CN110125141A - Bed material and preparation process and processing method for incineration of refuse flyash melting - Google Patents
Bed material and preparation process and processing method for incineration of refuse flyash melting Download PDFInfo
- Publication number
- CN110125141A CN110125141A CN201910399676.5A CN201910399676A CN110125141A CN 110125141 A CN110125141 A CN 110125141A CN 201910399676 A CN201910399676 A CN 201910399676A CN 110125141 A CN110125141 A CN 110125141A
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- China
- Prior art keywords
- bed material
- incineration
- melting
- refuse flyash
- flying dust
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- 239000000463 material Substances 0.000 title claims abstract description 58
- 230000008018 melting Effects 0.000 title claims abstract description 40
- 238000002844 melting Methods 0.000 title claims abstract description 38
- 239000010881 fly ash Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000003672 processing method Methods 0.000 title abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 239000008399 tap water Substances 0.000 claims abstract description 4
- 235000020679 tap water Nutrition 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 239000010813 municipal solid waste Substances 0.000 claims description 10
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 8
- 239000006063 cullet Substances 0.000 claims description 7
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- 239000002817 coal dust Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000004056 waste incineration Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000010459 dolomite Substances 0.000 claims description 2
- 229910000514 dolomite Inorganic materials 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 1
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 13
- 238000002386 leaching Methods 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003546 flue gas Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000010309 melting process Methods 0.000 abstract description 2
- 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 1
- 230000000052 comparative effect Effects 0.000 description 13
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-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
- 238000004458 analytical method Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 231100000770 Toxic Equivalency Factor Toxicity 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 231100000820 toxicity test Toxicity 0.000 description 1
- 238000005303 weighing 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
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The embodiment of the invention discloses a kind of bed material for incineration of refuse flyash melting and preparation processes and processing method, are related to field of environment engineering technology.The bed material is made of material powder and liquid, and the material powder includes flying dust, silica, basic agent, fluxing agent, binder and carbon dust, and the liquid is selected from one or more of tap water, biogas slurry, Leachate site.The bed material melting temperature of the embodiment of the present invention reduces, the Leaching of Heavy Metals concentration of molten product vitreum is far below standard limited value, and dioxin and Conventional pollution content meet national regulation in flue gas, thoroughly realize the innoxious of flying dust, to solve secondary pollution problems caused by incineration of refuse flyash, resource is recycled simultaneously, has the advantages of energy saving, to reduce cost, the treatment of wastes with processes of wastes against one another, cooperative disposal, be easy to large-scale industrial production and application.
Description
Technical field
The present embodiments relate to field of environment engineering technology, and in particular to a kind of bed for incineration of refuse flyash melting
Layer material and preparation process and processing method.
Background technique
Incineration of refuse flyash is the solid waste through exhaust gas purification system trapping after waste incineration, is rich in a variety of Leachings
The poisonous and harmful substances such as high heavy metal and dioxin, if unreasonable to incineration of refuse flyash disposition, in certain special feelings
These poisonous and harmful substances are oozed out from flying dust under condition, can cause serious pollution to water body, the soil etc. in surrounding enviroment, are broken
Bad ecological environment endangers human life's safety, thus is put into " National Hazard waste register " (2016 editions), belongs to national stringent
The hazardous waste of control.
Melt process is using fuel or electric power heating flying dust to melting temperature, the organic matter in flying dust occurs to thermally decompose,
Burning and gasification, inorganic matter then melt and form nature of glass molten liquid.Since fusing fly ash temperature is up to 1300 DEG C, two in flying dust
It dislikes the organic pollutants such as English to be destroyed because of pyrolytic and ultraviolet radiation, avoids flying dust dioxin contamination.Institute in flying dust
The heavy metal salt contained, small part occurs gasification (mainly low melting point) and enters flue gas, most of then be transferred to molten liquid
In, heavy metals immobilization is realized in its network structure and stabilizes purpose by vitreum of the molten liquid through being cooled into, vitreum
Harmful substance leaching characteristic is substantially reduced, and density dramatically increases, and molten product volume reduction is up to 1/2 or more, and the property of vitreum
Matter is stablized, and intensity is higher, can be used as roadbed material, achievees the purpose that effective use.
Melt process advantage is that loss of weight degree is high, volume reduction ratio is big, resolution organic pollutant is thorough, heavy metal stabilization is solid
Change reliable；The disadvantage is that process energy consumption is big, equipment spends big, heavy metal secondary pollution easy to form, it is difficult to eliminate secondary pollution operation
Degree and cost are larger.
In view of this, the present invention is specifically proposed.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of bed material for incineration of refuse flyash melting and preparation process and place
Reason method, when carrying out melt process, melting temperature reduces the bed material, the Leaching of Heavy Metals concentration of molten product vitreum
Far below standard limited value, and in flue gas, dioxin and Conventional pollution content meet national regulation, thoroughly realize flying dust
It is innoxious, have it is energy saving, reduce cost, the treatment of wastes with processes of wastes against one another, cooperative disposal, and be easy to heavy industrialization application the advantages of,
To solve the problems, such as present in conventional garbage flying ash melt process.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, the embodiment of the invention provides one kind melts for incineration of refuse flyash
Bed material, the bed material is made of material powder and liquid, weight percentage, and the material powder includes
Flying dust 70~80%, silica 0~20%, basic agent 0~15%, fluxing agent 1~5%, binder 1~5%, carbon dust 1
~5%, the liquid is selected from one or more of tap water, biogas slurry, Leachate site, and the additive amount of the liquid is raw material powder
The 3~8% of body total weight.
Further, the flying dust is derived from the SDA desulfurizing tower and bag filter of garbage burning factory.
Further, the fluxing agent is 0.1~0.3:0.1~0.3:0.1~0.3:0.1~0.2 by weight ratio
TiO2、MgO、B2O3/ borax, CaF2It is mixed.
Further, the binder is selected from one or more of bentonite, sodium metasilicate, sodium humate.
Further, the carbon dust is selected from one or more of coal dust, coke, charcoal, residue after gasifying.
Further, the silica is selected from one or more of cullet, silica sand, quartz sand.
Further, the basic agent is selected from one or more of soda ash, quick lime, dolomite.
According to a second aspect of the embodiments of the present invention, the embodiment of the invention provides a kind of above-mentioned winged for waste incineration
Ash melting bed material preparation process, the technique the following steps are included:
(1) pretreatment of raw material
Flying dust, silica, basic agent, fluxing agent, binder, carbon dust are crushed respectively, each component after being crushed
Granularity is 50~200 mesh；
(2) pug is prepared
Flying dust, silica, basic agent, fluxing agent, binder, carbon dust, liquid are mixed according to the weight ratio, are stirred
It mixes and pug is uniformly made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, is made after cooling, natural drying, screening and is burnt for rubbish
Burn the bed material of fusing fly ash.
Further, the pressure of extrusion forming is 0.8~1.5MPa.
According to a third aspect of the embodiments of the present invention, the embodiment of the invention provides a kind of uses made of above-mentioned technique
In the processing method of the bed material of incineration of refuse flyash melting, the bed material is added in melting furnace heat and is melted
Melt processing, the temperature of the heating melting processing is 1300~1350 DEG C, and the time is 24~48h, and the molten liquid of formation is through water quenching
Form vitreum.
The embodiment of the present invention has the advantages that
1, bed material of the embodiment of the present invention is with flying dust, silica, basic agent, fluxing agent, binder and carbon dust
Raw material can not only realize the characteristics such as the low fusing point of flying dust high-temperature fusion, good fluidity, viscosity is low, and additional auxiliary doses is low
In 30%, the low energy consumption of flying dust high-temperature fusion processing is realized.
2, the fluxing agent of the embodiment of the present invention includes TiO2、MgO、B2O3、CaF2, complex role enhancing between each component should
Nucleating agent of the flux as flying dust high-temperature fusion, can significantly reduce fusing fly ash temperature and melt viscosity, improves molten liquid
Mobility, and the Leaching of Heavy Metals concentration of molten product vitreum is far below standard limited value, improves the curing degree of heavy metal, flue gas
Middle dioxin and Conventional pollution content meet national regulation, thoroughly realize the harmless treatment of flying dust, to solve rubbish
Secondary pollution problems caused by flying ash, while can be recycled to vitreum, there is certain economic effect
Benefit.
3, the liquid in the bed material of the embodiment of the present invention is selected from tap water, biogas slurry or Leachate site, realizes and " is controlled with useless
The environmental protection concept of useless, cooperative disposal ".
4, method disclosed by the embodiments of the present invention is simple, strong operability, is easy to large-scale industrial production and application.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
This part carries out general description to the material and test method that arrive used in present invention test.Although being
It realizes many materials used in the object of the invention and operating method is it is known in the art that still the present invention still uses up herein
It may detailed description.It will be apparent to those skilled in the art that within a context, if not specified, material therefor of the present invention and behaviour
It is well known in the art as method.
Wherein, biogas slurry is the waste liquid that house refuse anaerobic jar generates.
Leachate site is life rubbish pit and the waste liquid that refuse landfill generates.
Cullet is that garbage burning factory sorts what workshop generated.
Residue after gasifying is the bottom ash that refuse gasification boiler generates.
Embodiment 1
The flying dust of the present embodiment is derived from the desulfurizing tower and bag filter of the SDA of Beijing garbage burning factory, glimmering through X-ray
Photothermal spectroscopic analyzer analysis, basis are shown in Table 1.
Basis (mass fraction) % of 1 flying dust of table
| CaO | SiO2 | Cl | S | Al2O3 | C | H | MgO | Fe2O3 |
| 36.80 | 8.42 | 24.69 | 3.62 | 3.01 | 3.24 | 0.33 | 2.33 | 1.07 |
The TiO that fluxing agent is 0.2:0.3:0.1:0.2 by weight ratio2、MgO、B2O3、CaF2It is mixed.
The present embodiment for incineration of refuse flyash melting bed material preparation process the following steps are included:
(1) pretreatment of raw material
Flying dust, fluxing agent are crushed respectively, the granularity of each component is 100~120 mesh after being crushed；
(2) raw material proportioning
By broken flying dust, silica sand, quick lime, fluxing agent, bentonite, coal dust, biogas slurry according to weight ratio 0.7:0.08:
0.12:0.05:0.03:0.02:0.04 is mixed, and stirs evenly and pug is made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, the pressure of extrusion forming is 1.2MPa, through cooling, after screening
The sphere that diameter is 30~40mm is made.
Embodiment 2
The flying dust composition of the present embodiment is identical as the flying dust composition of embodiment 1.
The TiO that fluxing agent is 0.3:0.1:0.2:0.1 by weight ratio2, MgO, borax, CaF2It is mixed.
The present embodiment for incineration of refuse flyash melting bed material preparation process the following steps are included:
(1) pretreatment of raw material
Flying dust, cullet, soda ash, fluxing agent, sodium metasilicate, charcoal are crushed respectively, the granularity of each component after being crushed
For 60~80 mesh；
(2) raw material proportioning
By broken flying dust, cullet, soda ash, fluxing agent, sodium metasilicate, charcoal, Leachate site according to weight ratio 0.74:
0.11:0.06:0.04:0.03:0.02:0.07 is mixed, and stirs evenly and pug is made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, the pressure of extrusion forming is 1.0MPa, through cooling, after screening
The sphere that diameter is 40~45mm is made.
Embodiment 3
The flying dust of the present embodiment is derived from the desulfurizing tower and bag filter of the SDA of Beijing garbage burning factory, glimmering through X-ray
Photothermal spectroscopic analyzer analysis, basis are shown in Table 2.
Basis (mass fraction) % of 2 flying dust of table
| CaO | SiO2 | Cl | S | Al2O3 | C | H | MgO | Fe2O3 |
| 36.40 | 8.19 | 23.16 | 3.55 | 2.97 | 3.26 | 0.28 | 2.44 | 0.97 |
The TiO that fluxing agent is 0.2:0.2:0.1:0.2 by weight ratio2、MgO、B2O3、CaF2It is mixed.
The present embodiment for incineration of refuse flyash melting bed material preparation process the following steps are included:
(1) pretreatment of raw material
Flying dust, silica sand, soda ash, fluxing agent, bentonite, residue after gasifying are crushed respectively, the granularity of each component after being crushed
For 120~150 mesh；
(2) raw material proportioning
By broken flying dust, silica sand, soda ash, fluxing agent, bentonite, residue after gasifying, Leachate site according to weight ratio 0.77:
0.12:0.04:0.03:0.02:0.02:0.05 is mixed, and stirs evenly and pug is made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, the pressure of extrusion forming is that 1MPa makes after screening through cooling
Obtain the sphere of 45~50mm of diameter.
Embodiment 4
The flying dust composition of the present embodiment is identical as the flying dust composition of embodiment 3.
The TiO that fluxing agent is 0.3:0.15:0.1:0.2 by weight ratio2, MgO, borax, CaF2It is mixed.
The present embodiment for incineration of refuse flyash melting bed material preparation process the following steps are included:
(1) pretreatment of raw material
Flying dust, cullet, fluxing agent, sodium metasilicate, coke are crushed respectively, be crushed after each component granularity be 80~
100 mesh；
(2) raw material proportioning
By broken flying dust, cullet, fluxing agent, sodium metasilicate, coke, biogas slurry according to weight ratio 0.8:0.14:
0.02:0.02:0.02:0.06 is mixed, and stirs evenly and pug is made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, the pressure of extrusion forming is 1.2MPa, through cooling, after screening
The blocks of long generous respectively 40~60mm, 40~60mm, 20~40mm is made.
Comparative example 1
This comparative example only exists for the preparation process of bed material of incineration of refuse flyash melting and the difference of embodiment 1
In not including fluxing agent in material powder.
Comparative example 2
This comparative example only exists for the preparation process of bed material of incineration of refuse flyash melting and the difference of embodiment 1
In, used fluxing agent is different, and the fluxing agent of this comparative example does not include MgO, specifically, the fluxing agent that uses of this comparative example by
Weight ratio is the TiO of 0.5:0.1:0.22、B2O3、CaF2It is mixed.
Test case
(1) melting characteristic of incineration of refuse flyash
Embodiment 1-4 and comparative example 1-2 is made in 1 reference standard GB/T219-1996 (coal ash melting property test method)
The melting characteristic temperature of bed material tested.It the results are shown in Table 3.
Table 3
| Bed material | Flowing temperature (FT)/DEG C | Flow regime |
| Embodiment 1 | 1320 | It is good |
| Embodiment 2 | 1350 | It is good |
| Embodiment 3 | 1300 | It is good |
| Embodiment 4 | 1350 | It is good |
| Comparative example 1 | 1450 | Difference |
| Comparative example 2 | 1400 | Generally |
The result shows that: relative to the bed material of comparative example 1-2, the flowing temperature of bed material made from the embodiment of the present invention
Spending (FT) reduces, and the flow regime of the melten glass body of formation more preferably, realizes the purpose for reducing the energy consumption of melt process.
2 leach toxicity tests
Bed material made from embodiment 1-4 and comparative example 1-2 is added separately to carry out at heating melting in melting furnace
Reason, the molten liquid of formation form vitreum through water quenching.
According to the regulation of " solid waste Leaching leaching method horizontal vibration method " (HJ 557-2010): weighing butt
Weight is the style of 100g, is placed in 2L extraction flask, adds distilled water 1L, solid-to-liquid ratio 1:10.PH is adjusted with NaOH or HCI.It will
Plastic bottle is perpendicularly fixed on oscillator, and adjusting frequency of oscillation is 110 ± 10 times/min, amplitude 40mm.Experimental temperature is room temperature
(25±5℃).Duration of oscillation 8h places 16h, and with glass funnel, 0.45 μm of membrane filtration picks up filtrate with conical flask.Then
Content of beary metal is measured with atomic absorption spectrophotometer.Hg uses fluorescent screen spectrophotometric determination.Test result is shown in Table 4.
Using standard: " hazardous waste judging standard leaching characteristic identification " (GB5085.3-2007 replaces GB5085.3-1996)
4 mg/L of table
The result shows that: the vitreum that the bed material of 1-4 of the embodiment of the present invention and comparative example 1-2 are obtained through melt process
Leaching of Heavy Metals concentration in standard limited value hereinafter, and relative to comparative example, the bed material of the embodiment of the present invention through melting at
The Leaching of Heavy Metals concentration of vitreum after reason is relatively far below standard limited value, illustrates that bed material of the embodiment of the present invention is more efficient
Heavy metal package is solidificated in vitreum lattice structure by ground, greatly reduces its Leaching, realizes that waste resource recovery is sharp again
Purpose.
3 flue gas inspections
1) dioxin
The dioxins concentration in flue gas generated in melt process to the bed material of the embodiment of the present invention is examined
It surveys, the results showed that, the total toxic equivalent concentration of dioxin is 0.082-0.125ng/m3, far below the 0.5ng/m of national regulation3's
Standard, the processing method of the bed material of the embodiment of the present invention realize effective control to dioxin in tail gas, avoid pair
The secondary pollution of environment.
2) Conventional pollution
It is right referring to " measurement of Concentration in Fixed Pollutants Source particulate matter and the gaseous pollutant method of sampling " (GB/T16157-1996)
Each pollutant concentration is tested in flue gas, and test result is shown in Table 5.
Table 5
| Test item | Testing result | Standard limited value |
| Particulate matter quality concentration | 8.7~12.0 | 100 |
| Arsenic discharge quality concentration | 0.05~0.08 | 1.0 |
| Nickel discharge quality concentration | 0.02~0.06 | 1.0 |
| Mercury emissions mass concentration | 0.004~0.09 | 0.1 |
| Cadmium discharge quality concentration | 0.008~0.015 | 0.1 |
| Lead discharge quality concentration | 0.005~0.018 | 1.0 |
| Manganese discharge quality concentration | 0.06~0.36 | 4.0 |
| Copper bar puts mass concentration | 0.08~0.22 | 4.0 |
| Chromium discharge quality concentration | 0.02~0.35 | 4.0 |
| SO2Discharge quality concentration | 15.8~25.5 | 400 |
| NOx emission mass concentration | 2.8~4.0 | 500 |
| HCl discharge quality concentration | 0.5~1.2 | 100 |
| CO discharge quality concentration | 2.2~5.0 | 100 |
The result shows that: Conventional pollution meets the emission limit of national regulation in flue gas.
When carrying out melt process, melting temperature reduces the bed material of the embodiment of the present invention, molten product vitreum
Leaching of Heavy Metals concentration is far below standard limited value, and dioxin and Conventional pollution content meet national regulation in flue gas, thorough
Bottom realizes the innoxious of flying dust, have it is energy saving, reduce cost, the treatment of wastes with processes of wastes against one another, cooperative disposal, and be easy to large-scale industry
The advantages of changing application, to solve the problems, such as present in conventional garbage flying ash melt process.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of bed material for incineration of refuse flyash melting, which is characterized in that the bed material by material powder and
Liquid is made, weight percentage, and the material powder includes flying dust 70~80%, silica 0~20%, alkaline medicine
Agent 0~15%, fluxing agent 1~5%, binder 1~5%, carbon dust 1~5%, the liquid are selected from tap water, biogas slurry, Leachate site
One or more of, the additive amount of the liquid is the 3~8% of material powder total weight.
2. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the flying dust takes
From the SDA desulfurizing tower and bag filter of garbage burning factory.
3. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the fluxing agent
It is 0.1~0.3:0.1~0.3:0.1~0.3:0.1~0.2 TiO by weight ratio2、MgO、B2O3/ borax, CaF2Mixing system
At.
4. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the binder
Selected from one or more of bentonite, sodium metasilicate, sodium humate.
5. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the carbon dust choosing
From one or more of coal dust, coke, charcoal, residue after gasifying.
6. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the titanium dioxide
Silicon is selected from one or more of cullet, silica sand, quartz sand.
7. the bed material according to claim 1 for incineration of refuse flyash melting, which is characterized in that the alkalinity medicine
Agent is selected from one or more of soda ash, quick lime, dolomite.
8. a kind of preparation process of the bed material as claimed in claim 1 to 7 for incineration of refuse flyash melting, special
Sign is, the technique the following steps are included:
(1) pretreatment of raw material
Flying dust, silica, basic agent, fluxing agent, binder, carbon dust are crushed respectively, the granularity of each component after being crushed
For 50~200 mesh；
(2) pug is prepared
Flying dust, silica, basic agent, fluxing agent, binder, carbon dust, liquid are mixed according to the weight ratio, and stirring is equal
It is even that pug is made；
(3) extrusion forming
Pug is imported into roto-granulato and carries out extrusion forming, is made after cooling, natural drying, screening and flies for waste incineration
The bed material of ash melting.
9. the preparation process of the bed material according to claim 8 for incineration of refuse flyash melting, which is characterized in that
The pressure of extrusion forming is 0.8~1.5MPa.
10. a kind of processing side made of technique according to any one of claims 8 for the bed material of incineration of refuse flyash melting
Method, which is characterized in that the bed material is added to progress heating melting processing in melting furnace, the heating melting processing
Temperature is 1300~1350 DEG C, and the time is 24~48h, and the molten liquid of formation forms vitreum through water quenching.
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Cited By (4)
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| CN112377928A (en) * | 2020-11-20 | 2021-02-19 | 武汉科技大学 | Low-melting-point waste incineration fly ash containing composite fluxing agent and application of low-melting-point waste incineration fly ash in heat recovery and solidification process of molten blast furnace slag fluidized bed |
| CN112642842A (en) * | 2021-01-01 | 2021-04-13 | 天津壹鸣环境科技股份有限公司 | Method and system for recycling household garbage incineration fly ash through high-temperature melting and full resource classification |
| CN113683305A (en) * | 2021-08-03 | 2021-11-23 | 东方电气集团科学技术研究院有限公司 | System for melting, harmless and cooperative disposal of household garbage incineration fly ash |
| CN114713601A (en) * | 2022-03-28 | 2022-07-08 | 辽宁海天阁环保科技有限公司 | Point-to-point directional treatment and utilization method for waste incineration fly ash |
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| CN114713601A (en) * | 2022-03-28 | 2022-07-08 | 辽宁海天阁环保科技有限公司 | Point-to-point directional treatment and utilization method for waste incineration fly ash |
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