CN202692077U - Anti-slagging disposal device used in incineration of hazardous wastes - Google Patents
Anti-slagging disposal device used in incineration of hazardous wastes Download PDFInfo
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- CN202692077U CN202692077U CN 201220265817 CN201220265817U CN202692077U CN 202692077 U CN202692077 U CN 202692077U CN 201220265817 CN201220265817 CN 201220265817 CN 201220265817 U CN201220265817 U CN 201220265817U CN 202692077 U CN202692077 U CN 202692077U
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- kiln
- slagging
- incineration
- waste
- rotary kiln
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Abstract
The utility model belongs to the technical field of environment protection and discloses an anti-slagging disposal device used in incineration of hazardous wastes, which comprises a rotary incineration kiln and a variable frequency motor. The variable frequency motor can rotate both clockwise and counterclockwise and is connected with the rotary incineration kiln to drive the rotary incineration kiln to rotate clockwise or counterclockwise or to swing. The rotary incineration kiln comprises a kiln head, a kiln middle part and a kiln tail; anti-slagging refractory material is paved on the inner wall of the rotary incineration kiln; a slag outlet is arranged at the bottom of the rotary incineration kiln; and a chimney is arranged at the top of the rotary incineration kiln. The anti-slagging disposal device is used for preventing slagging in incineration of hazardous wastes.
Description
Technical field
The utility model relates to environmental technology field, relates in particular to a kind of dangerous waste incineration Anti-slagging disposal plant.
Background technology
Hazardous waste refers to list in national Hazardous Waste List or according to the hazardous waste standard of perfection of national regulation and the refuse with Hazardous Characteristics of Hazardous Wastes of authentication method identification.
Hazardous waste has toxicity, inflammability, explosivity, corrosivity, chemical reactivity or infectiousness, can consist of serious harm to ecological environment and human health.The pollution of hazardous waste is responsive directly perceived unlike waste water, waste gas, so people are not enough to the harm understanding of hazardous waste, and its improvement level is also lagged far behind improvement to waste water, waste gas.The control hazardous waste has become a great environmental problem of world facing to the harm of environment and human health.Countries in the world government is more and more stricter to illegal transfer and the safe disposal of hazardous waste and other solid waste.United Nations Environment Programme has passed through Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal in March, 1989, and comes into force in 1992, and China is the earliest one of contracting party of Basel Convention.
Hazardous waste has a strong impact on because it can cause environment even human body, thereby must safe deal carefully with disposal.Stipulate according to country and local environmental law Laws ﹠ Regulations: producing hazardous waste unit must focus on hazardous waste, arrange the special messenger to be responsible for collecting and management work, the as ready hazardous waste will arrange dedicated container and store, and hazardous waste must hand over the unit with corresponding qualification to collect, transport, process and process.
The physical-chemical process treatment process that is usually used in waste residue comprises: heat treatment (burning, pyrolysis), curing/stabilizing.
The physical-chemical process treatment process that is usually used in waste liquid comprises: coagulation, chemical precipitation, acid-base neutralization, redox, adsorption and desorption, ion-exchange, burning etc., replace, the then less employing of technique such as electrolysis, extraction, electrodialysis, counter-infiltration, light decomposition.
Bioanalysis is applicable debirs only, wherein are used for comprising of organic solid waste: composting process and Unareobic fermentation, what be used for organic liquid waste comprises activated sludge process, anaerobic digestion.
Burning is a kind of main method of disposing waste residue.Waste residue contains the compositions such as low-melting glass, and when burning, dual firing chamber's outlet lower accepting water envelope mucking machine easily makes the material slagging scorification such as liquid alkaline matter such as silicate.Slag notch is stopped up in the slagging scorification meeting, causes operating mode unstable, and particularly the slagging scorification meeting reduces efficiency of combustion, causes hot burn decrement rate to exceed standard.
For slagging genesis and the solution of hazardous waste, domestic each designing institute, engineering general contracting unit, operation commercial city actively, initiatively carry out research, mainly contain at present following several disposal technology:
A kind of is from original-source by classification: in medical wastes incineration factory, the sorting by medical institution personnel such as the material of easy slagging scorification such as glass is removed glass content in the clinical waste.Now, the Some Domestic small and medium-sized cities are taked in hospital the mode of categorised collection to reduce glass and are entered incinerator.But in view of present present situation, thoroughly categorised collection there is no the method realization, is difficult to effectively be promoted in each large-and-medium size cities, the slagging scorification phenomenon therefore inevitably occurs.
The 2nd, optimization of combustion technique: many incineration plant substitute traditional high-temperature incinerator with incinerator for thermal decomposition or high temperature smelting furnace and solve the slagging scorification problem.Pyrolysis gasification furnace can improve the slagging scorification problem to a certain extent, but because the incinerator for thermal decomposition temperature is low, the problem that may exist is that the lime-ash residual quantity is high, and lime-ash burns not thorough, large and the hot burn decrement rate of slag of slag output may exceed standard, and therefore is not best molten slag incinerator type.High temperature smelting furnace be with lime-ash being higher than melt-combustion under 1300 ℃ the high temperature, can thoroughly solve the slagging scorification problem.But the technical sophistication that high temperature smelting furnace relates in one aspect to, present dependence on import, the technology transfer expense is high; On the other hand because the running temperature of melting furnace is higher, under guaranteeing that gas residence time was greater than 2 seconds equal precondition, the furnace volume of melting furnace will be greater than high temperature rotary kiln incinerator commonly used, thereby increase investment cost to equipment (comprise to the investment of steel shell, refractory material etc.), also higher to the heatproof of refractory material, the performance requirement such as corrosion-resistant, thus the investment cost of refractory material increased.In order to safeguard the equilibrium temperature of burner hearth, the consumption of auxiliary fuel must be higher than other two kinds of techniques, and under the present situation that is becoming tight energy day, the application that this technology is disposed at clinical waste glass Anti-slagging also has certain limitation.
The slagging scorification phenomenon becomes a large technical barrier at the present solid waste disposal center of having built up of puzzlement, in order in time to eliminate slagging scorification, stop the operation of CIU, goes into operation after the elimination again.Like this, the continuous days running of system and a year days running have all reduced.
Therefore, industry is badly in need of dangerous waste incineration Anti-slagging disposal plant.
The utility model content
For remedying the deficiencies in the prior art, the utility model purpose provides dangerous waste incineration Anti-slagging disposal plant.
To achieve these goals, the technical solution of the utility model is as follows:
Dangerous waste incineration Anti-slagging disposal plant is characterized in that, comprises:
Burn rotary kiln (101), have (1012) He Yaowei (1013) in (1011) before the kiln, the kiln;
Variable-frequency motor (102), but for both forward also reversible variable-frequency motor, connect this burning rotary kiln (101);
The inwall (1016) of this kiln tail (1013) arranges the anti-caking slag blanket, and the bottom sets out cinder notch (1015), and the top arranges chimney (1017).
Dangerous waste incineration Anti-slagging disposal plant as above, wherein, this anti-caking slag blanket is extraordinary corundum layer.
Dangerous waste incineration Anti-slagging disposal plant as above, wherein, this anti-caking slag blanket is the pink fused alumina layer.
Dangerous waste incineration Anti-slagging disposal plant as above wherein, also comprises and burns heater (1014).
Dangerous waste incineration Anti-slagging disposal plant as above, wherein, the swing angle of this burning rotary kiln (101) is 20 to 60 degree.
The beneficial effects of the utility model are:
(1) prevents slagging scorification.
(2) operating mode is stable, and efficient is high.
Description of drawings
Below in conjunction with accompanying drawing, by the detailed description to the specific embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effects apparent.
Fig. 1 is the utility model apparatus structure schematic diagram.
Fig. 2 is that the utility model burns rotary kiln swing angle schematic diagram.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below further elaboration the utility model.
Fig. 1 has represented structural representation of the present utility model.The utility model device comprises burning rotary kiln 101, variable-frequency motor 102.Variable-frequency motor 102 connects burning rotary kiln 101, drives to burn rotary kiln 101 rotations.
Burn heater 1014 and improve temperature to required temperature for burning rotary kiln 101, make incineration of waste.
Burn rotary kiln 101 and have that kiln is front 1011, in the kiln 1012 and 1,013 three sections on kiln tail, the bottom of kiln tail 1013 sets out cinder notch 1015.1012 temperature is higher in kiln front 1011 and the kiln, and kiln tail 1013 connects follow-up exhaust gas processing device and slag notch 1015 etc., so temperature decreases.When temperature reduces, be easy to form slagging scorification 1018, stick to the inwall of kiln tail 1013.
The inwall 1016 of kiln tail 1013 is laid the Anti-slagging refractory material.Kiln tail 1013 tops arrange chimney 1017, discharge burning the tail gas that produces, and do subsequent treatment.
Therefore near the easily slagging scorification slag notch 1015 of kiln tail 1013 lays the Anti-slagging refractory material at inwall 1016, and the utility model uses extraordinary corundum brick.
In a preferred embodiment of the present utility model, the Anti-slagging refractory material is the pink fused alumina material, and it is corrosion-resistant, high temperature resistant, compressive resistance is high, good thermal shock stability, high-wearing feature, high resistance to slag, anti-strip are good, long service life.The Main Ingredients and Appearance of pink fused alumina material is Al2O3 and alloying component, and chemical resistance of concrete is very good, wear-resisting, high temperature resistantly reaches 1400 ℃, reaches 8000～12000 hours service life.
But variable-frequency motor 102 is both forward also reversible variable-frequency motor.Drive and burn rotary kiln 101 forwards, counter-rotating, wave.Hazardous waste stirs via burning rotary kiln 101 rotations, burns comparatively even, and burns the holdup time prolongation, burns more abundant, and the incinerator efficiency of combustion is higher than 99.9%.Burn rotary kiln 101 axial kiln tail sections and form larger temperature difference, the high-temperature region is strengthened slag fluidity, especially very easily sticks to the glass on the Anti-slagging special-purpose fire-resistant material, becomes slag in the high-temperature region, waving in the process of forward and backward, slag is discharged slag notch 1015.
According to the temperature characterisitic of soda-lime-silica glass slagging scorification, 1000 ℃ just begin to melt with the upper glass slag.The utility model burns the high heating value clinical waste by burning heater 1014, improve the temperature of kiln tail 1013 to more than the fusing point, the utility model improves kiln end temperature to 1000-1300 ℃, be preferably 1200 ℃, the slagging scorification of coking of high temperature melt in burning the waving of rotary kiln 101, is melted to fluidised form with kiln tail 1013 bulk slag everywhere, continuously flow into bottom slag notch 1015, reach the purpose of removing slag.
The swing angle of variable-frequency motor 102 control forward and backwards of the present utility model, so that hazardous waste can be reached completing combustion by even bulk cargo under the effect of waving, can regularly the slag at kiln tail 1013 places be removed again, reduce the hot burn decrement rate of incineration residue, guarantee stable combustion conditions in the stove.
The preferred range of the utility model swing angle is the 20-60 degree, as shown in Figure 2.
The operation principle of the utility model when burning hazardous waste is: at first, hazardous waste enters the burning rotary kiln, high temperature incineration in burning rotary kiln, simultaneously, lower the waving who burns rotary kiln, fully burning, slag at the kiln tail of burning rotary kiln by high temperature melting.Slag is discharged by the slag notch that burns the rotary kiln bottom, and tail gas is discharged from chimney, does subsequent treatment.
Burn the certain angle that reverses after the rotary kiln forward certain angle, forward and reverse hocket.Angle is the 20-60 degree.In a most preferred embodiment of the present utility model, angle is 45 degree.
Hazardous waste stirs via burning rotary kiln 101 rotations, burns comparatively even, and burns the holdup time prolongation, burns more abundant.
In most preferred embodiment of the present utility model, kiln end temperature is promoted to 1200 degree.
Use the dangerous waste incineration method and apparatus that prevents slagging scorification of the present utility model, both solved the problem of slag obstruction slag notch, guaranteed again continuous, the reliable operating condition of CIU.By dangerous waste incineration Anti-slagging technology, hazardous waste (containing clinical waste) incineration plant can be guaranteed the continuous operation fate more than 180 days after formally putting into operation, and year total fate of running was above 300 days.By waving and the high-temperature slag technology, guarantee that the incinerator efficiency of combustion is higher than 99.9%; Incinerator destroys clearance by fire and is higher than 99.99%; The hot burn decrement rate of residue is lower than 5%.Refractory material service life was greater than 8000～12000 hours.Fume emission all reaches European Union's 2000 discharge standards.
Above explanation and diagram are only in order to clearly demonstrate and should be readily appreciated that the utility model, and those skilled in the art should increase or reduce certain step, perhaps certain step are made simple transformation; All simple conversion, increase and decrease and application is held and change all belong to protection domain of the present utility model.
Claims (4)
1. dangerous waste incineration Anti-slagging disposal plant is characterized in that, comprises:
Burn rotary kiln (101), have (1012) He Yaowei (1013) in (1011) before the kiln, the kiln;
Variable-frequency motor (102), but for both forward also reversible variable-frequency motor, connect this burning rotary kiln (101);
The inwall (1016) of this kiln tail (1013) arranges the anti-caking slag blanket, and the bottom sets out cinder notch (1015), and the top arranges chimney (1017).
2. according to claim 1 dangerous waste incineration Anti-slagging disposal plant is characterized in that, this anti-caking slag blanket is the pink fused alumina layer.
3. according to claim 1 and 2 dangerous waste incineration Anti-slagging disposal plant is characterized in that, also comprises to burn heater (1014).
4. according to claim 1 dangerous waste incineration Anti-slagging disposal plant is characterized in that, the swing angle of this burning rotary kiln (101) is 20 to 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265817 CN202692077U (en) | 2012-06-07 | 2012-06-07 | Anti-slagging disposal device used in incineration of hazardous wastes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265817 CN202692077U (en) | 2012-06-07 | 2012-06-07 | Anti-slagging disposal device used in incineration of hazardous wastes |
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| Publication Number | Publication Date |
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| CN202692077U true CN202692077U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220265817 Expired - Lifetime CN202692077U (en) | 2012-06-07 | 2012-06-07 | Anti-slagging disposal device used in incineration of hazardous wastes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101498A (en) * | 2017-04-20 | 2017-08-29 | 韶关绿然再生资源发展有限公司 | The method for reducing dangerous waste incinerator rotary kiln coking |
-
2012
- 2012-06-07 CN CN 201220265817 patent/CN202692077U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101498A (en) * | 2017-04-20 | 2017-08-29 | 韶关绿然再生资源发展有限公司 | The method for reducing dangerous waste incinerator rotary kiln coking |
| CN107101498B (en) * | 2017-04-20 | 2019-06-28 | 韶关东江环保再生资源发展有限公司 | The method for reducing the coking of dangerous waste incinerator rotary kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201815 2491 Jiading District Road, Shanghai Patentee after: Shanghai solid waste disposal Co., Ltd. Address before: 201815 2491 Jiading District Road, Shanghai Patentee before: Shanghai Solid Waste Management Center |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |