CN109675910A - A kind of processing method for heavy metals such as dioxin in flying dust and mercury - Google Patents

A kind of processing method for heavy metals such as dioxin in flying dust and mercury Download PDF

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Publication number
CN109675910A
CN109675910A CN201910045583.2A CN201910045583A CN109675910A CN 109675910 A CN109675910 A CN 109675910A CN 201910045583 A CN201910045583 A CN 201910045583A CN 109675910 A CN109675910 A CN 109675910A
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Prior art keywords
mercury
flying dust
dioxin
heavy metals
flue gas
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CN201910045583.2A
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CN109675910B (en
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黄庆华
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Beijing Industrial University Ring Energy Technology Co Ltd
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Beijing Industrial University Ring Energy Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless
    • B09B3/0083Destroying solid waste or transforming solid waste or contaminated solids into something useful or harmless by means of a thermal treatment, e.g. evaporation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B5/00Operations not covered by single other subclass or by a single other group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B2220/00Type of waste materials treated
    • B09B2220/06Incineration ashes

Abstract

The present invention relates to a kind of processing methods for heavy metals such as dioxin in flying dust and mercury, belong to flying dust processing technology field.Contain dioxin and heavy metal (the significant mercury of such as bio-toxicity, cadmium, lead, chromium and metalloid arsenic) in the flying dust that the industries such as waste incineration, Biohazard Waste burning, industrial waste incineration generate, belong to hazardous solid waste, it is necessary to carry out harmless processing.To realize the pollution problem for thoroughly solving the heavy metals such as dioxin and mercury in flying dust simultaneously, the present invention using high temperature etc. in vitro with low temperature plasma coupling technique, the absorption of ceramic nano material and regeneration techniques, by wet underwater welding device realize mercury salt, mercurial soot etc. that disposal process generates can waste resource utilization.

Description

A kind of processing method for heavy metals such as dioxin in flying dust and mercury
Technical field
The present invention relates to a kind of processing methods for heavy metals such as dioxin in flying dust and mercury, belong to flying dust processing technique Field.
Background technique
In the flying dust that the industries such as waste incineration, Biohazard Waste burning, industrial waste incineration generate containing dioxin and Heavy metal (the significant mercury of such as bio-toxicity, cadmium, lead, chromium and metalloid arsenic) belongs to hazardous solid waste, it is necessary to carry out harmless Change processing.
There are some patents to be related to the processing of heavy metal in flying dust, dioxin and mercury etc..Patent CN101797572A is disclosed A kind of method of corona treatment waste incineration, this method pass through activated carbon adsorber and remove mercury vapour in tail gas, absorption The active carbon of mercury vapour is still dangerous waste, is not thorough to the processing of mercury.Patent CN 1632376A discloses a kind of using cyclone furnace The method of high-temperature fusion incineration of refuse flyash, this method mention dioxin and are decomposed at high temperature and containing dioxin and heavy metal Flying dust carries out thorough melt process in cyclone furnace, it is clear that this method is not suitable for the improvement of mercury pollution.Patent CN 102531389A discloses a kind of method for preparing devitrified glass using electric arc furnaces melting incineration of refuse flyash, and this method is not directed to The processing of mercury contaminants.Patent CN201711321111 discloses the removal methods of dioxin and mercury metal in a kind of flying dust, should Method carries out adsorption treatment to the mercurous tail gas to adsorb the mercury element in the mercurous tail gas, it is preferred to use active carbon carries out Adsorption treatment is equally not thorough the processing of mercury.Therefore, the prior art, which needs one kind, can remove dioxin in flying dust, general weight Metal and the thoroughly scheme of processing mercury pollution, carry out while solving the pollution problem of the heavy metals such as dioxin and mercury in flying dust.
To realize the pollution problem for thoroughly solving the heavy metals such as dioxin and mercury in flying dust simultaneously, the present invention uses high temperature Deng in vitro with low temperature plasma coupling technique, ceramic nano material absorption and regeneration techniques, realized by wet underwater welding device Mercury salt, mercurial soot etc. that disposal process generates can waste resource utilization.
Summary of the invention
It is a primary object of the present invention to a kind of processing methods for heavy metals such as dioxin in flying dust and mercury, with simultaneously Solve the pollution problem of the heavy metals such as dioxin and mercury in flying dust.
A kind of processing method for heavy metals such as dioxin in flying dust and mercury, which is characterized in that including as follows Step:
Step 1, flying dust and constituent adjustment agent are mixed, in the case where 1300~1800 DEG C of high-temperature plasmas act on, makes flying dust In dioxin be thoroughly decomposed into innocuous gas, the glass that the heavy metal in flying dust except the removal of mercury is formed after melting by stable curing In glass body, the flue gas containing mercury vapour is obtained;
Step 2, the flue gas containing mercury vapour is carried out first passing around condensing unit, reduces gas temperature;Later using water removal The water content of system reduction flue gas (water vapour content is down to 3% at room temperature);Flue gas after cooling further decreases dust and contains Amount;Later by low-temperature plasma system oxidation, decomposing pollutant;
It step 3, is realization Hg2+And the deep purifying of other pollutants, low-temperature plasma system treated flue gas into Enter the absorption of ceramic nano material and regenerative system, realizes the qualified discharge of flue gas.
Step 4, mercury salt, mercurial soot that disposal process generates etc. can realize that the recycling of waste is returned by wet underwater welding device It receives.
A kind of processing method for heavy metals such as dioxin in flying dust and mercury, it is characterised in that: use high temperature Deng with low temperature plasma coupling technique, while solving the pollution problem of the heavy metals such as dioxin and mercury in flying dust in vitro;
A kind of processing method for heavy metals such as dioxin in flying dust and mercury, it is characterised in that: solving to fly In ash during the pollution problem of the heavy metals such as dioxin and mercury, aoxidized using low-temperature plasma system, decomposing pollutant, And the resource utilization of the wastes such as mercury salt, mercurial soot is realized by wet underwater welding device.
The beneficial effects of the present invention are:
Processing method of the present invention for the heavy metals such as dioxin and mercury in flying dust, using high temperature etc. in vitro with low temperature etc. from Daughter coupling technique, while the pollution problem of the heavy metals such as dioxin and mercury in flying dust is thoroughly solved, and in processing flying dust The resource utilization of the wastes such as mercury salt, mercurial soot is realized during the heavy metals such as dioxin and mercury.
Detailed description of the invention
Fig. 1 is a kind of process method step explanatory diagram for heavy metals such as dioxin in flying dust and mercury.
In figure: 1, cuber, 2, high-temperature plasma furnace, 3, reaction of low temperature plasma device, 4, ceramic nano adsorption tower, 5, nano ceramics regenerator, 6, wet underwater welding device, 7, mercury salt, mercurial soot, 8, dioxin, 9, vitreum, 10, the cigarette of qualified discharge Gas.
Specific embodiment
The present invention is explained below with reference to embodiment, but the present invention is not limited to following embodiments.
Embodiment 1:
As shown in Figure 1,
(1), it is added and contains SiO2Regulator is mixed into flying dust, and cuber 1 then is added in the flying dust after adjusting and is pressed Block pretreatment;
(2), the flying dust after briquetting is heated in high-temperature plasma furnace 2 and is melted, it is thorough in this stage dioxin 8 Bottom is decomposed into harmless flue gas, and the heavy metal stable curing outside the removal of mercury is in the vitreum 9 that molten mass is cooled into;
(3), mercury fume passes through condensing unit, reduces gas temperature;The aqueous of flue gas is reduced using water scavenging system later It measures (water vapour content is down to 3% at room temperature);Flue gas after cooling further decreases dust content;Enter low temperature later Pollutant in 3 flue gas of plasma reactor is oxidized, decomposes;
(4), enter ceramic nano adsorption tower 4, contained Hg in flue gas from the flue gas that reaction of low temperature plasma device 3 comes out2+ And other pollutants are adsorbed rear qualified discharge 10;
(5), the ceramic nano material of adsorption saturation enters the regenerative system of nano ceramics regenerator 5 in adsorption tower, passes through Wet underwater welding device 6 realizes the resource utilization of the wastes such as mercury salt, mercurial soot 7.

Claims (3)

1. a kind of processing method for heavy metals such as dioxin in flying dust and mercury, which comprises the steps of:
Step 1, flying dust and constituent adjustment agent are mixed, in the case where 1300~1800 DEG C of high-temperature plasmas act on, is made in flying dust Dioxin is thoroughly decomposed into innocuous gas, the vitreum that the heavy metal in flying dust except the removal of mercury is formed after melting by stable curing In, obtain the flue gas containing mercury vapour;
Step 2, the flue gas containing mercury vapour is carried out first passing around condensing unit, reduces gas temperature;Water scavenging system is used later Reduce the water content of flue gas (water vapour content is down to 3% at room temperature);Flue gas after cooling further decreases dust and contains Amount;Later by low-temperature plasma system oxidation, decomposing pollutant;
It step 3, is realization Hg2+And the deep purifying of other pollutants, treated that flue gas enters pottery for low-temperature plasma system The absorption of porcelain nano material and regenerative system, realize the qualified discharge of flue gas.
Step 4, mercury salt, mercurial soot that disposal process generates etc. can realize the resource utilization of waste by wet underwater welding device.
2. a kind of processing method for heavy metals such as dioxin in flying dust and mercury according to claim 1, feature exist In: using high temperature etc. in vitro with low temperature plasma coupling technique, while solving the dirt of the heavy metals such as dioxin and mercury in flying dust Dye problem.
3. a kind of processing method for heavy metals such as dioxin in flying dust and mercury according to claim 1, feature exist In: during the pollution problem of the heavy metals such as dioxin and mercury in solving flying dust, aoxidized using low-temperature plasma system, Decomposing pollutant, and pass through the resource utilization of the wastes such as wet underwater welding device realization mercury salt, mercurial soot.
CN201910045583.2A 2019-01-17 2019-01-17 Treatment method for heavy metals such as dioxin, mercury and the like in fly ash Active CN109675910B (en)

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CN201910045583.2A CN109675910B (en) 2019-01-17 2019-01-17 Treatment method for heavy metals such as dioxin, mercury and the like in fly ash

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0774690B2 (en) * 1989-05-31 1995-08-09 川崎製鉄株式会社 Method and apparatus for melting incinerated ash
JP2000354841A (en) * 1999-06-15 2000-12-26 Japan Atom Energy Res Inst Method for solidifying incineration ash
CN101797572A (en) * 2009-12-31 2010-08-11 中国科学院等离子体物理研究所 Method for treating waste incineration fly ash by using plasmas
CN102774869A (en) * 2011-05-12 2012-11-14 Gs普兰斯特有限公司 Apparatus and method for treating incineration ash using plasma arc
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
CN106402896A (en) * 2016-11-10 2017-02-15 光大环境科技(中国)有限公司 Waste incineration fly ash plasma melting treatment system
CN107030093A (en) * 2017-05-03 2017-08-11 江苏天楹环保能源成套设备有限公司 One kind combines washing and plasma fusion handles flying ash system
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
CN108246058A (en) * 2017-11-08 2018-07-06 中国矿业大学(北京) Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin
CN207709525U (en) * 2017-12-01 2018-08-10 浙江万银节能环保科技有限公司 Heat plasma melts incineration of refuse flyash disposal system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0774690B2 (en) * 1989-05-31 1995-08-09 川崎製鉄株式会社 Method and apparatus for melting incinerated ash
JP2000354841A (en) * 1999-06-15 2000-12-26 Japan Atom Energy Res Inst Method for solidifying incineration ash
CN101797572A (en) * 2009-12-31 2010-08-11 中国科学院等离子体物理研究所 Method for treating waste incineration fly ash by using plasmas
CN102774869A (en) * 2011-05-12 2012-11-14 Gs普兰斯特有限公司 Apparatus and method for treating incineration ash using plasma arc
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
CN106402896A (en) * 2016-11-10 2017-02-15 光大环境科技(中国)有限公司 Waste incineration fly ash plasma melting treatment system
CN107030093A (en) * 2017-05-03 2017-08-11 江苏天楹环保能源成套设备有限公司 One kind combines washing and plasma fusion handles flying ash system
CN108246058A (en) * 2017-11-08 2018-07-06 中国矿业大学(北京) Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin
CN207709525U (en) * 2017-12-01 2018-08-10 浙江万银节能环保科技有限公司 Heat plasma melts incineration of refuse flyash disposal system
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

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