CN106010729A - Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent - Google Patents
Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent Download PDFInfo
- Publication number
- CN106010729A CN106010729A CN201610542025.3A CN201610542025A CN106010729A CN 106010729 A CN106010729 A CN 106010729A CN 201610542025 A CN201610542025 A CN 201610542025A CN 106010729 A CN106010729 A CN 106010729A
- Authority
- CN
- China
- Prior art keywords
- coal
- fluxing agent
- composite fluxing
- mgo
- coal ash
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- 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
Abstract
The invention discloses an efficient Fe2O3-MgO (named as Fe-Mg for short) composite fluxing agent for lowering the melting temperature of Pingdingshan coal ash and application of the composite fluxing agent. When the composite fluxing agent is used, the composite fluxing agent is prepared by compositing two alkali metal oxides including Fe2O3 and MgO according to different mass ratios, and the addition quantity of Fe2O3 and MgO accounts for 2.50%-9.00% of that of coal. When Fe2O3 and MgO in the composite fluxing agent are mixed according to the mass ratio of 2:1, and the addition quantity of Fe2O3 and MgO is 4.00%, the fluxing effect is most significant. The composite fluxing agent can be used for replacing a single fluxing agent and is beneficial for long-term operation and stable operation of a gasification furnace, the operation cost is reduced, and the economic benefit is increased.
Description
Technical field
The present invention relates to flux field, be specifically related to a kind of reduce the efficient of table mountain coal ash melting temperature
Fe-Mg composite fluxing agent and application thereof.
Background technology
The energy is that human society exists and the basis of development, and its producing level and Land use systems are countries
The representative of level of economic development height, and coal is ingredient important in the energy.China's lignite resource is rich
Richness, but owing to its moisture is high, calorific value is low, easily causes the characteristic of burner hearth fouling and slagging so that it is in extensive profit
By a definite limitation during with, therefore for the coal of high ash melt temperature, study its coal ash and melt
Characteristic seems the most necessary.Coal ash is one of important indicator of steam coal and coal for gasification, right
The combustion furnace of dry ash extraction and gasification furnace, it is desirable to the melt temperature of feed coal is the highest more good, and liquid is arranged
Slag gasification furnace, then require that coal ash has relatively low fusing point, and the mensuration of coal ash melting property is judge clinkering property important
One of means.At present, the common method of the specific coal ash melting temperature of research reduction has: one, add in coal ash
Add flux and reduce coal ash melting temperature；Two, the atmosphere of coal ash roasting process is changed.
Research shows, coal ash melting temperature forms close relation with coal ash.When acidic oxide in coal ash
(SiO2、Al2O3And TiO2) content higher time, coal ash has higher melt temperature；Basic anhydride
(Fe2O3、CaO、MgO、Na2O and K2O) then coal melt temperature then there is is significant inhibitory action, its
Content is the most, and melt temperature is the lowest.Therefore, coal ash flux is generally selected basic anhydride and mixing thereof
Thing, according to its composition difference, flux can be divided into single flux and composite fluxing agent two class.
Single flux includes calcium system (CaO), Fe system (Fe2O3), Mg system (MgO), V system and Ni
The metal-oxides such as system, its mechanism of action is basic anhydride and to react generation low for the acidic oxide in coal ash
The compound of fusing point, thus cause ash melt temperature to reduce.Single alkali metal oxide flux is due to its group
Becoming simple, addition such as is easily controlled at the advantage, becomes the focus of research.CaO adds coal to as flux
In ash, it is possible to SiO in coal ash2Reaction generates the silicate of low melting point so that coal ash melting temperature declines.
The melting temperature of monomer CaO is the highest, up to 2590 DEG C, therefore adds a fixed number to along with CaO auxiliary agent
Amount, ash melt temperature the most significantly raises, and therefore its addition is affected bigger by coal ash composition.Fe2O3
Flux joins in coal ash, except can be with the SiO in coal ash2Or Al2O3Beyond reaction eutectic,
Under reducing atmosphere condition, Fe2O3Can be converted into help and melt the FeO that effect is more significantly.Appropriate MgO adds
Being added in coal ash to reduce coal ash melting temperature, when its content is more than 17%, ash melt temperature is along with MgO
The increase of content presents by the trend raised.
For the coal that ash melt temperature is higher, it usually needs add the flux of more amount.Generally and
Speech, flux addition is the most, and the reduction amplitude of ash melt temperature is the biggest, but additive dosage is not
The more the better.Such as, when selecting single alkali metal as flux, when additive dosage reaches certain proportion
After, along with the increase of addition, ash fusion point temperature the most significantly rises.Burning in composite fluxing agent
The cooperative interaction existed between thing so that in the case of identical additive dosage, composite fluxing agent shows
Go out the ability preferably reducing ash melt temperature.In composite fluxing agent research process, select which kind of alkali metal
With which kind of ratio it is combined between oxide and mixture, and alkali metal oxide, could add at minimum auxiliary agent
Under conditions of dosage, it is achieved farthest ash melt temperature reduces？The problems referred to above are not also had by existing technology
There is clear and definite conclusion.
Conventional composite fluxing agent includes Fe2O3-CaO、Al2O3-SiO2-CaO and Al2O3-SiO2-Fe2O3Deng.
Fe2O3Adding in coal ash with CaO, it can destroy the network structure of the sieve and silica-sesquioxide in coal ash, from
And reduce the purpose of coal ash melting temperature, in coal ash, therefore add different ratios
Al2O3-SiO2-X (X=CaO or Fe2O3), coal ash thing phase change drawing after being added by research auxiliary agent
Al2O3-SiO2-X ternary phase diagrams, and then prediction coal ash melting temperature.Fe2O3-CaO is also conventional compound helps
Flux, iron content and calcic slag are joined in coal ash according to different proportionings by Zhang Lei etc., and result shows, phase
For single ferrum system and calcium system flux, a small amount of composite fluxing agent (3%) can make coal ash melting temperature
Reduce by 120 DEG C.
In addition to adding flux, by atmosphere in change coal ash roasting process and in high-ash-fusion coal
Add coal blending, biomass and dirt etc. and all can reduce coal ash melting temperatur.Research shows, coal under reducing atmosphere
Ash melt temperature becomes apparent from the coal ash adding Fe system flux significantly lower than oxidizing atmosphere, this phenomenon,
Tracing it to its cause is Fe2O3Be converted into FeO under reducing atmosphere, and FeO can with coal ash dystectic ore deposit
Material reacts generation eutectic further so that coal ash melting temperature reduces.
In sum, adding alkali metal oxide flux is the most effective approach improving coal ash melting behavior,
Wherein composite fluxing agent shows again the flux effect more excellent than single flux.Conventional research work master
Single alkali metal auxiliary agent to be concentrated and Fe2O3-CaO、Al2O3-SiO2-CaO、Al2O3-SiO2-Fe2O3Deng multiple
Close flux, and for Fe2O3The research of-MgO composite fluxing agent was not the most reported.Area, table mountain coal
Aboundresources, have the title of " middle run coal bin ", is also Henan or even national important Coal Chemical Base.By
In table mountain coal, there is higher grey melt temperature (＞ 1500 DEG C), cause its in gasification, pole
Easily there is stifled slag problem, affect the properly functioning of gasification furnace.Therefore, exploitation one is suitable for high ash melt temperature
The composite fluxing agent of table mountain coal, for reducing energy resource consumption, improve Business Economic Benefit, have important
Realistic meaning.
Summary of the invention
For solving the problems referred to above, the invention provides and a kind of reduce the efficient of table mountain coal ash melting temperature
Fe-Mg composite fluxing agent and application thereof.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of efficient Fe-Mg composite fluxing agent reducing table mountain coal ash melting temperature, by Fe2O3And MgO
Two kinds of basic anhydride are combined according to different mass ratioes and are formed, during in mass ratio 2: 1 mixing, and effect of fluxing
Fruit is the most notable.
The application of the efficient Fe-Mg composite fluxing agent of above-mentioned reduction table mountain coal ash melting temperature, in use
The addition of flux is the 2.50%-9.00% of coal, and when addition is 4.00%, effect of fluxing is the most aobvious
Write.
The method have the advantages that
This efficient composite fluxing agent is substituted for single flux, beneficially gasification furnace longtime running, steady
Fixed operation, reduces operating cost, increases economic efficiency.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out
Further describe.Should be appreciated that specific embodiment described herein only in order to explain the present invention,
It is not intended to limit the present invention.
Embodiment 1: by Fe2O3According to 2.50%, (on the basis of coal, quality is to add in the coal of 100 parts to powder
The auxiliary agent number added) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 2: (on the basis of coal, quality is to add in the coal of 100 parts according to 2.50% by MgO powder
Auxiliary agent number) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 3: be the Fe of 1: 1 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 2.50%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 4: by Fe2O3According to 4.00%, (on the basis of coal, quality is to add in the coal of 100 parts to powder
The auxiliary agent number added) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 5: (on the basis of coal, quality is to add in the coal of 100 parts according to 4.00% by MgO powder
Auxiliary agent number) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 6: be the Fe of 1: 2 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 4.00%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 7: be the Fe of 2: 1 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 4.00%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 8: by Fe2O3According to 6.25%, (on the basis of coal, quality is to add in the coal of 100 parts to powder
The auxiliary agent number added) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 9: (on the basis of coal, quality is to add in the coal of 100 parts according to 6.25% by MgO powder
Auxiliary agent number) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 10: be the Fe of 1: 3 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 6.25%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 11: be the Fe of 3: 1 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 6.25%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 12: by Fe2O3According to 9.00%, (on the basis of coal, quality is to add in the coal of 100 parts to powder
The auxiliary agent number added) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 13: (on the basis of coal, quality is to add in the coal of 100 parts according to 9.00% by MgO powder
The auxiliary agent number added) ratio add in the coal of table mountain, mix homogeneously.
Embodiment 14: be the Fe of 1: 4 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 9.00%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Embodiment 15: be the Fe of 4: 1 by mass ratio2O3It is sufficiently mixed with MgO powder and uniformly makes auxiliary agent,
According to 9.00%, the ratio (on the basis of coal, quality is the auxiliary agent number added in the coal of 100 parts) is added to
In the coal of table mountain, mix homogeneously.
Table 1 coal sample ash melts temperature and single flux and coal ash melts temperature impact
Coal ash is melted temperature impact by table 2 composite fluxing agent
From Tables 1 and 2, table mountain coal adds a small amount of (2.50%-9.00%) flux, energy
Enough significantly reduce coal ash melting temperature.Fe-Mg composite fluxing agent can make coal ash melting temperature from being higher than
1500 DEG C are reduced to less than 1400 DEG C, and its effect of fluxing is than single Fe2O3Drop with MgO flux
Low 50-100 DEG C.At less additive dosage (4.00%), Fe2O3It is 2: 1 with MgO mass ratio
Composite fluxing agent can reach optimal effect of fluxing.
The above is only the preferred embodiment of the present invention, it is noted that common for the art
For technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (2)
1. the efficient Fe-Mg composite fluxing agent reducing table mountain coal ash melting temperature, it is characterised in that
By Fe2O3Mix with MgO in mass ratio 2: 1.
2. the efficient Fe-Mg reducing table mountain coal ash melting temperature as claimed in claim 1 is combined and fluxes
The application of agent, it is characterised in that the addition of flux is the 2.50%-9.00% of coal, when addition is
When 4.00%, effect of fluxing is the most notable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542025.3A CN106010729A (en) | 2016-07-06 | 2016-07-06 | Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610542025.3A CN106010729A (en) | 2016-07-06 | 2016-07-06 | Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106010729A true CN106010729A (en) | 2016-10-12 |
Family
ID=57108524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610542025.3A Pending CN106010729A (en) | 2016-07-06 | 2016-07-06 | Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106010729A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304409A (en) * | 2011-08-09 | 2012-01-04 | 太原理工大学 | Fluxing agent for improving melting of powder coal gasification ash |
| KR20140009629A (en) * | 2012-07-12 | 2014-01-23 | 한국에너지기술연구원 | Modification method for low rank coal |
| CN105542901A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Method for lowering fusing temperature of coal ash |
-
2016
- 2016-07-06 CN CN201610542025.3A patent/CN106010729A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304409A (en) * | 2011-08-09 | 2012-01-04 | 太原理工大学 | Fluxing agent for improving melting of powder coal gasification ash |
| KR20140009629A (en) * | 2012-07-12 | 2014-01-23 | 한국에너지기술연구원 | Modification method for low rank coal |
| CN105542901A (en) * | 2015-12-21 | 2016-05-04 | 神华集团有限责任公司 | Method for lowering fusing temperature of coal ash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102039498B (en) | Sintered flux for two phase stainless steel | |
| CN102304409B (en) | Fluxing agent for improving melting of powder coal gasification ash | |
| CN104232231B (en) | A kind of biomass-based fuel and preparation method | |
| CN104479794B (en) | A kind of fusing assistant and using method thereof reducing gasified pulverized coal slag ash fusion point temperature | |
| CN104479793B (en) | A kind of composite fluxing agent reducing gasified pulverized coal slag ash fusion point temperature | |
| CN103060054A (en) | Method for adjusting and controlling melting temperature of coal ash by combining coal blending with auxiliary agent | |
| CN101665737A (en) | Efficient composite fluxing agent for improving melting characteristic of gasified pulverized coal slag | |
| CN101580751A (en) | Fusing assistant for lowering coal ash fusion temperature and preparation method thereof | |
| CN106521148A (en) | Method for preparing high carbon ferro-chrome by fusible chrome fine ore | |
| CN100534939C (en) | Steel slag treatment additive | |
| CN108018109A (en) | A kind of compound resistance flux for improving low ash smelting point coal ash melting temperature | |
| CN109679705A (en) | A kind of composite fluxing agent improving coal ash melting property | |
| CN107163992B (en) | Auxiliary agent for improving viscosity-temperature characteristics of coal ash slag and application thereof | |
| CN109825666A (en) | A kind of formula and preparation method thereof of free-floride slagging agent | |
| CN101285116A (en) | Iron ore adglutinate synergism combustion adjuvant and method for preparing same | |
| CN106010729A (en) | Efficient Fe-Mg composite fluxing agent for lowering melting temperature of Pingdingshan coal ash and application of composite fluxing agent | |
| CN100351397C (en) | Additive of agglomeration for iron mine | |
| CN109705918B (en) | Composite fluxing agent for improving fusion characteristics of coal ash and preparation method and application thereof | |
| CN108795533A (en) | A kind of coal-saving agent and its preparation process | |
| CN103305313B (en) | Combustion catalyst for low-heat value coal | |
| CN103643041B (en) | Novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate | |
| CN105821281A (en) | Direct steel making alloying metal oxide core-spun yarn and manufacturing method thereof | |
| CN111154934A (en) | Furnace burden structure ratio for adjusting blast furnace slag MgO | |
| CN106520206B (en) | For reducing the efficient composite fluxing agent and its preparation method of coal ash fusion temperature and application | |
| CN207877601U (en) | A kind of system that melting nickel slag prepares forsterite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
|
| RJ01 | Rejection of invention patent application after publication |