CN110296422A - A kind of novel household garbage flying ash melting method of disposal and equipment - Google Patents
A kind of novel household garbage flying ash melting method of disposal and equipment Download PDFInfo
- Publication number
- CN110296422A CN110296422A CN201910475962.5A CN201910475962A CN110296422A CN 110296422 A CN110296422 A CN 110296422A CN 201910475962 A CN201910475962 A CN 201910475962A CN 110296422 A CN110296422 A CN 110296422A
- Authority
- CN
- China
- Prior art keywords
- disposal
- household garbage
- furnace
- novel household
- melting furnace
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of novel household garbage flying ash to melt method of disposal, and the dry disposition of heating furnace pyrolysis is entered after incineration of refuse flyash pretreatment, and the white lime in flying dust is converted to quick lime and gaseous state H2O, Ca(OH) Cl decomposition generation CaO, CaCl2And gaseous H2O, other inherent moistures also become gaseous state H2O.Pyrolysis gas is sent to dual firing chamber's full combustion in heating furnace, and gaseous state moisture is pulled away with pyrolysis gas.Flying dust after pyrolysis is dry, which is transported in melting furnace, melts disposition, and the gas for melting generation enters full combustion in dual firing chamber.The present invention avoids Ca in flying dust (OH)2, Ca(OH) moisture of the generations such as Cl influences reducing atmosphere melting furnace wall refractory, extend refractory life；Influence of the moisture content fluctuation to melting furnace fluctuation of operating conditions in flying dust is reduced simultaneously, and melting disposition operating condition is more stable, and slag solidification effect is more preferable.
Description
Technical field
The present invention relates to a kind of novel household garbage flying ash melting method of disposal and facilities.The present invention is suitable for using
The disposition of calcium hydroxide semidry method/dry-process deacidification flue gas treating process municipal solid waste incinerator fusing fly ash.
Background technique
Consumer waste incineration power plant generallys use calcium hydroxide semidry method/dry-process deacidification+cloth bag flue gas treating process, in order to
Guarantee best deacidification efficiency and prevent cloth bag from paste bag occurs, the flue-gas temperature general control into reactor is at 200 DEG C and following.
According to document 1, since residence time of the flue gas in dry type reactor is short, reaction temperature is low (170 DEG C~230 DEG C), Ca (OH)2
It is Ca(OH that primary product is reacted with HCl in flue gas) Cl, and react incomplete.CaClOH·xH2O and excessive Ca (OH)2Gu
Cognition is captured in cloth bag, is stored in flying dust.
Contain the harmful substances such as heavy metal, dioxin, in order to prevent harmful substance leaching pair in domestic garbage incineration flyash
Environment pollutes, and realizes flying dust resource utilization, and melting and solidification processing technique domestic garbage incineration flyash can be used.At present
Conventional fusing fly ash method of disposal has two kinds of electric power type melting furnace, fuel type melting furnace, and conventional melting disposal facility includes
Flying dust pretreatment unit (compatibility, charging etc.), melting furnace and dual firing chamber.Ca (OH) when fusing fly ash processing, in flying dust2、
CaClOHxH2O is thermally decomposed in melting furnace generates large quantity of moisture, the resistance to material of furnace wall C- base or the resistance to material of SiC and the aqueous coal of water generation
Gasification reaction causes refractory wear.Secondly, in flying dust moisture fluctuation, cause temperature fluctuation in melting furnace, be unfavorable for controlling
System.For the electric power type melting furnace using graphite electrode as heat source, easily with water water gas reaction occurs for electrode at high temperature, leads
Cause export license.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of novel household garbage flying ash to melt method of disposal, extends
Furnace wall refractory life is melted, the graphite electrode service life is extended, reduces fusing fly ash disposal facility energy consumption, and reduces melting furnaceman
Condition fluctuation.
In order to solve the above technical problems, the present invention adopts the following technical scheme that: at a kind of domestic garbage incineration flyash melting
Method is set, flying dust is delivered to after being pyrolyzed drying in heating furnace after pretreatment, then is sent to melting furnace to melt and be disposed.
Further, the high-temperature gas that heating furnace generates is sent into dual firing chamber and carries out full combustion disposition.
Further, the high-temperature gas that heating furnace generates, is first dusted and is re-fed into dual firing chamber afterwards, and the flying dust of capture is sent into
Melting furnace is disposed.
Further, flying dust is delivered in heating furnace after pretreatment, is pyrolyzed dry heat at 500 DEG C~600 DEG C；
Ca (OH) in flying dust2, Ca(OH) Cl is dehydrated completely wherein.
Further, melting furnace atmosphere is reducing atmosphere, and refractory material uses C- base refractory material or the fire resisting of SiC system
Material.
Further, the melting furnace atmosphere is reducing atmosphere, using graphite electrode as heat source.
The present invention also provides a kind of novel household garbage flying ash melt disposal facility, including pretreatment unit, plus
Hot stove, melting furnace, combustion chamber；The pretreatment unit is connect with the heating furnace；The heating furnace is melted with described
Melt furnace connection；The heating furnace also passes through gas pipeline and connect with combustion chamber.
Further, the heating furnace is connect by gas pipeline with the cyclone dust collectors；The whirlwind removes
Dirt device is connect by gas pipeline with combustion chamber, and cyclone dust collectors bottom is connect by ash discharge channel with melting furnace.
Further, the combustion chamber is sequentially connected with fume treatment facility, air-introduced machine and chimney.
Beneficial effects of the present invention: it is dried before fusing fly ash processing by 500~600 DEG C of pyrolysis, can avoid flying dust
Middle Ca (OH)2, Ca(OH) moisture of the generations such as Cl influences reducing atmosphere melting furnace wall refractory, extend the refractory material longevity
Life；Influence of the moisture content fluctuation to melting furnace fluctuation of operating conditions in flying dust is reduced simultaneously, and melting disposition operating condition is more stable, slag
Solidification effect is more preferable.For the electric power type melting furnace using graphite electrode as heat source, it also can avoid moisture and reacted with graphite, prolonged
The long graphite electrode service life.
Detailed description of the invention
It, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments recorded in the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is domestic garbage incineration flyash thermal gravimetric analysis curve figure.
Fig. 3 is Ca (OH)2, Ca(OH) Cl pyrolysis dehydration zero-g aircraft figure.
Specific embodiment
Technical solution of the present invention will be clearly and completely described by specific embodiment below.
As shown in Figure 1, melting disposal facility for a kind of novel household garbage flying ash of the invention includes pretreatment dress
Set 1, heating furnace 2, melting furnace 3, combustion chamber 4；The pretreatment unit 1 is connect with the heating furnace 2；The heating furnace
2 connect with the melting furnace 3；The heating furnace 2 is also connect by gas pipeline with combustion chamber 4.Heating furnace 2 passes through gas
Pipeline is connect with the cyclone dust collectors 5；The cyclone dust collectors 5 are connect by gas pipeline with combustion chamber 4, and whirlwind removes
5 bottom of dirt device is connect by ash discharge channel with melting furnace 3.Combustion chamber 4 and fume treatment facility 6, air-introduced machine 7 and chimney 8 are successively
Connection.
Melting furnace of the invention, furnace atmosphere are reducing atmosphere, and refractory material is C- base refractory material or the fire resisting of SiC system
Material.
Heating furnace of the invention, can using directly heat or indirect heating by the way of.It is preferred to select indirect heating
Mode can sufficiently decompose dioxin.
Novel household garbage flying ash melting method of disposal of the invention is as follows:
Contain the Ca (OH) not reacted completely in the flying dust (a) of domestic garbage incineration flyash dry-process deacidification technique trapping2And it is de-
The Ca(OH that sour process generates) Cl.After the pretreatment of flying dust compatibility, it is delivered to after being pyrolyzed drying in heating furnace, as shown in Figure 2,3,
Heat at 500 DEG C~600 DEG C, the Ca (OH) in flying dust2It is completely decomposed into CaO and H2O, Ca(OH) Cl decomposes generation completely
CaO、CaCl2And H2O, CaO, CaCl of generation2After presence is dried with pyrolysis in solid form in flying dust (b), H2O is with gaseous state shape
Formula enters in pyrolysis gas (c).The high-temperature gas (c) that heating furnace generates is sent to two combustions after cyclone dust collectors (5) dedusting
It burns in room, heat is fully utilized, and gas full combustion in dual firing chamber is disposed.Flying dust (b) row after heating furnace disposition
Out, the flying dust (d) captured with cyclone dust collectors (5) is sent to melt process in melting furnace together.Fusing fly ash handles heel row extremely
Dual firing chamber's burning disposition, the flue gas that dual firing chamber excludes are drawn to chimney by air-introduced machine and arrange after the processing of fume treatment facility is up to standard
It puts.The slag that fusing fly ash generates is water cooled or air-cooled forms the vitreum that utilizes of resourcebility.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to design of the invention
It is defined with range, without departing from the design concept of the invention, ordinary engineering and technical personnel is to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content is all documented in technical requirements book.
Claims (9)
1. a kind of novel household garbage flying ash melts method of disposal, it is characterised in that: flying dust is delivered to after pretreatment
After being pyrolyzed drying in heating furnace, then send to melting furnace to melt and dispose.
2. a kind of novel household garbage flying ash according to claim 1 melts method of disposal, it is characterised in that: heating
The high-temperature gas that furnace generates is sent into dual firing chamber and carries out full combustion disposition.
3. a kind of novel household garbage flying ash according to claim 2 melts method of disposal, it is characterised in that: heating
The high-temperature gas that furnace generates, is first dusted and is re-fed into dual firing chamber afterwards, and the flying dust of capture is sent into melting furnace and is disposed.
4. a kind of novel household garbage flying ash according to claim 1 melts method of disposal, it is characterised in that: flying dust
It is delivered in heating furnace after pretreatment, is pyrolyzed dry heat at 500 DEG C~600 DEG C；Ca (OH) in flying dust2、Ca
(OH) Cl is dehydrated completely wherein.
5. a kind of novel household garbage flying ash according to claim 1 melts method of disposal, it is characterised in that: melting
Furnace atmosphere is reducing atmosphere, and refractory material uses C- base refractory material or SiC series refractory material.
6. a kind of novel household garbage flying ash according to claim 1 melts method of disposal, it is characterised in that: described
Melting furnace atmosphere is reducing atmosphere, using graphite electrode as heat source.
7. a kind of novel household garbage flying ash melts disposal facility, it is characterised in that: including pretreatment unit (1), heating
Furnace (2), melting furnace (3), combustion chamber (4)；The pretreatment unit (1) is connect with the heating furnace (2)；The heating
Furnace (2) is connect with the melting furnace (3)；The heating furnace (2) is also connect by gas pipeline with combustion chamber (4).
8. a kind of novel household garbage flying ash according to claim 7 melts disposal facility, it is characterised in that: described
Heating furnace (2) connect with the cyclone dust collectors (5) by gas pipeline；The cyclone dust collectors (5) pass through gas
Pipeline is connect with combustion chamber (4), and cyclone dust collectors (5) bottom is connect by ash discharge channel with melting furnace (3).
9. a kind of novel household garbage flying ash according to claim 7 melts disposal facility, it is characterised in that: described
Combustion chamber (4) is sequentially connected with fume treatment facility (6), air-introduced machine (7) and chimney (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475962.5A CN110296422A (en) | 2019-06-03 | 2019-06-03 | A kind of novel household garbage flying ash melting method of disposal and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475962.5A CN110296422A (en) | 2019-06-03 | 2019-06-03 | A kind of novel household garbage flying ash melting method of disposal and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110296422A true CN110296422A (en) | 2019-10-01 |
Family
ID=68027443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910475962.5A Pending CN110296422A (en) | 2019-06-03 | 2019-06-03 | A kind of novel household garbage flying ash melting method of disposal and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110296422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174213A (en) * | 2020-01-22 | 2020-05-19 | 浙江大学 | Material stirring type oxygen-enriched melting device |
| CN111623353A (en) * | 2020-06-04 | 2020-09-04 | 苏州同和环保工程有限公司 | Melting reduction processing system to rubbish |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465791A (en) * | 2015-11-18 | 2016-04-06 | 北京中科通用能源环保有限责任公司 | Fly ash disposal system |
| CN205887648U (en) * | 2016-08-16 | 2017-01-18 | 中国环境科学研究院 | Be applied to incineration fly ash's pyrolysis oven |
| CN106402896A (en) * | 2016-11-10 | 2017-02-15 | 光大环境科技（中国）有限公司 | Waste incineration fly ash plasma melting treatment system |
| CN206478648U (en) * | 2017-02-20 | 2017-09-08 | 长沙超梵环境科技有限公司 | Domestic garbage pyrolysis gasification flying dust direct-fusing apparatus |
| CN206531067U (en) * | 2016-12-12 | 2017-09-29 | 神雾科技集团股份有限公司 | A kind of system of refuse pyrolysis gasification and melting |
| CN109351754A (en) * | 2018-10-29 | 2019-02-19 | 广东天源环境科技有限公司 | A kind of method and solid waste treatment system of solid waste processing |
-
2019
- 2019-06-03 CN CN201910475962.5A patent/CN110296422A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465791A (en) * | 2015-11-18 | 2016-04-06 | 北京中科通用能源环保有限责任公司 | Fly ash disposal system |
| CN205887648U (en) * | 2016-08-16 | 2017-01-18 | 中国环境科学研究院 | Be applied to incineration fly ash's pyrolysis oven |
| CN106402896A (en) * | 2016-11-10 | 2017-02-15 | 光大环境科技（中国）有限公司 | Waste incineration fly ash plasma melting treatment system |
| CN206531067U (en) * | 2016-12-12 | 2017-09-29 | 神雾科技集团股份有限公司 | A kind of system of refuse pyrolysis gasification and melting |
| CN206478648U (en) * | 2017-02-20 | 2017-09-08 | 长沙超梵环境科技有限公司 | Domestic garbage pyrolysis gasification flying dust direct-fusing apparatus |
| CN109351754A (en) * | 2018-10-29 | 2019-02-19 | 广东天源环境科技有限公司 | A kind of method and solid waste treatment system of solid waste processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174213A (en) * | 2020-01-22 | 2020-05-19 | 浙江大学 | Material stirring type oxygen-enriched melting device |
| CN111623353A (en) * | 2020-06-04 | 2020-09-04 | 苏州同和环保工程有限公司 | Melting reduction processing system to rubbish |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20191001 |