CN106984633B - Utilize the method for plasma torch recycling treatment incineration of refuse flyash - Google Patents
Utilize the method for plasma torch recycling treatment incineration of refuse flyash Download PDFInfo
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- CN106984633B CN106984633B CN201710302846.4A CN201710302846A CN106984633B CN 106984633 B CN106984633 B CN 106984633B CN 201710302846 A CN201710302846 A CN 201710302846A CN 106984633 B CN106984633 B CN 106984633B
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- waste
- flying dust
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 239000010881 fly ash Substances 0.000 title claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 30
- 230000008018 melting Effects 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 29
- 239000002699 waste material Substances 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 239000010882 bottom ash Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000004056 waste incineration Methods 0.000 claims abstract description 6
- 239000006063 cullet Substances 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 35
- 239000003546 flue gas Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229910001868 water Inorganic materials 0.000 claims description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 10
- 239000011592 zinc chloride Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 6
- 235000020985 whole grains Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000010309 melting process Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 238000007537 lampworking Methods 0.000 claims description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 abstract description 2
- -1 treated Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 9
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002956 ash Substances 0.000 description 5
- 239000012159 carrier gas Substances 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- IWLUJCZGMDWKRT-UHFFFAOYSA-N azane oxygen(2-) titanium(4+) Chemical compound N.[O-2].[Ti+4].[O-2] IWLUJCZGMDWKRT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000010891 toxic waste Substances 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/58—Construction or demolition [C&D] waste
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of method using plasma torch recycling treatment incineration of refuse flyash, by adding consumer waste incineration bottom ash into flying dust, cullet, other siliceous wastes such as building waste and high heating value liquid dangerous waste and molding mode pre-processes raw material, treated, and raw material is sent by feed unit using oxygen as in the transferred-arc plasma torch melting furnace of working gas, flying dust melt after melting is cooled into vitreum through air-cooled, the tail gas generated in furnace first passes around salt collection and purifier units removal villaumite, enter back into acid recovery unit recycling HCl, SO2Recovery unit recycles SO2, so that tail gas is obtained harmless treatment, the sludge generated in treatment process melts down, waste water recycling, heat recovery, while processing the innoxious minimizing of dioxin in flying dust and curing heavy metal, no waste water and dregs discharge.
Description
Technical field
The present invention relates to flying dust process fields, and in particular to a kind of to be flown using the waste incineration of plasma torch recycling treatment
The method of ash.
Background technique
With China's industrialization, information-based and urbanization deep and modernized society rapid development, environmental pollution
It is increasingly severe, continue haze weather and high PM2.5 concerns somebody's vital interests with common people's health, so that it is tight to air pollution to increase the common people
The concern of principal characteristic, and one of main source of PM2.5 is exactly the burning of the wastes such as rubbish.Since 1979, China city
House refuse total amount is increased every year with about 9% average speed, and a small number of megalopolis have been more than even more this speed, over the years,
Up to 8,000,000,000 tons of waste total amount of the unordered stacking in the whole nation, seriously polluted atmosphere and groundwater resources.
For a long time, main both at home and abroad that house refuse is handled using the methods of sanitary landfills, biological compost and burning；But
It is that there are many drawbacks for these methods, and if landfill method occupied area is larger, there are secondary pollutions；Incineration method is also easy to produce a large amount of two
English and furans are disliked, and dioxin is one of current organic matter most toxic in the world, domestic garbage incineration flyash is by " country's danger
Dangerous waste register (2008) " it is classified as hazardous waste and is managed, it is handled as required with hazardous waste.Current processing mode is universal
There are processing to be not thorough, there are the various problems such as secondary pollution and serious waste of resources, this allows for people and has to seek more
Waste is dealt carefully with and efficiently used to effective processing method.The main method of flying dust processing at present includes solidification/stabilization
Change, plasma fusion, sintering, cement kiln collaboration processing etc..
Plasma melted glass is current state-of-the-art flying dust processing means, plasma melting technical treatment flying dust
Mechanism is as follows: for microcosmic angle, due to DC Electric Field, medium can discharge and generate largely takes can electronics, molecule by
In ionization and excitation is occurred by the intense bombardment for taking energy electronics, a series of physical and chemical reaction of simultaneous makes
Complicated poisonous and hazardous macromolecular waste is converted into the small molecule safe material of simple nonhazardous, therefore waste is degraded
With innoxious removal；For macroscopic perspective, arc discharge generates up to 7000 DEG C of plasma, flying dust is heated to very high
Temperature, to quickly and effectively destroy waste.Flammable organic principle sufficiently cracks gasification, makes to be converted to imflammable gas such as
Carbon monoxide, hydrogen etc., can be used for energy recovery.Non-flammable inorganic constituents becomes harmless slag after plasma high-temperature process
Body can be used as construction material, such as glass and metal.But there are many deficiencies for plasma melting technical treatment flying dust at present
Place, flying dust are directly entered in processing equipment, under the plasma jet impact in treatment furnace, it will cause two in subsequent tail gas
Secondary flying dust problem；The flue gas generated in system also cannot be handled friendly, and the flue gas that raw material melting process is discharged is mainly
CO2、SO2、H2O, the substances direct emission such as NaCl, KCl causes the waste of resource, easily formation secondary flying ash.
Summary of the invention
The problem to be solved in the present invention is that the method for existing processing incineration of refuse flyash not enough thoroughly easily forms two
Secondary pollution.
To solve the above problems, the present invention provides a kind of side using plasma torch recycling treatment incineration of refuse flyash
Method specifically includes following steps:
(1) additive is added in flying dust or bottom ash to be uniformly mixed, makes 1 ﹕ 1~3.8 of mass ratio of Ca and Si；
(2) mixture deployed in step (1) is compressed in flakes, through broken, whole grain and sieving technology, obtains granular substance
Material；
(3) above-mentioned granular material is passed through in plasma torch melting furnace, the flying dust melt after melting is through air-cooled cooling
Form vitreum；
(4) flue gas that raw material melting process in above-mentioned plasmatorch melting furnace discharges is passed through villaumite collector unit, this is
System includes concatenated heat-exchanger rig one and heat-exchanger rig two, 900~1000 DEG C of temperature of control in heat-exchanger rig one, heat-exchanger rig two
Interior 350~450 DEG C of control temperature；
(5) flue gas being discharged in villaumite collector unit in step (4) is passed through HCl collector unit；
(6) flue gas that HCl collector unit in step (5) is discharged is entered into SO2Recovery unit.
The additive containing Si is added into flying dust to pre-process raw material, treated, and raw material is sent by feed unit
In plasma torch melting furnace, the flying dust melt after melting is cooled into vitreum through air-cooled, and the tail gas generated in furnace passes through first
It crosses villaumite and collects removal villaumite, this internal system is heat exchange structure, make flue gas cool-down to 900~1000 DEG C in heat-exchanger rig one,
NaCl and KCl are separated, and enter back into series connection heat-exchanger rig two, control 350~450 DEG C of temperature in heat-exchanger rig two,
FeCl2、ZnCl2Equal substances are separated；Enter back into acid recovery unit recycling HCl, SO2Recovery unit recycles SO2, make tail gas
Harmless treatment is obtained, the sludge generated in treatment process melts down, waste water recycling, heat recovery, while innoxious minimizing
Recycle the byproduct and heat generated.
Further, substance isolated in heat exchanger two is dissolved in after water with NaOH tune pH value is 10-12.FeCl2、
ZnCl2Equal substances are separated, and adjust pH value for 10-12 after being re-dissolved in water, go out the micro huge sum of money such as Fe, Zn conducive to purification & isolation
Belong to, periodically melt down, recycles.
Additive in above-mentioned steps (1) is siliceous waste liquid, waste incineration bottom ash, cullet or building waste.It uses
Siliceous consumer waste incineration bottom ash, cullet, building waste, high heat toxic waste liquid etc. substitute other siliceous products, so that
Waste can be utilized rationally, and flying dust can be made to form vitreum, curing heavy metal.
Further, the partial size of granular material is preferably 10-40mm in above-mentioned steps (2).Be conducive in melting process
It is heated evenly, while reducing the entrainment in subsequent melt furnace or sintering process or flue secondary flying ash phenomenon.
Using pure oxygen as plasma torch working gas in above-mentioned steps (3).It is that working gas makes technique mistake using oxygen
Journey generates without additional nitric oxide or nitrogen dioxide, conducive to the post-processing of flue gas, containing in part flying dust or additive
The nitric oxide generated in itrogenous organic substance the perhaps few final discharge nitric oxide of titanium dioxide nitrogen quantity or nitrogen dioxide gas
Lower than national emission standard.
It is 1100-1600 DEG C that step (3) plasma, which melts in-furnace temperature, is conducive to the formation of glassy state.
Further, control temperature is preferably 1000 DEG C in heat-exchanger rig one in above-mentioned steps (4), control in heat exchanger two
Temperature is preferably 400 DEG C.
Further, substance isolated in heat exchanger two is dissolved in after water with NaOH tune pH value is 10-12.FeCl2、
ZnCl2Equal substances are separated, and adjust pH value for 10-12 after being re-dissolved in water, Fe, Zn come out conducive to purification & isolation etc. is micro heavy
Metal periodically melts down, and recycles.
Further, step (5) is specially and the flue gas being discharged in villaumite collector unit in step (4) is passed through in water, obtains
HCl solution.Operation is simple and feasible for this, low in cost.
Further, the SO in step (6)2Recovery unit, the cigarette that specially HCl recovery unit in step (5) is discharged
Gas and Ca (OH)2After being reacted, the preparation that whisker preparation unit carries out whisker is entered back into.
Compared with prior art, the beneficial effects of the present invention are:
(1) additive pretreatment is added to flying dust or bottom ash before plasma fusion, advantageously reduces subsequent melt furnace
Or entrainment or flue secondary flying ash phenomenon in sintering process；
(2) method provided by the invention obtains glassy state mixture by plasma fusion technology, is conducive to solidification and flies
Heavy metal in the pollutants such as ash；
(3) flue gas of discharge is handled, HCl, whisker, NaCl, KCl etc. can be recycled, accomplish minimizing, harmless
Change, the purpose of recycling.
Specific embodiment
For a better understanding of the present invention, the present invention is further illustrated below with reference to the present embodiment.
Embodiment 1
Flying dust is uniformly mixed with building waste, is compressed in flakes by rolling depressor, using broken, whole grain and sieving technology
The granular material that average grain diameter is 32mm is obtained, which is passed through in plasma torch melting furnace, is made with oxygen
For plasma torch work carrier gas, melting furnace temperature is 1500 DEG C, and the flying dust after melting obtains glassy state object through air-cooled cooling；
Flue gas discharge in melting furnace, is successively passed through heat-exchanger rig one and heat-exchanger rig two, wherein flue-gas temperature drops in heat-exchanger rig one
It is 1000 DEG C, NaCl and KCl are separated, and flue-gas temperature is reduced to 400 DEG C by heat-exchanger rig two, FeCl2、ZnCl2Equal substances quilt
It separates；The flue gas come out from heat-exchanger rig two is passed through in water and recycles HCl, flue gas not soluble in water is passed through Ca (OH)2
In, recycle SO2.Flue gas through above-mentioned processing is finally discharged, and reaches discharge standard.
Embodiment 2
Flying dust is uniformly mixed with cullet, is compressed in flakes by rolling depressor, is obtained using broken, whole grain and sieving technology
The granular material for being 25mm to average grain diameter, in the material, the mass values of Ca and Si are 4.0, which is led to
Enter in plasma torch melting furnace, worked carrier gas using oxygen as plasma torch, and melting furnace temperature is 1300 DEG C, after melting
Flying dust obtains glassy state object through air-cooled cooling；Flue gas discharge in melting furnace, is successively passed through heat-exchanger rig one and heat-exchanger rig
Two, wherein flue-gas temperature is reduced to 980 DEG C by heat-exchanger rig one, and NaCl and KCl are separated, and heat-exchanger rig two is by flue-gas temperature
390 DEG C are reduced to, FeCl2、ZnCl2Equal substances are separated, by isolated FeCl2、ZnCl2It is dissolved in after water with NaOH tune
PH value is 12, obtains the hydroxide sediment of solid, iron is obtained after melting down, the oxide of zinc recycles；It will be from heat-exchanger rig
Two flue gases come out are passed through in water, recycle HCl；Flue gas not soluble in water is passed through Ca (OH)2In, recycle SO2.Through above-mentioned processing
Gas be finally discharged, reach discharge standard.
Embodiment 3
Flying dust is uniformly mixed with waste incineration bottom ash, Si content is higher in the bottom ash, it is compressed in flakes by rolling depressor, then
Obtain the granular material that average grain diameter is 20mm by broken, whole grain and sieving technology, by the granular material be passed through etc. from
In daughter torch melting furnace, worked carrier gas using oxygen as plasma torch, and melting furnace temperature is 1100 DEG C, the flying dust warp after melting
Air-cooled cooling obtains glassy state object；Flue gas discharge in melting furnace, is successively passed through heat-exchanger rig one and heat-exchanger rig two, wherein
Flue-gas temperature is reduced to 900 DEG C by heat-exchanger rig one, and NaCl and KCl are separated, and flue-gas temperature is reduced to 400 by heat-exchanger rig two
DEG C, FeCl2、ZnCl2Equal substances are separated；The flue gas come out from heat-exchanger rig two is passed through in water, HCl is recycled；It will be insoluble
Ca (OH) is passed through in the flue gas of water2In, recycle SO2.Gas through above-mentioned processing is finally discharged, and reaches discharge standard.
Embodiment 4
Flying dust is uniformly mixed with waste liquid, Si content is higher in the waste liquid, is compressed in flakes by rolling depressor, using broken
Broken, whole grain and sieving technology obtain the granular material that average grain diameter is 10mm, which is passed through plasma torch
In melting furnace, worked carrier gas using oxygen as plasma torch, and melting furnace temperature is 1100 DEG C, and the flying dust after melting is through air-cooled cold
But glassy state object is obtained；Flue gas discharge in melting furnace, is successively passed through heat-exchanger rig one and heat-exchanger rig two, wherein heat exchange dress
It setting one and flue-gas temperature is reduced to 1000 DEG C, NaCl and KCl are separated, and flue-gas temperature is reduced to 400 DEG C by heat-exchanger rig two,
FeCl2、ZnCl2Equal substances are separated, by isolated FeCl2、ZnCl2Being dissolved in after water with NaOH tune pH value is 11, is obtained
To the hydroxide sediment of solid, iron is obtained after melting down, the oxide of zinc recycles；The flue gas that will be come out from heat-exchanger rig two
It is passed through in bag filter, removes a small amount of solid dust being wherein mingled with；Then the cigarette not come will be discharged from bag filter
Gas is passed through in water, obtains HCl solution；Flue gas not soluble in water is continued to be passed through Ca (OH)2In solution, SO is recycled2.Through above-mentioned processing
Gas be finally discharged, reach discharge standard.
Above-described embodiment is only preferred embodiment, is not limited the embodiments.For the common of fields
For technical staff, other different forms of changes or modifications may be made based on the above description.It is all according to the present invention
Equivalent changes and modifications made by the content of claim all should be used as technology scope of the invention.
Claims (5)
1. a kind of method using plasma torch recycling treatment incineration of refuse flyash, which comprises the following steps:
(1) additive is added in flying dust or bottom ash and is uniformly mixed to obtain mixture, make 1 ﹕ 1 of mass ratio of Ca and Si in mixture
~3.8；
(2) mixture deployed in step (1) is compressed in flakes, through broken, whole grain and sieving technology, obtains granular material；
(3) above-mentioned granular material is passed through in plasma torch melting furnace, the flying dust melt after melting is cooled into through air-cooled
Vitreum；
(4) flue gas that raw material melting process in plasmatorch melting furnace discharges is passed through villaumite collector unit, this element includes string
The heat-exchanger rig one and heat-exchanger rig two of connection, interior 900 ~ 1000 DEG C of temperature of the control of heat-exchanger rig one, isolate NaCl and KCl, change
350 ~ 450 DEG C of temperature of control, isolates FeCl in thermal two2And ZnCl2；
(5) flue gas being discharged in villaumite collector unit in step (4) is passed through HCl collector unit；
(6) flue gas that HCl collector unit in step (5) is discharged is passed through SO2Recovery unit；
Additive in the step (1) is siliceous waste liquid, waste incineration bottom ash, cullet or building waste；
The partial size of granular material is 10 ~ 40mm in the step (2)；
The step (5) is specially that the flue gas being discharged in villaumite collector unit in step (4) is passed through in water, obtains HCl solution；
SO in the step (6)2Recovery unit, the flue gas and Ca (OH) that specially HCl recovery unit in step (5) is discharged2
After being reacted, the preparation that whisker preparation unit carries out whisker is entered back into.
2. utilizing the method for plasma torch recycling treatment incineration of refuse flyash as described in claim 1, it is characterised in that
It is 10 ~ 12 with NaOH tune pH value after substance isolated in step (4) heat-exchanger rig two is dissolved in water.
3. utilizing the method for plasma torch recycling treatment incineration of refuse flyash as described in claim 1, it is characterised in that
Using pure oxygen as plasma torch working gas in step (3).
4. utilizing the method for plasma torch recycling treatment incineration of refuse flyash as described in claim 1, it is characterised in that
It is 1100 ~ 1600 DEG C that step (3) plasma, which melts in-furnace temperature,.
5. utilizing the method for plasma torch recycling treatment incineration of refuse flyash as described in claim 1, it is characterised in that
Controlled at 1000 DEG C in heat-exchanger rig one in the step (4), heat-exchanger rig two is interior controlled at 400 DEG C.
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| CN107954587A (en) * | 2017-12-04 | 2018-04-24 | 江苏天楹环保能源成套设备有限公司 | A kind of method of the heavy metal-polluted mud resource of high chlorine |
| CN110043905B (en) * | 2019-04-02 | 2021-04-02 | 中广核研究院有限公司 | Additive for vitrification treatment of incineration fly ash and method for vitrification treatment of incineration fly ash |
| CN110615451A (en) * | 2019-10-21 | 2019-12-27 | 博天环境集团股份有限公司 | Method and system for recycling and harmlessly treating salt in high-salt-content wastewater |
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| CN111548007B (en) * | 2020-04-08 | 2023-03-14 | 中国恩菲工程技术有限公司 | Fly ash disposal method |
| CN112355033B (en) * | 2020-11-16 | 2023-11-10 | 浙江蓝太能源工程有限公司 | High-temperature melting system of thermal plasma torch |
| CN114517107A (en) * | 2020-11-20 | 2022-05-20 | 武汉恒创能源技术有限公司 | Method and system for preparing hydrogen oil by converting ultrahigh-temperature fly ash |
| CN113479922B (en) * | 2021-08-10 | 2023-04-07 | 江苏天楹等离子体科技有限公司 | Water washing-plasma melting garbage incineration fly ash recycling device and method |
| CN113441536B (en) * | 2021-08-31 | 2021-12-07 | 中国恩菲工程技术有限公司 | Fly ash treatment system and fly ash treatment method |
| CN115448330B (en) * | 2022-09-16 | 2023-10-20 | 光大环保技术研究院（深圳）有限公司 | System and process for recycling and separating chloride salt in flue gas after plasma melting of fly ash |
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