CN204648253U - A kind of dangerous waste incineration device - Google Patents
A kind of dangerous waste incineration device Download PDFInfo
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- CN204648253U CN204648253U CN201520249112.0U CN201520249112U CN204648253U CN 204648253 U CN204648253 U CN 204648253U CN 201520249112 U CN201520249112 U CN 201520249112U CN 204648253 U CN204648253 U CN 204648253U
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Abstract
The utility model provides a kind of dangerous waste incineration device, the dual firing chamber of the vertical setting that the rotary kiln comprising horizontally set is communicated with the end of described rotary kiln with bottom, and the draw ratio of described rotary kiln is 2.5-4.5:1; Sidewall in the middle part of described dual firing chamber is provided with some secondary air inlets; Described incinerator comprises the residue melting zone be positioned at below described dual firing chamber further, and described residue melting zone is connected with the bottom of described dual firing chamber.The effect that the utility model is useful is: 1, have applicability widely to hazardous waste, can dispose the hazardous waste of various form, comprises solid-state, liquid, semisolid etc.2, by regulating intake, realizing hazardous waste pyrolysis in rotary kiln/burn completely, controlling kiln temperature, avoiding coking.3, dioxin is broken to CO completely by uniform and stable high temperature in dual firing chamber
2, HCl, H
2o, avoids dioxin to regenerate within the scope of 250 DEG C-450 DEG C, guarantees that dioxin is up to standard.
Description
Technical field
The utility model relates to field of waste incineration, relates to a kind of novel hazardous Waste Incineration device particularly, can be used for the hazardous waste of incineration disposal all kinds, form.
Background technology
Along with the fast development of China's economy, the generation of hazardous waste sharply increases.According to national environmental protection portion statistics, within 2012, China's hazardous waste generation has reached 3,465 ten thousand tons.The environmental risk potential in view of it and the threat to health, hazardous waste has become one of great environmental problem that China facing.
Burning effectively can destroy the poisonous and harmful debirs in refuse, reduces the volume of refuse and quality, is conducive to the final safe disposal of refuse, be realize hazardous waste minimizing, innoxious the most fast, the most effective technology.Incinerator is divided into the multiple type of furnaces such as rotary kiln, Liquid inject incinerator, pyrogenation incinerator, fluidized bed incinerator, plasma gasification furnace.
Rotary kiln is one and slightly tilts and the steel hollow cylinder of interior deposited refractory brick, is used for the material such as cement baking, lime the earliest, uses gradually afterwards in the disposal of hazardous waste.After hazardous waste enters rotary kiln, along with the rotation of rotary kiln shifts to the other end from one end, in the process of movement, refuse is burned gradually, and residue is discharged from bottom, and flue gas enters dual firing chamber.Dual firing chamber need add fuel makes temperature be raised to more than 1100 DEG C, to destroy the harmful components such as dioxin in flue gas.Rotary kiln can process the hazardous waste of various different shape (solid, liquid, mud etc.) effectively, to the strong adaptability of hazardous waste, technology maturation, reliable, and operation is relatively simple, can meet very well various danger burn charging, to slag tap etc. in requirement, generally adopted by industrial quarters.But traditional rotary kiln dangerous waste disposal device often exists, and kiln caudal knot is burnt, residual burning not exclusively, dioxin is difficult to up to standard, disposal of ash and slag high in cost of production problem, therefore improves or develop the new danger disposal plant that gives up imperative.
Utility model content
In utility model content part, introduce the concept of a series of reduced form, this will further describe in detailed description of the invention part.Content part of the present utility model does not also mean that the key feature and essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain attempting to determine technical scheme required for protection.
The utility model provides a kind of dangerous waste incineration device, the dual firing chamber of the vertical setting that the rotary kiln comprising horizontally set is communicated with the end of described rotary kiln with bottom, and the draw ratio of described rotary kiln is 2.5-4.5:1;
Sidewall in the middle part of described dual firing chamber is provided with some secondary air inlets;
Described incinerator comprises the residue melting zone be positioned at below described dual firing chamber further, and described residue melting zone is connected with the bottom of described dual firing chamber.
Alternatively, in described dual firing chamber, temperature is more than or equal to 1100 DEG C, and gas residence time is greater than 2s.
Alternatively, described residue melting zone is plasma melting tabetisol.
Alternatively, described residue melting zone comprises the melting body of heater be communicated with described dual firing chamber and the water-cooling jacket arranged around described melting body of heater.
Alternatively, the sidewall of described residue melting zone is provided with some plasmatorch.
Alternatively, the end of described residue melting zone is communicated with slag notch.
Alternatively, anxious smoke evacuation chimney is also provided with at the top of described dual firing chamber.
Alternatively, the sidewall on described dual firing chamber top is also provided with dual firing chamber's exhanst gas outlet.
Alternatively, the sidewall of described dual firing chamber is also provided with afterburning burner, described afterburning burner is positioned at the below of described secondary air inlet and the top of described rotary kiln.
Alternatively, the sidewall of described dual firing chamber is provided with liquid waste spray gun, described liquid waste spray gun is positioned at the below of described secondary air inlet.
Alternatively, described rotary kiln is also provided with at least two wheel belt around supporting described rotary kiln.
Alternatively, be also provided with between described wheel belt around the gear wheel of described rotary kiln and the motor that is connected with described gear wheel.
Alternatively, the front end of described rotary kiln is connected with feed hopper, and in the lower end of described feed hopper, the front of described rotary kiln is provided with charging ram.
Alternatively, the top of the front end of described rotary kiln is provided with burner.
The utility model is in order to solve the lime-ash incomplete combustion existed in prior art, the problem that kiln caudal knot is burnt, dioxin is not up to standard, disposal of ash and slag cost is high, provide a kind of dangerous waste incineration device, the utility model is by optimizing rotary kiln draw ratio, traditional draw ratio is optimized for 2.5-4.5:1 from traditional 4-6:1, control refuse in rotary kiln, realize pyrolysis/burn completely, the gas produced after burning enters dual firing chamber, and residue enters dual firing chamber's bottom dross pond.
In addition, the gas that in the utility model dangerous waste incineration device, pyrolysis produces enters dual firing chamber, and is full of dual firing chamber, passes into Secondary Air and makes it burn completely; If the hazardous waste calorific value that rotary kiln enters is more than 4000 kilocalories, then need not afterburning, if hazardous waste calorific value is lower than 4000 kilocalories, then need supplementary corresponding fuel, to guarantee that dual firing chamber's temperature reaches more than 1100 DEG C.Because whole dual firing chamber homogeneous temperature is stablized, the harmful substances such as dioxin are completely broken down into CO
2, HCl, H
2o, avoids dioxin to regenerate.
Further, the utility model is at dual firing chamber's bottom design plasma melting slag bath, and liner high strength refractory material, outer setting water-cooling jacket, avoids body of heater to suffer damage.The residue that rotary kiln produces enters dual firing chamber's bottom dross pond, burns away, guarantee that residual organic matter at high temperature burns completely, and be melt into vitreum, discharge through deslagging device under the high temperature that residue produces at plasmatorch.Divide according to " National Hazard refuse register ", glassy state residue does not belong to hazardous waste, only need be sent to refuse landfill landfill, greatly saves landfill cost.
The effect that the utility model is useful is:
1, there is applicability widely to hazardous waste, the hazardous waste of various form can be disposed, comprise solid-state, liquid, semisolid etc.
2, by regulating intake, realizing hazardous waste pyrolysis in rotary kiln/burn completely, controlling kiln temperature, avoiding coking.
3, dioxin is broken to CO completely by by uniform and stable high temperature in dual firing chamber
2, HCl, H
2o, avoids dioxin to regenerate within the scope of 250 DEG C-450 DEG C, guarantees that dioxin is up to standard.
4, the residue heat rate of cutting down according to the circumstance can be low to moderate 2%, forms vitreous slag, do not belong to hazardous waste after shrend, and only need deliver to refuse landfill landfill, compared with traditional rotary kiln device, cost of disposal reduces about 20%-30%, and the heat rate of cutting down according to the circumstance of slag improves 2%-3%.
5, rotary kiln size is little compared with traditional rotary kiln, saves floor space.
Accompanying drawing explanation
Following accompanying drawing of the present utility model in this as a part of the present utility model for understanding the utility model.Shown in the drawings of embodiment of the present utility model and description thereof, be used for explaining device of the present utility model and principle.In the accompanying drawings,
Fig. 1 is the structural representation of dangerous waste incineration device of the present utility model.
Accompanying drawing identifies
1, feed hopper 2, charging ram 3, burner
4, First air import 5, rotary kiln 6, wheel belt
7, gear wheel 8, afterburning burner 9, secondary air inlet
10, dual firing chamber 11, dual firing chamber's exhanst gas outlet 12, liquid waste spray gun
13, water-cooling jacket 14, plasmatorch 15, plasma melting tabetisol
16, coke layer 17, slag notch 18, anxious smoke evacuation chimney
Detailed description of the invention
In the following description, give a large amount of concrete details to provide to understand more thoroughly the utility model.But, it is obvious to the skilled person that the utility model can be implemented without the need to these details one or more.In other example, in order to avoid obscuring with the utility model, technical characteristics more well known in the art are not described.
Should be understood that, the utility model can be implemented in different forms, and should not be interpreted as the embodiment that is confined to propose here.On the contrary, provide these embodiments will expose thoroughly with complete, and scope of the present utility model is fully passed to those skilled in the art.In the accompanying drawings, in order to clear, the size in Ceng He district and relative size may be exaggerated.Same reference numerals represents identical element from start to finish.
Spatial relationship term such as " ... under ", " ... below ", " below ", " ... under ", " ... on ", " above " etc., here can be used thus the relation of the element of shown in description figure or feature and other element or feature for convenience of description.It should be understood that except the orientation shown in figure, spatial relationship term intention also comprises the different orientation of the device in using and operating.Such as, if the device upset in accompanying drawing, then, be described as " below other element " or " under it " or " under it " element or feature will be oriented to other element or feature " on ".Therefore, exemplary term " ... below " and " ... under " upper and lower two orientations can be comprised.Device can additionally orientation (90-degree rotation or other orientation) and as used herein spatial description language correspondingly explained.
The object of term is only to describe specific embodiment and not as restriction of the present utility model as used herein.When this uses, " one ", " one " and " described/to be somebody's turn to do " of singulative is also intended to comprise plural form, unless context is known point out other mode.It is also to be understood that term " composition " and/or " comprising ", when using in this specification, determine the existence of described feature, integer, step, operation, element and/or parts, but do not get rid of one or more other feature, integer, step, operation, element, the existence of parts and/or group or interpolation.When this uses, term "and/or" comprises any of relevant Listed Items and all combinations.
The utility model, by optimizing rotary structure and controlling intake, realizes refuse pyrolysis in rotary kiln/burn completely, controls the temperature in rotary kiln, avoids coking.The gas that pyrolysis produces enters dual firing chamber, passes into Secondary Air and makes it burn completely, reach 1100 DEG C, and stop more than 2 seconds, and the afterburning that the burning due to pyrolysis gas is more traditional is evenly stable, and the harmful substances such as dioxin are completely broken down into CO
2, HCl, H
2o, avoids dioxin to regenerate; Rotary kiln residue out enters the plasma melting slag bath bottom dual firing chamber, is burned further by the residue do not burned completely, and the residue of melting flows out with glassy state; vitreous slag is become after shrend; do not belong to hazardous waste, can directly be sent to refuse landfill landfill, can greatly reduce landfill cost.
Dangerous waste incineration device described in the utility model comprises feed hopper 1, charging ram 2, burner 3, First air import 4, rotary kiln 5, wheel belt 6, gear wheel 7, afterburning burner 8, secondary air inlet 9, dual firing chamber 10, dual firing chamber's exhanst gas outlet 11, liquid waste spray gun 12, water-cooling jacket 13, plasmatorch 14, plasma melting tabetisol 15, coke layer 16, slag notch 17 and anxious smoke evacuation chimney 18, as shown in Figure 1.
The novel disposal plant of described hazardous waste is primarily of rotary kiln 5, dual firing chamber 10 and residue melting zone 15 3 part composition.
Wherein, the bottom of the dual firing chamber 10 of the end connection of described rotary kiln 5 is connected, as shown in Figure 1.
The utility model is in order to solve the lime-ash incomplete combustion existed in prior art, the problem that kiln caudal knot is burnt, dioxin is not up to standard, disposal of ash and slag cost is high, provide a kind of dangerous waste incineration device, the utility model is by optimizing rotary kiln draw ratio, traditional draw ratio is optimized for 2.5-4.5:1 from traditional 4-6:1, control refuse in rotary kiln, realize pyrolysis/burn completely, the gas produced after burning enters dual firing chamber, and residue enters dual firing chamber's bottom dross pond.
Alternatively, the sidewall in the middle part of described dual firing chamber 10 is provided with some secondary air inlets 9, and described residue melting zone 15 is positioned at the below of described dual firing chamber 10, is connected with the bottom of described dual firing chamber 10.The gas that in described dangerous waste incineration device, pyrolysis produces enters dual firing chamber 10, and is full of dual firing chamber, passes into Secondary Air and makes it burn completely.
Further, the melting zone of residue described in the utility model 15 is plasma melting tabetisol, liner high strength refractory material, and outer setting water-cooling jacket 13 avoids body of heater to suffer damage.
Alternatively, the residue that rotary kiln produces enters dual firing chamber's bottom dross pond, burns away, guarantee that residual organic matter at high temperature burns completely, and be melt into vitreum, discharge through deslagging device under the high temperature that residue produces at plasmatorch.Divide according to " National Hazard refuse register ", glassy state residue does not belong to hazardous waste, only need be sent to refuse landfill landfill, greatly saves landfill cost.
Alternatively, the sidewall of described residue melting zone 15 is provided with some plasmatorch.
Further, the end of described residue melting zone 15 is communicated with slag notch 17.
Further, be also provided with anxious smoke evacuation chimney 18 at the top of described dual firing chamber 10, when blasting, described anxious smoke evacuation chimney 18 can be opened automatically.
Further, the sidewall on described dual firing chamber 10 top is also provided with dual firing chamber's exhanst gas outlet 11, clean-burning flue gas enters waste heat boiler and flue gas purification system by exporting 11.
Further, be positioned in described dual firing chamber 10 on the sidewall above described rotary kiln 5 and be provided with afterburning burner 8, described afterburning burner 8 is positioned at the below of described secondary air inlet 9, if the hazardous waste calorific value that rotary kiln enters is more than 4000 kilocalories, then need not afterburning, if hazardous waste calorific value is lower than 4000 kilocalories, then need supplementary corresponding fuel, to guarantee that dual firing chamber's temperature reaches more than 1100 DEG C, gas residence time is greater than 2s.Because whole dual firing chamber homogeneous temperature is stablized, the harmful substances such as dioxin are completely broken down into CO
2, HCl, H
2o, avoids dioxin to regenerate.
Further, the sidewall being positioned at the below of described secondary air inlet 9 in described dual firing chamber 10 is provided with liquid waste spray gun 12.
Further, described rotary kiln 5 is also provided with at least two wheel belt 6 around supporting described rotary kiln 5.
Further, be also provided with between described wheel belt 6 around the gear wheel of described rotary kiln 5 and the motor that is connected with described gear wheel.
Further, the front end of described rotary kiln 5 is connected with feed hopper 1, and in the lower end of described feed hopper 1, the front of described rotary kiln 5 is provided with charging ram 2.
Further, the top of the front end of described rotary kiln 5 is provided with burner 3.
Operation principle of the present utility model is: the flue gas of generation enters UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system through dual firing chamber's exhanst gas outlet 11.Being sent in rotary kiln 5 from feed hopper 1 hazardous waste out by charging ram 2, realizing hazardous waste pyrolysis in rotary kiln/burn completely by regulating primary air flow.Rotary kiln, when starting or temperature is lower, can be opened kiln hood burner 3 and heat up.Hazardous waste under the effect of high temperature, drying, pyrolysis, burning gradually, generation pyrolysis gas a part in rotary kiln combustion, another part enters dual firing chamber 10; The lime-ash produced slowly moves backward along with the rotation of rotary kiln, finally enters ash melting district 15.Wheel belt 6 mainly plays the effect of support rotary kiln, and the power that rotary kiln rotates is provided by the motor be connected with gear wheel.
After pyrolysis gas enters dual firing chamber 10, provide Secondary Air by overfiren air port 9, guarantee that pyrolysis gas burns completely, and the high temperature of more than 1100 DEG C is provided.Dual firing chamber's length and size need be passed through and be calculated, to guarantee that flue gas stops more than at least 2 seconds in dual firing chamber.
Because pyrolysis gas can evenly be full of whole dual firing chamber, so more traditional simple dependence afterburning produces the type of furnace of more than 1100 DEG C high temperature, in this new device dual firing chamber, flue-gas temperature more stable and uniform, thoroughly can resolve into CO by dioxin-like chemical
2, HCl, H
2o, avoids dioxin to regenerate in low-temperature zone.If hazardous waste calorific value is lower, then needs by supplementary burner 8 afterburning or spray into high heating value waste liquid by waste liquid spout 12 and guarantee that dual firing chamber's temperature reaches more than 1100 DEG C.If there is deflagration phenomenon in stove, anxious smoke evacuation chimney can be opened automatically, to protect body of heater from destruction.Clean-burning flue gas enters waste heat boiler and flue gas purification system by exporting 11.
Rotary kiln residue out enters plasma melting tabetisol 15, and coke layer is arranged in bottom, and plasmatorch can produce the high temperature of 1400-1500 DEG C, for coke layer molten ash provides heat.Melting zone liner high strength refractory material, outside with water-cooling jacket cooling, to protect cylindrical shell.Part imperfect combustion in residue burns away, and the organic principle in residue is burned completely.Flowed out by slag-drip opening 17 after residue melting, after Water Quenching, become nontoxic vitreous slag.Vitrifying melts slag by heavy metal harmful for sealing, can not leach, can not produce secondary pollution, according to the useless register of country's danger, does not belong to hazardous waste, only need be sent to refuse landfill landfill, can greatly save landfill cost.
The effect that the utility model is useful is:
1, there is applicability widely to hazardous waste, the hazardous waste of various form can be disposed, comprise solid-state, liquid, semisolid etc.
2, by regulating intake, realizing hazardous waste pyrolysis in rotary kiln/burn completely, controlling kiln temperature, avoiding coking.
3, dioxin is broken to CO completely by by uniform and stable high temperature in dual firing chamber
2, HCl, H
2o, avoids dioxin to regenerate within the scope of 250 DEG C-450 DEG C, guarantees that dioxin is up to standard.
4, the residue heat rate of cutting down according to the circumstance can be low to moderate 2%, forms vitreous slag, do not belong to hazardous waste after shrend, and only need deliver to refuse landfill landfill, compared with traditional rotary kiln device, cost of disposal reduces about 20%-30%, and the heat rate of cutting down according to the circumstance of slag improves 2%-3%.
5, rotary kiln size is little compared with traditional rotary kiln, saves floor space.
The utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment just for the object of illustrating and illustrate, and is not intended to the utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment; more kinds of variants and modifications can also be made, within these variants and modifications all drop on the utility model scope required for protection according to instruction of the present utility model.Protection domain of the present utility model defined by the appended claims and equivalent scope thereof.
Claims (14)
1. a dangerous waste incineration device, the dual firing chamber (10) of the vertical setting that the rotary kiln (5) comprising horizontally set is communicated with the end of described rotary kiln (5) with bottom, it is characterized in that, the draw ratio of described rotary kiln (5) is 2.5-4.5:1;
The sidewall at described dual firing chamber (10) middle part is provided with some secondary air inlets (9);
Described incinerator comprises the residue melting zone (15) being positioned at described dual firing chamber (10) below further, and described residue melting zone (15) is connected with the bottom of described dual firing chamber (10).
2. dangerous waste incineration device according to claim 1, is characterized in that, in described dual firing chamber (10), temperature is more than or equal to 1100 DEG C, and gas residence time is greater than 2s.
3. dangerous waste incineration device according to claim 1, is characterized in that, described residue melting zone (15) is plasma melting tabetisol.
4. dangerous waste incineration device according to claim 1, it is characterized in that, described residue melting zone (15) comprises the melting body of heater be communicated with described dual firing chamber (10) and the water-cooling jacket (13) arranged around described melting body of heater.
5. the dangerous waste incineration device according to claim 1 or 4, is characterized in that, the sidewall of described residue melting zone (15) is provided with some plasmatorch.
6. dangerous waste incineration device according to claim 1, is characterized in that, the end of described residue melting zone (15) is communicated with slag notch (17).
7. dangerous waste incineration device according to claim 1, is characterized in that, is also provided with anxious smoke evacuation chimney (18) at the top of described dual firing chamber (10).
8. dangerous waste incineration device according to claim 1, is characterized in that, the sidewall on described dual firing chamber (10) top is also provided with dual firing chamber's exhanst gas outlet (11).
9. dangerous waste incineration device according to claim 1, it is characterized in that, the sidewall of described dual firing chamber (10) is also provided with afterburning burner (8), described afterburning burner (8) is positioned at the below of described secondary air inlet (9) and the top of described rotary kiln (5).
10. dangerous waste incineration device according to claim 1, it is characterized in that, the sidewall of described dual firing chamber (10) is provided with liquid waste spray gun (12), described liquid waste spray gun (12) is positioned at the below of described secondary air inlet (9).
11. dangerous waste incineration devices according to claim 1, is characterized in that, described rotary kiln (5) are also provided with at least two wheel belt (6) around supporting described rotary kiln (5).
12. dangerous waste incineration devices according to claim 11, is characterized in that, are also provided with around the gear wheel of described rotary kiln (5) and the motor that is connected with described gear wheel between described wheel belt (6).
13. dangerous waste incineration devices according to claim 1, it is characterized in that, the front end of described rotary kiln (5) is connected with feed hopper (1), and in the lower end of described feed hopper (1), the front of described rotary kiln (5) is provided with charging ram (2).
14. dangerous waste incineration devices according to claim 1, is characterized in that, the top of the front end of described rotary kiln (5) is provided with burner (3).
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