CN109282661A - Method for treating household garbage by hot blast furnace slag - Google Patents
Method for treating household garbage by hot blast furnace slag Download PDFInfo
- Publication number
- CN109282661A CN109282661A CN201811023832.XA CN201811023832A CN109282661A CN 109282661 A CN109282661 A CN 109282661A CN 201811023832 A CN201811023832 A CN 201811023832A CN 109282661 A CN109282661 A CN 109282661A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- furnace slag
- garbage
- hot blast
- flue gas
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 58
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003546 flue gas Substances 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000002918 waste heat Substances 0.000 claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 238000010248 power generation Methods 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000000855 fermentation Methods 0.000 claims description 5
- 230000004151 fermentation Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000004056 waste incineration Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- 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
本发明公开一种热态高炉渣处理生活垃圾的方法。热态高炉渣直接作为高温热源，可点燃垃圾，并与垃圾完成掺烧，形成的高温烟气经发电系统进行回收，提高垃圾焚烧发电量，间接实现高炉渣的余热回收。高炉渣与垃圾掺烧后形成的炉渣与高炉渣成分接近，不影响燃尽炉渣的综合利用。The invention discloses a method for treating domestic garbage with hot blast furnace slag. The hot blast furnace slag is directly used as a high-temperature heat source, which can ignite the garbage and complete the combustion with the garbage. The high-temperature flue gas formed is recovered by the power generation system, which increases the power generation of the garbage incineration and indirectly realizes the waste heat recovery of the blast furnace slag. The composition of blast furnace slag and the blast furnace slag formed by the mixing of blast furnace slag and garbage is close to that of the blast furnace slag, which does not affect the comprehensive utilization of the burnt-out slag.
Description
Technical field
The present invention relates to blast furnace slag waste heat recovery technology field, it is particularly suitable in grate furnace using at thermal-state blast furnace slag
The method for managing house refuse.
Background technique
Blast furnace slag is the by-product of blast furnace process.Its main component is calcium oxide, magnesia, aluminum oxide, titanium dioxide
Silicon etc. can replace natural rock production cement or slag differential etc. to be used for building material product.The tapping temperature of blast furnace slag is greater than 1500
DEG C, the heat contained by 1 ton of blast furnace slag is equivalent to 64kg standard coal, and existing processing method uses water quenching technology, in addition to few portion
Northern Enterprises are divided to carry out outside heating in winter using the waste heat of washing slag water, substantially without other effective waste heat recovery modes.Cause
This, not only the sensible heat of blast furnace slag and latent heat can not recycle, and cause great energy waste.And INBA method flush slag technique
The a large amount of wastes for also causing water resource also result in serious pollution to big gas and water and soil.Through investigating, exploitation is high both at home and abroad
The research of clinker dry type heat recovery technology is more, but does not have the report of industrial applications always.
As China human mortality increases sharply and improvement of living standard, house refuse, which has become, influences China's environment
Major issue.Waste incineration because efficient quick, volume reduction is significant, energy utilization rate is high the advantages that, become the normal of domestic rubbish disposal
With one of mode.And incineration treatment of garbage is the most common waste disposal method of current foreign applications, the great advantage of the method
It is that garbage as resource and minimizing degree for the treatment of are high, it has also become the main path and power industry of developed country's processing house refuse
Important component.In western developed country, the application of garbage incineration technology has had nearly 130 years history, and mesh
Before be still considered as most effective, economic one of technology of garbage disposal.
Garbage incineration process mainly includes fire grate oven process, ciculation fluidized bed process, pyrolysismethod, evaporating method etc., wherein grate furnace
The application percentage highest of method.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of thermal-state blast furnace slag processing house refuse, and heat is utilized in grate furnace
The house refuse of state blast furnace Slag treatment with thermal-state blast furnace slag waste-heat and promotes incineration firing, reduces the waste incineration energy certainly
Body consumption, improves waste incineration and generating electricity amount.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of method of thermal-state blast furnace slag processing house refuse, comprising the following steps:
1) rubbish pre-processes, and carries out dehydration fermentation.
2) raw material enters furnace: rubbish after fermentation and thermal-state blast furnace slag are added to grate furnace by 2 independent feed inlets
On fire grate.Rubbish enters furnace prior to thermal-state blast furnace slag after fermentation.Blast furnace slag is by cinder ladle discharge port continuous charging.
3) incineration firing.Thermal-state blast furnace slag ignites rubbish under combustion air effect, and mixes and mix burning.
4) fume treatment.The recovered pipeline of the high-temperature flue gas generated after burning enters fume recovery system, particulate matter shape
At flying dust, hot wind enters electricity generation system power generation, then the outlet after desulfurization dust-removing technique is up to standard.
5) clinker outlet.After-flame clinker passes through the exclusive row of lower furnace.
It is moved from top to bottom into the rubbish in grate furnace by gravity, and combustion air blasts furnace by air blower from bottom to top
It is interior, top-down drying layer, oxidizing fire layer, slag blanket are sequentially formed in furnace, pass through dry, the volatilization gas to garbage dewatering
The gradually interim reaction of combustion by evaporation and fixed carbon burning.
The fume treatment is generated after waste incineration using smoke settlement-waste heat recycling-fume desulfurizing and dedusting technology
High-temperature flue gas initially enter expansion chamber and carry out continuity burning, then preliminary cooling and recovery waste heat, then use semidry method depickling
With bag-type dust combine smoke processing system, remove flue gas in solid particle, oxysulfide, nitrogen oxides, hydrogen chloride, two
The harmful substances such as English are disliked to reduce environmental pollution to reach the standard limit of smog release of national regulation.
The thermal-state blast furnace slag additional amount is the 15%-50% of rubbish, it can be achieved that rubbish ignites and stablizes burning, preferably
Additional amount is 20%-30%.
The blast furnace slag temperature is 1300-1500 DEG C, and preferable temperature is 1350-1400 DEG C.Blast furnace slag temperature is higher, lights
Burning effect is better with mixing, but transports heat preservation pressure and increase, and cost is excessively high；Blast furnace slag temperature is too low, and ignition ability is poor, or even can
The theoretical temperature combustion of rubbish can be reduced, and after blast furnace slag viscosity increases, flow control and mixing mix burn effect it is obvious under
Drop.
Compared with prior art, the beneficial effects of the present invention are:
1) thermal-state blast furnace slag can light rubbish directly as high temperature heat source, and mix burning, the high temperature cigarette of formation with rubbish completion
Gas is recycled through electricity generation system, improves waste incineration and generating electricity amount, realizes the waste heat recycling of blast furnace slag indirectly.
2) blast furnace slag and rubbish mix the clinker formed after burning and blast furnace slag composition is close, do not influence the comprehensive benefit of after-flame clinker
With.
The present invention has obvious economic and environmental benefits, and in industry has very big popularization practical value.
Specific embodiment
It is illustrated combined with specific embodiments below:
Specific embodiments of the present invention will be further explained below:
Embodiment 1
A kind of method of thermal-state blast furnace slag processing house refuse, comprising the following steps:
1) rubbish pre-processes, and carries out dehydration fermentation.
2) rubbish, thermal-state blast furnace slag enter furnace respectively.Rubbish and thermal-state blast furnace slag pass through 2 independent feed inlets after fermenting
It is spread on fire grate.Wherein thermal-state blast furnace slag feeding inlet is located at rubbish feeding inlet upper back region.Feeding blast furnace slag temperature is 1400
DEG C, additional amount is the 25% of rubbish.Blast furnace slag is by cinder ladle lower part discharge port continuous charging.
3) incineration firing.Thermal-state blast furnace slag ignites rubbish under combustion air effect, and mixes and mix burning.
4) fume treatment.The recovered pipeline of the high-temperature flue gas generated after burning enters fume recovery system, particulate matter shape
At flying dust, hot wind enters electricity generation system power generation, then the outlet after desulfurization dust-removing technique is up to standard.
5) clinker outlet.After-flame clinker passes through the exclusive row of lower furnace.
It is moved from top to bottom into the rubbish in grate furnace by gravity, and combustion air blasts furnace by air blower from bottom to top
It is interior, top-down drying layer, oxidizing fire layer, slag blanket are sequentially formed in furnace, pass through dry, the volatilization gas to garbage dewatering
The gradually interim reaction of combustion by evaporation and fixed carbon burning.
The fume treatment is generated after waste incineration using smoke settlement-waste heat recycling-fume desulfurizing and dedusting technology
High-temperature flue gas initially enter expansion chamber and carry out continuity burning, then preliminary cooling and recovery waste heat, then use semidry method depickling
With bag-type dust combine smoke processing system, remove flue gas in solid particle, oxysulfide, nitrogen oxides, hydrogen chloride, two
The harmful substances such as English are disliked to reduce environmental pollution to reach the standard limit of smog release of national regulation.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023832.XA CN109282661B (en) | 2018-09-04 | 2018-09-04 | Method for treating household garbage by hot blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023832.XA CN109282661B (en) | 2018-09-04 | 2018-09-04 | Method for treating household garbage by hot blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109282661A true CN109282661A (en) | 2019-01-29 |
| CN109282661B CN109282661B (en) | 2020-10-27 |
Family
ID=65184419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811023832.XA Active CN109282661B (en) | 2018-09-04 | 2018-09-04 | Method for treating household garbage by hot blast furnace slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109282661B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043867A (en) * | 2019-10-28 | 2020-04-21 | 鞍钢股份有限公司 | A system and method for utilizing iron-smelting waste heat treatment of domestic waste |
| CN114369691A (en) * | 2022-01-04 | 2022-04-19 | 中冶南方工程技术有限公司 | Urban solid waste and iron making cooperative system and method based on blast furnace slag waste heat utilization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111043867B (en) * | 2019-10-28 | 2021-09-14 | 鞍钢股份有限公司 | System and method for treating household garbage by utilizing ironmaking waste heat |
| CN114369691A (en) * | 2022-01-04 | 2022-04-19 | 中冶南方工程技术有限公司 | Urban solid waste and iron making cooperative system and method based on blast furnace slag waste heat utilization |
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| Publication number | Publication date |
|---|---|
| CN109282661B (en) | 2020-10-27 |
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