CN109848174A - A kind of method of domestic garbage incineration flyash demercuration - Google Patents
A kind of method of domestic garbage incineration flyash demercuration Download PDFInfo
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- CN109848174A CN109848174A CN201910000221.1A CN201910000221A CN109848174A CN 109848174 A CN109848174 A CN 109848174A CN 201910000221 A CN201910000221 A CN 201910000221A CN 109848174 A CN109848174 A CN 109848174A
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- heat exchanger
- mercury
- demercuration
- desorption device
- domestic garbage
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Abstract
The invention discloses a kind of removal methods of mercury in house refuse flying dust, including desorption device, heat exchanger, freezing type mercury collector and hopper.The gaseous phase outlet of the desorption device is connected to the heat source import of heat exchanger by air-introduced machine, and the thermal source outlet of the heat exchanger is connected to freezing type mercury collector, and the cold source import of the heat exchanger is connected to cooling medium, and the solid-phase outlet of the desorption device is connected to hopper.This method simple process, operates conveniently, highly-safe, and demercuration effect is good, can reduce the pollution of mercury, achievees the effect that mercury resource utilization.
Description
Technical field
The present invention relates to domestic garbage incineration flyash process field, specially a kind of side of domestic garbage incineration flyash demercuration
Method.
Background technique
With the high speed development of China's economic, the energy, resource are largely consumed, and cause some mercury pollution problems or potential
Mercury pollution problem.Mercury and mercuric compounds are one of putative environmentally harmful substances, mercury because its hypertoxicity and its it is long away from
From migration characteristic, needs international community and pass through region and its influence of international cooperation co- controlling and harm.On May 18th, 2017,
The world steps a historic step in terms of preventing and treating mercury pollution, and European Union and its seven member states have approved " the Minamata public affairs about mercury
About "." the Minamata pact about mercury " signed by China is formally effective from August 16th, 2017.The pact comes into force, to mercury
Discharge standard will be increasingly strict.
Currently, being broadly divided into landfill and burning to the garbage disposal in life, it is easy during landfill by middle pollutant
It goes underground, contaminated soil, therefore widely by waste incineration.And a large amount of flying dust can be generated after waste incineration, it is generating
Flying dust in containing there are many chemical substance, and containing 2%~3% heavy metal element, higher than China's typical soil background value with
Content of beary metal in flyash.In the heavy metal that flying dust contains, the Leaching of mercury be easier to it is exceeded, when it is not handled
When being brought directly to downstream process, the waste of resource or direct emission can be brought to cause environmental pollution.Mercury, under room temperature in liquid form
It is present in nature.The property of mercury determines the easy recyclability for the mercury being present in flying dust.Meanwhile the compound of mercury and mercury is made
It has a wide range of applications in industrial production and resident's production for catalyst and additive, therefore, to mercury in incineration firing flying dust
It is collected the discharge amount that not only can control Mercury In The Air, but also the shortage of China's mercury resource can be supplemented, the environment in China is protected
Shield, fulfiling for " the Minamata pact about mercury " suffer from important meaning with mercury resource supplement.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of domestic garbage incineration flyash demercuration, to solve to mention in above-mentioned background
The waste and pollution problem of mercury resource out.
To achieve the goals above, present invention employs following technical solutions:
A kind of method of domestic garbage incineration flyash demercuration, including desorption device, hopper, heat exchanger and freezing type mercury collector.
The gas phase of the desorption device, which goes out, connects heat exchanger, and the thermal source outlet of the heat exchanger connects freezing type mercury collector.
The solid-phase outlet of the desorption device connects hopper.The temperature of the desorption device is controlled at 300-800 DEG C, described de-
It into flying dust quality and air inlet tolerance ratio is 1.2-1.8 in adnexa.
Further, the cold side import of the heat exchanger is passed through cooling medium, and heat exchanger finally cools down temperature of charge control
To 30-60 DEG C.
Further, the freezing type mercury collector is equipped with refrigerating plant, and the freezing type mercury collector is with visual
Liquidometer, bottom be equipped with autocontrol valve.
Further, the refrigerating plant temperature setting of the freezing type mercury collector installation is at -5-20 DEG C.
Detailed description of the invention
Fig. 1 is a kind of block flowsheet signal of the method for domestic garbage incineration flyash demercuration provided in an embodiment of the present invention
Figure；
Fig. 2 is that mercury collector structure is illustrated in a kind of method of domestic garbage incineration flyash demercuration provided in an embodiment of the present invention
Figure.
In figure: 1, desorption device；2, hopper；3, heat exchanger；4, freezing type mercury collector；401, cylinder；402, import；
403, delivery outlet；404, autocontrol valve；405, refrigerating plant；406, sealing protection cover.
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 otherwise clearly defined and limited, term " connected " " connects
Connect " " installation " shall be understood in a broad sense, for example, can be fixedly connected, may be a detachable connection, or be integrally connected；It can be with
It is electrical connection, is also possible to be mechanically connected；It can be the connection inside two elements, can be and be connected between intermediary, or
Person is to be directly connected to.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
As shown in Figure 1, a kind of method of domestic garbage incineration flyash demercuration provided in an embodiment of the present invention is illustrated, including
The solid-phase outlet of desorption device 1, hopper 2, heat exchanger 3 and freezing type mercury collector 4, the desorption device 1 connects hopper 2, institute
The heat source import of the gaseous phase outlet connection heat exchanger 3 of desorption device 1 is stated, the thermal source outlet connection freezing type mercury of the heat exchanger 3 is received
Storage 4.
In this method, incineration firing flying dust is sent into desorption device 1 by conveyer and is heated, the temperature control in desorption device 1
300-800 DEG C processed, flying dust quality and air inlet air quantity ratio are 1:1.0-1.5, and flying dust is in desorption device 1 while heat temperature raising, mercury
And mercury compound reach under the influence of high temperature its boiling temperature decompose after form gaseous mercury, the Elemental Mercury after vaporization by air-introduced machine turn
Progress primary cooling cooling in heat exchanger 3 is moved to, is cooled to 30-60 DEG C, mercury at this time is collected in freezing type in liquid form
In mercury collector 4, the collecting amount of mercury is judged by visual liquidometer, by 4 bottom of freezing type mercury collector after collecting to a certain extent
The discharge gate in portion is discharged.Solid material in desorption device 1 is then delivered to the discharge of hopper 2 and carries out subsequent processing process.
As shown in Fig. 2, freezing type mercury collector 4 includes cylinder 401 in the present embodiment, the left side of cylinder 401 is equipped with import
402, the lower right of cylinder 401 is equipped with the delivery outlet 403 for being automatically brought into operation valve 404, and 401 side of cylinder is equipped with refrigeration dress
Set 405.
Specifically, cylinder 401 has visual liquidometer, the metallic luster of liquid mercury metal may determine that cylinder
The collecting amount of mercury in 401 carries out interruption or continuous collection by autocontrol valve 404.
More specifically, the characteristic of freezing type mercury collector 4 is the sealing protection cover 406 that configuration has leakproofness, and is equipped with
Refrigerating plant 405 can cool down, keep constant -5-20 DEG C of temperature for a long time.
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. a kind of method of domestic garbage incineration flyash demercuration, including desorption device, heat exchanger, freezing type mercury collector and discharge
Bucket.
2. the gaseous phase outlet of the desorption device is connected to the heat source import of heat exchanger by air-introduced machine, the heat source of the heat exchanger goes out
Mouth is connected to freezing type mercury collector, and the cold source import of the heat exchanger is connected to cooling medium, the solid-phase outlet of the desorption device
It is connected to hopper.
3. a kind of method of domestic garbage incineration flyash demercuration as described in claim 1, it is characterised in that: the desorption device
Temperature is controlled at 300-800 DEG C, into flying dust quality and air inlet tolerance ratio is 1.2-1.8 in the desorption device.
4. a kind of method of domestic garbage incineration flyash demercuration as described in claim 1, it is characterised in that: the heat exchanger is most
Cooling temperature of charge control is to 30-60 DEG C eventually.
5. a kind of method of domestic garbage incineration flyash demercuration as described in claim 1, it is characterised in that: the freezing type mercury
Collector is equipped with refrigerating plant, and the freezing type mercury collector has visual liquidometer, and bottom is equipped with autocontrol valve.
6. a kind of method of domestic garbage incineration flyash demercuration as claimed in claim 4, it is characterised in that: the freezing type mercury
The refrigerating plant temperature setting of collector installation is -5-20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000221.1A CN109848174A (en) | 2019-02-22 | 2019-02-22 | A kind of method of domestic garbage incineration flyash demercuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000221.1A CN109848174A (en) | 2019-02-22 | 2019-02-22 | A kind of method of domestic garbage incineration flyash demercuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109848174A true CN109848174A (en) | 2019-06-07 |
Family
ID=66893643
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910000221.1A Pending CN109848174A (en) | 2019-02-22 | 2019-02-22 | A kind of method of domestic garbage incineration flyash demercuration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999993A (en) * | 2016-07-05 | 2016-10-12 | 中国环境科学研究院 | Flue gas demercuration device and method for recycling flue gas mercury through adsorption-desorption self-coupling |
| CN108043864A (en) * | 2017-12-12 | 2018-05-18 | 中国恩菲工程技术有限公司 | The removing system of flying dust Zhong bioxin and mercury metal |
| CN108237137A (en) * | 2018-01-08 | 2018-07-03 | 中国科学院北京综合研究中心 | Flying dust mercury removal device and demercuration method |
| CN208362198U (en) * | 2017-12-28 | 2019-01-11 | 北京建筑材料科学研究总院有限公司 | Garbage flying ash thermal desorption mercury removal systems |
-
2019
- 2019-02-22 CN CN201910000221.1A patent/CN109848174A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999993A (en) * | 2016-07-05 | 2016-10-12 | 中国环境科学研究院 | Flue gas demercuration device and method for recycling flue gas mercury through adsorption-desorption self-coupling |
| CN108043864A (en) * | 2017-12-12 | 2018-05-18 | 中国恩菲工程技术有限公司 | The removing system of flying dust Zhong bioxin and mercury metal |
| CN208362198U (en) * | 2017-12-28 | 2019-01-11 | 北京建筑材料科学研究总院有限公司 | Garbage flying ash thermal desorption mercury removal systems |
| CN108237137A (en) * | 2018-01-08 | 2018-07-03 | 中国科学院北京综合研究中心 | Flying dust mercury removal device and demercuration method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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