EP3439788A1 - Verfahren und anlage zur aufbereitung von asche aus müllverbrennungsanlagen - Google Patents
Verfahren und anlage zur aufbereitung von asche aus müllverbrennungsanlagenInfo
- Publication number
- EP3439788A1 EP3439788A1 EP17715452.3A EP17715452A EP3439788A1 EP 3439788 A1 EP3439788 A1 EP 3439788A1 EP 17715452 A EP17715452 A EP 17715452A EP 3439788 A1 EP3439788 A1 EP 3439788A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fraction
- ash
- fine
- grain size
- classifier
- 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.)
- Granted
Links
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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
Definitions
- the invention relates to a method and a system for
- the ash is especially about
- the aim is to separate the ash so that several differently contaminated with pollutants shares
- Contaminated pollutants must be disposed of costly, less heavily polluted and possibly unencumbered shares can be recycled profitably.
- Of particular importance in the treatment of ash is the extraction of ferrous and non-ferrous metals from the ashes, which are particularly profitable.
- the treatment of household garbage ash takes place in a wet classification process. For this purpose, the ash is mixed with liquid. Classification is a separation of one
- Particles with a given particle size distribution existing starting material into several fractions of different particle size distribution.
- the classification serves, for example, to separate the ashes into different proportions of pollutants.
- the invention is based on the finding that a
- Processing plant can be operated even more economical if the ash-water mixture not, as in the prior art, only in a good fraction and a
- Grain size thus makes it possible that, according to the invention, only the coarse fraction is fed to a treatment of metal contained in the coarse fraction.
- the middle fraction is advantageous largely exempt from pollutants. The latter are found essentially exclusively in the
- Fine fraction 0.4 mm (or 400 pm), preferably about 0.25 mm (or 250 pm), is. While in the prior art, the middle fraction of the treatment of metal is supplied, in the context of the invention, this fraction is deliberately not used for metal extraction. Surprisingly, it has been found that the middle fraction contains only a few non-ferrous metals, which are deposited by means of the process according to the invention can. As a result, the efficiency is significantly increased over known solutions.
- Onstream classifier preceded by a hydrocyclone By doing
- Classifying device upstream hydrocyclone is not required and preferably not desired, because it is Advantageously, the entire ash-water mixture in the
- the classifier is preferably a three-stage upstream classifier.
- the ash-water mixture is passed to a baffle plate. Below the baffle plate is the baffle plate.
- the ash-water mixture with the grain size between 0 and a maximum of 5 mm can already be delivered mixed by third party to the operator of the plant. However, from the third side is preferred only the ashes from the
- Waste incineration plant provided.
- the ash contains a particle size fraction of roughly 0 to 150 mm, possibly also with some larger components.
- the ash is mixed in a further development of the process in a mash tank with liquid and subsequently classified before the mixture is pumped into the classifier.
- Classification before the pumping process can be done in several stages.
- Grain size distribution between 0 and a maximum of 5 mm, preferably between 0 and about 2 mm.
- This ash-water mixture is pumped without further preparation, in particular without the interposition of a cyclone, in the classifier and classified in this three-stage in the three fractions, as has been described above.
- the coarse fraction is the preparation of in the
- the coarse fraction is first dehydrated and then in a
- the method is in a closed
- Post-purification stage is added to the circulation.
- Foaming can significantly disrupt the process.
- the foaming is also due to light materials contained in the fine fraction.
- the lightweight materials also include, for example, unburned organic components. Due to their low specific gravity, these lightweight materials are included in the fine fraction during the classification, even though they have a larger diameter than the fine fraction, which may well be 3 to 5 mm.
- a particularly advantageous embodiment of the invention is characterized in that the fine fraction after the classifier lightweight materials are removed. The removal is preferably carried out immediately after
- Fine fraction is difficult. This is related to the fact that the fine fraction forms a fine sludge that the
- the ultrafine fraction has a maximum particle size of 70 ⁇ m, advantageously 50 ⁇ m, in particular approximately 30 ⁇ m, or less. This proportion also allows a certain amount of foam. However, it was found that this foam is not stable, but decomposes after a short time without the aid of chemicals. In that regard, the
- the ultrafine fraction is passed into at least one settling tank with at least one settling chamber in which the ultrafine fraction can settle.
- this foam does not produce a stable foam which is process-damaging.
- Guide walls can be perforated. They ensure that the fine sludge is fed to the pump, so that they
- Fine sludge can be removed as completely as possible.
- the fine sludge is withdrawn over a time control.
- Classifier derived fine fraction is classified again and only the resulting ultrafine fraction is passed into the settling tank.
- the high quality of water has, as stated above, a positive influence on the fluid circulation of the process.
- a plant for the treatment of ash from waste incineration plants which according to the invention a classifier for classifying an ash-water mixture in three stages in one
- Coarse fraction a middle fraction with a smaller fraction Grain size of a maximum of 1.2 mm and a fine fraction with a further smaller maximum grain size of not more than 0.4 mm.
- the classifying apparatus is designed and arranged such that the maximum grain size of the center fraction is 1.0 mm and the maximum grain size of the fine fraction is 0.25 mm.
- a preferred embodiment of the invention is characterized in that the system comprises a pump for pumping the water-ash mixture or a free inlet for introducing the ash-water mixture into the classifying device, e.g. has from the lower reaches of a Klassiersiebes and that the pump or the free inlet is so in flow communication with the classifying that the ash-water mixture is pumped or introduced without further treatment in the classifier.
- Test facility and Figure 2: a schematic representation of a classifying device for carrying out the method according to the invention.
- the ash is transported via a conveyor belt 1 in one
- Classifier 3 fed.
- the ash-water mixture is pre-classified in a fraction of about 5 to a maximum of 150 mm, which is spent to a dry treatment, and a fraction of about 0 mm to a maximum of 5 mm.
- the particle size distribution is between 0 and about 2 mm.
- Fraction is pumped as an ash-water mixture by means of a pump 4 in a classifier 5, without the ash-water mixture is subjected to further treatment.
- the classifying device 5 is a
- the classifying device 5 has a filler neck 6, which cooperates with a baffle plate 7.
- the classifying device 5 has a filler neck 6, which cooperates with a baffle plate 7.
- the ash-water mixture is classified in three stages into a coarse fraction 8, a middle fraction 9 with a smaller maximum grain size and a fine fraction 10 with a further smaller maximum grain size.
- Central fraction 9 is a maximum of 1.2 mm, preferably a maximum of 1.0 mm.
- the maximum grain size of the fine fraction 10 is 0.4 mm, preferably about 0.25 mm. A preferred one
- Fine fraction 10 has a particle size distribution of 0 to 0.25 mm
- the middle fraction 9 has a particle size distribution of 0.25 to 1 mm
- the coarse fraction has a particle size distribution of 1 to 2 mm. Only the coarse fraction 8 according to the invention a
- the coarse fraction is dewatered in a dehydrator 11 in a first step.
- Non-Ferrous Separator 15 The non-ferrous metal is collected in a container 16. The rest of the coarse fraction will be described below.
- a sludge-liquid mixture is produced, which is fed by means of a pump 30 to a hydrocyclone stage 31. This is adjusted so that a fraction 32 of at least 20 pm, preferably at least 30 pm, is fed back into the dehydrator 29.
- the ultrafine fraction 28 is passed into a settling tank 33, which has a plurality of settling chambers 34.
- an insert 35 is further arranged with baffles, which taper in the direction of a pump 36 out.
- the pump 36 is supplied.
- the pump 36 is a slurry pump, the
- Fine sludge to the dehydrator 29 pumps After settling the ultrafine fraction 28 in the settling tank 33 remains a liquid 37, which is from the settling tank
- the quality of the liquid 37 is so good that it can be used as process water in the liquid circulation of the liquid
- Total system can be returned, and on the other hand can be disposed of cheaply without further treatment.
- the classifying device is designed and arranged so that against the flow direction of the upstream water
- Grobfr press 8 lowers and is removed from the classifier.
- the remaining ash-water mixture passes into a second (circulating) stage 41 of the classifying device 5.
- stream water is introduced through openings 40 which are directed counter to the lowering movement of the center fraction.
- Non-ferrous separator 42 Third stage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL17715452T PL3439788T3 (pl) | 2016-04-03 | 2017-04-03 | Sposób i instalacja do obróbki popiołów z instalacji do spalania odpadów |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016106054.2A DE102016106054A1 (de) | 2016-04-03 | 2016-04-03 | Verfahren und Anlage zur Aufbereitung von Asche aus Müllverbrennungsanlagen |
| PCT/EP2017/057846 WO2017174502A1 (de) | 2016-04-03 | 2017-04-03 | Verfahren und anlage zur aufbereitung von asche aus müllverbrennungsanlagen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3439788A1 true EP3439788A1 (de) | 2019-02-13 |
| EP3439788B1 EP3439788B1 (de) | 2020-01-01 |
Family
ID=58488994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17715452.3A Active EP3439788B1 (de) | 2016-04-03 | 2017-04-03 | Verfahren und anlage zur aufbereitung von asche aus müllverbrennungsanlagen |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3439788B1 (de) |
| CN (1) | CN108883419B (de) |
| DE (1) | DE102016106054A1 (de) |
| PL (1) | PL3439788T3 (de) |
| RU (1) | RU2721198C2 (de) |
| WO (1) | WO2017174502A1 (de) |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992776A (en) * | 1996-07-26 | 1999-11-30 | Duosengineering (Usa), Inc. | Process for processing ash |
| LU90273B1 (de) * | 1998-08-11 | 2000-02-14 | Wurth Paul Sa | Verfahren zur thermischen Behandlung schwermetall-und eisenoxidhaltiger Reststoffe |
| JP2000301128A (ja) * | 1999-04-15 | 2000-10-31 | Ebara Corp | 流動床焼却炉の焼却灰及びガス化溶融炉のガス化炉の炉底不燃物残渣の再資源化方法及び装置 |
| DE10220813B4 (de) * | 2002-03-14 | 2004-02-26 | Schauenburg Maschinen- Und Anlagen-Bau Gmbh | Verfahren zur Verwertung von Aschen mit hohem Kohlegehalt aus Kohlestaubfeuerungsanlagen |
| RU2265773C2 (ru) * | 2003-05-13 | 2005-12-10 | ОАО "Механобр-техника" | Способ и устройство для сжигания твердых бытовых отходов |
| DE102005048959B4 (de) * | 2005-10-13 | 2008-04-10 | Schauenburg Maschinen- Und Anlagen-Bau Gmbh | Verfahren zum Aufbereiten von Asche |
| CN201511030U (zh) * | 2009-08-27 | 2010-06-23 | 珠海市雄峰发展有限公司 | 城市生活垃圾焚烧灰渣处理装置 |
| UA100021C2 (uk) * | 2009-12-29 | 2012-11-12 | Государственное Предприятие "Украинский Научно-Технический Центр Металлургической Промышленности "Энергосталь" | Виробничий комплекс для утилізації твердих побутових відходів |
| DE102011013030A1 (de) | 2011-03-04 | 2012-09-06 | Alexandra Beckmann | Aufbereiten von Müllverbrennungsasche |
| ITMI20111141A1 (it) * | 2011-06-23 | 2012-12-24 | Aprica S P A | Metodo ed impianto di trattamento di ceneri pesanti |
| JP2013138975A (ja) * | 2011-12-28 | 2013-07-18 | Jx Nippon Mining & Metals Corp | 焼却灰処理システム |
| RU121176U1 (ru) * | 2012-06-04 | 2012-10-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Дальневосточный Федеральный Университет" (Двфу) | Технологическая линия для переработки золошлаковых отходов - продуктов сжигания угольного топлива |
| WO2014090601A1 (de) * | 2012-12-11 | 2014-06-19 | Lab Gmbh | Verfahren zur rückgewinnung von wertstoffen aus schlacke |
| US8905241B2 (en) * | 2013-01-23 | 2014-12-09 | Michael Brandon Rush | Methods for treating bottom ash generated from waste-to-energy facilities to reduce the dependence on bonding agents such as lime or concrete prior to disposal |
| DE102014100725B3 (de) * | 2013-12-23 | 2014-12-31 | Schauenburg Maschinen- Und Anlagen-Bau Gmbh | Verfahren zur Aufbereitung von Asche aus Müllverbrennungsanlagen durch Nassklassierung |
| CN106282585B (zh) * | 2016-09-27 | 2018-06-26 | 中国科学院城市环境研究所 | 一种生活垃圾焚烧飞灰的脱毒分级资源化利用方法 |
-
2016
- 2016-04-03 DE DE102016106054.2A patent/DE102016106054A1/de not_active Withdrawn
-
2017
- 2017-04-03 PL PL17715452T patent/PL3439788T3/pl unknown
- 2017-04-03 CN CN201780021462.3A patent/CN108883419B/zh active Active
- 2017-04-03 EP EP17715452.3A patent/EP3439788B1/de active Active
- 2017-04-03 RU RU2018134763A patent/RU2721198C2/ru active
- 2017-04-03 WO PCT/EP2017/057846 patent/WO2017174502A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP3439788B1 (de) | 2020-01-01 |
| WO2017174502A1 (de) | 2017-10-12 |
| PL3439788T3 (pl) | 2020-07-27 |
| DE102016106054A1 (de) | 2017-10-05 |
| RU2018134763A3 (de) | 2020-04-10 |
| CN108883419B (zh) | 2021-01-05 |
| RU2721198C2 (ru) | 2020-05-18 |
| RU2018134763A (ru) | 2020-04-07 |
| CN108883419A (zh) | 2018-11-23 |
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