CN106989401A - Incinerator apptss - Google Patents
Incinerator apptss Download PDFInfo
- Publication number
- CN106989401A CN106989401A CN201710284061.9A CN201710284061A CN106989401A CN 106989401 A CN106989401 A CN 106989401A CN 201710284061 A CN201710284061 A CN 201710284061A CN 106989401 A CN106989401 A CN 106989401A
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- Prior art keywords
- incinerator
- rotary kiln
- unit
- kiln
- waste
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- 230000009977 dual effect Effects 0.000 claims abstract description 53
- 238000010304 firing Methods 0.000 claims abstract description 53
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003546 flue gas Substances 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 42
- 239000003517 fume Substances 0.000 claims abstract description 22
- 238000005201 scrubbing Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002920 hazardous waste Substances 0.000 abstract description 49
- 239000002699 waste material Substances 0.000 description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 238000000197 pyrolysis Methods 0.000 description 13
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- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 5
- 239000010808 liquid waste Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention provides a kind of incinerator apptss, including：Incinerator unit, the gas flow that incinerator unit includes being passed through in rotary kiln and the dual firing chamber that connect with rotary kiln, rotary kiln, which is less than in preset value, dual firing chamber, to be passed through gas flow and is higher than preset value；Fume treatment unit, fume treatment unit is connected to handle the flue gas in incinerator unit with incinerator unit.Technical scheme efficiently solves hazardous waste of the prior art and decomposes the problem of not thorough, burning is insufficient.
Description
Technical field
The present invention relates to the technical field of incinerator apptss, in particular to a kind of incinerator apptss.
Background technology
Hazardous waste refers to be included in《National Hazard waste register》Or according to the hazardous waste judging standard of national regulation
The waste with hazard property assert with discrimination method.Hazardous waste divides 47 major classes kind more than totally 600, and species is more, complicated component,
With toxicity, corrosivity, inflammable and explosive property, chemical reactivity, infectiousness, radioactivity etc., it, which pollutes, has potentiality and delayed
Property, it is one of emphasis and difficulties of global environmental protection.
, should be according to its classification, composition composition and its physics, chemistry etc. in processing because hazardous waste has above-mentioned characteristic
Characteristic, carries out different disposal.The processing method of disposal in the world to hazardous waste has at present：Burning, landfill, resource reclaim
(reuse), safe storage, physical chemistry processing etc..
Burn as a kind of processing method of disposal, it is adaptable to those can not recycle, recycle or security landfill waste.
Incineration temperature is very high, is a kind of thermal oxidation process, wherein hazardous waste and oxygen reaction in air, generates gas and is difficult to fire again
The solid residue of burning.Produced gas needs to discharge after purifying, and solid residue must carry out security landfill disposal.Hazardous waste passes through
After burning disposal, most organic is transformed into inorganic matter, and Waste volume reduces 85%~90%.Greatly reduce and finally fill out
The amount of burying and expense, eliminate or mitigate toxicity and infectiousness of waste etc..Having after burning disposal makes waste reach stabilisation, safety
Change, the advantage of minimizing.
At present, the domestic burning disposal to hazardous waste uses rotary kiln incinerator, liquid injection formula incinerator, fluid bed
The type of furnaces such as incinerator, fixed bed incinerator, multilayer incinerator and cement kiln, these incineration technologies are using downflow type (i.e. cigarette
Air-flow is consistent to the flow direction with waste in incinerator) peroxide burning.In actual motion, it is immature to there is handling process,
Complete and fault rate is not high for coordinative composition of equipments, and Absorption of Imported Techniques and equipment are not in place, the problems such as operating lack of standardization, shows as burning temperature
Degree is low, and hazardous waste is unable to complete sterilizing, decomposes and detoxify, and fume emission is not up to standard, and severe operational environment causes new dirt
Dye, while auxiliary fuel consumption is big.
Burning of the burning of hazardous waste than general house refuse requires tightened up.Incinerator is the core of whole incineration technology
Center portion point, it decides the processing task of hommization operation, innoxious degree and the follow-up tail gas in dangerous waste incineration workshop.Danger
The factors affect such as oxygen content of the dangerous waste in residence time, the pyrolysis of the rotary kiln degree of hazardous waste processing.
The content of the invention
It is a primary object of the present invention to provide a kind of incinerator apptss, decomposed with solving hazardous waste of the prior art
Not thoroughly, burn it is insufficient the problem of.
To achieve these goals, it is of the invention to provide a kind of incinerator apptss, including：Incinerator unit, incinerator
The gas flow that unit includes being passed through in rotary kiln and the dual firing chamber connected with rotary kiln, rotary kiln is less than in preset value, dual firing chamber
Gas flow is passed through higher than preset value；Fume treatment unit, fume treatment unit is connected to handle incinerator with incinerator unit
Flue gas in unit.
Further, rotary kiln also includes shell and liner, and the internal diameter of the center section of liner is more than the two ends of liner
Internal diameter.
Further, interior lining is provided with the flight structure for the inner surface for protruding from liner.
Further, rotary kiln includes rotary kiln main body, kiln head cover and the kiln hood being connected with each other, kiln head cover and rotary kiln
Having between main body has the second sealing device between first sealing device and/or kiln hood and rotary kiln main body.
Further, incinerator unit also includes feeding device, and feeding device is arranged on the first end of rotary kiln, charging dress
It is set on dustpan shape structure, feeding device and is provided with water-cooling structure.
Further, incinerator unit also includes deslagging device, and deslagging device is arranged on the second end of rotary kiln, dress of slagging tap
Put including sealing structure for water.
Further, fume treatment unit includes flash cold column and scrubbing tower, and scrubbing tower is connected with incinerator unit, is quenched
Tower is arranged between scrubbing tower and incinerator unit.
Further, fume treatment unit also includes heat exchange structure, and heat exchange structure is arranged on flash cold column and incinerator unit
Between, the gas for being passed through rotary kiln and dual firing chamber is exchanged heat by heat exchange structure.
Further, fume treatment unit also includes extracting tower, and extracting tower is arranged between flash cold column and scrubbing tower, depickling
Tower also includes extracting tower main body, activated carbon warehouse and pulverized limestone warehouse, activated carbon warehouse and pulverized limestone warehouse and extracting tower main body
It is connected.
Further, fume treatment unit also includes dust arrester, and dust arrester is arranged between extracting tower and scrubbing tower.
Apply the technical scheme of the present invention, when hazardous waste burns, hazardous waste is initially entered in rotary kiln, due to returning
The gas flow that is passed through in rotary kiln is not enough, so that hazardous waste can not fully burn, and hazardous waste can be with such a case
It is decomposed into combustible.Hazardous waste after decomposition enters dual firing chamber, due in dual firing chamber there is sufficient oxygen can make danger
The analyte burning of waste, said structure causes hazardous waste is decomposed more thorough, and the hazardous waste burning after decomposition is more
Fully.Technical scheme efficiently solve hazardous waste of the prior art decompose not thoroughly, burn it is insufficient
Problem.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the connection diagram of the embodiment of the incinerator apptss according to the present invention；And
Fig. 2 shows the structural representation of the incinerator of Fig. 1 incinerator apptss.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, incinerator unit；11st, rotary kiln；111st, rotary kiln main body；112nd, kiln head cover；113rd, kiln hood；12nd, two combustion
Room；13rd, deslagging device；14th, feeding device；20th, fume treatment unit；21st, flash cold column；22nd, scrubbing tower；23rd, heat exchange structure；
24th, extracting tower；241st, extracting tower main body；242nd, activated carbon warehouse；243rd, pulverized limestone warehouse；25th, dust arrester.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, the incinerator apptss of the present embodiment include：Incinerator unit 10 and fume treatment unit 20.Burn
Stove unit 10 includes the gas flow being passed through in rotary kiln 11 and the dual firing chamber 12 connected with rotary kiln 11, rotary kiln 11 less than default
Gas flow is passed through in value, dual firing chamber 12 higher than preset value.Fume treatment unit 20 is connected with incinerator unit 10 is burnt with handling
Burn the flue gas in stove unit 10.
Using the technical scheme of the present embodiment, when hazardous waste burns, hazardous waste is initially entered in rotary kiln 11, by
It is not enough in the gas flow being passed through in rotary kiln 11, so that hazardous waste can not fully burn, it is dangerous useless in such a case
Thing can be decomposed into combustible.Hazardous waste after decomposition enters dual firing chamber 12, due to having sufficient oxygen in dual firing chamber 12
The analyte of hazardous waste can be made to burn, said structure causes hazardous waste is decomposed more thorough, the danger after decomposition is given up
Thing burning is more abundant.The technical scheme of the present embodiment efficiently solve hazardous waste of the prior art decompose not thoroughly,
The problem of burning insufficient.
It should be noted that the preset value of gas is：It will enter required for the burning completely of the combustible in incinerator unit
Air capacity theoretical value, be passed through that air capacity in rotary kiln 11 is theoretical air requirement in the present embodiment 85%, into two
Fire room 12 in air capacity for theoretical air requirement 150% to 180% between.Temperature in the present embodiment it should also be appreciated that：Revolution
Temperature control in kiln 11 goes out the control of the flue-gas temperature of rotary kiln 11 between 650 DEG C to 750 DEG C between 600 DEG C to 900 DEG C,
So it is more beneficial for high-molecular-weight organic material being degraded into the organic compound of low molecule amount.The above-mentioned air capacity that is passed through passes through DCS
Control system is that can be achieved.The exit gas temperature of dual firing chamber 12 is 850 DEG C to 1100 DEG C, so on the one hand be efficiently avoid
On the other hand pyrolyzing hazardous wastes have been obtained part fuel gas by bioxin formation condition, are conducive to saving fuel.
As shown in Fig. 2 in the technical scheme of the present embodiment, rotary kiln 11 also includes shell and liner, the centre of liner
Partial internal diameter is more than the internal diameter at the two ends of liner.Said structure can extend time of the hazardous waste in rotary kiln 11, this
Sample make it that the decomposition of hazardous waste is more thorough.
The (not shown) in the technical scheme of the present embodiment, interior lining is provided with copying for the inner surface that protrudes from liner
Hardened structure.The setting of flight structure make it that the stirring of hazardous waste is more uniform.Rotary kiln 11 is when rotating, and flight structure drives
Hazardous waste is moved upwards, and said structure can sufficiently stir hazardous waste, and such flight structure causes hazardous waste more to fill
The decomposition divided.Specifically, flight structure sets a flight on the axis of rotary kiln 11 every 0.5 meter to 1 meter, in circumferential side
A upward circumference sets 3 flights to set a flight every 120 degree.Said structure ensure that hazardous waste can be abundant
Stirred, be heated.
In the technical scheme of the present embodiment, rotary kiln 11 includes rotary kiln main body 111, the kiln head cover 112 being connected with each other
With kiln hood 113, there is first sealing device and kiln hood 113 and revolution kiln owner between kiln head cover 112 and rotary kiln main body 111
There is the second sealing device between body 111.On the one hand said structure ensure that between rotary kiln main body 111 and kiln head cover 112
Sealing effectiveness, on the other hand ensure that the sealing effectiveness between rotary kiln main body 111 and kiln hood 113.Specifically, the first sealing
Device is that steel disc is set into fish scale-like, and the second sealing device is that steel disc is also configured as into fish scale-like.
Certainly, as one skilled in the art will appreciate that being set only between rotary kiln main body 111 and kiln head cover 112 first close
Seal apparatus, or only set the second sealing device also possible between rotary kiln main body 111 and kiln hood 113.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, incinerator unit 10 also includes feeding device 14, plus
Material device 14 is arranged on the first end of rotary kiln 11, and feeding device 14 is to be provided with water cooling on dustpan shape structure, feeding device 14
Structure.Feeding device 14 is that dustpan shape structure causes dangerous waste material to be not easy to spill from the side of feeding device 14, said structure
Dangerous waste material dew can be prevented to the outside of rotary kiln main body 111.Water-cooling structure is provided with feeding device 14 causes charging to fill
Put to scald excessively, and boiling hot feeding device, which easily melts dangerous waste material, excessively causes material to be filled into rotary kiln 11 is interior
The burning divided.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, incinerator unit 10 also includes deslagging device 13, goes out
Slag device 13 is arranged on the second end of rotary kiln 11, and deslagging device 13 includes sealing structure for water.Waste residue in rotary kiln 11 is by going out
Slag device 13 is directly entered sealing structure for water, so waste residue and air reaction can be avoided to cause air pollution.
As shown in figure 1, in the technical scheme of the present embodiment, fume treatment unit 20 includes flash cold column 21 and scrubbing tower
22, scrubbing tower 22 is connected with incinerator unit 10, and flash cold column 21 is arranged between scrubbing tower 22 and incinerator unit 10.Quenching
The top of tower 21 sprays liquid, and flue gas is in flash cold column 21, temperature is instantaneously reduced to 175 ± 5 DEG C from 550 DEG C or so, it is to avoid two
The regeneration (reverse generation) of Evil English.
As shown in figure 1, in the technical scheme of the present embodiment, fume treatment unit 20 also includes heat exchange structure 23, heat exchange
Structure 23 is arranged between flash cold column 21 and incinerator unit 10, is passed through the gas of rotary kiln 11 and dual firing chamber 12 by changing
Heat structure 23 exchanges heat.The waste heat for the flue gas that said structure makes full use of, is so conducive to saving the energy.
As shown in figure 1, in the technical scheme of the present embodiment, fume treatment unit 20 also includes extracting tower 24, extracting tower
24 are arranged between flash cold column 21 and scrubbing tower 22, and extracting tower 24 also includes extracting tower main body 241, activated carbon warehouse 242 and stone
Ashes warehouse 243, activated carbon warehouse 242 and pulverized limestone warehouse 243 are connected with extracting tower main body 241.Said structure is by flue gas
In pernicious gas absorption or with pernicious gas reaction, be directly discharged to pollute empty in air this avoid pernicious gas
Gas.
As shown in figure 1, in the technical scheme of the present embodiment, fume treatment unit 20 also includes dust arrester 25, dedusting
Device 25 is arranged between extracting tower 24 and scrubbing tower 22.When flue gas is by dust arrester 25, dust arrester 25 is by flue gas
Dust remove, the dust in such flue gas will not enter air, and said structure protect environment.
As shown in figure 1, the exhaust gases passes of dual firing chamber 12 are connected with the smoke air inlet of heat exchange structure 23, such dual firing chamber
Flue gas in 12 passes through from heat exchange structure 23, and the exhanst gas outlet of heat exchange structure 23 is connected with the gas approach of flash cold column 21.
Into the gas in rotary kiln 11 and the gas entered in dual firing chamber 12 by heat exchange structure 23, gas with after flue gas heat exchange
Temperature is raised, and said structure takes full advantage of the temperature of flue gas, is so conducive to saving the energy.Certainly, as art technology
Personnel know, can not also be exchanged heat into the gas in rotary kiln 11 and dual firing chamber 12 by heat exchange structure 23.Temperature compared with
High flue gas again in flash cold column 21 temperature reduction suddenly thus effectively avoids the generation of the pollutant of dioxin in flue gas.From
Flue gas in flash cold column 21 out enters extracting tower 24, and extracting tower 24 removes the sour gas in flue gas.From extracting tower 24
Flue gas out enters dust arrester 25, and dust arrester 25 removes the dust in flue gas.The gas come out from dust arrester 25
Into scrubbing tower 22, scrubbing tower 22 further removes the harmful substance in flue gas, and finally flue gas is discharged into air.When
So, as one skilled in the art will appreciate that setting air inducing equipment (centrifugal induced draught fan) between dust arrester 25 and scrubbing tower 22.
Reverse-flow (anoxic) the pyrolysis rotary kiln incineration technology of hazardous waste is easier to using rotary kiln 11 and dual firing chamber 12
The characteristics of Discrete control reaction atmosphere, reaction atmosphere, course of reaction and the extent of reaction of the Discrete control waste in rotary kiln, with
Reach gasify first in kiln hood part, pyrolysis section organic matter as the fuel of subsequent reactor, and reduce bioxin predecessor
Generation, the middle part and rear portion of rotary kiln again thoroughly decompose waste in organic substance and harmful components purpose, it be collection
Pyrolysis is with burning disposal in the new incineration treatment technology of one.Its general principle is：(1) oxygen of the hazardous waste in rotary kiln
It is heated, dry in the state of unsaturated vapor, ignite, thermal cracking is fuel gas and is conducted into the second combustion chamber (dual firing chamber).
(2) the derived fuel gas of institute dual firing chamber through air Forced Mixing, ignite, the high-temperature oxydation under sufficient air supply.Profit
Burned with high temperature pyrolysis, it is favourable to exhaust emissions.The detected value of the " bioxin of the technical scheme discharge of the present embodiment " is very low,
Especially contain the waste of PVC (polyvinyl chloride) material to medical waste etc..Reason is：(a) pyrolytic technique is used, by macromolecular
Organic matter is pyrolyzed or is vaporized into first small molecule organic material, reduces the predecessor of bioxin.(b) dual firing chamber's peroxide, high temperature point
Solution, and ensure to stop more than 2 seconds at 1100 DEG C, it is ensured that harmful organic substance is thoroughly decomposed in flue gas.
The technical scheme of the present embodiment, in incinerator unit, dangerous waste incineration moving direction and flow of flue gas direction
On the contrary, when hazardous waste is in rotary kiln 11, hazardous waste is contacted under anaerobic condition with high-temperature flue gas, debirs can be promoted
Micro-molecular gas is pyrolyzed into, the generation of bioxin predecessor is so reduced.Said structure reduces and controlled " bis- Evil from source
The discharge of English ".Still contain part Organic Hazardous Compounds in the flue gas for entering dual firing chamber 12 from rotary kiln 11, these pernicious gases are long
Time be in high temperature, peroxide under the conditions of burn, 850 DEG C~1100 DEG C of ignition temperature, the residence time more than 2 seconds, thus by
The harmful substance of generation is thoroughly decomposed, and so further reduces the generation of harmful substance.Using gas-liquid two-phase flow misting cooling
Device, instantaneously 175 ± 5 DEG C are reduced to by flue-gas temperature from 550 DEG C, it is to avoid the regeneration (reverse generation) of bioxin.Using dry
HCL and simple substance chlorine and other sour gas in method and wet method depickling, abjection flue gas, and removed using charcoal absorption and cloth bag
Dirt, prevents HCL and simple substance chlorine from generating bioxin with hydrocarbon reaction under flying dust catalytic action.
The content of dioxin in flue gas is less than 0.1TEQ ng/m after processing3, much smaller than discharging standards 0.5TEQ
ng/m3。
Waste is under anaerobic pyrolysis state in high temperature section in rotary kiln, generating portion fuel gas, into dual firing chamber 12,
The fuel consumption of dual firing chamber 12 is reduced, under normal operating, dual firing chamber 12, which need not supplement additional fuel, can keep 850 DEG C
Temperature, up to more than 2 seconds.Waste burnt in the case where burning zone and burning segment are in oxygen condition, advantageously reduced the heat of incineration residue
Burn decrement rate, clinker ignition loss is less than 3%.Extend the life-span of rotary kiln refractory material, solve liquid waste to the low of refractory material
Temperature corrosion.
Hazardous waste is pushed into rotary kiln 11, and what is contacted first is high-temperature flue gas, and liquid wastes are in instant vaporization, it is to avoid
Liquid waste contact with refractory material the low-temperature corrosion caused for a long time in rotary kiln 11, is conducive to the longevity of raising refractory brick
Life.
The first start-up burner, deslagging device 13, exhanst gas outlet, the feeding device of auxiliary are disposed with rotary kiln 11
14th, the first observation panel, primary air nozzle and its control system, rotary kiln main body 111 and transmission mechanism.In rotary kiln main body 111
Primary air nozzle and its control system that kiln tail is installed additional, and the air quantity fed is controlled.Kiln hood end exhanst gas outlet in
Between flue be connected with dual firing chamber 12.
The head of rotary kiln 11 is slightly higher, and the afterbody of rotary kiln 11 is lower slightly, obliquely.The two ends of rotary kiln main body 111 point
Not Lian Jie kiln head cover 112 and kiln hood 113, the bottom UNICOM deslagging device 13 of kiln hood 113, kiln tail part is slag output end.Kiln
The first start-up burner of insertion, observation panel, First air entrance and its control system in hood 113.It is provided with kiln head cover 112
Feeding device 14.Kiln head cover 112 is provided with exhanst gas outlet, and the exhanst gas outlet connects dual firing chamber 12 by intermediate flue, hazardous waste
Flow direction is opposite with the flow direction of flue gas.First start-up burner can according in rotary kiln 11 set temperature automatic start and stopping,
Theoretical air capacity can be calculated according to inlet amount into the primary air flow in kiln and is automatically adjusted.
The inlet end of dual firing chamber 12 is inserted with the second start-up burner, Secondary Air entrance and its control system, second of auxiliary
Observation panel, the inside of dual firing chamber 12 is provided with barricade, and the other end sets air exit.
In the technical scheme of the present embodiment, first sealing device between rotary kiln two ends and kiln head cover and kiln hood and
Second sealing device is steel pressing plate labyrinth-type excluder.
The shell of the rotary kiln 11 of the present embodiment is steel cylinders, and the liner of rotary kiln 11 is high alumina refractories, interior
The head of lining and the afterbody internal diameter of liner are smaller than the center section internal diameter of liner.So dangerous waste material is fully decomposed.
The transmission mechanism of the rotary kiln of the present embodiment is gear drive, certainly, as one skilled in the art will appreciate that
The drive mechanism of rotary kiln is that chain type transmission mechanism is also possible.
In the technical scheme of the present embodiment, feeding device 14 includes feed chute, and feed chute is steel water-cooling sliding chute
And external application refractory material.Said structure ensure that dangerous waste material will not stick to feed chute because of the temperature height of feed chute
On.
In the technical scheme of the present embodiment, dual firing chamber 12 is provided with explosion-protection equipment and emergent blowdown stack and its control system
System.Temperature measurement and control instrument and pressure monitoring and controlling device are provided with dual firing chamber 12.In order to ensure the gas flow entered in dual firing chamber 12,
Secondary Air entrance and its control system, the automatic start and arresting stop of the second start-up burner.
In the technical scheme of the present embodiment, dual firing chamber 12 is steel shell.Liner is high alumina refractories, is shaped as
It is circular.Certainly, as one skilled in the art will appreciate that liner is all possible to be square, vertical or horizontal.
The incinerator unit essence of the present embodiment is a pyrolysis process, by rotary kiln 11 (a combustion room)
Hazardous waste carries out automatically controlling for anoxic burning, and reaching combustible component contained by waste, all release and part are burnt, and make danger
Waste in the case where air quantity delivered is less than theoretical value by drying, heating, partly burn, be pyrolyzed, burn.Due to using adverse current
Operation, hazardous waste, which enters, directly contacts high temperature pyrolysis gas in kiln, obtain fast dewatering cracking burning.Waste is reverse with flue gas
Flowing, is conducive to it to dry, catch fire, burn, burn, and hazardous waste makes it in revolution in interior fully stirred of rotary kiln 11
There are enough residence times in kiln, it is ensured that discharge clinker is obtained burns effect enough.
Waste in one combustion chamber is heated, dry under oxygen-deficient state, ignite, thermal cracking be fuel gas simultaneously
It is conducted into two combustion chambers.The derived fuel gas of institute dual firing chamber through air Forced Mixing, ignite, in sufficient air supply
Lower high-temperature oxydation.Burned using high temperature pyrolysis, it is favourable to exhaust emissions.Found through experiment, the cigarette of the technical scheme of the present embodiment
After testing, the detected value of its " bioxin " is very low for gas, especially to medical waste, due to PVC (polyvinyl chloride) occupy ratio compared with
Height, burns these articles and easily produces " bioxin ", but use the " bioxin of its flue gas of the technical scheme of the present embodiment " detection
Value is still very low.Its reason is to be pyrolyzed or be vaporized into first small molecule organic material by the organic matter of macromolecular, so as to reduce
The predecessor of bioxin generation, and desorbed in dual firing chamber, decomposed.
Hazardous waste is pushed into rotary kiln 11 by feeding device 14, under the rotary motion of rotary kiln 11, and waste is to revolution
The caudal directions of kiln 11 slowly overturn movement, through drying, pyrolysis, the process burnt before height temperate zone, after height temperate zone
Burn away and complete the overall process burnt, residence time of the hazardous waste in rotary kiln 11 be 2.5 to 3.5 hours between,
Ensure that clinker ignition loss is not more than 3%.Kiln tail is provided with deslagging device 13, using automatic discharge equipment, passes through water cooled seal mucking machine
Exclude bottom ash.
First air is sent into from kiln tail, by self-checking device by Boiler pressure control in about the 85% of theoretical air requirement, feeding
First air in rotary kiln 11 is contacted instead with the burning segment waste in rotary kiln 11, burning zone waste, dryer section waste successively
Should, to ensure burning segment oxygen-enriched combusting, burning zone burns substantially, and dryer section is in anaerobic condition.Due to the rotation of rotary kiln 11
Air in stirring action, feeding rotary kiln 11 is fully contacted with burning segment waste first, combustion reaction, harmful components in waste
Thoroughly decomposed, destroyed.The gas that remaining First air and burning segment are produced continues to contact with burning zone waste, burnt instead
Should, and further improve the temperature of rotary kiln 11.Now, in rotary kiln 11 close to dryer section gas (including First air, after-flame
Section and burning zone produce flue gas) in oxygen content be insufficient to allow newly enter rotary kiln 11 the complete combustion reaction of waste, in lack
Oxygen condition, and it is higher closer to temperature of kiln head, it is sufficient to the new waste into rotary kiln 11 is dehydrated within a short period of time,
Pyrolytic gasification.
The air capacity sent into rotary kiln 11 is the 85% of theoretical air requirement, and the flue gas for going out rotary kiln 11 enters dual firing chamber
12, it is pyrolyzed Secondary Air of the obtained combustible in dual firing chamber 12 with entering and meets and further burn.Secondary air flow is theoretical wind
The 150% to 180% of amount.Secondary air flow, dual firing chamber's exiting flue gas temperature are automatically adjusted by outlet oxygen content 6~10% (dry flue gas)
Spend for 850 DEG C~1100 DEG C, the residence time is more than 2 seconds, it is ensured that the remaining harmful substance in flue gas is thoroughly decomposed.
Automatic control system is according to temperature in rotary kiln 11 and the exiting flue gas oxygen content feedback regulation blower fan of dual firing chamber 12
The reasonable distribution of wind supply quantity and two parts air quantity so that hazardous waste can keep good combustion efficiency, while reducing winged
The yield of the pollutants such as ash.
Due to the diversity of hazardous waste, the waste heating value into rotary kiln 11 has fluctuation.In order to maintain the He of rotary kiln 11
The need for the temperature of dual firing chamber 12, and satisfaction igniting startup, auxiliary fuel system is set.12 points of rotary kiln 11 and dual firing chamber
Not She You auxiliary burner (i.e. the first start-up burner and the second start-up burner), furnace temperature is relatively low or during relatively low waste heating value
Ensure that burning is normally carried out.Auxiliary burner is stage running, when temperature reaches setting value in rotary kiln 11 and dual firing chamber 12
It is automatically stopped or according to temperature automatic adjustment amount of fuel in rotary kiln 11 and dual firing chamber 12, to reach the purpose for saving energy consumption.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：.
First, the discharge of harmful substance is reduced.Dangerous waste incineration moving direction is in opposite direction with flow of flue gas, makes entrance
Waste in rotary kiln 11 is contacted under anaerobic condition with high-temperature flue gas, can promote the pyrolysis of waste, reduction dioxin formation
Predecessor, reduces the formation of dioxin, and the discharge of " dioxin " is reduced from source.
2nd, reduction production and operation cost and clinker ignition loss.Using anaerobic pyrolysis incineration technology, by partial organic substances in waste
It is pyrolyzed into fuel gas and enters dual firing chamber, is conducive to improving the flue-gas temperature of dual firing chamber, reduces the fuel consumption of dual firing chamber, have
Beneficial to reduction production and operation expense；Waste burnt in the case where burning zone and burning segment are in oxygen condition simultaneously, advantageously reduces and burns
Burn the clinker ignition loss of residue.
3rd, strong adaptability.Rotary kiln is worked continuously, fed, deslagging realizes mechanization, while to waste species, waste
The strong adaptability such as reason amount and waste form, especially adapts to waste composition, calorific value and metamorphosis big.
4th, refractory brick life is long, cuts operating costs.Enter kiln waste to contact with high-temperature flue gas, liquid wastes are in moment vapour
Change, be conducive to improving the life-span of refractory brick.Low-temperature corrosion of the rotary kiln because of liquid waste to refractory material is solved, rotary kiln is resistance to
The life-span of fiery material more than 2 to 3 years, improves than the domestic similar dangerous waste incineration plant downflow type rotary kiln life-span of 1 to 1.5 year
More than 50%.
5th, the auxiliary fuel consumption about more than 50% of dual firing chamber is reduced.As it can be seen from table 1 in dual firing chamber's heat income,
The heat of pyrolysis gas burning release accounts for the 47.73% of whole heat income, and the heat income of auxiliary fuel only accounts for whole heat income
10.6%.The auxiliary fuel consumption of following current design is 0# light diesel fuels：Rotary kiln 50kg/h, dual firing chamber 60kg/h, are used
After the technology of the present embodiment, auxiliary fuel consumption is 0# light diesel fuels：Rotary kiln and dual firing chamber amount to 51kg/h, reduce 53.6%
The rotary kiln of table 1, dual firing chamber's heat Balance Calculation
6th, clean, dirty subregion in closed, environmentally friendly closed pusher no leakage, non-material leakage, factory building.
7th, safety operation can be prevented effectively because of the deflagration phenomenon that waste heating value is uneven and produces.
8th, automaticity high technology auto-control degree is high, realizes computer controlled automatic, improves work
Productivity ratio.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of incinerator apptss, it is characterised in that including：
Incinerator unit (10), the incinerator unit (10) includes rotary kiln (11) and connected with the rotary kiln (11) two
Fire room (12), the gas flow being passed through in the rotary kiln (11), which is less than in preset value, the dual firing chamber (12), is passed through gas flow height
In the preset value；
Fume treatment unit (20), the fume treatment unit (20) is connected described to handle with the incinerator unit (10)
Flue gas in incinerator unit (10).
2. incinerator apptss according to claim 1, it is characterised in that the rotary kiln (11) also includes shell and interior
Lining, the internal diameter of the center section of the liner is more than the internal diameter at the two ends of the liner.
3. incinerator apptss according to claim 2, it is characterised in that the interior lining, which is provided with, protrudes from the liner
Inner surface flight structure.
4. incinerator apptss according to claim 1, it is characterised in that the rotary kiln (11) includes time being connected with each other
Rotary kiln main body (111), kiln head cover (112) and kiln hood (113), the kiln head cover (112) and the rotary kiln main body (111) it
Between have between first sealing device and/or the kiln hood (113) and the rotary kiln main body (111) have second sealing fill
Put.
5. incinerator apptss according to claim 1, it is characterised in that the incinerator unit (10) also includes charging dress
Put (14), the feeding device (14) is arranged on the first end of the rotary kiln (11), the feeding device (14) is dustpan shape
Water-cooling structure is provided with structure, the feeding device (14).
6. incinerator apptss according to claim 1, it is characterised in that the incinerator unit (10) also includes dress of slagging tap
Put (13), the deslagging device (13) is arranged on the second end of the rotary kiln (11), the deslagging device (13) includes water seal
Structure.
7. incinerator apptss according to claim 1, it is characterised in that the fume treatment unit (20) includes flash cold column
(21) and scrubbing tower (22), the scrubbing tower (22) is connected with the incinerator unit (10), and the flash cold column (21) is set
Between the scrubbing tower (22) and the incinerator unit (10).
8. incinerator apptss according to claim 7, it is characterised in that the fume treatment unit (20) also includes heat exchange
Structure (23), the heat exchange structure (23) is arranged between the flash cold column (21) and the incinerator unit (10), is passed through institute
The gas for stating rotary kiln (11) and the dual firing chamber (12) is exchanged heat by the heat exchange structure (23).
9. incinerator apptss according to claim 7, it is characterised in that the fume treatment unit (20) also includes depickling
Tower (24), the extracting tower (24) is arranged between the flash cold column (21) and the scrubbing tower (22), the extracting tower (24)
Also include extracting tower main body (241), activated carbon warehouse (242) and pulverized limestone warehouse (243), the activated carbon warehouse (242) and
The pulverized limestone warehouse (243) is connected with the extracting tower main body (241).
10. incinerator apptss according to claim 9, it is characterised in that the fume treatment unit (20) also includes removing
Dirt device (25), the dust arrester (25) is arranged between the extracting tower (24) and the scrubbing tower (22).
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| CN201710284061.9A CN106989401A (en) | 2017-04-26 | 2017-04-26 | Incinerator apptss |
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| CN201710284061.9A CN106989401A (en) | 2017-04-26 | 2017-04-26 | Incinerator apptss |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108194926A (en) * | 2018-02-09 | 2018-06-22 | 光大环保技术研究院（南京）有限公司 | A kind of dangerous waste incineration processing method and its system |
| CN110030560A (en) * | 2019-04-18 | 2019-07-19 | 中国恩菲工程技术有限公司 | A kind of processing method of hazardous waste |
| CN110486731A (en) * | 2019-09-12 | 2019-11-22 | 山东欧卡环保工程有限公司 | Solid and liquid dangerous waste plasma cracking and vitrifying processing equipment and method |
| CN115872464A (en) * | 2021-09-29 | 2023-03-31 | 中国石化工程建设有限公司 | Solid slag recycling method and device |
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| CN110486731A (en) * | 2019-09-12 | 2019-11-22 | 山东欧卡环保工程有限公司 | Solid and liquid dangerous waste plasma cracking and vitrifying processing equipment and method |
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| CN115872464B (en) * | 2021-09-29 | 2024-08-20 | 中国石化工程建设有限公司 | Method and device for recycling solid slag |
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