CN109848175A - The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash - Google Patents
The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash Download PDFInfo
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- CN109848175A CN109848175A CN201910000222.6A CN201910000222A CN109848175A CN 109848175 A CN109848175 A CN 109848175A CN 201910000222 A CN201910000222 A CN 201910000222A CN 109848175 A CN109848175 A CN 109848175A
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- heat exchanger
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Abstract
The invention discloses the removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash, including desorption device, hopper, first-class heat exchanger, secondary heat exchanger, plasma cleaning equipment and mercury recyclable device.The gaseous phase outlet of the desorption device connects the heat source import of first-class heat exchanger by blower, the heat source import of the thermal source outlet connection secondary heat exchanger of the first-class heat exchanger, the thermal source outlet of the secondary heat exchanger first connects mercury recyclable device and then connects plasma cleaning equipment, the cold source import for stating heat exchanger is connected to cooling medium, and the solid-phase outlet of the desorption device connects hopper.The operation of this method normal temperature and pressure, high to dioxin degradation efficiency, reaction rate is fast, and can recycle mercury, without secondary pollution.
Description
Technical field
The present invention relates to garbage flying ash process field, mercury and dioxin is de- in specially a kind of domestic garbage incineration flyash
Except method.
Background technique
This several years the wideling popularize at home with garbage incineration technology, the intensity and contribution rate of castoff burning are also mentioning
It rises, this results in emission request to be faced with great challenge.Garbage waste material after burning can generate a large amount of flying dust, generate
Flying dust in contain heavy metal Hg and dioxin, the Leaching of mercury is easier to exceeded, is brought directly to downstream when it is not handled
When process, the waste of resource or direct emission can be brought to cause environmental pollution.
Dioxin as persistent organic pollutants have environmental persistence, bioconcentration, long-distance migration ability and
Biohazardous just can remain the several years in the ecosystem once being formed, and even more long, it is usually along with castoff burning etc.
Thermal treatment process and generate, burning process includes that municipal domestic waste, danger wastes burn rich, Biohazard Waste and burn and dirty
Mud burns, this is most important source in the artificial source of current dioxin.China implements new " life on July 1st, 2014
Pollution in Municipal Solid Waste Incineration living controls standard " (GB18485-2014) by the emission limit of dioxin from original 1ngTEQ/Nm3Under
It is adjusted to 0.1ngTEQ/Nm3.This makes Chinese waste incineration enterprise that will face more acute dioxin emission reducing problem, exploitation
The dioxin minimizing technology of high-efficiency environment friendly becomes most important.
Summary of the invention
The purpose of the present invention is to provide the removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash, to solve
The waste of the mercury resource proposed in above-mentioned background and the toxic pollutant problem of dioxin.
To achieve the goals above, present invention employs following technical solutions:
The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash, including desorption device, hopper, first-class heat exchanger,
Secondary heat exchanger, plasma cleaning equipment and mercury recyclable device.The gaseous phase outlet of the desorption device connects level-one by blower and changes
The heat source import of hot device, the heat source import of the thermal source outlet connection secondary heat exchanger of the first-class heat exchanger, the secondary heat exchange
The thermal source outlet of device first connects mercury recyclable device and then connects plasma cleaning equipment, and the solid-phase outlet of the desorption device connects row
Hopper.
The cold source import of the first-class heat exchanger and secondary heat exchanger is connected to cooling medium.
Further, the plasma purifier includes rack, the rack be equipped with cabinet, the cabinet include etc.
Ion electric field room, the plasma electric field room top are equipped with feed entrance, and inside is equipped with positive electrode and negative electrode, the cabinet
Lower section is equipped with air outlet.
Further, the positive electricity extremely spiral positive electrode in the plasma electric field room, the extremely annular negative electrode of negative electricity, institute
State positive and negative electrode in vertical state, the central axis extension line of positive electrode passes through the center of negative electrode.
Further, the air outlet is equipped with exhaust gas and adsorbs storehouse, and the absorption storehouse is provided with adsorbent, can be further
Increase the discarded effect of degradation purification.
Detailed description of the invention
Fig. 1 is that the removal methods of mercury and dioxin are shown in a kind of domestic garbage incineration flyash provided in an embodiment of the present invention
It is intended to；
Fig. 2 is plasma in the removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash provided in an embodiment of the present invention
Purification device structural schematic diagram；
In figure: 1, desorption device；2, hopper；3, first-class heat exchanger；4, secondary heat exchanger；5, plasma cleaning equipment；501, machine
Frame；502, cabinet；503, plasma electric field room；504, positive electrode；505 negative electrodes；506, feed entrance；507, exhaust gas adsorbs
Storehouse；508, air outlet；6, mercury recyclable device.
Specific implementation method
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings
Component can be arranged and be designed with a variety of different configurations.Therefore, below to the embodiment of the present invention provided in the accompanying drawings
Detailed description be not intended to limit the range of claimed invention, but be merely representative of selected embodiment of the invention.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless unless otherwise clearly defined and limited, term " phase
Even ", " connection " " installation " shall be understood in a broad sense, for example, can be fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be electrical connection, be also possible to be mechanically connected；It can be the connection inside two elements, can be phase between intermediary
Connection, or be directly connected to.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, illustrating mercury and dioxin in a kind of domestic garbage incineration flyash provided in an embodiment of the present invention
Removal methods, including desorption device 1, hopper 2, first-class heat exchanger 3, secondary heat exchanger 4, plasma purifier 5, mercury recycling dress
6 are set, the solid-phase outlet of the desorption device 1 connects hopper 2, the heat of the gaseous phase outlet connection first-class heat exchanger 3 of the desorption device 1
Source import, the heat source import of the thermal source outlet connection secondary heat exchanger 4 of the first-class heat exchanger 3, the heat of the secondary heat exchanger 4
First connection mercury recyclable device 6 connects plasma cleaning equipment 5 in turn for source outlet.
In this method, waste combustion flying dust, which enters, carries out heating heating in desorption device 1, the temperature control in desorption device 1
At 400-700 DEG C, in desorption device 1 while heat temperature raising, dioxin, mercury and mercuric compounds vaporize flying dust under the influence of high temperature
Become gaseous state, the mercury and dioxin after vaporization are transferred to progress primary cooling cooling in first-class heat exchanger 3 by blower, and then two
It being cooled down twice in grade heat exchanger 4 to 5-20 DEG C, mercury is flowed into mercury recyclable device 6 in the form of liquid nonvalent mercury at this time, and two
It dislikes English and enters plasma purifier 5 so as to cooling gas stripping in the form of solid, plasma purifier 5 passes through high frequency arteries and veins
Impulse electricity generates high energy electron and hydroxyl radical free radical, ozone isoreactivity particle, a large amount of high energy electron bombard at a terrific speed
Dioxin molecule makes it be cracked into the lower small-molecule substance-CO of nontoxic or toxicity2、H2O, HCl is discharged.Consolidating in desorption device 1
Body material is then delivered to the discharge of hopper 2 and carries out subsequent processing process.
As shown in Fig. 2, plasma purifier 5 includes rack 501, the cabinet that rack 501 is equipped in the present embodiment
502, cabinet 502 includes plasma electric field room 503, is equipped with positive electrode 504 and negative electrode inside the plasma electric field room 503
505, plasma electric field room top is equipped with feed entrance 506, and the lower section of the cabinet is equipped with air outlet 508.
Dioxin enters plasma purifier 5, axial air inlet by feed entrance 506 so as to gas stripping after cooling
Play the role of carry solid phase object charging, between the spiral positive electrode 504 on top and the annular electrode 505 of bottom between
Gap spacing is 3mm, and electric field electric power output voltage is 8-17kV, and under the action of high pressure, the gas in gap is breakdown, forms
Stable electric arc, when electric arc stretches the annular section and bottom negative electrode 505 of connection top positive electrode 504, in reaction unit
Axial centerline forms a stable heating region.The electric field generates the free radical with strong oxidizing property of enrichment
And a series of physical such as ionization, scission of link, cracking, oxidation occur for the high active particle such as atom, molecule of excitation state and dioxin
Chemical reaction, dioxin molecular scission, be cracked to form that other toxicity are smaller or nontoxic small molecule or fragment group pass through it is discarded
Absorption storehouse 507 is discharged after adsorbing by air outlet 508.
More specifically, exhaust gas absorption storehouse 507 is provided with zeolite molecular sieve, and exhaust gas absorption storehouse 507 further will
The exhaust gas that plasma discharge generates is detained, adsorbs, and further cooperates with advanced treating, realizes the purpose of mechanical degradation.
Although an embodiment of the present invention has been shown and described, it is obvious to a person skilled in the art that it is of the invention
It is not limited to the details of above-mentioned exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it can
To implemente the invention in other specific forms.Therefore, in all respects, the embodiments should be taken as exemplary,
And be non-limiting, the scope of the invention being indicated by the appended claims rather than by the foregoing description, it is intended that will fall in
All changes in the meaning and scope of the equivalent requirements of the claims are included within the present invention.It should not be by appointing in claim
What appended drawing reference is construed as limiting the claims involved.
Claims (6)
1. the removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash, it is characterised in that including desorption device, hopper,
First-class heat exchanger, secondary heat exchanger, plasma cleaning equipment and mercury recyclable device.
2. the gaseous phase outlet of the desorption device connects the heat source import of first-class heat exchanger, the heat of the first-class heat exchanger by blower
The heat source import of source outlet connection secondary heat exchanger, the thermal source outlet of the secondary heat exchanger are first connected with mercury recyclable device in turn
Plasma cleaning equipment is connected, the cold source import for stating heat exchanger is connected to cooling medium, and the solid-phase outlet of the desorption device connects
Run in hopper.
3. a kind of method for mercury and dioxin in deep purifying flying dust as described in claim 1, it is characterised in that: described
Plasma purifier includes rack, and the rack is equipped with cabinet, and the cabinet includes plasma electric field room, the plasma
Feed entrance is equipped with above electric field room, inside is equipped with positive electrode and negative electrode, and the lower section of the cabinet is equipped with air outlet.
4. a kind of method for mercury and dioxin in deep purifying flying dust as claimed in claim 2, it is characterised in that: described
Positive electricity extremely spiral positive electrode in plasma electric field room, the extremely annular negative electrode of negative electricity.
5. a kind of method for mercury and dioxin in deep purifying flying dust as claimed in claim 3, it is characterised in that: described
In vertical state, the central axis extension line of positive electrode passes through the annular center of negative electrode to positive and negative electrode.
6. a kind of method for mercury and dioxin in deep purifying flying dust as claimed in claim 2, it is characterised in that: described
Air outlet is equipped with exhaust gas and adsorbs storehouse, and the absorption storehouse is provided with adsorbent, can further increase the effect of degradation purification exhaust gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910000222.6A CN109848175A (en) | 2019-02-22 | 2019-02-22 | The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash |
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| CN201910000222.6A CN109848175A (en) | 2019-02-22 | 2019-02-22 | The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298741A (en) * | 2020-02-27 | 2020-06-19 | 浙江大学 | Plasma liquid phase treatment device and method for fly ash |
| CN113354014A (en) * | 2021-05-06 | 2021-09-07 | 浦恩远 | Water sample mercury vapor stripping and concentrating device convenient to operate |
| CN114737067A (en) * | 2022-03-11 | 2022-07-12 | 苏州西热节能环保技术有限公司 | Device and method for recovering mercury in waste incineration fly ash |
| CN115121593A (en) * | 2022-09-01 | 2022-09-30 | 杭州灰弘环保科技有限公司 | Harmless system and method for low-temperature treatment of household garbage incineration fly ash |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0857228A (en) * | 1994-08-15 | 1996-03-05 | Ishikawajima Harima Heavy Ind Co Ltd | Treatment apparatus for exhaust gas from melting furnace |
| CN200969335Y (en) * | 2006-11-08 | 2007-10-31 | 北京实力源科技开发有限责任公司 | Plasma source |
| CN103272838A (en) * | 2013-05-27 | 2013-09-04 | 浙江大学 | Method and device for repairing contaminated soil with persistent organic pollutants |
| CN104107613A (en) * | 2014-06-23 | 2014-10-22 | 上海遨提新材料技术咨询有限公司 | Asphalt flue gas processing system and processing technology |
| CN105233641A (en) * | 2015-10-21 | 2016-01-13 | 中国科学院北京综合研究中心 | Deep purifying method and device for dioxin and mercury which are generated in waste incineration |
| CN108160663A (en) * | 2017-12-12 | 2018-06-15 | 中国恩菲工程技术有限公司 | The removal methods of flying dust Zhong bioxin and mercury metal |
| CN109482625A (en) * | 2018-12-29 | 2019-03-19 | 北京中洁蓝环保科技有限公司 | A kind of disposal of resources system and method for domestic garbage incineration flyash |
-
2019
- 2019-02-22 CN CN201910000222.6A patent/CN109848175A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0857228A (en) * | 1994-08-15 | 1996-03-05 | Ishikawajima Harima Heavy Ind Co Ltd | Treatment apparatus for exhaust gas from melting furnace |
| CN200969335Y (en) * | 2006-11-08 | 2007-10-31 | 北京实力源科技开发有限责任公司 | Plasma source |
| CN103272838A (en) * | 2013-05-27 | 2013-09-04 | 浙江大学 | Method and device for repairing contaminated soil with persistent organic pollutants |
| CN104107613A (en) * | 2014-06-23 | 2014-10-22 | 上海遨提新材料技术咨询有限公司 | Asphalt flue gas processing system and processing technology |
| CN105233641A (en) * | 2015-10-21 | 2016-01-13 | 中国科学院北京综合研究中心 | Deep purifying method and device for dioxin and mercury which are generated in waste incineration |
| CN108160663A (en) * | 2017-12-12 | 2018-06-15 | 中国恩菲工程技术有限公司 | The removal methods of flying dust Zhong bioxin and mercury metal |
| CN109482625A (en) * | 2018-12-29 | 2019-03-19 | 北京中洁蓝环保科技有限公司 | A kind of disposal of resources system and method for domestic garbage incineration flyash |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111298741A (en) * | 2020-02-27 | 2020-06-19 | 浙江大学 | Plasma liquid phase treatment device and method for fly ash |
| CN111298741B (en) * | 2020-02-27 | 2024-03-29 | 浙江大学 | Plasma liquid phase treatment device and method for fly ash |
| CN113354014A (en) * | 2021-05-06 | 2021-09-07 | 浦恩远 | Water sample mercury vapor stripping and concentrating device convenient to operate |
| CN114737067A (en) * | 2022-03-11 | 2022-07-12 | 苏州西热节能环保技术有限公司 | Device and method for recovering mercury in waste incineration fly ash |
| CN115121593A (en) * | 2022-09-01 | 2022-09-30 | 杭州灰弘环保科技有限公司 | Harmless system and method for low-temperature treatment of household garbage incineration fly ash |
| CN115121593B (en) * | 2022-09-01 | 2022-11-29 | 杭州灰弘环保科技有限公司 | Harmless system and method for low-temperature treatment of household garbage incineration fly ash |
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Application publication date: 20190607 |