CN1118664C - Molten slag incinerator for treating city domestic refuse and its treatment process - Google Patents
Molten slag incinerator for treating city domestic refuse and its treatment process Download PDFInfo
- Publication number
- CN1118664C CN1118664C CN99122639A CN99122639A CN1118664C CN 1118664 C CN1118664 C CN 1118664C CN 99122639 A CN99122639 A CN 99122639A CN 99122639 A CN99122639 A CN 99122639A CN 1118664 C CN1118664 C CN 1118664C
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- molten slag
- chamber
- incinerator
- slag
- combustion
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Gasification And Melting Of Waste (AREA)
Abstract
The present invention discloses a molten slag incinerator for treating urban domestic refuse and a treatment technical method of the molten slag incinerator. The present invention is characterized in that the molten slag incinerator is formed by the series connection of a burning chamber, a settling chamber and a reburning chamber, wherein the bottom of the burning chamber is always provided with a molten slag layer which is provided with an oxygen lance, and a coal powder spraying gun is arranged in the burning chamber which is provided with a carburetor. In the technical method, original refuse is added to the molten slag incinerator, and the oxygen lance is used for supplying oxygen-enriched burning supporting; after the refuse is burnt, noncombustible objects are in the state of molten slag, and the content of blown-in oxygen is from 21 to 100%. The present invention has the characteristic of enhancing the heat efficiency and the treating capacity of the molten slag incinerator.
Description
The present invention relates to the destruction of solid waste or change solid waste into useful or harmless thing and technical field of burner, particularly urban garbage disposal molten slag incinerator and treatment process method thereof.
At present, urban garbage disposal has become a great difficult problem.The method of garbage disposal both at home and abroad can be divided into three kinds: landfill method, composting process and burning method.Landfill method will take a large amount of soils, and causes air and phreatic secondary pollution easily.Composting process also is difficult to extensively promote.In recent years, burning method handle municipal refuse (comprising house refuse and extraordinary rubbish) all over the world the growing main flow trend that is.
The process unit of burning method is varied, mainly is that external industrially developed country has.Some is commercialization already, domestic this type of device of existing introduction.But all up to now burning process all have a common ground, both incineration temperature＜1300 ℃, dry ash extraction.These apparatus and process are to really effectively handling, reach the purpose that subtracts appearanceization, innoxious and resource through the high heating value of sorting, the domestic waste of low moisture content.The characteristics that China's domestic waste constitutes are: high-moisture (40-60%), lower calorific value (4000-6000kj/kg), and also the overwhelming majority is the crude waste of not handling through classification.Adopt the burning process of domestic and foreign current that Chinese rubbish is carried out burning disposal, the thermal efficiency is low, disposal ability low and the processing cost height.In addition, the introducing equipment one-time investment is big, is difficult to the repayment that reaches good.
The objective of the invention is characteristics, be intended to improve the processing cost of the incinerator thermal efficiency and disposal ability, reduction rubbish, and provide a kind of urban garbage disposal with molten slag incinerator and treatment process method thereof at China's municipal refuse.
Technical scheme of the present invention is finished like this.
A kind of urban garbage disposal molten slag incinerator (see figure 1), it is characterized in that: it is by combustion chamber, expansion chamber, combustion chambers in tandem constitutes again, the bottom, chamber of combustion chamber 6 is the bucket type, the bottom of bucket type is equipped with slag-drip opening 1, maintain molten slag layer 2, boiling bed 4 in the bucket type, furnace shell 9 is a water-cooled dross wall, penetrate slag blanket by the Lower Half of furnace shell 9 and be provided with lance 3, top at slag blanket also is provided with lance 5, at the middle part of combustion chamber garbage inlet 7 is arranged, several Coal powder spray rifles 8 are established at 6 middle part in the combustion chamber; Expansion chamber 17 is connected with combustion chamber 6 and is connected, and at the expansion chamber 17 and the top of combustion chamber 6 vaporizer 10 is housed, and vaporizer outlet and inlet pick out the outside of furnace shell 9, and ash discharging hole 18 is equipped with in expansion chamber 17 bottoms; The bottom of expansion chamber 17 is connected in series with the bottom of combustion heat-exchange chamber 15 again and communicates, its shell is a water-cooling wall 16, in the combustion heat-exchange chamber 15 superheater 11 is being housed again, the import and export of superheater 11 picks out the furnace shell outside, combustion heat-exchange chamber 15 first halves are provided with multi-layer air rifle 14 again, a side is equipped with oblique folding smoke pipe 13 in the middle part of combustion heat-exchange chamber again, and top, combustion heat-exchange chamber is provided with exhaust opening 12 again.
Adopt molten slag incinerator to handle the process (see figure 2) of domestic waste, it is characterized in that: crude waste is through preliminary treatment or without preliminary treatment, add in the molten slag incinerator, molten slag incinerator is supplied with oxygen-enriched combustion-supporting by lance, the coefficient of excess of combustion-supporting gas is 0.7----1.2, noncombustibles slag state after the waste incineration, and the oxygen rifle position of furnace bottom is in the middle and upper part of molten slag layer, the oxygen that blasts makes the slag high degree of agitation, and the oxygen content that blasts is in the 21----100% scope; The top of molten slag incinerator is provided with coal powder lance and makes maintenance reducing condition in the stove, avoids the generation of nitrogen oxide, and the temperature fluctuation of furnace high-temperature district is at 1650-1850 ℃.The temperature fluctuation of furnace bottom slag is at 1400-1550 ℃, and the heat that waste incineration discharges can generate electricity by water cooled furnace wall, vaporizer and superheater generation steam, and slag enters detritus tank through shrend, can make construction material; Flue gas effluxes after treatment.
Characteristics of the present invention are to have improved the thermal efficiency and the disposal ability of molten slag incinerator, reduced the processing cost of municipal refuse, molten slag incinerator simple in structure, function is strong, efficient is high, treatment process is simple, flow process is short, the ability of disposal of refuse is big, all equipment can be completely achieved nationalization.
Description of drawings
Fig. 1 is urban garbage disposal molten slag incinerator structural representation.
Fig. 2 is a urban garbage disposal process block diagram.
Describe embodiment in detail below in conjunction with accompanying drawing
Embodiment
Urban garbage disposal molten slag incinerator (see figure 1), it is by combustion chamber, expansion chamber, combustion chambers in tandem constitutes again, the bottom, chamber of combustion chamber 6 is the bucket type, the bottom of bucket type is equipped with slag-drip opening 1, maintains molten slag layer 2, boiling bed 4 in the bucket type, and furnace shell 9 is a water-cooled dross wall, penetrate slag blanket by the Lower Half of furnace shell 9 and be provided with lance 3, top at slag blanket also is provided with lance 5, at the middle part of combustion chamber garbage inlet 7 is arranged, and several Coal powder spray rifles 8 are established at 6 middle part in the combustion chamber; Expansion chamber 17 is connected with combustion chamber 6 and is connected, and at the expansion chamber 17 and the top of combustion chamber 6 vaporizer 10 is housed, and vaporizer outlet and inlet pick out the outside of furnace shell 9, and ash discharging hole 18 is equipped with in expansion chamber 17 bottoms; The bottom of expansion chamber 17 is connected in series with the bottom of combustion heat-exchange chamber 15 again and communicates, its shell is a water-cooling wall 16, in the combustion heat-exchange chamber 15 superheater 11 is being housed again, the import and export of superheater 11 picks out the furnace shell outside, combustion heat-exchange chamber 15 first halves are provided with multi-layer air rifle 14 again, a side is equipped with oblique folding smoke pipe 13 in the middle part of combustion heat-exchange chamber again, and top, combustion heat-exchange chamber is provided with exhaust opening 12 again.
Adopt molten slag incinerator to handle the process (see figure 2) of domestic waste, crude waste is through preliminary treatment or without preliminary treatment, add in the molten slag incinerator, molten slag incinerator is supplied with oxygen-enriched combustion-supporting by lance, the coefficient of excess of combustion-supporting gas is 0.7----1.2, and noncombustibles is the slag state after the waste incineration, and the oxygen rifle position of furnace bottom is in the middle and upper part of molten slag layer, the oxygen that blasts makes the slag high degree of agitation, and the oxygen content that blasts is in the 21----100% scope; The top of molten slag incinerator is provided with coal powder lance and makes maintenance reducing condition in the stove, avoids the generation of nitrogen oxide, and the temperature fluctuation of furnace high-temperature district is at 1650-1850 ℃.The temperature fluctuation of furnace bottom slag is at 1400-1550 ℃, and the heat that waste incineration discharges can generate electricity by water cooled furnace wall, vaporizer and superheater generation steam, and slag enters detritus tank through shrend, can make construction material; Flue gas effluxes after treatment.
Claims (3)
1. urban garbage disposal molten slag incinerator, it is characterized in that: it is by combustion chamber, expansion chamber, combustion chambers in tandem constitutes again, the bottom, chamber of combustion chamber (6) is the bucket type, the bottom of bucket type is equipped with slag-drip opening (1), maintain molten slag layer (2), boiling bed in the bucket type, penetrate slag blanket by the Lower Half of furnace shell (9) and be provided with lance (3), also be provided with lance (5) on the top of slag blanket, several Coal powder spray rifles (8) are established at the middle part of (6) in the combustion chamber, and combustion heat-exchange chamber (15) first half is provided with multi-layer air rifle (14) again; Furnace shell (9) is a water-cooled dross wall, garbage inlet (7) is arranged at the middle part of combustion chamber, expansion chamber (17) is connected with combustion chamber (6) and is connected, at the expansion chamber (17) and the top of combustion chamber (6) vaporizer (10) is housed, vaporizer outlet and inlet pick out the outside of furnace shell (9), and ash discharging hole (18) is equipped with in expansion chamber (17) bottom; The bottom of expansion chamber (17) is connected in series with the bottom of combustion heat-exchange chamber (15) again and communicates, its shell is water-cooling wall (16), in combustion heat-exchange chamber (15) superheater (11) is being housed again, the import and export of superheater (11) picks out the furnace shell outside, a side is equipped with oblique folding pipe (13) in the middle part of combustion heat-exchange chamber again, and top, combustion heat-exchange chamber is provided with exhaust opening (12) again.
2. the described urban garbage disposal molten slag incinerator of claim 1, its process, be characterised in that: crude waste is through preliminary treatment or without preliminary treatment, add in the molten slag incinerator, molten slag incinerator is supplied with oxygen-enriched combustion-supporting by lance, and noncombustibles is the slag state after the waste incineration, and the oxygen rifle position of furnace bottom is in the middle and upper part of molten slag layer, the oxygen that blasts makes the slag high degree of agitation, and the oxygen content that blasts is in the 21----100% scope; The top of molten slag incinerator is provided with coal powder lance and makes maintenance reducing condition in the stove, avoid the generation of nitrogen oxide, the heat that waste incineration discharges, producing steam generation steam by water cooled furnace wall, vaporizer and superheater can generate electricity, slag is sent into detritus tank through shrend, can make construction material; Flue gas effluxes after treatment.
3. molten slag incinerator according to claim 2 is handled the process of domestic waste, and it is characterized in that: the temperature fluctuation of furnace high-temperature district is at 1650-1850 ℃, and the temperature fluctuation of furnace bottom slag is at 1400-1550 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99122639A CN1118664C (en) | 1999-12-17 | 1999-12-17 | Molten slag incinerator for treating city domestic refuse and its treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99122639A CN1118664C (en) | 1999-12-17 | 1999-12-17 | Molten slag incinerator for treating city domestic refuse and its treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1256386A CN1256386A (en) | 2000-06-14 |
| CN1118664C true CN1118664C (en) | 2003-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99122639A Expired - Fee Related CN1118664C (en) | 1999-12-17 | 1999-12-17 | Molten slag incinerator for treating city domestic refuse and its treatment process |
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| Country | Link |
|---|---|
| CN (1) | CN1118664C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367088A (en) * | 2008-09-27 | 2009-02-18 | 袁永扬 | Garbage treatment method and comprehensive utilization |
| CN108412614A (en) * | 2018-04-09 | 2018-08-17 | 李良杰 | Convenient combustion power generation device |
| CN110207128B (en) * | 2019-07-10 | 2023-12-22 | 赤峰红山圣火生物质能科技开发有限公司 | Garbage incinerator |
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1999
- 1999-12-17 CN CN99122639A patent/CN1118664C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1256386A (en) | 2000-06-14 |
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