CN108261712A - A kind of incineration of refuse flyash curing agent, preparation method and flying dust method of disposal - Google Patents
A kind of incineration of refuse flyash curing agent, preparation method and flying dust method of disposal Download PDFInfo
- Publication number
- CN108261712A CN108261712A CN201810281872.8A CN201810281872A CN108261712A CN 108261712 A CN108261712 A CN 108261712A CN 201810281872 A CN201810281872 A CN 201810281872A CN 108261712 A CN108261712 A CN 108261712A
- Authority
- CN
- China
- Prior art keywords
- incineration
- refuse flyash
- curing agent
- flying dust
- heavy metal
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 94
- 239000010881 fly ash Substances 0.000 title claims abstract description 78
- 239000000428 dust Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 43
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- 239000003381 stabilizer Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 229920000768 polyamine Polymers 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000012895 dilution Substances 0.000 claims description 23
- 238000010790 dilution Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 14
- 230000000996 additive effect Effects 0.000 claims description 14
- 239000010813 municipal solid waste Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 239000002956 ash Substances 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 238000004056 waste incineration Methods 0.000 claims description 2
- 241000372132 Hydrometridae Species 0.000 claims 1
- 230000005284 excitation Effects 0.000 claims 1
- 239000004480 active ingredient Substances 0.000 abstract description 3
- 238000001723 curing Methods 0.000 description 69
- 238000002386 leaching Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 8
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 229910021536 Zeolite Inorganic materials 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 239000010457 zeolite Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 231100000770 Toxic Equivalency Factor Toxicity 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
-
- 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
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
-
- 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
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of incineration of refuse flyash curing agent and preparation method thereof, water is first added in a kettle during preparation, it adds in sodium hydroxide and polyamines solution while stirring again, controlled at 8 12 DEG C, carbon disulfide is added dropwise into reaction kettle, control reactor temperature is no more than 30 DEG C during being added dropwise, after being added dropwise, the reaction was continued 1 2h, standing, insoluble residue is filtered out, obtains heavy metal stabilizer；Again by the heavy metal stabilizer of acquisition and flying dust exciting agent according to mass ratio 1:5 10 condition mixing, obtains flyash curing agent.The present invention solves the problems, such as the stabilized of heavy metal in incineration of refuse flyash；Using the method from gelling, using incineration of refuse flyash as primary raw material, the active ingredient taken full advantage of in flying dust reduces increase-volume ratio, saves landfill space.
Description
Technical field
It is a kind of to rubbish the present invention relates to a kind of incineration of refuse flyash curing agent, preparation method and flying dust method of disposal
The new technology of making fly-ash from incineration harmless and potential resource, belongs to Environmental Chemistry field.
Background technology
The domestic year house refuse amoun of national statistics office data display is 1.9 hundred million tons, and with annual 8%- until 2015
10% speed increases, therefore the landfill soil problem in short supply of China facing sternness.Stop the shared garbage incinerating power plant of China to 2015
220, increased by 40 with respect to 2014, therefore incineration of refuse flyash will also increase year by year.Waste incineration can be real to the maximum extent
It is existing changing waste into resources, minimizing, innoxious, and achieve the purpose that reduce land occupation resource and recycle thermal energy, but rubbish
Rubbish burning can generate a large amount of flying dusts, and flying dust belongs to due to the high Leaching and attachment bioxin of its heavy metal are when high toxic equivalent
In dangerous waste, and high temperature incineration changes Heavy Metals, it is made to be converted into form more easy to migrate, if not handling progress
Landfill utilizes and will generate significant damage to environment.Incineration of refuse flyash is defined as dangerous solid by multiple countries of the world at present and gives up
Gurry, therefore how to dispose the problem of incineration of refuse flyash also becomes whole world concern.
At present, following three kind method is mainly taken the disposition of incineration of refuse flyash both at home and abroad：1st, fusing fly ash technology；2、
Chemical stabilization technology；3rd, cement solidification/stabilization technology.Fusing fly ash technology is mainly used in day in three of the above technology
This, is not widely popularized because its economic effect is bad.Predominantly cement solidification/stabilisation skill that the country mainly uses at present
The method that art and chemical stabilization technology share, heavy metal effect is preferable in this technical finesse flying dust, but brings larger increase-volume
Problem, and the firming body finally obtained will still fill dangerous waste landfill yard, and landfill cost is higher.In view of problem above is current
A large number of researchers are making great efforts to research and develop a kind of curing medicament that need not add cement.Existing researcher is by adding hydroxide at present
The pharmaceutical productions such as sodium, phosphate, EDTA are into different curing medicaments, but there are two shortcomings for such medicament tool：1st, sample after curing
Intensity is not good enough；2nd, heavy metals immobilization rate is subject to certain restrictions.Molding can both be met by researching and developing one kind based on problem above present inventor
It is required that while there is the curing medicament compared with high solidification efficiency to heavy metal.
Invention content
In view of above feature, the object of the present invention is to provide a kind of incineration of refuse flyash curing agent, preparation method and flying dusts
Method of disposal while acquisition solidification intensity high cured block, improves heavy metals immobilization efficiency.
In order to solve the above-mentioned technical problem, technical scheme is as follows：A kind of incineration of refuse flyash curing agent, it is special
Sign is, including heavy metal stabilizer and flying dust exciting agent, the mass ratio of the heavy metal stabilizer and flying dust exciting agent is 1:
5-10, the skeleton symbol of the heavy metal stabilizer are：
Wherein, R is alkyl, and n is positive integer.
In the present invention, heavy metal stabilizer is a kind of organic compound, such organic compound has polyamines structure.This kind
Compound with polyamines structure can more effectively cure different types of heavy metal, and simultaneously synthesizing heavy metal stabilizer is also
The intensity of curing system can be improved, reduces the porosity of firming body, improves solidification effect.
Preferably, R is one kind in methyl, ethyl, propyl.
The mass ratio of the heavy metal stabilizer and flying dust exciting agent is 1:8.
The preparation method of incineration of refuse flyash curing agent as described above, includes the following steps：
（1）Water is first added in a kettle, then adds in sodium hydroxide and polyamines solution while stirring, controlled at 8-12 DEG C,
Carbon disulfide is added dropwise into reaction kettle, control reactor temperature is no more than 30 DEG C, after being added dropwise during being added dropwise, and continues anti-
1-2h is answered, is stood, filters out insoluble residue, obtains heavy metal stabilizer；
Wherein, the mass ratio of water, sodium hydroxide and polyamines solution is 1-4:4.5-7:6-9；
（2）By step（1）The heavy metal stabilizer of middle acquisition is with flying dust exciting agent according to mass ratio 1:The condition mixing of 5-10, is obtained
Obtain flyash curing agent.
Preferably, the sodium hydroxide is technical grade sheet alkali.
Preferably, the main ethylenediamine of the polyamines solution and/or diethylenetriamine are formulated.
Preferably, step（1）In, the mass ratio of water, sodium hydroxide and polyamines solution is 3:6:7；
Further, the mass percentage concentration of polyamines is 25%-35% in polyamines solution；Preferably, in polyamines solution polyamines matter
It is 30% to measure percentage concentration.
Further, step（2）Described in flying dust exciting agent raw material composition include sodium hydroxide and silica.
Preferably, the modulus of the flying dust exciting agent is 1.2-1.5.
Further, the preparation method of the flying dust exciting agent includes the following steps：It is 2-4 in molar ratio:1 condition claims
Sodium hydroxide and silica are taken, is mixed；The sodium hydroxide and silica mixture are placed in autoclave again, in 2-3
Under a atmospheric pressure, carry out steam pressure reaction and flying dust exciting agent is made.
The flying dust exciting agent obtained by the above method, the modulus of wherein sodium silicate liquid is relatively low, for 1.2-1.5, a side
On the other hand face can provide alkaline condition for flying dust hydration reaction and be conducive to effectively to provide certain effective silicon in flying dust
It chemically reacts；In addition, the sodium metasilicate under this modulus can effectively activate heavy metal stabilizer, and provide needed for reaction
Basicity, and can with heavy metal stablize occur centainly react, certain sulphion is discharged, so as to ensure later stage flyash curing
The stability of body.
Preferably, the molar ratio of above-mentioned sodium hydroxide and silica is 3.5:1.
In the present invention, the pH value of incineration of refuse flyash curing agent is 10-12, preferably 11.5.
Incineration of refuse flyash is mainly the dust generated after refuse-burning plant is burnt away the refuse by equipment such as grate furnaces, flying dust
In contain largely harmful inorganic matters（Bioxin, furans etc.）And plurality of heavy metal（Pb, Zn etc.）.
The flying dust main component and mass percent are CaO250.45%-60.43%、SiO22.37%-7.93%、
Al2O30.32%-1.06%、Na2O3.32%-6.73%、MgO1.85%-3.62%、Fe2O31.23%-2.43%、K2O2.43%-
5.79%。
Since incineration of refuse flyash physicochemical property causes general firming body that the cementitious materials such as addition cement is needed to can be only achieved
Certain landfill intensity, thus the flying dust after curing there are increase-volume than it is big the problem of.Main object is mutually alumino-silicate, chlorination in flying dust
Object and a small amount of calcium sulfate.The flying dust exciting agent of the present invention can effectively destroy alumino-silicate and silicon dioxide structure, make itself and addition
Exciting agent form 3d space network body, and flying dust exciting agent provides certain alkaline environment, this environment can be accelerated in flying dust
Other active principles are dissolved, and improve network body synthesis speed.With villaumite certain chemical reaction shape occurs for the network body of formation
It is zeolite structured that there is preferable mechanical performance into zeolite structured, while zeolite structured can effectively adsorb in incineration of refuse flyash
Heavy metal composition, so as to preferably stablize flying dust in heavy metal.The intensity of firming body is improved by adding flying dust exciting agent
With curing heavy metal, the increase-volume ratio of firming body can be not only reduced, and utilized for late resourceization and certain basis is provided.
Further, step（2）The mass ratio of middle heavy metal stabilizer and flying dust exciting agent is 1:8.
Heavy metal stabilizer main component is thiocarboxylic acid class group in the present invention, and such group can effectively capture flying dust
Middle heavy metal component, particularly lead and zinc composition.And the phosphate composition added in the present invention can further occur with lead and zinc
Chemical reaction generates the salt of indissoluble.Heavy metal stabilizer can be used in mixed way with flying dust exciting agent in the present invention, and can promote to fly
Certain gelling reaction occurs for ash, forms 3d space network body.
Based on same inventive concept, rubbish is disposed using above-mentioned incineration of refuse flyash curing agent the present invention also provides a kind of
The method of rubbish flying ash, includes the following steps：
（1）Incineration of refuse flyash, incineration of refuse flyash curing agent and water are stirred, mixing obtains flying dust pulp material；
（2）Flying dust pulp material is conserved, obtains incineration of refuse flyash cured block.
Preferably, step（1）In, first water is mixed with incineration of refuse flyash curing agent, obtains curing agent dilution, then will be solid
Agent dilution is mixed with incineration of refuse flyash, obtains flying dust pulp material.
Further, step（1）The additive amount of middle incineration of refuse flyash curing agent is the 3-8% of incineration of refuse flyash quality.
Preferably 5%.
Further, step（1）The additive amount of middle water is the 28-35% of incineration of refuse flyash quality.Preferably 30%.
Further, step（1）Middle mixing time is 1.5-3min.Preferably 2min.
Further, step（2）Middle curing time is 1-3 days.
Cured block strength-enhancing effect unobvious when incineration of refuse flyash curing agent addition is more than 8% in the present invention, and
Financial cost is increased, firming body intensity declines apparent when less than 3%, and the leaching concentration of heavy metal increases.When the addition of water
When amount is more than 35%, firming body intensity is substantially reduced, and incineration of refuse flyash can not come into full contact with curing agent during less than 28%, lead
Cause firming body later stage Leaching can not be up to standard.It is obtained by explorative experiment when curing agent additive amount is 5%, water additive amount is 30%
Shi Xiaoguo is preferable.
The curing agent used in the present invention can meet the stabilized problem of heavy metal, at the same can reduce flyash curing into
Originally and increase-volume ratio is reduced, and certain preparation is done for later stage flying dust recycling, has fully demonstrated the new approaches of waste's reclamation.
Active ingredient in incineration of refuse flyash is made full use of to substitute traditional cement solidification incineration of refuse flyash scheme, reduce increase-volume than
The solidification effect of heavy metal is improved simultaneously；Using natural maintenance process, it can promote villaumite in flying dust that chemistry further occurs instead
Should, generate the zeolite structured performance for improving firming body.
The incineration of refuse flyash handled in the present invention includes but not limited to garbage incinerating power plant and burns away the refuse through grate furnace
The flying dust generated afterwards.
Compared with prior art, beneficial effects of the present invention are as follows：
（1）Different types of heavy metal can more effectively be cured, the stabilized of heavy metal in incineration of refuse flyash is solved and ask
Topic；
（2）Solidification effect is good, and the porosity of firming body can be reduced while firming body intensity is improved,
（3）Using the method from gelling, using incineration of refuse flyash as primary raw material, the active ingredient drop in flying dust is taken full advantage of
Low increase-volume ratio saves landfill space.
Description of the drawings
Fig. 1 is a kind of system for handling incineration of refuse flyash of the present invention.
Figure exists, 1- tap water hold-up tanks, 2- curing agent dilution hold-up tanks, 3- incineration of refuse flyash storage warehouses, 4- curings
Developing agent storage tank, 5- machine,massings, 6- conveyer belts, 7- transport vehicles.
Specific embodiment
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention can be combined with each other.
Embodiment 1
The present embodiment incineration of refuse flyash curing agent and method of disposal, concrete operations are as follows：
Incineration of refuse flyash stored by bag collection it is spare into incineration of refuse flyash storage warehouse 3, by water and curing agent（With much money
Belong to stabilizer：Flying dust exciting agent=1:8）It is 6 in mass ratio:It is added in curing agent dilution hold-up tank 2 and carries out under conditions of 1
Mixing for standby use is stirred homogenizing, and mixing time is 30 seconds, obtains curing agent dilution；The curing agent dilution that will be prepared
It is added in mixing chamber simultaneously with incineration of refuse flyash, the additive amount of curing agent dilution is the 35% of quality of material.To mixture
Material is stirred 2min, and flying dust pulp material is made；Material after pulp carries out molding disposition, and curing condition is natural curing 3
It is to get to incineration of refuse flyash firming body；And carry out intensity and toxic leaching test by national standard.
Curing agent dilution preparation process：It is first 1 in mass ratio by heavy metal stabilizer and flying dust exciting agent:8 are configured to
Curing agent mother liquor, then according to 30% that the additive amount of water is incineration of refuse flyash quality, curing agent additive amount is flying dust quality
5%, it is prepared, the curing agent dilution after preparation is spare.
Detected intensities are shown：3 days intensity of cured block is satisfied by wanting into refuse landfill 0.35MPa for 2.3Mpa
It asks.
Toxicity leaches testing result and shows：The leaching concentration of lead is 0.85mg/L in flying dust, and the leaching of the lead after curing is dense
0.13mg/L is spent, Leaching is less than national standard《Household refuse landfill sites contamination control standard》(GB16889-2008) it is poisoned
Property leach standard≤0.25mg/L, can security landfill in household refuse landfill sites；Compared to landfill in dangerous waste landfill yard, cost is significantly
It reduces.
Embodiment 2
The present embodiment incineration of refuse flyash curing agent and method of disposal, concrete operations are as follows：
Incineration of refuse flyash stored by bag collection into feed bin it is spare, by water and curing agent（Heavy metal stabilizer：Flying dust swashs
Send out agent=1:8）It is 15 in mass ratio:It is added under conditions of 4 in curing agent dilution hold-up tank and carries out mixing for standby use, stirred
Homogenizing is mixed, mixing time is 30 seconds, obtains curing agent dilution；The curing agent dilution prepared and incineration of refuse flyash is same
When be added in mixing chamber, the additive amount of curing agent dilution is the 38% of quality of material.2min is stirred to mixed material,
Flying dust pulp material is made；Material after pulp carries out molding disposition, and curing condition is burnt for 3 days for natural curing to get to rubbish
Burn flyash curing body；And carry out intensity and toxic leaching test by national standard.
Curing agent dilution preparation process：It is first 1 in mass ratio by heavy metal stabilizer and flying dust exciting agent:8 are configured to
Curing agent mother liquor, then according to 30% that the additive amount of water is incineration of refuse flyash quality, curing agent additive amount is flying dust quality
8%, it is prepared, the curing agent dilution after preparation is spare.
Detected intensities are shown：3 days intensity of cured block is satisfied by wanting into refuse landfill 0.35MPa for 1.8Mpa
It asks, but moisture content is higher, is not suitable for entering landfill yard.
Toxicity leaches testing result and shows：The leaching concentration of lead is 0.85mg/L in flying dust, and the leaching of the lead after curing is dense
0.08mg/L is spent, Leaching is less than national standard《Household refuse landfill sites contamination control standard》(GB16889-2008) it is poisoned
Property leach standard≤0.25mg/L, can security landfill in household refuse landfill sites.
Embodiment 3
The present embodiment incineration of refuse flyash curing agent and method of disposal, concrete operations are as follows：
Incineration of refuse flyash stored by bag collection into feed bin it is spare, by water and curing agent（Heavy metal stabilizer：Flying dust swashs
Send out agent=1:8）It is 10 in mass ratio:It is added under conditions of 1 in curing agent dilution hold-up tank and carries out mixing for standby use, stirred
Homogenizing is mixed, mixing time is 30 seconds, obtains curing agent dilution；The curing agent dilution prepared and incineration of refuse flyash is same
When be added in mixing chamber, the additive amount of curing agent dilution is the 33% of quality of material.2min is stirred to mixed material,
Flying dust pulp material is made；Material after pulp carries out molding disposition, and curing condition is burnt for 3 days for natural curing to get to rubbish
Burn flyash curing body；And carry out intensity and toxic leaching test by national standard.
Curing agent dilution preparation process：It is first 1 in mass ratio by heavy metal stabilizer and flying dust exciting agent:8 are configured to
Curing agent mother liquor, then according to 30% that the additive amount of water is incineration of refuse flyash quality, curing agent additive amount is flying dust quality
3%, it is prepared, the curing agent dilution after preparation is spare.
Detected intensities are shown：3 days intensity of cured block is satisfied by wanting into refuse landfill 0.35MPa for 1.2Mpa
It asks.
Toxicity leaches testing result and shows：The leaching concentration of lead is 0.85mg/L in flying dust, and the leaching of the lead after curing is dense
0.23mg/L is spent, Leaching is less than national standard《Household refuse landfill sites contamination control standard》(GB16889-2008) it is poisoned
Property leach standard≤0.25mg/L, can security landfill in household refuse landfill sites.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the invention, after the present invention has been read, those skilled in the art are to the various equivalent forms of the present invention
Modification each fall within the application range as defined in the appended claims.
Claims (10)
1. a kind of incineration of refuse flyash curing agent, which is characterized in that including heavy metal stabilizer and flying dust exciting agent, the huge sum of money
The mass ratio for belonging to stabilizer and flying dust exciting agent is 1:5-10, the skeleton symbol of the heavy metal stabilizer are：
Wherein, R is alkyl, and n is positive integer.
2. incineration of refuse flyash curing agent according to claim 1, which is characterized in that the heavy metal stabilizer and flying dust
The mass ratio of exciting agent is 1:8.
3. the preparation method of incineration of refuse flyash curing agent as claimed in claim 1 or 2, which is characterized in that including walking as follows
Suddenly：
（1）Water is first added in a kettle, then adds in sodium hydroxide and polyamines solution while stirring, controlled at 8-12 DEG C,
Carbon disulfide is added dropwise into reaction kettle, control reactor temperature is no more than 30 DEG C, after being added dropwise during being added dropwise, and continues anti-
1-2h is answered, is stood, filters out insoluble residue, obtains heavy metal stabilizer；
Wherein, the mass ratio of water, sodium hydroxide and polyamines solution is 1-4:4.5-7:6-9；
（2）By step（1）The heavy metal stabilizer of middle acquisition is with flying dust exciting agent according to mass ratio 1:The condition mixing of 5-10, is obtained
Obtain flyash curing agent.
4. the preparation method of incineration of refuse flyash curing agent according to claim 3, which is characterized in that step（2）Middle institute
The raw material composition for stating flying dust exciting agent includes sodium hydroxide and silica.
5. the preparation method of incineration of refuse flyash curing agent according to claim 3, which is characterized in that the flying dust excitation
The preparation method of agent includes the following steps：It is 2-4 in molar ratio:1 condition weighs sodium hydroxide and silica, mixing；Again
The sodium hydroxide and silica mixture are placed in autoclave, under 2-3 atmospheric pressure, carry out steam pressure reaction system
Obtain flying dust exciting agent.
6. using the incineration of refuse flyash curing agent described in claims 1 or 22 or utilize claim 3-5 any one of them
The method of incineration of refuse flyash curing agent disposition incineration of refuse flyash prepared by method, which is characterized in that include the following steps：
（1）Incineration of refuse flyash, incineration of refuse flyash curing agent and water are stirred, mixing obtains flying dust pulp material；
（2）Flying dust pulp material is conserved, obtains incineration of refuse flyash cured block.
7. the method for disposition incineration of refuse flyash according to claim 6, which is characterized in that step（1）In, first water and rubbish
Rubbish flying ash curing agent mixes, and obtains curing agent dilution, then curing agent dilution is mixed with incineration of refuse flyash, obtains
Flying dust pulp material.
8. the method for disposition incineration of refuse flyash according to claim 6, which is characterized in that step（1）Middle waste incineration
The additive amount of flyash curing agent is the 3-8% of incineration of refuse flyash quality.
9. the method for disposition incineration of refuse flyash according to claim 6, which is characterized in that step（1）The addition of middle water
Measure the 28-35% for incineration of refuse flyash quality.
10. the method for disposition incineration of refuse flyash according to claim 6, which is characterized in that step（1）Middle mixing time
For 1.5-3min.
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| CN111420966A (en) * | 2020-03-25 | 2020-07-17 | 常州大学 | Method for treating heavy metal in stable fly ash of N-30 alkaline silica sol |
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| CN114602952A (en) * | 2020-12-09 | 2022-06-10 | 陕西青朗万城环保科技有限公司 | Fly ash harmless treatment method and control system thereof |
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| CN112871957A (en) * | 2020-12-28 | 2021-06-01 | 南京国兴环保产业研究院有限公司 | Method for solidifying waste incineration fly ash by matching sodium phosphate with calcium aluminate cement |
| CN112972976A (en) * | 2021-02-05 | 2021-06-18 | 南京理工大学 | Method for co-processing solid-liquid phase product of fly ash coal ash hydrothermal reaction |
| CN113102450A (en) * | 2021-03-31 | 2021-07-13 | 湖南军信环保股份有限公司 | Method for treating and safely burying waste incineration fly ash |
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