CN113883529A - Immediate circulation treatment technology and method for incineration fly ash of industrial kiln incineration waste - Google Patents
Immediate circulation treatment technology and method for incineration fly ash of industrial kiln incineration waste Download PDFInfo
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- CN113883529A CN113883529A CN202010623546.8A CN202010623546A CN113883529A CN 113883529 A CN113883529 A CN 113883529A CN 202010623546 A CN202010623546 A CN 202010623546A CN 113883529 A CN113883529 A CN 113883529A
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- incineration
- fly ash
- waste
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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
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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
- F23G5/44—Details; Accessories
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- 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
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- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
An instant closed circulation treatment technology and method for incineration fly ash of incineration waste of an industrial furnace relate to the field of environmental protection and new industrial technology, and mainly carry out circulation treatment on dust fly ash collected by a dust and smoke treatment system of the incineration waste, oil sludge and the like of the industrial furnace. The quantity of incineration waste per year in China is over hundred million tons, not only a large amount of residues are generated, but also millions of tons of incineration fly ash are generated, and the fly ash contains toxic and harmful substances such as dioxin and the like, and is listed as dangerous waste by the nation. It is mainly delivered to units with hazardous waste disposal licenses for landfill disposal after solidification. On the basis of the incineration process principle of the industrial kiln, the invention adds the fly ash immediate closed circulation treatment equipment system after the incineration fly ash collection system to realize the immediate, continuous and uniform treatment of fly ash, and the fly ash is incinerated by the incineration equipment for the second time at high temperature to form residues without generating fly ash or discharging, thereby solving the problem of treating the incineration fly ash in all incineration plants.
Description
Technical Field
An immediate circulation treatment technology and a method for incineration fly ash, which relate to the field of environmental protection and new industrial technology, in particular to a treatment technology and a method for incineration fly ash (hazardous waste) generated by incineration of household garbage and industrial waste by an industrial kiln.
Background
At present, the quantity of domestic garbage, industrial waste and the like generated in China each year exceeds hundreds of millions of tons, and a large amount of industrial dangerous waste and domestic waste must be treated and disposed. There are many methods for disposing general and hazardous wastes in the world, such as physical treatment, chemical treatment, biological treatment, thermal treatment and solidification treatment, and most of them are disposed by landfilling, incineration or cooperative disposal. However, after the waste is burnt by the industrial kiln, a large amount of residues, burning fly ash and smoke gas are generated and need to be further treated, wherein the large amount of residues are directly buried as common solid waste or are applied and reprocessed; the smoke is discharged through a smoke treatment system after reaching the standard; meanwhile, millions of tons of toxic and harmful incineration fly ash accounting for 1-5% of the total incineration amount are collected by the dust collection system and the flue gas treatment system, and the incineration fly ash is listed in a national hazardous waste catalogue and must be treated and managed as hazardous waste, so that the treatment difficulty, the government management difficulty and the enterprise burden are increased. At present, no better treatment method exists.
The incineration fly ash generated by remotely incinerating waste by an industrial road is collected by an industrial kiln (such as a garbage furnace, a rotary kiln, a fluidized bed and the like) through a dust removal facility for incinerating waste, a dust collection system and a flue gas treatment system, has fine particles, larger specific surface area and extremely strong adsorption activity, partial toxic and harmful substances, dioxin and the like are adsorbed, and the fly ash mainly contains SiO2、CaO、Al2O3、Fe2O2、SO2、Na2O、K2In addition to general compounds such as O, the fly ash incineration waste ash also contains harmful heavy metal elements such as Hg, Cd and Pb and other toxic and harmful substances such as trace organic pollutants (such as dioxin), so that the risk of serious secondary pollution exists, the environment can be continuously polluted, the human health is influenced, the sustainable development is restricted, the fly ash incineration waste ash is listed as a dangerous waste catalogue by the country, and the fly ash incineration waste ash is stored, transported, treated and managed according to dangerous waste, so that the fly ash incineration waste elements and the heavy metal elements and the fly ash incineration waste ash incineration waste elements and the incineration waste ash incineration waste elements and the incineration waste ash incineration waste ash incineration waste elements and the incineration waste ash incineration waste ash incineration waste elements are also can be.
At present, the incineration fly ash is treated as the hazardous waste for the second time in China, the landfill treatment is implemented mainly by solidifying toxic and harmful substances, a large amount of land is occupied, the treatment cost and the consumption cost are extremely high, some of the incineration fly ash can generate the third pollution or enterprises can deal with the incineration fly ash by enterprises with the license of hazardous waste disposal, and at present, no better, simple and easy incineration fly ash treatment method is available.
The invention provides a practical and feasible incineration fly ash treatment technology and method which is low in energy consumption, low in cost, low in investment and simple and convenient in process, and has the advantages that the incineration fly ash dangerous waste is not generated in an incineration waste disposal system, and the generation and discharge of incineration fly ash are avoided.
Disclosure of Invention
The purpose of the invention is as follows: the treatment technology and the method solve the problem that incineration fly ash generated by an industrial kiln incineration waste treatment system does not generate incineration fly ash dangerous waste any more, and an incineration enterprise does not need to perform other independent treatment on the incineration fly ash dangerous waste any more.
The technical principle and the method are as follows:
the technical improvement is carried out on the basis of the existing or similar industrial kiln incineration waste treatment system, or the industrial kiln incineration waste treatment system is newly designed and built, various industrial kiln (such as garbage incinerator, boiler, rotary kiln, tunnel kiln, fluidized bed and the like) devices, feeding, incineration, slag discharging, dust removing and smoke gas treatment device systems of the incineration waste treatment system of solid waste such as domestic garbage and dangerous waste such as oil sludge are utilized, after the incineration fly ash collection system,increase ofThe burning fly ash metering system, the instant closed conveying system and the batching system enter a material supply system of burning waste to realize that fly ash is instantly mixed with original burning waste and enters a high-temperature burning furnace for secondary high-temperature burning to ensure that toxic and harmful substances such as dioxin in the fly ash are secondarily burned to form burning residues, and a large amount of residues are secondarily treated; the generated carbon dioxide, water and flue gas enter a dust and flue gas treatment system generated by waste again, and the waste gas isDirectly discharging the waste gas into the air after reaching the standard; the incineration fly ash is continuously and circularly treated in a closed way, the incineration fly ash is not generated any more, other treatments on the incineration fly ash are not needed, and no tertiary waste is generated any more, so that the problem of treatment of the incineration fly ash of dangerous waste in all industrial kiln incineration waste enterprises is solved, and the problems of treatment and other consumption of the existing incineration fly ash as dangerous waste are thoroughly solved. The method reduces a large amount of land used for landfill treatment of solidified hazardous wastes, reduces a large amount of cost, and solves the problems of large amount of incineration fly ash, difficult disposal, high treatment cost and difficult government supervision and management.
The technical scheme is as follows:
the invention 1 is based on the existing waste incineration disposal system, does not increase factory buildings, does not change the conditions of the kiln, feeding, incineration, slag discharge, dust removal and flue gas treatment equipment of the existing waste incineration disposal system, a fly ash collecting system, a metering system and an instant closed conveying system are added behind a fly ash collecting port of the system, a fly ash incineration and incineration waste mixed batching system enters a high-temperature incinerator for secondary high-temperature incineration, so that dioxin and the like which are toxic substances in the fly ash are secondarily incinerated to form incineration residues, the generated smoke such as carbon dioxide, water and the like is discharged after reaching standards, the fly ash generated by the secondary fly ash and the original waste enters a dust and smoke treatment system and an instant closed circulating system again, secondary circulating treatment is carried out in a circulating mode, no incineration fly ash is generated or discharged, no other treatment is carried out on the incineration fly ash, and no tertiary waste is generated.
2 for the new design of industrial kiln waste incineration system, using the technology and method of the invention, design the kiln of the waste incineration treatment system, feeding, incineration, slag discharge, dust removal and flue gas treatment equipment, fly ash collection system, metering system, instant closed cycle conveying system, fly ash and incineration waste mixing and batching system, make the process layout more reasonable, reduce the construction of the storehouse of incineration fly ash, etc., the incineration fly ash, after mixing with the original waste, enters into the high temperature incinerator, the toxic substance dioxin, etc. in the fly ash is burned for the second time, the generated flue gas of carbon dioxide and water, etc. is discharged through reaching the standard, the inorganic substance, etc. in the incineration fly ash reacts with the residue of the original incineration waste or forms the incineration residue, the micro secondary fly ash and the fly ash generated by the original waste enter into the dust and flue gas treatment system and the instant closed cycle system again for the second cycle treatment, no incineration fly ash is generated or discharged, no other treatment is carried out on the incineration fly ash, and no tertiary waste is generated. The storage storehouse for the incineration fly ash and related transfer and treatment facilities are not built any more, a large amount of capital and land are saved, and corresponding management procedures are reduced.
Compared with the prior art, the invention has the advantages that no secondary hazardous waste incineration fly ash is generated, no secondary treatment is needed, and no tertiary waste is generated.
FIG. 1: the prior incinerator incineration fly ash untreated disposal technology and method are a schematic diagram.
FIG. 2 is a drawing: the invention is a schematic diagram of the incinerator incineration fly ash recycling treatment technology and method.
Compared with the prior art, the invention has the following beneficial effects:
most incineration plants currently dispose the incineration fly ash by units with hazardous waste disposal licenses, and at present, the incineration fly ash has many methods of physical treatment, chemical treatment, biological treatment, heat treatment and solidification treatment, and generates three wastes.
By utilizing the incinerator equipment system and the characteristics of the fly ash generated by the incinerator equipment system, the fly ash is circularly treated at high temperature, is continuously, uniformly and immediately mixed with the original incineration waste and enters the high-temperature incineration for the second time to become residue for treatment, and the incineration system does not generate and discharge incineration fly ash.
The invention has the advantages of homologous and adaptive raw materials, avoids the generation of the fly ash of the dangerous waste generated by the solid waste, is suitable for circularly disposing the fly ash of all waste incinerators, has wide range, simplicity, convenience and reliability, small increased investment, easy implementation and higher feasibility and economy; the links of storage, management, transportation and treatment are reduced.
The specific implementation mode is as follows:
the invention relates to a circulating treatment technology and a method for incineration fly ash of an incinerator, which do not generate the incineration fly ash according to the principle that:
such as: the fly ash recycling treatment technical scheme of the incineration waste of industrial kilns such as rotary kilns and the like comprises the following steps: instantly mixing oil sludge or other wastes with incineration fly ash, burning the mixture in a rotary kiln at high temperature, burning a large amount of organic matters in the wastes and wastes such as toxic and harmful substances in the incineration fly ash to generate residues, incineration fly ash and smoke, wherein the generated smoke such as carbon dioxide, water and the like passes through a dust collection and smoke treatment system, the smoke is discharged up to the standard, and the collected incineration fly ash containing the toxic and harmful substances such as dioxin and the like is instantly circularly treated after being mixed with the original wastes; the trace toxic and harmful substances in the incineration fly ash are decomposed by secondary incineration; a large amount of inorganic matters which are not decomposed by combustion are subjected to chemical reaction at high temperature to form silicate minerals or are sintered to generate residues, and the residues are further treated as other wastes. By using the technology and the method, the incineration fly ash is not discharged from an incineration waste system of the industrial kiln, and the incineration fly ash is not required to be disposed, so that the worries of the disposal of the incineration fly ash are thoroughly solved.
The invention has the main technical characteristics and effects that:
on the basis of an industrial kiln incineration waste treatment system or a newly designed industrial kiln incineration waste treatment system, various industrial kiln (such as a garbage incinerator, a boiler, a rotary kiln, a tunnel kiln, a fluidized bed and the like) equipment, feeding, incineration, slag discharging and dust removing technical flue gas treatment equipment systems of the waste incineration waste treatment system or a newly built waste incineration system are utilized, a fly ash metering system, an instant closed conveying system and a batching system are added behind an incineration fly ash collecting system to realize the instant mixing of the fly ash and the original waste, the secondary high-temperature incineration is carried out in a high-temperature incinerator, the continuous closed circulation treatment is carried out, the dioxin and the like which are toxic substances in the fly ash are subjected to secondary incineration to form incineration residues, the generated carbon dioxide, water and secondary fly ash enter a dust and flue gas treatment system generated with the waste again to carry out secondary treatment, the incineration fly ash enters the circulation treatment system again to be treated, no incineration fly ash is generated or discharged, no other treatment on the incineration fly ash exists, and no tertiary waste is generated.
The fly ash generated by the incinerator currently has a plurality of methods of physical treatment, chemical treatment, biological treatment, heat treatment and solidification treatment, other treatment methods also generate three times of waste, most of the fly ash is in a solidification and landfill mode, but a large amount of land is occupied, the treatment and consumption cost is extremely high,
the technology and the method of the invention utilize the prior incineration waste equipment and process technology, add an immediate circulating treatment system of the incineration fly ash, have simple and convenient operation, less investment and quick effect, can save more than billions of incineration fly ash treatment cost every year in China, reduce a large amount of land used for curing and landfill treatment, reduce a large amount of treatment cost and other consumption, solve the difficult problem of treating the incineration fly ash of dangerous waste in all industrial kiln incineration plants, solve the problems of large amount of incineration fly ash, difficult treatment, high treatment cost and difficult government supervision and management, and have huge environmental protection and energy saving benefits, good economic benefits and great social significance.
Description of the drawings:
FIG. 1 is a schematic diagram of the process of incinerating fly ash generated by incinerating waste in an industrial furnace without immediate treatment.
FIG. 2 is a process diagram of the fly ash from incineration of waste in industrial kilns, the instant cycle treatment technique and method of the present invention.
Note: the yellow (light) arrow area in the attached figure is the incineration fly ash circulation technology and the method treatment system utilized by the invention, and the incineration fly ash is not exported and subjected to post-treatment.
The specific implementation mode is as follows:
on the basis of the existing industrial kiln incineration waste treatment system or a newly designed industrial kiln incineration waste treatment system, various industrial kiln (such as a garbage incinerator, a boiler, a rotary kiln, a tunnel kiln, a fluidized bed and the like) equipment, a feeding equipment, an incineration, slag discharging equipment, a dust removing equipment and a smoke treatment equipment system of a newly built incineration system are utilized, a fly ash metering system, an instant closed conveying system and a batching system are added in an incineration fly ash collecting system and a smoke treatment system, so that the mixing of fly ash and original waste is realized, the secondary high-temperature incineration is carried out in a high-temperature incinerator, the continuous closed circulation treatment is carried out, the dioxin and the like which are toxic substances in the fly ash are subjected to the secondary incineration to form incineration residues, and the generated carbon dioxide, water and secondary fly ash enter the dust and smoke treatment system generated with waste again, the method has the advantages of reducing a large amount of land used for landfill solidification treatment, reducing a large amount of cost and other consumption, and solving the problems of large amount of incineration fly ash, difficult disposal, high treatment cost and difficult government supervision and management.
At present, incineration fly ash generated by incinerating waste by industrial kilns is mainly disposed by solidified landfills or disposed by enterprises with hazardous waste disposal licenses, and no similar disposal technology or method exists.
The invention comprises various industrial kiln (garbage incinerator, rotary kiln, fluidized bed, cupola, tunnel kiln and roller kiln) incineration equipment, and incineration fly ash recycling treatment technology and method for incineration of general wastes such as domestic garbage and dangerous wastes such as oil sludge.
Claims (4)
1. In the incineration treatment system for incinerating general waste such as domestic garbage or dangerous waste such as oil sludge in various industrial furnaces (such as garbage furnaces, rotary kilns, fluidized beds and the like), an incineration fly ash metering device system, an instant closed conveying device system and a batching system are added behind an incineration fly ash collecting system for treating dust or smoke, fly ash and original incineration waste are mixed and enter an incinerator, and the incineration fly ash is instantly, continuously and uniformly incinerated at high temperature for the second time to form incineration residue, so that the instant closed circulation treatment of the incineration fly ash is realized, and the generation or discharge of the incineration fly ash is avoided.
2. The technology and the method of the invention comprise the intermittent circulation treatment technology and the intermittent circulation treatment method of the incineration fly ash utilization industrial incineration equipment system.
3. The invention does not relate to the specific specification and model of the incineration equipment, but includes the right to use the incineration fly ash recycling treatment technology and method principle to modify the incineration system in use.
4. The invention relates to an immediate or discontinuous circulation treatment technology and a method for incineration fly ash, which relates to the design of an incineration fly ash treatment system of a newly-built incinerator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623546.8A CN113883529A (en) | 2020-07-01 | 2020-07-01 | Immediate circulation treatment technology and method for incineration fly ash of industrial kiln incineration waste |
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| CN202010623546.8A CN113883529A (en) | 2020-07-01 | 2020-07-01 | Immediate circulation treatment technology and method for incineration fly ash of industrial kiln incineration waste |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0891887A (en) * | 1994-09-21 | 1996-04-09 | Kawasaki Heavy Ind Ltd | Method and device for solidifying combustion ashes of pulverized coal |
| CN101569890A (en) * | 2009-05-25 | 2009-11-04 | 北京新北水水泥有限责任公司 | New disposal method of fly ash |
| CN101725990A (en) * | 2009-12-24 | 2010-06-09 | 童加增 | Fly ash recovery device |
| CN202141056U (en) * | 2011-06-02 | 2012-02-08 | 浙江大学 | Integration system of hazardous waste burning and burning fly ash melting and solidification |
| CN203833242U (en) * | 2014-05-21 | 2014-09-17 | 陕西新天地固体废物综合处置有限公司 | Incineration fly ash pneumatic conveying system |
| KR101589990B1 (en) * | 2014-12-30 | 2016-01-29 | 한국중부발전(주) | Fly ash re-burning system for Dry bottom ash coal-fired Boiler |
| CN106642152A (en) * | 2016-12-26 | 2017-05-10 | 重庆文渠环保科技有限公司 | Method for harmless disposal and comprehensive utilization by mixed incineration of sludge and garbage fly ash |
| CN108036323A (en) * | 2017-12-29 | 2018-05-15 | 长沙中硅水泥技术开发有限公司 | The system and method that cement kiln cooperates with multifuel combustion garbage flying ash and sludge eco-cement |
| CN207394872U (en) * | 2017-09-26 | 2018-05-22 | 航天环境工程有限公司 | A kind of plasma Incinerating and melting system for handling ashes and clinker |
| CN210398933U (en) * | 2019-04-23 | 2020-04-24 | 光大环保（中国）有限公司 | Waste incineration device combining oxygen-enriched combustion with fly ash recycling |
-
2020
- 2020-07-01 CN CN202010623546.8A patent/CN113883529A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0891887A (en) * | 1994-09-21 | 1996-04-09 | Kawasaki Heavy Ind Ltd | Method and device for solidifying combustion ashes of pulverized coal |
| CN101569890A (en) * | 2009-05-25 | 2009-11-04 | 北京新北水水泥有限责任公司 | New disposal method of fly ash |
| CN101725990A (en) * | 2009-12-24 | 2010-06-09 | 童加增 | Fly ash recovery device |
| CN202141056U (en) * | 2011-06-02 | 2012-02-08 | 浙江大学 | Integration system of hazardous waste burning and burning fly ash melting and solidification |
| CN203833242U (en) * | 2014-05-21 | 2014-09-17 | 陕西新天地固体废物综合处置有限公司 | Incineration fly ash pneumatic conveying system |
| KR101589990B1 (en) * | 2014-12-30 | 2016-01-29 | 한국중부발전(주) | Fly ash re-burning system for Dry bottom ash coal-fired Boiler |
| CN106642152A (en) * | 2016-12-26 | 2017-05-10 | 重庆文渠环保科技有限公司 | Method for harmless disposal and comprehensive utilization by mixed incineration of sludge and garbage fly ash |
| CN207394872U (en) * | 2017-09-26 | 2018-05-22 | 航天环境工程有限公司 | A kind of plasma Incinerating and melting system for handling ashes and clinker |
| CN108036323A (en) * | 2017-12-29 | 2018-05-15 | 长沙中硅水泥技术开发有限公司 | The system and method that cement kiln cooperates with multifuel combustion garbage flying ash and sludge eco-cement |
| CN210398933U (en) * | 2019-04-23 | 2020-04-24 | 光大环保（中国）有限公司 | Waste incineration device combining oxygen-enriched combustion with fly ash recycling |
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