CN104772322A - Municipal domestic waste melting treatment technology - Google Patents
Municipal domestic waste melting treatment technology Download PDFInfo
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- CN104772322A CN104772322A CN201510139538.5A CN201510139538A CN104772322A CN 104772322 A CN104772322 A CN 104772322A CN 201510139538 A CN201510139538 A CN 201510139538A CN 104772322 A CN104772322 A CN 104772322A
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- melting treatment
- melt process
- flying dust
- domestic waste
- fly ash
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Abstract
The invention discloses a municipal domestic waste melting treatment technology, and relates to the technical filed of environmental protection. The technology comprises the steps of fly ash solidification and melting treatment. A melting technique is used to recycle heavy metals from fly ash, and other substances in the fly ash are scorified and recycled in order to truly realize waste burning recycling; the heating temperature and the melting treatment time are reasonably selected in the melting treatment process to make the separation rate of heavy metals reach above 98%; and a solidifying agent used in the invention can effectively improve the solidification effect of the fly ash, and the operationality of the whole separation process is strong.
Description
Technical field
The present invention relates to environmental technology field, be specifically related to a kind of domestic waste melt process technique.
Background technology
Along with society and expanding economy, the discharge capacity of rubbish sharply increases, environment for human survival and city sustainable development are had a strong impact on, therefore the process of an urgent demand to rubbish reaches innoxious, subtract appearance minimizing, three of resource changes standard, the processing mode of current countries in the world domestic waste mainly contains: landfill, compost and burning 3 kinds, facts have proved, compost and these 2 kinds of methods of landfill not only take a large amount of soil, consumes time is long, and the percolate of rubbish can cause environment near landfill yard and dung yard and has a strong impact on, destroy ecological environment, garbage incineration technology is the effective ways of garbage decrement process.
Burning disposal is placed in incinerator by rubbish to burn, discharge heat energy, waste heat recovery can heat supply or generating, discharge after gas cleaning, a small amount of residual residue is discharged landfill or is made other purposes, and incineration treatment technology feature is that treating capacity is large, to subtract capacitive good, thoroughly innoxious, and has energy recovery effect, therefore, effective processing mode that burning disposal is innoxious, minimizing and resource is carried out to house refuse.
Current flying dust process method of disposal mainly contains: curing/stabilizing, comprises cement solidification, bitumen solidification, melting and solidification, chemical agent curing/stabilizing, and firming body reaches landfill or recycling after leaching standard; By landfill, comprise acid extractants, alkali extracts, biological and biologic product extracts, high temperature extracts, after extracting, heavy metal can carry out recycling.
But it is thorough to there is separation in melt process of the prior art, the defect that separating rate is slow.
Summary of the invention
Problem to be solved by this invention is to provide a kind of separation thoroughly, the domestic waste melt process technique that separating rate is fast.
To achieve these goals, the technical scheme that the present invention takes for: a kind of domestic waste melt process technique provided, comprises the steps:
(1) flyash curing: add curing agent in the flying dust produced after waste incineration and maintenance 12-16d after mixing, form flying dust pelletizing;
(2) melt process: sent in melting furnace by the flying dust after solidification and carry out melt process, controls heating-up temperature and is 1300-1500 DEG C, stir once, close melting furnace, take out the residue in melting furnace after cold going after 70-90min every 5-8min.
Preferably, in the flying dust pelletizing of described step (1), the content (mass fraction) of curing agent is 4-8%.
Preferably, described curing agent is calcium hydroxide and syrup, wherein, and calcium hydroxide 3-6%, syrup 1-2%.
Adopt technical scheme of the present invention, by fusion technology, the heavy metal recovery in flying dust is utilized, and other material slagging carry out recycling in flying dust, thus really accomplish the recycling of waste incineration, by choose reasonable heating-up temperature and melt process time in melt process, make the separation rate of heavy metal reach more than 98%, selected curing agent can improve the solidification effect of flying dust effectively, and whole separation process is workable.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
embodiment 1:
(1) flyash curing: add curing agent in the flying dust produced after waste incineration and maintenance 12-16d after mixing, form flying dust pelletizing, in described flying dust pelletizing, the content (mass fraction) of curing agent is 7%, further, calcium hydroxide 5%, syrup 2%;
(2) melt process: sent in melting furnace by the flying dust after solidification and carry out melt process, controls heating-up temperature and is 1300-1500 DEG C, stir once, close melting furnace, take out the residue in melting furnace after cold going after 70-90min every 5-8min.
Based on above-mentioned, heavy metal recovery in flying dust is utilized by fusion technology by the present invention, and other material slagging carry out recycling in flying dust, thus really accomplish the recycling of waste incineration, by choose reasonable heating-up temperature and melt process time in melt process, make the separation rate of heavy metal reach more than 98%, selected curing agent can improve the solidification effect of flying dust effectively, and whole separation process is workable.
Obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (3)
1. a domestic waste melt process technique, is characterized in that, comprises the steps:
(1) flyash curing: add curing agent in the flying dust produced after waste incineration and maintenance 12-16d after mixing, form flying dust pelletizing;
(2) melt process: sent in melting furnace by the flying dust after solidification and carry out melt process, controls heating-up temperature and is 1300-1500 DEG C, stir once, close melting furnace, take out the residue in melting furnace after cold going after 70-90min every 5-8min.
2. a kind of domestic waste melt process technique according to claim 1, is characterized in that: in the flying dust pelletizing of described step (1), the content (mass fraction) of curing agent is 4-8%.
3. a kind of domestic waste melt process technique according to claim 2, is characterized in that: described curing agent is calcium hydroxide and syrup, wherein, and calcium hydroxide 3-6%, syrup 1-2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139538.5A CN104772322A (en) | 2015-03-29 | 2015-03-29 | Municipal domestic waste melting treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139538.5A CN104772322A (en) | 2015-03-29 | 2015-03-29 | Municipal domestic waste melting treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104772322A true CN104772322A (en) | 2015-07-15 |
Family
ID=53614263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510139538.5A Pending CN104772322A (en) | 2015-03-29 | 2015-03-29 | Municipal domestic waste melting treatment technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104772322A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217925A (en) * | 2016-08-02 | 2016-12-14 | 天津泰达环保有限公司 | A kind of method of pretreatment before incineration of refuse flyash is melted |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH102537A (en) * | 1996-06-12 | 1998-01-06 | Ishikawajima Harima Heavy Ind Co Ltd | Ash melting furnace |
| JPH11116288A (en) * | 1997-10-07 | 1999-04-27 | Higuchi Seisakusho:Kk | White foamed slag and its production |
| JP2000283425A (en) * | 1999-03-31 | 2000-10-13 | Nkk Corp | Slag hole |
| CN101074457A (en) * | 2006-05-16 | 2007-11-21 | 重庆大学 | Method for smelting and separating refuse-combustion fly-ash heavy metal |
| CN101074776A (en) * | 2006-05-16 | 2007-11-21 | 殷大众 | System and method for detoxifying boiler flyash re-melt soldering slag |
| CN101081397A (en) * | 2006-06-01 | 2007-12-05 | 宜兴市张泽浇注耐火材料厂 | Permanent innocent treatment method of city life rubbish, industrial refuse and incineration fly ash |
| CN101143371A (en) * | 2007-10-23 | 2008-03-19 | 灿环科技有限公司 | Garbage zero-burying terminal using processing method |
-
2015
- 2015-03-29 CN CN201510139538.5A patent/CN104772322A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH102537A (en) * | 1996-06-12 | 1998-01-06 | Ishikawajima Harima Heavy Ind Co Ltd | Ash melting furnace |
| JPH11116288A (en) * | 1997-10-07 | 1999-04-27 | Higuchi Seisakusho:Kk | White foamed slag and its production |
| JP2000283425A (en) * | 1999-03-31 | 2000-10-13 | Nkk Corp | Slag hole |
| CN101074457A (en) * | 2006-05-16 | 2007-11-21 | 重庆大学 | Method for smelting and separating refuse-combustion fly-ash heavy metal |
| CN101074776A (en) * | 2006-05-16 | 2007-11-21 | 殷大众 | System and method for detoxifying boiler flyash re-melt soldering slag |
| CN101081397A (en) * | 2006-06-01 | 2007-12-05 | 宜兴市张泽浇注耐火材料厂 | Permanent innocent treatment method of city life rubbish, industrial refuse and incineration fly ash |
| CN101143371A (en) * | 2007-10-23 | 2008-03-19 | 灿环科技有限公司 | Garbage zero-burying terminal using processing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106217925A (en) * | 2016-08-02 | 2016-12-14 | 天津泰达环保有限公司 | A kind of method of pretreatment before incineration of refuse flyash is melted |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |