CN108980821A - A kind of processing of fast heating at high temperature method burns converter fly ash process containing dioxin - Google Patents
A kind of processing of fast heating at high temperature method burns converter fly ash process containing dioxin Download PDFInfo
- Publication number
- CN108980821A CN108980821A CN201810559275.7A CN201810559275A CN108980821A CN 108980821 A CN108980821 A CN 108980821A CN 201810559275 A CN201810559275 A CN 201810559275A CN 108980821 A CN108980821 A CN 108980821A
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- Prior art keywords
- dust
- coal
- melting furnace
- fly ash
- heavy metal
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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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/40—Intercepting solids by cyclones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/50—Blending
- F23K2201/501—Blending with other fuels or combustible waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention provides a kind of processing of fast heating at high temperature method and burns converter fly ash process containing dioxin, the process is to burn the composite blowing material based on converter fly ash and coal dust containing dioxin, injection silo is added in composite blowing material by coal dust preparation system, obtain qualified composite blowing material, composite blowing material is sprayed by spray gun and is blown into melting furnace by upper exhaust outlet or lower exhaust outlet, coal dust firing releases heat near burner, quickly heating is burned containing dioxin and is decomposed under the supreme temperature of converter fly ash, portion of product after decomposition forms high-temperature mixed gas, high-temperature mixed gas obtains carbonaceous dust after cyclone dust removal, carbonaceous dust is Ke Xunhuanliyong, heavy metal dirt mud can be obtained in remaining mixed gas after further dedusting, part heavy metal deposition after flying dust decomposition is into the slag of melting furnace lower part, it is molten to obtain high-purity heavy metal Slag.
Description
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of fast heating at high temperature method processing incinerator containing dioxin is winged
Grey process.
Background technique
With the high speed development of society, the yield of rubbish is also increasing, a large amount of rubbish is faced, using incineration treatment of garbage
It is a kind of effective mode for realizing garbage as resource, also meets that the current refuse production in China is big, land resource is short and energy
Source national conditions in short supply.But the dioxin contamination that the secondary pollution of incineration treatment of garbage generation especially generates does not obtain preferably
Processing.Data show that the dioxin in natural environment has 95% incinerator from waste incineration, burning it is insufficient
Generated dioxin can be discharged into atmospheric environment with combustion product gases, and the interaction by biology in natural environment and the earth is made
Other rings are entered with (such as gas-soil reciprocation, gas-ocean reciprocation, atmospheric air circulation and biological chain circulation)
In border and the ecosystem, lead to global pollution spread；And dioxin has carcinogenicity, mutagenicity and teratogenesis to human body
The characteristic of shape has very strong toxicity.Therefore, the dioxin flying dust generated to waste incinerator, which carries out pollution processing, to be had very
Good environmental benefit and social benefit.
Melting and reducing furnace technology is more concerned for handling the technique of dusting solid waste material, and melting furnace can will burn
Furnace flying dust containing dioxin is blown into wherein by oxygen-enriched mode and decomposes it using hot environment and removes objectionable impurities, realize ring
Protect benefit.The high-temperature region temperature height of the technique is conducive to the decomposition of dioxin, and can use the reduction elements in dioxin
The reduction for completing ferriferous oxide, obtains liquid molten iron.Realize good economic benefit and environmental benefit.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of processing of fast heating at high temperature method and burns converter fly ash work containing dioxin
Process, the process are the composite blowing material to burn converter fly ash and coal dust containing dioxin, pass through coal dust preparation system
Injection silo is added in composite blowing material, then is blown into melting furnace by spray gun, coal dust firing releases heat near burner, quickly
Heating burns the lower decomposition of the supreme temperature of converter fly ash containing dioxin, and the portion of product after decomposition forms high-temperature mixed gas, high temperature mixing
Gas obtains carbonaceous dust after cyclone dust removal, and carbonaceous dust is Ke Xunhuanliyong, and remaining mixed gas passes through further dedusting
After can be obtained heavy metal dirt mud, flying dust decompose after part heavy metal deposition into the slag of melting furnace lower part, obtain high-purity
Heavy metal slag；
Further, the process the following steps are included:
(1): a certain amount of burning converter fly ash containing dioxin being added in coal dust preparation system, passes through coal-grinding equipment and completes two evils
The mixing of English flying dust and coal dust by the way that the moisture in flying dust to be reduced to certain degree using dried medium, and completes coal
The inerting of powder-flying dust；
(2): the coal dust containing certain percentage flying dust after inerting in step (1) is sprayed by oxygen coal by a certain percentage with oxygen-enriched
Rifle enters air port；
(3): it is added to coal dust firing in melting furnace and forms hot environment, decompose dioxin completely, the Pb that is generated after decomposition,
The heavy metals such as Cd are transferred in the slag of melting furnace, form solidfied material, dioxin exploded rear divides heavy metal to gasify, into high temperature
In mixed gas；
(4) high-temperature mixed gas in step (3), by cyclone dust collectors, is obtained after the discharge of the exhaust chamber of melting furnace
Carbonaceous dust, the carbonaceous dust can further be added in melting furnace and recycle, and remaining mixed gas is by further removing
Heavy metal dusts can be obtained after dirt, can further be utilized after the heavy metal slag water cooling discharge in melting furnace；
Further, burning converter fly ash containing dioxin and make a living waste incinerator living, incinerator for medical garbage in the step (1)
Or the dioxin that contains of the generations such as industrial refuse and incineration furnace burns converter fly ash；
Further, when entering air port by oxygen coal spray gun in the step (2), it can be added or pass through from upper exhaust outlet
Lower exhaust outlet is added；
Beneficial effects of the present invention are as follows:
1): due to temperature higher in melting furnace, dioxin can almost decompose completely, flying dust be added mode can take with
Air port is added by oxygen coal spray gun in coal dust mixing, and the mode that melting furnace is added can choose exhaust outlet or lower exhaust outlet, mode
Flexibly；
2): the high-temperature mixed gas formed after reaction can obtain carbonaceous dust by cyclone dust collectors, recycle again, reduce
The supplies consumption of melting furnace, and the part heavy metal deposition after decomposition can be utilized further in the slag of melting furnace；
3): can handle flying dust containing dioxin caused by various waste incinerators, process range is wide, and high production efficiency has
Economic benefit, environmental benefit and the social benefit of highly significant.
Detailed description of the invention
Fig. 1 is the flow chart of process of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.On the contrary, the present invention cover it is any be defined by the claims do on the essence and scope of the present invention
Substitution, modification, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to this
It is detailed to describe some specific detail sections in the datail description of invention.It is thin without these for a person skilled in the art
The present invention can also be understood completely in the description of section part.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as a limitation of the invention.
Most preferred embodiment is enumerated below for of the invention:
As shown in Figure 1, the present invention, which provides a kind of processing of fast heating at high temperature method, burns converter fly ash process containing dioxin, it is described
Process is to burn the composite blowing material based on converter fly ash and coal dust containing dioxin, by coal dust preparation system by compound spray
It blows material and injection silo is added, obtain qualified composite blowing material, composite blowing material is passed through into upper exhaust outlet or lower air draft by spray gun spray
Mouth is blown into melting furnace, and coal dust firing releases heat near burner, and quickly heating is containing the dioxin burning supreme temperature of converter fly ash
Lower decomposition, the portion of product after decomposition form high-temperature mixed gas, and high-temperature mixed gas obtains carbonaceous powder after cyclone dust removal
Dirt, carbonaceous dust is Ke Xunhuanliyong, and heavy metal dirt mud can be obtained in remaining mixed gas after further dedusting, after flying dust decomposes
Part heavy metal deposition into the slag of melting furnace lower part, obtain high-purity heavy metal slag.
The method is specific as follows:
(1): a certain amount of burning converter fly ash containing dioxin being added in coal dust preparation system, passes through coal-grinding equipment and completes two evils
The mixing of English flying dust and coal dust by the way that the moisture in flying dust to be reduced to certain degree using dried medium, and completes coal
The inerting of powder-flying dust；
(2): the coal dust containing certain percentage flying dust after inerting in step (1) is sprayed by oxygen coal by a certain percentage with oxygen-enriched
Rifle enters air port；
(3): it is added to coal dust firing in melting furnace and forms hot environment, decompose dioxin completely, the Pb that is generated after decomposition,
The heavy metals such as Cd are transferred in the slag of melting furnace, form solidfied material, dioxin exploded rear divides heavy metal to gasify, into high temperature
In mixed gas；
(4) high-temperature mixed gas in step (3), by cyclone dust collectors, is obtained after the discharge of the exhaust chamber of melting furnace
Carbonaceous dust, the carbonaceous dust can further be added in melting furnace and recycle, and remaining mixed gas is by further removing
Heavy metal dusts can be obtained after dirt, can further be utilized after the heavy metal slag water cooling discharge in melting furnace；
(5) burning converter fly ash containing dioxin and make a living waste incinerator, incinerator for medical garbage or industrial refuse and incineration living described in
The generations such as furnace burn converter fly ash containing dioxin；
(6) when the burning converter fly ash containing dioxin described in enters air port by oxygen coal spray gun, can be added from upper exhaust outlet can also
To be added by lower exhaust outlet.
Embodiment one:
Select a kind of fly ash of municipal incinerator and coal dust as raw material, wherein dioxin contains in fly ash of municipal incinerator
Amount is 321ng-TEQ/kg, and the average particle size of coal dust is 1 ~ 1.8mm.20% burning converter fly ash is added in coal dust preparation system, passes through
Make after ball-grinding machine granularity less than 0.075mm coal dust intermixture be greater than 80%, water content less than 1.3%, be put into pulverized coal bin with
It is standby to use.
Using a certain amount of nitrogen pulverized coal conveying, and the concentration of coal dust is made to be greater than 30kg coal dust/kg gas, coal dust is passed through molten
The coal powder lance for melting exhaust outlet under furnace is injected in melting furnace, and the oxygen-enriched a part of melting furnace is also passed through oxygen coal spray gun and is entered
Air port.
The coal dust firing sprayed into melting furnace generates a large amount of heat, and the dioxin in burning converter fly ash is under high temperature environment
Fully it is detained realization almost to decompose, the slag of the part heavy metals immobilization that decomposable process generates to melting furnace lower part
In, part heavy metal gasifies into high-temperature mixed gas.
Carbonaceous dust of the high-temperature mixed gas after the discharge of the exhaust chamber of melting furnace after cyclone dust collectors can be into one
Step, which is added in melting furnace, to be recycled, and heavy metal dusts can be obtained after further dedusting in remaining mixed gas.Melting furnace
Bottom heavy metal slag is periodically discharged, can further utilize.
Embodiment two:
Select a kind of industrial refuse and incineration converter fly ash and coal dust as blowing treatment process raw material, in industrial refuse and incineration converter fly ash
Dioxins concentration 366ng-TEQ/kg, the granularity of coal dust are 1.0mm or so, and 27% burning converter fly ash is added in coal dust preparation system,
By making coal dust intermixture of the granularity less than 0.075mm be greater than 80% after ball-grinding machine, water content is put into coal dust less than 1.1%
Storehouse is in case use.
Using a certain amount of compressed air pulverized coal conveying, and the concentration of coal dust is made to be greater than 30kg coal dust/kg gas, coal dust is led to
It crosses the coal powder lance of exhaust outlet on melting furnace to be injected in melting furnace, and the oxygen-enriched a part of melting furnace is also passed through into oxygen coal spray gun
Into air port.Subsequent smelting process is identical as embodiment one, and the dust phosphorus content after cyclone dust removal can reach 60% or so,
Heavy metal slag can be obtained in melting furnace bottom.
Embodiment described above, only one kind of the present invention more preferably specific embodiment, those skilled in the art
The usual variations and alternatives that member carries out within the scope of technical solution of the present invention should be all included within the scope of the present invention.
Claims (4)
1. a kind of fast heating at high temperature method processing burns converter fly ash process containing dioxin, which is characterized in that the technique side
Method is the composite blowing material to burn converter fly ash and coal dust containing dioxin, and composite blowing material is added by coal dust preparation system and sprays
Storehouse is blown, then is blown into melting furnace by spray gun, coal dust firing releases heat near burner, quickly heats incinerator containing dioxin
It is decomposed under flying dust to high temperature, the portion of product after decomposition forms high-temperature mixed gas, and high-temperature mixed gas is after cyclone dust removal
Carbonaceous dust is obtained, carbonaceous dust is Ke Xunhuanliyong, and heavy metal dirt mud can be obtained in remaining mixed gas after further dedusting,
Part heavy metal deposition after flying dust decomposition obtains high-purity heavy metal slag into the slag of melting furnace lower part.
2. the method according to claim 1, wherein the process the following steps are included:
(1): a certain amount of burning converter fly ash containing dioxin being added in coal dust preparation system, passes through coal-grinding equipment and completes two evils
The mixing of English flying dust and coal dust by the way that the moisture in flying dust to be reduced to certain degree using dried medium, and completes coal
The inerting of powder-flying dust；
(2): the coal dust containing certain percentage flying dust after inerting in step (1) is sprayed by oxygen coal by a certain percentage with oxygen-enriched
Rifle enters air port；
(3): it is added to coal dust firing in melting furnace and forms hot environment, decompose dioxin completely, the Pb that is generated after decomposition,
The heavy metals such as Cd are transferred in the slag of melting furnace, form solidfied material, dioxin exploded rear divides heavy metal to gasify, into high temperature
In mixed gas；
(4) high-temperature mixed gas in step (3), by cyclone dust collectors, is obtained after the discharge of the exhaust chamber of melting furnace
Carbonaceous dust, the carbonaceous dust can further be added in melting furnace and recycle, and remaining mixed gas is by further removing
Heavy metal dusts can be obtained after dirt, can further be utilized after the heavy metal slag water cooling discharge in melting furnace.
3. process according to claim 2, which is characterized in that the incinerator containing dioxin in the step (1) flies
Ash is the generations such as domestic waste incineration, incinerator for medical garbage or industrial refuse and incineration furnace containing dioxin burning converter fly ash.
4. process according to claim 2, which is characterized in that enter wind by oxygen coal spray gun in the step (2)
When mouth, it can be added from upper exhaust outlet or be added by lower exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559275.7A CN108980821A (en) | 2018-06-01 | 2018-06-01 | A kind of processing of fast heating at high temperature method burns converter fly ash process containing dioxin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559275.7A CN108980821A (en) | 2018-06-01 | 2018-06-01 | A kind of processing of fast heating at high temperature method burns converter fly ash process containing dioxin |
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| Publication Number | Publication Date |
|---|---|
| CN108980821A true CN108980821A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810559275.7A Pending CN108980821A (en) | 2018-06-01 | 2018-06-01 | A kind of processing of fast heating at high temperature method burns converter fly ash process containing dioxin |
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| Country | Link |
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| CN (1) | CN108980821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369440A (en) * | 2019-06-26 | 2019-10-25 | 安徽安江环保科技有限公司 | A kind of combustion refuse flying dust recovery process |
| CN113667788A (en) * | 2021-06-29 | 2021-11-19 | 首钢京唐钢铁联合有限责任公司 | Non-blast furnace ironmaking equipment and comprehensive metallurgical dust utilization method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270925A (en) * | 1995-03-31 | 1996-10-18 | Nkk Corp | Method and apparatus for treating incineration fly ash and molten fly ash in refuse processing plant |
| CN1632376A (en) * | 2004-12-30 | 2005-06-29 | 哈尔滨工业大学 | Method of processing refuse burning fly ash through cyclone furnace high temperature melting |
| CN201823472U (en) * | 2010-12-10 | 2011-05-11 | 常州市三信环保设备有限公司 | Flue gas treatment system |
| CN203833894U (en) * | 2014-03-10 | 2014-09-17 | 河南弘康环保科技有限公司 | Waste incineration fly ash treatment system |
-
2018
- 2018-06-01 CN CN201810559275.7A patent/CN108980821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270925A (en) * | 1995-03-31 | 1996-10-18 | Nkk Corp | Method and apparatus for treating incineration fly ash and molten fly ash in refuse processing plant |
| CN1632376A (en) * | 2004-12-30 | 2005-06-29 | 哈尔滨工业大学 | Method of processing refuse burning fly ash through cyclone furnace high temperature melting |
| CN201823472U (en) * | 2010-12-10 | 2011-05-11 | 常州市三信环保设备有限公司 | Flue gas treatment system |
| CN203833894U (en) * | 2014-03-10 | 2014-09-17 | 河南弘康环保科技有限公司 | Waste incineration fly ash treatment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369440A (en) * | 2019-06-26 | 2019-10-25 | 安徽安江环保科技有限公司 | A kind of combustion refuse flying dust recovery process |
| CN113667788A (en) * | 2021-06-29 | 2021-11-19 | 首钢京唐钢铁联合有限责任公司 | Non-blast furnace ironmaking equipment and comprehensive metallurgical dust utilization method |
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Application publication date: 20181211 |