CN109433009A - The device and method of dioxin toxic equivalent in a kind of reduction incineration of refuse flyash - Google Patents
The device and method of dioxin toxic equivalent in a kind of reduction incineration of refuse flyash Download PDFInfo
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- CN109433009A CN109433009A CN201811361662.6A CN201811361662A CN109433009A CN 109433009 A CN109433009 A CN 109433009A CN 201811361662 A CN201811361662 A CN 201811361662A CN 109433009 A CN109433009 A CN 109433009A
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- bulge loop
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/88—Replacing filter elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/21—Organic compounds not provided for in groups B01D2251/206 or B01D2251/208
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
- B01D2258/0291—Flue gases from waste incineration plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The present invention relates to a kind of device and method of dioxin toxic equivalent in reduction incineration of refuse flyash, it includes: tube body, and the tube body offers the air inlet and air outlet being oppositely arranged；First bulge loop, first bulge loop are formed on the inner surface of the tube body, and by its both ends, portion is gradually reduced the internal diameter of first bulge loop thereto；Second bulge loop；Filter core, the filter core are detachably inserted between the second bulge loop described in twice；Third bulge loop, the third bulge loop has twice and interval is formed on the inner surface of the tube body, and the spacing of second bulge loop and the gas outlet is less than with the spacing of the gas outlet；Catalytic filler, the catalytic filler are removably arranged between third bulge loop described in twice；Spray thrower, the spray thrower are set to the other side of the catalytic filler, for spraying inorganic ammonia or Amine Solutions.Considerably reduce environmental pollution.
Description
Technical field
The invention belongs to environmental technology fields, are related to a kind of method for reducing dioxin toxic equivalent, and in particular to a kind of
Reduce the device and method of dioxin toxic equivalent in incineration of refuse flyash.
Background technique
The domestic waste that the whole world generates daily at present causes garbage problem to become and looks steadily throughout the world up to as many as 27,000,000 tons
One of purpose main Environmental Problems.For China, domestic waste is increased with annual 8%~10% speed, per capita day
It produces quantity of refuse and reaches 1kg or so, be up to 2.1 hundred million tons by China's municipal refuse annual output in 2015.And based on landfill, heap
Technology of garbage disposal supplemented by fertilizer, burning occupies a large amount of land resource.With the development of technology of garbage disposal, there is land occupation
Small, short processing time, minimizing be significant, it is innoxious more thoroughly and incineration treatment technology the advantages that recyclable waste heat is some
The level of economic development is higher, refuse thermal value is higher, the limited city of land resource is gradually applied.
Building up and coming into operation with more and more garbage burning factories, the discharge amount of China's incineration of refuse flyash is also got over
Come huger.Incineration of refuse flyash is the solid waste that garbage burning factory flue gas cleaning system is collected, it is enriched rubbish
Most of heavy metal element, readily soluble salts substances and a certain amount of dioxin chloro thing in rubbish, therefore various countries are by rubbish
Flying ash is classified as hazardous solid waste.Currently, China only has two to the legal processes of incineration of refuse flyash: first is that entering danger
Dangerous waste guaveyard landfill, entry requirement is " hazard waste landfill contamination control standard ", wherein mainly to heavy metal
It is required that requirement generally can be reached with cement pack not to the requirement of dioxin；Second is that being filled out into sanitary filling field
It buries, entry requirement is " household refuse landfill sites contamination control standard ", and point out at the 6.3rd section of the standard: consumer waste incineration flies
Ash meets following condition after processing, can enter household refuse landfill sites landfill stabilization；Mainly following data: moisture content is small
It is lower than defined limit value lower than danger in 3 μ g TEQ/kg, the leachate according to HJ/T300 preparation in 30%, dioxins concentration
Deng.
Dioxin is actually the abbreviation of dioxin-like chemical, and what it referred to is not a kind of single substance, but structure and
The all much like two major classes organic compound comprising numerous congeners or isomers of shape is that more chlorodiphenyls-p- two are disliked respectively
EnglishAnd polychlorinated dibenzo
The microorganism of nature and hydrolysis are smaller on the influence of the molecular structure of dioxin, therefore the dioxin in environment is difficult nature
Degradation is eliminated.Its toxicity is very big, is 900 times of arsenic；But also there is genotoxicity and genetoxic, directly harm is sub
The Health and Living of Sun offspring.Therefore, dioxin contamination is to be related to the significant problem of mankind's living or death, it is necessary to strictly be controlled
System.International Cancer Research Center has been classified as mankind's level-one carcinogenic substance.
Currently, the research for dioxin processing technique in flying dust specifically includes that fusion method, vapor phase hydrogen reduction method, light
Technology is catalytically decomposed in chemical decomposition method, electron beam decomposition technique, low temperature plasma, supercritical Water Oxidation Technology, low temperature medicament
Deng, these methods or more demanding, it is suitable only for carrying out in the lab, is not suitable for carrying out in industrial occasions such as incinerators；It wants
It is expensive, do not have practical utility value.
Summary of the invention
A kind of reduction waste incineration proposed the purpose of the present invention is to solve disadvantage existing in the prior art flies
The equipment of dioxin toxic equivalent in ash.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: dioxin poison in a kind of reduction incineration of refuse flyash
The equipment of property equivalent, it includes:
Tube body, the tube body offer the air inlet and air outlet being oppositely arranged；
First bulge loop, first bulge loop are formed on the inner surface of the tube body, and the internal diameter of first bulge loop is by it
Portion is gradually reduced thereto at both ends；
Second bulge loop, second bulge loop have twice and interval is formed on the inner surface of the tube body, with it is described go out
The spacing of port is less than the spacing of first bulge loop and the gas outlet；
Filter core, the filter core are detachably inserted between the second bulge loop described in twice；
Third bulge loop, the third bulge loop have twice and interval is formed on the inner surface of the tube body, with it is described go out
The spacing of port is less than the spacing of second bulge loop and the gas outlet；
Catalytic filler, the catalytic filler are removably arranged between third bulge loop described in twice；
Spray thrower, the spray thrower are set to the other side of the catalytic filler, molten for spraying inorganic ammonia or organic amine
Liquid.
Optimally, it is fixed with handle on the side of the filter core, is provided on the outer wall of the tube body with described palmistry
The sealed cover slip of cooperation.
Optimally, the door that reloads corresponding with the catalytic filler is provided on the outer wall of tube body.
Optimally, the catalytic filler, which is negative, is loaded with the glass fibre of catalyst, is inside laid with ultraviolet lamp bar.
Optimally, the catalyst is rutile TiO2。
Another object of the present invention is to provide a kind of side of dioxin toxic equivalent in above-mentioned reduction incineration of refuse flyash
Method, it the following steps are included: spray inorganic ammonia or Amine Solutions into the flue gas containing flying ash so that its in room temperature or
It is reacted under heating condition.
Optimally, inorganic ammonia is the ammonium hydroxide that concentration is 15~28wt%；The organic amine is methylamine, ethamine, ethylenediamine, two
Methylamine, triethylamine, aniline, triethylene tetramine, diethylenetriamine, tetraethylenepentamine, triethylene diamine, hexa and ring
One of hexylamine is a variety of, solution concentration be 10~20wt% (usually aqueous solution, also can be used can dissolve it is above-mentioned
The solvent of ethyl alcohol, the acetone of compound etc.).
Further, the organic amine is the mixture that triethylamine and aniline 1:1 in mass ratio are formed.
Due to the above technical solutions, the present invention has the following advantages over the prior art: the present invention reduces rubbish
The equipment of dioxin toxic equivalent in flying ash, by setting gradually filter core, catalytic filler and spray thrower in tube body, in this way
It can guarantee sufficiently to spray it inorganic ammonia or organic amine so that spraying after being filtered removal large-grain particles to flue gas
Solution and dioxin are sufficiently reacted under ultraviolet irradiation, considerably reduce environmental pollution.
The method that the present invention reduces dioxin toxic equivalent in incineration of refuse flyash walks the fume treatment containing dioxin
Rapid simple, high treating effect, and the stronger chlorine atom of Dioxin Toxicosis is removed, to be greatly reduced two in flying dust
Dislike English toxic equivalent.
Detailed description of the invention
Fig. 1 is the device structure schematic diagram that the present invention reduces dioxin toxic equivalent in incineration of refuse flyash.
Specific embodiment
The preferred embodiment of the invention is described in detail below in conjunction with attached drawing.
Embodiment 1
The present embodiment provides a kind of equipment of dioxin toxic equivalent in reduction incineration of refuse flyash, as shown in Figure 1, including
Tube body 1, the first bulge loop 2, the second bulge loop 3, filter core 4, third bulge loop 5, catalytic filler 6 and spray thrower 7 etc..
Wherein, tube body 1 offers the air inlet and air outlet 11 that are oppositely arranged (i.e. one end of tube body 1 is air inlet, and another
One end is gas outlet 11).First bulge loop 2 is formed on the inner surface of tube body 1, it is arranged concentrically with tube body 1, but its internal diameter is by two
End is gradually reduced to middle part；Flue gas imports in tube body 1 in this way and while flowing through herein can generate vortex and avoid in flue gas
The premature settlement of grain.Second bulge loop 3 has twice, their intervals are arranged and are formed on the inner surface of tube body 1；Second bulge loop, 3 phase
For the first bulge loop 2 closer to gas outlet 11, i.e. the second bulge loop 3 is with the spacing of gas outlet 11 less than the first bulge loop 2 and gas outlet
11 spacing.Filter core 4 is detachably inserted between the second bulge loop of twice 3, for being filtered to remove biggish dust in flue gas
Grain, it is therefore desirable to which periodic replacement has an adverse effect to avoid to flue gas outlet；Handle is fixed on the side of usual filter core 4
41, the sealed cover slip 42 (flue gas is avoided to leak) matched with handle 41 is provided on the outer wall of tube body 1；Filter core 4 is usually 200
Strainer more than mesh.Third bulge loop 5 also has twice, their intervals are arranged and are formed on the inner surface of tube body 1；Third bulge loop 5
Relative to the second bulge loop 3 closer to gas outlet 11, i.e., the spacing of third bulge loop 5 and gas outlet 11 is less than the second bulge loop 3 and outlet
The spacing of mouth 11.Catalytic filler 6 is removably arranged between twice third bulge loop 5, is provided with and is catalyzed on the outer wall of tube body 1
The corresponding door 61 that reloads of filler 6, in order to the sealing of catalytic filler 6 replaced while guaranteeing tube body 1；Catalytic filler 6 is negative
It is loaded with the glass fibre of catalyst, is inside laid with ultraviolet lamp bar, and catalyst is rutile TiO2.The setting of spray thrower 7 exists
The other side of catalytic filler 6, for spraying inorganic ammonia or Amine Solutions；Spray flow is the 1/10 of flue gas flow.
Embodiment 2
The present embodiment provides a kind of methods of dioxin toxic equivalent in reduction incineration of refuse flyash, it is used commonly
Pipeline, specifically: inorganic ammonia solution (ammonium hydroxide of 15wt%) is sprayed in the flue gas of Xiang Hanyou flying ash so that it is in room temperature item
It is reacted under part, flow of flue gas direction is contrary with spray.
Embodiment 3
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% methylamine solution.
Embodiment 4
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% ethylenediamine solution.
Embodiment 5
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% triethylamine solution.
Embodiment 6
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% aniline solution.
Embodiment 7
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% triethylene tetramine solution.
Embodiment 8
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% hexamethylene amine aqueous solution.
Embodiment 9
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use solution concentration be 15wt% mixed solution, triethylamine and aniline 1:1 in mass ratio.
Embodiment 10
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 9
It is almost the same, unlike: the temperature of flue gas is adjusted to 50~60 DEG C.
Embodiment 11
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: use the equipment in embodiment 1.
Comparative example 1
The present embodiment provides a kind of method of dioxin toxic equivalent in reduction incineration of refuse flyash, in it and embodiment 2
It is almost the same, unlike: spray common tap water.
The ash deposited on scraping flue gas outlet inside pipe wall flies (above spray thrower), measures its dioxin toxicity and works as
Amount.
| Dioxin toxic equivalent (μ g TEQ/kg) | |
| Embodiment 2 | 2.2 |
| Embodiment 3 | 2.5 |
| Embodiment 4 | 2.3 |
| Embodiment 5 | 2.1 |
| Embodiment 6 | 2.2 |
| Embodiment 7 | 2.3 |
| Embodiment 8 | 2.4 |
| Embodiment 9 | 1.9 |
| Embodiment 10 | 1.7 |
| Embodiment 11 | 1.5 |
| Comparative example 1 | 2.8 |
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of equipment for reducing dioxin toxic equivalent in incineration of refuse flyash, which is characterized in that it includes:
Tube body (1), the tube body (1) offer the air inlet and air outlet (11) being oppositely arranged；
First bulge loop (2), first bulge loop (2) are formed on the inner surface of the tube body (1), first bulge loop (2)
By its both ends, portion is gradually reduced internal diameter thereto；
Second bulge loop (3), second bulge loop (3) has twice and interval is formed on the inner surface of the tube body (1), with institute
The spacing for stating gas outlet (11) is less than the spacing of first bulge loop (2) and the gas outlet (11)；
Filter core (4), the filter core (4) are detachably inserted between the second bulge loop (3) described in twice；
Third bulge loop (5), the third bulge loop (5) has twice and interval is formed on the inner surface of the tube body (1), with institute
The spacing for stating gas outlet (11) is less than the spacing of second bulge loop (3) and the gas outlet (11)；
Catalytic filler (6), the catalytic filler (6) are removably arranged between third bulge loop (5) described in twice；
Spray thrower (7), the spray thrower (7) are set to the other side of the catalytic filler (6), for spraying inorganic ammonia or organic
Amine aqueous solution.
2. reducing the equipment of dioxin toxic equivalent in incineration of refuse flyash according to claim 1, it is characterised in that: described
It is fixed on the side of filter core (4) handle (41), is provided on the outer wall of the tube body (1) and matches with the handle (41)
Sealed cover slip (42).
3. reducing the equipment of dioxin toxic equivalent in incineration of refuse flyash according to claim 1, it is characterised in that: tube body
(1) door that reloads (61) corresponding with the catalytic filler (6) is provided on outer wall.
4. reducing the equipment of dioxin toxic equivalent in incineration of refuse flyash according to claim 1, it is characterised in that: described
Catalytic filler (6), which is negative, is loaded with the glass fibre of catalyst, is inside laid with ultraviolet lamp bar.
5. reducing the equipment of dioxin toxic equivalent in incineration of refuse flyash according to claim 1, it is characterised in that: described
Catalyst is rutile TiO2。
6. it is a kind of reduce incineration of refuse flyash in dioxin toxic equivalent method, which is characterized in that it the following steps are included: to
Inorganic ammonia or Amine Solutions are sprayed in flue gas containing flying ash so that it is reacted under room temperature or heating condition.
7. reducing the method for dioxin toxic equivalent in incineration of refuse flyash according to claim 6, it is characterised in that: inorganic
Ammonia is the ammonium hydroxide that concentration is 15 ~ 28wt%；The organic amine is methylamine, ethamine, ethylenediamine, dimethylamine, triethylamine, aniline, three second
One of alkene tetramine, diethylenetriamine, tetraethylenepentamine, triethylene diamine, hexa and cyclohexylamine are a variety of,
Solution concentration is 10 ~ 20 wt%.
8. reducing the method for dioxin toxic equivalent in incineration of refuse flyash according to claim 7, it is characterised in that: described
Organic amine is the mixture that triethylamine and aniline 1:1 in mass ratio are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361662.6A CN109433009B (en) | 2019-01-14 | 2019-01-14 | Device and method for reducing toxicity equivalent of dioxin in waste incineration fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361662.6A CN109433009B (en) | 2019-01-14 | 2019-01-14 | Device and method for reducing toxicity equivalent of dioxin in waste incineration fly ash |
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| CN109433009A true CN109433009A (en) | 2019-03-08 |
| CN109433009B CN109433009B (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117046259A (en) * | 2023-08-21 | 2023-11-14 | 生态环境部南京环境科学研究所 | Device for low-temperature efficient desorption of dioxin by utilizing household garbage incineration fly ash |
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