CN108192686A - A kind of preparation method of slag oxygen carrier - Google Patents
A kind of preparation method of slag oxygen carrier Download PDFInfo
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- CN108192686A CN108192686A CN201711381957.5A CN201711381957A CN108192686A CN 108192686 A CN108192686 A CN 108192686A CN 201711381957 A CN201711381957 A CN 201711381957A CN 108192686 A CN108192686 A CN 108192686A
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- slag
- oxygen carrier
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
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- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to the preparing technical fields of oxygen carrier in burning chemistry chains system, more specifically, are related to a kind of preparation method of slag oxygen carrier.Oxygen carrier using slag as body material, by obtain having after drying, broken and sulphation high oxygen carrier amount, high response, not conglomeration slag oxygen carrier.The present invention has many advantages, such as that preparation method is simple, oxygen carrier obtained is cheap, oxygen carrying capability is high, reactivity worth is excellent.The present invention provides a kind of slag oxygen carrier preparation with industrial potential, the problems such as overcoming the oxygen carrier amount of current oxygen carrier low, of high cost, realizes a large amount of utilizations of slag, avoids occupying a large amount of soils, cause the pollution of environment.
Description
Technical field
The present invention relates to the preparing technical fields of oxygen carrier in burning chemistry chains system, more specifically, are related to a kind of profit
With prepared from steel slag for the method for burning chemistry chains oxygen carrier.
Background technology
Due to a large amount of uses of fossil fuel, CO2Isothermal chamber gas emissions increase severely.China promises to undertake will be in or so the year two thousand thirty
CO2 emission is made to reach peak value and strives for realizing as early as possible.Therefore, emission reduction CO2It is of great significance to China.Traditional combustion
CO in the flue gas that mode generates2Concentration only accounts for 10%-14%, constrains CO in flue gas2Utilization and consumption.The CO of mainstream at present2It catches
Collection technology includes trapping and post-combustion capture in pre-combustion capture, burning, although CO can be realized2Recycling, but need to consume
The a large amount of energy causes emission reduction cost too high.Burning chemistry chains are a kind of novel combustion systems, in combustion with solid
Lattice Oxygen substitutes air burning, avoids being in direct contact for fuel and air.In fuel reaction chamber, fuel and oxygen carrier precursor reactant,
Complete the oxidation of fuel；The oxygen carrier being reduced enters air reaction room, carries out oxidation reaction with air, realizes oxygen carrier again
It is raw.Wherein, the property of oxygen carrier directly affects the stabilization of entire burning chemistry chains system operation.
At present, the oxygen carrier mainly studied is metal oxygen carrier, and the oxide including Fe, Ni, Co, Cu, Mn, Cd etc. carries
Body mainly has：Al2O3、TiO2、MgO、SiO2, YSZ etc..As patent CN104164273A discloses one kind using calcium sulfate as master
Body raw material, in the preparation method of the calcium base load oxysome using aluminium oxide, Ludox or glycerine as carrier；Patent CN104119983A
Disclose the preparation method that a kind of CuO and FeO mass fractions are respectively the 95% and 5% copper-based composite oxygen carrier of iron content；Patent
CN104152211A disclose it is a kind of use sol-gal process prepare composition for CuO（95%）And MgO（5%）The copper-based compound load of magnesium
The method of oxysome.Wherein Fe base loads oxysome, especially natural iron ore, because it is minimum with respect to other oxygen carrier costs, source is most
Extensively and with good environmental benefit, extensive concern is attracted.But Fe base load oxysome oxygen carrier amounts are low, and reactive difference constrains
It develops and application.The problem of to reduce the cost of oxygen carrier and small metal oxygen carrier oxygen carrier amount, CaSO4Base load oxysome becomes weight
It selects.But it leads to the problem that cycle performance is unstable, while cryogenic conditions there is also easily being decomposed during redox
Lower CaSO4Reduction reaction poor-performing.
Slag is a kind of solid waste generated in steelmaking process, 2016, whole world slag yield about 1.6-2.4
Hundred million tons, wherein China accounts for half.This part slag cannot utilize well, be not only a kind of waste of resource, and occupy
A large amount of soils cause the pollution of environment.
Invention content
In order to overcome the problems such as oxygen carrier oxygen carrier amount is low, of high cost in the prior art, the present invention provide it is a kind of it is simple for process,
At low cost, non-environmental-pollution, the method for preparing burning chemistry chains oxygen carrier largely utilized that can realize slag waste.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
The raw material based on slag, by sulphation handle prepare high oxygen carrier amount, high response slag oxygen carrier.
It is a kind of using prepared from steel slag for the method for burning chemistry chains oxygen carrier：
S1, slag is placed in baking oven, it is dry to constant weight；
S2, it will be crushed in dried slag addition steam kinetic energy mill, grading pressed with grader；
S3, selection granularity carry out sulphation processing in 3.15-15.78 μm of slag, obtain burning chemistry chains oxygen carrier.
The slag drying temperature is 100-120 DEG C, removes moisture in slag.
The steam kinetic energy is milled broken pressure as 0.7-0.9MPa, and grader rotating speed is 720r/min.
The sulphation processing is that slag is placed in SO20.5-1h is calcined in atmosphere, calcination temperature is 800-1000 DEG C.
The SO2A concentration of 1%-5%.
Compared with prior art, the advantageous effect of present invention is that：
Chemical chain burning technology is combined by the present invention with the recycling of slag, realizes resources effective utilization, can both be dissolved
Slag, and provide technical support for carbon dioxide discharge-reduction；Using slag by oxygen carrier made from sulphation it is cheap, prepare
Method is simple, environmentally friendly, high mechanical strength, oxygen carrying capability are high, is a kind of efficient oxygen carrier.Ingredient can effectively press down in slag
Active component CaSO processed4The generation of side reaction increases the effective area of oxygen carrier active component, improves oxygen carrier reactivity,
The carrier that the present invention obtains simultaneously can be used for the oxygen carrier using coal, biomass and municipal solid wastes as the burning chemistry chains of fuel
Body.
Description of the drawings
Fig. 1 is the XRD spectrum of the slag oxygen carrier prepared by the present invention.
Fig. 2 is thermogravimetric curve figure of the slag oxygen carrier in oxidation-reduction process prepared by the present invention.
Fig. 3 is the variation diagram of slag oxygen carrier oxygen carrier amount during burning chemistry chains prepared by the present invention.
Fig. 4 is the slag oxygen carrier variation diagram that sulphur loses during burning chemistry chains prepared by the present invention.
Fig. 5 is that the slag oxygen carrier prepared by the present invention completes the oxygen evolution time.
Fig. 6 is the scanning electron microscope (SEM) photograph of the slag oxygen carrier prepared by the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Slag 2g slags is taken to be placed in baking oven, drying to constant weight under the conditions of 100 DEG C, and to remove moisture, slag is put into pressure after dry
Power is crushes, then with grader by grading, grader rotating speed is 720r/min, chooses granularity in 0.7MPa steam kinetic energy mill
The 5%SO that flow is 200 ml/min is placed in 3.15-15.78 μm of slag20.5h, calcination temperature 800 are calcined in atmosphere
DEG C, burning chemistry chains oxygen carrier is made.
Embodiment 2
Slag 2g slags is taken to be placed in baking oven, drying to constant weight under the conditions of 110 DEG C, and to remove moisture, slag is put into pressure after dry
Power is crushes, then with grader by grading, grader rotating speed is 720r/min, chooses granularity in 0.8MPa steam kinetic energy mill
The 1%SO that flow is 200 ml/min is placed in 3.15-15.78 μm of slag21h is calcined in atmosphere, calcination temperature is 1000 DEG C,
Burning chemistry chains oxygen carrier is made.
Embodiment 3
Slag 2g slags is taken to be placed in baking oven, drying to constant weight under the conditions of 120 DEG C, and to remove moisture, slag is put into pressure after dry
Power is crushes, then with grader by grading, grader rotating speed is 720r/min, chooses granularity in 0.9MPa steam kinetic energy mill
The 3%SO that flow is 200 ml/min is placed in 3.15-15.78 μm of slag20.8h, calcination temperature 900 are calcined in atmosphere
DEG C, burning chemistry chains oxygen carrier is made.
As shown in Figure 1, key component CaO is as slag oxygen carrier main active component in slag of the present invention, and in slag
FeO, MgO and SiO2The specific surface area of active component matrix can be effectively increased.Slag oxygen carrier reactivity is approached with NiO, significantly
It is better than calcium sulfate, and ingredient can effectively inhibitory activity component CaSO in slag4The generation of side reaction improves carrier reactivity,
Active constituent can convert completely in oxidation-reduction process, and reaction speed is fast.
As in Figure 2-4, the slag oxygen carrier prepared by the present invention is when reaction temperature is 750-850 DEG C, maximum oxygen carrier
Amount can be stablized through recycling rear bearing oxygen amount for several times 12% or so up to 18%.At present, it can be carried with the Metal Substrate oxygen carrier of stable operation
Oxygen amount is generally 3%-10%, and slag base load oxysome oxygen carrier amount prepared by the present invention is significantly stronger than metal oxygen carrier.
As shown in figure 5, the slag oxygen carrier prepared by the present invention can complete the release of oxygen in 10 minutes, reactivity worth is excellent
It is different.And CaSO4The release that oxygen carrier completes oxygen needs 2 hours or so.
As shown in fig. 6, the slag oxygen carrier prepared by the present invention does not occur significantly to reunite, good dispersion has tiny
Oxygen carrier granule, and performance stablize.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
Within the knowledge of a person skilled in the art, it can also be made under the premise of present inventive concept is not departed from each
Kind variation, various change should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of preparation method of slag oxygen carrier, it is characterised in that：
S1, slag is placed in baking oven, it is dry to constant weight；
S2, it will be crushed in dried slag addition steam kinetic energy mill, grading pressed with grader；
S3, selection granularity carry out sulphation processing in 3.15-15.78 μm of slag, obtain burning chemistry chains oxygen carrier.
2. a kind of preparation method of slag oxygen carrier according to claim 1, it is characterised in that：The slag drying temperature
It is 100-120 DEG C.
3. a kind of preparation method of slag oxygen carrier according to claim 1, it is characterised in that：The steam kinetic energy milling
Broken pressure is 0.7-0.9MPa, and grader rotating speed is 720r/min.
4. a kind of preparation method of slag oxygen carrier according to claim 1, it is characterised in that：The sulphation is handled
Slag is placed in SO20.5-1h is calcined in atmosphere, calcination temperature is 800-1000 DEG C.
5. a kind of preparation method of slag oxygen carrier according to claim 1 and 4, it is characterised in that：The SO2It is a concentration of
1%-5%。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381957.5A CN108192686B (en) | 2017-12-20 | 2017-12-20 | Preparation method of steel slag oxygen carrier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711381957.5A CN108192686B (en) | 2017-12-20 | 2017-12-20 | Preparation method of steel slag oxygen carrier |
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| CN108192686A true CN108192686A (en) | 2018-06-22 |
| CN108192686B CN108192686B (en) | 2020-11-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054225A (en) * | 2019-05-09 | 2019-07-26 | 新奥科技发展有限公司 | A kind of preparation method of oxygen carrier |
| CN113201377A (en) * | 2021-05-06 | 2021-08-03 | 内蒙古科技大学 | Preparation method of rare earth tailing based oxygen carrier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892110A (en) * | 2010-06-04 | 2010-11-24 | 青岛科技大学 | Preparation method of compound type oxygen carrier particles |
| CN102114383A (en) * | 2011-01-18 | 2011-07-06 | 上海交通大学 | Ammonia-chemical-chain-cycle-based carbon dioxide capture and conversion method |
| CN105327926A (en) * | 2015-10-27 | 2016-02-17 | 安徽工业大学 | Method for preparing calcium-ferrum double-oxygen carrier with converter steelmaking slag as raw materials |
| CN106145720A (en) * | 2015-03-27 | 2016-11-23 | 宝山钢铁股份有限公司 | A kind of processing method of steel-making slag powder |
| CN106753684A (en) * | 2016-12-25 | 2017-05-31 | 常州创索新材料科技有限公司 | A kind of method that utilization blast furnace slag prepares the burning chemistry chains carrier of oxygen |
-
2017
- 2017-12-20 CN CN201711381957.5A patent/CN108192686B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892110A (en) * | 2010-06-04 | 2010-11-24 | 青岛科技大学 | Preparation method of compound type oxygen carrier particles |
| CN102114383A (en) * | 2011-01-18 | 2011-07-06 | 上海交通大学 | Ammonia-chemical-chain-cycle-based carbon dioxide capture and conversion method |
| CN106145720A (en) * | 2015-03-27 | 2016-11-23 | 宝山钢铁股份有限公司 | A kind of processing method of steel-making slag powder |
| CN105327926A (en) * | 2015-10-27 | 2016-02-17 | 安徽工业大学 | Method for preparing calcium-ferrum double-oxygen carrier with converter steelmaking slag as raw materials |
| CN106753684A (en) * | 2016-12-25 | 2017-05-31 | 常州创索新材料科技有限公司 | A kind of method that utilization blast furnace slag prepares the burning chemistry chains carrier of oxygen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054225A (en) * | 2019-05-09 | 2019-07-26 | 新奥科技发展有限公司 | A kind of preparation method of oxygen carrier |
| CN113201377A (en) * | 2021-05-06 | 2021-08-03 | 内蒙古科技大学 | Preparation method of rare earth tailing based oxygen carrier |
| CN113201377B (en) * | 2021-05-06 | 2022-08-09 | 内蒙古科技大学 | Preparation method of rare earth tailing based oxygen carrier |
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| CN108192686B (en) | 2020-11-13 |
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