FI126836B - Menetelmä ja järjestely pyrometallurgisesta uunista jätelämpökattilaan virtaavan prosessikaasun käsittelemiseksi - Google Patents

Menetelmä ja järjestely pyrometallurgisesta uunista jätelämpökattilaan virtaavan prosessikaasun käsittelemiseksi Download PDF

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Publication number
FI126836B
FI126836B FI20135936A FI20135936A FI126836B FI 126836 B FI126836 B FI 126836B FI 20135936 A FI20135936 A FI 20135936A FI 20135936 A FI20135936 A FI 20135936A FI 126836 B FI126836 B FI 126836B
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FI
Finland
Prior art keywords
furnace
gas
pyrometallurgical
waste heat
heat boiler
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Application number
FI20135936A
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English (en)
Swedish (sv)
Other versions
FI20135936A (fi
Inventor
Kari Pienimäki
Tapio Ahokainen
Eero Hugg
Elli Miettinen
Mikael Jåfs
Original Assignee
Outotec Finland Oy
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Filing date
Publication date
Priority to FI20135936A priority Critical patent/FI126836B/fi
Application filed by Outotec Finland Oy filed Critical Outotec Finland Oy
Priority to EA201690350A priority patent/EA030054B1/ru
Priority to ES14777678.5T priority patent/ES2656695T3/es
Priority to US15/021,215 priority patent/US20160223187A1/en
Priority to PL14777678T priority patent/PL3047212T3/pl
Priority to BR112016008591-4A priority patent/BR112016008591B1/pt
Priority to RS20180082A priority patent/RS56805B1/sr
Priority to CA2924444A priority patent/CA2924444A1/en
Priority to PCT/FI2014/050688 priority patent/WO2015040272A1/en
Priority to EP14777678.5A priority patent/EP3047212B1/en
Priority to CN201480050680.6A priority patent/CN105579778A/zh
Priority to KR1020167007712A priority patent/KR101817024B1/ko
Publication of FI20135936A publication Critical patent/FI20135936A/fi
Priority to CL2016000625A priority patent/CL2016000625A1/es
Application granted granted Critical
Publication of FI126836B publication Critical patent/FI126836B/fi

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/183—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines in combination with metallurgical converter installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/008—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using fluids or gases, e.g. blowers, suction units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Description

METHOD AND ARRANGEMENT FOR TREATING PROCESS GAS FLOWING FROM A PYROMETALLURGICAL FURNACE INTO A WASTE HEAT BOILER
Field of the invention
The invention relates to a method for treating process gas flowing from a furnace space of a pyrometallurgical furnace into a waste heat boiler that is in fluid communication with the furnace space of the pyrometallurgical furnace at a connecting aperture as defined in the preamble of independent claim 1.
The invention also relates to an arrangement for treating process gas flowing from a furnace space of a pyrometallurgical furnace into a waste heat boiler that is in fluid communication with the furnace space of the pyrometallurgical furnace at a connecting aperture as defined in the preamble of independent claim 6.
By a pyrometallurgical furnace is in this context meant for example, but not excluding other types of pyrometallurgical furnaces, a suspension smelting furnace, a top submerged lance furnace i.e. a TSL furnace, or an electrical furnace.
In order to recover metals, such as copper, nickel or lead, from sulfidic raw materials containing said materials, for instance from ores or concentrates, a suspension smelting method may be applied, where heat amounts contained in finely divided sulfidic raw materials are utilized. In such suspension smelting method sulfidic raw material and oxygen-containing gas, such as air, oxygen-enriched air or oxygen is fed into a reaction shaft of a suspension smelting furnace. In addition, for instance flue dust recovered and recirculated from the process gases of the suspension smelting furnace, as well as metallurgic slag-forming agent, flux, is additionally fed into the reaction shaft of the suspension smelting furnace. In the reaction shaft of the suspension smelting furnace, the solid and gaseous feed materials react with each other, so that in the bottom part of the suspension smelting furnace, i.e. in the settler, there are formed at least two molten phases, a slag phase and a matte phase containing the metal to be recovered. The molten phases that are formed in the bottom part of the suspension smelting furnace are removed from the suspension smelting furnace at regular intervals. Sulfur dioxide containing process gases created in the reaction shaft of the suspension smelting furnace are conducted, via the settler, to an uptake shaft of the suspension smelting furnace, and from the uptake shaft further to a waste heat boiler connected to the suspension smelting furnace, in which waste heat boiler the process gases from the suspension smelting furnace are cooled, and at the same time the solids, i.e. flue dust, contained in the gas are removed.
When the suspension smelting furnace process gases are transferred from the uptake shaft of the suspension smelting furnace to the waste heat boiler, the flowing direction of the gases is changed from an essentially vertical direction to an essentially horizontal direction. Moreover, because the flowing area of the connecting aperture between the uptake shaft and the waste heat boiler is made essentially smaller than that of the uptake shaft in order to reduce the heat losses from the suspension smelting furnace, contacts of sulfur dioxide bearing process gases with the walls of the suspension smelting furnace cannot be avoided. Further, because the temperature of the process gases is dropped towards the top part of the uptake shaft of the suspension smelting furnace, molten particles contained in the process gases start to solidify, and when touching the uptake shaft walls, they attach to the wall, particularly in the vicinity of the connecting aperture between the uptake shaft and the waste heat boiler. Thus, in the vicinity of the connecting aperture, there is accumulated dust accretions or build-up that obstruct the flowing of the process gases and must therefore be broken apart. Removal of such build-up can be hazardous and required a shutdown.
Publication WO 02/01131 presents an apparatus for mechanically breaking up and detaching dust accretions created by process gases and accumulated on the inner walls of a suspension smelting furnace and/or a waste heat boiler permanently connected to the suspension smelting furnace. In this known solution, on the outer surface of the wall of the suspension smelting furnace and/or the waste heat boiler, in the vicinity of the connecting point of the suspension smelting furnace and the waste heat boiler, there is installed at least one striker device, whereby there can be created a mechanical impact effect and mechanical contact between the apparatus and at least one of the dust accretions.
Objective of the invention
The object of the invention is to provide a method and an arrangement for treating process gas flowing from a furnace space of a pyrometallurgical furnace into a waste heat boiler that is in fluid communication with the furnace space of a pyrometallurgical furnace at an opening with the aim to prevent or at least to minimized the formation of build-up in the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler.
Short description of the invention
The method of the invention is characterized by the definitions of independent claim 1.
Preferred embodiments of the method are defined in the dependent claims 2 to 5.
The arrangement of the invention is correspondingly characterized by the definitions of independent claim 6.
Preferred embodiments of the arrangement are defined in the dependent claims 7 to 10.
The invention is based on providing the region of the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler with a gas blowing means for blowing gas into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler and on blowing gas with the gas blowing means into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler.
The invention provides for several advantages. Especially in suspension smelting furnaces the formation of build-up in the connecting aperture between the uptake shaft of a suspension smelting furnace and the waste heat boiler is prevented or at least reduced, because the gas cools down or extinguish the burning dust particles in the process gases quickly before they hit the surfaces of the connecting aperture and begin to form build-up. For example uneven burning of concentrate, feed disturbances or changes in physical or chemical properties of the feed in a suspension smelting process can lead to delayed burning of concentrate all the way through the waste heat boiler.
Especially in suspension smelting furnaces the gas can also be used for flushing the lower part of the connecting aperture between the uptake shaft of a suspension smelting furnace and the waste heat boiler and keep it cleaner from build-up and thereby improve the installation of a damper for temporary closing the connecting aperture between the uptake shaft of a suspension smelting furnace and the waste heat boiler.
Especially in suspension smelting furnaces the flue dust in process gas coming from the uptake shaft of the suspension smelting furnace off-gas must be sulfatized in order to achieve good flowing ability of the dust. The gas that is fed in the region of the connection aperture can also be used for sulfatizing particles in the process gas by mixing sulfatizing gas with the process gas. With the arrangement it is possible to eliminate or to reduce the amount of sulfation air nozzles in the waste heat boiler. Oxidic or sulfidic dust reacts together SO3 and/or with SO2 and oxygen from the sulfatation gas and forms metal sulfates.
List of figures
In the following the invention will described in more detail by referring to the figures of which
Figure 1 is a schematical side-view illustration of an installation comprising a suspension smelting furnace and a waste heat boiler that is connected to an uptake shaft of the suspension smelting furnace at an opening between the uptake shaft of the suspension smelting furnace and the waste heat boiler and where the region of the opening is provided with a gas blowing means,
Figure 2 shows a gas blowing means according to an embodiment,
Figure 3 is a schematical side-view illustration of an installation comprising a top submerged lance furnace and a waste heat boiler that is connected to the top submerged lance furnace at an opening between the top submerged lance furnace and the waste heat boiler and where the region of the opening is provided with a gas blowing means, and
Figure 4 is a schematical side-view illustration of an installation comprising an electrical furnace and a waste heat boiler that is connected to the electrical furnace at an opening between the electrical furnace and the waste heat boiler and where the region of the opening is provided with a gas blowing means.
Detailed description of the invention
The invention relates to a method and to an arrangement for treating process gas flowing from a furnace space of a pyrometallurgical furnace 1 into a waste heat boiler that is in fluid communication with the furnace space (not marked with a reference numeral) of the pyrometallurgical furnace 1 at a connecting aperture.
The pyrometallurgical furnace 1 that is used in the method or in the arrangement can for example be any one of the following: a suspension smelting furnace la such as a flash smelting furnace or a flash converting furnace, a top submerged lance furnace lb, and an electrical furnace lc.
Figure 1 shows an example of an installation comprising a pyrometallurgical furnace 1 in the form of a suspension smelting furnace la and a waste heat boiler 2. The suspension smelting furnace la comprises a reaction shaft 3 defining a reaction shaft space, a lower furnace 4 defining a lower furnace space, and an uptake shaft 5 defining an uptake shaft space. In figure 1 the furnace space of the pyrometallurgical furnace 1 is formed by the uptake shaft space of the uptake shaft 5 of the suspension smelting furnace la. The uptake shaft 5 of the suspension smelting furnace la is in fluid connection with the waste heat boiler 2 via a connecting aperture 6 so that process gas 8 that is produced in the suspension smelting process in the suspension smelting furnace la can flow from the uptake shaft 5 of the suspension smelting furnace la into the waste heat boiler 2. Because the basic function principle of such suspension smelting furnace la is known in the art for example from publication WO 2007/113375, neither the function principle of such suspension smelting furnace la nor the suspension smelting process will be described in greater detail here.
Figure 5 shows an example of an installation comprising a pyrometallurgical furnace 1 in the form of a top submerged lance furnace lb and a waste heat boiler 2. In figure 5, the furnace space of the pyrometallurgical furnace 1 is formed by the furnace space (not marked with a reference numeral) of the top submerged lance furnace lb. The furnace space of the top submerged lance furnace lb is in fluid connection with the waste heat boiler 2 via a connecting aperture 6 so that process gas 8 that is produced in the smelting process in the top submerged lance furnace lb can flow from the furnace space of the top submerged lance furnace lb into the waste heat boiler 2.
Figure 6 shows an example of an installation comprising a pyrometallurgical furnace 1 in the form of an electrical furnace lc and a waste heat boiler 2. In figure 6 the furnace space of the electrical furnace lc is in fluid connection with the waste heat boiler 2 via a connecting aperture 6 so that process gas 8 that is produced in the smelting process in the electrical furnace lc can flow from the furnace space of the electrical furnace lc into the waste heat boiler 2.
First the method and some preferred embodiment and variants thereof will be described in greater detail.
The method comprises a providing step for providing the region of the connecting aperture 6, preferably the connecting aperture 6, between the furnace space of the pyrometallurgical furnace 1 and the waste heat boiler 2 with a gas blowing means 7 for blowing gas into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The method comprises a blowing step for blowing gas with the gas blowing means 7 into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The method comprises preferably, but not necessarily, using as gas in the blowing step at least one of the following: air, nitrogen-enriched air, oxygen-enriched air and inert gas such as nitrogen or argon.
The providing step of the method comprises preferably, but not necessarily, providing a gas blowing means 7 in a lower region of the connecting aperture 6, and the blowing step of the method comprises preferably, but not necessarily, blowing gas into the process gas 8 from below into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The providing step of the method comprises preferably, but not necessarily, providing a gas blowing means 7 in at least one side region of the connecting aperture 6, and the blowing step of the method comprises preferably, but not necessarily, blowing gas into the process gas 8 from the side into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The providing step of the method comprises preferably, but not necessarily, providing a gas blowing means 7 in an upper region of the connecting aperture 6, and the blowing step of the method comprises preferably, but not necessarily, blowing gas into the process gas 8 from above into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The providing step of the method comprises preferably, but not necessarily, providing a gas blowing means 7 having an elongate configuration and provided with several gas discharge openings 9 along the elongated configuration, and arranging the gas blowing means 7 to extend in the transverse direction of the flow of process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2. The gas blowing means 7 can for example be provided with a plurality of gas discharge openings 9.
In case the pyrometallurgical furnace 1 in the method is a suspension smelting furnace la, the method may include adjusting the amount of gas that is blown into process gas 8 flowing from the uptake shaft 5 of a suspension smelting furnace la into the waste heat boiler 2 based on a calculated sulfatization need of the process gas 8.
In case the pyrometallurgical furnace 1 in the method is a suspension smelting furnace la, the method may include adjusting the amount of gas that is blown into process gas 8 flowing from the uptake shaft 5 of a suspension smelting furnace la into the waste heat boiler 2 based on measured residual oxygen content in the process gas 8.
Next the arrangement some preferred embodiments and variants of the arrangement will be described in greater detail.
In the arrangement the region of the connecting aperture 6 between the furnace space of the pyrometallurgical furnace 1 and the waste heat boiler 2 is provided with a gas blowing means 7 for blowing gas into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The gas blowing means 7 are preferably, but not necessarily, configured for blowing at least one of air, nitrogen-enriched air, oxygen-enriched air and inert gas such as nitrogen or argon.
Gas blowing means 7 are preferably, but not necessarily, provided in a lower region of the connecting aperture 6, and gas blowing means 7 provided in the lower region of the connecting aperture 6 are preferably, but not necessarily, configured for blowing gas into the process gas 8 from below into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
Gas blowing means 7 are preferably, but not necessarily, provided in at least one side region of the connecting aperture 6, and gas blowing means 7 provided in a side region of the connecting aperture 6 are preferably, but not necessarily, configured for blowing gas into the process gas 8 from a side into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
Gas blowing means 7 are preferably, but not necessarily, provided in an upper region of the connecting aperture 6, and gas blowing means 7 provided in the upper region of the connecting aperture 6 are preferably, but not necessarily, configured for blowing gas into the process gas 8 from above into process gas 8 flowing from furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2.
The gas blowing means 7 may, as shown in figures 2 to 4, have an elongate configuration and be provided with several gas discharge openings along the elongated configuration, and the gas blowing means 7 may extend in the transverse direction of the flow of process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2. The gas blowing means 7 can for example be provided with a plurality of gas discharge openings.
In case the pyrometallurgical furnace 1 in the arrangement is a suspension smelting furnace la, the arrangement may be configured to adjust the amount of gas that is blown into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2 based on the calculated sulfurization need.
In case the pyrometallurgical furnace 1 in the arrangement is a suspension smelting furnace la, the arrangement may be configured to adjust the amount of gas that is blown into process gas 8 flowing from the furnace space of the pyrometallurgical furnace 1 into the waste heat boiler 2 based on a measured residual oxygen content in the process gas 8.
It is apparent to a person skilled in the art that as technology advanced, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.

Claims (8)

1. Menetelmä pyrometallurgisen uunin (1; la; Ib; le) uunitilasta yhdistävän aukon (6) kohdalla pyrometallurgisen uunin (1; la; Ib; le) uunitilan kanssa fluidiyhteydessä olevaan hukkalämpökattilaan (2) virtaavan prosessikaasun (8) käsittelemiseksi, jolloin menetelmä käsittää varustetaan pyrometallurgisen uunin (1; la; Ib; le) uunitilan ja hukkalämpökattilan (2) välisen yhdistävän aukon (6) alue kaasunpuhallusvälineellä (7) kaasun puhaltamiseen pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavaan prosessikaasuun (8), ja puhalletaan kaasua kaasunpuhallusvälineen (7) avulla pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavaan prosessikaasuun (8), tunnettu siitä, että varustetaan yhdistävän aukon (6) alempi alue kaasunpuhallusvälineellä (7), ja yhdistävän aukon (6) alempaan alueeseen aikaansaadun kaasunpuhallusvälineen (7) avulla puhalletaan kaasua altapäin pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavaan prosessikaasuun (8).
2. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että kaasuna käytetään ainakin yhtä ilman, typpirikastetun ilman, happirikastetun ilman ja jalokaasun, kuten typen tai argonin joukosta.
3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, tunnettu siitä, että järjestetään konfiguraatioltaan pitkänomainen kaasunpuhallusväline (7), joka on varustettu lukuisilla kaasunpurkausaukoilla (9) pitkin pitkänomaista konfiguraatiota, ja järjestetään kaasunpuhallusväline (7) ulottumaan pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavan prosessikaasun (8) virtaussuuntaan nähden poikittaissuuntaan.
4. Jonkin patenttivaatimuksista 1-3 mukainen menetelmä, tunnettu siitä, että menetelmässä käytettävä pyrometallurginen uuni (1; la; Ib; le) on jokin seuraavista: suspensiosulatusuuni (la), kuten liekkisulatusuuni tai liekkikonvertteriuuni, TSL (top submergerd lance) -uuni (Ib), ja sähköuuni (le).
5. Järjestely pyrometallurgisen uunin (1; la; Ib; le) uunitilasta pyrometallurgisen uunin (1; la; Ib; le) uunitilan kanssa yhdistävän aukon (6) kohdalla fluidiyhteydessä olevaan hukkalämpökattilaan (2) virtaavan prosessikaasun (8) käsittelyä varten, jolloin pyrometallurgisen uunin (1; la; Ib; le) uunitilan ja hukkalämpökeittimen (2) välisen yhdistävän aukon (6) alue on varustettu kaasunpuhallusvälineellä (7) kaasun puhaltamiseksi pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavaan prosessikaasuun (8), tunnettu siitä, että yhdistävän aukon (6) alempi alue on varustettu puhallusvälineellä (7), ja yhdistävän aukon (6) alempaan alueeseen aikaansaatu puhallusväline (7) on konfiguroitu puhaltamaan kaasua altapäin pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavaan prosessikaasuun (8).
6. Patenttivaatimuksen 5 mukainen järjestely, tunnettu siitä, että kaasunpuhallusväline (7) on konfiguroitu puhaltamaan ainakin yhtä ilmasta, typpirikastetusta ilmasta, happirikastetusta ilmasta ja jalokaasusta, kuten typpi tai argon.
7. Patenttivaatimuksen 5 tai 6 mukainen järjestely, tunnettu siitä, että kaasunpuhallusväline (7) on konfiguraatioltaan pitkänomainen ja se on varustettu lukuisilla kaasunpurkausaukoilla (9) pitkin pitkänomaista konfiguraatiota, ja kaasunpuhallusväline (7) ulottuu pyrometallurgisen uunin (1; la; Ib; le) uunitilasta hukkalämpökattilaan (2) virtaavan prosessikaasun (8) virtaussuuntaan nähden poikittaissuuntaan.
8. Jonkin patenttivaatimuksista 5-7 mukainen järjestely, tunnettu siitä, että pyrometallurginen uuni (1; la; Ib; le) on jokin seuraavista: suspensiosulatusuuni (la), kuten liekkisulatusuuni tai liekkikonvertteriuuni, TSL (top submergerd lance) -uuni (Ib), ja sähköuuni (le).
FI20135936A 2013-09-18 2013-09-18 Menetelmä ja järjestely pyrometallurgisesta uunista jätelämpökattilaan virtaavan prosessikaasun käsittelemiseksi FI126836B (fi)

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Application Number Priority Date Filing Date Title
FI20135936A FI126836B (fi) 2013-09-18 2013-09-18 Menetelmä ja järjestely pyrometallurgisesta uunista jätelämpökattilaan virtaavan prosessikaasun käsittelemiseksi
PCT/FI2014/050688 WO2015040272A1 (en) 2013-09-18 2014-09-10 Method and arrangement for treating process gas flowing from a pyrometallurgical furnace into a waste heat boiler
US15/021,215 US20160223187A1 (en) 2013-09-18 2014-09-10 Method and arrangement for treating process gas flowing from a pyrometallurgical furnace into a waste heat boiler
PL14777678T PL3047212T3 (pl) 2013-09-18 2014-09-10 Sposób i układ do obróbki gazu procesowego przepływającego z pieca do pirometalurgii do kotła na ciepło odpadowe
BR112016008591-4A BR112016008591B1 (pt) 2013-09-18 2014-09-10 Método e disposição para tratamento de gás de processo que circula a partir de um forno pirometalúrgico para uma caldeira de aquecimento de resíduos
RS20180082A RS56805B1 (sr) 2013-09-18 2014-09-10 Postupak i postrojenje za obradu procesnog gasa koji struji iz pirometalurške peći u kotao na otpadnu toplotu
EA201690350A EA030054B1 (ru) 2013-09-18 2014-09-10 Способ и устройство для обработки технологического газа, протекающего из пирометаллургической печи в котел-утилизатор тепла отходящих газов
ES14777678.5T ES2656695T3 (es) 2013-09-18 2014-09-10 Método y disposición para tratar gas de proceso que fluye desde un horno pirometalúrgico a una caldera de calor residual
EP14777678.5A EP3047212B1 (en) 2013-09-18 2014-09-10 Method and arrangement for treating process gas flowing from a pyrometallurgical furnace into a waste heat boiler
CN201480050680.6A CN105579778A (zh) 2013-09-18 2014-09-10 用于处理从高温冶金炉流入废热锅炉的工艺气体的方法和装置
KR1020167007712A KR101817024B1 (ko) 2013-09-18 2014-09-10 건식 야금 로로부터 폐열 보일러 내로 유동하는 프로세스 가스를 처리하기 위한 방법 및 배열체
CA2924444A CA2924444A1 (en) 2013-09-18 2014-09-10 Method and arrangement for treating process gas flowing from a pyrometallurgical furnace into a waste heat boiler
CL2016000625A CL2016000625A1 (es) 2013-09-18 2016-03-16 Método y diseño para el tratamiento de gas de proceso que fluye desde un horno pirometalúrgico hacia una caldera de recuperación, que comprende incluir en la región de la abertura de conexión entre el espacio de un horno pirometalurgico y la caldera de recuperación un soplador de gas.

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GB1379168A (en) 1972-02-18 1975-01-02 Babcock & Wilcox Ltd Use of heat exchanging furnaces in the recovery of heat in waste gases
FI74738C (fi) * 1986-05-09 1988-03-10 Outokumpu Oy Foerfarande och anordning foer att minska stoftagglomerater vid behandling av gaser av smaeltningsugnen.
FI80781C (fi) * 1988-02-29 1991-11-06 Ahlstroem Oy Saett foer aotervinning av vaerme ur heta processgaser.
JPH1163401A (ja) 1997-08-28 1999-03-05 Dowa Mining Co Ltd 自熔炉廃熱ボイラー操業方法
FI109938B (fi) * 2000-06-29 2002-10-31 Outokumpu Oy Laite pölykasvannaisten poistamiseksi sulatusuunista
AU2003221547A1 (en) * 2002-04-03 2003-10-13 Seghers Keppel Technology Group Nv Method and device for controlling injection of primary and secondary air in an incineration system
JP4075667B2 (ja) * 2003-03-31 2008-04-16 三菱マテリアル株式会社 排ガスボイラー、排ガス冷却用スプレー装置、製錬設備及び排ガスの冷却方法
FI118540B (fi) 2006-04-04 2007-12-14 Outotec Oyj Menetelmä ja laitteisto prosessikaasun käsittelemiseksi
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EP3047212A1 (en) 2016-07-27
CA2924444A1 (en) 2015-03-26
CL2016000625A1 (es) 2016-10-21
FI20135936A (fi) 2015-03-19
US20160223187A1 (en) 2016-08-04
BR112016008591A2 (pt) 2018-05-02
CN105579778A (zh) 2016-05-11
PL3047212T3 (pl) 2018-03-30
RS56805B1 (sr) 2018-04-30
EP3047212B1 (en) 2017-11-08
KR101817024B1 (ko) 2018-01-09
BR112016008591B1 (pt) 2021-12-14
ES2656695T3 (es) 2018-02-28
EA201690350A1 (ru) 2016-09-30
WO2015040272A1 (en) 2015-03-26
KR20160045887A (ko) 2016-04-27
EA030054B1 (ru) 2018-06-29

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