EP1328331A1 - Verfahren zur verhinderung der dioxinbildung bei der sinteragglomeration von eisenerzen - Google Patents
Verfahren zur verhinderung der dioxinbildung bei der sinteragglomeration von eisenerzenInfo
- Publication number
- EP1328331A1 EP1328331A1 EP01962489A EP01962489A EP1328331A1 EP 1328331 A1 EP1328331 A1 EP 1328331A1 EP 01962489 A EP01962489 A EP 01962489A EP 01962489 A EP01962489 A EP 01962489A EP 1328331 A1 EP1328331 A1 EP 1328331A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substance
- fumes
- formation
- dioxins
- inhibiting
- 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- Withdrawn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 abstract description 30
- 239000003517 fume Substances 0.000 title claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 11
- 238000005245 sintering Methods 0.000 title abstract 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title 1
- 239000000126 substance Substances 0.000 claims abstract description 33
- 150000002013 dioxins Chemical class 0.000 claims abstract description 17
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000007864 aqueous solution Substances 0.000 claims abstract description 3
- 238000005054 agglomeration Methods 0.000 claims description 15
- 230000002776 aggregation Effects 0.000 claims description 15
- 239000003112 inhibitor Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005465 channeling Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
- C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/70—Organic halogen compounds
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
Definitions
- the present invention relates to a process for inhibiting the formation of dioxins in the fumes produced during the agglomeration of iron ores.
- the agglomeration process of iron ores is well known in the art. Briefly, it will simply be recalled here that it consists in depositing on a agglomeration strip, essentially formed of an endless moving grid, a layer of a mixture of iron ores, solid fuel, generally coke dust, and various addition materials; igniting this layer on its upper surface by means of burners arranged in an ignition hood; and sucking air through the mixture, by wind boxes located under the strip, to advance the combustion of solid fuel over the entire thickness of the layer, the fumes captured by the aforementioned wind boxes being a mixture of combustion gases and particles. Finally, at the outlet end of the agglomeration strip, there is obtained an agglomerated cake of iron ore intended, after cooling, crushing and screening, to be loaded into a blast furnace.
- any operation carried out on the fumes is an addition to the production costs of the manufacturing process both via the modifications to be made to the installations and by the addition of new installations comprising specific reactors ensuring purification. fumes. Presentation of the invention
- the present invention aims to provide a method for at least partially inhibiting the formation of dioxins in the agglomeration fumes of iron ores, which can be implemented on existing facilities at lower cost.
- a method for at least partially inhibiting the formation of dioxins in the fumes from the agglomeration operation of the iron ore in which at least one substance having the property of d inhibiting the formation of dioxins, hereinafter called "inhibitory substance”, is essentially characterized in that at least one inhibitory substance is introduced into the fumes extracted from the agglomeration installation and in that the introduction takes place below the agglomeration grid, preferably the injection takes place in one or more wind boxes located below the grid, said one or more boxes having the object of capturing and channeling the fumes aspirated below the grid.
- the inhibitor substance or substances are injected in spray form, preferably in aqueous solution.
- the injection conditions are regulated so that the substance or substances injected reach the underside of the grid, preferably so that the injected substance (s) are distributed throughout the volume of the wind box.
- monoethanolamine MEA
- triethanolamine TEA
- the method of the present invention has the non-negligible advantage of being able to be implemented simply in the context of existing agglomeration installations.
- all of the smoke treatment operations are thereby reduced and consequently this results in an increase in the financial return of the operation d agglomeration of iron ore.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Metallurgy (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE200000622 | 2000-10-03 | ||
| BE2000/0622A BE1013732A3 (fr) | 2000-10-03 | 2000-10-03 | Procede pour inhiber la formation des dioxines dans les fumees produites lors de l'agglomeration des minerais de fer. |
| PCT/BE2001/000131 WO2002028514A1 (fr) | 2000-10-03 | 2001-08-07 | Procede pour inhiber la formation des dioxines dans les fumees produites lors de l'agglomeration des minerais de fer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1328331A1 true EP1328331A1 (de) | 2003-07-23 |
Family
ID=3896691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01962489A Withdrawn EP1328331A1 (de) | 2000-10-03 | 2001-08-07 | Verfahren zur verhinderung der dioxinbildung bei der sinteragglomeration von eisenerzen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1328331A1 (de) |
| BE (1) | BE1013732A3 (de) |
| WO (1) | WO2002028514A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9708652D0 (en) * | 1997-04-30 | 1997-06-18 | British Steel Plc | Methods and apparatus for the treatment of waste gases of combustion processes |
| JP2000199690A (ja) * | 1998-10-30 | 2000-07-18 | Kawasaki Steel Corp | 焼結設備における排ガス処理方法 |
-
2000
- 2000-10-03 BE BE2000/0622A patent/BE1013732A3/fr not_active IP Right Cessation
-
2001
- 2001-08-07 WO PCT/BE2001/000131 patent/WO2002028514A1/fr not_active Ceased
- 2001-08-07 EP EP01962489A patent/EP1328331A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0228514A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1013732A3 (fr) | 2002-07-02 |
| WO2002028514A1 (fr) | 2002-04-11 |
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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 |
|
| 17P | Request for examination filed |
Effective date: 20020418 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOOR |
|
| 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: 20050301 |