CN1302973A - Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation - Google Patents
Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation Download PDFInfo
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- CN1302973A CN1302973A CN 01107088 CN01107088A CN1302973A CN 1302973 A CN1302973 A CN 1302973A CN 01107088 CN01107088 CN 01107088 CN 01107088 A CN01107088 A CN 01107088A CN 1302973 A CN1302973 A CN 1302973A
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- combustion
- gasification
- oxygen
- life garbage
- top blowing
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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
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Abstract
A technology for treating life garbage and generating electricity includes steps as collecting the life garbage, per-treating, adding chlorine and sulfur fixating agents and combustion promoter, gasifying combustion to obtain valuable alloy, molten slags, combustible gas and fume, using the said combustible gas and fume for surplus-heat boiler to generate steam, using the steam to generate electricity, and treating the fume for directly exhaustion. Its advantages are high adaptibility to life garbage treatment, high efficiency to generate electricity and eliminating harmful gases including dioxin.
Description
Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and generation technology thereof are a kind of technology of not only having handled domestic waste but also having utilized the heat energy power-generating that produces in the processing procedure.
Increasing along with progress, the urban population of expanding economy, society (according to the prediction of urban construction and development department of nation-building portion, China's urban population quantity will reach 6～700,000,000 in following 10 years, account for China's total population quantity about 50%) and the improving constantly of people's living standard, the house refuse amount that produce every day will increase.It is reported, the annual production of domestic waste per capita of China at present reach 400kg/ (people. year), and annual average rate of increase is 7～10%, the house refuse year amount of clearing in 668 cities of 1999 China reaches 1.14 hundred million tons, the domestic waste storage is about more than 60 hundred million tons, and rubbish appropriation of land area has surpassed 500,000,000 m
3, existing more than 200 city, the whole nation surrounded by rubbish.
China's technology of garbage disposal is also quite backward compared with developed countries at present, and most of heap that adopts buries processing, and part is used for combustion power generation etc., heap buries processing and not only takies a large amount of soils, and soil, underground water, atmosphere etc. are worked the mischief, serious environment pollution jeopardizes the human living space.The burning city domestic garbage treatment technology can reach and subtract appearanceization, innoxious and resource, thereby extremely the parent of developed country looks at.Existing domestic incineration treatment of garbage mode mostly is the fire grate combustion-type greatly, adopts fluidized combustion on a small quantity, the overall technology level is lower, on the other hand along with the increase of macromolecular compound content such as plastics in the rubbish, this traditional mode itself can produce new toxic pollutant (as dioxin dioxins class etc.) again in processing procedure, lime-ash after handling simultaneously fails again to make full use of, the valuable metal in the rubbish does not have fine recovery yet, so existing treatment technology can not adapt to the human kind sustainable development needs.
In order to alleviate human survival environment is brought the pressure of destruction, developed country has begun to advocate and striving for the zero-emission (zero emission) of garbage disposal, and garbage incineration technology has developed into the gasification and melting incineration generation technology of comprehensive comprehensive utilization.Characteristics according to the existing technology of garbage disposal of developed country and China's domestic waste, we have proposed domestic waste novel melting gasification, and combustion generation technology, this technology not only can be controlled the generation of dioxin-like chemical, but also can realize the comprehensive utilization of rubbish.
The objective of the invention is: when handling domestic waste, utilize the steam that produces to generate electricity, that realizes garbage disposal subtracts appearanceization, innoxious and resource.
The present invention is achieved by the following technical solutions.
Fig. 1 is a process chart of the present invention.
Domestic waste is everywhere collected, be transported to destructor plant stacking place, some large-scale house refuses (as discarded desk, sofa etc.) are carried out coarse crushing, by batcher rubbish is sent to then and carries out fusion and gasification, and combustion in the top blowing of oxygen, direct fusion and gasification, and combustion stove, add solid sulphur, solid chlorine and auxiliary fuel and industrial oxygen simultaneously, sulphur-fixing agent can be CaCO in the additive
3Or CAO, addition to guarantee CA/S (sulphur is content in the rubbish) be not less than 1.5 and liquid slag in CaO/SiO
2Be 0.8～1.4, chlorine-solidifying agent can have been adopted soda, and addition can be 3～7% of rubbish gross weight, and the oxygen combustion of auxiliary fuel is than should be 0.6～0.8, and the total oxygen combustion that comprises secondary combustion chamber is than should be 1.1～1.3; Auxiliary fuel can be coal, and addition is decided on the house refuse calorific value, is generally 0～30% of rubbish total amount, and valuable metal is recycled by forming alloy behind fusion and gasification, and combustion; Can be used as building materials after liquid slag is discharged is fully utilized; Fuel gas that produces and flue gas and the auxiliary air after preheating go into respectively in the waste heat boiler (can attach economizer and air preheater) to carry out second-time burning, the steam that produces generates electricity by generating set, the flying dust of generation send into again carry out in the top blowing of oxygen, direct fusion and gasification, and combustion stove recycling; The flue gas that is produced by waste heat pot family carries out the gas cleaning processing, will add the purification with medicament simultaneously, and medicament can be sulfide lime and active carbon, and the flying dust of generation carries out harmless treatment; Flue gas after purified treatment can be handled according to the environmental requirement of locality, can send into reheater by air-introduced machine, carries out the catalytic denitration reaction treatment, and the flue gas after handling through denitration just can be by smoke stack emission.
Fig. 2 is a top blowing of oxygen, direct fusion and gasification, and combustion for life garbage power generation system structure schematic diagram, the rubbish that collection and treatment is good enters the fusion and gasification, and combustion stove from material inlet 1, industrial oxygen is blown into from furnace roof by oxygen lance 18, auxiliary fuel is also fed through oxygen lance by auxiliary fuel bucket 21, the valuable metal alloy is discharged from furnace bottom floss hole 20 behind fusion and gasification, and combustion, liquid slag is discharged through the outlet of furnace bottom, fuel gas that produces and flue gas and the auxiliary air after preheating enter respectively and carry out second-time burning in the waste heat boiler 4, the steam that produces is by generating set 7 generatings, the gas cleaning treating apparatus 12 that the flue gas that is produced by waste heat boiler enters the band quench tower carries out harmless processing, if also do not reach environmental requirement, can be with flue gas air-introduced machine 13, introduce denitration reaction tower 14 the breaking of band reheater, denitration is handled, and the flue gas after denitration is discharged through chimney 15.
The fusion and gasification, and combustion stove has been that 00259909.0 reality has in the novel patent application detailed description is arranged at the applicant's application number.
The advantage that has of the present invention compared with prior art:
1, the adaptability that various application of city life garbage are handled is strong; The moisture of rubbish, thickness etc. are not had strict requirement, and the auxiliary fuel addition is few, if refuse thermal value is higher than 6000kJ/kg and then can need auxiliary fuel;
2, technological process is short, and the fusion and gasification, and combustion furnace structure is simple, the furnace bed index height, capital expenditure take with operating cost than low about 20% of similar technology;
3, residual heat generating efficiency height can reach about 30%;
4, fire box temperature can reach more than 1400 ℃, and flue dust and exhaust gas volumn are little, and the discharge capacity of dioxin is low, is generally 0.01ng-TEQ/Nm
3About, liquid slag can regeneration, and valuable metal is easy to reclaim, and is minimum to second environmental pollution;
That 5, has realized garbage disposal subtracts appearanceization, innoxious and resource.
Fig. 1 is a process chart of the present invention, and Fig. 2 is this process system structural representation, and 1 is material inlet among the figure, the 2nd, fusion and gasification, and combustion stove, the 3rd, secondary combustion chamber, the 4th, waste heat boiler, the 5th, vapor superheater, the 6th, boiler-steam dome, the 7th, generating set, the 8th, blower fan, the 9th, air gives hot device, the 10th, economizer, the 11st, purify medicament, the 12nd, the gas cleaning treating apparatus of band quench tower, the 13rd, air-introduced machine, the 14th, the denitration reaction tower of band reheater, the 15th, chimney, the 16th, boiler feedwater, the 17th, secondary hot-air, the 18th, oxygen lance, the 19th, liquid slag outlet, the 20th, the outlet of valuable metal alloy, the 21st, auxiliary fuel bucket, the 22nd, industrial oxygen, the 23rd, return the flying dust of melting furnace.
Embodiment one
1, implementation condition
Fusion and gasification, and combustion stove internal diameter is 0.9m, and the stove height is 3.2m, and hearth area is 0.71m
2, sulphur-fixing agent is CaCO
3, addition Ca/S is 1.8; Chlorine-solidifying agent adopts soda, and addition is 7%; The combustion of the oxygen of auxiliary fuel is than being 0.7, and the total oxygen that comprises secondary combustion chamber fires than being 1.15; Auxiliary fuel is a coal, and addition is 18% of a rubbish total amount; Oxygen rifle pressure is 1.0Mpa.
The composition of house refuse (as fired basis):
Moisture 45%, ash content 27%, fixed carbon 16%, hydrogen 2.5%, oxygen 8.5%, nitrogen 0.56%, sulphur 0.04%, chlorine 0.4%;
2. result of implementation
Melt-combustion temperature: 1453 ℃;
Combustible gas component;
N
258.2％,CO
27.6％,CO
27.2％,H
25.4％,CH
41.6％；
Fuel gas temperature: 1236 ℃;
The composition of liquid slag:
SiO
2?42.3％,Cao?25.4％,Al
2O
3?26.7％,MgO?1.7％,Na
2O?3.2％,K
2O0.5％.Fe
2O
3?0.2％
Embodiment two
1, implementation condition
Fusion and gasification, and combustion stove internal diameter is 0.9m, and the stove height is 3.2m, and hearth area is 0.71m
2, sulphur-fixing agent is CaO, addition Ca/S is 1.9; Chlorine-solidifying agent is a soda, and addition is 6%; The combustion of the oxygen of auxiliary fuel is than being 0.75, and the oxygen that comprises secondary combustion chamber fires than being 1.2; Auxiliary fuel is a coal, and addition is 20%; Oxygen rifle pressure is 1.1Mpa.
The composition of house refuse (as fired basis):
Moisture 47%, ash content 27%, fixed carbon 14%, hydrogen 2.4%, oxygen 8.6%, nitrogen 0.54%
2, result of implementation
Melt-combustion temperature: 1427 ℃;
Combustible gas component:
N
2?57.1％,CO
2?8.4％,CO?27.4％,H
2?5.6％,CH
4?1.5％；
Fuel gas temperature: 1205 ℃;
The composition of liquid slag:
SiO
2?41.7％,CaO?26.1％,Al
2O
3?26.8％,MgO?1.5％,Na
2O?3.1％,K
2O?0.5％,
Fe
2O
3 0.3％
Claims (6)
1, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and generation technology thereof, it is characterized in that: with domestic waste collection, large-scale house refuse is sent into after coarse crushing and is carried out fusion and gasification, and combustion in the fusion and gasification, and combustion stove, in combustion furnace, add simultaneously sulphur-fixing agent, chlorine-solidifying agent and auxiliary fuel and industrial oxygen, output valuable metal alloy after melt-combustion finishes, liquid slag, imflammable gas and flue gas, imflammable gas and flue gas and the auxiliary air after giving heat are sent into respectively and are carried out second-time burning in the waste heat boiler, the steam that produces generates electricity by generating set, the flying dust that produces is sent into the burning of melt-combustion furnace gas again, flue gas that is produced by waste heat boiler and flying dust enter atmosphere again through harmless treatment.
2, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage according to claim 1 and generation technology thereof is characterized in that sulphur-fixing agent is calcium carbonate or calcium oxide, and addition guarantees that Ca/s is not less than 1.5, the CaO/SiO in the liquid slag
20.8-1.4.
3, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage according to claim 1 and generation technology thereof is characterized in that: chlorine-solidifying agent is 3-7% (accounting for the percentage of rubbish gross weight) for the soda addition.
4, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage according to claim 1 and generation technology thereof is characterized in that: auxiliary fuel is a coal, and addition is 0-30% (accounting for the percentage of rubbish gross weight).
5, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage stove according to claim 1 is characterized in that: add economizer and air and give hot device on waste heat boiler.
6, top blowing of oxygen, direct fusion and gasification, and combustion for life garbage stove according to claim 1 is characterized in that: handle the flue gas that waste heat boiler produces with sulfide lime and active carbon purifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01107088.9A CN1222713C (en) | 2001-02-01 | 2001-02-01 | Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01107088.9A CN1222713C (en) | 2001-02-01 | 2001-02-01 | Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1302973A true CN1302973A (en) | 2001-07-11 |
| CN1222713C CN1222713C (en) | 2005-10-12 |
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ID=4656041
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01107088.9A Expired - Fee Related CN1222713C (en) | 2001-02-01 | 2001-02-01 | Top blowing of oxygen, direct fusion and gasification, and combustion for life garbage and its technology for electric generation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307387C (en) * | 2004-12-08 | 2007-03-28 | 杭州华章电气工程有限公司 | Method for removing ink from waste paper by firing |
| CN102330990A (en) * | 2011-04-28 | 2012-01-25 | 刘宗庆 | Production process for efficiently and cleanly utilizing domestic garbage and sludge |
| CN105003920A (en) * | 2010-11-15 | 2015-10-28 | 生物量制品有限责任公司 | System and method for managing and using excessive corn residues |
| CN105864782A (en) * | 2016-04-26 | 2016-08-17 | 山东大学 | Device and method for heating and melting rubbish under oxygen-rich condition |
| CN106765146A (en) * | 2016-12-30 | 2017-05-31 | 重庆科技学院 | Secondary pollutant control system based on waste gasification melt-combustion |
| CN107363072A (en) * | 2017-06-30 | 2017-11-21 | 中国恩菲工程技术有限公司 | The fused bath smelting method of waste |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424415C (en) * | 2006-06-30 | 2008-10-08 | 重庆大学 | Incineration treating method and system for gasifying and melting domestic waste from city |
-
2001
- 2001-02-01 CN CN01107088.9A patent/CN1222713C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307387C (en) * | 2004-12-08 | 2007-03-28 | 杭州华章电气工程有限公司 | Method for removing ink from waste paper by firing |
| CN105003920A (en) * | 2010-11-15 | 2015-10-28 | 生物量制品有限责任公司 | System and method for managing and using excessive corn residues |
| CN105003920B (en) * | 2010-11-15 | 2021-02-26 | 生物量制品有限责任公司 | System and method for managing and utilizing excess corn residue |
| CN102330990A (en) * | 2011-04-28 | 2012-01-25 | 刘宗庆 | Production process for efficiently and cleanly utilizing domestic garbage and sludge |
| CN105864782A (en) * | 2016-04-26 | 2016-08-17 | 山东大学 | Device and method for heating and melting rubbish under oxygen-rich condition |
| CN106765146A (en) * | 2016-12-30 | 2017-05-31 | 重庆科技学院 | Secondary pollutant control system based on waste gasification melt-combustion |
| CN107363072A (en) * | 2017-06-30 | 2017-11-21 | 中国恩菲工程技术有限公司 | The fused bath smelting method of waste |
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| Publication number | Publication date |
|---|---|
| CN1222713C (en) | 2005-10-12 |
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