CN108025337A - Method for handling the equipment of flying dust and flying dust being handled by the equipment - Google Patents
Method for handling the equipment of flying dust and flying dust being handled by the equipment Download PDFInfo
- Publication number
- CN108025337A CN108025337A CN201680053012.8A CN201680053012A CN108025337A CN 108025337 A CN108025337 A CN 108025337A CN 201680053012 A CN201680053012 A CN 201680053012A CN 108025337 A CN108025337 A CN 108025337A
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- flyash
- component
- coal ash
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000428 dust Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 213
- 239000010881 fly ash Substances 0.000 claims abstract description 105
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
- 239000002184 metal Substances 0.000 claims abstract description 56
- 238000011084 recovery Methods 0.000 claims abstract description 33
- 239000003245 coal Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 93
- 239000000203 mixture Substances 0.000 claims description 56
- 238000003860 storage Methods 0.000 claims description 56
- 239000010883 coal ash Substances 0.000 claims description 53
- 239000012141 concentrate Substances 0.000 claims description 41
- 238000001035 drying Methods 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 239000013049 sediment Substances 0.000 claims description 38
- 238000004064 recycling Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 24
- 239000002918 waste heat Substances 0.000 claims description 18
- 239000005864 Sulphur Substances 0.000 claims description 16
- -1 sulphur compound Chemical class 0.000 claims description 13
- 239000010882 bottom ash Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002956 ash Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 11
- 229910001385 heavy metal Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 7
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 229910052779 Neodymium Inorganic materials 0.000 description 4
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 4
- 229910052727 yttrium Inorganic materials 0.000 description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 238000004255 ion exchange chromatography Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052773 Promethium Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- HNBFUFIYQWYCDM-UHFFFAOYSA-N oxygen(2-) sulfane titanium(4+) Chemical compound [O--].[O--].S.[Ti+4] HNBFUFIYQWYCDM-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/775—Liquid phase contacting processes or wet catalysis processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- 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
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of equipment for handling flying dust, and a kind of method that flying dust is handled by the equipment.In a specific embodiment, the equipment for being used to handle flying dust includes：Boiler component, it is used to burning coal to discharge exhaust gas and flyash；Sulfuric acid prepares component, it is used to prepare sulfuric acid from discharged exhaust gas；And rare metal recovery component, it recycles rare metal by allowing prepared sulfuric acid to be contacted with flying dust.
Description
Technical field
The present invention relates to a kind of fine coal ash handling plant and a kind of method by the equipment treated coal ash.
Background technology
Rare metal refers to the useful metallic element of low output.Due to separating the complex process of rare metal, need
Want great amount of cost.However, recently, due to the utilization of nuclear energy, electronic engineering, space development etc., as industrial essential material to dilute
The demand for having metal is continuously increased.Therefore, make efforts to obtain rare metal from various extraction sources.Existing seawater, high concentration
The important extraction source as rare metal such as brine, deep-sea ore condensate polymer, underground ore.
Meanwhile the annual caused about 9,000,000 tons of flyash (ash) of South Korea have element present in coal due to material
Property and concentrate, and the noble metal such as lithium and rare metal etc. concentration and property with which.Flyash is typically used as making
Make the material of cement and the construction material such as road filler.However, since its not recyclable garbage loading embeading amount reaches
Annual millions of tons, therefore take some countermeasures for needs the problem of lacking landfill in power plant, development of new applications technology.
Therefore due to such as natural resources element less extraction source South Korea's condition, to from annual caused fine coal
The concern increase of the method for ash extraction element.When providing said extracted technology, not only in economic feasibility and also for
The method aspect for providing national strategic material is all very significant.
Meanwhile coal is used as the main material of the boiler of coal-fired power plant.It has been known that, coal contains about 1.0% or less
About the 70% of sulfide and sulfide is discharged during combustion process as exhaust gas.Currently, although in above-mentioned coal-fired process
Caused oxysulfide is used to manufacture plaster etc. using wet desulphurization equipment, but is opened for the technology of high added value economical production
Hair is required.
The prior art related to the present invention is in No. 2009-0106470 (on October 09th, 2009 of Korean Patent Publication case
Issue, it is entitled：The method and processing system of treated coal ash) in disclose.
The content of the invention
[technical problem]
One aspect of the invention is fine coal ash handling plant is provided, the fine coal ash handling plant is had and will be produced using coal
The excellent efficiency for the exhaust gas recycling discharged during raw thermal power generation.
Can be using the fine coal ash handling plant of exhaust gas generation high quality sulfuric acid another aspect of the invention is providing.
Another aspect of the invention has the fine coal for the excellent efficiency for recycling rare metal included in exhaust gas to provide
Ash handling plant.
The method that the further aspect of the present invention carrys out treated coal ash to provide by using above-mentioned fine coal ash handling plant.
[technical solution]
One aspect of the present invention is related to fine coal ash handling plant.In one embodiment, fine coal ash handling plant includes：
Boiler, its burn coal and discharge exhaust gas and flyash；Sulfuric acid generating means, it produces sulfuric acid from the exhaust gas discharged；It is and rare
Metal recovery component, it is contacted to recycle rare metal by sulfuric acid caused by permission with the flyash.
In one embodiment, fine coal ash handling plant can further comprise dust-collection element, and the dust-collection element is connected to
Boiler and the dust from discharged exhaust gas is collected so that exhaust gas is separated into flyash and processing gas including sulphur compound.
In one embodiment, fine coal ash handling plant can further comprise sulfuric acid storage unit, the sulfuric acid storage part
Part is connected to sulfuric acid caused by sulfuric acid generating means and storage；And first storage component, it recycles and is stored in dust-collection element
In separated flyash and the flyash from boiler.
In one embodiment, rare metal recovery component may include the first reaction part, it is by allowing respectively from
The flyash of one storage unit transmission and the sulfuric acid of sulfuric acid storage unit transmission are in contact with each other to produce the first mixture；First point
From component, the first mixture is sent to first separating component and through being separated into the first sediment and the first extract；First
Drying part, the first sediment are sent to first drying part and are dried and produce the first recycling flyash；And
Concentrate generating means, the first extract are sent to the concentrate generating means and are dried and to produce rare metal dense
Contracting thing.
In one embodiment, flyash and sulfuric acid can about 1:0.1 to about 1:10 weight ratio is in contact with each other.
In one embodiment, rare metal recovery component can further comprise：First flyash storage unit, first again
Circulation flyash is sent to and is stored in the first flyash storage unit；And concentrate storage unit, rare metal are dense
Contracting thing is sent to and is stored in the concentrate storage unit.
In one embodiment, flyash may include one or more of bottom ash and flying dust.
In one embodiment, fine coal ash handling plant can further comprise：Second storage component, it recycles and stores powder
Coal ash；Second reaction part, it is transmitted by the flyash and sulfuric acid storage unit for allowing to transmit from second storage component respectively
Sulfuric acid be in contact with each other to produce the second mixture；Second separating component, the second mixture are sent to second separation unit
Part and it is separated into the second sediment and the second extract；And second drying part, the second sediment be sent to the second drying part and
It is dried to produce the second recycling flyash.Herein, the second extract may pass to concentrate generating means and progress
It is dry.
In one embodiment, fine coal ash handling plant can further comprise reacting heat recovery component, and the reaction heat returns
Receive component recycling caused reaction heat when producing sulfuric acid by sulfuric acid generating means.Herein, can be used by reaction heat recovery section
Drying source of the reaction heat of part recycling as the first drying part, the second drying part and concentrate generating means.
In one embodiment, fine coal ash handling plant can further comprise Waste Heat Recovery component, the Waste Heat Recovery portion
Part is arranged on the front end of dust-collection element and recycles the waste heat from the exhaust gas of boiler emission.Herein, can be used by Waste Heat Recovery component
Drying source of the waste heat of recycling as the first drying part, the second drying part and concentrate generating means.
Another aspect of the present invention is related to by fine coal ash handling plant come the method for treated coal ash.In one embodiment
In, method includes：By collecting come since the exhaust gas is separated into powder by the dust of the exhaust gas of the boiler emission of coal-fired power plant
Coal ash and the processing gas including sulphur compound；Sulfuric acid is produced by processing gas；By allowing flyash and sulfuric acid contact
To produce mixture；From mixture separating sediment and extract, and dry each of sediment and extract.
In one embodiment, flyash may include one or more of bottom ash and flying dust.
In one embodiment, the generation of sulfuric acid may include：Is produced by the way that oxygen-containing gas is incorporated into processing gas
One admixture of gas；Second gas mixture is produced by heating first gas mixture in the presence of a catalyst；
And second gas mixture is allowed to be contacted with water.
In one embodiment, flyash and sulfuric acid can about 1:0.1 to about 1:10 weight ratio is in contact with each other.
In one embodiment, recycling flyash can be produced by dry sediment, and can by dried extract come
Recycle rare metal.
In one embodiment, it may be used at caused reaction heat when producing sulfuric acid and dries sediment and extract.
In one embodiment, can be come by using the waste heat of exhaust gas and one or more of the auxiliary steam heat of boiler
Dry sediment and extract.
[advantageous effects]
Application by fine coal ash handling plant according to the present invention come treated coal ash method when, due to can be by making
Produced high quality sulfuric acid with being contained in from the flyash in the exhaust gas of the boiler emission of coal-fired power plant and sulphur compound and can be led to
Cross and high-purity recycling flyash and rare metal is recycled from flyash using sulfuric acid, therefore provide in resource reclaim excellent
Efficiency and economic feasibility, enabling while realize the generation and utilization of pollutant process and high added value accessory substance.
Brief description of the drawings
Fig. 1 is fine coal ash handling plant according to an embodiment of the invention.
Fig. 2 is fine coal ash handling plant according to another embodiment of the invention.
Embodiment
[most preferred embodiment]
In the description of the present invention, this is obscured with may not be necessary in the component for thinking well-known technique or correlation technique
It will be omitted during the essence of invention and some of its explained in detail.
Further, since the term being described below is the defined term in the case of the function in view of the present invention
And can be changed according to the purpose of user and operator, practice etc., therefore can be based in the specification of the description present invention
Hold to determine its definition.
Fine coal ash handling plant
One aspect of the invention is provide fine coal ash handling plant.Fig. 1 is powder according to an embodiment of the invention
Treatment of Coal Ash equipment.With reference to figure 1, fine coal ash handling plant 1000 includes：Boiler 101, its by burn coal discharge exhaust gas and
Flyash；Sulfuric acid generating means 201, it produces sulfuric acid from the exhaust gas discharged；And rare metal recovery component (not shown), its
Sulfuric acid caused by permission is contacted with flyash to recycle rare metal.
Exhaust gas may include rare metal, ash (flyash) and sulphur compound.In addition, rare metal may include rare earth metal
And organic metal.In embodiment, sulphur compound may include sulphur (S), hydrogen sulfide (H2S), sulfur dioxide (SO2) etc..
In one embodiment, flyash may include one or more of bottom ash and flying dust.
In one embodiment, fine coal ash handling plant 1000 can further comprise dust-collection element 102, the dust-collection element
Be connected to boiler 101 with by collect from the dust of discharge exhaust gas be separated into flyash and including sulphur compound
Processing gas.
In one embodiment, can be heated by preheater (not shown) by the exhaust gas of boiler emission and flowable to dust
In component 102.When heating exhaust gas, the efficiency of collection efficiency and sulfuric acid the generation process of dust-collection element 102 can be excellent.
It may include dust-collection element 102 with by collecting the exhaust gas the dust of exhaust gas that is discharged since boiler 101
It is separated into flyash and the processing gas including sulphur compound.Dust-collection element 102 may include general dust collect plant.For example, it can make
With electrostatic (electric dust) precipitator (EP).
In one embodiment, may be flying dust by 102 separated flyash of dust-collection element.
In one embodiment, fine coal ash handling plant 1000 can further comprise sulfuric acid storage unit 202, it is connected to
Sulfuric acid generating means 201 is to store produced sulfuric acid；And first storage component 301, it recycles and stores by dust-collection element 102
And 101 separated flyash of boiler.
In one embodiment, by 102 separated processing gas of dust-collection element it is flowable into sulfuric acid generating means 201 with
Produce sulfuric acid H2SO4, the sulfuric acid can be transmitted to and be stored in sulfuric acid storage unit 202.In one embodiment, collecting
The rear end of dirt component 102 sets flow distribution device (not shown) so that can pass through the operational circumstances in assignment of traffic point
Match somebody with somebody and aspirate must the processing gas of flow rate produce sulfuric acid.In addition, it is flow to by 102 separated flyash of dust-collection element
And it is stored in first storage component 301.In addition, flyash can be recycled at its or be transmitted to landfill to be lost
It is dropped when abandoning.
In one embodiment, rare metal recovery component may include the first reaction part 302, it allows respectively from first
The sulfuric acid for flyash and sulfuric acid the storage unit transmission that storage unit 301 transmits is in contact with each other and produces the first mixture；First
Separating component 303, the first mixture are sent to first separating component and are separated into the first sediment and the first extract；The
One drying part 304, the first sediment are sent to first drying part and are dried and produce the first recycling fine coal
Ash；And concentrate generating means 401, the first extract are sent to the concentrate generating means and are dried and produce dilute
There is metal concentrate.
With reference to figure 1, the sulfuric acid in the flyash being stored in first storage component 301 and sulfuric acid storage unit 202 is passed
It is sent to the first reaction part 302 and is in contact with each other to produce the first mixture.In one embodiment, flyash and sulfuric acid can be with
With about 1:0.1 to about 1:10 weight ratio is in contact with each other.Within this range, a huge sum of money included in flyash can easily be leached
Belong to.For example, flyash can be with about 1 with sulfuric acid:1 to about 1:5 weight ratio is in contact with each other.
The first mixture transmitted is separated into the first sediment and the first extract by the first separating component 303.First point
Can be general separating component from component 303.For example, separation of solid and liquid component can be used.
The first drying part 304 is sent to by 303 separated first sediment of the first separating component and is dried by it
To produce the first recycling flyash.
In addition, concentrate generating means 401 is sent to and by it by 303 separated first extract of the first separating component
It is dried to recycle rare metal included in the first extract.
With reference to figure 1, concentrate storage unit (not shown) can further comprise：First flyash storage unit 305, it is dry
The first sediment be sent to and be stored in the first flyash storage unit；And concentrate storage unit 402, rare metal
Concentrate is sent to and is stored in the concentrate storage unit.
In one embodiment, the rare metal concentrate being stored in concentrate storage unit 402 can be transmitted to dilute
There is metal recovery component to recycle rare metal.In one embodiment, rare metal recovery component can by following one or
More persons to recycle rare metal from rare metal concentrate：Fractional crystallization, fractional precipitation, selective oxidation reduction, deionization are made
With, ion-exchange chromatography, solvent extraction and extraction chromatography.
Fig. 2 is fine coal ash handling plant 2000 according to another embodiment of the invention.With reference to figure 2, flyash processing
Equipment 2000 can further comprise：Second storage component 601, it recycles and stores from the bottom ash of the discharge of boiler 101 and by dust
One or more of 102 separated flying dust of component；Second reaction part 602, it allows to pass from second storage component 601 respectively
The sulfuric acid for flyash and sulfuric acid storage unit 202 transmission sent is in contact with each other and produces the second mixture；Second separating component
603, the second mixture is sent to second separating component and through being separated into the second sediment and the second extract；And second is dry
Dry component 604, the second sediment are sent to the second drying part and are dried to produce the second recycling flyash.Second carries
Take thing to may pass to concentrate generating means 401 and be dried wherein.
In addition, fine coal ash handling plant 2000 can further comprise the second flyash storage unit 605, dry second is heavy
Slag is sent to and is stored in the second flyash storage unit.
In one embodiment, the flyash for being transmitted to second storage component 601 may be bottom ash.In addition, from boiler 101
The flyash of discharge can be recycled at its or be dropped when being sent to landfill to abandon.
With reference to figure 1 and 2, each of fine coal ash handling plant 1000 and 2000 can further comprise reacting heat recovery section
Part 501, the reaction heat recovery component 501 recycle the caused reaction heat when producing sulfuric acid by sulfuric acid generating means 201.
With reference to figure 1 and 2, in one embodiment, it can be used and be used as the by the reaction heat that reaction heat recovery component 501 recycles
The drying source of one drying part 304, the second drying part 604 and concentrate generating means 401.Reaction heat is being used as dry
During scorching source, its treatment effeciency and economic feasibility can be excellent.
In one embodiment, fine coal ash handling plant 1000 can further comprise Waste Heat Recovery component (not shown), institute
State Waste Heat Recovery component and be arranged on the front end of dust-collection element 102 to recycle the waste heat and boiler 101 of the exhaust gas discharged from boiler 101
One or more of auxiliary steam heat.In one embodiment, it may be used at the reaction heat recycled at Waste Heat Recovery component
Drying and heat source as the first drying part 304, the second drying part 604 and concentrate generating means 401.
In one embodiment, the temperature of auxiliary steam can be about 100 DEG C to about 450 DEG C, and give up from what boiler 101 discharged
The temperature of gas can be about 300 DEG C to about 450 DEG C.When using the waste heat of exhaust gas as drying source, its treatment effeciency and economy
Feasibility can be excellent.
The method of treated coal ash
Another aspect of the present invention is related to the method for carrying out treated coal ash by using fine coal ash handling plant.In a reality
Apply in example, flyash processing method includes：From gas sampling dust (S101), sulfuric acid (S102) is produced, produces mixture
(S103), separating mixture (S104) and dry separated mixture (S105).In more detail, flyash processing method bag
Include：By collect come since the dust of the exhaust gas of the boiler emission of coal-fired power plant by the exhaust gas be separated into flyash and including
The processing gas (S101) of sulphur compound；Sulfuric acid (S102) is produced by processing gas；By allowing flyash to be connect with sulfuric acid
Touch to produce mixture (S103)；From mixture separating sediment and extract (S104)；And dry sediment with it is every in extract
One (S105).
Hereafter, it will be described in detail each operation of flyash processing method.
From gas sampling dust (S101)
In this operation, collect since the dust of the exhaust gas of the boiler emission of coal-fired power plant and exhaust gas is separated into powder
Coal ash and the processing gas including sulphur compound.
Produce sulfuric acid (S102)
In this operation, sulfuric acid is produced by processing gas.In one embodiment, can be produced by general technology
Sulfuric acid.For example, sulfuric acid can be produced by wet processing.Such as, it may include (a) produces first gas mixture, and (b) produces the
Two admixture of gas, and (c) aquation.In more detail, sulfuric acid, including following operation can be produced：(a) it is oxygenous by introducing
Body produces first gas mixture；(b) is produced by heating first gas mixture in the presence of a catalyst
Two admixture of gas；And (c) allows second gas mixture to be contacted with water.
(a) first gas mixture is produced
First gas mixture is produced by the way that oxygen-containing gas is incorporated into processing gas.In one embodiment, handle
Included sulphur compound can produce first gas mixture by the reaction shown in reaction 1 hereafter in gas.
[reaction 1]
H2S+1/2O2→H2O+SO2+518KJ/mol
(b) second gas mixture is produced
In operation, mixed by heating first gas mixture in the presence of a catalyst to produce second gas
Thing.In one embodiment, vanadic anhydride (V can be used2O5) it is used as catalyst.In applications catalyst, due to by titanium dioxide
Sulphur is converted into the good efficiency of sulfur trioxide, therefore can produce high quality sulfuric acid.In one embodiment, can be at 300 DEG C to 450
First gas mixture is heated at a temperature of DEG C.When being heated at the temperature disclosed above to first gas mixture, into
The reaction of the reaction 2 of row following article and by sulfur dioxide SO2It is converted into sulfur trioxide SO3Good efficiency, therefore produce high quality
Sulfuric acid.
[reaction 2]
SO2+1/2O2→SO3+99KJ/mol
(c) aquation
In operation, sulfuric acid is produced by allowing second gas mixture to be contacted with water by the reaction of lower text response 3
(H2SO4)." contact " can refer to sulfur trioxide SO3React and be absorbed into water with water.
[reaction 3]
SO3+H2O→H2SO4(g)+101KJ/mol
In addition, can be by further carrying out the concentration process shown in following text response 4 by produced gaseous sulfuric acid system
Into liquid sulfuric acid.
[reaction 4]
H2SO4(g)→H2SO4(l)+90KJ/mol
When producing sulfuric acid as described above, the sulfuric acid with 95% or higher purity can be produced.Sulfuric acid is passed
It is sent to and is stored in sulfuric acid storage unit 202 and then uses it for leaching heavy metal contained in flyash.
In one embodiment, the reaction heat occurred when producing sulfuric acid can be recycled by reacting heat recovery component 501, such as
It is described above.
Produce mixture (S103)
In this operation, mixture is produced by allowing flyash with sulfuric acid contact.It is as described above by dust collecting part
102 separated flyash of part and one or more of the flyash type discharged from boiler 101 can be used as flyash.In flyash
When being in contact with each other as described above with sulfuric acid, can leach and remove in flyash included heavy metal cause it is recyclable high-purity
The sediment of degree.
In one embodiment, flyash and sulfuric acid can about 1:0.1 to about 1:10 weight ratio is in contact with each other.Described
In the range of, heavy metal included in flyash can be readily removable.For example, ash content and sulfuric acid can about 1:1 to about 1:5 weight
Amount ratio is in contact with each other.
Separating mixture (S104)
In one embodiment, from mixture separating sediment and extract., can be by using general solid-liquid in separation
Separating component separates the mixture into sediment and liquid extract.Herein, extract may include rare metal ion.
In one embodiment, rare metal may include one or more of the following：Ruthenium (Ru), rhodium (Rh), palladium
(Pa), silver-colored (Ag), osmium (Os), iridium (Ir), platinum (Pt), golden (Au), scandium (Sc), yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium
(Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and
Lutetium (Lu).
Dry (S105)
In one embodiment, it is each of sediment and extract is dry.
In one embodiment, recycling flyash can be produced by dry sediment, and can by dried extract come
Producing includes the rare metal concentrate of rare metal ion.It can come to recycle from rare metal concentrate by using conventional method
Rare metal.For example, can by using it is one or more of following come from rare metal concentrate recycle rare metal：Step by step
Crystallization, fractional precipitation, selective oxidation reduction, ion-exchange chromatography, solvent extraction and extraction chromatography.
In one embodiment, after by reacting heat recovery component recycling, it may be used at produced when producing sulfuric acid
Reaction heat as drying the heat source of sediment and extract.When using reaction heat as drying source, its treatment effeciency
And economic feasibility can be excellent.
In another embodiment, can be come by using the waste heat of exhaust gas and one or more of the auxiliary steam heat of boiler
Dry sediment and extract.When using the waste heat of exhaust gas as drying source, its treatment effeciency and economic feasibility can be excellent
Good.
In powder application Treatment of Coal Ash method, caused sulphur during the process of included sulphur in the coal that burns can be passed through
Compound produces sulfuric acid, and can provide and produce the process of recycling flyash by removing the heavy metal in flyash
The effective processing and the generation and utilization of high added value accessory substance of pollutant can be achieved at the same time.
[embodiment]
Hereinafter, component and the operation of the present invention will be described in detail with reference to the one exemplary embodiment of the present invention.However, this
The one exemplary embodiment of invention is only preferred embodiment and should be understood that the present invention is not limited thereto.
Example
Treated coal ash is come by using fine coal ash handling plant 2000 as shown in Figure 2.
The exhaust gas discharged from the boiler 101 of coal-fired power plant is separated into by the electrostatic trap in dust-collection element 102
Flyash (flying dust) and the processing gas including sulphur compound.
Flyash is sent to and is stored in first storage component 301, and processing gas is flow to sulfuric acid generating unit
Part 201 is to produce sulfuric acid.In more detail, first gas mixture is produced by the way that oxygen-containing gas is incorporated into processing gas, led to
Cross there are catalyst (vanadic anhydride V2O5) in the case of first gas mixture is heated to 400 DEG C of temperature to produce
Two admixture of gas, gaseous sulfuric acid is produced by allowing second gas mixture to be contacted with water, and passes through condensing gaseous sulfuric acid
To produce liquid sulfuric acid, and the liquid sulfuric acid is allowed to flow in sulfuric acid storage unit 202 to be stored therein.Herein, lead to
Cross reaction heat recovery component 501 and recycle the reaction heat produced during sulfuric acid generation process.
The flyash transmitted from first storage component 301 and the sulfuric acid from the transmission of sulfuric acid storage unit 202 are through allowing with 1:2
Weight ratio be in contact with each other to produce the first mixture.Hereafter, mixture is sent to the first separating component 303 and is separated into
One sediment and the first extract.First sediment is sent to the first drying part 304 and is dried to produce the first recycling
Flyash, the first extract are sent to concentrate generating means 401 and are dried to produce rare metal concentrate.First
Recycling flyash is transmitted to and is stored in the first flyash storage unit 305, and rare metal concentrate is sent to and deposits
It is stored in concentrate storage unit 402.
In addition, the flyash (bottom ash) discharged from boiler 101 is stored in second storage component 601, and then distinguish
The sulfuric acid that the flyash and sulfuric acid storage unit 202 transmitted from second storage component 601 transmits is sent to the second reaction part
602 and through allowing with 1:2 weight ratio is in contact with each other to produce the second mixture.Hereafter, the second mixture is sent to second
Separating component 603 and it is separated into the second sediment and the second extract.Second sediment is sent to the second drying part 604 and carries out
To produce the second recycling flyash, the second extract is sent to concentrate generating means 401 and is dried to produce for drying
Raw rare metal concentrate.Second recycling flyash is sent to and is stored in the second flyash storage unit 605.
Herein, dried using by the reaction heat that reaction heat recovery component 501 recycles as the first drying part 304, second
The drying source of component 604 and concentrate generating means 401.
Table 1 below is the result of analysis rare metal content included in the flyash that coal fired power generation factory and office produce.
[table 1]
Favg refers to the average rare metal content (mg/Kg) of flying dust, and Bavg refers to the average rare metal content of bottom ash
(mg/Kg), and Pavg refers to the average rare metal content of the pool grey (being stored in the flyash in fly ash waste landfill)
(mg/Kg).Reference table 1, contains a large amount of rare metals in flyash, and especially, it can thus be seen that the content of yttrium and neodymium is higher.
Table 2 below be measured when by allowing flyash and sulfuric acid contact to produce mixture yttrium in rare metal and
The result of the recovery rate of neodymium.In more detail, it is illustrated in and the water of the flying dust of 10mg and 200mg is mixed and produced by using sulfuric acid
The result of the recovery rate of the yttrium and neodymium between rare metal is measured after extract.
[table 2]
Reference table 2, it can thus be seen that the recovery rate of rare metal is excellent when producing mixture according to the present invention.
Table 3 below is the knot according to heavy metal contained in the type-collection flyash of the solvent contacted with flyash
Fruit, and to be flyash be in contact with each other table 4 below with solvent and leaches the result of the experiment of heavy metal.
[table 3]
[table 4]
Result shown in reference table 3 and 4, it can thus be seen that when the sulfuric acid produced according to the present invention is contacted with flyash, carry
For extracting and going the excellent effect of removing heavy metals so that high-quality can be produced again by removing heavy metal contained in flyash
Circulate flyash.
It will be appreciated that the simple modifications and changes to the present invention can be easily made by those skilled in the art, and
All modifications and change may include within the scope of this invention.
Claims (17)
- A kind of 1. fine coal ash handling plant, it is characterised in that including：Boiler, its burn coal and discharge exhaust gas and flyash；Sulfuric acid generating means, it produces sulfuric acid from discharged exhaust gas；AndRare metal recovery component, it is contacted to recycle rare metal by sulfuric acid produced by permission with the flyash.
- 2. fine coal ash handling plant according to claim 1, it is characterised in that further include dust-collection element, the dust collecting part Part be connected to the boiler and collect the dust from the discharged exhaust gas with by the exhaust gas be separated into flyash and including The processing gas of sulphur compound.
- 3. fine coal ash handling plant according to claim 2, it is characterised in that further include：Sulfuric acid storage unit, it is connected to sulfuric acid caused by the sulfuric acid generating means and storage；AndFirst storage component, it recycles and is stored in separated flyash and the fine coal from the boiler in the dust-collection element Ash.
- 4. fine coal ash handling plant according to claim 3, it is characterised in that the rare metal recovery component includes：First reaction part, it passes through the flyash for allowing to transmit from the first storage component respectively and the sulfuric acid storage part The sulfuric acid of part transmission is with being in contact with each other to produce the first mixture；First separating component, first mixture are transmitted to first separating component and are separated into the first sediment and first carry Take thing；First drying part, first sediment are transmitted to first drying part and are dried and produce the first recycling Flyash；AndConcentrate generating means, first extract are transmitted to the concentrate generating means and are dried and produce rare Metal concentrate.
- 5. Treatment of Coal Ash equipment according to claim 1, it is characterised in that the flyash and the sulfuric acid are with about 1: 0.1 to about 1:10 weight ratio is in contact with each other.
- 6. fine coal ash handling plant according to claim 4, it is characterised in that the rare metal recovery component also wraps Include：First flyash storage unit, the first recycling flyash are transmitted to and are stored in the first flyash storage part Part；AndConcentrate storage unit, the rare metal concentrate are transmitted to and are stored in the concentrate storage unit.
- 7. fine coal ash handling plant according to claim 1, it is characterised in that the flyash is included in bottom ash and flying dust One of or more persons.
- 8. fine coal ash handling plant according to claim 4, it is characterised in that further include：Second storage component, it recycles and stores the flyash；Second reaction part, it passes through the flyash for allowing to transmit from the second storage component respectively and the sulfuric acid storage part The sulfuric acid of part transmission is with being in contact with each other to produce the second mixture；Second separating component, second mixture are transmitted to second separating component and are separated into the second sediment and second carry Take thing；AndSecond drying part, second sediment are transmitted to the drying part and are dried to produce the second recycling fine coal Ash,Wherein described second extract is transmitted to the concentrate generating means and is dried.
- 9. the fine coal ash handling plant according to claim 1 or 8, it is characterised in that reaction heat recovery component is further included, its Recycling caused reaction heat when producing sulfuric acid by the sulfuric acid generating means,The reaction heat by the reaction heat recovery component recycling is wherein used as first drying part, described second The drying source of drying part and the concentrate generating means.
- 10. fine coal ash handling plant according to claim 9, it is characterised in that further include Waste Heat Recovery component, it is set In the front end of the dust-collection element and the waste heat from the exhaust gas of the boiler emission is recycled,The waste heat by Waste Heat Recovery component recycling is wherein used as first drying part, second drying The drying source of component and the concentrate generating means.
- A kind of 11. method of treated coal ash, it is characterised in that including：By collect come since the dust of the exhaust gas of the boiler emission of coal-fired power plant by the exhaust gas be separated into flyash and Processing gas including sulphur compound；Sulfuric acid is produced by the processing gas；Mixture is produced by allowing the flyash with the sulfuric acid contact；From the mixture separating sediment and extract；AndDry each of the sediment and the extract.
- 12. according to the method for claim 11, it is characterised in that the flyash is including one or more in bottom ash and flying dust Person.
- 13. according to the method for claim 11, it is characterised in that the generation of the sulfuric acid includes：First gas mixture is produced by the way that oxygen-containing gas is incorporated into the processing gas；Second gas mixture is produced by heating the first gas mixture in the presence of a catalyst；AndThe second gas mixture is allowed to be contacted with water.
- 14. according to the method for claim 11, it is characterised in that the flyash and the sulfuric acid are with about 1:0.1 to about 1:10 weight ratio is in contact with each other.
- 15. according to the method for claim 11, it is characterised in that recycling fine coal is produced by the drying sediment Ash, andRare metal is recycled by the drying extract.
- 16. according to the method for claim 11, it is characterised in that use caused reaction heat when producing the sulfuric acid To dry the sediment and the extract.
- 17. according to the method for claim 11, it is characterised in that use the waste heat of the exhaust gas and the auxiliary of the boiler One or more of steam heat dries the sediment and the extract.
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| KR10-2015-0131210 | 2015-09-16 | ||
| KR1020150131210A KR101801530B1 (en) | 2015-09-16 | 2015-09-16 | Apparatus for treating coal ash and treatment method for coal ash |
| PCT/KR2016/006724 WO2017047915A1 (en) | 2015-09-16 | 2016-06-23 | Apparatus for treating fly ash, and method for treating fly ash by using same |
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| KR101898224B1 (en) | 2018-08-02 | 2018-09-12 | 케이씨코트렐 주식회사 | Container type Coal Ash Transfer System |
| KR102185716B1 (en) | 2019-02-22 | 2020-12-03 | 운해이엔씨(주) | Apparatus for recycling fly ash having quantum energy generator |
| KR102294433B1 (en) | 2019-03-07 | 2021-08-26 | 김부열 | Apparatus for recycling fly ash having glassy membrane removal |
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| CN1699208A (en) * | 2005-06-24 | 2005-11-23 | 大连理工大学 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
| JP2006255491A (en) * | 2005-03-15 | 2006-09-28 | Dowa Mining Co Ltd | Treatment method for flying ash |
| CN101153714A (en) * | 2006-09-25 | 2008-04-02 | 柏斯材料有限公司 | Coal combustion systems with emissions control and fly ash beneficiation and methods thereof |
| CN102482086A (en) * | 2009-08-06 | 2012-05-30 | 蒂森克虏伯伍德有限公司 | Method And Installation For Producing Sulphuric Acid |
| TW201427758A (en) * | 2013-01-02 | 2014-07-16 | Univ Chung Hwa Med Technology | Treatment method for incinerated ashes |
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| JP2003301225A (en) * | 2002-04-11 | 2003-10-24 | Asahi Pretec Corp | Method for recovering noble metal |
| JP5593100B2 (en) * | 2010-03-17 | 2014-09-17 | バブコック日立株式会社 | Boiler plant |
| FI123432B (en) * | 2011-12-02 | 2013-04-30 | Jyvaeskylaen En Oy | Method for treating ash, in particular fly ash |
| JP5878408B2 (en) * | 2012-03-27 | 2016-03-08 | 太平洋セメント株式会社 | Treatment method for fluidized bed boiler ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006255491A (en) * | 2005-03-15 | 2006-09-28 | Dowa Mining Co Ltd | Treatment method for flying ash |
| CN1699208A (en) * | 2005-06-24 | 2005-11-23 | 大连理工大学 | Method and apparatus for treating urban sewage by means of flue gas desulfurization of power plant and fly ash |
| CN101153714A (en) * | 2006-09-25 | 2008-04-02 | 柏斯材料有限公司 | Coal combustion systems with emissions control and fly ash beneficiation and methods thereof |
| CN102482086A (en) * | 2009-08-06 | 2012-05-30 | 蒂森克虏伯伍德有限公司 | Method And Installation For Producing Sulphuric Acid |
| TW201427758A (en) * | 2013-01-02 | 2014-07-16 | Univ Chung Hwa Med Technology | Treatment method for incinerated ashes |
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