CN108273825A - Recycling method of household garbage incineration fly ash - Google Patents
Recycling method of household garbage incineration fly ash Download PDFInfo
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- CN108273825A CN108273825A CN201711500606.1A CN201711500606A CN108273825A CN 108273825 A CN108273825 A CN 108273825A CN 201711500606 A CN201711500606 A CN 201711500606A CN 108273825 A CN108273825 A CN 108273825A
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- Prior art keywords
- flying dust
- fly ash
- grinding
- grinder
- powder
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000010881 fly ash Substances 0.000 title claims abstract description 22
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title abstract description 3
- 239000000428 dust Substances 0.000 claims abstract description 72
- 239000000843 powder Substances 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000227 grinding Methods 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 24
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 12
- 239000010452 phosphate Substances 0.000 claims abstract description 12
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 229940005740 hexametaphosphate Drugs 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- -1 phosphoric acid hydrogen Chemical class 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 229960001922 sodium perborate Drugs 0.000 claims description 3
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 2
- 229960001841 potassium permanganate Drugs 0.000 claims description 2
- 229940045872 sodium percarbonate Drugs 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims 1
- 235000011180 diphosphates Nutrition 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 6
- 239000000920 calcium hydroxide Substances 0.000 abstract description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 6
- 238000000354 decomposition reaction Methods 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 1
- 239000011362 coarse particle Substances 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 12
- 239000000779 smoke Substances 0.000 description 8
- 239000000356 contaminant Substances 0.000 description 7
- 244000089742 Citrus aurantifolia Species 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000004056 waste incineration Methods 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a method for recycling fly ash generated by burning household garbage, wherein a shunting device is arranged at the lower end of a dust collector of a garbage burning flue gas treatment system, the amount of the fly ash circularly entering a media-free grinder is controlled, the fly ash is prevented from agglomerating in a grinding medium or adhering on the inner wall of the grinder to influence the grinding effect, after the fly ash is ground in a grinding bin, a high-pressure centrifugal fan brings ground powder into a powder selecting machine, fine powder meeting the fineness requirement enters a circulating system along with air flow, coarse particle materials which do not meet the fineness requirement return to the grinding bin for continuous grinding, the particle size of the ground fine powder is ensured to be uniform and kept in a certain range, unreacted calcium hydroxide is fully exposed, the specific surface area of the fly ash is increased, the utilization rate of the calcium hydroxide in the fly ash can be increased to more than 80%, and continuous. Meanwhile, phosphate is added into the medium-free grinder to pre-stabilize heavy metal, reduce the use amount of a subsequent deacidification agent and play a role in grinding; and a strong oxidant is added to play roles in desulfurization and denitrification and promotion of dioxin decomposition.
Description
Technical field
The invention belongs to solid waste to recycle, disposal technology field, more particularly to a kind of consumer waste incineration flies
Grey circulation utilization method.
Background technology
Finding is shown, currently, the ratio between the lime consumption amount of domestic majority garbage incinerating power plant and flying dust yield
1: 3~1: 2 are averagely up to, i.e. lime contributes to 30%~50% or so flying dust amount, and certain areas are even up to 80%.According to me
State consumer waste incineration contamination control new standard GB18485-2014 provides that the 24 small hourly value standard limits of HCl are by 100mg/
m3(GB18485-2001) it is down to 50mg/m3；It is even more to require the per day discharges of HCl dense that European Union, which newly burns standard (2000/76/EC),
Degree must not exceed 10mg/m3.Waste incineration enterprise is to ensure flue gas qualified discharge, and majority takes the mode of more spray lime whites, no
But fume treatment cost increase also results in flying dust amount and increases, while the stabilization processes difficulty of flying dust is also in generally to increase
Trend.
Patent 201420575120.X discloses a kind of waste incineration dry method fly ash re-injection system, and this method sprays flying dust
Enter in the flue before desulfurizing tower, unreacted desulfurizing agent carries out secondary response in ash, can reduce the usage amount and flying dust of desulfurizing agent
Total yield.The flying dust containing a large amount of unreacted deacidification agents that deduster can be trapped returns to smoke processing system and applies again, drops
The deacidification agent dosage and flying dust yield of low original flue gas.But as flying dust is directly fed smoke processing system again, due to flying dust
In calcium hydroxide particle surface covered by reaction products such as carbon dioxide in flue gas before, sulfur oxide, hydrogen chloride, Wu Fayu
Above-mentioned pollutant in flue gas is contacted again and reacts.
Patent 201510391535.0 discloses a kind of harmless disposition of flying dust high efficiency, low cost of mechanochemistry combination washing
Method and system, this method calcium intrinsic using in flying dust, aluminium, magnesium crystal compound utilize the grinding of ball mill as additive
Realize heavy metals immobilization and dioxin degradation in flying dust.This method principle is the high velocity impact utilized between abrading-ball and flying dust, will
Mechanical force is transmitted on target contaminant, and when energy, which is sufficiently achieved, to be converted to chemical energy, target contaminant starts decomposition and inversion.
But garbage power plant generally uses semidry method depickling, obtained flying dust to have certain moisture content (normal condition 2%~5%, but sometimes
Up to 10% or so), above-mentioned patented technology is inevitably reunited flying dust using abrading-ball as medium milling flying dust
The inner wall and bottom of abrading-ball periphery or ball mill form the backing strap with cushioning effect, can not efficiently realize high velocity impact energy
The generation and conversion of amount, therefore heavy metals immobilization rate and dioxin degradation rate are very low in flying dust, and such lapping mode does not have
Powder function is selected, obtained particle size of fly ash is uneven, and particle size range is uncontrollable, and unreacted deacidification agent can not be made fully to expose, and flies
The specific surface area of ash increases also very limited, therefore flying dust recycles actual effect unobvious.Meanwhile the patented technology is interval
Formula operates, and after needing to be stored flying dust, grinding a few houres discharging, then carries out next round grinding, it is difficult to realize continuous work
Industry application.
Therefore develop it is a kind of effectively heavy metal in flying dust and dioxin continuously can be pre-processed, and can give full play to winged
The flying dust recycle utilization of unreacted medicament deacidifying flue gas potentiality in ash reduces former flue gas of refuse burning processing system to realizing
Deacidification agent dosage, reduce the total yield of flying dust, and by above-mentioned technology progress industrial applications play the role of it is very positive.
Invention content
The present invention directly returns in flue gas of refuse burning processing system for solution flying dust and recycles existing active ingredient not
Abundant exposure, the defect that cyclic utilization rate is low, cannot achieve continuity industrial applications etc., and propose a kind of by smoke duster
The part flying dust of collection is ground, sorts, activate after return to the method for smoke processing system, this method can greatly improve flying dust
Specific surface area, efficiently utilize unreacted deacidification agent in flying dust, reduction original flue gas of refuse burning processing system deacidification agent and again
Metallic stabilizer dosage reduces the total yield of flying dust, and can realize that industrialization is worked continuously.
The present invention is achieved by the following technical programs：
It (1), will in the defeated grey equipment outlet installation part flow arrangement of the deduster of flue gas of refuse burning processing system and flowmeter
The part flying dust of deduster trapping is diverted in no medium grinder, and the aperture by adjusting part flow arrangement is controllable into no Jie
The amount of flying dust in matter grinder；
The flying dust quality being recycled into no medium grinder and the flying dust mass ratio into flying dust repository is discharged into outside
Example is 1: 5-2: 1；
The no medium grinder be connected superfine pulverizer, Raymond mill, ultrasonic wave grinder or other without medium grinder；
(2) it after flying dust enters the grinding storehouse of no medium grinder, through overbump, shears, roll, grind and crush, pass through
The swabbing action of centrifugal high pressure fan brings the powder after grinding in powder concentrator into, and the fine powder for reaching fineness requirement is passed through with air-flow
Powder classifier blade enters the depickling reaction tower of flue gas of refuse burning processing system or depickling reaction tower be exported to deduster import it
Between air hose in, the coarse granule material that fineness requirement is not achieved is chosen to return to grinding storehouse after the interception of powder machine blade is thrown away and continues to grind
Mill；
Ranging from 5~50 μm of the particle size of fly ash for reaching fineness requirement；
(3) when flying dust is ground, phosphate is added into no medium grinder with precondition heavy metal, the follow-up depickling medicine of reduction
Agent usage amount, and grind -aiding effect can be played；Meanwhile strong oxidizer is added into no medium grinder, play desulphurization denitration and rush
The effect decomposed into dioxin；
The phosphate is orthophosphates, dihydric phosphate, phosphoric acid hydrogen disalt, tripolyphosphate, hexametaphosphate, burnt phosphorus
One or more of combinations of hydrochlorate；
The strong oxidizer be potassium permanganate, SODIUM PERCARBONATE, sodium perborate, persulfate, potassium bichromate, chlorate one
Kind or several combinations.
The invention has the advantages and positive effects that：
(1) present invention is in the defeated grey equipment outlet installation part flow arrangement of deduster and flowmeter, can flexibly control loop fly
Ash quantity, flying dust, which enters after grinder, to carry out continuous-flow type crushing, aspirates, selects powder, cycle, realizes continuous industrial metaplasia
Production.
(2) can be by the overburden stripping of particle surface using crushing grinding technology, while making part calcium hydroxide particle
Further fragmentation is obtained, to expose a large amount of fresh hydrooxidation calcium, for further absorption and reaction removing pollutant wound
Make necessary condition.The method is remarkably improved the utilization rate of calcium hydroxide in incineration of refuse flyash to 80% or more, reduces flying dust
Yield and intractability.
(3) using no medium milling can to avoid flying dust reunite abrasive media or be bonded on grinder inner wall influence grind
Grind effect, in conjunction with select powder function ensure grinding after fine powder uniform particle sizes and keep in a certain range, fully expose unreacted
Calcium hydroxide, increase flying dust specific surface area.
(4) phosphate can be used as grinding aid in flying dust process of lapping, and make it is levigate after flying dust it is prevented from caking, recycling
Adherency and accumulation of the flying dust on tower body, tube wall, filter bag can be reduced after into smoke processing system, reduce system resistance, effectively
Avoid the generation of equipment blocking accident；Meanwhile phosphate is alternatively arranged as inorganic heavy metal stabilizer, in flying dust process of lapping,
Can most of heavy metal ion more uniformly be transformed into the residual form that can exist stably for a long time in ash surface, with mine
Object form fixing-stable, solubility reduce, it is difficult to reenter the ecosystem；When cycle flying dust enters smoke processing system,
Phosphate can play the role of the heavy metal in flue gas pre- trapping passivation, can reduce stabilizer in follow-up stabilizing fly ash chemical industry sequence
Dosage；In addition, phosphate belongs to alkaline matter, it can be with the acid contaminant SO in flue gasx、HCl、NOxNeutralization reaction occurs, it will
Mitigate semidry method depickling pressure, reduces lime white discharge rate.
(5) decomposition of dioxin can be promoted by strong oxidizer being added in flying dust process of lapping, and excessive strong oxidizer is with grinding
After flying dust afterwards is recycled back to smoke processing system, NO in flue gas can be promoted to be converted into NO2, SO2It is converted into SO3, NO2And SO3It is more easy to
It is dissolved in water or is reacted with alkali, promote the desulphurization denitration of smoke processing system.
Description of the drawings
Fig. 1 is domestic garbage incineration flyash utilization process route map.
Specific embodiment
Embodiment 1
(1) it in the defeated grey equipment outlet installation part flow arrangement of the deduster of flue gas of refuse burning processing system and flowmeter, adjusts
The flying dust quality and discharge into the flying dust into flying dust repository outside that the aperture control loop of section part flow arrangement enters in connected superfine pulverizer
Mass ratio is 1: 5；
(2) it after flying dust enters the grinding storehouse of connected superfine pulverizer, through overbump, shears, roll, grind and crush, pass through height
The swabbing action of pressure centrifugal blower brings the powder after grinding in powder concentrator into, and fineness requirement reaches 5~50 μm of fine powder with gas
The coarse granule of fineness requirement is not achieved in the depickling reaction tower that powder classifier blade enters flue gas of refuse burning processing system in stream
Material returns to grinding storehouse after being thrown away by powder classifier blade interception continues to grind；
(3) when flying dust is ground, dihydric phosphate is added into connected superfine pulverizer with precondition heavy metal, the follow-up depickling of reduction
Pharmaceutical use, and grind -aiding effect can be played；Meanwhile potassium permanganate being added into superfine mill, play desulphurization denitration and rush
The effect decomposed into dioxin.
Conclusion：Lime white discharge rate before flying dust cycle than reducing about 8%.Flue gas acid contaminant and dioxin testing result
As shown in table 1, well below《Dangerous waste incineration contamination control standard》The requirement of (GB 18484-2001).
1 flue gas acid contaminant of table and dioxin testing result
| Testing index | Numerical value (mg/m before flying dust cycle3) | Numerical value (mg/m after flying dust cycle3) |
| Carbon monoxide | 82 | 60 |
| Sulfur dioxide | 105 | 91 |
| Hydrogen fluoride | ＜ 0.03 | ＜ 0.03 |
| Hydrogen chloride | 5.3 | 4.2 |
| Nitrogen oxides | 79 | 81 |
| Dioxin ng TEQ/m3 | 0.045 | 0.021 |
Embodiment 2
(1) it in the defeated grey equipment outlet installation part flow arrangement of the deduster of flue gas of refuse burning processing system and flowmeter, adjusts
The flying dust quality and discharge into the flying dust matter into flying dust repository outside that the aperture control loop of section part flow arrangement enters in Raymond mill
Amount ratio is 1: 1；
(2) it after flying dust enters the grinding storehouse of Raymond mill, through overbump, shears, roll, grind and crush, pass through high pressure
The swabbing action of centrifugal blower brings the powder after grinding in powder concentrator into, and fineness requirement reaches 30~50 μm of fine powder with air-flow
The depickling reaction tower for entering flue gas of refuse burning processing system across powder classifier blade is exported to air hose deduster import
In, the coarse granule material that fineness requirement is not achieved is chosen to return to grinding storehouse after the interception of powder machine blade is thrown away and continues to grind；
(3) when flying dust is ground, hexametaphosphate is added into Raymond mill with precondition heavy metal, the follow-up depickling medicine of reduction
Agent usage amount, and grind -aiding effect can be played；Meanwhile sodium perborate being added into Raymond mill, play desulphurization denitration and promotion two
Dislike the effect of scruple solution.
Conclusion：Lime white discharge rate before flying dust cycle than reducing about 15%.Flue gas acid contaminant and dioxin detection knot
Fruit is as shown in table 2, well below《Dangerous waste incineration contamination control standard》The requirement of (GB 18484-2001).
2 flue gas acid contaminant of table and dioxin testing result
| Testing index | Numerical value (mg/m before flying dust cycle3) | Numerical value (mg/m after flying dust cycle3) |
| Carbon monoxide | 94 | 73 |
| Sulfur dioxide | 113 | 96 |
| Hydrogen fluoride | ＜ 0.03 | ＜ 0.03 |
| Hydrogen chloride | 6.4 | 4.8 |
| Nitrogen oxides | 95 | 87 |
| Dioxin ng TEQ/m3 | 0.038 | 0.016 |
Claims (6)
1. a kind of domestic garbage incineration flyash circulation utilization method, step are：
(1) in the defeated grey equipment outlet installation part flow arrangement of the deduster of flue gas of refuse burning processing system and flowmeter, by dedusting
The part flying dust of device trapping is diverted in no medium grinder, and the aperture control loop by adjusting part flow arrangement enters no medium
In grinder the quality of flying dust and the flying dust quality into flying dust repository is discharged into outside；
(2) it after flying dust enters the grinding storehouse of no medium grinder, through overbump, shears, roll, grind and crush, pass through high pressure
The swabbing action of centrifugal blower brings the powder after grinding in powder concentrator into, reaches the fine powder of fineness requirement and is passed through with air-flow and selects powder
Machine blade enters the depickling reaction tower of flue gas of refuse burning processing system or depickling reaction tower is exported between deduster import
In air hose, the coarse granule material that fineness requirement is not achieved is chosen to return to grinding storehouse after the interception of powder machine blade is thrown away and continues to grind；
(3) when flying dust is ground, phosphate is added into no medium grinder to be made with precondition heavy metal, the follow-up depickling medicament of reduction
Dosage, and play grind -aiding effect；Meanwhile strong oxidizer is added into no medium grinder, play desulphurization denitration and promotes two to dislike
The effect of scruple solution.
2. a kind of domestic garbage incineration flyash circulation utilization method told according to claim 1, it is characterized in that：It is described recycle into
Enter the flying dust quality in no medium grinder and discharges into the flying dust mass ratio into flying dust repository outside 1: 5-2: 1.
3. a kind of domestic garbage incineration flyash circulation utilization method told according to claim 1, it is characterized in that：The no medium
Grinder is connected superfine pulverizer, Raymond mill or ultrasonic wave grinder.
4. a kind of domestic garbage incineration flyash circulation utilization method told according to claim 1, it is characterized in that：It is described to reach thin
Spend ranging from 5~50 μm desired of particle size of fly ash.
5. a kind of domestic garbage incineration flyash circulation utilization method told according to claim 1, it is characterized in that：The phosphate
For orthophosphates, dihydric phosphate, phosphoric acid hydrogen disalt, tripolyphosphate, hexametaphosphate, pyrophosphate it is one or more of
Combination.
6. a kind of domestic garbage incineration flyash circulation utilization method told according to claim 1, it is characterized in that：The Strong oxdiative
Agent is one or more of combinations of potassium permanganate, SODIUM PERCARBONATE, sodium perborate, persulfate, potassium bichromate, chlorate.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777345A (en) * | 2020-07-17 | 2020-10-16 | 长沙紫宸科技开发有限公司 | Method for co-processing waste incineration fly ash by using cement kiln |
| CN111777344A (en) * | 2020-07-17 | 2020-10-16 | 长沙紫宸科技开发有限公司 | Method for treating waste incineration fly ash as admixture by cooperation of cement kiln |
| CN111807732A (en) * | 2020-07-22 | 2020-10-23 | 长沙紫宸科技开发有限公司 | Method for cooperatively treating hazardous waste containing organic solids in cement kiln to replace tailings |
| CN112605097A (en) * | 2020-11-30 | 2021-04-06 | 宝武集团环境资源科技有限公司 | Pretreatment method and harmless treatment process of incineration fly ash or sintering ash |
| CN115779648A (en) * | 2022-11-07 | 2023-03-14 | 北京首创环境科技有限公司 | Device and method for flue gas deacidification by waste incineration fly ash recycling through semidry method |
| CN115779658A (en) * | 2022-11-07 | 2023-03-14 | 北京首创环境科技有限公司 | Fly ash-slaked lime composite slurry desulfurizer as well as preparation method and application thereof |
| CN116511222A (en) * | 2023-05-26 | 2023-08-01 | 重庆三峰环境集团股份有限公司 | Fly ash activation and reuse method and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695832A (en) * | 2005-04-29 | 2005-11-16 | 清华大学 | Method for stabilizing flying ash from burn by using soluble medicament of phosphate |
| JP2007222800A (en) * | 2006-02-24 | 2007-09-06 | Taiheiyo Cement Corp | Apparatus and method for removing unburnt carbon in fly ash |
| CN101357368A (en) * | 2007-08-03 | 2009-02-04 | 淡江大学 | Heavy metal stabilization method in garbage incineration ash |
| CN103203166A (en) * | 2012-01-12 | 2013-07-17 | 北京化工大学 | Technology for efficiently removing NOx pollutants in smoke |
| CN103551358A (en) * | 2013-09-30 | 2014-02-05 | 天津壹鸣环境工程有限公司 | Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system |
| CN204051428U (en) * | 2014-09-30 | 2014-12-31 | 重庆中科环保产业有限公司 | A kind of waste incineration dry method fly ash re-injection system |
| CN105013798A (en) * | 2015-07-01 | 2015-11-04 | 浙江大学 | Method and system for treating fly ash in manner combining mechanochemistry and washing, with characteristics of high efficiency, low cost and zero harm |
| CN106693629A (en) * | 2017-02-28 | 2017-05-24 | 重庆三峰环境产业集团有限公司 | System and method for reducing output of waste incineration fly ash |
-
2017
- 2017-12-29 CN CN201711500606.1A patent/CN108273825B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695832A (en) * | 2005-04-29 | 2005-11-16 | 清华大学 | Method for stabilizing flying ash from burn by using soluble medicament of phosphate |
| JP2007222800A (en) * | 2006-02-24 | 2007-09-06 | Taiheiyo Cement Corp | Apparatus and method for removing unburnt carbon in fly ash |
| CN101357368A (en) * | 2007-08-03 | 2009-02-04 | 淡江大学 | Heavy metal stabilization method in garbage incineration ash |
| CN103203166A (en) * | 2012-01-12 | 2013-07-17 | 北京化工大学 | Technology for efficiently removing NOx pollutants in smoke |
| CN103551358A (en) * | 2013-09-30 | 2014-02-05 | 天津壹鸣环境工程有限公司 | Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system |
| CN204051428U (en) * | 2014-09-30 | 2014-12-31 | 重庆中科环保产业有限公司 | A kind of waste incineration dry method fly ash re-injection system |
| CN105013798A (en) * | 2015-07-01 | 2015-11-04 | 浙江大学 | Method and system for treating fly ash in manner combining mechanochemistry and washing, with characteristics of high efficiency, low cost and zero harm |
| CN106693629A (en) * | 2017-02-28 | 2017-05-24 | 重庆三峰环境产业集团有限公司 | System and method for reducing output of waste incineration fly ash |
Non-Patent Citations (2)
| Title |
|---|
| 姜涛: "《烧结球团生产技术手册》", 30 June 2014, 冶金工业出版社 * |
| 赵由才: "《生活垃圾处理与资源化技术手册》", 31 May 2007, 冶金工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777345A (en) * | 2020-07-17 | 2020-10-16 | 长沙紫宸科技开发有限公司 | Method for co-processing waste incineration fly ash by using cement kiln |
| CN111777344A (en) * | 2020-07-17 | 2020-10-16 | 长沙紫宸科技开发有限公司 | Method for treating waste incineration fly ash as admixture by cooperation of cement kiln |
| CN111777344B (en) * | 2020-07-17 | 2022-04-22 | 长沙紫宸科技开发有限公司 | Method for treating waste incineration fly ash as admixture by cooperation of cement kiln |
| CN111807732A (en) * | 2020-07-22 | 2020-10-23 | 长沙紫宸科技开发有限公司 | Method for cooperatively treating hazardous waste containing organic solids in cement kiln to replace tailings |
| CN112605097A (en) * | 2020-11-30 | 2021-04-06 | 宝武集团环境资源科技有限公司 | Pretreatment method and harmless treatment process of incineration fly ash or sintering ash |
| CN115779648A (en) * | 2022-11-07 | 2023-03-14 | 北京首创环境科技有限公司 | Device and method for flue gas deacidification by waste incineration fly ash recycling through semidry method |
| CN115779658A (en) * | 2022-11-07 | 2023-03-14 | 北京首创环境科技有限公司 | Fly ash-slaked lime composite slurry desulfurizer as well as preparation method and application thereof |
| CN115779648B (en) * | 2022-11-07 | 2023-10-24 | 北京首创环境科技有限公司 | Device and method for deacidifying flue gas by semi-dry method through recycling waste incineration fly ash |
| CN115779658B (en) * | 2022-11-07 | 2023-10-24 | 北京首创环境科技有限公司 | Fly ash-slaked lime composite slurry desulfurizing agent and preparation method and application thereof |
| CN116511222A (en) * | 2023-05-26 | 2023-08-01 | 重庆三峰环境集团股份有限公司 | Fly ash activation and reuse method and system |
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