329313.8A CN102517122B (en) | 2011-10-26 | 2011-10-26 | Method for preparing chemical-looping combustion oxygen carrier by use of red mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102517122A CN102517122A (en) | 2012-06-27 |
| CN102517122B true CN102517122B (en) | 2015-01-28 |
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| CN201110329313.8A Active CN102517122B (en) | 2011-10-26 | 2011-10-26 | Method for preparing chemical-looping combustion oxygen carrier by use of red mud |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150343416A1 (en) | 2014-06-03 | 2015-12-03 | Saudi Arabian Oil Company | Activation of Waste Metal Oxide as an Oxygen Carrier for Chemical Looping Combustion Applications |
| CN104961095A (en) * | 2015-06-16 | 2015-10-07 | 昆明理工大学 | Preparation method of red-mud-based oxygen carrier for chemical looping hydrogen |
| CN105126794B (en) * | 2015-07-29 | 2018-02-09 | 昆明理工大学 | A kind of application for the method and the carrier of oxygen that the carrier of oxygen is prepared using wastewater sludge |
| CN105565660B (en) * | 2015-12-07 | 2019-04-02 | 济南大学 | It is a kind of using red mud as high-performance aluminum silicate glass of primary raw material and preparation method thereof |
| CN110055120A (en) * | 2019-06-06 | 2019-07-26 | 河南城建学院 | A kind of preparation method and system of burning chemistry chains composite oxygen carrier |
| CN110760360A (en) * | 2019-10-29 | 2020-02-07 | 昆明理工大学 | Method for preparing coal-fired chemical-looping combustion oxygen carrier by using isometric impregnation method |
| WO2021150169A1 (en) * | 2020-01-22 | 2021-07-29 | Nanyang Technological University | Catalytic sorbent material for chemical looping combustion and adsorption of impurities |
| CN111998335B (en) * | 2020-09-02 | 2022-11-18 | 中国石油化工股份有限公司 | Auxiliary combustion oxygen carrier composition and preparation method and application thereof |
| CN114275736B (en) * | 2021-11-30 | 2023-03-28 | 西安交通大学 | Chemical-looping CO (carbon monoxide) method taking red mud as oxygen carrier 2 Staged regeneration process and system |
| CN114702332B (en) * | 2022-03-23 | 2023-05-23 | 山东科技大学 | Red mud ceramic ball oxygen carrier and preparation method and application thereof |
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| CN101880569A (en) * | 2010-06-24 | 2010-11-10 | 昆明理工大学 | Oxygen carrier for smokeless combustion technology and preparation method thereof |
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2011
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880569A (en) * | 2010-06-24 | 2010-11-10 | 昆明理工大学 | Oxygen carrier for smokeless combustion technology and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 赖兰萍等.赤泥综合回收与利用现状及进展.《四川有色金属》.2008,(第1期),第43-48页. * |
| 辛嘉余等."铁矿石作为氧载体在熔融盐中催化甲烷燃烧".《工业加热》.2006,第34卷(第6期),第1-4页. * |
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