CN107265470A - Cinder from refuse incineration hydro-thermal method heavy metal antihunt means - Google Patents
Cinder from refuse incineration hydro-thermal method heavy metal antihunt means Download PDFInfo
- Publication number
- CN107265470A CN107265470A CN201710457189.0A CN201710457189A CN107265470A CN 107265470 A CN107265470 A CN 107265470A CN 201710457189 A CN201710457189 A CN 201710457189A CN 107265470 A CN107265470 A CN 107265470A
- Authority
- CN
- China
- Prior art keywords
- hydro
- heavy metal
- cinder
- thermal
- incineration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/24—Alkaline-earth metal silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
Abstract
The invention discloses a kind of cinder from refuse incineration hydro-thermal method heavy metal antihunt means, comprise the following steps：1) pre-process：All flying dusts produced will be burned and the weight content of calcium, silicon and aluminium element in incineration residue, detection incineration residue is obtained after the mixing of all bottom ash；2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and the molar content ratio for calcium, silicon and the aluminium element allocated in combination ash is met：n(CaO)/n(SiO2+AlO1.5)=0.60 1.73, n (AlO1.5)/n(SiO2+AlO1.5)=0 0.31；3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and alkali-activator is added into hydrothermal reaction kettle, progress is thoroughly mixed and excites activation 6 12 hours；Then it is warming up to Temperature fall after the completion of 150 200 DEG C of hydro-thermal reactions, hydro-thermal reaction；4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.The technical purpose of stable flying dust and the heavy metal in bottom ash can be realized simultaneously, and there is good stablizing effect, efficiency high and non-secondary pollution.
Description
Technical field
It is specifically a kind of cinder from refuse incineration hydro-thermal method heavy metal the invention belongs to the processing technology field of solid waste
Antihunt means.
Background technology
Burning method has turned into the processing method that rubbish is generally used, compared to other waste treatment methods, such as landfill method, compost
Method etc., burning method can reduce Waste volume 90%, reduction quality 60-70%.In addition, burning method can decompose poisonous, harmful
Discarded object changes into nontoxic, harmless simple compounds, while energy resources can be reclaimed effectively, its heat produced can be used for
It is the optimal selection for handling house refuse, medical waste etc. for heat and generating power.
Cinder from refuse incineration is broadly divided into flying dust and bottom ash.Because flying ash has a complicated surface characteristic, absorption and
Form harmful heavy metal material such as Zn, Pb, Cd, Cr, Cu, Ni and Hg of easy leaching of high level etc. and high concentration is solvable
Property salts substances, typical composition analysis is such as (the domestic garbage incineration flyash data source of table 1：He Pingjin et al.,
Journal of Hazardous Materials,2004,16(3)：229-237；Medical refuse burning flyash data source：Liu
Fu Yao etc., industry security and environmental protection, 2007,33 (7)：38-39).Because the Leaching of Pb, Zn, Cd etc. in flying dust often show
Write exceeded, therefore《National Hazard waste register》Incineration of refuse flyash has been classified as numbering HW18 danger by (national standard, 2016)
Waste is, it is necessary to which further harmless treatment could enter landfill yard or recycling.Meanwhile, though burn a large amount of bottom ash produced
It is not included in so《National Hazard waste register》In, still, the harmful heavy metal material in bottom ash still containing high level, also such as
(the consumer waste incineration bottom ash data source of table 1：Sun Lushi etc., Central China University of Science and Technology's journal natural science edition, 2009,37 (10)：
124-127；Feng Shaolong etc., University Of Nanhua's journal natural science edition, 2006,20 (3)：1-4；Medical refuse burning bottom ash data are come
Source：Liu Hanqiao etc., Environmental Chemistry, 2009,28 (4)：558-561；Feng great Wei etc., chemical analysis metering, 2012,21 (4)：94-
96) concentration of the heavy metal Pb easily leached, is not only often beyond hazardous waste judging standard value, and bottom ash is under field conditions (factors)
The leaching of other heavy metals can cause certain pollution risk to environment particularly under the conditions of acid rain, therefore, it is also desirable to consider
Harmless treatment is carried out to bottom ash.
The content and Leaching of heavy metal in the flying dust of table 1 and bottom ash
At present, the heavy metal contained in bottom ash have ignored mainly for flying dust to the harmless treatment of cinder from refuse incineration
Pollution problem of the material to environment.And the processing method of disposal for flying ash mainly has cement/bitumen solidification, chemistry at present
Chemical stabilization, high-temperature fusion etc..But traditional flyash cement solidification-landfill method increase-volume ratio is big, needs largely fill places, admittedly
The chemically and physically stability of change body is weak and causes the danger of the dissolution once again such as heavy metal after weathering damage；Inorganic chemicals pair
Heavy metal stabilization effect is poor, and the cost of organic chemistry medicament is high and heavy metal stabilize has certain selectivity, difficult
To realize efficient stable while each heavy metal species；High energy consumption, the processing cost of high-temperature fusion are high.Therefore, develop a kind of new
Synchronization process incineration of refuse flyash and the harmless treat of bottom ash there is extremely important realistic meaning.
Chinese patent such as Publication No. CN106282585A discloses a kind of detoxification classification of domestic garbage incineration flyash
Resource utilization method, comprises the following steps：(1) by domestic garbage incineration flyash and water using mass volume ratio as 1:5-1:20g/
Ml ratio mixing, mixes 0.5-4.0 hours through mechanical agitation and forms mortar；(2) by the mortar obtained in step (1) send into from
Scheming is dehydrated, and isolates the flying dust after water lotion and washing, wherein the flying dust and acid solution after washing are by mass volume ratio
1:5-1:20g/ml ratio mixing, handles 2.0-12.0 hours, obtains detoxification mortar under mechanical stirring；(3) by step (2)
In obtained detoxification mortar carry out mechanically decoupled, pickle and the detoxification flying dust of solid phase are isolated, wherein the detoxification of gained solid phase
Flying dust and consumer waste incineration bottom ash compounding, for preparing water-permeable brick；(4) by the water lotion obtained in step (2) and step (3)
In obtain pickle mixing, using the preconcentration with activated carbon with selective absorption function and purifying noble metal, enrichment and purify
Activated carbon after noble metal is used to reclaim noble metal, and remaining liquid phase is carried out after soluble-salt recovery, and gained water process liquid is returned to
Step mixes recycling with domestic garbage incineration flyash in (1).
The domestic garbage incineration flyash detoxification classification resource utilization method will be washed with water with the flying dust after pickling with not
The detoxification classification resource utilization method that bottom ash mixing compounding through processing prepares water-permeable brick, the i.e. domestic garbage incineration flyash will
Bottom ash have ignored pollution problem of the bottom ash to environment directly as innoxious substance migration.
The content of the invention
In view of this, it is an object of the invention to provide a kind of cinder from refuse incineration hydro-thermal method heavy metal antihunt means, adopt
Realize the technical purpose of the heavy metal in stable flying dust and bottom ash simultaneously with hydro-thermal method, and with stablizing effect is good, efficiency high and
The advantage of non-secondary pollution.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of cinder from refuse incineration hydro-thermal method heavy metal antihunt means, comprise the following steps：
1) pre-process：All flying dusts produced will be burned and incineration residue is obtained after the mixing of all bottom ash, burning ash is detected
The weight content of calcium, silicon and aluminium element in slag；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and
The molar content ratio of calcium, silicon and the aluminium element allocated in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=0.60-1.73
n(AlO1.5)/n(SiO2+AlO1.5)=0-0.31
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and alkali-activator is added into hydrothermal reaction kettle, is filled
Stirring mixing progress is divided to excite activation 6-12 hours；Then it is warming up to nature after the completion of 150-200 DEG C of hydro-thermal reaction, hydro-thermal reaction
Cooling；
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
Further, the sial conditioner is using at least one of flyash, diatomite, kaolin and bentonite.
Further, the step 3) in, the pH=12-14 of the alkali-activator.
Further, the liquid-solid ratio between the alkali-activator and the combination ash is 8-12:1(mL/g).
Further, the alkali-activator is using alkali lye or uses the step 4) in obtained liquid phase alkali lye or use alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding.
Further, the alkali-activator is using alkali lye and the step 4) in obtained liquid phase Alkali liquid compounding follow
The liquid that the alkali lye and volume ratio for being 25%-50% containing volume ratio in ring mixed liquor, and the circulation mixed liquor are 50%-75%
Phase alkali lye.
Further, the alkali lye uses NaOH solution or Na2CO3Solution.
Further, the step 3) in, after the completion of activation is excited, added to hydrothermal reaction kettle after tobermorite crystal seed again
Heating carries out hydro-thermal reaction.
Further, the time of the hydro-thermal reaction is 12-24 hours.
Further, the preparation method of the tobermorite crystal seed is：With amorphous silicon di-oxide, calcium hydroxide and ethylenediamine
Tetraacethyl (EDTA) is raw material；Calcium hydroxide is mixed with EDTA powder first, by liquid-solid ratio 10:1 adds deionized water, adds
KOH regulations pH is 12.0-13.0；Amorphous silicon di-oxide is added, it is 12.0-13.0 that KOH regulations pH is added again, and is controlled
EDTA and Ca in system2+Mol ratio 1.0, Si4+Concentration be that 0.02mol/L, Ca and Si mol ratio is 2.0；Finally shift
Into hydrothermal reaction kettle, heated 5-10 hours with 200 DEG C, it is 11 that the solid phase of generation, which is washed with deionized to pH, then 80
DEG C heat drying 24 hours, ground sieve is prepared.
The beneficial effects of the present invention are：
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present invention, by the way that all flying dusts produced and institute will be burned
There is the incineration residue that bottom ash is mixed to get to be compounded with sial conditioner, carry out calcium, silicon, the accurate allotment of aluminium element, utilize alkalescence
Hydro-thermal method prepares target calcium system aluminosilicate zeolite-tobermorite, using its heavy metal there is extremely strong physical chemistry to inhale
The principles such as attached, ion exchange, physics trapping, thus it is stable while realizing heavy metal in flying dust and bottom ash, and with stable effect
The really advantage of good, efficiency high.
This method passes through the liquid phase alkali lye that obtains hydro-thermal reaction and NaOH or Na2CO3Deng alkali lye be configured to again alkalescence swash
Agent is sent out, recycling for liquid phase alkali lye can be realized, prevents from arranging outside liquid phase alkali lye and producing pollution sources again.Therefore, it is of the invention
Cinder from refuse incineration hydro-thermal method heavy metal antihunt means can realize simultaneously to house refuse, medical waste etc. burn produce institute
Some flying dust and bottom ash carry out efficient harmless treatment, and will not produce pollution sources again, can effectively prevent secondary pollution.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the theory diagram of cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present invention；
Fig. 2 is the XRD material phase analysis results of the cinder from refuse incineration hydrothermal product of embodiment 1；
Fig. 3 is the XRD material phase analysis results of the cinder from refuse incineration hydrothermal product of embodiment 2；
Fig. 4 is the XRD material phase analysis results of the cinder from refuse incineration hydrothermal product of embodiment 3；
Fig. 5 is the XRD material phase analysis results of the cinder from refuse incineration hydrothermal product of embodiment 3.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, comprise the following steps：
1) pre-process：All flying dusts produced will be burned and all bottom ash are ground to particle diameter to mix again after below 80um respectively
Close, obtain the weight content of calcium, silicon and aluminium element in incineration residue, detection incineration residue；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and
The molar content ratio of calcium, silicon and the aluminium element allocated in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=0.60
n(AlO1.5)/n(SiO2+AlO1.5)=0
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and pH=14 alkaline excitations are added into hydrothermal reaction kettle
Agent, is thoroughly mixed progress and excites activation 8 hours；After the completion of activation is excited, 200 DEG C of hydro-thermal reactions are warming up to 24 hours,
Temperature fall after the completion of hydro-thermal reaction；Wherein, the liquid-solid ratio between alkali-activator and combination ash is 10:1(mL/g).
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
Wherein, sial conditioner is using at least one of flyash, diatomite, kaolin and bentonite.The present embodiment
Sial conditioner use kaolin, disclosure satisfy that the ratio requirement of the molar content of calcium in combination ash, silicon and aluminium element.
Further, the alkali-activator is using alkali lye or uses the step 4) in obtained liquid phase alkali lye or use alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding.The alkali-activator of the present embodiment uses alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding, and be containing volume ratio in circulation mixed liquor
25% alkali lye and volume ratio is 75% liquid phase alkali lye.Wherein, alkali lye uses 0.5mol/L NaOH solution.By by hydro-thermal
React obtained liquid phase alkali lye and be configured to alkali-activator again with NaOH alkali lye, recycling for liquid phase alkali lye can be realized,
Prevent from arranging outside liquid phase alkali lye and producing pollution sources again；Meanwhile, using a certain proportion of NaOH solution and liquid phase Alkali liquid compounding alkali
Property exciting agent, ensure that liquid phase alkali lye still is able to keep certain alkalescence after being recycled for multiple times, in order to be able to meet
The technical purpose that persistent loop is used.
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, by will burn produce all flying dusts and
The incineration residue that all bottom ash are mixed to get is compounded with sial conditioner, is carried out calcium, silicon, the accurate allotment of aluminium element, is utilized water
Hot method prepares target calcium system aluminosilicate zeolite-tobermorite, using its heavy metal have extremely strong physical and chemical adsorption,
The principles such as ion exchange, physics trapping, thus it is stable while realizing heavy metal in flying dust and bottom ash, and with stablizing effect
The good, advantage of efficiency high；Therefore, cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the invention can be realized simultaneously to rubbish
Burn all flying dusts produced and bottom ash carries out efficient harmless treatment, and pollution sources will not be produced again, can be effective
Prevent secondary pollution.
Specifically, the present embodiment cinder from refuse incineration is domestic refuse incineration ash, and the incinerator ash of the present embodiment
The XRD material phase analysis result of pulp water hot is as shown in Fig. 2 the Leaching Heavy Metals of cinder from refuse incineration and its hydrothermal product
As shown in table 2.
The Leaching Heavy Metals of the cinder from refuse incineration of table 2 and its hydrothermal product
Embodiment 2
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, comprise the following steps：
1) pre-process：All flying dusts produced will be burned and particle diameter is ground to again after the mixing of all bottom ash for below 80um,
Obtain the weight content of calcium, silicon and aluminium element in incineration residue, detection incineration residue；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and
The molar content ratio of calcium, silicon and the aluminium element allocated in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=1.21
n(AlO1.5)/n(SiO2+AlO1.5)=0.23
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and pH=12 alkaline excitations are added into hydrothermal reaction kettle
Agent, is thoroughly mixed progress and excites activation 12 hours；After the completion of activation is excited, 150 DEG C of hydro-thermal reactions are warming up to 18 hours,
Temperature fall after the completion of hydro-thermal reaction；Wherein, the liquid-solid ratio between alkali-activator and combination ash is 12:1(mL/g).
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
Wherein, sial conditioner is using at least one of flyash, diatomite, kaolin and bentonite.The present embodiment
Sial conditioner use bentonite and diatomaceous mixture, disclosure satisfy that mole of calcium in combination ash, silicon and aluminium element
The ratio requirement of content.
Further, the alkali-activator is using alkali lye or uses the step 4) in obtained liquid phase alkali lye or use alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding.The alkali-activator of the present embodiment uses alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding, and be containing volume ratio in circulation mixed liquor
50% alkali lye and volume ratio is 50% liquid phase alkali lye.Wherein, alkali lye uses 0.2mol/L Na2CO3Solution.By by water
Liquid phase alkali lye and Na that thermal response is obtained2CO3Alkali-activator is configured to again Deng alkali lye, can realize the circulation of liquid phase alkali lye
Utilize, prevent from arranging outside liquid phase alkali lye and producing pollution sources again；Meanwhile, matched somebody with somebody using a certain proportion of NaOH solution with liquid phase alkali lye
Alkali-activator processed, ensure that liquid phase alkali lye still is able to keep certain alkalescence after being recycled for multiple times, in order to be able to
Meet the technical purpose that persistent loop is used.
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, by will burn produce all flying dusts and
The incineration residue that all bottom ash are mixed to get is compounded with sial conditioner, is carried out calcium, silicon, the accurate allotment of aluminium element, is utilized water
Hot method prepares target calcium system aluminosilicate zeolite-tobermorite, using its heavy metal have extremely strong physical and chemical adsorption,
The principles such as ion exchange, physics trapping, thus it is stable while realizing heavy metal in flying dust and bottom ash, and with stablizing effect
The good, advantage of efficiency high；Therefore, cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the invention can be realized simultaneously to rubbish
Burn all flying dusts produced and bottom ash carries out efficient harmless treatment, and pollution sources will not be produced again, can be effective
Prevent secondary pollution.
Specifically, the present embodiment cinder from refuse incineration is domestic refuse incineration ash, and the incinerator ash of the present embodiment
The XRD material phase analysis result of pulp water hot is as shown in figure 3, the Leaching Heavy Metals of cinder from refuse incineration and its hydrothermal product
As shown in table 3.
The Leaching Heavy Metals of the cinder from refuse incineration of table 3 and its hydrothermal product
Embodiment 3
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, comprise the following steps：
1) pre-process：All flying dusts produced will be burned and all bottom ash are ground to particle diameter to mix again after below 80um respectively
Close, obtain the weight content of calcium, silicon and aluminium element in incineration residue, detection incineration residue；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and
The molar content ratio of calcium, silicon and the aluminium element allocated in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=1.51
n(AlO1.5)/n(SiO2+AlO1.5)=0.28
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and pH=13 alkaline excitations are added into hydrothermal reaction kettle
Agent, is thoroughly mixed progress and excites activation 6 hours；After the completion of activation is excited, tobermorite is added to hydrothermal reaction kettle brilliant
Kind, then it is warming up to 180 DEG C of hydro-thermal reactions 16 hours, Temperature fall after the completion of hydro-thermal reaction；Wherein, alkali-activator is with mixing
Liquid-solid ratio between ash is 8:1(mL/g).
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
Wherein, sial conditioner is using at least one of flyash, diatomite, kaolin and bentonite.The present embodiment
Sial conditioner use flyash, disclosure satisfy that the ratio requirement of the molar content of calcium in combination ash, silicon and aluminium element.
Further, the alkali-activator is using alkali lye or uses the step 4) in obtained liquid phase alkali lye or use alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding.The alkali-activator of the present embodiment is directly adopted
With the alkali lye for meeting pH requirements, it is of course also possible to directly using meeting pH step 4) in obtained liquid phase alkali lye.
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, by will burn produce all flying dusts and
The incineration residue that all bottom ash are mixed to get is compounded with sial conditioner, is carried out calcium, silicon, the accurate allotment of aluminium element, is utilized water
Hot method prepares target calcium system aluminosilicate zeolite-tobermorite, using its heavy metal have extremely strong physical and chemical adsorption,
The principles such as ion exchange, physics trapping, thus it is stable while realizing heavy metal in flying dust and bottom ash, and with stablizing effect
The good, advantage of efficiency high；Therefore, cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the invention can be realized simultaneously to rubbish
Burn all flying dusts produced and bottom ash carries out efficient harmless treatment, and pollution sources will not be produced again, can be effective
Prevent secondary pollution.
Specifically, the present embodiment cinder from refuse incineration is medical refuse burning lime-ash, and the incinerator ash of the present embodiment
The XRD material phase analysis result of pulp water hot is as shown in figure 4, the Leaching Heavy Metals of cinder from refuse incineration and its hydrothermal product
As shown in table 4.
The Leaching Heavy Metals of the cinder from refuse incineration of table 4 and its hydrothermal product
Embodiment 4
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, comprise the following steps：
1) pre-process：All flying dusts produced will be burned and particle diameter is ground to again after the mixing of all bottom ash for below 80um,
Obtain the weight content of calcium, silicon and aluminium element in incineration residue, detection incineration residue；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and
The molar content ratio of calcium, silicon and the aluminium element allocated in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=1.73
n(AlO1.5)/n(SiO2+AlO1.5)=0.31
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and pH=13.5 alkalescence is added into hydrothermal reaction kettle and is swashed
Agent is sent out, progress is thoroughly mixed and excites activation 10 hours；After the completion of activation is excited, tobermorite is added to hydrothermal reaction kettle
Crystal seed, is then warming up to 160 DEG C of hydro-thermal reactions 12 hours, Temperature fall after the completion of hydro-thermal reaction；Wherein, alkali-activator is with mixing
It is 11 to close the liquid-solid ratio between ash:1(mL/g).
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
Wherein, sial conditioner is using at least one of flyash, diatomite, kaolin and bentonite.The present embodiment
Sial conditioner use flyash and diatomite, disclosure satisfy that the molar content of the calcium in combination ash, silicon and aluminium element is matched somebody with somebody
Than requiring.
Further, the alkali-activator is using alkali lye or uses the step 4) in obtained liquid phase alkali lye or use alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding.The alkali-activator of the present embodiment uses alkali
Liquid and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding, and be containing volume ratio in circulation mixed liquor
35% alkali lye and volume ratio is 65% liquid phase alkali lye.Wherein, alkali lye uses NaOH solution.Pass through obtain hydro-thermal reaction
Liquid phase alkali lye is configured to alkali-activator again with NaOH, can realize recycling for liquid phase alkali lye, prevent outside liquid phase alkali lye
Arrange and produce pollution sources again.
Further, the preparation method of tobermorite crystal seed is：With amorphous silicon di-oxide, calcium hydroxide and ethylenediamine tetrem
Sour (EDTA) is raw material；Calcium hydroxide is mixed with EDTA powder first, by liquid-solid ratio 10:1 adds deionized water, adds KOH
Regulation pH is 12.0-13.0；Amorphous silicon di-oxide is added, KOH is added again and adjusts pH for 12.0-13.0, and control volume
EDTA and Ca in system2+Mol ratio 1.0, Si4+Concentration be that 0.02mol/L, Ca and Si mol ratio is 2.0；Finally it is transferred to
In hydrothermal reaction kettle, heated 5-10 hours with 200 DEG C, it is 11 that the solid phase of generation, which is washed with deionized to pH, then at 80 DEG C
Heat drying 24 hours, ground sieve is prepared.
The preparation method of the tobermorite crystal seed of the present embodiment is：With amorphous silicon di-oxide, calcium hydroxide and ethylenediamine
Tetraacethyl (EDTA) is raw material；Calcium hydroxide is mixed with EDTA powder first, by liquid-solid ratio 10:1 adds deionized water, adds
KOH regulations pH is 12.5；Amorphous silicon di-oxide is added, it is EDTA in 12.5, and control system that KOH regulations pH is added again
With Ca2+Mol ratio 1.0, Si4+Concentration be that 0.02mol/L, Ca and Si mol ratio is 2.0；Finally it is transferred to hydro-thermal reaction
In kettle, heated 8 hours with 200 DEG C, it is 11 that the solid phase of generation, which is washed with deionized to pH, then small in 80 DEG C of heat dryings 24
When, ground sieve is prepared.Weight ratio between the tobermorite crystal seed and combination ash of the present embodiment is 3%.
The cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the present embodiment, by will burn produce all flying dusts and
The incineration residue that all bottom ash are mixed to get is compounded with sial conditioner, is carried out calcium, silicon, the accurate allotment of aluminium element, is utilized water
Hot method prepares target calcium system aluminosilicate zeolite-tobermorite, using its heavy metal have extremely strong physical and chemical adsorption,
The principles such as ion exchange, physics trapping, thus it is stable while realizing heavy metal in flying dust and bottom ash, and with stablizing effect
The good, advantage of efficiency high；Therefore, cinder from refuse incineration hydro-thermal method heavy metal antihunt means of the invention can be realized simultaneously to rubbish
Burn all flying dusts produced and bottom ash carries out efficient harmless treatment, and pollution sources will not be produced again, can be effective
Prevent secondary pollution.
Specifically, the present embodiment cinder from refuse incineration is domestic refuse incineration ash, and the incinerator ash of the present embodiment
The XRD material phase analysis result of pulp water hot is as shown in figure 5, the Leaching Heavy Metals of cinder from refuse incineration and its hydrothermal product
As shown in table 5.
The Leaching Heavy Metals of the cinder from refuse incineration of table 5 and its hydrothermal product
Embodiment described above is only the preferred embodiment to absolutely prove the present invention and being lifted, protection model of the invention
Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (10)
1. a kind of cinder from refuse incineration hydro-thermal method heavy metal antihunt means, it is characterised in that：Comprise the following steps：
1) pre-process：All flying dusts produced will be burned and obtained after the mixing of all bottom ash in incineration residue, detection incineration residue
The weight content of calcium, silicon and aluminium element；
2) allocate：Sial conditioner is added into incineration residue after pretreatment, combination ash is obtained after being well mixed, and allocate
The molar content ratio of calcium, silicon and aluminium element in combination ash is met：
n(CaO)/n(SiO2+AlO1.5)=0.60-1.73
n(AlO1.5)/n(SiO2+AlO1.5)=0-0.31
3) by step 2) obtained combination ash adds hydrothermal reaction kettle, and alkali-activator is added into hydrothermal reaction kettle, is fully stirred
Mix mixing progress and excite activation 6-12 hours；Then it is warming up to after the completion of 150-200 DEG C of hydro-thermal reaction, hydro-thermal reaction and drops naturally
Temperature；
4) hydro-thermal reaction product is subjected to dewater treatment, obtains solid product and liquid phase alkali lye.
2. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 1, it is characterised in that：The sial
Conditioner is using at least one of flyash, diatomite, kaolin and bentonite.
3. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 1, it is characterised in that：The step
3) in, the pH=12-14 of the alkali-activator.
4. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 3, it is characterised in that：The alkalescence
Liquid-solid ratio between exciting agent and the combination ash is 8-12:1(mL/g).
5. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 3, it is characterised in that：The alkalescence
Exciting agent is using alkali lye or use the step 4) in obtained liquid phase alkali lye or using alkali lye and the step 4) in obtain
The circulation mixed liquor of liquid phase Alkali liquid compounding.
6. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 5, it is characterised in that：The alkalescence
Exciting agent is using alkali lye and the step 4) in the obtained circulation mixed liquor of liquid phase Alkali liquid compounding, and the circulation mixing
The liquid phase alkali lye that the alkali lye and volume ratio for being 25%-50% containing volume ratio in liquid are 50%-75%.
7. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 3, it is characterised in that：The alkali lye
Using NaOH solution or Na2CO3Solution.
8. the cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim any one of 1-7, it is characterised in that：
The step 3) in, after the completion of activation is excited, the progress hydro-thermal that heated up again after tobermorite crystal seed is added to hydrothermal reaction kettle anti-
Should.
9. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 8, it is characterised in that：The hydro-thermal
The time of reaction is 12-24 hours.
10. cinder from refuse incineration hydro-thermal method heavy metal antihunt means according to claim 7, it is characterised in that：The snow
The preparation method of silicoglaserite crystal seed is：With amorphous silicon di-oxide, calcium hydroxide and ethylenediamine tetra-acetic acid (EDTA) for raw material；It is first
First calcium hydroxide is mixed with EDTA powder, by liquid-solid ratio 10:1 adds deionized water, and it is 12.0-13.0 to add KOH regulations pH；
Amorphous silicon di-oxide is added, it is EDTA and Ca in 12.0-13.0, and control system that KOH regulations pH is added again2+Mole
Than 1.0, Si4+Concentration be that 0.02mol/L, Ca and Si mol ratio is 2.0；Finally it is transferred in hydrothermal reaction kettle, with 200 DEG C
Heating 5-10 hour, it is 11 that the solid phase of generation, which is washed with deionized to pH, ground then in 80 DEG C of heat dryings 24 hours
Sieve is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457189.0A CN107265470A (en) | 2017-06-16 | 2017-06-16 | Cinder from refuse incineration hydro-thermal method heavy metal antihunt means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710457189.0A CN107265470A (en) | 2017-06-16 | 2017-06-16 | Cinder from refuse incineration hydro-thermal method heavy metal antihunt means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107265470A true CN107265470A (en) | 2017-10-20 |
Family
ID=60066457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710457189.0A Pending CN107265470A (en) | 2017-06-16 | 2017-06-16 | Cinder from refuse incineration hydro-thermal method heavy metal antihunt means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107265470A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108721824A (en) * | 2018-05-22 | 2018-11-02 | 重庆大学 | The method of incineration of refuse flyash synchronism stability heavy metal and degrading polycyclic aromatic hydrocarbons |
| CN111589837A (en) * | 2020-04-12 | 2020-08-28 | 北京锐上思环保科技有限公司 | Reinforced desalting method for water washing pretreatment of fly ash |
| CN112194148A (en) * | 2020-10-16 | 2021-01-08 | 河南理工大学 | Method for removing heavy metal ions by using tobermorite synthesized by microwave hydrothermal method |
| CN112893416A (en) * | 2021-02-05 | 2021-06-04 | 南京理工大学 | Recycling method of fly ash and fly ash hydrothermal treatment fluid |
| CN113172081A (en) * | 2021-06-16 | 2021-07-27 | 重庆三峰环境集团股份有限公司 | Waste incineration fly ash recycling treatment process and system |
| CN113231010A (en) * | 2021-06-03 | 2021-08-10 | 中南大学 | Polytype zeolite/C-S-H composite adsorption material and preparation method and application thereof |
| CN113716583A (en) * | 2021-09-22 | 2021-11-30 | 西安交通大学 | Method for preparing 4A zeolite by using MSWI fly ash and red mud hydrothermal method |
| CN116000069A (en) * | 2023-02-06 | 2023-04-25 | 一夫科技股份有限公司 | Method and system for processing waste resources |
| CN117482926A (en) * | 2023-11-01 | 2024-02-02 | 浙江大学 | Amphoteric ion adsorbent based on waste incineration fly ash, preparation method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844366A (en) * | 2010-04-15 | 2010-09-29 | 同济大学 | Method for solidifying incineration ash of household rubbish into building material by using hydrothermal technique |
| CN105948066A (en) * | 2016-04-26 | 2016-09-21 | 重庆大学 | Method for adding seed crystal for induced hydrothermal stabilization of heavy metals in incinerated waste fly ash |
-
2017
- 2017-06-16 CN CN201710457189.0A patent/CN107265470A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844366A (en) * | 2010-04-15 | 2010-09-29 | 同济大学 | Method for solidifying incineration ash of household rubbish into building material by using hydrothermal technique |
| CN105948066A (en) * | 2016-04-26 | 2016-09-21 | 重庆大学 | Method for adding seed crystal for induced hydrothermal stabilization of heavy metals in incinerated waste fly ash |
Non-Patent Citations (1)
| Title |
|---|
| 单成冲等: "城市生活垃圾焚烧底灰的水热固化研究", 《城市生活垃圾焚烧底灰的水热固化研究》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108721824A (en) * | 2018-05-22 | 2018-11-02 | 重庆大学 | The method of incineration of refuse flyash synchronism stability heavy metal and degrading polycyclic aromatic hydrocarbons |
| CN108721824B (en) * | 2018-05-22 | 2020-08-11 | 重庆大学 | Method for synchronously stabilizing heavy metals and degrading polycyclic aromatic hydrocarbons by using waste incineration fly ash |
| CN111589837A (en) * | 2020-04-12 | 2020-08-28 | 北京锐上思环保科技有限公司 | Reinforced desalting method for water washing pretreatment of fly ash |
| CN112194148A (en) * | 2020-10-16 | 2021-01-08 | 河南理工大学 | Method for removing heavy metal ions by using tobermorite synthesized by microwave hydrothermal method |
| CN112893416A (en) * | 2021-02-05 | 2021-06-04 | 南京理工大学 | Recycling method of fly ash and fly ash hydrothermal treatment fluid |
| CN113231010A (en) * | 2021-06-03 | 2021-08-10 | 中南大学 | Polytype zeolite/C-S-H composite adsorption material and preparation method and application thereof |
| CN113231010B (en) * | 2021-06-03 | 2022-07-29 | 中南大学 | Multi-type zeolite/C-S-H composite adsorption material and preparation method and application thereof |
| CN113172081A (en) * | 2021-06-16 | 2021-07-27 | 重庆三峰环境集团股份有限公司 | Waste incineration fly ash recycling treatment process and system |
| CN113172081B (en) * | 2021-06-16 | 2024-03-29 | 重庆三峰环境集团股份有限公司 | Waste incineration fly ash recycling treatment process and system |
| CN113716583A (en) * | 2021-09-22 | 2021-11-30 | 西安交通大学 | Method for preparing 4A zeolite by using MSWI fly ash and red mud hydrothermal method |
| CN116000069A (en) * | 2023-02-06 | 2023-04-25 | 一夫科技股份有限公司 | Method and system for processing waste resources |
| CN116000069B (en) * | 2023-02-06 | 2023-11-17 | 一夫科技股份有限公司 | Method and system for processing waste resources |
| CN117482926A (en) * | 2023-11-01 | 2024-02-02 | 浙江大学 | Amphoteric ion adsorbent based on waste incineration fly ash, preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107265470A (en) | Cinder from refuse incineration hydro-thermal method heavy metal antihunt means | |
| CN102206757B (en) | Heavy metal recycling method based on municipal solid waste incineration (MSWI) fly ash | |
| CN103978017B (en) | Incineration of refuse flyash villaumite removes system and method | |
| CN106282585B (en) | A kind of detoxification classification resource utilization method of domestic garbage incineration flyash | |
| CN106378352B (en) | A kind of incineration of refuse flyash fused salt heat treatment method | |
| CN102703155B (en) | Biomass fuel based on sludge, straw and raw coal, preparation method of biomass fuel and application of fuel slag | |
| CN111068612B (en) | Method for preparing zeolite-like porous material by using solid waste, zeolite-like porous material and application thereof | |
| CN106424077B (en) | Method for treating fly ash by using sludge | |
| CN103264044B (en) | A kind of method of heavy metal and dioxin in collaborative removal refuse incinerating flyash | |
| CN102886247B (en) | Method for preparing adsorbent by virtue of red mud in alumina industry and sludge in sewage treatment | |
| CN101962590B (en) | Regenerative coal produced by multiple kinds of oily sludge in oil refinery and preparation method thereof | |
| CN105948066B (en) | A kind of method for adding heavy metal in crystal seed induction hydrothermally stable incineration of refuse flyash | |
| CN102746023B (en) | Constructed wetland matrix filling material for simultaneous nitrogen and phosphorus removal and its preparation method | |
| CN107597817B (en) | Method for solidifying and stabilizing domestic garbage incineration fly ash by microorganisms | |
| CN101126044B (en) | Sludge fire coal and its preparing process | |
| CN101462835A (en) | Innocent treatment method and apparatus for refuse burning flyash | |
| CN108721824A (en) | The method of incineration of refuse flyash synchronism stability heavy metal and degrading polycyclic aromatic hydrocarbons | |
| CN104984979B (en) | A kind of method using chemistry cladding combustion stability flying dust | |
| CN109956690A (en) | A kind of domestic garbage incineration flyash processing method for cement industry | |
| CN114425549B (en) | Method for microwave hydrothermal detoxification and synchronous synthesis of tobermorite by using waste incineration fly ash | |
| CN105712739A (en) | Magnetic biological ceramsite prepared from waste incineration fly ash, and preparation method thereof | |
| CN108569836A (en) | A kind of the dehydration stabilization method and device of chromium-bearing sludge | |
| CN101851053B (en) | Inorganic composite sludge dehydration conditioner and application thereof | |
| CN106076248A (en) | A kind of preparation method of rare earth modified flyash | |
| CN102962240A (en) | Method for stabilizing treatment of waste incineration fly ash by utilizing silicon powder hydrothermal curing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |
|
| RJ01 | Rejection of invention patent application after publication |