CN109959016A - A kind of processing system of hazardous waste - Google Patents
A kind of processing system of hazardous waste Download PDFInfo
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- CN109959016A CN109959016A CN201910312968.0A CN201910312968A CN109959016A CN 109959016 A CN109959016 A CN 109959016A CN 201910312968 A CN201910312968 A CN 201910312968A CN 109959016 A CN109959016 A CN 109959016A
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- unit
- kiln
- burning
- hazardous waste
- waste
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- 239000002920 hazardous waste Substances 0.000 title claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 13
- 239000000155 melt Substances 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 238000005201 scrubbing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 14
- 239000010882 bottom ash Substances 0.000 description 13
- 239000002699 waste material Substances 0.000 description 13
- 239000000428 dust Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 239000011521 glass Substances 0.000 description 9
- 230000009977 dual effect Effects 0.000 description 8
- 238000010304 firing Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 239000002956 ash Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002906 medical waste Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- -1 first burns unit Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 231100000783 metal toxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010914 pesticide waste Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000010010 raising Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- 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
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- 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
-
- 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
- F23G5/46—Recuperation of heat
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- 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
-
- 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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/101—Baghouse type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of processing systems of hazardous waste, unit, melt element, the second burning unit and gas cleaning unit are burned including first, wherein, the second burning unit is connected with the first burning unit, and the gas cleaning unit is connected with the second burning unit.The processing system of the hazardous waste of an embodiment of the present invention can not only make the flue gas of discharge up to standard, and can be realized the resource utilization of hazardous waste.
Description
Technical field
The present invention relates to a kind of processing system of hazardous waste, specially a kind of achievable hazardous waste harmless treatment and
The processing equipment of resource utilization.
Background technique
With the continuous propulsion of China's process of industrialization, the hazardous waste quantity generated in industrial processes increases year by year
Add, ecological environment and health of the masses are caused and seriously threatened.China's hazardous waste is many kinds of, complicated component, disposes and controls
Manage that at high cost, processing capacity is limited, handled by hazardous waste, it is mishandling cause environmental pollution and risk accidents to take place frequently, danger
Waste pollution prevention and control situation is severe.
Currently, burning is the mainstream technology of dangerous waste disposal.Existing burning disposal equipment, it is easily raw during processing
At dioxin predecessor, cause the dioxins concentration in the flue gas of discharge exceeded.And it is still fallen within by burning the lime-ash generated
Hazardous waste generally requires and carries out chelating solidification landfill disposal, can generate potential threat to the environment on landfill yard periphery；Meanwhile
The lime-ash heavy metal toxicity that dangerous waste incineration generates is exceeded, clinker ignition loss is low.
Summary of the invention
A primary object of the present invention is providing a kind of processing system of hazardous waste, including first burns unit, melts
Melt unit, the second burning unit and gas cleaning unit, wherein described second, which burns unit and described first, burns unit phase
Even, the gas cleaning unit is connected with the second burning unit.
According to an embodiment of the present invention, the first burning unit includes counterflow rotary kiln, the counterflow rotary kiln
Feedstock direction is contrary with flue gas emission.
According to an embodiment of the present invention, the first burning unit includes rotary kiln and feeding device, the rotary kiln
Including kiln body, the kiln body includes the kiln hood and kiln tail positioned at both ends, and the kiln hood is provided with kiln head cover, the kiln head cover packet
Mouth and slag notch are included, the outlet flue is connected with the second burning unit；The feeding device passes through the kiln head cover
It is set to the kiln hood, the feeding device includes feed opening, and the feed opening is slagged tap adjacent to the outlet flue, far from described
Mouthful.
According to an embodiment of the present invention, the melt element includes electric furnace, the electric furnace be selected from ore-smelting electric furnace or wait from
Daughter electric furnace.
According to an embodiment of the present invention, the melt element includes coring furnace and crystallization furnace.
According to an embodiment of the present invention, the melt element includes centrifuge, cotton collecting machine and pleating machine.
According to an embodiment of the present invention, the melt element includes water quenching slag bath and ball mill.
According to an embodiment of the present invention, the gas cleaning unit include heat-exchanger rig, cooling device, deacidifying device,
One of dust-extraction unit, wash mill are a variety of.
According to an embodiment of the present invention, the gas cleaning unit include waste heat boiler, flash cold column, dry type extracting tower,
Bag filter and single-stage or multistage scrubbing tower.
According to an embodiment of the present invention, the system comprises pretreatment units and fused raw material supply unit, described pre-
Processing unit is used for the pretreatment of the hazardous waste, and the fused raw material supply unit is used to for fused raw material being delivered to described
Melt element.
The processing system of the hazardous waste of an embodiment of the present invention can not only make the flue gas of discharge up to standard, and can
Realize the resource utilization of hazardous waste.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the processing system of the hazardous waste of an embodiment of the present invention.
Specific embodiment
The exemplary embodiment for embodying feature of present invention and advantage will describe in detail in the following description.It should be understood that
The present invention can have various variations in different embodiments, neither depart from the scope of the present invention, and theory therein
Bright and diagram inherently is illustrated as being used, rather than to limit the present invention.
An embodiment of the present invention provides a kind of processing system of hazardous waste, including first burns unit, melting list
Member, second burn unit and gas cleaning unit；Wherein, the second burning unit burns unit, gas cleaning with first respectively
Unit is connected.
In an embodiment, hazardous waste includes the waste that can be burned in addition to explosive and have radioactivity, can
Think one of solid-state, semisolid, liquid hazardous waste or a variety of.
In an embodiment, hazardous waste can be the higher organic pollutant of calorific value.
In an embodiment, hazardous waste can be medical waste, rectification residue, organic resin class waste, You Jirong
Agent, halogenated material waste (HW45), coating waste (HW12), surface treatment waste (HW17), emulsion (HW09), waste containing phenol
(HW39), clinical waste (HW01), asbestos (HW36), organic cyanide waste (HW38), dead catalyst (HW50), distillation
One of residue (HW11), waste mineral oil (HW08), pesticide waste (HW04) and spent acid (HW34) are a variety of.
The processing system of the hazardous waste of an embodiment of the present invention burns hazardous waste by the first burning unit
Burning processing, obtains bottom ash and the first flue gas；Melt process is carried out to bottom ash by melt element, and burns unit pair by second
First flue gas carries out secondary burning processing, further to remove the substances such as remaining dioxin, imflammable gas；It is burnt for the second time
After burning processing, flying dust and the second flue gas are obtained, melt process can be carried out to flying dust by melt element, and pass through gas cleaning list
The purified treatments such as member exchanges heat to the second flue gas, cools down, depickling, dedusting, denitration, washing, to realize the qualified discharge of flue gas.
In an embodiment, the processing system of hazardous waste includes pretreatment unit, enters the in hazardous waste raw material
Before one burns unit, can first pass through pretreatment unit raw material is crushed, is neutralized etc. pretreatment in order to subsequent burning at
The progress of reason, such as pretreatment unit may include crusher or the device neutralized.
As shown in Figure 1, first, which burns unit, includes revolution in the processing system of the hazardous waste of an embodiment of the present invention
Kiln, feeding device and feeding device.
Rotary kiln includes the kiln body 11 for carrying out burning disposal, and for the kiln head cover 12 and kiln hood 13 of sealing,
To keep the airtightness of dangerous waste incineration process.Kiln body 11 includes kiln hood and kiln tail, and kiln hood and kiln tail are located in the axial direction
The both ends of kiln body 11, kiln head cover 12 are set to kiln hood, and kiln hood 13 is set to kiln tail.Kiln head cover 12 is whole in long strip, has
The cavity of both ends open；Kiln head cover 12 can be cuboid, be also possible to cylinder, and the two-port of kiln head cover 12 can be used separately as
Through the resulting bottom ash of burning disposal and the first flue gas rotary kiln can be discharged from outlet flue, slag notch respectively in outlet flue and slag notch.
Outlet flue can be connected with the second burning unit, and slag notch can be connected with batch can 41, in order to which bottom ash enters melting by batch can 41
Unit.
Feeding device is used to burn solid-state hazardous waste feeding kiln body 11, passes through kiln head cover 12 and 11 phase of kiln body
Connection.Feeding device may include feed opening 14 and push rod 15.When operation, material enters feeding device from feed opening 14, and is pushing away
(being also possible to screw feeder) enters kiln body 11 under the action of bar 15.The feedstock direction of feed opening 14 can be parallel to the cigarette of outlet flue
Gas emission direction, and feedstock direction is opposite with the holding of flue gas emission direction.
Feeding device may be disposed at kiln tail, can be the device such as spray gun 16, in order to by the danger of liquid or semisolid
It is burned in the kiln body 11 of dangerous waste penetrating rotary kiln, feeding device can also be set to other positions according to burning situation.
Spray gun 16 can be set to kiln hood 13 along the axis direction of kiln body 11；Kiln hood 13 has slag notch, the slag notch of kiln hood 13
It is parallel to the slag notch setting of kiln head cover 12, and batch can 41 can be connected to together with the slag notch of kiln head cover 12；In kiln hood 13
On be additionally provided with smoke pipe, in order to melt element generate flue gas be passed through in rotary kiln, to rotary kiln carry out concurrent heating.
In an embodiment, the second burning unit includes dual firing chamber 21, and dual firing chamber can fire to be existing for high temperature
The device of burning.Dual firing chamber 21 is connected with the outlet flue of kiln head cover 12, from rotary kiln be discharged flue gas can in dual firing chamber 21 into
Second of burning disposal of row, obtains flying dust and the second flue gas；The flue gas for being passed through dual firing chamber 21 is generated including the first burning disposal
Flue gas and generated by melt element and be passed through the flue gas of rotary kiln.Flying dust can directly pass through chute (not shown),
It can be lifted into melt element by batch can and carry out melt process, the second flue gas enters subsequent gas cleaning unit and purified
Processing.
In an embodiment, gas cleaning unit include the heat-exchanger rig being sequentially communicated, cooling device, deacidifying device,
Dust-extraction unit, wash mill.Wherein, heat-exchanger rig can be waste heat boiler 31, and cooling device can be flash cold column 32, depickling dress
It sets and can be dry type extracting tower 33, dust-extraction unit can be bag filter 34, and wash mill can be single-stage or multistage washing
Tower can specifically be selected according to smoke components.For example, wash mill can be wet process extracting tower, including level-one wet type depickling
Tower 351 and second level wet type extracting tower 352.
The flue gas being discharged from dual firing chamber 21 can carry out heat exchange processing in waste heat boiler 31；Flue gas after heat exchange is through flash cold column
Depickling processing, the settable alkaline matter in dry type extracting tower 33 can be carried out by dry type extracting tower 33 after 32 coolings, such as disappeared
Lime, to absorb sour gas；Through depickling, treated that flue gas can be dusted processing by bag filter 34, enters later
Level-one wet type extracting tower 351 and second level wet type extracting tower 352 carry out carrying out washing treatment.Flue gas after being cleaned can be through flue gas heater
36 heat temperature raisings, and under the action of air-introduced machine 37, it is drained into atmosphere by chimney 38.
In addition, waste heat boiler 31, flash cold column 32, dry type extracting tower 33, bag filter 34 can be produced during processing
Raw flying dust is collected, and is delivered to melt element by scrapper conveyor.In addition to scraper plate conveying, flying dust can also pass through pneumatic conveying
Or other modes are sent into melt element.
In an embodiment, melt element includes melting plant, and energy source is electric energy.Melting plant can be electricity
Furnace 51, electric furnace can be ore-smelting electric furnace, plasma electric furnace etc..Ore-smelting electric furnace generates heat using lime-ash resistance and realizes lime-ash
Gas plasmaization is generated high temperature to melt lime-ash by melt process, plasma electric furnace.
The materials such as bottom ash, flying dust are melt through high-temperature process in electric furnace 51, and the flue gas that electric furnace 51 generates can pass through smoke pipe
It is passed through in rotary kiln, concurrent heating is carried out to rotary kiln.
In an embodiment, in addition to electric furnace 51, melt element further includes coring furnace and crystallization furnace (not shown), is melted
Body can be made into devitrified glass through the processing of coring furnace, crystallization furnace.
In another embodiment, in addition to electric furnace 51, melt element further includes centrifuge, cotton collecting machine and pleating machine (in figure
Do not show), melt can be made into cellucotton through the processing of centrifuge, cotton collecting machine and pleating machine.
In another embodiment, in addition to electric furnace 51, melt element further includes that water quenching slag bath and ball mill (are not shown in figure
Show), melt can be made into cement admixture through the processing of water quenching slag bath and ball mill.
In an embodiment, under the high temperature conditions, the solid waste after burning is melted by melt process as glass
State, is made devitrified glass after solidification, the compact texture of devitrified glass can ensure the permanent stability of solidified body.In addition, solid-state
The organic pollutant of waste passes through high temperature pyrolysis in melting process and is thoroughly decomposed, and the harmful elements such as heavy metal are cured
In vitreum, the harmlessness disposing of hazardous waste is realized.
In an embodiment, it is big that area is mixed using counterflow rotary kiln incinerator gas and solid, heat transfer efficiency is high,
Be conducive to increase burn rate, be suitble to the biggish hazardous waste of calorific value floatability；And the bottom ash that rotary kiln generates is sent directly into electricity
In furnace, the glass dregs that handle by high-temperature fusion can not only the harmful elements such as curing heavy metal, and height can be made
The building material product of added value realizes the resource utilization of hazardous waste.
In an embodiment, the processing system of hazardous waste includes fused raw material supply unit, is used for fused raw material
Bottom ash, flying dust etc. are delivered to electric furnace 51 and carry out melt process.Fused raw material supply unit may include chute, batch can 41, scrapper conveyor
Deng.Remaining bottom ash directly can be delivered to electric furnace 51 by chute after burning disposal, can also be in driving (not shown)
Effect is lower to be lifted into electric furnace 51 by batch can 41.
In an embodiment, the slag notch of kiln head cover 12 and the slag notch of kiln hood 13 can be connected with batch can 41
Logical, after the bottom ash that rotary kiln generates enters batch can 41, batch can 41 can move to feed bin 42, feed bin 42 and electric furnace under the action of driving
51 are connected.
Below in conjunction with Fig. 1 and specific embodiment to the operator of the processing system of the hazardous waste of an embodiment of the present invention
Formula is further described.
Embodiment
(1) medical waste, rectification residue and organic resin class waste add certainly after pretreatment unit carries out broken pretreatment
Material mouth 14 enters feeding device, and carries out burning disposal in the kiln body 11 for being pushed into counterflow rotary kiln under the action of push rod 15；
Meanwhile the hazardous waste of the liquid such as spent organic solvent and waste mineral oil being sprayed into kiln body 11 using spray gun 16 and is carried out at burning
Reason；
(2) temperature of kiln head of counterflow rotary kiln is maintained at 800 DEG C or so progress burning disposals, keeps full combustion,
The kiln hood and kiln tail of rotary kiln obtain bottom ash, and tapping temperature is 800 DEG C, and clinker ignition loss 2.5%, hot bottom ash is discharged into from slag notch
Batch can 41, and electric furnace 51 is moved under the action of driving, entered in electric furnace 51 (ore-smelting electric furnace) by feed bin 42 and is carried out at melting
Reason；
(3) enter dual firing chamber 21 from the flue gas that rotary kiln end is discharged and carry out burning disposal, ignition temperature is 1200 DEG C；Two
Remaining flying dust enters electric furnace 51 in combustion room 21, and the flue gas of discharge enters waste heat boiler 31 and realizes heat conversion, boiler export
Flue-gas temperature is 550 DEG C；The flue gas being discharged from waste heat boiler 31 enters flash cold column 32, is cooled to 200 DEG C rapidly；From flash cold column 32
The flue gas of outlet discharge enters dry type extracting tower 33, and the calcium hydroxide in dry type extracting tower 33 absorbs the partially acidic gas in flue gas
Body, exit gas temperature are 180 DEG C；The flue gas that self-drying type extracting tower 33 is discharged continues through bag filter 34, outlet temperature
It is 170 DEG C；Enter scrubbing tower by the flue gas of bag filter 34 --- level-one wet type extracting tower 351, second level wet type extracting tower
352, sour gas therein is absorbed by the NaOH solution in extracting tower, and exit gas temperature is 60 DEG C；Finally, being arranged from scrubbing tower
Flue gas out is heated up to 135 DEG C by flue gas heater 36, is drained into atmosphere by air-introduced machine 37 by chimney 38；
(4) by the flying dust generated in waste heat boiler 31, flash cold column 32, dry type extracting tower 33 and bag filter 34 by scraping
Trigger is delivered in electric furnace 51, is melt into slag together with the flying dust that bottom ash and dual firing chamber generate；In addition, quartz sand conduct is added
Constituent adjustment agent, mass fraction are the 10% of fused raw material (bottom ash+flying dust) quality；
(5) fused raw material and constituent adjustment agent are melt through high-temperature process in electric furnace 51, and melt temperature is 1350 DEG C, is glued
Degree is 2Pas, and is entered by melt discharge outlet and obtain the melt of stable homogeneous in clarifying and homogenizing pond；Electric furnace 51 is generated
Flue gas is passed through in counterflow rotary kiln by smoke pipe, carries out concurrent heating to rotary kiln；
(6) melt is sent into 650 DEG C of coring furnaces, keeps the temperature 5h, obtains the vitreum of certain shapes；Nucleating glass body is sent
Enter into crystallization furnace, crystallization furnace is warming up to 950 DEG C by 650 DEG C, and heating rate is 2 DEG C/min, and keeps the temperature 3h at 950 DEG C；It protects
After temperature, room temperature is cooled to the furnace, take out the devitrified glass of semi-finished product；
(7) semi-finished product devitrified glass is obtained into the devitrified glass product of shiny appearance by cutting, polishing, technique for grinding.
In another embodiment, step (6), (7), which may is that, send melt into four-roller centrifuge, in the work of centrifugal force
Fibrous product is obtained under, adding mass fraction thereto is 4% (using fibrous product and the gross mass of phenolic resin as base
It is quasi-) phenolic resin as bonding agent, 450g/m is formed in cotton collecting machine2A blanket；Gained blanket is sent into pleating machine
It is interior, so that being mutually lapped and being engaged between fiber；Obtained cellucotton is sent into 300 DEG C of curing ovens, the water in cellucotton is removed
Point, while rapid curing phenolic resin, obtain the Semifinished fibre cotton for meeting performance indicator；By Semifinished fibre cotton by cutting
It cuts, cool down, packing process obtains the cellucotton product for meeting performance indicator.
In another embodiment, step (6), (7) may is that the water quenching that melt Water Quenching is obtained to partial size < 5mm
Slag；After fishing out slag drying and processing, being milled to specific surface area is 250m3The powder of/kg can be used as cement admixture use.
Unless limited otherwise, term used herein is the normally understood meaning of those skilled in the art.
Embodiment described in the invention is merely for exemplary purpose, the protection scope being not intended to limit the invention,
Those skilled in the art can be made within the scope of the invention various other replacements, changes and improvements, thus, the present invention is not limited to
Above embodiment, and be only defined by the claims.
Claims (10)
1. a kind of processing system of hazardous waste characterized by comprising
First burns unit；
Melt element；
Second burns unit, is connected with the first burning unit；And
Gas cleaning unit is connected with the second burning unit.
2. system according to claim 1, which is characterized in that the first burning unit includes counterflow rotary kiln, described
The feedstock direction of counterflow rotary kiln is contrary with flue gas emission.
3. system according to claim 1, which is characterized in that the first burning unit includes rotary kiln and charging dress
It sets, the rotary kiln includes kiln body, and the kiln body includes the kiln hood and kiln tail positioned at both ends, and the kiln hood is provided with kiln hood
Cover, the kiln head cover include outlet flue and slag notch, and the outlet flue is connected with the second burning unit；
The feeding device is set to the kiln hood by the kiln head cover, and the feeding device includes feed opening, the charging
The neighbouring outlet flue of mouth, the separate slag notch.
4. system according to claim 1, which is characterized in that the melt element includes electric furnace, and the electric furnace is selected from mine
Electrothermal stove or plasma electric furnace.
5. system according to claim 4, which is characterized in that the melt element includes coring furnace and crystallization furnace.
6. system according to claim 4, which is characterized in that the melt element includes centrifuge, cotton collecting machine and pleating
Machine.
7. system according to claim 4, which is characterized in that the melt element includes water quenching slag bath and ball mill.
8. system according to claim 1, which is characterized in that the gas cleaning unit includes heat-exchanger rig, cooling dress
It sets, one of deacidifying device, dust-extraction unit, wash mill or a variety of.
9. system according to claim 1, which is characterized in that the gas cleaning unit include waste heat boiler, flash cold column,
Dry type extracting tower, bag filter and single-stage or multistage scrubbing tower.
10. system according to claim 1, which is characterized in that including pretreatment unit and fused raw material supply unit, institute
Pretreatment of the pretreatment unit for the hazardous waste is stated, the fused raw material supply unit is for fused raw material to be delivered to
The melt element.
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| CN201910312968.0A CN109959016A (en) | 2019-04-18 | 2019-04-18 | A kind of processing system of hazardous waste |
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| CN201910312968.0A CN109959016A (en) | 2019-04-18 | 2019-04-18 | A kind of processing system of hazardous waste |
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| CN201910312968.0A Pending CN109959016A (en) | 2019-04-18 | 2019-04-18 | A kind of processing system of hazardous waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112619561A (en) * | 2020-11-27 | 2021-04-09 | 深圳市捷晶能源科技有限公司 | Heavy metal-containing material treatment system and treatment method thereof |
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