CN104741072B - The preparation method of garbage power vent gas treatment porous adsorbing material - Google Patents
The preparation method of garbage power vent gas treatment porous adsorbing material Download PDFInfo
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Abstract
The present invention relates to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, comprise the following steps：Step (1), coarse crushing is distinguished by attapulgite, wollastonite, diatomite, and three kinds of little particle mineral under sieving are well mixed by roller screen, obtain mixed mineral, then spray dilute sulfuric acid, and then spray water is squeezed into shaped minerals composition to mixed mineral；Step (2), the shaped minerals composition is stacked more than 48 hours, then dries naturally to moisture weight content and is less than 20%；Step (3), the shaped minerals composition input rotary kiln that the moisture weight content is less than 20% is calcined；Step (4), the mineral after roasting are milled, and air-flow crushing is produced.The raw mineral materials of the present invention is easy to get, and cheap, processing cost is low；Operating procedure is simple, is easily controlled；Obtained porous adsorbing material is preferable to noxious substance effect in waste incineration gas, suitable for industrially large-scale application.
Description
Technical field
The present invention relates to a kind of preparation method of porous adsorbing material, and in particular to a kind of garbage power vent gas treatment is used many
The preparation method of hole sorbing material.
Background technology
Waste incineration and generating electricity is referred to use special garbage incinerating system, is situated between using urban industry and house refuse as burning
Matter, while burning disposal is carried out to rubbish, a kind of new-generation mode generated electricity using the energy of its generation.
Burning electricity generation can produce a byproduct in combustion --- and dioxin, it is referred to as by the World Health Organization
" most malicious carcinogen ", with fume emission into air, causes serious second to pollute to air.Developed country's city life
The dioxin produced in waste incinerator combustion process living accounts for known dioxin and respectively generates the 95% of source growing amount.Current foreign countries one
A little developed countries have certain limitations to waste incineration project, and the state such as Japan, which even makes laws to close or prohibit, builds waste incineration facility.Together
When, the lime-ash and fly-ash heavy metal content produced in burning is very high, and its processing is also problem.Some places carry out secondary landfill,
The hidden danger in secondary pollution soil is left again.Although can technically improve incinerator furnace temperature decomposes dioxin, then is inhaled with activated carbon
Attached, dust can be solved by bag-type dust, but the investment of these environmental protection facilities is huge, largely passes through the modes such as technological transformation at present
The burning power plant started powerless processing at all, the software and hardware condition of environmental administration is also inadequate, monitoring can not in place, and two
Dislike English testing expense also extremely expensive.To sum up, because waste incineration and generating electricity tail gas causes serious secondary pollution to environment, so
Research how waste incineration and generating electricity tail gas, which to be further processed, seems extremely important, such as develops garbage power vent gas treatment
It is exactly a very direction with application value with porous adsorbing material.
CN103949219A (publication date 2014-07-30) discloses a kind of the composite porous of selection absorption aromatic hydrocarbons
Preparation method, the material is obtained by two monomer molecule cocrystallization, i.e., by 1- acetyl group -3- (4- methoxyphenyls) -5- (9- anthracenes
Base) pyrazoline (AMPE) and 7,7,8,8- four cyano benzoquinone bismethanes (TCNQ) dissolve in non-aromatic hydrocarbon solvent, molten through removing
Obtained composite is dried after agent, composite of the invention is applied to aromatic hydrocarbons with after non-aromatics solvent mixture, only selecting
Absorb to property the aromatic hydrocarbons in mixture.
Although above-mentioned prior art discloses the composite porous of some selection absorption aromatic hydrocarbons, certain need are disclosure satisfy that
Will, such as the tail gas such as the dioxin that waste incineration and generating electricity is produced in combustion are handled, but these prior arts still suffer from one
Fixed defect：Such as two monomer molecule cocrystallization obtain above-mentioned composite porous, because the cost of two monomer molecules is high,
Cause above-mentioned composite porous with high costs, be unsuitable for industrially large-scale promotion application.
Therefore, for adsorbing the composite porous of the tail gas such as the dioxin that waste incineration and generating electricity is produced in combustion
Improved and optimization demand in the presence of further, this is also one of study hotspot and emphasis in the technical field, is even more the present invention
Where the power and starting point that are accomplished.
The content of the invention
In order to which the garbage power vent gas treatment porous adsorbing material cost for overcoming prior art to exist is high, be unsuitable in work
The technical problem of large-scale promotion application in industry, the present inventor is after substantial amounts of further investigation has been carried out, so as to complete this
Invention.
The present invention is achieved through the following technical solutions, and is inhaled in particular to a kind of garbage power vent gas treatment with porous
The preparation method of enclosure material, comprises the following steps：
Step (1), coarse crushing, roller screen, by three kinds of little particle mineral under sieving are distinguished by attapulgite, wollastonite, diatomite
It is well mixed, mixed mineral is obtained, then dilute sulfuric acid is sprayed, then spray water extrudes slabbing ore deposit to mixed mineral using three-roller
Compositions；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), the shaped minerals composition input rotary kiln that the moisture weight content is less than 20% is calcined；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
It is preferred that, in step (1), the aperture of the roller screen is 2-5cm, and the scope, which includes, belongs to any tool therein
Body point value, such as 2cm, 3cm, 4cm or 5cm, most preferably 3cm, also include any two point value institute in these specific point values
The scope of composition, more preferably 3-4cm.
It is preferred that, in step (1), the diatomaceous weight ratios of attapulgite ︰ silicon ash stone ︰ are (3- in three kinds of little particles
7) ︰ (2-5) ︰ (1-3), the scope, which includes, belongs to any specific point value therein, the ︰ 1 of such as 3 ︰ 2, the ︰ 3 of 3 ︰ 2, the ︰ 1 of 3 ︰ 5,3 ︰
5 ︰ 3, the ︰ 1 of 7 ︰ 2, the ︰ 3 of 7 ︰ 2, the ︰ 1 of 7 ︰ 5 or 7 ︰ 5 ︰ 3, most preferably 5 ︰ 3 ︰ 2, also include any two point value in these specific point values
The scope constituted, more preferably (4-6) ︰ (3-4) ︰ (2-3).
It is preferred that, in step (1), the dilute sulfuric acid uses mass fraction concentration for 5-15% sulfuric acid, and the scope includes
Belong to any specific point value therein, such as 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14% or
15%, also include the scope that any two point value in these specific point values is constituted, more preferably 8-12%.
It is preferred that, in step (1), the consumption of the dilute sulfuric acid is the 20-40% of three kinds of little particles mineral gross weight,
The scope, which includes, belongs to any specific point value therein, such as 20%, 22%, 24%, 26%, 28%, 30%, 32%,
35%th, 37%, 38% or 40%, the scope that any two point value in these specific point values is constituted is also included, more preferably
25-35%.
It is preferred that, in step (1), continue after spray water to mixed mineral, the moisture weight content of mixed mineral is 40-
50%, the scope, which includes, belongs to any specific point value therein, such as 40%, 41%, 42%, 43%, 44%, 45%,
46%th, 47%, 48%, 49% or 50%, most preferably 45%, also include any two point value institute structure in these specific point values
Into scope, more preferably 43-48%.
It is preferred that, in step (1), the lamellar spacing of the shaped minerals composition is control 1-4mm, and the scope includes
Any specific point value therein is belonged to, such as 1mm, 2mm, 3mm or 4mm, most preferably 2mm also include these specific point values
In the scope that is constituted of any two point value, more preferably 1-3mm.
It is preferred that, in step (3), the shaped minerals composition that the moisture weight content is less than 20% is inputted with conveyer belt
The rotary kiln.
It is preferred that, in step (3), the temperature of the roasting is 540-560 DEG C, and the scope, which includes, belongs to therein
What specific point value, such as 540 DEG C, 542 DEG C, 545 DEG C, 547 DEG C, 550 DEG C, 553 DEG C, 555 DEG C, 557 DEG C, 560 DEG C, most preferably
550 DEG C, also include the scope that any two point value in these specific point values is constituted, more preferably 545-555 DEG C.
It is preferred that, in step (3), time 10-20 minute of the roasting, the scope include belong to it is therein any
Specific point value, such as 11 minutes, 12 minutes, 13 minutes, 14 minutes, 15 minutes, 16 minutes, 17 minutes, 18 minutes, 19 minutes or
20 minutes, most preferably 15 minutes, the scope that any two point value in these specific point values is constituted is also included, more preferably
13-18 minutes.
Compared with prior art, beneficial effects of the present invention are as follows：The present invention is using attapulgite, wollastonite, diatomite
As raw material, by the series of steps such as mixing, extruding, dry, be calcined, crush, in particular by dilute sulfuric acid to mixed mineral
Sprinkling pretreatment is carried out, so as to obtain garbage power vent gas treatment porous adsorbing material.The raw mineral materials of the present invention is easy to get, valency
Lattice are cheap, and processing cost is low；Operating procedure is simple, is easily controlled；Obtained porous adsorbing material to dioxin, heavy metal cadmium,
Noxious substance effect is preferable in lead, the waste incineration gas such as halogen, suitable for industrially large-scale application.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
The present embodiment is related to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, by following steps group
Into：
Step (1), coarse crushing, aperture 2cm roller screens, three kinds small under sieving are distinguished by attapulgite, wollastonite, diatomite
Grain mineral are well mixed (the diatomaceous weight ratios of the convex Bang Shi ︰ Gui Hui Shi ︰ of Ao are the ︰ 3 of 3 ︰ 2), obtain mixed mineral, then spray dilute sulfuric acid
(use mass fraction concentration for 10% sulfuric acid, consumption be three kinds of little particle mineral gross weights 35%), then spray water is extremely
Mixed mineral, it is 50% to make moisture weight content, and shaped minerals composition is squeezed into using three-roller, and lamellar spacing is control
1mm；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), rotary kiln is inputted by shaped minerals composition of the moisture weight content less than 20% with conveyer belt
It is calcined, the temperature of roasting is 545 DEG C, the 15 minutes time of roasting；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
Embodiment 2
The present embodiment is related to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, by following steps group
Into：
Step (1), coarse crushing, aperture 3cm roller screens, three kinds small under sieving are distinguished by attapulgite, wollastonite, diatomite
Grain mineral are well mixed (the diatomaceous weight ratios of the convex Bang Shi ︰ Gui Hui Shi ︰ of Ao are the ︰ 1 of 7 ︰ 5), obtain mixed mineral, then spray dilute sulfuric acid
(use mass fraction concentration for 12% sulfuric acid, consumption for three kinds of little particle gross weights 40%), then spray water is extremely
Mixed mineral, it is 40% to make moisture weight content, and shaped minerals composition is squeezed into using three-roller, and lamellar spacing is control
2mm；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), rotary kiln is inputted by shaped minerals composition of the moisture weight content less than 20% with conveyer belt
It is calcined, the temperature of roasting is 550 DEG C, the 18 minutes time of roasting；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
Embodiment 3
The present embodiment is related to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, by following steps group
Into：
Step (1), coarse crushing, aperture 4cm roller screens, three kinds small under sieving are distinguished by attapulgite, wollastonite, diatomite
Grain mineral are well mixed (the diatomaceous weight ratios of the convex Bang Shi ︰ Gui Hui Shi ︰ of Ao are the ︰ 3 of 7 ︰ 5), obtain mixed mineral, then spray dilute sulfuric acid
(use mass fraction concentration for 15% sulfuric acid, consumption for three kinds of little particle gross weights 20%), then spray water is extremely
Mixed mineral makes moisture weight content be 43%, and shaped minerals composition is squeezed into using three-roller, and lamellar spacing is control
3mm；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), rotary kiln is inputted by shaped minerals composition of the moisture weight content less than 20% with conveyer belt
It is calcined, the temperature of roasting is 555 DEG C, the 20 minutes time of roasting；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
Embodiment 4
The present embodiment is related to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, by following steps group
Into：
Step (1), coarse crushing, aperture 5cm roller screens, three kinds small under sieving are distinguished by attapulgite, wollastonite, diatomite
Grain mineral are well mixed (the diatomaceous weight ratios of the convex Bang Shi ︰ Gui Hui Shi ︰ of Ao are the ︰ 2 of 5 ︰ 3), obtain mixed mineral, then spray dilute sulfuric acid
(use mass fraction concentration for 5% sulfuric acid, consumption for three kinds of little particle gross weights 25%), then spray water is to mixed
Closing mineral makes moisture weight content be 45%, and shaped minerals composition is squeezed into using three-roller, and lamellar spacing is control 4mm；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), rotary kiln is inputted by shaped minerals composition of the moisture weight content less than 20% with conveyer belt
It is calcined, the temperature of roasting is 560 DEG C, the 10 minutes time of roasting；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
Embodiment 5
The present embodiment is related to a kind of preparation method of garbage power vent gas treatment porous adsorbing material, by following steps group
Into：
Step (1), coarse crushing, aperture 3cm roller screens, three kinds small under sieving are distinguished by attapulgite, wollastonite, diatomite
Grain mineral are well mixed (the diatomaceous weight ratios of the convex Bang Shi ︰ Gui Hui Shi ︰ of Ao are the ︰ 1 of 3 ︰ 2), obtain mixed mineral, then spray dilute sulfuric acid
(use mass fraction concentration for 8% sulfuric acid, consumption for three kinds of little particle gross weights 30%), then spray water is to mixed
Closing mineral makes moisture weight content be 48%, and shaped minerals composition is squeezed into using three-roller, and lamellar spacing is control 2mm；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dried naturally to moisture weight content
Less than 20%；
Step (3), rotary kiln is inputted by shaped minerals composition of the moisture weight content less than 20% with conveyer belt
It is calcined, the temperature of roasting is 540 DEG C, the 13 minutes time of roasting；
Step (4), the mineral after roasting are milled, and air-flow crushing produces the porous adsorption material of garbage power vent gas treatment
Material.
Comparative example 1
The difference of this comparative example and embodiment 1 is：In step (1), mixed mineral does not spray dilute sulfuric acid.
Comparative example 2
The difference of this comparative example and embodiment 2 is：In step (1), mixed mineral does not spray dilute sulfuric acid.
Comparative example 3
The difference of this comparative example and embodiment 3 is：In step (1), mixed mineral does not spray dilute sulfuric acid.
Comparative example 4
The difference of this comparative example and embodiment 4 is：In step (1), mixed mineral does not spray dilute sulfuric acid.
Comparative example 5
The difference of this comparative example and embodiment 5 is：In step (1), mixed mineral does not spray dilute sulfuric acid.
Implement above-described embodiment 1-5 and comparative example 1-5, and the suction obtained respectively with embodiment 1-5 and comparative example 1-5 respectively
Enclosure material, according to garbage power tail gas and the envelope-bulk to weight ratio 100 of above-mentioned sorbing material:Adsorption test is carried out under 5 room temperature conditions,
Garbage power tail gas in each experiment is same source, and each embodiment and comparative example are repeated five times, take its average value to carry out
Calculate, acquired results are as shown in table 1 below.
The embodiment 1-5 of table 1 and comparative example 1-5 result
As seen from the above table, the dioxin adsorption rate in embodiment 1-5 is in 92.8-96.1%, and comparative example 1-5 dioxin
Adsorption rate illustrates that the dioxin adsorption rate amplitude in embodiment 1-5 is notable in 51.3-64.5%, while illustrate in step (1),
The mineral spray dilute sulfuric acid crushed and mixed is pre-processed for the porous adsorbing material finally obtained in garbage power tail gas two
In terms of disliking the removal absorption of English there is material impact, especially dilute sulfuric acid to use mass fraction concentration to be three for 5-15%, consumption
When planting the 20-40% of little particle mineral gross weight, the removal effect of dioxin is more obvious, in addition, heavy metal cadmium, lead, halogen
Also more satisfactory Deng noxious substance effect in waste incineration gas, therefore, the present invention is suitable to industrially large-scale application.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of preparation method of garbage power vent gas treatment porous adsorbing material, it is characterised in that comprise the following steps：
Step (1), coarse crushing is distinguished by attapulgite, wollastonite, diatomite, and roller screen mixes three kinds of little particle mineral under sieving
Uniformly, mixed mineral is obtained, then sprays dilute sulfuric acid, then spray water is squeezed into shaped minerals group to mixed mineral using three-roller
Compound；
Step (2), the shaped minerals composition is stacked more than 48 hours, then dries to moisture weight content and is less than naturally
20%；
Step (3), the shaped minerals composition input rotary kiln that the moisture weight content is less than 20% is calcined；
Step (4), the mineral after roasting are milled, and air-flow crushing produces garbage power vent gas treatment porous adsorbing material.
2. preparation method as claimed in claim 1, it is characterised in that in step (1), the aperture of the roller screen is 2-5cm.
3. it is recessed in preparation method as claimed in claim 1, it is characterised in that in step (1), three kinds of little particle mineral
The diatomaceous weight ratios of convex Bang Shi ︰ Gui Hui Shi ︰ are (3-7) ︰ (2-5) ︰ (1-3).
4. preparation method as claimed in claim 1, it is characterised in that in step (1), the dilute sulfuric acid use mass fraction for
5-15% sulfuric acid.
5. preparation method as claimed in claim 1, it is characterised in that in step (1), the consumption of the dilute sulfuric acid is described three
Plant the 20-40% of little particle gross weight.
6. preparation method as claimed in claim 1, it is characterised in that in step (1), after spray water to mixed mineral, is mixed
The moisture weight content for closing mineral is 40-50%.
7. preparation method as claimed in claim 1, it is characterised in that in step (1), the lamella of the shaped minerals composition
Thickness is control 1-4mm.
8. preparation method as claimed in claim 1, it is characterised in that in step (3), the moisture weight content is less than 20%
Shaped minerals composition input the rotary kiln with conveyer belt.
9. preparation method as claimed in claim 1, it is characterised in that in step (3), the temperature of the roasting is 540-560
℃。
10. preparation method as claimed in claim 1, it is characterised in that in step (3), time 10-20 point of the roasting
Clock.
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|---|---|---|---|---|
| CN102824892A (en) * | 2011-06-17 | 2012-12-19 | 南京亚东奥土矿业有限公司 | Absorbent used for removing dioxin in garbage incineration exhaust gas, and preparation method and application thereof |
| CN104212028A (en) * | 2014-08-21 | 2014-12-17 | 武汉凌辉高分子材料有限公司 | Preparation method for synthetic porous calcium silicate high-adsorption master batch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000140627A (en) * | 1998-11-10 | 2000-05-23 | Takuma Co Ltd | Dioxin removing material, dioxin removing method and regenerating method of dioxin removing material |
| JP2001219056A (en) * | 2000-02-14 | 2001-08-14 | Miura Co Ltd | Adsorbent for dioxins |
| CN102527337A (en) * | 2012-03-08 | 2012-07-04 | 天津市嘉腾环保设备有限公司 | Compound adsorbent grain and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824892A (en) * | 2011-06-17 | 2012-12-19 | 南京亚东奥土矿业有限公司 | Absorbent used for removing dioxin in garbage incineration exhaust gas, and preparation method and application thereof |
| CN104212028A (en) * | 2014-08-21 | 2014-12-17 | 武汉凌辉高分子材料有限公司 | Preparation method for synthetic porous calcium silicate high-adsorption master batch |
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