EP0922749A1 - Verfahren zum Aufarbeiten von RESH bwz. von Shredderleichtfraktionen - Google Patents
Verfahren zum Aufarbeiten von RESH bwz. von Shredderleichtfraktionen Download PDFInfo
- Publication number
- EP0922749A1 EP0922749A1 EP98890361A EP98890361A EP0922749A1 EP 0922749 A1 EP0922749 A1 EP 0922749A1 EP 98890361 A EP98890361 A EP 98890361A EP 98890361 A EP98890361 A EP 98890361A EP 0922749 A1 EP0922749 A1 EP 0922749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluidized bed
- resh
- cyclone
- metal bath
- melting
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 34
- 238000000227 grinding Methods 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 41
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000002893 slag Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 235000019738 Limestone Nutrition 0.000 claims description 9
- 239000006028 limestone Substances 0.000 claims description 9
- 238000002309 gasification Methods 0.000 claims description 7
- 150000004645 aluminates Chemical class 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 238000007885 magnetic separation Methods 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 3
- 238000005204 segregation Methods 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 6
- 238000001354 calcination Methods 0.000 abstract description 2
- 235000010216 calcium carbonate Nutrition 0.000 abstract 2
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 15
- 239000010949 copper Substances 0.000 description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000011133 lead Substances 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/065—Jet mills of the opposed-jet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/503—Fuel charging devices for gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/52—Ash-removing devices
- C10J3/523—Ash-removing devices for gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
Definitions
- the invention relates to a method for working up RESH or of shredder light fractions, in which RESH or the shredder light fraction fed to a fluidized bed gasifier becomes.
- Jet mills For the mechanical crushing of mineral raw materials
- Jet mills have already been proposed. Jet mills are usually operated with compressed air, whereby the material ground in such jet mills via a sifter can be carried out. Depending on the grist and meal, a differently fine material can be produced. Jet mills but are just as unsuitable as other mills for one good shredding of waste with high organic Shares such as RESH.
- the invention now aims to provide a simple method of the type mentioned at the beginning, with which it is simultaneously possible to use the energetic content of RESH or shredder light fractions and to ensure a high degree of disintegration and comminution.
- the process according to the invention aims to provide comminuted materials which can be converted directly and economically into usable end products in a simple manner.
- the process according to the invention essentially consists in that hot wind or combustion exhaust gases with a temperature of over 450 ° C. are blown into the fluidized bed through the formation of a countercurrent grinding chamber and that CaCO 3 is introduced into the fluidized bed and calcined in the grinding chamber with disintegration .
- RESH or the shredder light fraction is fed into a fluidized bed gasifier, it is possible to gasify the proportion of organic substances contained in the starting materials, and in particular elastic, rubber-containing materials, to a synthesis gas which essentially consists of carbon monoxide and hydrogen.
- a synthesis gas which essentially consists of carbon monoxide and hydrogen.
- Such gasification in the fluidized bed requires temperatures above 450 ° C., the process being carried out in such a way that gasification, but not quantitative combustion, is achieved, so that the synthesis gas produced still has a high calorific value.
- the reaction must therefore be carried out substoichiometrically in order to keep the CO 2 content in the fluidized bed atmosphere correspondingly low.
- calcium carbonate of this type can be calcined at a sufficiently high temperature with the simultaneous introduction of calcium carbonate, in particular in the form of limestone or marl of limestone into the fluidized bed, calcium carbonate or quicklime can be comminuted at the same time if a countercurrent grinding chamber is formed in the fluidized bed.
- Such a comminuted calcined material subsequently acts as an effective disintegration aid and allows starting products which are difficult to comminute to be ground correspondingly finely in the countercurrent grinding chamber.
- the process according to the invention is advantageously carried out in such a way that the starting products are fed in with a maximum particle size of 25 mm, preferably 20 mm.
- the process according to the invention is advantageously carried out in such a way that aluminate carriers are introduced into the fluidized bed in an amount which is reduced after the crushed particles have melted an Al 2 O 3 content of between 12 and 25% by weight, preferably about 15% by weight.
- cement-like products can be produced directly, which can at least be used as cement additives.
- the process according to the invention is advantageously carried out in such a way that CaCO 3 is introduced in an amount which, after a reduction in the melt of the comminuted particles, gives a basicity CaO / SiO 2 between 1.3 and 1.9, preferably 1.5.
- thermokinetic digestion being elastic Materials are gasified and inorganic particles such as glass and metals are mechanically smashed.
- the added limestone or lime marl is crushed and calcined at the same time.
- care must be taken to ensure that the share not too large of ductile material in the fluidized bed becomes.
- the method according to the invention is advantageously carried out so that RESH or Shredder light fraction, if necessary pre-shredded, a magnetic separation is subjected and with a total iron content of less than 6% by weight is used.
- the total copper content can be used for subsequent recovery of heavy metals or non-ferrous metals advantageously larger than 0.5% by weight are kept, so that a simple magnetic separation brings significant advantages here.
- the procedure is such that the crushed particles from the fluidized bed gasifier or Grinding chamber drawn off via a classifier and a melting unit, in particular a melting cyclone, whereupon the obtained melt over a metal bath, in particular one Iron bath, is reduced.
- the thermokinetic in the fluidized bed digested material which usually has grain sizes of a maximum of 2 mm leaves the fluidized bed, in particular advantageously melted in a melting cyclone are subjected to a corresponding melt reduction be what a metal bath, especially an iron bath, especially is preferred.
- a smelting reduction over Different phases can be subtracted from an iron bath, usually there is a two-phase metal regulation.
- a heavy phase primarily contains up to 80% by weight of copper, as well as iron, tin, nickel and chrome.
- a second easier phase consists of up to 90% by weight iron, as well as copper, nickel, chrome and about 4 wt% carbon.
- Such phases can in the Sequence can be separated in a simple manner, the inventive Process is advantageously carried out so that from the Metallbadreaktor a heavier Cu-containing phase by segregation is subtracted separately and that the remaining ferrous Phase at least partially as a metal bath in the metal bath reactor is left.
- Another way of enriching metallic components can also be created by the fact that, as one preferred procedure corresponds to the comminuted particles be sucked off via a hot cyclone, that in the hot cyclone resulting coarse material at least partially of the fluidized bed is recycled and that the exiting from the hot cyclone Fine material of a melting unit, in particular a melting cyclone, is fed, whereupon the molten slag over a Metal bath is reduced. Because here is not immediately a melting cyclone to the grinding chamber or the fluidized bed gasifier downstream, but a hot cyclone is interposed , it succeeds in handling coarse material, which is primarily made up of difficult shredding, ductile material and thus of metallic Phases exists to separate.
- Such metallic can be returned to the fluidized bed Components are enriched in the circuit and processed separately become. Only that exiting the hot cyclone Fines, which primarily contain the mineral components, is a melting unit, especially one Melt cyclone fed and subsequently preferably in a metal bath reactor treated.
- the process according to the invention is advantageously carried out in such a way that the temperature in the fluidized bed or in the grinding chamber is set to 450 ° C. to 700 ° C. and the CO 2 content of the fluidized bed atmosphere is kept below 30% by volume, preferably below 15% by volume a corresponding calcination can already be observed at temperatures of about 700 ° C.
- the energy yield can be improved in that the combustion exhaust gases for the operation of the fluidized bed mill are produced at least partially by burning the exhaust gases of the gasification reaction in the fluidized bed, which is preferably carried out sub-stoichiometrically.
- the method is advantageously carried out so that RESH and Limestone used in a weight ratio of 1.5: 1 to 3: 1 become.
- the method according to the invention can be used in addition to a particularly good comminution is also immediately appropriate Ensure the procedure with which metallic Phases with a high contribution margin can be won, the driving steel for the fluidized bed mill by combustion of synthesis gases obtained at least in part in the process can be manufactured.
- the substoichiometric Combustion in the fluidized bed creates a syngas sufficient heat of combustion, with additional converter exhaust gases from the metal bath reactor, which also has a high Contain hydrogen and about 20% by weight of carbon monoxide, used to produce the hot gases for the fuel steel can be.
- waste fuel can also be used directly in the fluidized bed or in upstream combustion chambers be introduced.
- the copper-rich phase has in the Usually very low solvency for carbon and works therefore almost inert in the melt reduction.
- the atmosphere Heavy metals like zinc and lead fall concentrated during the first minutes of enamel reduction and can be concentrated Form can be obtained from the converter exhaust gas.
- the sulfur contained in the starting materials is found practically quantitative again in the reduced slag, whereby such a sulfur content for subsequent use shows quite positive properties as cement cement.
- RESH combines practically quantitatively with the introduced alkalis as well as at least partly with the existing heavy metals (Cu, Zn, Pb) and already evaporates in the fluidized bed and in the melting cyclone quantitatively.
- FIG. 1 shows a first embodiment of a device for Processing of RESH or automotive shredder light fractions schematically partially in section and Fig.2 a modified Training of the facility according to Fig.1.
- a fluidized bed gasifier 1 is shown in FIG Feed nozzle 2 RESH together with limestone and possibly bauxite or grinding dust is given as an aluminate carrier.
- a fluidized bed 3 is formed inside the fluidized bed reactor, corresponding propellant gas via jet pipes 4 in the reactor is blown.
- the jet pipes 4 are with their Axes oriented so that the beam direction points to a common one Milling point 5 aims.
- the propellant gas is supplied via a line 6 fed to the ring line 7, to which the jet pipes 4 are connected are.
- Combustion gases are used as the propellant here Temperature of over 450 ° inside the fluidized bed reactor 3 ensure.
- the combustion chamber for the production of combustion gases is designated 8.
- the product gasified inside the fluidized bed reactor is comminuted in the grinding chamber, and in particular in grinding point 5, fine material via a classifier 9 into a melting cyclone 10 is carried out.
- the synthesis gas formed in the process which occurs as the gasification product of the fluidized bed gasifier, is withdrawn via a line 11 and via a heat exchanger 12 performed, whereupon this synthesis gas at least partially via a line 13 and a compressor 14 of the combustion chamber 8 is supplied as fuel gas.
- Cold air for combustion in the combustion chamber 8 is sucked in via a line 15, the corresponding suction fan is designated 16.
- the Cold air is heated in the heat exchanger 12 and as hot air, if necessary together with oxygen, fed to the combustion chamber 8.
- the melting product of the melting cyclone is placed in an iron bath reactor 17, in which the liquid slag on a Iron bath 18 floats.
- the iron bath 18 takes on reduction the liquid slag on further metallic components, wherein especially a heavier phase, which contains a high amount of copper is to be withdrawn via line 19 after segregation can, the iron bath can remain in the iron bath reactor.
- the Slag can be tapped off via line 20.
- the classifier is omitted in the embodiment according to FIG.
- jet pipes 4 Laval nozzles are used in this training, where again a grinding point 5 or an associated grinding chamber in the Gasification reactor 1 is formed.
- the clarity half are the elements of propellant gas production for the nozzles to the grinding room not shown in Fig.2.
- the at least partially calcined and comminuted accordingly Product is fed to a hot cyclone 23 via a line 22.
- Corresponding coarse fractions are in this hot cyclone discharged as coarse material via line 24, this coarse material at least partially via line 25 into the fluidized bed gasifier can be returned.
- the coarse material contains primarily ductile components that are difficult to shred and therefore consists essentially of metal parts. After appropriate enrichment of the metal parts can this over the line 26 is fed to a mechanical preparation 27, in which, for example, magnetic separation of iron from Non-ferrous metals can be separated and separated Discharge lines 28 and 29 can be discharged.
- the fine material separated in the hot cyclone is used together with the synthesis gas or the product gas of the fluidized bed reactor via a Line 30 fed to a melting cyclone 10, from which the The melt in turn reaches an iron bath reactor 17 and analogously as in the embodiment according to FIG. 1 with the separation of a copper phase is reduced.
- the reduced slag is in turn over the line 20 discharged and can be processed accordingly become.
- Grinding dusts can be used directly as aluminate supports be, such grinding dust even when wet can be used as they are in the hot fluidized bed be subjected to drying.
- the crushing of the high organic waste or auto shredder light fraction is through the addition of limestone and bauxite significantly improved, with the use of limestone here brings with it an additional advantage that in the fluidized bed practically the total amount of sulfur of the input substances and before especially the amount of sulfur in the RESH is incorporated in the lime. It is the effort for a subsequent exhaust gas treatment considerably reduced.
- the procedure in the smelting reduction process naturally requires the maintenance of a corresponding one Temperature, the heating being in any economic Way can be done. If the residual carbon content of the iron bath is partially burned, the corresponding can immediately Heat of fusion and the corresponding, high calorific value Converter exhaust gas are formed. For this purpose Blown oxygen or air through the iron bath. Alternatively can be blown onto the weld pool with lances. Finally, it is possible to use burners here, the required heat can also be introduced electrically.
- coarse-scraped RESH contains 44% inorganic components and 56% flammable parts and water. In more typical In this way, 65% by weight of coarsely decommissioned RESH can be used together with 30% by weight limestone and 5% by weight dry, lumpy bauxite in the fluidized bed mill or the fluidized bed reactor is introduced become.
- RESH analysis (inorganics) component Proportion of (%) SiO 2 55 CaO 15 Al 2 O 3 13 Fe 2 O 3 5 Na 2 O 3.5 K 2 O 2.3 MgO 2nd Pb 0.1 TiO 2 1 MnO 0.2 Zn 0.5 SO 3rd 0.1 P 0.7 Cr 2.5 Cu 2.1 Ni 0.1 Cl 2nd
- the sulfur is quantitatively bound to the calcium that is introduced.
- Chloride evaporates with the alkalis and partly with the Heavy metals (Cu, Zn, Pb) in the fluidized bed and in the Melting cyclone.
- the entry sulfur is found quantitatively in the slag withdrawn from the iron bath reactor.
- a ton of RESH is equivalent to about half a ton slag cleaned of metals and heavy metals, which can be used immediately.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
RESH- Analyse (Anorganika) | |
Komponente | Anteil (%) |
SiO2 | 55 |
CaO | 15 |
Al2O3 | 13 |
Fe2O3 | 5 |
Na2O | 3,5 |
K2O | 2,3 |
MgO | 2 |
Pb | 0,1 |
TiO2 | 1 |
MnO | 0,2 |
Zn | 0,5 |
SO3 | 0,1 |
P | 0,7 |
Cr | 2,5 |
Cu | 2,1 |
Ni | 0,1 |
Cl | 2 |
Claims (11)
- Verfahren zum Aufarbeiten von RESH bzw. von Shredderleichtfraktionen, bei welchem RESH bzw. die Shredderleichtfraktion einem Wirbelschichtvergaser (1) aufgegeben wird, dadurch gekennzeichnet, daß in die Wirbelschicht (3) Heißwind oder Verbrennungsabgase mit einer Temperatur von über 450° C über Düsen unter Ausbildung eines Gegenstrommahlraumes eingeblasen werden und daß in die Wirbelschicht (3) CaCO3 eingebracht und unter Desintegration im Mahlraum kalziniert wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Ausgangsprodukte mit einer maximalen Partikelgröße vom 25 mm vorzugsweise 20 mm aufgegeben werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in die Wirbelschicht (3) Aluminatträger in einer Menge eingebracht werden, welche nach einer Schmelzreduktion der zerkleinerten Partikel einen Al2O3-Gehalt zwischen 12 und 25 Gew.%, vorzugsweise etwa 15 Gew.%, ergibt.
- Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß CaCO3 in einer Menge eingetragen wird, welche nach einer Schmelzreduktion der zerkleinerten Partikel eine Basizität CaO/ SiO2 zwischen 1,3 und 1,9, vorzugsweise 1,5 ergibt.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß RESH bzw. die Shredderleichtfraktion, ggf. vorzerkleinert einer Magnetscheidung unterworfen wird und mit einem Gesamt-Eisengehalt von weniger als 6 Gew.% eingesetzt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die zerkleinerten Partikel aus dem Wirbelschichtvergaser (1) bzw. dem Mahlraum über einen Sichter (9) abgezogen und einem Schmelzaggregat, insbesondere einem Schmelzzyklon, zugeführt werden, worauf die erhaltene Schmelze über einem Metallbad, insbesondere einem Eisenbad (18), reduziert wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die zerkleinerten Partikel über einen Heißzyklon (23) abgesaugt werden, daß das im Heißzyklon (23) anfallende Grobgut zumindest teilweise der Wirbelschicht (3) rückgeführt wird und daß das aus dem Heißzyklon (23) austretende Feingut einem Schmelzaggregat, insbesondere einem Schmelzzyklon, zugeführt wird, worauf die geschmolzene Schlacke über einem Metallbad reduziert wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Temperatur in der Wirbelschicht (3) bzw. im Mahlraum auf 450° C bis 700° C eingestellt wird und der CO2-Gehalt der Wirbelschichtatmosphäre unter 30 Vol.%, vorzugsweise unter 15 Vol.% gehalten wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Verbrennungsabgase für den Betrieb der Wirbelschichtmühle zumindest teilweise durch Verbrennen der Abgase der Vergasungsreaktion in der Wirbelschicht (3) hergestellt werden, welche bevorzugt unterstöchiometrisch vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß RESH und Kalkstein in einem Gewichtsverhältnis von 1,5:1 bis 3:1 eingesetzt werden.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß aus dem Metallbadreaktor (17) eine schwerere Cu-hältige Phase durch Seigerung getrennt abgezogen wird und daß die verbleibende eisenhaltige Phase zumindest teilweise als Metallbad (18) im Metallbadreaktor (17) belassen wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT209397 | 1997-12-11 | ||
AT0209397A AT408684B (de) | 1997-12-11 | 1997-12-11 | Verfahren zum aufarbeiten von rest-shredder oder von shredderleichtfraktionen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0922749A1 true EP0922749A1 (de) | 1999-06-16 |
Family
ID=3527604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98890361A Withdrawn EP0922749A1 (de) | 1997-12-11 | 1998-12-04 | Verfahren zum Aufarbeiten von RESH bwz. von Shredderleichtfraktionen |
Country Status (3)
Country | Link |
---|---|
US (1) | US6203595B1 (de) |
EP (1) | EP0922749A1 (de) |
AT (1) | AT408684B (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000027952A1 (de) * | 1998-11-11 | 2000-05-18 | Holderbank Financiere Glarus Ag | Verfahren zum aufarbeiten von bodenaschen aus verbrennungsanlagen |
EP1721676A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Flusen-Fraktion |
EP1721675A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Granulat-Fraktion |
EP1721677A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Sand-Fraktion |
US7681812B2 (en) | 2000-10-27 | 2010-03-23 | Volkswagen Ag | Unit and method for the treatment of shredder residues |
EP3293159B1 (de) | 2016-09-09 | 2019-05-15 | Baumit Beteiligungen GmbH | Verfahren zum brennen von kalk oder zement mit synthesegas |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8580019B2 (en) * | 2010-05-14 | 2013-11-12 | Frontline Bioenergy, Llc | Apparatus and method of optimized acid gas and toxic metal control in gasifier produced gases |
CN103720725A (zh) * | 2013-12-31 | 2014-04-16 | 昆明特康科技有限公司 | 一种循环流化床设备及其用于松花粉的生产方法 |
CN115069380B (zh) * | 2022-06-17 | 2024-03-19 | 中国人民解放军总医院第二医学中心 | 一种用于肠胃药物的粉碎装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1761384A (en) * | 1920-08-10 | 1930-06-03 | Cos Process Company Inc | Making producer gas |
GB1437845A (en) * | 1974-03-27 | 1976-06-03 | Chevron Res | Gasification of solid carbonaceous material |
EP0035887A2 (de) * | 1980-03-10 | 1981-09-16 | Exxon Research And Engineering Company | Verfahren zur katalytischen Vergasung von Kohle |
US4330430A (en) * | 1979-03-12 | 1982-05-18 | Conoco Inc. | Method for producing and regenerating a synthetic CO2 acceptor |
US4390349A (en) * | 1979-06-15 | 1983-06-28 | Kuo-Yung Industrial Company | Method for producing fuel gas from limestone |
US4440546A (en) * | 1981-09-25 | 1984-04-03 | Conoco Inc. | Process for gasification of carbonaceous material |
WO1996030465A1 (en) * | 1995-03-30 | 1996-10-03 | Enviropower Inc. | Method for feeding regeneration offgas into a gasifier |
US5584255A (en) * | 1995-06-07 | 1996-12-17 | Proler Environmental Services, Inc. | Method and apparatus for gasifying organic materials and vitrifying residual ash |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897739A (en) * | 1974-10-30 | 1975-08-05 | Us Health | Fluid bed combustor for operation at ash fusing temperatures |
SE451033B (sv) * | 1982-01-18 | 1987-08-24 | Skf Steel Eng Ab | Sett och anordning for omvandling av avfallsmaterial med plasmagenerator |
US5060584A (en) * | 1990-06-22 | 1991-10-29 | Energy Products Of Idaho | Fluidized bed combustion |
JP3301065B2 (ja) * | 1992-12-28 | 2002-07-15 | 大同特殊鋼株式会社 | 廃棄物溶融炉 |
US5364443A (en) * | 1993-12-01 | 1994-11-15 | Alcan International Limited | Process for combined decoating and melting of aluminum scrap contaminated with organics |
AT403294B (de) * | 1994-10-10 | 1997-12-29 | Holderbank Financ Glarus | Verfahren zum aufarbeiten von müll oder von metalloxidhaltigen müllverbrennungsrückständen sowie vorrichtung zur durchführung dieses verfahrens |
-
1997
- 1997-12-11 AT AT0209397A patent/AT408684B/de not_active IP Right Cessation
-
1998
- 1998-12-04 EP EP98890361A patent/EP0922749A1/de not_active Withdrawn
- 1998-12-11 US US09/209,000 patent/US6203595B1/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1761384A (en) * | 1920-08-10 | 1930-06-03 | Cos Process Company Inc | Making producer gas |
GB1437845A (en) * | 1974-03-27 | 1976-06-03 | Chevron Res | Gasification of solid carbonaceous material |
US4330430A (en) * | 1979-03-12 | 1982-05-18 | Conoco Inc. | Method for producing and regenerating a synthetic CO2 acceptor |
US4390349A (en) * | 1979-06-15 | 1983-06-28 | Kuo-Yung Industrial Company | Method for producing fuel gas from limestone |
EP0035887A2 (de) * | 1980-03-10 | 1981-09-16 | Exxon Research And Engineering Company | Verfahren zur katalytischen Vergasung von Kohle |
US4440546A (en) * | 1981-09-25 | 1984-04-03 | Conoco Inc. | Process for gasification of carbonaceous material |
WO1996030465A1 (en) * | 1995-03-30 | 1996-10-03 | Enviropower Inc. | Method for feeding regeneration offgas into a gasifier |
US5584255A (en) * | 1995-06-07 | 1996-12-17 | Proler Environmental Services, Inc. | Method and apparatus for gasifying organic materials and vitrifying residual ash |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000027952A1 (de) * | 1998-11-11 | 2000-05-18 | Holderbank Financiere Glarus Ag | Verfahren zum aufarbeiten von bodenaschen aus verbrennungsanlagen |
EP1721676A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Flusen-Fraktion |
EP1721675A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Granulat-Fraktion |
EP1721677A2 (de) | 2000-10-27 | 2006-11-15 | Volkswagen AG | Verfahren zur Aufbereitung von Shredder-Rückständen und Verwendung einer erzeugten Sand-Fraktion |
US7389880B2 (en) | 2000-10-27 | 2008-06-24 | Volkswagen Ag | Unit and method for processing of shredder residues and uses of a sand fraction produced thus |
US7681812B2 (en) | 2000-10-27 | 2010-03-23 | Volkswagen Ag | Unit and method for the treatment of shredder residues |
US7681813B2 (en) | 2000-10-27 | 2010-03-23 | Volkswagen Ag | System and method for treating shredder residues |
US7780760B2 (en) | 2000-10-27 | 2010-08-24 | Volkswagen Ag | Unit and method for the treatment of shredder residues and use of granulate fraction thus produced |
US8056729B2 (en) | 2000-10-27 | 2011-11-15 | Volkswagen Ag | System and method for treating shredder residues and utilizing a produced fiber fraction |
US8267336B2 (en) | 2000-10-27 | 2012-09-18 | Volkswagen Ag | System and method for treating shredder residues and use of a granulate fraction thus produced |
EP3293159B1 (de) | 2016-09-09 | 2019-05-15 | Baumit Beteiligungen GmbH | Verfahren zum brennen von kalk oder zement mit synthesegas |
Also Published As
Publication number | Publication date |
---|---|
AT408684B (de) | 2002-02-25 |
US6203595B1 (en) | 2001-03-20 |
ATA209397A (de) | 2001-06-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60129558T2 (de) | Herstellungsverfahren eines metallisierten briketts | |
DE69627145T2 (de) | Verfahren und vorrichtung zur verwendung von hochofenschlacken bei der zementherstellung | |
AT403294B (de) | Verfahren zum aufarbeiten von müll oder von metalloxidhaltigen müllverbrennungsrückständen sowie vorrichtung zur durchführung dieses verfahrens | |
DE2758820A1 (de) | Verfahren und vorrichtung zur herstellung von zementklinkern unter verwendung der flugasche von kraftwerken und muellverbrennungsanlagen | |
AT403055B (de) | Verfahren zur verwertung von eisenhältigen abfall- oder reststoffen | |
AT408684B (de) | Verfahren zum aufarbeiten von rest-shredder oder von shredderleichtfraktionen | |
EP0611740B1 (de) | Titanhaltiger Zuschlagstoff und dessen Verwendung zur Erhöhung der Haltbarkeit der feuerfesten Ausmauerung eines Ofens | |
DE2749029A1 (de) | Verfahren zur herstellung von hydraulischem zement und von zementvorstufen | |
EP0526697B1 (de) | Verfahren und Anlage zum Behandeln von Mineralwolleabfällen | |
EP0217139A1 (de) | Verfahren zum Aufarbeiten zink- und bleihaltiger Reststoffe der Stahlindustrie im Hinblick auf eine metallurgische Weiterverarbeitung | |
DE3404952A1 (de) | Verfahren zum ausschleusen von fremdstoffen aus dem materialkreislauf bei der elektrothermischen herstellung von gelbem phosphor | |
EP1105541A1 (de) | Verfahren zur herstellung von flüssigem roheisen | |
DE102008059370B4 (de) | Verfahren und Anlage zur Herstellung von Zement | |
EP0870066B1 (de) | Verfahren zum aufarbeiten von müll sowie vorrichtung zur durchführung dieses verfahrens | |
AT405524B (de) | Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und metallschwamm | |
DE3347686C1 (de) | Verfahren zur Herstellung von Ferrochrom | |
AT396371B (de) | Verfahren zur energetischen nutzung von schreddermuell | |
EP1029093A1 (de) | Verfahren zum aufarbeiten von stahlschlacken und eisenträgern | |
WO2002090604A2 (de) | Verfahren und anlage zur verwertung von kohlenwasserstoff- und eisenoxidhaltigen abfallstoffen, insbesondere walzzunderschlämmen, und feinkohlen | |
AT406369B (de) | Verfahren zum zerkleinern und reduzieren von metalloxidhaltigen schlacken | |
WO2000070101A1 (de) | Verfahren und anlage mit schmelz/reduktionszyklon und gekoppeltem unterofen zum verwerten von eisen- und schwermetallhältigen reststoffen und/oder eisenfeinerzen | |
AT525219B1 (de) | Verfahren und Vorrichtung zur Aufbereitung von zinkhaltigen Filterstäuben der Stahl- und Gießereiindustrie | |
AT406056B (de) | Verfahren und anlage zum verarbeiten von eisen- und ölhältigen hüttenwerksreststoffen | |
DE19844038C2 (de) | Verfahren zum Herstellen von weißem Zement und Vorrichtung zur Durchführung desselben | |
DD200567A1 (de) | Verfahren zur herstellung von qualitaetsverbesserten fasern aus roh-und industrieanfallstoffen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19990604 |
|
AKX | Designation fees paid |
Free format text: AT BE CH DE FR GB IT LI NL |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HOLCIM LTD. |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RTI1 | Title (correction) |
Free format text: PROCESS FOR TREATING RESH OR SHREDDER LIGHT FRACTIONS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20030308 |