CN107101498A - The method for reducing dangerous waste incinerator rotary kiln coking - Google Patents
The method for reducing dangerous waste incinerator rotary kiln coking Download PDFInfo
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- CN107101498A CN107101498A CN201710261959.4A CN201710261959A CN107101498A CN 107101498 A CN107101498 A CN 107101498A CN 201710261959 A CN201710261959 A CN 201710261959A CN 107101498 A CN107101498 A CN 107101498A
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- Prior art keywords
- rotary kiln
- incinerated matter
- coking
- kiln
- dangerous waste
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
- Y02A40/924—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation using renewable energies
- Y02A40/928—Cooking stoves using biomass
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- Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of method for reducing dangerous waste incinerator rotary kiln coking, comprise the following steps：First incinerated matter and the second incinerated matter are no more than 1 according to mass ratio:10 ratio mixing input rotary kiln is burned；Wherein, first incinerated matter is the incinerated matter that ash fusion point is less than 900 DEG C, second incinerated matter is incinerated matter of the ash fusion point more than 900 DEG C, oxygen volume content during burning in the rotary kiln is set to 4%~6%, the rotating speed of rotary kiln is 0.3~0.4rpm, incineration temperature is 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is 10~0Pa.By the way that incinerated matter is divided into incinerated matter of the ash fusion point less than 900 DEG C and incinerated matter of the ash fusion point more than 900 DEG C, and 1 is no more than according to mass ratio:10 ratio is burned, and makes the fusing of the material compared with low ash smelting point be difficult to effectively adhere to other materials, while can also be kept apart by other materials and can not rapidly assemble agglomerating, significantly reduces the coking amount of rotary kiln kiln tail in the process of running.
Description
Technical field
It is more particularly to a kind of to reduce dangerous waste incinerator rotary kiln caudal knot the present invention relates to rotary kiln technical field
Burnt method.
Background technology
Rotary kiln refers to rotary calcining kiln (being commonly called as rotary kiln), in many production industries such as building materials, metallurgy, chemical industry, environmental protection,
It is widely used in carrying out machinery, physical or chemical treatment to solid material.In terms of environmental protection, developed country utilizes back in the world
Rotary kiln burns the history in hazardous waste, rubbish existing more than 20 years, and this not only makes wastes reduction, innoxious, and waste is made
For fuel utilization, coal dust is saved, the recycling of waste is realized.With the continuous improvement that China is required dangerous waste disposal,
Rotary kiln coordinates application of the processing mode of dual firing chamber in dangerous waste incineration more and more extensive.
However, at present in the running of dangerous waste incinerator rotary kiln, kiln tail portion would generally promptly coking, lead
Cause rotary kiln afterbody volume drastically to reduce, the normal of rotary kiln will be influenceed to slag tap when coking reaches certain thickness, caused
Rotary kiln stops production.
The content of the invention
Based on this, it is necessary to which for above-mentioned dangerous waste incinerator rotary kiln, kiln tail can rapid coking in the process of running
There is provided a kind of method for reducing dangerous waste incinerator rotary kiln coking for problem.
Specific technical scheme is as follows：
A kind of method for reducing dangerous waste incinerator rotary kiln coking, comprises the following steps：
First incinerated matter and the second incinerated matter are no more than 1 according to mass ratio:10 ratio mixing input rotary kiln is carried out
Burn；Wherein, first incinerated matter is the incinerated matter that ash fusion point is less than 900 DEG C, and second incinerated matter is ash fusion point 900
Incinerated matter more than DEG C, oxygen volume content during burning in the rotary kiln is set to 4%~6%, and the rotating speed of rotary kiln is 0.3
~0.4rpm, incineration temperature is 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa.
During burning disposal waste, the composition of incinerated matter is complex, and it has during high temperature incineration
Waste containing compared with low ash smelting point material, such as glass, the packing material containing magnalium, sodium carbonate etc., begin to fusing when temperature is relatively low,
And compared with the iron oxide in low ash smelting point material also easily with compared with high ash melting point material silicon dioxde reaction formation ash fusion point it is relatively low
2FeOSiO2, these are very sticky at high temperature compared with low ash smelting point material, and they can occur itself to bond and adhere to other
Material and the quick coking in rotary kiln.The present invention is melted by the way that incinerated matter is divided into incinerated matter of the ash fusion point less than 900 DEG C with ash
Incinerated matter o'clock more than 900 DEG C, and it is no more than 1 according to mass ratio:10 ratio is burned, and makes ash fusion point in burning process
The fusing of relatively low material is difficult to effectively adhere to other materials, at the same can also be kept apart by other materials and can not be quick
Ground aggregation is agglomerating, and the iron oxide in low ash smelting point material also can not promptly react a large amount of generation 2FeO with silica in addition
SiO2, the coking of rotary kiln kiln tail in the process of running is finally significantly reduced, makes the cycle of rotary kiln even running longer.
Oxygen content is arranged on 4% or so, incinerated matter can be made to carry out anaerobism burning in rotary kiln, generation can not only be avoided substantial amounts of
Heat causes temperature drastically to raise, and is conducive to making the temperature in rotary kiln to keep stable and reduces coking, and can produce a large amount of
Carbon monoxide, these carbon monoxide can in follow-up dual firing chamber further fully burning, it is possible to reduce auxiliary fuel
Input, reduces cost.In addition the rotating speed of rotary kiln can not be too low or too high, to avoid incinerated matter from normally can not overturning or burn
The increase of coking speed is not caused thoroughly, while negative pressure is bigger, heat losses are faster, therefore furnace pressure is maintained into tiny structure, can
To reduce the consumption of kiln hood fuel oil.
In one of the embodiments, first incinerated matter includes at least one in aluminium slag, scruff, glass and plastics
Kind, second incinerated matter includes at least one of industrial sludge, film slag, Oil Paint Slag and calcium hydroxide.
In one of the embodiments, first incinerated matter includes aluminium slag, scruff, glass and plastics, and described second burns
Burning thing includes industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, and the aluminium slag, scruff, the mass ratio of glass and plastics are 1:2
~3:2~3:0.5~1, the industrial sludge, film slag, the mass ratio of Oil Paint Slag and calcium hydroxide are 1:1~2:1~2:3~5.
In one of the embodiments, it is further comprising the steps of：At interval of preset time period, stop throwing to the rotary kiln
Material, the incineration temperature of the rotary kiln is improved to more than 1200 DEG C, until the coking of kiln tail is melted.
In one of the embodiments, the incineration temperature of the rotary kiln is improved specific to more than 1200 DEG C of operation
For：Calorific value is added into the rotary kiln improves incineration temperature in 8500 kilocalories/more than kg fuel oil.
In one of the embodiments, the diesel oil amount of the burner of the rotary kiln is 30~50g/s, atomization gas during burning
Flow is 12~15m3/ h, pressure is 0.2~0.4MPa.
In one of the embodiments, first incinerated matter and the mixed calorific value of the second incinerated matter be 3000~
3500 kilocalories/kg.
In one of the embodiments, inventory hourly is no more than rotary kiln design treatment per hour during burning
The 80% of amount.
In one of the embodiments, the kiln tail sealing structure of the rotary kiln includes：Kiln hood and with the kiln hood
The sealing shroud of connection, the sealing shroud can be sheathed on the lateral wall of the kiln tail of the rotary kiln, and with the kiln tail of the rotary kiln
Lateral wall abut so that the kiln hood and the kiln tail of the rotary kiln are tightly connected.
In one of the embodiments, the sealing shroud is followed successively by 2Cr13 stainless steel layers, carbon sial composite plate from the inside to the outside
Layer and steel plate fish scale lamella.
Brief description of the drawings
Fig. 1 be an embodiment in kiln tail sealing structure structural representation.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being installed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be direct connection
To another element or it may be simultaneously present centering elements.When an element is considered as " connection " another element, it can
To be directly to another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all combination of the Listed Items of pass.
A kind of method of reduction dangerous waste incinerator rotary kiln coking of one embodiment of the invention, including following step
Suddenly：
S10：First incinerated matter and the second incinerated matter are no more than 1 according to mass ratio:10 ratio mixing input rotary kiln
Burned；Wherein, the first incinerated matter is that ash fusion point is less than 900 DEG C of incinerated matter, the second incinerated matter be ash fusion point 900 DEG C with
On incinerated matter, oxygen volume content during burning in rotary kiln is set to 4%~6%, the rotating speed of rotary kiln for 0.3~
0.4rpm, incineration temperature is 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa.
Ash fusion point be ash content in solid fuel after certain temperature is reached, temperature when deforming, soften and melting
Degree.Ash content is inorganic matter, can be calcination after residue can also be drying after residue.I.e. in high temperature, material hair
Raw a series of physical and chemical change, last organic principle volatilization loss, and inorganic constituents (mainly inorganic salts and oxide)
Then it left behind, these residues are referred to as ash content.
During burning disposal waste, the composition of incinerated matter is complex, and it has during high temperature incineration
Waste containing compared with low ash smelting point material, such as glass, the packing material (650 DEG C of ash fusion point) containing magnalium, sodium carbonate (ash fusion point 854
DEG C) etc., begun to when temperature is relatively low fusing, and compared with the iron oxide in low ash smelting point material also easily with compared with high ash melting point material
The relatively low 2FeOSiO of silicon dioxde reaction formation ash fusion point2, these are very sticky at high temperature compared with low ash smelting point material, it
Can occur itself to bond and adhere to other materials and the quick coking in rotary kiln.The present invention is molten by the way that incinerated matter is divided into ash
Incinerated matter of the point less than 900 DEG C and incinerated matter of the ash fusion point more than 900 DEG C, and it is no more than 1 according to mass ratio:10 ratio is entered
Row is burned, and makes the fusing of the relatively low material of ash fusion point in burning process be difficult to effectively adhere to other materials, while can also be by it
He keeps apart and can not rapidly assemble agglomerating at material, in addition the iron oxide in low ash smelting point material and silica also without
Method promptly reacts a large amount of generation 2FeOSiO2, the coking of rotary kiln kiln tail in the process of running is finally significantly reduced,
Make the cycle of rotary kiln even running longer.Oxygen content is arranged on 4% or so, incinerated matter can be made to carry out anaerobism in rotary kiln
Burning, can not only avoid producing substantial amounts of heat causes temperature drastically to raise, and is conducive to making the temperature in rotary kiln to keep steady
Surely coking is reduced, and substantial amounts of carbon monoxide can be produced, these carbon monoxide can be in follow-up dual firing chamber further
Fully burning, it is possible to reduce the input of auxiliary fuel, reduces cost.In addition the rotating speed of rotary kiln can not be too low or too high, to keep away
Exempt from incinerated matter can not normally overturn or burn do not cause thoroughly coking speed increase, while negative pressure is bigger, heat losses are got over
It hurry up, therefore furnace pressure maintained into tiny structure, it is possible to reduce the consumption of kiln hood fuel oil.
Alternatively, intake can be controlled by adjusting the frequency of kiln hood blower fan, so as to adjust oxygen content.For 10m length,
For internal diameter 3m rotary kiln, the intake of rotary kiln end blower fan can be controlled in 1500m3/ H or so, it will be understood that regulation
The mode not limited to this of oxygen content.
Specifically, the first incinerated matter includes at least one of aluminium slag, scruff, glass and plastics, and the second incinerated matter includes
At least one of industrial sludge, film slag (useless film), Oil Paint Slag (paint slag) and calcium hydroxide.
Specific in an embodiment, the first incinerated matter includes aluminium slag, scruff, glass and plastics, the second incinerated matter bag
Include industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, aluminium slag, scruff, the mass ratio of glass and plastics are 1:2~3:2~3:
0.5~1, industrial sludge, film slag, the mass ratio of Oil Paint Slag and calcium hydroxide are 1:1~2:1~2:3~5.In burning process,
This several incinerated matter collocation is burned together, the coking amount of rotary kiln is less, can make the time of rotary kiln even running
Longer, so as to effectively cooperate with processing aluminium slag, scruff, glass, plastics, industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, this is several
Incinerating waste material is planted, it is more stable more efficient than individually burning.
In one embodiment, it is further comprising the steps of：
S20：At interval of preset time period, stop feeding intake to rotary kiln, the incineration temperature of rotary kiln is improved to 1200 DEG C
More than, until the coking of rotary kiln is melted.
Alternatively, it can carry incineration temperature at 8500 kilocalories/more than kg fuel oil by adding calorific value into rotary kiln
It is high.In order to avoid kiln tail coking is serious, or when more serious coking has occurred in kiln tail, it can make what is produced by the step
Coking fusing further makes the cycle stretch-out of rotary kiln even running so as to fall into dragveyer.The side of traditional artificial coke cleaning
Method, due in the case of the high temperature spent 1000, on the one hand easily making one to scald, on the other hand when opening manhole door makes the external world more
After cold wind is entered, temperature is drastically reduced, and the hardness of kiln tail coking will be higher, and cleaning is more difficult on the contrary.Therefore compared to traditional
Artificial coke cleaning method, the method for the present embodiment is safer more effective.
In one embodiment, during burning the burner of rotary kiln diesel oil amount be 30~50g/s, atomization gas flow be 12~
15m3/ h, pressure is 0.3MPa.
In one embodiment, the first incinerated matter and the mixed calorific value of the second incinerated matter are 3000~3500 kilocalories/kg.Heat
If value is too low, it would be desirable to consume substantial amounts of fuel oil, if calorific value is too high, the temperature in rotary kiln is easily higher, it is difficult to control
System is in more stable state.
In one embodiment, during burning inventory hourly no more than rotary kiln design treatment amount per hour
80%.Such as rotary kiln design treatment amount is 30 ton days, then controls inventory to be advisable no more than 1000kg/ hours, it is to avoid kiln tail
The short time interior effect for producing more coking and accumulating generation Cascaded amplification.
In one embodiment, as shown in figure 1, the kiln tail sealing structure 100 of rotary kiln 200 includes kiln hood 110 and sealing
Set 120, sealing shroud 120 is connected with kiln hood 110.Sealing shroud 120 can be sheathed on the lateral wall of the kiln tail 210 of rotary kiln 200, and
Abutted with the lateral wall of kiln tail 210, so that kiln hood 110 is tightly connected with kiln tail 210, preventing from leaking out at kiln tail 210 causes office
Portion's cooling coking.
In one embodiment, sealing shroud 120 is followed successively by 2Cr13 stainless steel layers, carbon sial and is combined flaggy and steel from the inside to the outside
Sole scale layer, with high temperature resistant, corrosion-resistant and the features such as seal tight, can be prevented effectively to leak out at kiln tail 210 and cause local drop
Temperature and coking.
In one embodiment, the outer surface of sealing shroud 120 is circumferentially wound with fastener (not shown), kiln hood 110 and set
There is fixed mount (not shown), one end of fastener is connected with fixed mount, the other end of fastener is connected with counterweight (not shown).
Fastener banding sealing shroud 120 is made by counterweight, sealing shroud 120 has worn and torn in the process of running to be remained to keep and kiln tail
210 lateral wall is abutted, and maintains sealing state, it is to avoid cool ambient air enters and coking.In the present embodiment, fastener is steel
Cord, it will be understood that not limited to this, can be arranged as required to.
The method of the reduction dangerous waste incinerator rotary kiln coking of the present invention is by controlling different ash fusion points to burn
The measures such as the ratio of thing, process conditions, the collocation of incinerated matter and the selection of kiln tail sealing structure of rotary kiln burned, significantly
Ground reduces the coking amount of rotary kiln kiln tail in the process of running, makes the cycle of rotary kiln even running longer.
Embodiment 1
Ash fusion point is less than the second burning of 900 DEG C of the first incinerated matter aluminium slag and scruff with ash fusion point more than 900 DEG C
Thing film slag and Oil Paint Slag are according to mass ratio 1:10 ratio mixing input rotary kiln is burned, and the first incinerated matter burns with second
It is 3000 kilocalories/kg to burn the mixed calorific value of thing.It is 4% that the oxygen content in rotary kiln is controlled during burning, and the rotating speed of rotary kiln is
0.3rpm, incineration temperature is 1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10Pa, the burner of rotary kiln
Diesel oil amount is 30g/s, and atomization gas flow is 12m3/ h, pressure is 0.3MPa.After total amount is finished for 1 ton of incinerated matter burning,
The coking thickness of kiln tail is 0.54cm.
Embodiment 2
Ash fusion point is less than into second incinerated matter of 900 DEG C of the first incinerated matter plastics with ash fusion point more than 900 DEG C to paint
Slag is according to mass ratio 0.5:10 ratio mixing input rotary kiln is burned, and the first incinerated matter and the second incinerated matter are mixed
Calorific value is 3500 kilocalories/kg.It is 4% that the oxygen content in rotary kiln is controlled during burning, and the rotating speed of rotary kiln is 0.4rpm, burns temperature
Spend for 950 DEG C, exit gas temperature is 900~950 DEG C, furnace pressure is 0Pa, and the diesel oil amount of the burner of rotary kiln is 50g/s, mist
Change throughput is 15m3/ h, pressure is 0.3MPa.After total amount is finished for 1 ton of incinerated matter burning, the coking thickness of kiln tail is
0.63cm。
Embodiment 3
By aluminium slag, scruff, glass and plastics according to mass ratio 1:2.5:2.5:1 mixing is as the first incinerated matter, by industry
Sludge, film slag, Oil Paint Slag and calcium hydroxide are according to mass ratio 1:1.5:1.5:4 mixing are as the second incinerated matter, then by first
Incinerated matter and the second incinerated matter are according to mass ratio 1:10 ratio input rotary kiln is burned, and the first incinerated matter and second is burned
The mixed calorific value of thing is 3300 kilocalories/kg.It is 4% that the oxygen content in rotary kiln is controlled during burning, and the rotating speed of rotary kiln is
0.3rpm, incineration temperature is 900 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10Pa, the burner of rotary kiln
Diesel oil amount is 30g/s, and atomization gas flow is 12m3/ h, pressure is 0.3MPa.After total amount is finished for 1 ton of incinerated matter burning,
The coking thickness of kiln tail is 0.37cm.
Embodiment 4
By aluminium slag, scruff, glass and plastics according to mass ratio 1:1:1:1 mixing as the first incinerated matter, by industrial sludge,
Film slag, Oil Paint Slag and calcium hydroxide are according to mass ratio 1:1:1:1 mixing is as the second incinerated matter, then by the first incinerated matter and the
Two incinerated matters are according to mass ratio 1:10 ratio input rotary kiln is burned, and the first incinerated matter and the second incinerated matter are mixed
Calorific value is 3000 kilocalories/kg.It is 4% that the oxygen content in rotary kiln is controlled during burning, and the rotating speed of rotary kiln is 0.3rpm, burns temperature
Spend for 1000 DEG C, exit gas temperature is 900~950 DEG C, furnace pressure is -3Pa, and the diesel oil amount of the burner of rotary kiln is 30g/s,
Atomization gas flow is 12m3/ h, pressure is 0.3MPa.After total amount is finished for 1 ton of incinerated matter burning, the coking thickness of kiln tail
For 0.55cm.
Comparative example 1
Ash fusion point is less than to 900 DEG C of the first incinerated matter aluminium slag and the second incinerated matter film of the ash fusion point more than 900 DEG C
Slag is according to mass ratio 1:2 ratio mixing input rotary kiln is burned, the first incinerated matter and the mixed heat of the second incinerated matter
It is worth for 3000 kilocalories/kg.It is 4% that the oxygen content in rotary kiln is controlled during burning, and the rotating speed of rotary kiln is 0.3rpm, incineration temperature
For 900 DEG C, exit gas temperature is 900~950 DEG C, and furnace pressure is -6Pa, and the diesel oil amount of the burner of rotary kiln is 30g/s, mist
Change throughput is 12m3/ h, pressure is 0.3MPa.After total amount is finished for 1 ton of incinerated matter burning, the coking thickness of kiln tail is
5.1cm。
Comparative example 2
By incinerated matter scruff of the ash fusion point less than 1000 DEG C with incinerated matter coal of the ash fusion point more than 1000 DEG C according to 1:
10 ratio mixing input rotary kiln is burned, and the mixed calorific value of incinerated matter is 3600 kilocalories/kg.Revolution is controlled during burning
Oxygen content in kiln is 4%, and the rotating speed of rotary kiln is 0.3rpm, and incineration temperature is 1000 DEG C, exit gas temperature is 900~
950 DEG C, furnace pressure is -6Pa, and the diesel oil amount of the burner of rotary kiln is 30g/s, and atomization gas flow is 12m3/ h, pressure is
0.3MPa.After total amount is finished for 1 ton of incinerated matter burning, the coking thickness of kiln tail is 4.35cm.
By embodiment 1-4 and comparative example 1-2, exist according to method of the invention, it is possible to significantly decrease rotary kiln
The coking amount of kiln tail in running, makes the cycle of rotary kiln even running longer, and can effectively cooperate with processing aluminium slag,
This several incinerating waste material of scruff, glass, plastics, industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, than individually burning more
Stabilization efficiency is higher.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of method for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that comprise the following steps：
First incinerated matter and the second incinerated matter are no more than 1 according to mass ratio:10 ratio mixing input rotary kiln is burned；
Wherein, first incinerated matter is that ash fusion point is less than 900 DEG C of incinerated matter, second incinerated matter be ash fusion point 900 DEG C with
On incinerated matter, oxygen volume content during burning in the rotary kiln is set to 4%~6%, the rotating speed of rotary kiln for 0.3~
0.4rpm, incineration temperature is 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa.
2. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that institute
The first incinerated matter is stated at least one of including aluminium slag, scruff, glass and plastics, second incinerated matter include industrial sludge,
At least one of film slag, Oil Paint Slag and calcium hydroxide.
3. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that institute
Stating the first incinerated matter includes aluminium slag, scruff, glass and plastics, and second incinerated matter includes industrial sludge, film slag, Oil Paint Slag
And calcium hydroxide, the aluminium slag, scruff, the mass ratio of glass and plastics are 1:2~3:2~3:0.5~1, the industrial sludge, phenanthrene
The mass ratio of woods slag, Oil Paint Slag and calcium hydroxide is 1:1~2:1~2:3~5.
4. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that also
Comprise the following steps：At interval of preset time period, stop feeding intake to the rotary kiln, the incineration temperature of the rotary kiln is improved
To more than 1200 DEG C, until the coking of kiln tail is melted.
5. the method according to claim 4 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that will
The incineration temperature of the rotary kiln is improved to more than 1200 DEG C of operation：Calorific value is added into the rotary kiln 8500
Kilocalorie/more than kg fuel oil improves incineration temperature.
6. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that burn
The diesel oil amount of the burner of the rotary kiln is 30~50g/s during burning, and atomization gas flow is 12~15m3/ h, pressure be 0.2~
0.4MPa。
7. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that institute
It is 3000~3500 kilocalories/kg that the first incinerated matter, which is stated, with the mixed calorific value of the second incinerated matter.
8. the method according to claim 1 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that burn
During burning inventory hourly no more than the rotary kiln per hour design treatment amount 80%.
9. the method for the reduction dangerous waste incinerator rotary kiln coking according to claim any one of 1-8, it is special
Levy and be, the kiln tail sealing structure of the rotary kiln includes：Kiln hood and the sealing shroud being connected with the kiln hood, the sealing
Set can be sheathed on the lateral wall of the kiln tail of the rotary kiln, and be abutted with the lateral wall of the kiln tail of the rotary kiln, so that described
Kiln hood and the kiln tail of the rotary kiln are tightly connected.
10. the method according to claim 9 for reducing dangerous waste incinerator rotary kiln coking, it is characterised in that
The sealing shroud is followed successively by 2Cr13 stainless steel layers, carbon sial and is combined flaggy and steel plate fish scale lamella from the inside to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710261959.4A CN107101498B (en) | 2017-04-20 | 2017-04-20 | The method for reducing the coking of dangerous waste incinerator rotary kiln |
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| CN110879014A (en) * | 2019-11-14 | 2020-03-13 | 云南大地丰源环保有限公司 | Online self-coke-cleaning technology for rotary kiln of hazardous waste incineration system |
| CN111023101A (en) * | 2019-12-27 | 2020-04-17 | 杭州立佳环境服务有限公司 | Method for establishing kiln skin of hazardous waste incineration rotary kiln |
| CN111288462A (en) * | 2020-02-20 | 2020-06-16 | 陕西新天地固体废物综合处置有限公司 | System and method for separating heat and treating cyanide |
| CN114705059A (en) * | 2022-03-15 | 2022-07-05 | 安徽锦美碳材科技发展有限公司 | Process for online cleaning residual bonding material in furnace |
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| CN110879014A (en) * | 2019-11-14 | 2020-03-13 | 云南大地丰源环保有限公司 | Online self-coke-cleaning technology for rotary kiln of hazardous waste incineration system |
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| CN111023101B (en) * | 2019-12-27 | 2021-12-28 | 杭州立佳环境服务有限公司 | Method for establishing kiln skin of hazardous waste incineration rotary kiln |
| CN111288462A (en) * | 2020-02-20 | 2020-06-16 | 陕西新天地固体废物综合处置有限公司 | System and method for separating heat and treating cyanide |
| CN114705059A (en) * | 2022-03-15 | 2022-07-05 | 安徽锦美碳材科技发展有限公司 | Process for online cleaning residual bonding material in furnace |
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