WO2000022174A1 - The method of substitute fuels feed to the blast furnace - Google Patents
The method of substitute fuels feed to the blast furnace Download PDFInfo
- Publication number
- WO2000022174A1 WO2000022174A1 PCT/CZ1999/000035 CZ9900035W WO0022174A1 WO 2000022174 A1 WO2000022174 A1 WO 2000022174A1 CZ 9900035 W CZ9900035 W CZ 9900035W WO 0022174 A1 WO0022174 A1 WO 0022174A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suspension
- blast
- fact
- oil
- blast furnace
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 235000010773 Cajanus indicus Nutrition 0.000 claims description 8
- 244000105627 Cajanus indicus Species 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000571 coke Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000010742 number 1 fuel oil Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 235000013980 iron oxide Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 3
- 239000012053 oil suspension Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000001033 granulometry Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
- C21B5/004—Injection of slurries
Definitions
- the invention relates to the method of substitute fuels feed to the blast furnace bv their iniection to the hot blast blown to the hearth within the production of hot metal .
- the next possibilitv is iniection of various waste materials to the blast furnace hearth. It has also significant environmental effect.
- the temperature in the oxidation area of the blast furnace reaches 2 200 ⁇ C. This is sufficient to dissolve entirely all harmful materials. Their individual components float to the blast f rnace gas . which can be used within the energetic networks .
- the advantage of this method consists in the possibility of its utilization bv the blast furnaces eguipped bv the appliance for liguid fuel iniection, where installation of pulverized coal iniection appliance reguires high capital expenditures as well as technically and technologically demanding adiustment.
- the next advantage is the fact that the materials containing carbon and hvdrogen in the coal-oil suspension or in the oily scales substitute part of blast furnace coke with all positive effects. Moreover, replacement of oil like additional fuel with coal will reduce the gas volume in the blast furnace bottom. Iniection of materials based on iron oxide enables reduction of the sinter production or reduction of pellets amount.
- the invention principle furthermore consists in the fact that the iniected suspension is fed to the blast furnace in the amount of 5 to 75 kg per 1 ton of hot metal .
- the invention principle furthmore consists in the fact that the suspension alternatively contains 5 to 80 % wt. of coal with granulometry 0 to 3 mm, the rest is oil.
- the invention principle ferthmore consists in the fact that the suspension alternatively contains 5 to 60 % wt. of scales with granularitv 0.001 to 3 mm. the rest is oil .
- the invention principle furthermore consists in the fact that the suspension alternatively contains 5 to 60 % wt. scales, 5 to 80 % wt. coal, the rest is oil.
- the invention principle furthermore consists in the fact that before the distribution to individual tuveres the suspension is heated up to the temperature of 80 to 120 ⁇ C in order to provide its sufficient viscositv and thus improved oumpabilitv of conveved blend.
- the invention principle furthermore consists in the fact that the suspension is iniected to individual tuveres under the pressure bv min. 0.1 MPa higher than the pressure of the blast.
- the technologv of substitute fuels SUPPIV to the blast furnace according to the invention enables among others utilization of wide assortment of coal regarding its composition as well as the characteristics.
- the granulometry of coal iniected to the suspension ranges from 0 to 3 mm. This enables utilization of common proceedings of coal adaptation at the coke plant.
- the invention principle furthermore consists in the fact that the coal conveved bv means of oil to the blast furnace tuveres has the moisture ratio up to 1Q % wt. This directly decreases the costs for preparation of coal - oil suspension.
- the next advantage of this invention is the fact that it does not reguire inert atmosphere within adaptation and conveyance of to the blast furnace the coal as it is still within the classical technologv of the coal blowing to the blast furnace .
- the moisture of the scale part of the suspension amounts to max. 25 % wt.
- the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
- the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
- the financial effects consist in higher controlllabilitv of the hearth thermal state and thus the hot metal gualitv improvement, in the iron ore cost savings.
- in utilization of ferrous substances rom the scales .
- the coal is adapted to the granulometrv of 0 to 3 mm at common oowder room, then the coal - oil suspension is being prepared, conveved to the blast furnace, adiusted to the final parameters, heated to 80 to 120 ⁇ C and distributed to the individual tuveres . where it is iniected bv adiusted oil nozzles under the pressure min. 0.6 MPa, i. e. bv 0.3 MPa higher than the pressure of the blast.
- the coal - oil suspension contains 20 % wt. coal and 80 % wt. oil.
- the oilv scales are prepared with the purpose of their homogenization, the scales are added to the furnace oil, the scales - oil suspension is prepared and shifted from the impulse section to the compressive section, heated uo to 80 to 120 ⁇ C and distributed to the individual tuveres, where it is iniected under the pressure of 0.6 MPa. i. e- bv 0.3 MPa higher than the pressure of the blast.
- the scales - oil suspension contains 56 % wt. scales and 44 % wt. oil.
- This invention can be used within all works for the production of hot metal via blast furnaces with minimum of the capital expenditures.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ19983235A CZ288751B6 (cs) | 1998-10-08 | 1998-10-08 | Způsob přívodu náhradních paliv do vysoké pece |
| CZPV3235-98 | 1998-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000022174A1 true WO2000022174A1 (en) | 2000-04-20 |
Family
ID=5466375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CZ1999/000035 WO2000022174A1 (en) | 1998-10-08 | 1999-10-05 | The method of substitute fuels feed to the blast furnace |
Country Status (2)
| Country | Link |
|---|---|
| CZ (1) | CZ288751B6 (cs) |
| WO (1) | WO2000022174A1 (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106558A1 (de) * | 2003-05-26 | 2004-12-09 | Loesche Gmbh | Brennstoffsystem zur zuführung in blasformen bei der roheisenerzeugung im hochöfen und verfahren und anlage zur herstellung und zuführung des brennstoffmischung |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1363604A (fr) * | 1962-07-18 | 1964-06-12 | Centre Nat Rech Metall | Procédé et dispositif pour l'injection de combustibles dans un four à cuve |
| FR1401807A (fr) * | 1963-07-17 | 1965-06-04 | Combustion Eng | Procédé et installation pour fournir une suspension de combustible pulvérisé à des dispositifs de chauffage |
| US3207558A (en) * | 1962-03-17 | 1965-09-21 | Yawata Seitetsu Kabushiki Kais | Method and device for transmitting mixed solid-liquid fuel into the blast furnace |
| DE1433357A1 (de) * | 1964-12-09 | 1968-12-19 | Alfred Rexroth | Verfahren zum Teilersetzen des Gattierkokses in Metallreduzieroefen durch in die Duesenzone eingepresstes Kohlen- oder Kokspulver |
| JPS5364602A (en) * | 1976-11-22 | 1978-06-09 | Sumitomo Metal Ind Ltd | Feeding method for powdery solid fuel into blast furnace |
| JPS5792107A (en) * | 1980-11-29 | 1982-06-08 | Nisshin Steel Co Ltd | Method and device for feeding pulverized coal forcibly into blast furnace tuyere part |
| WO1993020244A1 (en) * | 1992-03-27 | 1993-10-14 | British Steel Plc | Fines injection |
-
1998
- 1998-10-08 CZ CZ19983235A patent/CZ288751B6/cs not_active IP Right Cessation
-
1999
- 1999-10-05 WO PCT/CZ1999/000035 patent/WO2000022174A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3207558A (en) * | 1962-03-17 | 1965-09-21 | Yawata Seitetsu Kabushiki Kais | Method and device for transmitting mixed solid-liquid fuel into the blast furnace |
| FR1363604A (fr) * | 1962-07-18 | 1964-06-12 | Centre Nat Rech Metall | Procédé et dispositif pour l'injection de combustibles dans un four à cuve |
| FR1401807A (fr) * | 1963-07-17 | 1965-06-04 | Combustion Eng | Procédé et installation pour fournir une suspension de combustible pulvérisé à des dispositifs de chauffage |
| DE1433357A1 (de) * | 1964-12-09 | 1968-12-19 | Alfred Rexroth | Verfahren zum Teilersetzen des Gattierkokses in Metallreduzieroefen durch in die Duesenzone eingepresstes Kohlen- oder Kokspulver |
| JPS5364602A (en) * | 1976-11-22 | 1978-06-09 | Sumitomo Metal Ind Ltd | Feeding method for powdery solid fuel into blast furnace |
| JPS5792107A (en) * | 1980-11-29 | 1982-06-08 | Nisshin Steel Co Ltd | Method and device for feeding pulverized coal forcibly into blast furnace tuyere part |
| WO1993020244A1 (en) * | 1992-03-27 | 1993-10-14 | British Steel Plc | Fines injection |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 002, no. 100 (C - 020) 18 August 1978 (1978-08-18) * |
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 177 (C - 124) 11 September 1982 (1982-09-11) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106558A1 (de) * | 2003-05-26 | 2004-12-09 | Loesche Gmbh | Brennstoffsystem zur zuführung in blasformen bei der roheisenerzeugung im hochöfen und verfahren und anlage zur herstellung und zuführung des brennstoffmischung |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ288751B6 (cs) | 2001-08-15 |
| CZ323598A3 (cs) | 2000-06-14 |
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