CN107101498B - The method for reducing the coking of dangerous waste incinerator rotary kiln - Google Patents
The method for reducing the coking of dangerous waste incinerator rotary kiln Download PDFInfo
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- CN107101498B CN107101498B CN201710261959.4A CN201710261959A CN107101498B CN 107101498 B CN107101498 B CN 107101498B CN 201710261959 A CN201710261959 A CN 201710261959A CN 107101498 B CN107101498 B CN 107101498B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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Abstract
The present invention relates to a kind of methods for reducing the coking of dangerous waste incinerator rotary kiln, comprising the following steps: the ratio by the first incinerated matter and the second incinerated matter according to mass ratio no more than 1:10 mixes investment rotary kiln and burns；Wherein, first incinerated matter is incinerated matter of the ash fusion point less than 900 DEG C, second incinerated matter is incinerated matter of the ash fusion point at 900 DEG C or more, oxygen volume content when burning in the rotary kiln is set as 4%~6%, the revolving 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 the incinerated matter of incinerated matter of the ash fusion point less than 900 DEG C and ash fusion point at 900 DEG C or more, and the ratio according to mass ratio no more than 1:10 is burned, the fusing of the substance compared with low ash smelting point is set to be difficult to effectively adhere to other substances, it can also be kept apart simultaneously by other substances and cannot rapidly assemble agglomerating, reduce the coking amount of rotary kiln kiln tail in the process of running significantly.
Description
Technical field
The present invention relates to rotary kiln technologies, more particularly to a kind of reduction dangerous waste incinerator rotary kiln caudal knot
Burnt method.
Background technique
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 mechanical, physical or chemical treatment to solid material.In environmental protection, developed country utilizes back in the world
Rotary kiln burns hazardous waste, rubbish has the history in more than 20 years, this not only makes wastes reduction, innoxious, but also waste is made
For fuel utilization, coal dust is saved, the recycling of waste is realized.With the continuous improvement that China requires dangerous waste disposal,
Rotary kiln cooperate dual firing chamber processing mode in dangerous waste incineration using more and more extensive.
However, at present in the operational process of dangerous waste incinerator rotary kiln, kiln tail portion would generally promptly coking, lead
It causes rotary kiln tail portion volume sharply to reduce, just will affect normally slagging tap for rotary kiln when coking reaches certain thickness, cause
Rotary kiln stops production.
Summary 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
Problem provides a kind of method for reducing the coking of dangerous waste incinerator rotary kiln.
Specific technical solution is as follows:
A method of reducing the coking of dangerous waste incinerator rotary kiln, comprising the following steps:
Ratio by the first incinerated matter and the second incinerated matter according to mass ratio no more than 1:10 mixes investment rotary kiln and carries out
It burns；Wherein, first incinerated matter is incinerated matter of the ash fusion point less than 900 DEG C, and second incinerated matter is ash fusion point 900
DEG C or more incinerated matter, the oxygen volume content in when burning rotary kiln is set as 4%~6%, and the revolving speed of rotary kiln is 0.3
~0.4rpm, incineration temperature are 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa.
During burning disposal waste, the ingredient of incinerated matter is complex, has during high temperature incineration
Containing waste compared with low ash smelting point substance, such as glass, the packing material containing magnalium, sodium carbonate etc., begin to melt when temperature is lower,
And compared with the iron oxide in low ash smelting point substance also be easy with compared with high ash melting point substance silicon dioxde reaction formation ash fusion point it is lower
2FeOSiO2, these are very sticky at high temperature compared with low ash smelting point substance, they can occur itself to bond and adhere to other
Substance 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
O'clock in 900 DEG C or more of incinerated matter, and the ratio according to mass ratio no more than 1:10 is burned, and ash fusion point in burning process is made
The fusing of lower substance is difficult to effectively adhere to other substances, at the same can also be kept apart by other substances and cannot be quick
Ground aggregation is agglomerating, and furthermore the iron oxide in low ash smelting point substance also can not promptly react a large amount of generation 2FeO with silica
SiO2, finally reduce the coking of rotary kiln kiln tail in the process of running significantly, keep the period of rotary kiln even running longer.
Oxygen content is arranged 4% or so, incinerated matter can be made to carry out anaerobism burning in rotary kiln, can not only avoid generating a large amount of
Heat causes temperature sharply to increase, and is conducive to make the temperature in rotary kiln to keep stablizing reduction coking, and can produce a large amount of
Carbon monoxide, these carbon monoxide can in subsequent dual firing chamber further full combustion, it is possible to reduce auxiliary fuel
Investment, reduces cost.Furthermore the revolving speed of rotary kiln cannot be too low or excessively high, normally can not overturn or burn to avoid incinerated matter
It is not thorough and coking speed is caused to increase, while negative pressure is bigger, heat losses are faster, therefore furnace pressure is maintained tiny structure, can
To reduce the consumption of kiln hood fuel oil.
First incinerated matter includes at least one in aluminium slag, scruff, glass and plastics in one of the embodiments,
Kind, second incinerated matter includes at least one of industrial sludge, film slag, Oil Paint Slag and calcium hydroxide.
First incinerated matter includes aluminium slag, scruff, glass and plastics in one of the embodiments, and described second burns
Burning object includes industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, the aluminium slag, scruff, glass and plastics mass ratio be 1:2
~3:2~3:0.5~1, the industrial sludge, film slag, Oil Paint Slag and calcium hydroxide mass ratio be 1:1~2:1~2:3~5.
It is further comprising the steps of in one of the embodiments: at interval of preset time period, to stop throwing to the rotary kiln
Material, the incineration temperature of the rotary kiln is improved to 1200 DEG C or more, until the coking of kiln tail is melted.
The incineration temperature of the rotary kiln is improved in one of the embodiments, specific to 1200 DEG C or more of operation
Are as follows: calorific value is added in Xiang Suoshu rotary kiln improves incineration temperature in 8500 kilocalories/kg or more fuel oil.
The diesel oil amount of the burner of the rotary kiln is 30~50g/s, atomization gas when burning in one of the embodiments,
Flow is 12~15m3/ h, pressure are 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.
Inventory hourly is no more than rotary kiln design treatment per hour when burning in one of the embodiments,
The 80% of amount.
In one of the embodiments, the kiln tail sealing structure of the rotary kiln include: 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 the kiln tail with the rotary kiln
Lateral wall abut so that the kiln tail of the kiln hood and the rotary kiln is tightly connected.
The sealing shroud is followed successively by 2Cr13 stainless steel layer, carbon sial composite plate from the inside to the outside in one of the embodiments,
Layer and steel plate fish scale lamella.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the kiln tail sealing structure in an embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
It should be noted that it can directly on the other element when element is referred to as " being installed on " another element
Or there may also be elements 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 technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention 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
Any and all combinations of the listed item of pass.
A kind of method of reduction dangerous waste incinerator rotary kiln coking of one embodiment of the invention, including following step
It is rapid:
S10: the ratio by the first incinerated matter and the second incinerated matter according to mass ratio no more than 1:10 mixes investment rotary kiln
It is burned；Wherein, the first incinerated matter be incinerated matter of the ash fusion point less than 900 DEG C, the second incinerated matter be ash fusion point 900 DEG C with
On incinerated matter, oxygen volume content when burning in rotary kiln is set as 4%~6%, the revolving speed of rotary kiln is 0.3~
0.4rpm, incineration temperature are 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa.
Ash fusion point is temperature of the ash content after reaching certain temperature, when deforming, soften and melting in solid fuel
Degree.Ash content is inorganic matter, and the residue after can be calcination is also possible to the residue after drying.I.e. at high temperature, substance is sent out
Raw a series of physical and chemical change, last organic principle volatilization loss, and inorganic constituents (mainly inorganic salts and oxide)
It then left behind, these residues are known as ash content.
During burning disposal waste, the ingredient of incinerated matter is complex, has during high temperature incineration
Containing the waste compared with low ash smelting point substance, such as glass, the packing material (650 DEG C of ash fusion point) containing magnalium, sodium carbonate (ash fusion point 854
DEG C) etc., begin to melt when temperature is lower, and compared with the iron oxide in low ash smelting point substance also be easy with compared with high ash melting point substance
Silicon dioxde reaction forms the lower 2FeOSiO of ash fusion point2, these are very sticky at high temperature compared with low ash smelting point substance, 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
The incinerated matter of incinerated matter and ash fusion point at 900 DEG C or more o'clock less than 900 DEG C, and the ratio according to mass ratio no more than 1:10 into
Row burns, and makes the fusing of the lower substance of ash fusion point in burning process be difficult to effectively adhere to other substances, while can also be by it
His substance keep apart and cannot rapidly assemble it is agglomerating, furthermore the iron oxide in low ash smelting point substance and silica also without
Method promptly reacts a large amount of and generates 2FeOSiO2, finally reduce the coking of rotary kiln kiln tail in the process of running significantly,
Keep the period of rotary kiln even running longer.Oxygen content is arranged 4% or so, incinerated matter can be made to carry out anaerobism in rotary kiln
Burning, can not only avoid generating a large amount of heat causes temperature sharply to increase, and is conducive to make the temperature in rotary kiln to keep steady
Surely coking is reduced, and can produce a large amount of carbon monoxide, these carbon monoxide can be in subsequent dual firing chamber further
Full combustion, it is possible to reduce the investment of auxiliary fuel reduces cost.Furthermore the revolving speed of rotary kiln cannot be too low or excessively high, to keep away
Exempt from incinerated matter and can not normally overturn or burn to be not thorough that coking speed is caused to increase, while negative pressure is bigger, and heat losses are got over
Fastly, therefore by furnace pressure tiny structure is maintained, it is possible to reduce the consumption of kiln hood fuel oil.
Optionally, intake can be controlled by adjusting the frequency of kiln hood blower fan, to adjust oxygen content.For 10m long,
For the rotary kiln of internal diameter 3m, the intake of rotary kiln end blower can be controlled in 1500m3/ H or so, it will be understood that adjust
The mode of oxygen content is without being limited thereto.
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 packet
Include industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, aluminium slag, scruff, glass and plastics mass ratio be 1:2~3:2~3:
0.5~1, industrial sludge, film slag, Oil Paint Slag and calcium hydroxide mass ratio be 1:1~2:1~2:3~5.During the burning process,
The collocation of these types of incinerated matter is burned together, the coking amount of rotary kiln is less, can make the time of rotary kiln even running
Longer, to effectively cooperate with processing aluminium slag, scruff, glass, plastics, industrial sludge, film slag, Oil Paint Slag and calcium hydroxide, this is several
Kind incinerating waste material, it is more stable more efficient than individually burning.
In one embodiment, further comprising the steps of:
S20: at interval of preset time period, stopping feeding intake to rotary kiln, and the incineration temperature of rotary kiln is improved to 1200 DEG C
More than, until the coking of rotary kiln is melted.
Optionally, incineration temperature can be made to mention in 8500 kilocalories/kg or more fuel oil by the way that calorific value is added into rotary kiln
It is high.In order to avoid kiln tail coking is serious, or when kiln tail has already appeared more serious coking, can make to have generated by the step
Coking fusing further makes the cycle stretch-out of rotary kiln even running to fall into dragveyer.The side of traditional artificial coke cleaning
Method, due to spent more than 1000 high temperature in the case where, be on the one hand easy to make one to scald, on the other hand when open manhole door make the external world
After cold wind is entered, temperature is drastically reduced, and the hardness of kiln tail coking will be higher, is more difficult to clear up instead.Therefore compared to traditional
Artificial coke cleaning method, the method for the present embodiment are safer more effective.
In one embodiment, when burning the burner of rotary kiln diesel oil amount be 30~50g/s, atomization gas flow be 12~
15m3/ h, pressure 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, will need to consume a large amount of fuel oil, if calorific value is excessively high, the temperature in rotary kiln is easy higher, it is difficult to control
System is in more stable state.
In one embodiment, inventory hourly is no more than rotary kiln design treatment amount per hour when burning
80%.Such as rotary kiln design treatment amount is 30 ton/days, then control inventory was advisable no more than 1000kg/ hours, avoided kiln tail
More coking is generated in short time and accumulates the effect for generating 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 connect with kiln hood 110.Sealing shroud 120 can be sheathed on the lateral wall of the kiln tail 210 of rotary kiln 200, and
It is abutted with the lateral wall of kiln tail 210, so that kiln hood 110 and kiln tail 210 are tightly connected, 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 layer, carbon sial composite plate layer and steel from the inside to the outside
Sole scale layer has the characteristics that high temperature resistant, corrosion-resistant and sealing are tight, can effectively avoid to leak out at kiln tail 210 and cause local drop
Temperature and coking.
In one embodiment, 120 outer surface of sealing shroud is circumferentially wound with fastener (not shown), sets in kiln hood 110
There is fixed frame (not shown), one end of fastener is connect with fixed frame, and the other end of fastener is connected with counterweight (not shown).
Make fastener banding sealing shroud 120 by counterweight, sealing shroud 120 is worn in the process of running to be still able to maintain and kiln tail
210 lateral wall abuts, and maintains sealing state, and cool ambient air is avoided to enter and coking.In the present embodiment, fastener is steel
Cord, it will be understood that it is without being limited thereto, it can be set as needed.
The method of reduction dangerous waste incinerator rotary kiln coking of the invention is burned by controlling different ash fusion points
The measures such as ratio, the process conditions of burning, the collocation of incinerated matter and the selection of kiln tail sealing structure of rotary kiln of object, significantly
Ground reduces the coking amount of rotary kiln kiln tail in the process of running, keeps the period of rotary kiln even running longer.
Embodiment 1
The second burning of the first incinerated matter aluminium slag and scruff and ash fusion point at 900 DEG C or more by ash fusion point less than 900 DEG C
Object film slag and Oil Paint Slag are burned according to the ratio mixing investment rotary kiln of mass ratio 1:10, and the first incinerated matter is burnt with second
The burning mixed calorific value of object is 3000 kilocalories/kg.The oxygen content controlled in rotary kiln when burning is 4%, and the revolving speed of rotary kiln is
0.3rpm, incineration temperature are 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 0.3MPa.After the incinerated matter that total amount is 1 ton is burned,
The coking thickness of kiln tail is 0.54cm.
Embodiment 2
The first incinerated matter plastics and ash fusion point by ash fusion point less than 900 DEG C are painted in 900 DEG C or more of the second incinerated matter
Slag is burned according to the ratio mixing investment rotary kiln of mass ratio 0.5:10, 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 when burning, and the revolving speed of rotary kiln is 0.4rpm, burns temperature
Degree is 950 DEG C, and exit gas temperature is 900~950 DEG C, furnace pressure 0Pa, and the diesel oil amount of the burner of rotary kiln is 50g/s, mist
Change throughput is 15m3/ h, pressure 0.3MPa.After the incinerated matter that total amount is 1 ton is burned, the coking thickness of kiln tail is
0.63cm。
Embodiment 3
Aluminium slag, scruff, glass and plastics are mixed according to mass ratio 1:2.5:2.5:1 and are used as the first incinerated matter, it will be industrial
Sludge, film slag, Oil Paint Slag and calcium hydroxide are used as the second incinerated matter according to mass ratio 1:1.5:1.5:4 mixing, then by first
Incinerated matter and the second incinerated matter are burned according to the ratio investment rotary kiln of mass ratio 1:10, and the first incinerated matter and second burns
The mixed calorific value of object is 3300 kilocalories/kg.The oxygen content controlled in rotary kiln when burning is 4%, and the revolving speed of rotary kiln is
0.3rpm, incineration temperature are 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 0.3MPa.After the incinerated matter that total amount is 1 ton is burned,
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 mix be used as the first incinerated matter, by industrial sludge,
Film slag, Oil Paint Slag and calcium hydroxide are used as the second incinerated matter according to mass ratio 1:1:1:1 mixing, then by the first incinerated matter and the
Two incinerated matters are burned according to the ratio investment rotary kiln of mass ratio 1:10, 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 when burning, and the revolving speed of rotary kiln is 0.3rpm, burns temperature
Degree is 1000 DEG C, and exit gas temperature is 900~950 DEG C, and 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 0.3MPa.After the incinerated matter that total amount is 1 ton is burned, the coking thickness of kiln tail
For 0.55cm.
Comparative example 1
The second incinerated matter film of the first incinerated matter aluminium slag and ash fusion point at 900 DEG C or more by ash fusion point less than 900 DEG C
Slag is burned according to the ratio mixing investment rotary kiln of mass ratio 1:2, the first incinerated matter and the mixed heat of the second incinerated matter
Value is 3000 kilocalories/kg.It is 4% that the oxygen content in rotary kiln is controlled when burning, and the revolving speed of rotary kiln is 0.3rpm, incineration temperature
It is 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 0.3MPa.After the incinerated matter that total amount is 1 ton is burned, the coking thickness of kiln tail is
5.1cm。
Comparative example 2
Incinerated matter scruff and ash fusion point by ash fusion point less than 1000 DEG C are in 1000 DEG C or more of incinerated matter coal according to 1:
10 ratio mixing investment rotary kiln is burned, and the mixed calorific value of incinerated matter is 3600 kilocalories/kg.Revolution is controlled when burning
Oxygen content in kiln is 4%, and the revolving 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 are
0.3MPa.After the incinerated matter that total amount is 1 ton is burned, the coking thickness of kiln tail is 4.35cm.
By embodiment 1-4 and comparative example 1-2 it is found that the method according to the invention, can reduce significantly rotary kiln and exist
The coking amount of kiln tail in operational process, keeps the period of rotary kiln even running longer, and can effectively cooperate with processing aluminium slag,
Scruff, glass, plastics, industrial sludge, film slag, Oil Paint Slag and calcium hydroxide these types incinerating waste material, than individually burning more
Stabilization efficiency is higher.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies 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, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of method for reducing the coking of dangerous waste incinerator rotary kiln, which comprises the following steps:
Ratio by the first incinerated matter and the second incinerated matter according to mass ratio no more than 1:10 mixes investment rotary kiln and burns；
Wherein, first incinerated matter be incinerated matter of the ash fusion point less than 900 DEG C, second incinerated matter be ash fusion point 900 DEG C with
On incinerated matter, the oxygen volume content in when burning rotary kiln is set as 4%~6%, the revolving speed of rotary kiln is 0.3~
0.4rpm, incineration temperature are 850~1000 DEG C, and exit gas temperature is 900~950 DEG C, and furnace pressure is -10~0Pa；
First incinerated matter includes aluminium slag, scruff, glass and plastics, second incinerated matter include industrial sludge, film slag,
Oil Paint Slag and calcium hydroxide, the aluminium slag, scruff, glass and plastics mass ratio be 1:2~3:2~3:0.5~1, the industry
Sludge, film slag, Oil Paint Slag and calcium hydroxide mass ratio be 1:1~2:1~2:3~5.
2. the method according to claim 1 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that also
The following steps are included: stopping feeding intake to the rotary kiln at interval of preset time period, the incineration temperature of the rotary kiln is improved
To 1200 DEG C or more, until the coking of kiln tail is melted.
3. the method according to claim 2 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that will
The incineration temperature of the rotary kiln is improved to 1200 DEG C or more of operation specifically: calorific value is added in Xiang Suoshu rotary kiln 8500
Kilocalorie/kg or more fuel oil improves incineration temperature.
4. the method according to claim 1 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that burn
The diesel oil amount of the burner of the rotary kiln is 30~50g/s when burning, and atomization gas flow is 12~15m3/ h, pressure be 0.2~
0.4MPa。
5. the method according to claim 1 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that institute
It states the first incinerated matter and the mixed calorific value of the second incinerated matter is 3000~3500 kilocalories/kg.
6. the method according to claim 1 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that burn
When burning inventory hourly be no more than the rotary kiln per hour design treatment amount 80%.
7. the method according to claim 1-6 for reducing the coking of dangerous waste incinerator rotary kiln, special
Sign is, the kiln tail sealing structure of the rotary kiln includes: kiln hood and the sealing shroud that connect with the kiln hood, the sealing
Set can be sheathed on the lateral wall of the kiln tail of the rotary kiln, and abut 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.
8. the method according to claim 7 for reducing the coking of dangerous waste incinerator rotary kiln, which is characterized in that institute
It states sealing shroud and is followed successively by 2Cr13 stainless steel layer, carbon sial composite plate layer and steel plate fish scale lamella from the inside to the outside.
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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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